present status of protection audit deficiencies (a & b...

1 2 3 4 5 6 7 8 9 10 11

Yes/ No

Whether attended Yes/No

If not attended,

reason

Yes/ No


If no, expected date to attend

1) Zone 1 seeting of 400kV & 220kV lnes are set to 90% instead of 80% which needs to be revised to 80%.

Yes Yes … … … … ……

Directional E/F setting to be adopted in Bhusawal & Nandgaon Peth Bay.

… … … Yes No …

STUB Protection to be enabled in Nandgaon Peth & Bhusawal Relay.

… … … Yes No …

Zone-4 setting was 1000 ms. Yes Yes … … … … Zone-4 setting adopted 400 ms according ESG group.

Harmonic restrain feature not adopted in both H.V. & L.V. Back-Up Relay

… … … Yes No … Services of Siemens Engineer required. Requirement sent to The Exe.Engg 400KV RS Division, Akola.

Only internal OPEN delta used in NDVR Relay for tripping. External Open delta for alarm is not available.

Yes Yes … … … …

Importang digital signals are not included in DR of Nandgaon peth, Bhusawal & ICT bay.

… … … Yes No … Required changes in setting file of relay is carried out offline. However for configuration outage , services of siemens engineer is required.Requirement already sent to The Exe.Engg 400KV RS Division, Akola.

Wide variation in LBB current detector setting.

… … … … … … Matter is taken up with M/S PGCIL.

400 KV

Required changes in setting file of relay is carried out offline. However for configuration

Name of Zone: AmravatiPresent Status of Protection Audit Deficiencies (A & B type) in MSETCL for the year 2014-15 as on 31/01/2016

Sr. No.

Name of S/s identified for

Protection Audit

S/s voltage

(kV)Observations of protection Audit

Deficiencies that can be corrected without

procurement (Category-A)

Deficiencies involving procurement (Category-B)

Present Status as on 31/01/2016

Akola1

1 2 3 4 5 6 7 8 9 10 11

Yes/ No


If not attended,

reason

Yes/ No




Sr. No.


Protection Audit

S/s voltage






2 Paras 220 KV The s/stn is audited in previous 2 years and the descripancies are attended and complied. No descripancy observed during the PA - 2014-15

… … … … … … The s/stn is audited in previous 2 years and the descripancies are attended and complied. No descripancy observed during the PA - 2014-15

3 Akola 220 KV The setting of LBB relays was 0.2 Amp for EHV Lines

Yes Yes … … … … The setting revised and kept 0.8 amp as per ESG recommendation.

1. Carrier protection & AR scheme for 220 KV feeders not commissioned

No -- -- Yes Yes -- SEL 321 relays replaced under retrofitting scheme and AR Scheme commd.

2. Load trimming scheme for ICTs is needed.

Yes Yes -- No -- -- Load trimming scheme commissioned.

1. Zone 3 setting of all 220 KV & 132 KV lines was 100% of protected + 100% of longest line at remote s/stn

Yes Yes … … … … Settings corrected as per ESG recommendation as : 120% (Protected line + Longest line at Remote S/stn)

2. Zone -2 time setting of 220 kV Ambazari & 132 kV Ambazari lines needs to be revised as these lines are followed by short line at remote S/stn.

Yes Yes … … … … Existing 350 msec setting sevised to 450 msec.

1. Zone 3 setting of all 220 KV was 100% of protected + 100% of longest line at remote s/stn

Yes Yes … … … … Settings corrected as per ESG recommendation as : 120% (Protected line + Longest line at Remote S/stn)

2. LBB setting of T/F 1&2 was 80% of CTR connected instead of 80% of T/F operating current

Yes Yes … … … … The settings corrected.

7 Malkapur 132KV … … … … … … …

Badnera 220 KV6

220 KVChikhali4

220 KVAmravati5

1 2 3 4 5 6 7 8 9 10 11

Yes/ No


If not attended,

reason

Yes/ No




Sr. No.


Protection Audit

S/s voltage






8 Dhamangaon 220 KV 1. Zone 3 setting of all 220 KV was 100% of protected + 100% of longest line at remote s/stn

Yes Yes … … … … Settings corrected as per ESG recommendation as : 120% (100% Protected line + 100% Longest line at Remote S/stn)

1 2 3 4 5 6 7 8 9 10 11

Yes/No


If not attended,re

ason

Yes/No


If no,expected date to attend

1. Zone-4 (reverse zone)timing setting of Disatce relay is 900 mSec

Yes Yes -- -- -- completed Zone -4 (reverse Zone) time setting revised to 350 msec

2.DG set not available -- -- -- Yes No On receipt of material

3.Only one DC source available -- -- -- Yes No On receipt of material

1.Zone-4 (reverse)timing setting of Disatance relay is 900 mSec.

Yes Yes -- -- completed Zone -4 (reverse Zone) time setting revised to 350 msec as per Protection audit guidelines.

2.DG set not available -- -- -- Yes No On receipt of material

3.Only one DC source available -- -- -- Yes No On receipt of material

4. 220KV & 132KV Bus section isolation circuit Breaker not available. The said breaker are proposed in the 220 kV & 132 kV Main Buses.

-- -- -- Yes No On Availability of Breaker

1.For 400kV Solapur line zone 4 & broken conductor detection functions are OFF in M-1 & M-2. A/R function is OFF in M-2

NO NO Yes NA Work in Progress

ABB representative is awaited. communication software is not available

For 220kV Murud line zone 3 setting is more than calculated setting Yes Yes NA NA NA completed The same is rectified and

adopted as per calculation

For PGCIL ckt- 1 & 2 Zone 4 time setting is same as zone 3 time and Broken conductor function is OFF in main-2 relay of both lines.

Yes Yes NA NA NA NA

1)Zone 4 time changed from 1 sec to 1.1 sec 2) Broken conductor function is enabled in main-2 relay of both lines.

BRC feature disabled. YES YES NA NO NA completedSOTF feature is selected for all zones YES YES NA NO NA completedPSB blocking zones selected for all zones YES YES NA NO NA completed

Present Status of Protection Audit Deficiencies (A & B type) in MSETCL for the year 2014-15 as on 31/01/2016Name of Zone: Aurangabad

Sr. No.

Name Of S/s Identified for

protection Audit S/s voltage

(kV)

Observations of Protection Audit Deficiencies that can be corrected without

procurement(Category-A)

Deficiencies involving procurement(Category-B)

Present status as on 31/01/2016

1 220KV PADEGAON

220 KV

2 220KV JALNA 220 KV

3 400kV Girwali 400/ 220kV

4 220 KV OLD GCR Parli 220 KV

1 2 3 4 5 6 7 8 9 10 11

Yes/No


If not attended,re

ason

Yes/No




Sr. No.



(kV)





A/R feature is disabled NO NO YES NO on receipt of binary IO cards

single ph LBB initiation is not available

Timing of Zone II for 220 KV Harangul I & II & nanded is 350 mSec. YES YES NA NO NA completedSome contacts of PT selection relay are not operating. NO NO NA YES NO After receipt of

relays Requirement submitted Existing PT selection scheme is as per old PT. In old PT only 1 core is used for Protection As well as metering purpose.

NO NO NA YES NO After receipt of PT Requirement submitted

5 220 KV New TPS Parli 220 KV SOTF feature is selected for all zones YES YES NA NO NA completed

1. Protected Line Lengths. YES YES NA NO NA completed2. Brocken conductor function disabled. YES YES NA NO NA completed3. SOTF selected for all zones. YES YES NA NO NA completed4. PSB blocking zones selected as Z1,Z2,Z3,Z4. YES YES NA NO NA completed5. 132KV bus-bar protection fail alarm & block settings were different. YES YES NA NO NA completed8. DC supervision scheme is not available on any panel. NO NO NA YES NO On Panel

Replacement Requirement submitted9. Separate DC circuits for Main prot., B/U prot., isolator circuits, trip ckt-1 & 2, annunciation & indication ckts, etc are not available in any panel.

NO NO NA YES NO On Panel Replacement Requirement submitted

11. The present annunciators on 132KV Renapur, 132KV Latur Line and 132/33KV TF-4 panels are faulty.

NO NO NA YES NO Work in Progress Requirement submitted

2) 132KV Jangamwadi-II Bay: Announciator faulty.

NO NA NA YES NO Work in Progress Requirement

14) 220KV PT:- i) Single core has been utilized for protection & metering as per old scheme ii) Open delta voltage derived from auxiliary PT

YES NA

After cable laying & on availability of outage

during retroffiting

NO NA NA Outage awaited

7 220KV Waghala 220KV

4 220 KV OLD GCR Parli 220 KV

6 220 KV GIRWALI 220/132/33 KV

1 2 3 4 5 6 7 8 9 10 11

Yes/No


If not attended,re

ason

Yes/No




Sr. No.



(kV)





16) 132KV Umri-1, 132KV Umri-II, 132KV Narsi, 132/11KV 25MVA Emco TF, 132/11KV 25MVA BB TF, 50MVA 132/33KV Vijay TF, 50MVA 132/33KV BBL TF: 132/33KVTrip circuit Supervision Relay

NO NA NA YES NO On Relay Receipt Requirement submitted

17) 132KV Umri-1, 132KV Umri-II, 132KV Narsi, 132/11KV 25MVA Emco TF, 132/11KV 25MVA BB TF, 50MVA 132/33KV Vijay TF, 50MVA 132/33KV BBL, 132KV Jangamwadi-1, 200MVA 220/132KV BBL ICT-1, 200MVA 220/132KV BBL ICT-II, 220KV TBC TF:- C.B Supervision relays

NO NA NA YES NO On Relay Receipt Requirement submitted

20) cable from TF LV bay CT M.B to Panel for metering is of 4 core Aluminium cable. Hence eeds to be replaced by 4 core Copper cables.

NO NA NA Yes NO work in Progress Requirement submitted

7 220KV Waghala 220KV

1 2 3 4 5 6 7 8 9 10 11

Yes/No


If not attended,re

ason

Yes/No




Sr. No.



(kV)





7. NT switches for 132KV Jintoor & Parbhani bays are not working NO NA NA YES NO Attended completed8. Cables utilized in CT circuitery for 132 & 220KV from CT M.B to Panels are Aluminium type. Needs to b replaced by copper

NO NA NA YES NO work in Progress Requirement submitted

9. Bus sectionaliers for 132 & 220KV not available. NO NA NA YES NO work in

Progress Requirement submitted 10. 05 nos of Battery cells detected -Ve. Replacement required NO NA NA YES NO After

Procurement. Requirement submitted 13. 07 nos of D.C supervision relays found faulty NO NA NA YES NO After

Procurement.Requirement is to be submitted

220 KV Parbhani 220KV 8

Yes/ No


If not attended,

reason

Yes/ No



DGA testing of ICT YES Yes - - - DGA tender is in process by O & M circle office

GPS synchonisation of Relays YES No

Issue to be taken

with manufactu

rer

- - -

Zone 1 seeting of 400kV & 220kV lnes are set to 90% instead of 80% which needs to be revised to 80%.

400KV Karad-Lonikand Line Autorecloser not in service. YES Yes - - - Work is done. AR taken in

Service in July -15Nitrojen injectoin system for ICT -I is on Manual mode due to only one relay panel (CTR Make)

- - - Yes No

within 10 days after receipt of relays, subject

to outage

Requirement of 400/220KV , 315MVA ICT-I relay panel already submitted to C.O Mumbai

GPS synchonisation of Relays - - - YES No - GPS synchonisation is done for Main-I & Main-II

DG set shall be made available for emergencies - - - YES No - Requirment is submitted

to C.O.3 220 kV Vita 220 - - - - - -

OTI meter found faulty for EMCO make, 220/132 kV, 100 MVA T/F - - - Yes No Needs ProcurementR Phase element of TMD unit is faulty for 220 kV Busbar Protection relay - - - Yes No

5 220 kV Peth 220 Nil - - - - - - -

6 220 kV Ogalewadi 220 Nil - - - - - - -Distance relay of 110 kV Vishrambag 1 line is found removed due to its faulty power card

- - - Yes No -Relay is repaired & retrofitted on 02.02.2015

New 110 kV Busbar protection scheme is required in view of replacement of old faulty scheme.

- - - Yes No - Order is placed by C.O.

WTI & OTI of 220/33 KV T/F No.1 & 2 are faulty. - - - Yes No - Needs Procurement


1

2

4

7

8

220 kV Miraj 220

Present Status of Protection Audit Deficiencies (A & B type) in MSETCL for the year 2014-15 as on 31/01/2016Name of Zone : Karad

Sr. No.


Protection Audit

S/s voltage





220 kV Malharpeth 220

400kV Karad 400 kV

400 KV New Koyna 400 KV

220 kV Satara MIDC 220

Yes/ No


If not attended,

reason

Yes/ No





Sr. No.


Protection Audit

S/s voltage





Relays for generation feeders should be of Directional feature i.e. for 33 KV vankusavde 1,2,3,4, 33 KV RS India 1,2 feeders for avoiding unwanted trippings along with outgoing feeders at Malharpeth S/stn

- - - Yes No -

R and Y phase 220 KV PTs are of 2 cores (mixed metering and protection core) . It should be of 3 cores for correct protection operation and proper energy accounting.

- - - Yes No -

33 KV PT not available for 220/33 KV, T/F No.2; and it is required for proper energy accounting and UFR & Feeders (directional relay ) tripping.

- - - Yes No -

UFR should be having PT selection for 33 KV PT 1&2 - - - Yes No -

9 220 kV Lonand 220

22 kV Bus PT is having Single Cores which should have of 3 cores so as to separate out protection and metering classes for corrosponding applications.

- - - - - - -

10 220 kV Jath 220 Nil - - - - - - -

11 132 kV Satara Road 132 Nil - - - - - - -

8 220 kV Malharpeth 220

Yes/ No


If not attended,

reason

Yes/ No





Sr. No.


Protection Audit

S/s voltage





MOG of 110/11 KV,EMCO T/F not working - - Yes No - Needs ProcurementNo trip relays are available to O/C-E/F relays' of following feeders- 33KV Shirgaon LIS,33 KV Shahu LIS, 11 KV Kay pulp

- - Yes No -

O/C-E/F relays of generation feeders should be having directional feature i.e. for 33 KV Vankusavade 1,33 KV Vankusavade 2 feeders

- - Yes No -

UFR should be having PT selection for 33 KV PTs and 11 KV PT - - Yes No -

13 110 kV Ashta 110 Nil - - - - - - -

14 Mudshingi 220 KV

110 kV PT is having 2-cores which should have of 3-cores so as to separate out Protection and metering classes for corresponding applications

- - - Yes No needs Procurement

15 110 kV Gokul Shirgaon 110 KV Nil

Directional Relay should be provided for Transformer-I & Transformer-II. Yes No

NR Scope make Panels are received & replacement work is in process

REF relays for 50 MVA Transformer-I & II should be replaced. Existing relays are not suitable for REF Protection.

Yes No

220 kV PT should be of 3 Cores. Presently there is of 2 Cores PT. Yes No needs Procurement

17 kale 110 KV nil18 Halakarni 220 KV nil

19 Pawas 220 KV Busbar protection relay required Yes No Order given to M/S NR for busbar relay

1) For 110 /33 KV Voltamp make TF Fan no-3 not working. Yes

Not working fan was replaced on dated 24.01.2015

2) Fan switch for 110/33 KV Voltamp make Tf needs to be in auto mode.

Fan switch kept on auto mode

12

16

20 Kotholi 110KV Yes

220 kV Mumewadi 220/33 KV

110 kV Atit 110

Yes/ No


If not attended,

reason

Yes/ No





Sr. No.


Protection Audit

S/s voltage





3) B/U relay time setting of 110 KV Radhanagari fedder needs to be modified if required.

Settings are revised as per fault level

21 Bapat Camp 110 KV nil

22 Wathar 220 KV220 KV Bus bar protection is out of service since 16 Mar 2014 due to relay's display problem.

Yes No After repaired, tested and taken into service

23 Kanakavali 132 KV nil

24 Kharepatan 220 KV Busbar relay found faulty Yes NoAwaited for M/S ABB representative for repair the same

25 Lote 220 KV nil

20 Kotholi 110KV Yes

Yes/ No


If not attended,

reason

Yes/ No




Yes Yes Attended

2)Earth leakage to be attended Yes Yes Attended3) For 400KV Bhusawal & Koradi-II ckt, REL 521 ABB make distance schemes (Main-I & Main-II) are provided. In REL 521 (ABB make) distance scheme, Zone-4 i.e. Back-up to bus bar feature is not available.

Yes No Pending

2400KV

Khaperkheda S/Stn

400KV 1)220V Set :- Cell no. 5 specific gravity to be confirmed Yes Yes Specific Gravity of Cell no.

5 is 1220

3 400KV Koradi-II S/Stn 400KV 1) Earth leakage to be attended Yes No

Not attended by Project

agency

Pending

1)Earth leakage to be attended Yes Yes Attended 2)Battery 220V Set 1 Cell no.36 is in poor condition & need to be replaced. Yes Yes Attended

5400KV

Chandrapur-II S/Stn

400KV 1)Charger Earth leakage problem in boost mode to be attended Yes No

To attend the problem some costly spares are required and as it is still under guarentee period hence matter is taken

upwith M/s.BHEL1)DC mixing problems to be attended Yes Yes Attended2)Earth leakage (2-3 mA) to be attended Yes Yes Attended

3)MB Cable pulling problem to be attended Yes No Matter taken up with M/s L&T dt.26.08.2015



4 400KV GCR Chandrapur S/Stn 400KV

Present Status of Protection Audit Deficiencies (A & B type) in MSETCL for the year 2014-15 as on 31/01/2016Name of Zone : Nagpur

Sr. No.


Protection Audit

S/s voltage




6 400 KV Warora S/Stn 400KV

1 400KV Koradi S/Stn 400KV

Yes/ No


If not attended,

reason

Yes/ No






Sr. No.


Protection Audit

S/s voltage




1)Earth leakage to be attended Yes YesEarth leakage attended and presently earth leakage is NIL

2)132/11KV, 25MVA T/F: Oil leakage from drain valve to be attended. Yes Yes Attended

3)Vermin proofing needs to be improved. Yes Yes Attended4) Metal spreading is inadequate. Yes Yes Attended5)Grass cutting is required. Yes Yes Attended

6)220KV & 132KV Isolator structure problem Yes No

Pertaining to civil Dn correspondace done with civil Dn.

7)ICT-3 (Bharat Bijlee):- Online H2 & H2O measurement (model calisto make MORGON SCHFFER Canada) not working

Yes No Offer not received from agency

8)220V 500AH Exide battery set having Efficiency 60% Needs to be replaced/ reconditioned

Yes No Requirement submitted

9)48V 200AH exide battery set efficiency 70% Needs to be replaced/ reconditioned Yes Yes Replaced can 12.03.201510)25 MVA, 132KV/11KV T/F-I Bph Ir is 227 micro Amp. It=1219.7 micro amp. IR values of LA stack needs to be confirmed. Yes Yes

Ir-37 It-618 on dt. 13.01.2016

11)Hingna-I 132KV Bph Ir = 239 microA It = 410 microAIR values of LA stack needs to be confirmed.

Yes Yes Ir-35 It-585 on dt. 13.01.2016

12)220KV Koradi-II 220KV Rph Ir = 277 microA It = 252 microAIR values of LA stack needs to be confirmed.

Yes Yes Ir-25 It-570 on dt. 13.01.2016

220KV220KV Ambazari S/Stn 7

7 220KV Ambazari S/Stn 220KV

7 220KV Ambazari S/Stn 220KV

Yes/ No


If not attended,

reason

Yes/ No






Sr. No.


Protection Audit

S/s voltage




13)Koradi-I 220KV Rph Ir = 175 microA It = 271 microAIR values of LA stack needs to be confirmed.

Yes Yes Ir-33 It-589 on dt. 13.01.2016

14) 200MVA, 220/132KV-ICT-III 132KV Yph Ir = 232 microA It = 1228 microAIR values of LA stack needs to be confirmed.

Yes Yes Ir-31 It-760 on dt. 13.01.2016

15) 200MVA, 220/132KV-ICT-II220KV Bph Ir = 238 microA It = 771 microAIR values of LA stack needs to be confirmed.

Yes Yes Ir-81 It-430 on dt. 13.01.2016

16)200MVA, 220/132KV-ICT-III132KV Bph Ir = 297 microA It = 1986 microAIR values of LA stack needs to be confirmed.

Yes Yes Ir-71 It-600 on dt. 13.01.2016

17)200MVA, 220/132KV-ICT-II132KV Yph Ir = 222 microA It = 1765 microAIR values of LA stack needs to be confirmed.

Yes Yes Ir-41 It-561 on dt. 13.01.2016

18) 150MVA, 220/132KV ICT-I132KV Y-PHIr = 247 microA It = 3642 microAIR values of LA stack needs to be confirmed.

Yes Yes Ir-32 It-760 on dt. 13.01.2016

220KV Ambazari S/Stn 220KV

220KV220KV Ambazari S/Stn 7

7

Yes/ No


If not attended,

reason

Yes/ No






Sr. No.


Protection Audit

S/s voltage




19) 25MVA, 132/11KV T/F-I132KV Y-PHIr = 208 microA It = 1144 microAIR values of LA stack needs to be confirmed.

Yes Yes Ir-24 It-571 on dt. 13.01.2016

20)25MVA, 132/11KV T/F-I132KV B-PHIr = 267 microA It = 759 microAIR values of LA stack needs to be confirmed.

Yes Yes Ir-37 It-618 on dt. 13.01.2016

21) 132KV Amrawati132KV Y-PHIr = 201 microA It = 2153 microAIR values of LA stack needs to be confirmed.

Yes Yes Ir-31 It-536 on dt. 13.01.2016

22) 132KV Hingna-I132KV B-PHIr = 374 microA It = 589 microALA needs to be replaced.

Yes Yes Ir-35 It-585 on dt. 13.01.2016

23)CTs having higher Tan delta values needs to be replaced Yes Yes PD carried out and CTs

found ok24) In 7SA511 Zone-4 is not in operation Yes No Pending

220KV Ambazari S/Stn 220KV7

Yes/ No


If not attended,

reason

Yes/ No






Sr. No.


Protection Audit

S/s voltage




1)220KV K' Wada-II ckt: 3nos IVT's to be replaced by CVT's Yes No Requirement submitted 2)48V battery bank: 15th number cell is bypassed needs restoration Yes Yes Cell Commissioned3) K'Wada-I -2 nos,Suryalaxmi-1 no, Butibori-III - 1 No4 Nos oil leaked CVT's to be attended

Yes Yes Attended

4)Cable trench broken slippers to be replaced. Yes No Pertaining to civil Dn Dn.

correspondace done5) Earth leakage to be attended. Yes Yes Attended6) Grass cutting & metal spreading in yard is required. Yes Yes Attended

7)Vermin proofing needs to be improved. Yes Yes Attended 1)Bus coupler: Y-Ph & R-ph CT oil leakage to be attended. Yes Yes Attended 2)100MVA, 220/132KV ICT, T/F-3 & T/F-1:- Oil leakage to be attended. Yes Yes Attended

3)Grass cutting in yard is required. Yes Yes Attended

4) Vermin proofing needs to be improved. Yes Yes Attended5) 50MVA 220/33KV T/F-I EMCO 220KV R-PH Ir = 153 microA It = 823 microAIR values of LA stack needs to be confirmed.

Yes Yes Ir-29 It-715 on dt. 28.01.2016

6)50MVA 220/33KV T/F-I EMCO 220KV B-PH Ir = 223 microA It = 813 microAIR values of LA stack needs to be confirmed.

Yes Yes Ir-77 It-655 on dt. 28.01.2016

7)132KV Khapri-II 132KV B-PH Ir = 184 microA It =408 microA IR values of LA stack needs to be confirmed.

Yes Yes Ir-32 It-486 on dt. 28.01.2016

1)Earth leakage to be attended. Yes Yes Attended2) 48V Battery set: Battery Bank efficiency :- 50% Needs replacement/ recondition

Yes YesReplaced on Feb 15 (27.02.2015 ) Battery 100%

8220KV

Khaperkheda S/Stn

220KV

9 220 KV Butibori S/Stn 220KV

10 220KV Kalmeshwar S/Stn 220KV

Yes/ No


If not attended,

reason

Yes/ No






Sr. No.


Protection Audit

S/s voltage




3) Hingna –II feeder ABT meter problem needs to attend Yes Yes Meter replaced4) 132/11KV, 25 MVA T/F-I132/11KV, 16 MVA T/F-II132/11KV, 50 MVA T/F-IICooling fans not working in auto mode.

Yes Yes Attended

5)For 220KV Amabazari & 220KV Pandhurna feeder, PLCC coupling is Ph-E. Needs to be converted to Ph-Ph to reduce the chances of A/R failure during Ph-E fault.

Yes No CCs recivied WTs required.

6)Vermin proofing needs to be improved. Yes Yes Attended

7)Metal spreading is inadequate. Yes No Pertaining to civil Dn Dn. correspondace done

8) 220KV Ispat, R-Ph -118, Y-Ph – 199, B-ph -143 Repeat the CRM Yes Yes

Values within permissiblr limit R-ph - 38 Y ph - 22 B ph - 28

1)220V Battery bank :75 no. Cell is bypassed Yes Yes Attended2)220V Battery bank:- Efficiency 65%. Battery bank needs to be replaced. Yes Yes Attended3)220V Battery bank:- Cell no. 7,9,20,21,66,95,96 specific gravity to be confirmed.

Yes Yes Attended

4) Oil leakage in Y ph bus PT-I needs to be attended Yes Yes Attended 5)Oil leakage in 200 MVAICT R& Y ph HV & neutral bushing to be attended. Yes No Pending

6) Vermin proofing needs to be improved Yes Yes Attended7)Diagnostic testing progress needs to be accelerated. Yes Yes Attended

8)Earth resistance value to be confirmed. Yes No Pending9) After transferring Kanhan-I feeder on TBC, it is observed that, distance protection not transferring on TBC. Same to be confirmed/ rectified with Testing Engineers

Yes Yes Attended

11 220KV Bhandara S/Stn 220KV

10 220KV Kalmeshwar S/Stn 220KV

220KV220KV Bhandara S/Stn11

Yes/ No


If not attended,

reason

Yes/ No






Sr. No.


Protection Audit

S/s voltage




10)Following feeders are not closing remotely1) 132KV madgi-I & II2) 16MVA T/F HV side 3) 132KV Ambhora-I4) 132KV Kardha5) 100MVA ICT HV/LV

Yes No Pending

11) 132KV Ambhora-II & 132KV Kanhan feeder CB spring charging problem Yes Yes Attended1)220V Battery bank: Cell no. 26 specific gravity to be confirmed Yes Yes Sp. Gravity is ok2) 220V Battery bank :72 no. Cell is bypassed Yes No Requirement is forwarded3) 220V Battery Bank efficiency :- 60% 48V Battery Bank efficiency :- 70% Needs replacement/ recondition

Yes No Requirement is forwarded

4) Earth resistance value to be confirmed. Yes YesEarth Resistance values confirmed and satisfactory

5) CTR is bypassed for 200MVA ICT Yes Yes CTR taken in Service 6)33KV Tiroda breaker remote closing problem Yes Yes Problem resolved

7) Oil leakage of following equipments to be attended 1)200MVA ICT-I & 100MVA ICT-I2)220/33KV 25MVA TF-1 & 2

Yes

Yes (Except

220/33KV 25MVA TF-1 & 2)

Requirement is forwarded

8)132KV Kachewani-I132KV Y-PHIr = 160 µA It = 1394 µAIR values of LA stack needs to be confirmed

Yes Yes Trend is under Monitoring

12 220KV Kaulewada S/Stn 220KV

12

220KV220KV Bhandara S/Stn11

220KV Kaulewada S/Stn 220KV

Yes/ No


If not attended,

reason

Yes/ No






Sr. No.


Protection Audit

S/s voltage




9) CC’s are bypassed for following feeders:-1) 132KV Madgi-1 B Ph2) 132KV Gondia-13) 132KV Gondia-2 B Ph4) 220KV Khaperkheda-2

Yes No Requirement is forwarded

1)220V DC Earth leakage problem to be attended Yes No

Will be attended

soon

The work is to be carried out by testing/by external agency

2) Earth leakage ammeter on charger to be provided Yes No At an earliest Pending

3)110V DC earth leakage problem to be attended Yes No

Will be attended

soonPending

4) 110V Charger Annunciator is not in working condition Yes No At an earliest Pending 5)Cracks found in REC structure of isolator Yes No At an earliest Pending 6)Oil leakage of following equipments to be attended 1)66/11KV 10MVA TF2)220/66KV 50MVA TF-2 3)66/11KV 10MVA TF 3

Yes 1) No 2) Yes 3) No

1) Work till not attended 2)

Work attended by agency 3) Work till not

attended

Pending

7)Vermin proofing needs to be improved YesYES

(Partially completed)

Requirement submitted

8)Diagnostic testing progress needs to be accelerated. Yes Yes Attended

9) Earth resistance value to be confirmed. Yes Yes Attended 10)Metal spreading required Yes No Requirement submitted 11)HEL make CB of TF is not remotely closing. Yes No Requirement submitted

1)Last C/D cycle carried out in Yr. 2012 Yes No Pending

13 220KV220KV Wardha S/Stn

13 220KV Wardha S/Stn 220KV

14 220KV Hinganghat S/Stn 220KV

12 220KV Kaulewada S/Stn 220KV

Yes/ No


If not attended,

reason

Yes/ No






Sr. No.


Protection Audit

S/s voltage




2)Oil leakage of following equipment to be attended 1)25MVA, 132/33KV TF-1 & 22) 80MVA 220/132KV ICT3)33KV Bus PT

Yes Yes Attended

3)Earth resistance value to be confirmed. Yes Yes Attended 4)Vermin proofing needs to be improved Yes Yes Attended5) Metal spreading required Yes Yes Attended6)Grass cutting is required. Yes Yes Attended7)CRM not carried out in 2014-15 Yes Yes Attended8)DGA not carried out in 2014-15 Yes Yes Attended9)ABT meter not present for following equipments / feeder:1)220/132KV 100MVA ICT-2 HV/LV2)132/33KV 25MVA TF-1 LV3)80MVA 220/132KV ICT-I LV

Yes No ABT meters are not available Pending

10)220/132KV 80MVA ICT-1 (HV breaker)TC1:- RPh- 108, Y Ph:- 111, B Ph:- 109TC2:- RPh- 108, Y Ph:- 110, B Ph:- 108

Yes Yes Attended

1)220V Battery bank:- Cell no. 4,43,45,48,68 cell voltage to be confirmed

Yes Yes Battery cell replaced on dtd 11.01.2016

2)Grass cutting is required. Yes Yes Attended 3)Lloyd CB PDR relay problem needs to be attended. Yes Yes problem attended on dtd.

10.12.2015

14 220KV Hinganghat S/Stn 220KV

15 220KV Bhugaon S/tn 220KV

Yes/ No


If not attended,

reason

Yes/ No






Sr. No.


Protection Audit

S/s voltage




4)Oil leakage of following equipment to be attended 1)Lloyd feeder Y ph Metering PT2)TBC Y ph CT3)220/33KV 25MVA TF 1 & 24) 220/132KV 100MVA ICT5) 220/132KV 100MVA ICT LV Y Ph CT 6)132KV Deoli R,Y,B ph CT7)132KV Seloo R ph CT8)33KV Sewagram Y ph CT9) 33KV Bus Y ph PT

Yes

Yes (except 132KV

Deoli Y ph CT &

33KV Bus Y ph PT

minor leakage from

connection box.hence\

need replacement

Requirement submitted

5)Vermin proofing needs to be improved Yes Yes Attended6) Diagnostic testing progress needs to be accelerated. Yes Yes Attended

7)Earth resistance value to be confirmed. Yes Yes Attended 8)Metal spreading required Yes No Requirement submitted 9)220/132KV 100MVA ICTAERC3 :- 3 nos. Multiplier relay faulty needs to be replaced. Yes No Requirement submitted

15 220KV Bhugaon S/tn 220KV

Yes/ No


If not attended,

reason

Yes/ No






Sr. No.


Protection Audit

S/s voltage




1)220V Set :- Cell no.1,3,5,14,16,35,36,60,61,74, 104 specific gravity to be confirmed

Yes Yes Values are within limit

2)Last C/D Cycle carried out on 12.04.2012 Yes Yes CD cycle carried out on

dt. 14/04/2015. 3)48V Set :- Cell no.1, 16 specific gravity to be confirmed Yes Yes Values are within limit

4)Earth leakage ammeter on charger is faulty Yes No

Administrative approval proposal for batery charger repairs is submitted

5)Post Monsoon LCM not carried out. Yes Yes Carried out on dt.23/02/2015

6)Earth resistance value to be confirmed. Yes Yes Confirmed values are within limit

7)Grass cutting is required. Yes Yes Done by agency on dt.10.12.2015

8)Earth leakage to be attended. Yes Yes Attended but (-) ve leakage is present. 9)Oil leakage of following equipments to

be attended : 1)220/33 KV 25 MVA TF 1 & 2, 2)220/132 KV 50 MVA ICT 1, 3) 220/132 KV 100 MVA ICT 2, 4) R ph & B Ph CT of 220/132 KV 100 MVA ICT 2, 5) 220KV Virur Y Ph CT, 6) 220KV R Ph CT & 33KV R Ph CT of 220/33 KV 25 MVA TF 2

Yes Yes Oil leakage attended

10)TBC Breaker Compressor problem Yes Yes Problem attended

11)100MVA ICT-2Cooling fans not working in auto mode. Yes Yes

E-tender for repairs of T/F cooling fan is under process.

12)ABT Meter not present for 33KV Kotgal-MIDC & 33KV Vyahad feeder Yes No

Available meters are of 110 V DC so required voltage conversion card

16 220KV Gadchiroli S/Stn 220KV

Yes/ No


If not attended,

reason

Yes/ No






Sr. No.


Protection Audit

S/s voltage




1)220/66KV ICT (Make :- NGEF): Cooling control cabinet of this T/F is very old and due to percolation of leakage oil from ICT tank, most of the contactors are not working, also part of the above terminal connectors switches are damaged.Out of 14 nos of cooling fans, 11 nos are in working condition.

Yes NoE-tender for repairs of T/F cooling fan is under process.

2)220/66KV ICT (Make :- NGEF):Tap changer position :- Tap changer mechanism rod is sealed by Mseal for arresting oil leakage, hence tap cannot be changed. Current tap position is tap no 8 and normal tap position is at tap no 9.

Yes No

Total O/H of Tap changer unit is required as during

the inspection on dt.06.02.2016 it is

observed that the tap changer unit is completely

wet with leakage of oil from the top. Requires

replacement.

3) 220/66KV ICT (Make :- NGEF): There are 02 nos of oil pump in working condition but AC supply arrangement is not proper

Yes No

Oil pump Sr.No. 15875-DN255/4 is kept

disconneced from AC supply which needs to be investigated thorougly.

4) 220/66KV ICT (Make :- NGEF): Oil level gauge is not working presently. Yes No

As per inspection on dt.06.02.2016, the oil

level shows'0' reading is seems to be faulty,

requires replacement. 5)220/66KV ICT(Make:- EMCO)Cooling control fan:- Out of 24 nos of fans only 09 nos are in working condition. For remaining 15 fans either contactor or fans are to be checked.

Yes NoE-tender for repairs of T/F cooling fan is under process.

220KV Gadchandur S/Stn 220KV17

220KV220KV Gadchandur S/Stn 17

Yes/ No


If not attended,

reason

Yes/ No






Sr. No.


Protection Audit

S/s voltage




6)220/66KV ICT(Make:- EMCO): Oil level gauge:- Not working. Yes No

The oil gauge just showing faulty deviation of the pointer which is

incorrect. The gauge is to be replaced.

7)220/33KV, 25MVA T/F(Make:- EMCO)AC supply MCB's and its connectors are damaged, hence supply cannot be extend.

Yes No

Transformer is dismantled on dt. 15.01.2016 against augmentation scheme.

8) Detailed and latest earth results should be submitted along with the confirmation of ICT / Transformer neutral earthing connecting with S/stn earth grid

Yes Yes Earth results taken on dtd 13.06.2015

9)Vermin proofing needs to be improved. Yes Yes Only CP/RP cleaned by ULTB method

10) Earth leakage to be attended.+ve to E = 152.9 ; -ve to E = 83.6 Yes No

Earth leakage meter is required with concerned

device.

1) 220V Battery Bank efficiency :- 50% 48V Battery Bank efficiency :- <50% Needs replacement/ recondition(Date of C/D Cycle:- 04.04.2012)

Yes Yes

As per the CD cycle carried out on dated 08.02.2015 1) 220V Battery Bank efficiency :- 80% 2)48V Battery Bank efficiency :- 75% .

2)TSS-1 & TSS-2 remote closing problem Yes YesReplaced by new one on dated 04.11.15 & 07.11.15.

3) Grass cutting is required. Yes Yes Done by Agency on dt. 25.12.2015.

4)Oil leakage of following equipments to be attended 1)220/66KV, 50MVA PTR-1,2,3,42)33KV Shegaon feeder B Ph CT

Yes YES

Till minor oil leakages from PTR-1 & 2 33kV Shegoan CT has been replaced on 22.05.15.

5)Earth resistance value to be confirmed. Yes Yes Confirmed.Value in order.

6)220/66KV PTR-1, 2,3 &4Cooling fans not working in auto mode. Yes Yes

PTR-3 & 4 cooling fans are working in AUTO Mode.

18

220KV220KV Gadchandur S/Stn 17

18 220KV Warora S/Stn 220KV

220KV220KV Warora S/Stn

Yes/ No


If not attended,

reason

Yes/ No






Sr. No.


Protection Audit

S/s voltage




7)Post Monsoon LCM not carried out. Yes Yes Post Monsoon LCM taken 23.01.2016.

8) 220/66KV, 50MVA PTR-2 LV ABT meter problem Yes YES Replaced on dated

05.04.2015.1) Oil leakage of following equipments to be attended 1)220KV TSS-2 R & Y Ph CT2)220/132KV, 100MVA ICT-I & II3) 132/33KV, 25 MVA TF- I & II

Yes

Yes (except 132/33KV, 25 MVA TF-

I)

Pending

2)Last C/D Cycle carried out on 12.04.2012 Yes Yes CD cycle carried out on

dt.14.03.20153) Grass cutting is required. Yes Yes Under process.4) Earth leakage ammeter on charger is faulty Yes Yes Attended

5) Vermin proofing needs to be improved Yes Yes Done by agency on dt. 02.12.2015

6) 220/33KV, 100MVA ICT-1 & 2132/33KV 25 MVA T/F-1 & 2Cooling fans not working in auto mode.

Yes No Contactor Faulty.

E-tender for repairs of T/F cooling fan is under process.

7) Earth resistance value to be confirmed. Yes Yes Attended

8) Metal spreading required. Yes NoRequirement sent to Civil Division vide ltr. no. 1866 Dt. 07.08.2013.

9)Post Monsoon LCM not carried out. Yes Yes Attended

10)Earth leakage to be attended. Yes NoEarth leakage Kit is not available. Requirement sent

1) 48V Battery bank:Cell no 18 specific gravity to be confirmed Yes Yes Done & results are within

limit.2)110V Battery bank Cell no 42 specific gravity to be confirmed Yes Yes Done & results are within

limit. 3)132/33KV, 50MVA, T/F-2: Oil leakage observed in turret CT Yes No Tender under process at

circle level 4)132/33KV, 50MVA, T/F-3: OTI meter faulty Yes Yes Attended

5)Vermin proofing needs to be improved Yes Yes Attended

18

19 220KV Virur S/Stn 220KV

20 132 KV Pardi S/Stn 132 KV

220KV220KV Virur S/Stn 19

220KV220KV Warora S/Stn

Yes/ No


If not attended,

reason

Yes/ No






Sr. No.


Protection Audit

S/s voltage




6)Earth resistance value to be confirmed. Yes Yes Attended & results are within limit.

7) 132KV UppalwadiR-Ph -191µΩY-Ph – 131 µΩB-ph -120 µΩ CRM value to be confirmed

Yes YesCRM result taken on dt. 27.01.2016. R=212,Y=135,B=235

8) 25MVA, 132/11KV T/F-3 (EMCO)132KV B-PHIr = 233 microA It = 1112 microAIR values of LA stack needs to be confirmed

Yes Yes Ir=117,It=522

9)132KV Uppalwadi132KV B-PHIr = 261 microA It = 80 microAIR values of LA stack needs to be confirmed

Yes Yes Ir=118,It=467

1)48V battery bank Efficiency 67%. Needs to be replaced Yes Yes

Efficiency wrongly mentioned by M/S Devshree, Nagpur. 02 nos. of negative cells replaced by new cells. Now Efficency increase from 20% to 50%.

2)Vermin proofing needs to be improved Yes Yes Done as ULTB works carried out.

3)Oil leakage 25 MVA, 132/11KV T/F-I to be attended. Yes No Tender under process at

circle level 4)Earth resistance value to be confirmed. Yes Yes Within Limit5) 132/33KV 50MVA T/F-I (CGL)R-Ph -195Y-Ph – 195B-ph -96 Repeat the CRM

Yes Yes

5) 132/33KV 50MVA T/F-I (CGL)R-Ph -76.1Y-Ph – 73.4B-ph -64.2

6) 33KV Vinkar R-Ph - 115Y-Ph – 111B-ph -110.3 Repeat the CRM

Yes Yes

6) 33KV Vinkar R-Ph - 85Y-Ph – 79B-ph -55

132 KVBesa S/Stn 21

20 132 KV Pardi S/Stn 132 KV

132 KV

Yes/ No


If not attended,

reason

Yes/ No






Sr. No.


Protection Audit

S/s voltage




7) 33KV KSL-I (CGL)R-Ph -191.8Y-Ph – 139.3B-ph -164.7 Repeat the CRM

Yes Yes

7) 33KV KSL-I (CGL)R-Ph -83Y-Ph – 94B-ph -89

8) 33KV VinkarR-Ph -62Y-Ph – 61B-ph -62 Repeat the timing

Yes Yes

8) 33KV VinkarR-Ph -67Y-Ph – 65B-ph -68 Megawin breaker has the tripping time more than 60 ms.

9)33KV AanandanR-Ph -64Y-Ph – 64B-ph -64 Repeat the timing

Yes Yes

9)33KV AanandanR-Ph -36Y-Ph – 36B-ph -36

10) 33KV KSL-II (ALSTOM)R-Ph -58Y-Ph – 58B-ph -60 Repeat the timing

Yes Yes 78

1) 48V battery bank: Efficiency not confirmed. Yes Yes 2% 2)25MVA 132/11KV T/F-I & II Oil leakage to be attended Yes Yes Attended

3) Vermin proofing needs to be improved Yes Yes Attended4)Metal spreading in yard is required. Yes Yes Attended

5)Earth leakage to be confirmed. Yes Yes

Test done but not detected as earth leakeage is negligable, hence cannot show in earth meter.

6)Earth resistance value to be confirmed. Yes Yes Within range 7)132/33KV 50MVA T/F-II (CGL)R-Ph -111.2Y-Ph – 126.2B-ph -126.8 Repeat the CRM

Yes Yes

R-Ph -126.5Y-Ph – 136.7B-ph -145.6 As it is old breaker hence guidance required.

21 132 KV Besa S/Stn

132 KV

132 KVBesa S/Stn 21

22 132KV Mankapur S/Stn

132 KV

132 KV

Yes/ No


If not attended,

reason

Yes/ No






Sr. No.


Protection Audit

S/s voltage




8) 33KV NaraR-Ph -47Y-Ph – 196.8B-ph -199 Repeat the CRM

Yes YesR-Ph -52.8Y-Ph – 171.9B-ph -172.9

9) 33KV MRS UGR-Ph -58Y-Ph – 57B-ph -57 Repeat the timing

Yes YesR-Ph -57Y-Ph – 57B-ph -58

10) 33KV Amravati road gorewadaR-Ph -62Y-Ph – 60B-ph -60 Repeat the timing

Yes YesR-Ph - 61Y-Ph – 65B-ph - 69

11)132KV Ambazari-I132KV R-PHIr = 264 microA It = 1095 microAY-Ph Ir = 280 microA It = 1067 microAB Ph Ir = 221 microA It = 1078 microAIr values of LA stack needs to be confirmed.

Yes Yes

Ir = 123 microA It = 544 microAY-Ph Ir = 127 microA It = 505 microAB Ph Ir = 120 microA It = 543 microA

12) 132KV Hingna-I132KV Y-Ph Ir = 183 microA It = 1025 microAB Ph Ir = 323 microA It = 1107 microAIr values of LA stack needs to be confirmed

Yes Yes

Y-Ph Ir =156 microA It = 1017 microAB Ph Ir = 104 microA It = 651 microA

13) 132KV Uppalwadi-IY-Ph Ir = 225 microA It = 1103 microAB Ph Ir = 155 microA It = 963 microAIr values of LA stack needs to be confirmed

Yes Yes

Y-Ph Ir = 196 microA It = 1103 microAB Ph Ir = 137 microA It = 948 microA

132 KV

132KV Mankapur S/Stn 132 KV 22

22 132KV Mankapur S/Stn

Yes/ No


If not attended,

reason

Yes/ No



1 BABHALESHWAR 400Zone 1 seeting of 400kV & 220kV lnes are set to 90% instead of 80% which needs to be revised to 80%.

NA NA NA NA NA NA To be carried out by external agency

2 DHULE 400 Found in order NA 26.12.2014

3 KHADAKA 400 Found in order NA NA NA NA NA NA 26.12.2014

4 DEEPNAGAR 400 Found in order NA NA NA NA NA NA 26.12.2014

5 MALEGAON 220 Found in order NA NA NA NA NA NA 22.09.2014

6 NASHIK GCR 220 Found in order NA NA NA NA NA NA 30.07.2014

7 NASHIK OCR 220 Found in order NA NA NA NA NA NA 30.07.2014

8 BABHALESHWAR 220 Found in order NA NA NA NA NA NA 20.12.2014

9 DHULE 220 Found in order NA NA NA NA NA NA 26.12.2014

10 CHALISGAON 220 Found in order NA NA NA NA NA NA 26.12.2014

11 DEEPNAGAR GCR 132 Found in order NA NA NA NA NA NA 22.11.2014

12 DEEPNAGAR ECR 132 Found in order NA NA NA NA NA NA 22.11.2014

Present Status of Protection Audit Deficiencies (A & B type) in MSETCL for the year 2014-15 as on 31/01/2016Name of Zone:Nasik

Sr. No.


Protection Audit

S/s voltage






Yes/ No


If not attended,

reason

Yes/ No



1 400kV Lonikand II 400kV Forcebly ON/OFF command bypassing interlocks of isolator through Areva Make SCADA

Yes Yes.For isolators forcebly ON/OFF commands

disable through SCADA

2 220kV Talegaon 220kV1) Zone 1 seeting of 400kV & 220kV lnes are set to 90% instead of 80% which needs to be revised to 80%.

YES Yes.

Siemens make distance protection relay suaitable for short distance line is

provided.

3 220kV Bhosari I 220kV

For selective tripping of TBC CTs to be provided for TBC bay. After commissioning of 220KV Bussectionalizer (ABB make PASS) modification of configuration and wiring in busbar is required,

Yes No Jun-16For Bus Bar configuration,matter is taken with M/S NR.

4 132kV Kharadi 132kV132kv Markal Line Backup relay is Static type needs to be replaced. TC1 & TC2 relay are faulty, Trip Coil 2 is fault

YES Mar-16 Work is in progress

5 132kV Ganeshkhind 132kV Display of 132KV Chinchwad bay Distance

relay Make-GE is faulty. Yes No Mar-16 Matter is taken with M/S GE by O&M authority.

1) 132kV Ujani line Distance relay found faulty and replaced. Yes Yes2) 132kV Akkalkot Line problem in N/T switch wiring. Yes Yes

7 220kV South solapur 220kV

1) BCU and BU were clubbed and therefore AREVA make MICOM C264 firmware upgradation required.

Yes Yes

6 220kV Bale 220kV

Present Status of Protection Audit Deficiencies (A & B type) in MSETCL for the year 2014-15 as on 31/01/2016Name of Zone:Pune

Sr. No.


Protection Audit

S/s voltage






1 2 3 4 5 6 7 8 9 10 11

Yes/ No


If not attended,

reason

Yes/ No




Yes Yes Carried out on 27.05.15 & completed.

2) Zone 3 setting of 400kV Kalwa line is to be revised as per guidelines. Yes Yes Carried out on 27.05.15

& completed. 3) Reverse Zone (Zone 4) time delay setting for 400kV & 220kV lines are to be revised to zone 3 time delay (700 msec)


4) PSB blocking for all zones (Z1, Z2 & Z3) & unblock time delay for 400kV lines are to be revised to 2 sec.


5) 315MVA, 400/220kV ICT - 1 & 2 HV & LV Back up relay setting are to be revised as per guidelines.


6) For 315MVA, 400/220kV ICT-2, the transformer trip protections are not grouped as per guidelines 9i.e. Group-A & Group-B), which needs to be modified.

Yes No Will be completed by 30.04.2016

7) For 80MVR, Reactor, the protections are not grouped as per guidelines, which needs to be modified.

Yes No Will be completed by 30.04.2016

8) DRs of 315MVA 400/220kV ICT -1 & 2 are to be reconfigured as per guidelines. Yes No

Work in progress & Will be completed by 30.04.2016

9) Zone 2 & 3 setting of all 220kV lines is to be revised as per guidelines. Yes Yes

Carried out on 27.05.2015 & Completed.

10) 400kV & 220kV lines parameters setting are to be verified with remote end s/s.

Yes YesCarried out on 27.05.2015 & Completed.

11) On line direction of B/U EF relays for all 220kV lines are to be confirmed. Yes Yes Confirmed on 20.10.2015

& completed.

400/220kV Kharghar1

1 400/220kV Kharghar 400KV

400KV

Present Status of Protection Audit Deficiencies (A & B type) in MSETCL for the year 2014-15 as on 31/01/2016

Name of Zone: Vashi

Sr. No.


Protection Audit

S/s voltage






1 2 3 4 5 6 7 8 9 10 11

Yes/ No


If not attended,

reason

Yes/ No




Name of Zone: Vashi

Sr. No.


Protection Audit

S/s voltage






12) 50MVA, 220/33kV TF-1 TF auxiliarly protection relay (30GHI) is found to be faulty, which needs replacement.

Yes NoRelay received after repairing, same will be fixed during outage___ by 30.04.2016

13) For 220kV lines & 50MVA TFs, CB status & TF auxiliary BI are not taken for DR, which needs to be wired up.

Yes NoWork in progress & Will be completed by 30.04.2016

1) Zone3 setting of 400kV lines are to be revised as per guidelines. Yes Yes2) Reverse Zone (Zone 4) feature is not available in 400kV Padghe-1 &2 and Kharghar for both Main1 & 2 (7SA513)

Yes No

3) As per guidelines, DR signals could not be configured as the relays are of old version, needs to be replacement.

Yes No

1) VT fuse failure time delay for 220kV lines is set 3 sec which needs to be revised to 5 sec.

Yes Yes

2) On line direction of B/U EF relays for all 220kV lines are to be confirmed. Yes Yes3) Zone 2 setting of 220kV Taloja line is to be revised as per guidelines. Yes Yes4) Zone 2 setting & time coordination for 220kV Apta -Kalwa line is to revised in coordination with EE testing, panvel.

Yes Yes

The scheme for replacment of all CP & RP by BCPP panel is sent to CO for approval on Jan 16

3 220/100KV Kalwa 220KV

2 400/220kV Kalwa 400KV

1 400/220kV Kharghar 400KV

1 2 3 4 5 6 7 8 9 10 11

Yes/ No


If not attended,

reason

Yes/ No




Name of Zone: Vashi

Sr. No.


Protection Audit

S/s voltage






1) Zone 1 setting of 220kV Kalwa/ Tambati/Bombay dying lines are set to 90% instead of 80% which needs to be revised to 80%.

Yes Yes

2) Zone 2 & 3 setting of 220kV Kalwa line is to be revised considering the new 220kV AKP & Bapgaon line length.

Yes Yes

3) Zone 2 setting of 220kV ACCIL line is to be revised. Yes Yes4) Reverse Zone (Zone 4) time delay setting for all 220kV lines are to be revised to zone 3 time delay (700 msec)

Yes Yes

5) PSB blocking for all zones (Z1, Z2 & Z3) & unblock time delay for all 220kV lines are to be revised to 2 sec.

Yes Yes

6) Back up relay setting for all 220kV lines are to be revised considering ROT of 500msec.

Yes Yes

7) On line direction of B/U EF relays for all 220kV lines are to be confirmed.

Yes YES

8) The 220kV HOC line Pilot wire protection, HORM4 is not in service, which needs replacement.

Yes No

Tender for Supply, Errection & commissioning of Numerical line differential protection relay & ADSS cable required for communuication is published by Zone office but due to poor response, again tender is being floated separately by zone office.

9) Zone 1 setting of 100kV Patalganga line is to be revised to 80%. Yes Yes

4 220kV Apta 220kV

4 220kV Apta 220kV

1 2 3 4 5 6 7 8 9 10 11

Yes/ No


If not attended,

reason

Yes/ No




Name of Zone: Vashi

Sr. No.


Protection Audit

S/s voltage






10) Zone 2 & 3 setting of all 100kV lines are to be revised as per guidelines. Yes Yes11) Reverse Zone (Zone 4) time delay setting for all 100kV lines are to be revised to zone 3 time delay (700 msec)

Yes Yes

12) PSB feature of all 100kV lines are to be disable. Yes Yes13) On line direction of B/U EF relays for all 100kV lines are to be confirmed. Yes Yes14) Back up relay setting for all 100kV lines are to be revised considering ROT of 500msec.

Yes Yes

15) Zone 2 setting & time coordination for 220kV Apta -Kalwa line is to revised in coordination with EE testing, Kalwa.

Yes YesRevised considering Mulund as a shortest line

1) Zone 2 setting of 220kV Tarapur lines are to be revised by considering 120% of protected line. Yes Yes

2) Zone -2 time of 220kV Kalwa line is to be cordinated with 220kV Kalwa - AKP line.

Yes Yes

3) Reverse Zone (Zone 4) time delay setting for all 220kV lines are to be revised to zone 3 time delay (700 msec)

Yes Yes

4) 200MVA, 220/100MVA ICT-1 HV & LV Backup relay settings are to be revised as per guidelines.

Yes Yes

2) Zone 2 setting of 220kV HOC, Apta- 2, 3 &4 lines are to be revised as per guidelines.

Yes Yes

3) Zone 3 setting of 220kV HOC is to be revised as per guidelines. Yes Yes

4 220kV Apta 220kV

5 220kV Borivali 220KV

1 2 3 4 5 6 7 8 9 10 11

Yes/ No


If not attended,

reason

Yes/ No




Name of Zone: Vashi

Sr. No.


Protection Audit

S/s voltage






4) Zone 4 setting for 220kV HOC, Apta 2, 3 & 4 lines are to be revised as per guidelines (2 kM)

Yes Yes

5) Reverse Zone time delay setting for all 220kV lines are to be revised to zone 3 time delay (700 msec)

Yes Yes

6) VT fuse fail setting for 220kV Apta 3, 4 & Kharghar 1, 2 and JNPT are to be revised as per guidelnes (80mA & 40mA respectively)

Yes Yes

7) 220kV lines parameters setting are to be verified with remote end s/s and respective line s/Dn. For 220kV Apta 2, 3 & 4.

Yes Yes

8) For 220kV Uran - HOC line PUR scheme is not in service, which needs to be taken into service.

Yes Yes

9) PSB blocking for all zones (Z1, Z2 & Z3) & unblock time delay for all 220kV lines are to be revised to 2 sec.

Yes Yes

10) The B/U relay OC setting for 220kV Apta 3, Kharghar 2 lines are to be revised as per guidelines.

Yes Yes

11) The B/U relay for all 220kV lines are to be revised considering ROT 500msec. Yes Yes12) On line direction of B/U EF relays for all 220kV lines are to be confirmed. Yes Yes13) DR of all 220kV Lines & TFs are to be set to trigger for any start/trip signals. Yes Yes14) For DR triggering the BI for TF are to be configured for transformer aux. protection.

Yes Yes

1 2 3 4 5 6 7 8 9 10 11

Yes/ No


If not attended,

reason

Yes/ No




Name of Zone: Vashi

Sr. No.


Protection Audit

S/s voltage






1) Zone 2 & 3 setting for 220kV Mulund, Kharghar & Sonkhar lines are to be revised as per guidelines.

Yes Yes

2) Resitive reach for ground fault is not set for all 220kV lines, which needs to be set as per guidelines.

Yes Yes


Yes Yes

4) The Auto reclose for all 220kV lines are not in service, it is suggested to take A/R in service.

Yes No

The DPR SEL421 relay configuration issue for AR scheme. ER support for the same not available Followup with ER is on to take the AR scheme in service. __ by June-2016

5) PSB unblock time delay for all 220kV lines are to be revised to 2 sec. Yes Yes6) TF Protections are to be grouped Group-A & B as per guidelines. Yes Yes7) HV B/U of 200MVA 220/100kV ICT 1 & 2 are non directional, which needs to be made directional.

Yes Yes

8) DR of all 220kV Lines & ICTs are to be set to trigger for any start/trip signals. Yes Yes1) Zone 2 setting for 220kV Pirngute, Bhira, Koyana, Sonaallid & ONGC lines are to be revised as per guidelines.

Yes Yes


Yes Yes

3) AR dead time for all 220kV lines are set to 0.8 sec instead of 1 sec, which needs to be revised.

Yes NoProposal under process__09.08.2016.

7 220kVTrombay 220kV

Settings are revised

8 220kV Kandalgaon 220 kV

1 2 3 4 5 6 7 8 9 10 11

Yes/ No


If not attended,

reason

Yes/ No




Name of Zone: Vashi

Sr. No.


Protection Audit

S/s voltage






4) PSB unblock time delay for all 220kV lines are to be revised to 2 sec. Also after unblock time is over, PSB trip should be activated.

Yes Yes

5) On line direction of B/U EF relays for all 220kV lines are to be confirmed. Yes Yes6) The 100KV lines B/U OC setting is to be revised as per guidelines. Yes Yes8) HV B/U of 100MVA 220/100kV ICT 2 & 50MVA 220/100kV ICT 1 are non directional, which needs to be made directional.

Yes Yes

1) The 220V DC source 1 & 2 for 400kV lines & ICTs are to be confirmed for Group -A & B separately.

Yes YesDC sources seperation work completed in December 2015

2) For 400kV lines Zone Zp is to be made reverse & accordingly reverse zone reach & time are to be set as per guidelines.

Yes Yes

3) For all 400kV lines Main-1 protection , SOTF function is disable, which needs to be made enable.

Yes Yes

4) For 400kV Dabhole 2, overvoltage setting & time delay are to be revised as per guidelines.

Yes Yes

5) For 400kV Padghe 1 & 2 and Dhabole 1, PSB unbloced time is to be revised to 2 sec. For 400kV dabhole 2, all zones are to be blocked with unblock time to 2 sec.

Yes Yes

6) 315MVA, 400/220kV ICT 1 & 2 and 500MVA 400/220kV ICT 3, cooler control system is in manual mode to be taken into auto mode.

Yes No Work is in progress__29.02.2016.

400/220kV Nagothane9

9 400/220kV Nagothane 400KV

400KV

8 220kV Kandalgaon 220 kV

1 2 3 4 5 6 7 8 9 10 11

Yes/ No


If not attended,

reason

Yes/ No




Name of Zone: Vashi

Sr. No.


Protection Audit

S/s voltage






7) DR of all 400 & 220kV Lines & ICT/TFs are to be set to trigger for any start/trip signals.

Yes Yes

8) DT send digital channel is to be configured for DR. Yes Yes9) CB contact in LBB circuit for 400 & 220kV lines are to be bypassed. Yes Yes10) For 220kV lines, zone3 time delay settings are to be revised as guidelines. Yes Yes11) For 220kV ACCIL & POSCO line SOTF/TOR to be made enabled. All 220kV Lines SOTF delays is to be revised 1 sec.

Yes Yes

12) For all 220kV lines AR is set to 1ph + 3ph trip which is to be revised to 1 ph. Yes Yes13) PSB unblock time delay for all 220kV lines are to be revised to 2 sec. Yes Yes14) The 220KV lines B/U OC setting is to be revised as per guidelines. Yes Yes15) On line direction of B/U EF relays for all 220kV lines are to be confirmed. Yes Yes1) Zone 1 setting for all 400kV & 220kV lines are tb revised to 80% intead of 90% presenet adopted.

Yes Yes

2) Zone 2 & 3 setting for 400kV Kalwa 1 &2 and Zone 3 setting for 400kV Boisar, Tarapur 1 & 2 lines are to be revised as per guidelines respectively.

Yes Yes

400/220kV Nagothane9

10 400/220kV Padghe

400 / 220kV

400KV

1 2 3 4 5 6 7 8 9 10 11

Yes/ No


If not attended,

reason

Yes/ No




Name of Zone: Vashi

Sr. No.


Protection Audit

S/s voltage






3) For relay setting calculation of 400kV boisar line, the longest line length from Boisar(PGCIL) s/s is considered 94kM for calculation purpoase. However after telephonic discussion with PGCIL engineer, the line length is 102kM, sme may be confirmed & accordingly setting can be changed.

Yes Yes

4) For all 400kV lines, the SOTF feature is enabled for Z1 & Z2 fault impedance only. It is suggested to modify the setting for all zones i.e. Z1, Z2 & z3 fault impedance.

Yes Yes

5) It is observed that in MICOM P442 numerical distance protection relay , Auto reclose mode is kept 1/3 i.e. single/three phase mode. It is suggested to changed the AR mode to 1 i.e. single phase wherever it is possible.

Yes Yes

6) For verification of correctness of Resistative reach setting for ground & phase fault, data of remote end TF capacity & % impedance considered, however for one of the s/s it is not matching with present Tf capacity. It is suggested to verify the data from remote end and modify the setting accordingly.

Yes Yes

7) Reverse Zone time delay setting for all 400kV & 220kV lines are to be revised to zone 3 time delay (500 &700 msec respectively)

Yes Yes

8) B/U HV & LV realy of 400kV ICT 1 , 2, 3 & 4 ROT is kept 650msec, the ROT of these b/u relays are to be revised to 500msec as per guidelines.

Yes Yes

10 400/220kV Padghe

400 / 220kV

400 / 220kV

400/220kV Padghe10

1 2 3 4 5 6 7 8 9 10 11

Yes/ No


If not attended,

reason

Yes/ No




Name of Zone: Vashi

Sr. No.


Protection Audit

S/s voltage






9) 400kV ICT-4 the RTCC panel is not provided, which needs to be purchased/ provided and commissioned immediately.

Yes No Scheme is being prepared

10) The local / remote operation of OLTC of 400kV ICT 1, 2 & 3 are not checked as panels are old. It is suggested to checked & if not operative, necessary overhauling or replacement is to be done.

Yes Yes

11) WTI / OTI reading of all 400kV ICTs are not matching with the meter provided at RTCC, same may be checked & correced.

Yes Yes

12) The 400kV Bus & line reactor are provided with all static relay except impedance relay, thes relays needs to be replaced by state of art numerical relays.

Yes No Requirement is submitted at CO

13) The differential relay RET670 ABB make of 400kV ICT 2 is having diplay problem as such HIM of relay is not showing any data, it is suggested to replaced the said relay by spare one and the relay for repair at M/s ABB works.

Yes Yes

14) The Main -2 distance protection of 400kV Kalwa 1 REL 670 relay is having display problem & needs replacement. The spare relay is available at site, hence it is suggested to retrofit/replace the main 2 faulty relay immediately.

Yes Yes

15) Zone 2 & 3 setting for 220kV Nashik 2 and for 220kV Nalasopara line, Zone 2 & 3 setting is to be revised to 120% & 200% of line length as it is redial feeding s/s. The settings are revised accordingly.

Yes Yes

10 400/220kV Padghe

400 / 220kV

400 / 220kV

400/220kV Padghe10

1 2 3 4 5 6 7 8 9 10 11

Yes/ No


If not attended,

reason

Yes/ No




Name of Zone: Vashi

Sr. No.


Protection Audit

S/s voltage






16) The 220kV lines B/U relay, the EF Plug setting is to be revised to 30% as per guidelines.

Yes Yes

17) The 220kV lines B/U relay setting ROT is to be revised to 500msec as per guidelines.

Yes Yes

18) The 220kV ICT B/U HV & LV relay setting is to be revised considering the ROT 500msec & 400msec respectively.

Yes Yes

19) The HV & LV bB/U relay setting for 50MVA, 220/22kV TF 1 & 2 are to be revised considering the ROT 500msec & 350msec as per guidelines.

Yes Yes

20) On line direction of B/U EF relays for all 220kV lines are to be confirmed. Yes Yes

21) The B/U relays of 440kV & 220kV ICTs are old electromechnical/static, which needs to be replaced by numerical relays.

Yes Yes

22) The local/remote operation of OLTC of 220kV ICT 2, 3 & 4 and 50MVA TF 1 & 2 are not checked. It is suggested to checked & if not operative, necessary overhauling or replacement is to be done.

Yes Yes

23) The ABB make SMS is not working. Further M/s ABB is also not responding even after continous follow up by concerned, the issue must be taken up at CO & bring the SMS scheme in service.

Yes Yes

400 / 220kV

400/220kV Padghe10

10 400/220kV Padghe

400 / 220kV

1 2 3 4 5 6 7 8 9 10 11

Yes/ No


If not attended,

reason

Yes/ No




Name of Zone: Vashi

Sr. No.


Protection Audit

S/s voltage






24) The GPS of SMS system is not working, as such relays are not synchronised with GPS and time stamped DR is not available. It is suggested to take up the issue with supplier & bring the GPS system in service.

Yes Yes

25) The LBB relays for 440kV & 220kV lines/ICT/TF are not provided with separate DC circuit independent from Gr. A & Gr. B except 400kV Tarapur 1 & 2 and Talegaon. The necessary modification is to be done in this respect.

Yes Yes

400 / 220kV

400/220kV Padghe10

WhethreAttendedYes/No

ifnotattendedreason

1Time delay setting for Zone-3 is given as 500ms, which is verylow and it should be revised as per CBIP recommendation or inco-ordinationwithMPPTCLsettingforZone-3thatis700ms.

YES Time delay settings changed from 500ms to 700ms on20.09.2013.

SYD

2 Thermovision survey/thermal scanning is being done annually,itshouldbedonemonthly. No UnderProcess Tendercancelled.Freshcaseisbeinginitiated. SYD

3As per latest guidelines directional earth fault Protection is tobe provided on 400 KV Lines. It can be provided throughexistingnumericalDPRs.Itissuggestedtoprovidethesame.

YES Directional earth fault protection in all four feeders hasbeenenabledinnumericalrelayREL-670

4 Partial DC leakage observed in battery sets of power plant. It issuggestedtorectifythesame. YES Problemrectified.

WhethreAttendedYes/No

ifnotattendedreason

1

In general voltages observed around 420KV to 430KV whengenerating machines are off. Therefore to control overall highvoltage problem it is suggested to provide either 2x50 MVArshunt reactors on 400KV Bus at ISP or 50 MVAr line reactorsshould be provided on 400KV ISP-Sarni (200 Kms) line and on400KVISP-Nagda(189Kms)lineonboththeends.

No UnderProcessFor design, supply, erection, testing & commissioning workof 125 MVAr shunt reactor, tender opened on 15.12.2015,caseisunderTEC.

SYD

(Categaory-B)

S.No. ObservationsofProtectionAudit

Deficiencies that can not be corrected without procurement

(Category-B)Remarks

22-23-Feb-2013

Category-A

Sr.No. ObservationsofProtectionAudit

Deficiencies that can be corrected without procurement

(Category-A)Remarks

INDIRA SAGAR POWER STATION (8X125=1000MW)

PROTECTION AUDIT DEFICIENCIES AND OBSERVATION COMPLIANCE(Report for the quarter Oct-2015 to Dec-2015)

SUBSTATION VOLTAGE 400 KV

NAME OF PROCTECTION AUDIT AGENCY MPPTCL & MPSLDC members

2

On observation of higher voltages on R-phase of 400 KV Sarnicircuit, as a precautionary measure it is suggested to replacethe R-phase CVT of Sarani circuit by spare CVT available at sitetoeliminatethepossibilityofequipmenterror.

YES CVT of R-phase of ISP-Sarni feeder at ISP end replaced byspareCVTon06.06.2013.

SYD

3

Battery capacity test carried out by keeping battery charger offfor 1 hour, a voltage drop of 6 percent observed. Thesebattery sets were commisioned in 2003 and have completedalmost 10 years. Further suitability of these battery setsshould be confirmed by consulting manufacturer and byconductinglongdurtationhighcurrentdischargecapacitytest.

No UnderProcess

Tender issued for servicing and conducting high currentdischarge test of 220V bttery banks installed at ISPS hasbeen cancelled. Since these battery sets are in service formore than 12 years, replacement of these battery sets withnew sets of batteries are being considered and case forprocurementofthesameisunderprocess.

4Tan delta and capacitance test of transformer bushings arebeing done once in three year. It should be done once in ayear.

YESAll the diagnostic tests of generator transformers includingcapacitance and tan delta tests of transformer bushingshavebeeenconductedinNov-Dec2015.

of2

NameofUtility:JPBina ReportfortheperiodofOct2015-Dec2015

Yes/NoWhetherattendedYes/No

Ifnotattended,rea

sonYes/No

WhetherattendedYes/No

Ifnotattended,re

ason

1)UAT1&2forunit1stillnotcommissioned Yes Yes NA NA NA NA

AlltheUATofUnit1&2havebeencommissioned(Complied)

2) GPSsystemnotcommissioned Yes Yes NA NA NA NA

GPSsystemofwholestationcommissioned(Complied)

3)2no.OfHighMasttowerinstallednear400KVtransferbusintheswitchyard No YES NA NA NA NA

BoththehighmasthasbeenshiftedtooutsidecornersoftheSwitchyard(Complied)

4)DR&ERisprovidedinSCADAsystem. Yes yes NA NA NA NA

ItisavailableinourSCADAsystem(Complied)

5)BatterycellvoltageneedtoberecordedwithrespectivechargerinOFFcondition. Yes yes NA NA NA NA

Batterycellvoltageisnowbeingrecordedrespectivetochargerinoffcondition.(Complied)

6)DirectinalE/Frelaysetting1sec.forPGCIL1.2Sec.forMPPTCLlineisprovided.Thisisonhigherside,tobereviewed&revise

Yes

CommentsfromourconsultantM/STCEisgiven

NA NA NA NA

AnswerfromourconsultantM/STCE:Directionale/fisprovidedtoprotectthesystemfromhighimpedancelinefaultswherefaultcurrentsarelow.So1secoperatingtimeissufficientandcanbeusedforboththelines.Decreaseintheoperatingtimemaycauseittointerferewith3rdzonetimesettings.(Settingisinorder.Hencecomplied)

7)Overvoltagesettingfor400kvPGCIL&MPPTCLlinearenotasperCBIPrecomendetion(CBIPREV274).

Yes


NA NA NA NA

OurconsultantTCE'sreply:Pleasenotethataninstantaneousovervoltagesettingof130%phasetophasecanbeused.Asperstandardpracticelinesarecapableofwithstanding150%ofhighestsystemvoltageatpowerfrequencyfor1minute.Soabovesettingsareok.(Settingisinorder.Hencecomplied)

Dateonwhichaudit

conducted

ObservationofprotectionAudit

NameofThirdparty

ProtectionAuditagency

Remark

JaypeeBinaThermalPower

Plant400KV SLDC,Jabalpur

14/02/2013-15/02/2013

FORMATFORPROTECTIONAUDITDIFFICIENCIES/OBSERVATIONSCOMPLIANCE

Deficienciesthatcanbecorrectedwithoutprocurement(Category-A)

Deficienciesinvolvingprocurement(Category-B)NameofS/S

identifiedforprotectionAudit

S/Svoltage

of2

NameofUtility:JPBina ReportfortheperiodofOct2015-Dec2015

Yes/NoWhetherattendedYes/No

Ifnotattended,rea

sonYes/No


Ifnotattended,re

ason

Dateonwhichaudit

conducted

ObservationofprotectionAudit

NameofThirdparty

ProtectionAuditagency

Remark



14/02/2013-15/02/2013

FORMATFORPROTECTIONAUDITDIFFICIENCIES/OBSERVATIONSCOMPLIANCE

Deficienciesthatcanbecorrectedwithoutprocurement(Category-A)

Deficienciesinvolvingprocurement(Category-B)NameofS/S

identifiedforprotectionAudit

S/Svoltage

8)GT&STfifthharmonicsblockingisdonefor20%.Thismaybestudies&revised.

Yes


NA NA NA NA

ReplyfromconsultantTCE;Asperrecommendationfromrelaymanuals,settingof15to30%isusedforfifthharmonicblocking.Asperourstandard20%isusedfifthharmonicblocking.(Settingisinorder.Hencecomplied)

9) Itisobservedthatforganretorprotectionunderfrequencyrelaytripsetting48.5Hzfor5sec.&overfrequencyrelaytripsetting51.0Hzfor5sec.Istaken,thesamemaybereviewed.

Yes


NA NA NA NA

OURconsultantreplyFrequencyprotectionisusedmainlyforalarmandasperourpracticeatimedelayof5secisadequate.(Settingisinorder.Hencecomplied)

10)Inturnprotectionhasnotbeenprovided,throughitisrecommendedforGeneratormorethan100MVA. Yes


NA NA NA NA

OurconsultantTCE'sreply;Asperourstandardpractice,inter-turnprotectionisprovidedonlywhenspecificallyrecommendedbythemanufacturer.(Itisinorder.Hencecomplied)

11)Periodicaltestingofrelays&yardequipmentmustbedone.

Yes NA NA NA

Periodicaltestingofrelay&yardequipmentshasbeendone.



14/02/2013-15/02/2013

MPPGCLprotectionauditstatus

Page9of10

State:- Madhya PradeshENTITY - MPPGCLQuarterly Report for the period of October 2015 to December 2015

ANNEXURE-III

S.NO

NAMEOFS/sIDENTIFIEDFORPROTECTIONAUDIT

S/sVOLTAGEOBSERVATIONSOFPROTECTIONAUDIT(DATEATWHICHPROTECTIONAUDITCONDUCTEDi.e22/04/13&23/04/14.)

PRESENTSTATUS

YES/NOWHETHERATTENDEDYES/NO

IFNOTATTEND,REASON


IFNO,EXPECTEDDATETOATTEND

1 BARGIHPS 132KVSUB-STATION

DPRrelaysettingofthe132KVJabalpur1,Jabalpur2andLakhnadonfeederstobereviewed

YES YES COMPLETED


220VDCsystemhavingpositiveearthfaultandmixingoftheDCsource1and2isobserved.Periodicalloadtestofthebatterymay

beensured.YES YES COMPLETED


The132KVswitchyard,PowerHouseandequipmentneedsmoreattentiontowardsitsupkeeping.

YES YES COMPLETED


Recordsofthemockdrill/trialofthefirefightingequipmentsandDGsetarenotavailableatBargiPowerStation.

YES YES COMPLETED


AllExistingElectomechanical/ElectostaticRelaystobereplacedwithnumericalrelays.

YES NO Dec-16Budgetaryofferforreplacingallelectromechanicalrelay

withNumericalRelayforsupplywithcompleteretrofittingjobisbeingawaited.


FireFightingsystemwithCO2Cylindersareavailableatpowerstationbutitisobservedthatitisinthemannualmode.Itmaybein

theautomode.YES NO Dec-16 ThecaseofrepairingandupgradingofCO2systemis

underprocess.

7 BARGIHPS132KVSUB-STATION

TheFacilityofDR/SERisnotavailableattheHPSBargi. YES NO Dec-16ThefacilityofDR/SERisprovidedintheofferofM/sABBforretrofittingofnumericalrelaypanelwhichisinthe

process.


GPSFacilitiesisnotavailable. YES NO Dec-16 PreparationofTechnicalspecificationisunderprogress.


132KVMOCBinstalledon132KVJabalpur-1,Jabalpur-2,Lakhnadon,buscouplerbayand20MVAtransformertobereplaced

withSF6CircuitBreaker.YES NO Dec-16

Budegtaryofferforprocurementof132KVSF6breakerfromM/sCromptonGreaves,ABB,Siemensetc.are

awaited.


LBBRelaynotprovidedonthe132KVJabalpur-1,Jabalpur-2,LakhnadonFeeders. YES NO Dec-16

ProvisionforLBBrelayon132KVJBP-1,JBP-2,LKDfeedersisbeingincorporatedinfreshprocurementcaseof

numericalrelaysandshallbecommissionedinfuture.


132KVRphaseCTofBusCoupler(Bus-I)isnotavailable. YES NO Dec-16CTWILLBECOMMISSIONEDSHORTLYASPERAVALIABILTY

ANDSHUNTDOWN.


BusBarProtectionisnotinservice. YES NO Dec-16PROCUREMENTOFBUSBARPROTECTIONISUNDER

PROCESSANDATPRESENTBUDGETARYOFFERISASKEDFROMFIRM.

NAMEOFUTILITY:MPPGCL

DEFICIENCIESTHATCANBECORRECTEDWITHOUTPROCUREMENT

(CATEGORY-A)

DEFICIENCIESINVOLVEINGPROCUREMENT(CATEGORY-B)

MPPGCLprotectionauditstatus

Page10of10


ANNEXURE-II

S.NONAMEOFS/sIDENTIFIEDFORPROTECTIONAUDIT

OBSERVATIONSOFPROTECTIONAUDIT(DATEATWHICHPROTECTIONAUDITCONDUCTEDi.e22/04/13&23/04/14.)

PRESENTSTATUS


IFNOTATTEND,REASON YES/NO

WHETHERATTENDEDYES/NO


1 GANDHISAGARHPSCarrierSystemisuseforcommunicationonly,nocarrier

protectionisprovided.NA

2 GANDHISAGARHPS

Positivesideof220VDCsources-1isfoundearthed(VoltagebetweenpositivetoearthisZeroandnegativetoearthis240V)PointatwhichDCleakage/earthlinghavedevelopedmaybe

detectedandrectifiedattheeariliest.

YES YES COMPLETED

3 GANDHISAGARHPS220VBatterycharger-2andBatteryset-2isveryoldand

underreplacement.YES YES COMPLETED

4 GANDHISAGARHPS Synchronizingtrolleyisavailableandworkingproperly. YES YES COMPLETED

5 GANDHISAGARHPS CTsstarpointearthlingof132KVarecheckedandfoundnomultipleearthlingsinthesystem.

YES YES COMPLETED

6 GANDHISAGARHPSHeightofLiveconductorinHVsectionfromCBtowavetrapin132KVManasabayisseamstobeveryless.SufficientGround

clearancemaybemaintainedforsafetypurpose.YES YES COMPLETED

7 GANDHISAGARHPSOperationofDGsetisavailableinmanualmode.ProvisionforautomodeoperationmaybeprovidedsothatDGsetstarts

automaticallyinblack-cutcondition/exigency.YES NO DEC'16 NITWLLBEISSUEDSHORTLY

8 GANDHISAGARHPS AutoChecksynchronizingfacilityisnotavailable,whichshouldbeprovidedforbettermentofsystem.

YES NO DEC'16BUDGETARYOFFERISBEING

OBTAINED.

9 GANDHISAGARHPS TestingofDPR,DifferentialandotherRelays.AlongwithcorrespondingCT&PTshouldbecarriedoutinregularinterval.

YESPARTIALLYATTENDED

MAR'16REQUESTEDHASBEENSENTTO

CENTRALTESTINGTEAMJABALPURFORTESTING

10 GANDHISAGARHPS DRs,SERsarenotavailableforrecordingofsystemdisturbances.

YES NO DEC'16 UNDERTECHNICALEVALUATION.

11 GANDHISAGARHPS BackupO/c-E/FrelaysarenotprovidedforallGeneratorTransformer.Itshouldbeprovidedattheearliest.


12 GANDHISAGARHPS

AlmostalltherelaysprovidedforGenerator,GeneratorTransformer(GT),StationTransformerof20MVAare

electromagnetictype.Theseexistingrelayshouldbereplacedwithnumericalrelaysforbetterreliability,sensitivity,faster

responseandcompatibilitywithGPSsystem.

YES NO DEC'16BUDGETARYOFFERISBEING

OBTAINED.

13 GANDHISAGARHPS

Almostallrelays(Distanceprotection,O/c,E/Frelays)providedfor132KVFeedersareelectromagnetictypeandrequiredtobereplacedbynumericalrelayforbetterreliability,sensitivity,

fasterresponseandcomptibilitywithGPSsystem.


FORMATFORPROTECTIONAUDITDEFICIENCIES/OBSERVATIONSCOMPLIANCENAMEOFUTILITY:MPPGCL

DEFICIENCIESTHATCANBECORRECTEDWITHOUTPROCUREMENT(CATEGORY-A)

DEFICIENCIESINVOLVEINGPROCUREMENT(CATEGORY-B)

/10


ANNEXURE-I

Sl. No.

Name of Sub-Station identified for Protection Audit

S/S Voltage kV Observation of Protection Audit PRESENT STATUS


IFNOTATTEND,REASON



1 ATPS#5 220Hathway make GPS time synchronising system is provided but connected on 220 KV Birsinghpur-3 & Sidhi feeders only, all other relays of feeders & transformers are to be connected.

YES YES COMPLETED

2 ATPS#5 220 REF protection not provided on 220/132 kv ICTs, it is suggested to provide the same.

NOT REQUIRED; DUE TO SHIFTING OF 132 KV SWITCYARD

3 ATPS#5 220 220 kv static Bus Bar Protection scheme make ABB, type RADSS is available at site since 2000, but awaited for commissioning. YES YES

4 ATPS#5 220 LBB Protection is not provided for any element and it is suggested to take in service at earliest YES YES

5 ATPS#5 220ASEA make 132 kv MOCBs are in service,which is very old and inaquate as per the increased fault MVA of the site.It is suggested to replace same

NOT REQUIRED; DUE TO SHIFTING OF 132 KV SWITCYARD

6 ATPS#5 220

Auto Reclosure feature is provided for 220 KV Birshingpur - 3, Jabalpur I & II and Sidhi feeders only. For other 220 KV feeders Auto Reclose facility is available but not be commissioned due to non availability of PLCC protection couplers.

YES NO MAR'16DELAY IN COMPLETION DUE TO NON-AVALIABILTY OF PLCC PANELS FROM MPPTCL FOR OTHER END

7 ATPS#5 220One set of 600 AH battery set is provided for switch yard, which is very old and in poor condition its need early replacement.Battery Capacity test could not be done due to some opertional problem.

YES NO MAR'16 PROCUREMENT OF BATTERY IS IN UNDER PROCESS.

8 ATPS#5 220

A stand by DC supply is available at switchyard to power plant,DC load of 220 kv panels are running on this supply.It is recommended by committee to provide separate DC supply arrangement for power plant and switchyard.

YES NO MAR'16 PROCUREMENT IS IN UNDER PROCESS

9 SGTPS 1 TO 4 220 Partial DC leakage observed, it is advised to recify the same. YES YES COMPLETED

10 SGTPS 1 TO 4 220 220 KV Bus Bar Protection is available but not in service due to some problems YES NO MAR'16

11 SGTPS 1 TO 4 220 LBB Protection relay are available but protection are not provided for any element and it is suggested to put the same in service. YES NO MAR'16

Deficiencies that can be corrected without procurement (Category-A)


BUS BAR PROTECTION SCHEME AND LBB PROTECTION HAS BEEN COMMISSIONIED ON DATED 08/10/2015 AND UNDER OBSERVATION.(COMPLETED).

ORDER FOR NUMERICAL BUS BAR PROTECTION SCHEME WITH LBB

PROTECTION WAS PLACED ON M/s GE INDIA PVT.LTD. BANGALORE AND SCHEME WILL BE COMMISSIONED

SUBJECT TO AVAILABILITY OF SHUNT DOWN OF BAY NO.24 STATION

TRANSFORMER 5A .

/10


ANNEXURE-I

Sl. No.


S/S Voltage kV Observation of Protection Audit PRESENT STATUSDeficiencies that can be corrected without

procurement (Category-A)Deficiencies involving procurement

(Category-B)

12 SGTPS 1 TO 4 220 SER/DR is not installed but it available in numerical relays provided in 220 kv pali interconnector-I and 220 kv Sukha feeders only. YES YES

SER/DR FACILITY IS AVAILABLE IN EASUN REYROLLE MAKE CSC-101 DPR RELAY INSTALLED AT 220 KV OUTGOINING FEEDERS.

13 SGTPS 1 TO 4 220Auto reclose facility not provided on any 220 kV feeders. It is intimated that protection couplers are not available and it is suggested to provide the same.

YES NO OCT'16

CGL MAKE PLCC PANEL DRAWING APPROVED ON DATED 11.01.2016 AND MATERIAL WILL BE SUPPIED WITHIN 2-3 MONTHS.WORK LIKELY TO BE COMPLETED UPTO OCT-2016.

14 SGTPS 1 TO 4 220 GPS based time synchronisation facility is not available. It is suggested to provide the same. YES NO OCT'16 PROCUREMENT UNDER PROGRESS.

15 SGTPS 1 TO 4 220A separate source for 220 kV dc supply is provided for electrical control room and 220 kv switchyard. This battery set is very old, commissioned 1991 needs replacement.

YES NO OCT'16 TENDERING FOR PROCUREMENT IS UNDER PROCESS.

16 SGTPS 1 TO 4 220 Emulsifier system is provided on GT and UAT for Fire protection. Same is operate manually. YES NO OCT'16

SYSTEM IS WORKING IN MANUAL MODE AND BUDGETARY OFFER FOR NITROGEN BASED FIRE PROTECTION SYSTEM ARE OBTAINED AND SAME WILL PROCURE AFTER TECHNICAL AND ADMISTRATIVE APPROVAL.

17 SGTPS # 5 400Static Bus Bar Protection scheme is provided on 400 kV bus make ABB Type-RADHA. A numerical Bus-Bar protection scheme may be provided as suggested by the committee.

YES NO FEB'16

PROCUREMENT FOR NUMERICAL BUS BAR PROTECTION SCHEME IS UNDER PROCESS AND ITS ORDER IS EXPECTED TO BE PLACED IN FEB-2016.

18 SGTPS # 5 400DG set available in power plant and it is suggested by the committee to extend AC supply as stand by to 400 kV control room and switchyard in case of emergency.

YES NO MAR'16 CABLE WORK UNDER PROGRESS FROM ACDB SWITCHYARD TO DG SET.

19 SGTPS # 5 400 Spare unit of single phase ICT is not ready to use, it should be attented and kept in ready condition in case of emergency. YES YES COMPLETED

20 SGTPS # 5 400 High voltage problem are reported and it is suggested to provide bus reactor or line reactor on 400 kv BRS-Damoh line I & II at BRS end.

NOT POSSIBLE AS AVALIABILE SPACE HAS ALREADY BEEN UTILISED BY M/s PGCIL.

21 SGTPS # 5 400 400 KV BRS - BAlCO and BRS-Vandana Power (KORBA) bays belongs to PGCIL UNDER SCOPE OF M/s PGCIL.

22 STPS PH-I 220 No GPS in control room and it is necessary for the root cause analysis of the disturbance occurred in the grid

23 STPS PH-I 220In the protection scheme electromechnical and static relay are in use but as per present grid norms avaliabilty of numerical relay is required for fault analysis and event recorder.

NOT APPLICABLE BECAUSE ALL 5 UNITS OF PH-I HAS ALREADY RETIRED.

/10


ANNEXURE-I

Sl. No.




(Category-B)

24 STPS PH-I 220 Fire protection system of transformers are out of order and suitability of nitrogen injection fire protection system may be explored.

25 STPS PH-II 220 Scaling is observed on the terminal of some of the batteries. YES YES COMPLETED

26 STPS PH-II 220 L&T make switchgear indicating lamp assembly is missing and they are vacant i.e whole are uncovered. YES YES COMPLETED

27 STPS PH-II 220 No GPS in control room and it is necessary for the root cause analysis of the disturbance occurred in the grid YES NO DEC'16 PROCUREMENT UNDER PROGRESS.

28 STPS PH-II 220Some of the cells of unit no.7 are bulged in plante type battery set which resulting in breaking of the container and lid therfore it should be replaced at the earliest.

YES YES COMPLETED

29 STPS PH-II 220 Some of the cell are bypassed due to bulging problem thereby reducing the available capacity of the bank. YES YES COMPLETED

30 STPS PH-II 220

Battery bank of unit 6& 7 were commissioned in the year 2004 & 2001 respectively.As per CEA circular fair life of battery is 5 years only therefore suitable action for their replacement is to be initiated at the earliest.

YES NO SEPT'16

RECONDITIONING OF UNIT NO.7 BATTERY BANK HAS BEEN CARRIED OUT RECENTLY (i.e APRIL-2015) AND FOR UNIT NO.6 PURCHASE IS IN PROCESS.

31 STPS PH-II 220 No alarm for DC E/F is provided in the chargers. YES YES COMPLETED

32 STPS PH-II 220 Capacity test has not been conducted recommended to do onces in a year. YES YES

CAPACITY TEST HAS BEEN CARRIED OUT ON DTD.11/09/14 OF BATTERY BANK UNIT NO.6 & AFTER REPAIR AND SERVICING WORK OF UNIT NO.7 CAPACITY TEST HAS BEEN CARRIED OUT IN THE MONTH OF APRIL 2015.

33 STPS PH-II 220In the protection scheme electromechnical and static relay are in use but as per present grid norms avaliabilty of numerical relay is required for fault analysis and event recorder.

YES NO DEC'16

GENERATOR PROTECTION NUMERICAL RELAY HAS BEEN INSTALLED IN UNIT NO.7.THE NUMERICAL RELAY FOR UNIT NO.6 WILL BE COMMISSIONED IN NEXT OVERHAULING.

34 STPS PH-II 220 Pole slip protection is not available so it shall be provided. YES NO NOT APPLICABLE

NOT APPLICABLE BECAUSE ALL 5 UNITS OF PH-I HAS ALREADY RETIRED.

/10


ANNEXURE-I

Sl. No.




(Category-B)

35 STPS PH-II 220 Auto reclosure/Disturbance Recorder/Event Logger/SER all are not available. YES NO DEC'16

NUMERICAL RELAY HAS BEEN COMMISSIONED IN DPR WHICH CONTAIN ALL THE MENTIONED FEATURES,BUT CARRIER SCHEME IS NOT AVAILABLE THEREFORE AUTO RECLOSING FEATURE COULD NOT BE ESTABLISHED.FOR THIS CARRIER PROTECTION PANELREQUIRED THEREFORE ESTIMATE HAS BEEN SUBMITTED FOR APPROVAL.

36 STPS PH-II 220 Carrier Protection is not available in 220 kV switchyard. YES NO DEC'16CARRIER PROTECTION PANEL REQUIRED THEREFORE ESTIMATE HAS BEEN SUBMITTED FOR APPROVAL.

37 STPS PH-II 220 Earth Mettaling is not visible in 220 kV switchyard YES NO AUG'16 CASE IS IN UNDER PROCESS.

38 STPS PH-II 220 Mulsi Fire protection of the transformer is out of order, suitability of Nitrogen injection may be explored YES NO APRIL'16

THE WORK OF PROVIDING FIRE HYDRANT IS IN PROGRESS BY MECHANICAL DEPARTMENT.

39 STPS PH-II 220Suitability of short circuit breaking capacity of circuit bkr & short time current capacity of CT's shall be reviewed in respect of exsisting fault level's

YES NODUE TO DISCONTINUATION OF 312.5 MW OF PH-I,FAULT LEVEL HAS GOT REDUCED CONSIDERABLY.

40 STPS PH-III 400220v dc battery source - no alarm for dc e/f is provided in the chargers. YES YES COMPLETED

41 STPS PH-III 400 220v dc battery source - capacity test has been conducted in the year 2011. recommended to do the capacity test once in a year. YES YES COMPLETED

42 STPS PH-III 400220 V DC battery source - records indicated the voltage measurement of individual cells with the charger on condition. This readings are to be taken with charger off condition also.

YES YES COMPLETED

43 STPS PH-III 400220 V DC battery source - Scaling is observed on the terminals of some of the batteries. Also the general cleanliness of the batteries and battery room need improvement.

YES YES COMPLETED

44 STPS PH-III 400 ISP Feeder - Over voltage stage i and stage ii protection has been provided through separate rxeg-21 relays. YES YES COMPLETED

45 STPS PH-III 400 ISP Feeder - over voltage stage ii setting has been adopted as 130% . this should be reviewed. YES YES COMPLETED

46 STPS PH-III 400 No gps in 400kv control room . YES NO JUNE'16 TENDER OPENED AND CASE IS UNDER PROCESS.

47 STPS PH-III 400

220 V DC battery source - 216 V Dc battery source of unit# 8 of 1200ah capacity - It was commissioned in the year 2004. As per cea circular the revised fair life is 5 years only. Suitable action for their replacement is to be initiated at the earliest.

YES YES ACCORDING TO CE(Engg.) JABALPUR AS PER IEEE 450-1987,THE RECOMMEND PRACTICE TO REPLACE BATTERY IS

BASED ON C-10 TEST AND NOT A TIME BOUND AND C-10 TEST FOUND

SATISFACTORILY IN AUG-13 & THE SAME WILL BE PERIODICALLY REPEATED IN

AOH.

/10


ANNEXURE-I

Sl. No.




(Category-B)

48 STPS PH-III 400

220 V Dc battery source - 216 V DC battery source of unit# 9 of 1200ah capacity - It was commissioned in the year 2004. As per cea circular the revised fair life is 5 years only. Suitable action for their replacement is to be initiated at the earliest.

YES YES

49 STPS PH-III 400220 V DC battery source - 216 V DC battery source for station of 1200ah capacity - It was commissioned in the year 2009. As per cea circular the revised fair life in 5 years only.

YES YES ITS C-10 TEST DONE AND RESULT FOUND SATISFACTORY.

50 STPS PH-III 400 ISP Feeder - Reverse zone is not provided is rel 521 relay. The zone calculations may be revised. YES NO JUNE'16

REVERSE ZONE WILL BE PROVIDED IN THE NEW NUMERICAL RELAY WHICH IS PROCURED FOR MAIN 2 PROTECTION .PURCHASE OF RELAY FOR MAIN-II IS IN TENDERING STAGE.HOWEVER PROPOSAL FOR CALLING SERVICE ENGINEER FOR REL 521 IS IN PROCESS.

51 STPS PH-III 400 ISP Feeder - Over voltage protection has not been enabled in rel521 numerical relay. YES YES

.OVERVOLTAGE SEETING STAGE-1 & STAGE-II HAVE BEEN PROVIDED THROUGH SEPARATE RXEG-21

52 STPS PH-III 400 Reactor - 63 MVARs bus reactor no. 1 is out since 24.05.2005. YES YES

53 STPS PH-III 400 Reactor - new reactor is available. it should be commissioned early. YES YES

54 STPS PH-III 400 Fire protection of transformer - mulsifire type fire protection system is out of order. YES NO

TRAIL OF MULSIFIRE D,G SET TAKEN SUCCESSFULLY.HWEVER POSSIBILITY OF NITROGEN FIRE PROTECTION SYSTEM IS

BEING EXPLORED.

55 STPS PH-III 400 Fire protection of transformer - suitable of nitrogen injection fire protection system may be explored. YES NO DEC'16 WAITING FOR RECEIPT OF OFFER

56 SSTPP 400

Carrier protection is enabled for 400 & 220 KV lines.A/R is enabled dead time and reclaim time are taken as 700 ms & 15msec respectively.The same mar be reviewed as per CBIP guideline.According to which setting are to be 1 sec & 25 sec respectively.

YES NO MAR'16

DUE TO PROBLEM OF NON ACCEPTANCE OF CHANGES IN SCADA SOFTWARE.MATTER IS TAKEN WITH M/s ALSTOM AND ITS RESPONSE AWAITED.

57 SSTPP 400

Same over voltage stage-I setting is adopted for all 400 KV line.As per CBIP guide line clause no.4.3.1 of manual no.274.A time discrimination of 1sec is to be provide between relays of different lines at an ststion.The matter mat be reviewed.

YES NO MAR'16

Matter was discussed with protection committee member shri.Yadav (EE) and it was observed that presently no need to implement in generating station and applicable to distribution switchyard for saving transformer feeder tripping at a time.

BUS REACTOR-I SUCCESSFULLY CHARGED ON 29/12/2012.

ACCORDING TO CE(Engg.) JABALPUR AS PER IEEE 450-1987,THE RECOMMEND PRACTICE TO REPLACE BATTERY IS

BASED ON C-10 TEST AND NOT A TIME BOUND AND C-10 TEST FOUND

SATISFACTORILY IN AUG-13 & THE SAME WILL BE PERIODICALLY REPEATED IN

AOH.

/10


ANNEXURE-I

Sl. No.




(Category-B)

58 SSTPP 400Over voltage stage-II setting for 400 KV line is adopted as pick up 140% time 1 sec.As per CBIP guide lines the setting is to be taken as 150% & 0.1 sec.The setting may be reviewed.

YES YES SETTING ARE CHANGED AND PRESENTLY EFFECTIVE.

59 SSTPP 400

Zone 3 setting for 400 KV SSTPP-Pithampur circuit 1&2 is based on 100% of main line plus 100% of 400 KV Pithampur-PGCIL indore line setting may be reviewed by considering another circuit of SSTPP-Pithsmpur as longest line.

YES NO MAR'16 RESPONSE AWAITED FROM SE(T&C) MPPTCL KHANDWA

60 SSTPP 200

Zone 3 setting for 200 KV SSTPP-Chhegaon line is based on 100% of main line plus 100% of 220KV chhegaon-nimrani line It is reaching to next voltage line at chhegaon line. setting may be revied to restrict the reach.

YES NO MAR'16 RESPONSE AWAITED FROM SE(T&C) MPPTCL KHANDWA

61 TONS HPS 220 PLCC ROOM - Dead Rodents odor was felt. YES YES COMPLETED

62 TONS HPS 220220 KV Feeders - TMS of directional E/F is 0.1 second. It appears very low and to be reviewed in reference to fault MVA of Tons HPS. YES YES COMPLETED

63 TONS HPS 220

220 KV Feeders - Female contact of R & Y phases of bus-2 isolator of 220 KV Rewa feeder-2 is not available. Hence, it is not possible to put on this bus in case of any eventuality. YES YES COMPLETED

64 TONS HPS 220 RELAYS - Zone 3 time setting of 220 KV feeders is 600 mili seconds and it may be 700 milli seconds as per new instruction. YES YES COMPLETED

65 TONS HPS 220 DG Set – Over current protection is out of service. YES NO DEC'16 TENDER OPENED AND CASE IS UNDER PROCESS.

66 TONS HPS 220 48 Volt DC System - Battery set is placed on the floor without putting insulator. YES NO MAR'16 PROCUREMENT OF BATTERY SET SHALL

BE DONE UPTO 2015-16 .

67 TONS HPS 220

PLCC ROOM - No PLCC cabinets for Rewa – 1, Rewa - 2 & Kotar directions. YES NO MAR'16

68 TONS HPS 220

Communication - Communication to 220 KV Kotar s/s is not available YES NO MAR'16

PROCUREMENT OF MATERIAL INITIATED

/10


ANNEXURE-I

Sl. No.




(Category-B)

69 TONS HPS 220Communication - Communication to 220 KV Rewa s/s is not available YES NO MAR'16

70 TONS HPS 220

Communication - Mode of communication with SLDC is very poor which may be improved by providing Landline phone in control room or by other suitable means. PLCC communication to Jabalpur is having much hauling.

YES NO MAR'16

71 TONS HPS 220 RTU - Active power transducer of 220 KV Rewa feeder-2 is found out. YES YES COMPLETED

72 TONS HPS 220 RTU - Alternate data channel to SLDC is not available. YES NO MAR'16 PROCUREMENT OF MATERIAL INITIATED

73 TONS HPS 220220 KV Feeders - Carrier Protection & Auto re-closure feature has not been commissioned YES NO MAR'16 TENDER OPENED AND CASE IS UNDER

PROCESS.

74 TONS HPS 220220 KV Feeders - 220 KV feeders’ isolators with earth switch are not in working order. YES NO OCT'16 MATERIAL RECEVIED AT SITE AND WORK

COMPLETED IN UPCOMING AOH.

75 TONS HPS 220 Transformer - MOLG of all the GTs are not working. YES NO OCT'16 RECIFIED IN UPCOMING AOH

76 TONS HPS 220 Station Transformer - 33 KV lightening arrestor found disconnected. YES NO MAR'16 RECIFIED IN UPCOMING AOH

77 TONS HPS 220Generator Transformer - No mechanical tripping on existing 220 KV Gas Circuit Breaker of generator transformer and it is Single Pole Mechnism, it shall be Gang operated circuit breaker.

YES NO MAR'16 PROCUREMENT OF MATERIAL INITIATED

78 TONS HPS 220 Fire Protection – Generator fire protection is not in working order. YES NO MAR'16 ORDER PLACED TO FIRM AND WORK SHALL BE COMPLETED SHORTLY.

79 TONS HPS 220 Governor - Unit 1 & 2 are on manual mode of governor operation. YES YES COMPLETED

PROCUREMENT OF MATERIAL INITIATED

/10


ANNEXURE-I

Sl. No.




(Category-B)

80 TONS HPS 220RELAYS - Generator Protection & transformer protection is provided through electromechanical relays. It is to be provided with numeric relays.

YES NO DEC'16 TENDER OPENED AND CASE IS UNDER PROCESS.

81 TONS HPS 220 RELAYS - The existing bus bar protection is un-commissioned and obsolete. It is to be provided through Numeric relays. YES YES

82 TONS HPS 220 RELAYS - LBB protection is not commissioned on 220 KV feeders. YES YES

83 TONS HPS 220 RELAYS - Carrier protection is not available on all 220 KV feeders. YES NO DEC'16 TENDER OPENED AND CASE IS UNDER PROCESS.

84 TONS HPS 220RELAYS - 220 KV Bus coupler earth fault relay is out of order

YES NO DEC'16 TENDER OPENED AND CASE IS UNDER PROCESS.

85 TONS HPS 220RELAYS - Some of the protection/ auxiliary relays are not having cover to prevent from dust, moisture and water etc. YES YES COMPLETED

86 TONS HPS 220 Earth Resistance – Earth Resistance record has not produced for 220/33 KV switch yard & electronic earthing of DAVR. YES NO OCT'16 DONE IN UPCOMING AOH

87 TONS HPS 220 GPS Time Synchronizer was not available. YES NO DEC'16

88 TONS HPS 220 Sequence Event Recorder was not available. YES NO DEC'16

89 TONS HPS 220 Disturbance Recorder was not available YES NO DEC'16

90 TONS HPS 220 Diagnostic Station was not available. YES NO DEC'16

91 TONS HPS 220 The condition of emergency lighting at various floors and control locations is poor. YES YES COMPLETED

COMPLETED

TENDER OPENED AND CASE IS UNDER PROCESS.

of38

Annx-I

State:- Madhya Pradesh

ENTITY - MPPTCLQuarterly Report for the period of October 2015 -December 2015

Yes/NoWetherattendedYes/No

ifnotattendedreason

Yes/NoWetherattended

Yes/Noifno,expecteddateto

attend

1. Time synchronisation problem of protective relays with GPS.

Yes Yes - Yes No -2 nos ABB make relays have to be equiiped with IRIG-B port

2. Providing of Separate Event Logger

No Yes* - Yes No*As event logging facility provided in all DPR's& Differential relays it is not required

3. Providing of adequate fire protection system.No Yes - No No

Nitrogen injection fire protection system provided in all three Transformers.

4. Replacement of 220KV Static Bus Bar system with Numeric

No No - Yes Yes - Completed

5. Providing of additional Backup element on 315MVA Transformer -III

No No - Yes Yes - Completed

1. Replacement of 1No 132KV NGEF SF6 CB of BHEL Bay

Yes No - Yes Yes - Completed

2. Replacement of Electromechanical O/C & E/F relays of Incomers with numerical relays.

No No - Yes No -3 nos Numerical O/c + E/f relays required

3. Provision for taking REF protection in Circuit on 160MVA, 3x40MVA and 100MVA Transformers

Yes Yes - Yes No -

REF is enabled on 160 MVA CGL Xmer and 100 MVA XmerFor 160 MVA BHEL Xmer, NCT is required.For 3X40 MVA Xmer, NCT and structure is required.

4. Providing of Additional wave trap on 220KV Inter Connector-II

No No - Yes Yes - -

NameofUtility-MADHYAPRADESHPOWERTRANSMISSIONCO.LTD.JABALPUR

Sl.No.

NameofSub-Stationidentifiedfor

ProtectionAudit

S/SVoltage

NameofProtectionAuditAgency

DateofwhichAudit

ConductedObservationofProtectionAudit

Deficienciesthatcanbecorrectedwithoutprocurement

(Category-A)

Deficienciesinvolvingprocurement(Category-B)

Remark

1 400KV S/SBhopal

400KV

Internal Protection Audit party

compirising of representatives of State Utility and

Power Grid

17-01-13 to 18-01-13

2220KV S/S

Bhopal220KV

Internal Protection Audit party

compirising of representatives of State Utility and

Power Grid

22-04-13 to 23-04-13

of38

Annx-I




ifnotattendedreason



attend


Sl.No.


ProtectionAudit

S/SVoltage


DateofwhichAudit



(Category-A)


Remark

1.LBBschemetobetakeninserviceYes Yes - No No - Completed

2.Providingof220KVBusBarProtectionSchemeYes No - Yes Yes - Completed

3.LAsleakageCurrentmeasurementtobedoneYes Yes - No No - Completed

1.ReplacementofStatic/ElectromechanicalDPRbyNumericalrelays

Yes Yes - No No -

2Commissioningofnew600AH48VBatteryCharger Yes Yes - No No -3SynchronisationofGPSsystemwithprotectionof132KVTraction-I&IIfeeders

Yes Yes - No No -

3 220KVS/SMandideep

220KV

InternalProtectionAuditpartycompirisingofrepresentativesofStateUtilityandPower

Grid

26-04-13to27-04-13

4 220KVS/SMandideep

220KV


Grid

07-05-13to08-05-13

of38

Annx-I




ifnotattendedreason



attend


Sl.No.


ProtectionAudit

S/SVoltage


DateofwhichAudit



(Category-A)


Remark

1.33KV,25MVArreactorof315MVATr-ItobetakenbackinservicebyreplacementofRphase33KVBushingandrepairof33KVCB. YES Yes - YES YES - -

2OilleakagefromBphaseTurretof400KVBushingof315MVANo-I

Yes Yes - No No -ATTENDEDINTHEMONTHOFJUNE2013

3.33KV,25MVArreactorof315MVATr-IItobetakenbackinservicebyreplacementofRphase33KVBushingandrepairof33KVCB.

Yes YES - No No -

AFTERREPLACEMENTOFR-PHASEBUSHINGandrepairof33KVCB.REACTORHASALREADYBEENTAKENINSERVICE

4.Mixingof220VDCsource-I&IItoberectified Yes Yes - No No - DCSOURCESEPARATED5.ReplacementofBphaseCVTof400KVMainBus-II Yes Yes - No No -

REPLACEMENTDONEINTHEMONTHOFMARCH2013

6.AutoChecksynchronisingfacilityisnotinservice

No NO - No No -

SYN.TROLLYISAVAILABLEANDITWILLBETAKENINSERVICEAFTERCHECKINGTHEHEALTHINESSOFTHERELAYANDITSWIRING

7.ExtendingGPSconnectivitytobalanceDPRsandDifferentialrelays

Yes Yes - No No - -

8.ProvidingofSeparateEventLogger Yes No - YES YES - EventloggingfacilitycommissionedinSCADA

9.Connecting220KVBusBarPanelfortripping Yes Yes - No No - TRIPPINGCONNECTED(28MAY2013)10TestingofDPRof220KVInterconnector-II Yes Yes - No No - TESTED

5 400KVS/SBina 400KV


Grid

12-02-13to13-02-13

of38

Annx-I




ifnotattendedreason



attend


Sl.No.


ProtectionAudit

S/SVoltage


DateofwhichAudit



(Category-A)


Remark

1ProvidingofEmergencylightinControlandBatteryRoom No Yes - No No -

2ProvidingGPSconnectivityin400KVControlpanels Yes Yes - No No -3.DGsetnotprovided Yes No - YES YES - DGSETAREINPROCESSOFDELIVERYON

RECEIPTWILLBECOMMISSIONEDSHORTLY4.400KVBusBarprotectionoutofservice Yes Yes - No No -5HighresistanceofEarthpitof220KVPGCIL-IIbay Yes Yes - No No -6.220KVsideLBBtobecommissioned Yes Yes - No No -7DirectionalE/Ffeaturetobeenabledon220KVBirsinghpurandDamohfeeder.

Yes Yes - No No -

8.REFprotectionon160MVATELKTr.Tobeenabled Yes Yes - No No -

1.Zone-IIIsettingof220KVGwalior-Bina-I&IItobereviewed No Yes - No No -

2ExtendingGPStimesynchrinisingfacilitytoallpanelsNo Yes - No No -

3220KVBusBarschemetobeprovidedNo No - YES YES -

NewNumericschemecommissionedinplaceofoldstaticscheme

4.ProvidingofNIFPSon3x40MVA220/132KVTransformer

Yes No - YES NO -Matterisunderconsideration,howeverforsinglephaseunitsschemeisnotfeasible.

5.ProvidingofDGsetYes No - YES NO DGSETAREINPROCESSOFDELIVERYON

RECEIPTWILLBECOMMISSIONEDSHORTLY

6 400KVS/SKatni 400KV


Grid

17-01-13to18-01-13

7 220KVS/SGwalior 220KV


Grid

27-04-13to28-04-13

of38

Annx-I




ifnotattendedreason



attend


Sl.No.


ProtectionAudit

S/SVoltage


DateofwhichAudit



(Category-A)


Remark

1.Relaysettingof132KVMalanpur-Banmore-Ifeedertobereviewed

No Yes - No No -

2.Zone-IIIsettingof220KVMalanpur-Auraiyafeedertobereviewed

Yes Yes - No No -

3.ProvidingofDGset

Yes No - YES NODGSETAREINPROCESSOFDELIVERYONRECEIPTWILLBECOMMISSIONEDSHORTLY

4.DCleakagein110VDCsystemtoberemoved No Yes - No No -5.GPStimesynchronisingtobeextendedtoTransformerpanels

Yes Yes - No No -

6.ProvidingofNIFPSon160MVA220/132KVTransformer-II Yes No - YES NO - Procurementapprovalisinprocess7.220KVBusBarprotectiontobetakenintocircuitfortripping

Yes Yes - No No -

8Earthresistanceof20and40MVAtransformerpitsarenottaken

Yes Yes - No No -

1.SSRR3Vschemeon132KVBhindfeedertobereplaced No No - Yes Yes -2.220KVand132KVfeederDPRsZone-II&IIIsettingstobereviewed

Yes Yes - No No -

3.DCleakagein110VDCsystemtoberemoved Yes Yes - No No -4.GPStimesynchronisingfacilitytobeextendedto132KVBhind,Seondhafeederand160MVABBLTransformerpanels

Yes Yes - No No -

5.ProvidingofNIFPSon160MVA220/132KVTransformer-II No No - YES NO - Procurementapprovalisinprocess6.220KVBusBarprotectionschemetobetakenintocircuitafterconfigurationofnew160MVABBLtransformer

Yes Yes - No No -

8 220KVS/SMalanpur 220KV


Grid

01-05-13to02-05-13

9 220KVS/SMehgaon 220KV


Grid

29-04-13to30-04-13

of38

Annx-I




ifnotattendedreason



attend


Sl.No.


ProtectionAudit

S/SVoltage


DateofwhichAudit



(Category-A)


Remark

1.220KVBusBarschemetobeprovided No No - Yes Yes - comissionedondt.09/02/152.160MVATransformerI&IIpanelsaresynchronisedwithGPSsystem,otherpanelsneedstobesynchronised

Yes Yes - No No - --

3.Oiltemp.indicatorisnotavailablein20MVATransformer Yes Yes - No No - --4Earthresistancemeaurementtobedone Yes Yes -- No No - --5.Zone-II&IIIsettingsofDPRsof220KVPGCIL,132KVArniyafeederstobechecked

Yes Yes -- No No - --

1.CTjunctionBoxearthingin132KVBaystobestrengthen Yes Yes -- No No -2.220KVand132KVCBMarshallingBoxearthingtobecheckedandstrengthen

Yes Yes -- No No -

3IOCfeatureinDifferentialandDPRrelaystobeenabledfromreliabilitypointofview

Yes Yes -- No No -

4.OverfluxingalarmandTriptimesettingsmaybeverifiedandcorrected

Yes Yes -- No No -

1.AREVAmake220KVCBmarshallingBoxesarenotproperlyearthed

Yes Yes -- No No -

2.MinorDCleakagefoundin110VDCsource-II Yes Yes -- No No -3.FivenosDPRs(220KVHandiya-I&II,Barwaha,Sarni-IiiandTransferB/C)arenottimesynchronisedwithGPS

Yes Yes -- No No -

4.Autoreclosedfeatureistobemadeoperational Yes Yes -- No No -5.LBBandBusBarprotectionschemehavetobetakenintocircuit

Yes Yes -- No No -

6.H.SetfeatureofDifferentialrelaystobeenabled Yes Yes -- No No -

10 220KVS/SShujalpur 220KV


Grid

24-04-13to25-04-13

11 220KVS/SHoshangabad

220KV


Grid

08-05-13to09-05-13

12 220KVS/SItarsi 220KV


Grid

06-05-13to07-05-13

of38

Annx-I




ifnotattendedreason



attend


Sl.No.


ProtectionAudit

S/SVoltage


DateofwhichAudit



(Category-A)


Remark

1.GPSisinstalledbutnotfunctioning,tobetakenintoservice

No No -- YES No - Procurementinvolved

2.220KVBusBarprotectionschemeisASEAmakeneedstobereplacedwithnumericalscheme

No No -- YES YES -NewGEmakeBBschemecommissioned(dateofservice15.09.2014)

3.ProvidingofDGset No No -- YES NO -DGSETAREINPROCESSOFDELIVERYONRECEIPTWILLBECOMMISSIONEDSHORTLY

4NumericDPRon220KVJetpurafeedertobeprovided Yes Yes -- No No -5DTOCsettingofTransformersmaybereviewedwithlatestfaultlevelandCTratio

Yes Yes -- No No -

1.GPSisinstalledbutintermittentoutageofGPShasbeenreported,needstobediscussedwithmanufacturer

Yes Yes -- No No -

2.Uniformityinsettingdsofboth160MVAtransformersmaybereviewed

Yes Yes -- No No -

3.Rajgarh-IIDPRrelaysettingtobereviewedforPhase/GroundImpedanceforZone-III

Yes Yes -- No No -

4.ProvidingofDGset Yes No - YES NO -DGSETAREINPROCESSOFDELIVERYONRECEIPTWILLBECOMMISSIONEDSHORTLY

5V/FprotectioninanyofDifferentialrelayon132/33KVTransformersnotenabled

Yes Yes - No No -

1.SomenumericalrelaysarenottimesynchronisedwithGPS

Yes Yes - No No -

2.220KVBusBarprotectionschemeisASEAmakeneedstobereplacedwithnumericalscheme

No No - YES YES -

3.V/Fsettingfor3x40MVA,63MVA,40MVAisnotenabled Yes Yes - No No -4.REFisnotenabledin220KVand132KVTransformers,tobeenabled

Yes Yes - No No -

5LBBprotectionfor220KVClassTransformerstobecommissioned

Yes Yes - No No -

6.ProvidingofDGset Yes No - YES NO -DGSETAREINPROCESSOFDELIVERYONRECEIPTWILLBECOMMISSIONEDSHORTLY

13 220KVS/SSouthZoneIndore

220KV


Grid

22-04-13to23-04-13

14 220KVS/SPithampur

220KV


Grid

24-04-13to25-04-13

15 2220KVS/SBarwaha 220KV


Grid

26-04-13to27-04-13

of38

Annx-I




ifnotattendedreason



attend


Sl.No.


ProtectionAudit

S/SVoltage


DateofwhichAudit



(Category-A)


Remark

1.GPSsystemforrelaytimesynchrinisationisoutoforder Yes Yes - No No -2.AutomaticFireProtectionSystem(NIFPS)tobeinstalledonallTransformers Yes Yes - No No -

Matterisunderconsideration,howeverforsinglephaseunitsschemeisnotfeasible.

3.Fireextinguishersareavailablebuttobeplacedatappropriatelocationsasperrequirement.

Yes Yes - No No -

4.AirConditioningsystemshouldbeprovidedintheControlRoom

Yes No - YES NO - Matterisunderconsideration.

1BusBarprotectionsystemisprovidedbutisinalarmmodeonly.

Yes Yes - No No -

2.110VDCSystemishavingearthleakageproblem Yes Yes - No No -3.AutomaticFireProtectionSystem(NIFPS)tobeinstalledonallTransformers

Yes No - YES NO - Procurementapprovalisinprocess

4.SynchronisingschememustbeprovidedasmanyHydelGeneratorsareconnectedtothe220KVand132KVBus.

Yes No - YES NO - NITissueed&inprocess

5.LightingVisibilityintheControlRoomshouldbeincreased

Yes Yes - No No -

6.Fireextinguishersareavailablebuttobeplacedatappropriatelocationsasperrequirement.

Yes Yes - No No -

7.REFfeaturein160MVACGLisnotenabled. Yes Yes - No No -8.LoaddroppingschemeonTransformersmustbeconnected.

Yes Yes - No No -

16 220KVS/SJabalpur 220KV


Grid

24-04-13to25-04-13

17 220KVS/SRewa 220KV


Grid

29-04-13to30-04-13

of38

Annx-I




ifnotattendedreason



attend


Sl.No.


ProtectionAudit

S/SVoltage


DateofwhichAudit



(Category-A)


Remark

1.GPSsystemisavailablebuttherelaysarenotconnectedtoit.

Yes Yes - No No - -

2BusBarandLBBprotectionofB-90BusBarprotectionschemeisnotinserviceduetoYphaseCTmoduledefect.

Yes Yes - No No - Putbackinservice

3Earthleakageproblemin110VDCsystemisthere. Yes Yes - No No - -4.REFfeaturein160MVABHELisnotenabled. No No - Yes No - NCTRequired5.AutomaticFireProtectionSystem(NIFPS)tobeinstalledon160MVAAREVATransformer

Yes No - Yes No - Procurementapprovalisinprocess

6.REFprotectionisnotavailableon160MVABHELtransformer

Yes No - Yes No - NCTRequired

1.Oilleakageobservedfrom33KVTertiaryBushingTurretofBHELTransformer

Yes Yes - No No -

2.FireextinguishersarenotavailableatControlRoom Yes Yes - No No -3ProvidingofEmergencylightinControlroom Yes Yes - No No -4Internalpanelcabeling/WiringofControlpanelismeshed

Yes Yes - No No -

1.GPSsystemisnotconnectedwithallrelays No Yes - Yes No -

ABBMAKENUMERICALRELAYDOESNOTHAVEPORTFORSYNCHRONIZATIONWITHGPSSYSTEM.MATTERISDISCUSSEDWITHM/SABB.FORENABLINGFEATUREREQUIREDADDITIONALPORTONCHARGEABLEBASISWHICHISINPROCESS.

2.48VBatteryChargerisworkinginonlyBoostmode. YES Yes - No No - Floatmodeisalsotakeninservice3.AutomaticFireProtectionSystem(NIFPS)tobeinstalledonbothTransformers

Yes No - YES NO - Procurementapprovalisinprocess

4.220KVBusBarschemetobeprovidedYes YES - NO NO

-

18 220KVS/SSatna 220KV


Grid

01-05-13to02-05-13

19 220KVS/SDamoh 220KV


Grid

06-05-13to07-05-13

20 220KVS/SSagar 220KV


Grid

09-05-13to10-05-13

of38

Annx-I




ifnotattendedreason



attend


Sl.No.


ProtectionAudit

S/SVoltage


DateofwhichAudit



(Category-A)


Remark

21 220KVS/SBarod 220KV


Grid

24-04-13to25-04-13

1.GPSsystemisavailablebutsomerelaysarenotconnectedtoit.

Yes Yes - NO NO

-

Allrelaysconnected


Yes Yes - NO NO - Allrelaysconnected

2.220KVBusBarschemetobeprovided NO NO - YES YES - commissioned3V/FprotectioninanyofDifferentialrelayon132/33KVTransformersnotenabled

Yes Yes - NO NO -4DTOCsettingofTransformersmaybereviewedwithlatestfaultlevelandCTratio

Yes Yes - NO NO - corrected

5.Floatmodeof110VDCChargerisdefective Yes Yes - NO NO - Floatmodeisalsotakeninservice6In220KVJulwaniya-Omkareshwar,Zone-IIItimesettingis800ms.Itisnotprogrammableaspushbuttonsarenotworkingandrelaycommunicationsoftwareisnotavailable.Itmayberectifiedsoon.

Yes Yes - NO NO

-

corrected


Yes Yes - No No - Allrelaysconnected

2.220KVBusBarschemetobeprovided No No - YES Yes _ Newschemecommissioned3.Floatmodeof110VDCChargerisdefective Yes Yes - No No - Floatmodeisalsotakeninservice

22 220KVS/SJulwaniya 220KV


Grid

08-05-13to09-05-13

23 220KVS/SNimrani 220KV


06-05-13to07-05-13

of38

Annx-I




ifnotattendedreason



attend


Sl.No.


ProtectionAudit

S/SVoltage


DateofwhichAudit



(Category-A)


Remark

24220KVS/SIndore-II

Jetpura 220KV


Grid

08-05-13to09-05-13

1.TimesynchronisationsystemisavailablewithGPS,Itsconnectivitywasmadewithall220KVDPR/Differentialrelays.AsthishascreatedprobleminfunctioningofDPR/Differentialralays,timesynchronisationsystemisdisconnected.Rectificationoftheproblemandconnectivityoftimesynchronisationsystemwithalltherelaysistobedone.

Yes Yes - No No - Problemrectified&allrelaysconnected.

25 220KVS/SUjjain 220KV


Grid

26-04-13to27-04-13

1.TimesynchronisationsystemisavailablewithGPSsystem,itsconnectivityismadewithfew220KV&132KVrelays,Connectivityfortherestofthesystemistobedone.

Yes Yes - No No - Allrelaysconnected

1.TimesynchronisationsystemisavailablewithGPSsystem,itsconnectivityismadewithall220KV&132KVDPR/Differentialrelays.ItsconnectivitywithBusBarRelayB-90istobedone.

Yes Yes - No No - Done

2.CTsec.coremeantforbackupprotectionisalsousedforBusBarprotectionfornumberof220KVbays.ForBusBarprotectionschemePSclassofCTSeccoreistobeused.

Yes Yes - No No -

26 220KVS/SRatlam 220KV


Grid

06-05-13to07-05-13

of38

Annx-I




ifnotattendedreason



attend


Sl.No.


ProtectionAudit

S/SVoltage


DateofwhichAudit



(Category-A)


Remark

1.220KVDCsystemvoltagehavebeencheckedw.r.t.(+Ve)toearth=136V,(-Ve)toEarth=89V,andtoberectified

Yes Yes - No No - Rectified

2.220VDCSourceI&IImixingpossibilityisthereandtobechecked.

Yes Yes - No No - CheckednoDCsourcemixing

3.Floatchargerof220VsystemisnotworkinginbothchargersandpresentlychargersareworkinginBoostchargingmode.

Yes Yes - No No - Floatmodeismadeoperationalinboththechargers

4.IlluminationinAC/DCroomisverypoorandsametoberectified

Yes Yes - No No -

5.All400KVand220KVlinerelaysarenumericalexceptMain-Irelayof400KVNagda-Indore,whichhasbeeninstalledandhastobeconnected.

Yes Yes - No No - Takeninservice

6.SeparateeventloggerforS/Sisnotavailableandneedstobeprovided.

Yes No - YES Yes - EventloggingfacilitycommissionedinSCADA

7.DirectionalE/Ffeaturesistobeenabledonfollowingfeeders,400KVMain-IIRelay(GED60),400KVISPMain-II(ABBREL521)and400KVRajgarhI&II(AlstommakeEPAC3000relayistobereplacedbySEL311Crelayandfeaturehastobeenabledsoon)

Yes Yes - No No -

8.25MVAr33KVReactorsinstalledonTertiarywindingofICT-IIandICT-IIIreoutofordersincelongtime.


27 400KVS/SNagda 400KV


Grid

17-01-13to18-01-13

of38

Annx-I




ifnotattendedreason



attend


Sl.No.


ProtectionAudit

S/SVoltage


DateofwhichAudit



(Category-A)


Remark

1.TertiaryReactorof315MVATr-I&IIarenotbeingtakeninserviceduetohighTandeltavaluesofBushings,whichshouldbereplacedandreactorsshouldbetakenintoservice.

Yes No - YES NO 30.11.2015UnderProcessHOWEVER315MVATr-IISTAKENOUTOFSERVICEPERMANENTLY.

2On400KVsideBusBarrelaymakeEEtypeFACiselectromagnetictyperelayanditisveryoldandobsolete.Itssparesarenotavailable,ThisschememaybereplacedwiththenumericalBusBarprotectionscheme.

No No - YES YES - NewGEmakeBBschemecommissioned(dateofservice03.11.2014)

3.REFprotectionof315MVAEMCOTr-IViskeptunderobservation,whichmaybetakenintoservice.


4220VDCChargermakeStateconiscommissionedbutnottakenintoserviceduetosomeproblem.Itshouldberectifiedandtakenintoservice.


5.AdditionalDCdistributionBoardisavailableshouldbetakenintoservicetoseparatetheDCdistributiontoindividualfeeders.


6GPStimesynchronisationsystemisavailable,Relaysof315MVATransformersI,II&IIIareconnected.AlltherelaysofotherfeedersandTransformersaretobeconnected. Yes Yes - No No - Allrelaysconnected

7.Tripping/Closingtimeof400KVItarsi-I&IIandAsoj-I&IICBsarenotrecorded.SamemaybecollectedfromPGCILandupdatetherecord.

Yes Yes - No No - RECORDED

8.Zone-IIIreachsettingof400KVAsoj-I&iifeedersaregivenas120%ofprotectedline(31.23Ohm,Sec.value)Whichisinadequateasbackupzoneprotection.ThetimedelaysettingforZone-IIIisgivenas1000mSec.inallPGCILfeeders.SamemaybereviewedinaccordancewiththeCBIPguidelinesanduniformityofsettingsadopted.

Yes Yes - No No -

9.NoDCleakageobserved,butmixingofDcsource-I&IIdected.Itshouldberectified.

Yes Yes - No No - Rectified

28 400KVS/SIndore 400KV


Grid

17-01-13to18-01-13

Cont….28 400KVS/SIndore 400KV


Grid

17-01-13to18-01-13

of38

Annx-I




ifnotattendedreason



attend


Sl.No.


ProtectionAudit

S/SVoltage


DateofwhichAudit



(Category-A)


Remark

1. The GPS system not available . No No - YES NO - under process

2. The autoreclosure scheme for 220 KV Pipariya and 220 KV Narsingpur has to be commissioned. No No - YES NO - under process

3. Metaling of yard is not done. No No - YES NO - under process

1.The220V 300AH (make:Exide,DOC:03-10-2007) battery set & battery charger have completed their useful life & needs to be replaced.

Yes No - Yes No - Battery set received commissioning work is in progress

2. The C&R panel of 220KV JBP 1,2 are need to be replaced by integrated simplex panels or the existing back up Electromechnical relays should be replaced by numerical relays.

Yes No - Yes No - under process

3. The work of 220KV Main bus -II is under progress and would be commisioned very soon. Yes Yes - No No -

4. The GPS system sands make is available & found out of service due to ongoing civil works in the substation. Yes Yes - No No -

1. Electromechnical and electrostatic back up O/C & E/F relay of 220 KV JBP 1 & 2 feeder and 160 MVA BHEL & CGL Xmer to be replaced by numerical back up O/C & E/F relay

No No - YES NO - Tender is under process of finalisation

2. 220 KV Main bus -II is not availble. No No - YES NO -Since beginning this substation is constructed with approved layout of 1M+1A

3. The GPS system sands make is available and connected except 220 KV JBP 1 & 2 feeder. Yes YES - No No - GPS connected

1 Chichli 220Team of engineers

from various entities constituted by SLDC

13.03.15

2 SUKHA 220Team of engineers


12.03.2015

3 NARSINGPUR 220Team of engineers


13.03.2015

of38

Annx-I




ifnotattendedreason



attend


Sl.No.


ProtectionAudit

S/SVoltage


DateofwhichAudit



(Category-A)


Remark

1. Fire protection system is not available in 220/132/33 KV, 160 MVA Transformer No. I (Make – Areva) Yes No - Yes No - Procurementapprovalisinprocess

2. LBB & Bus Bar protection scheme not commissioned. However control panel for the scheme is available Yes Yes - No No - Scheme commissioned

3. Auto reclosure not in service for 220 KV Chichli & 220 KV Narsinghpur feeders & not commissioned for 220 KV Itarsi feeder No. I & II.

Yes No - No No - Work of Chichli and Narsingpur feeder completed testing to be done

4. DC Earth leakage is observed in 110 V DC system. –Ve bus is earthed Yes Yes - No No - earth leakage attended

5. GPS system of Sands make is available, but not connected in 220 KV Chichli, 220 KV Narsinghpur & 220/132/33 KV 160 MVA transformer No. II. (Port is available on relay but cabling is to be done.)

Yes Yes - No No - GPS connected

6. Load dropping scheme is not available Yes No - No No - To be connected shortly7. Metalling in yard of 160 MVA, BHEL Make transformer No. II is not available / to be done No No - Yes No - Retendering of work is being done

8. Time delay settings & reach settings of zone 2, zone 3 & zone 4 in 220 KV feeders are to be reviewed and corrective measures are to be taken.

YES Yes - No No - Setting revised

4 PIPARIYA 220Team of engineers


16.03.2015

of38

Annx-I




ifnotattendedreason



attend


Sl.No.


ProtectionAudit

S/SVoltage


DateofwhichAudit



(Category-A)


Remark

1. Event sequence recorder is not available. No No - YES NO EventloggingfacilitycommissionedinSCADA

2.time synchronization and GPS facilities available but not in working condition YES NO - No No - MATTERISundercorrespondancewith

firm.3.synchronizing trolley not available. NO No - YES NO NITissueed&inprocess4.220 kv Bus bar protection is connected in alarm mode only complete protection is yet to be taken in service. Yes Yes - No No - BUSBARPROTECTIONTAKENINTO

SERVICE5. In Bina II circuit Auto reclosing facility is not in service due to defect in numerical relay. No NO - YES YES - -

6.220 kv Bus - Tie circuit breaker is not working . No No - YES YES -7.Numerical Relay is not available in 220 kv Bus Coupler. No No - YES YES -

8. Zone -4 protection in all Distance protection Relay are not commissioned. YES YES - No No -

9.Load Drop scheme are not available . YES YES - No No - -

10.REF protection is not available in both the 220 kv transformer. No NO - YES No - FEASIBILITYFORREFPROTECTIONTO

BECHECKED

1 Event sequence recorder is not available. Yes No _ Yes No - EventloggingfacilitycommissionedinSCADA

2.Time synchronization and GPS facilities is not available. No No _ Yes No - In process of procurement

3.synchronizing trolley is not available. No Yes _ No No _ NITissueed&inprocess4.220 kv Bus bar protection is available but not commissioned. No No _ Yes Yes _ Bus Bar Scheme commissioned

5.220 kv Bina PGCIL circuit breaker (telk make)is out of service. No No _ Yes Yes _ New CB commissioned

6. 132kv capacitor bank circuit breaker is out of service. Yes Yes _ No No _7.In 110 DC system ,earth leakage is observed. The same needs to be rectified. Yes Yes _ No No _ _

5 GUNA 220Team of engineers


12 & 13.03.2015

6 SHIVPURI 220Team of engineers


14 & 15.03.2015

of38

Annx-I




ifnotattendedreason



attend


Sl.No.


ProtectionAudit

S/SVoltage


DateofwhichAudit



(Category-A)


Remark

1. Event sequence recorder is not available. No No - Yes No - EventloggingfacilitycommissionedinSCADA

2.Time synchronization and GPS facilities is available.Connected in 220 kv Shivpuri -1 and Shivpuri-II .Need to be connected with in balance feeders.

Yes Yes - No No -

3.synchronizing trolley not available. Yes No - Yes No - NITissueed&inprocess4.In 110 V DC Source-II ,earth leakage is observed. The same needs to be rectified. Yes Yes - No No -

5.220 kv Bus Coupler DPR relay (GE,D60) Found defective. Yes Yes - No No - DPR Relay replaced on date -

22.06.156.110V DC supply is looped from 160MVA transformer C & R panel.separate DC supply need to be provided from DC distribution pannel.

Yes Yes - No No - Separate DC supply provided from DC distribution panel

7. 160 MVA (AREVA MAKE)transformer ,windiging Temperature indicator found faulty. Yes Yes - No No - -

1) 160 MVA AREVA 5th harmonic setting is 25 % to be revised to 40 %. Second harmonic to revised to 15 %. Yes Yes - No No -

2) 132 KV Khachrod feeder length is 15 KM in DPR MHO setting is selected to be revised to QUAD for PH-G Zone-I.

Yes Yes - No No -

3) 132 KV Mahidpur feeder E/F TLS setting is 0.15 to be revised to 0.25. Yes Yes - No No -

4) LBB of 160 MVA CGL make xmer on 132 KV side are not in service . Yes No - YES YES - -

5) GPS is provided but not connected to relays. Yes No - YES NO - GPS being procured6) Load dropping scheme is not provided on 160 MVA Xmers. Yes Yes - No No - -

7 SABALGARH 220Team of engineers


16 & 17.03.2015

8 NAGDA 220Team of engineers


16.04.2015

of38

Annx-I




ifnotattendedreason



attend


Sl.No.


ProtectionAudit

S/SVoltage


DateofwhichAudit



(Category-A)


Remark

1. Relay setting calculation of 220 KV Damoh Line and 132 KV Feeders of S/S has been checked and found that Zone-3 setting of 220 KV Damoh line is on higher side, the same may be reviewed as per recommendation of CBIP.

Yes Yes - No No -

2. Auto-reclosing Scheme has not been provided in 220 KV Damoh Line. The same may be provided as per recommendation of CBIP.

Yes Yes - No No -

3. Carrier Protection of Permissive Under Reach (PUP) are provided for 220 KV Damoh Line Yes Yes - No No -

4. One DC source for 110V & 48V each is provided in 220 KV sub station. Healthiness and earth leakage has been checked and found in good condition. However, battery set is found very old and required for replacement. Year of manufacturing and year of installation of battery set is mentioned as under

-

Description: 110 Volt Battery No No - Yes No - InprocessDate of Mfg : NA -Date of commissioning : 15.08.2006 -Description: 48 Volt Battery No No - Yes No - InprocessDate of Mfg : 2002 -Date of commissioning : 15.08.2006 -5. GPS is available and time Synchronization of 160 MVA Xmer-2 is not commissioned. No Yes - No No -

6. DR’s facility is inbuilt feature of numerical relay provided for Damoh Feeder & Bus coupler and 160 MVA Xmers.

Yes Yes - No No -

7. Synchronizing trolley is not available Yes No - Yes No - NITissueed&inprocess

9 TIKAMGARH 220Team of engineers


13.03.2015

of38

Annx-I




ifnotattendedreason



attend


Sl.No.


ProtectionAudit

S/SVoltage


DateofwhichAudit



(Category-A)


Remark

8. Features to be disabled in numerical relay are not found during checking Yes Yes - No No -

9. Bus bar protection scheme of 220 KV is found out of circuit due to defective module. The same may be put under service at the earliest. Time Synchronization may also be provided with GPS. Further, B Phase Potential Transformer (PT) of 220 KV Main Bus -2 is not available. Due to this reason, Main Bus -2 can not be charged during any emergency. So that above PT may be installed at the earliest.

Yes Yes - No No -

10. Load drop scheme is not available Yes No - No No - Inprocess1. Testing of DPR for 220 KV lines is carried out in yr.2007.Relay testing is required. Yes Yes - No No - -

2. GPS System of SANDS make is available with 02 nos of spliters, each for 10 Nos relays .It has developed some defect and matter is under correspondence with the firm.

Yes Yes - No No __ __

3. Synchronization trolley is not available NO NO - Yes No __ NITissueed&inprocess4.Load dropping scheme for x-mer is not available. Yes Yes - NO NO - __

5. DG Set is not available at the S/s. Yes NO - Yes No __ DGSETAREINPROCESSOFDELIVERYONRECEIPTWILLBECOMMISSIONEDSHORTLY

Cont….9 TIKAMGARH 220

Team of engineers from various entities constituted by SLDC

13.03.2015

10 SEONI 220Team of engineers


11.03.15

of38

Annx-I




ifnotattendedreason



attend


Sl.No.


ProtectionAudit

S/SVoltage


DateofwhichAudit



(Category-A)


Remark

1. Auto-reclosing is provided in 220 KV Satna Line. However, setting of single phase Dead Time is found 0.7 S in place of 1Sec as per recommendation of CBIP. Setting of the same may be reviewed accordingly

Yes Yes - No No -

2. Carrier Protection of Permissive Under Reach & Directional Earth Fault (PUP & DEF) are provided for 220 KV Satna Line.

Yes Yes - No No -

3. One DC source for 110V & 48V each is provided in 220 KV sub station. Healthiness and earth leakage has been checked and found in good condition. However, battery set is found very old and required for replacement. Year of manufacturing and year of installation of battery set is mentioned as underDescription:110 Volt Battery NO NO - YES No - InprocessDate of Mfg : 2006Date of commissioning: 17.10.2007Description:48 Volt Battery NO NO - YES No - InprocessDate of Mfg : 2002Date of commissioning: 19.10.20074. Numerical Relay of 160 MVA, 220/132KV and Relay of Feeders of 132 KV are not connected with GPS, the same may be connected with GPS

Yes Yes - No No -

5. Synchronizing trolley is not available Yes No - No No - NITissueed&inprocess6. Features to be disabled in numerical relay are not found during checking Yes Yes - No No -

7. Time synchronization is required to be done with existing GPS Yes Yes - No No -

11 CHHATARPUR 220Team of engineers


12 & 13.03.2015

of38

Annx-I




ifnotattendedreason



attend


Sl.No.


ProtectionAudit

S/SVoltage


DateofwhichAudit



(Category-A)


Remark

1. Synchronization trolley is not available No No - Yes No - NITissueed&inprocess2. Load dropping scheme is to be provided on 100 MVA x-mer of CGL make also with following: 110% of full load on x-mer setting: - Trip to 132 KV Khapasami Feeder & 132 KV Chhindwara Feeder.

Yes Yes - No No - Load dropping scheme connected

3. DG Set is not available at the S/s. No No - Yes No - DGSETAREINPROCESSOFDELIVERYONRECEIPTWILLBECOMMISSIONEDSHORTLY

1. 110 V & 48 V Battery sets were commissioned in 2005. Replacement of 110 V &48 V battery set are required

No No - Yes Yes - -

2. Synchronization trolley is not available No No - No No - Not required3. 220 KV Bus-Bar Protection panel is available at the S/s but not commissioned. No No - Yes No 31.03-16 due to control room extention work ,

commissioning is held up4. DG Set is not available at the S/s. Estimate for 25 KVA DG Set is sanctioned, recently No No - Yes No - DGSETAREINPROCESSOFDELIVERYON

RECEIPTWILLBECOMMISSIONEDSHORTLY1. GPS System of SANDS make is available for 10 Nos relays. IRIG B Port is not available in ABB make relays. Up gradation/ addition is required for unconnected relays.

No No - Yes No - Inprocess

2. Synchronization trolley is not available No No - YeS No - NITissueed&inprocess

3. DG Set is not available at the S/s. YES No - YES No - DGSETAREINPROCESSOFDELIVERYONRECEIPTWILLBECOMMISSIONEDSHORTLY

1. Synchronization trolley is not available. No No - YeS No - NITissueed&inprocess2. Load dropping scheme is not provided YES YES - No No - Load dropping scheme connected

3. DG Set is not available at the S/s. YES No - YES No - DGSETAREINPROCESSOFDELIVERYONRECEIPTWILLBECOMMISSIONEDSHORTLY

12 SARNI 220Team of engineers


14.03.2015

13 PANDURNA 220Team of engineers


13.03.2015

14 CHHINDWARA 220Team of engineers


10 & 12.03.2015

15 BETUL 220Team of engineers


15.03.2015

of38

Annx-I




ifnotattendedreason



attend


Sl.No.


ProtectionAudit

S/SVoltage


DateofwhichAudit



(Category-A)


Remark

1) 220 kv Daloda-Nagda feeder Zone II setting is 105 % should be minimum 120 % of protected line. YES YES - No No -

2) 220 KV Daloda-REGPL feeder(Radial Feeder) Zone-1 setting 100% of protected line to be revised to 120 % of protected line.

YES YES - No No -

3) Bus-Bar protection is commissioned. 220 KV LBB Protection has been provided on bus bar protection panel. Bus bar Protection Panel is not in service to be taken in service. Waiting for through fault on 220 KV feeder.

YES YES - No No -

4) GPS is not provided. No No - Yes NO - In process5) Load dropping scheme is not provided on 160 MVA Xmer. YES YES - No No -

6) Over flux setting of 160 MVA is 120 % is alarm and 140 % trip. To be revised 110 % Alarm and trip to 120 % Yes YES - No No -

16 DALODA 220Team of engineers


15.04.2015

of38

Annx-I




ifnotattendedreason



attend


Sl.No.


ProtectionAudit

S/SVoltage


DateofwhichAudit



(Category-A)


Remark

1. Synchronizing trolley is available but not used till date. NO NO - No No - Inprocess

2. Carrier protection panel at remote end is not available. NO NO - YES NO To be Procured

3. Battery bank was commissioned on 16.11.2012. Battery charger was set off for about 45 Min voltage dropped from 110 V to 106 V. Leakage problem in almost all batteries since installation.

YES YES - YES No - Inprocess

4. GPS is not available. Bus coupler DPR oscillography triggered through each feeder master initiation should be provided till GPS is not available so that fault initiation can be identified.

NO NO - YES NO under consideration with higher off.

5. Bus bar protection is not commissioned so far. Recently supplied. YES YES - No No - Bus Bar scheme commissioned on

Dt. 09-10-15

6. DG set not available. YES NO - YES NO - DGSETAREINPROCESSOFDELIVERYONRECEIPTWILLBECOMMISSIONEDSHORTLY

7. LBB protection scheme at 132 KV not commissioned. YES YES - No No - -8. Direct trip scheme is not available in two feeders Kotmikala 1 & 2. YES NO - No No - Inprocess

9. Load drop not available. YES YES - No No - Inprocess10. Broken conductor feature(negative sequence) not used. YES YES - No No - -

11. DR trigger for fault current sharing should be configured. YES YES - No No - -

12. SF6 & air pressure status on the panel. YES NO - YES YES -13. Relay fault recording menu should be provided to operating staff. YES YES - No No -

14. Auto reclose scheme is kept off. Recommended to be started. YES YES - No No - -

15. DC voltage (110 V and 48 V) meters should be provided in control room. No No - YES YES -

16. Annunciation front panel is not having any indication for auto-reclose operation. YES YES - No No - -

17. Thermo-vision is out of order and regular readings are not taken on monthly basis. YES YES - No No - -

18. Under-frequency relay supplies are not commissioned. YES YES - No No - -

19. Df/dt relay is not available. YES NO - NO NO not included in scheme20. Group selection through input energisation should be provided. YES YES - No No - -

21. Over current /EF relays settings should be directional which are non-directional at present. YES YES - No No - -

22. Transformer tertiary circulating current CT is not connected to panel for Circulating current protection. YES YES - No No - -

23. Float charger is not in working condition. YES YES - No No - -24. At 160 MVA transformer REF protection is not in service. YES YES - No No - -

25. At 40 MVA transformer HV & LV, REF protection is not in service. Yes NO - No NO Not required

17 ANUPPUR

220Team of engineers


17.03.2015

Cont….17 ANUPPUR

of38

Annx-I




ifnotattendedreason



attend


Sl.No.


ProtectionAudit

S/SVoltage


DateofwhichAudit



(Category-A)


Remark

1) 220KV Ratlam-I DPR GE D-60 healthy and trouble both LEDs are glowing. Trouble LED is due to its own internal Battery fail signal. The trouble is to be attended so that if other problem arises it may be detected.

NO No - Yes Yes - -

2) Trip CKT Supervision relay of 220 KV TBC Y phase TC_II is defective (preclose). Yes Yes - NO NO -

3) Two sets of 110 V battery sets are there. DOC are 16/1/13 & 4/2/2007 respectively. Battery sets gravity and voltages are ok. 48 V battery set DOC is 2/6/2005. The condition of 4 nos. cells is not good (gravity 1.160).

No NO - Yes Yes -

4) A/R and carrier aided tripping not provided in 220 KV Ratlam-I & II feeder. Yes Yes - No No -

5) GPS is provided but not in service. Yes Yes - No No -6) In DPR mho characteristics is used for feeder which are short in length (i) 132 KV Goutampura-II I length 24Km Suggested to use QUAD characteristic for Ph-G Zone-I

Yes Yes - No No - -

7) In differential relays of 160 MVA AREVA and 100 MVA AREVA Transformer 5th harmonic restrain setting is 25 % to be revised as per guidelines.

Yes Yes - No No - -

8) Load dropping scheme is not provided on 160 MVA Xmer –I & II. Yes Yes - No No - -

06.04.201518 BADNAGAR 220Team of engineers


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Sl.No.


ProtectionAudit

S/SVoltage


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(Category-A)


Remark

1) 220 KV DEWAS feeder bay is having only one CVT in R-ph. One additional CVT is required in other phase for PH-PH coupling.

Yes No - Yes No 31.12.2015 In process

2) 1x110 V and 1x48 V are commissioned in JUNE-2007. Both required replacement. No No - Yes Yes - -

3) In battery room Exhaust Fan is not provided. Yes Yes - No No - -4) A/R is commissioned but not in service for both feeders. Yes Yes - No No - -

5) GPS is provided but not in service. Yes Yes - No No - -6) In DPR mho characteristics is used for both the CKTs but QUAD characteristics is required as line length is less than 50 Km.

Yes Yes - No No - -

7) 220 KV Indore feeder ZONE-2 reach is 100% of protected line + 100 %Short line adopted, its revision is required as per CBIP guidelines i.e. 120% of line to be protected.

Yes Yes - No No - -

8) REF protection is not provided on 100MVA 220/33-33 KV Xmer as the neutral CT is not provided. By providing external Neutral CT scheme may be commissioned.

No No - Yes No 31/03/16 Proposal Submitted to provided this arrangment.

9) In DPRs PT FUSE FAIL. PSB/OSB not enabled. Yes Yes - No No -10) In 220 Kv DEWAS feeder carriers aided tripping is not provided which is to be provided. NO No - Yes Yes -

19 INDORE EAST (BICHOLI) 220


12.03.2015

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Sl.No.


ProtectionAudit

S/SVoltage


DateofwhichAudit



(Category-A)


Remark

1) REF protection is provided on 160 MVA Xmer but presently not enabled which is required to be enabled. Yes Yes - No No - -

2) REF protection is provided on 160 MVA Xmer but presently not enabled which is required to be enabled. Yes Yes - No No - -

3) 110 V, 200AH battery set is available. DOC is 17/06/2008. Battery sets gravity and voltages are ok. 48 V, 300AH battery set DOC is 19/08/2007.

Yes Yes - No No - no any deficiency. Battery sets are in healthy condition

4) A/R and carrier aided tripping not provided in 220 KV feeder. Yes No - No No - Turn key project to be completed by

M/s Shreem

5) Bus-Bar protection is not commissioned. No No - No No - Turn key project to be completed by M/s Shreem

6) LBB is provided on 132 KV Xmers but not provided in 220KV Xmer/feeder. Yes Yes - No No - -

7) GPS is not provided. No No - Yes No - In process8) Load dropping scheme is not provided on 160 MVA Xmer. Yes Yes - No No - -

9) In backup relay directional feature in not enabled for both 220 KV Xmer & feeder, which is to be enabled as per the guidelines.

Yes Yes - No No - -

10) Timings for zone2 & zone3 is to be reviewed in accordance with the coordination for 220KV tapped line at Dhar substation end.

Yes Yes - No No -

11) In 40 mva Xmer I&II differential relay slope 2 chosen is 90%, which is to be revised as per the guidelines. Yes Yes - No No -

20 DHAR 220Team of engineers


07.04.2015

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Sl.No.


ProtectionAudit

S/SVoltage


DateofwhichAudit



(Category-A)


Remark

1) 220 kv Transfer panel numerical relay is to be provided.. No NO - YES YES - -

2) REF protection in 160MVA-I CT is not provided in neutral bushing hence REF not provided. YES NO - YES NO NEUTRAL BUSHING CT IS

REQUIRED3) 132 KV feeders INT-I & INT-II (4 & 5 Km length) mho setting of Zone-1 to be changed to QUAD (Ph-G). YES YES - NO NO

4) AR not configured in both 220 KV Daloda and Nagda feeder. NO NO - NO NO 31.03.2016

NO PROVISION IS PROVIDED IN C&R PANEL OF 220 KV DALODA PANEL , & AR RECLOSURE WILL BE CONFIGURED UP TO NEXT MONTH

5) Trip circuit healthy of feeders found ok. In old 220 KV C&R panels only one set of trip healthy LEDs are provided. Not available for TCH-II.

Yes Yes - NO NO - -

6) 110 V 600 AH and 48 V 300 AH chargers are very old (Yr of Mfg 1989) SHEETRON make having float section defective and charger is having fuses in load side(presently not in practice). Replacement of charger may be considered.

YES Yes - YES NO 31/03/16 In process

7) GPS is provided and not connected for Bus bar protection panel. Yes Yes - No NO - -

8) Load dropping scheme is not provided on 160 MVA-II Xmer. Yes YES - NO NO - -

21 NEEMUCH 220Team of engineers


16.04.2015

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Sl.No.


ProtectionAudit

S/SVoltage


DateofwhichAudit



(Category-A)


Remark

1. Bus Bar Protection scheme available but not commissioned. GE Make B-90 Bus bar protection scheme is under commissioning therefore it is suggested that Zone-IV reach and delay of 220KV feeders can be revised to cover 220 KV so that it can operate in 200ms.

Yes Yes - NO NO - Commissioned

2. DG Set not available. Yes NO - Yes NoDGSETAREINPROCESSOFDELIVERYONRECEIPTWILLBECOMMISSIONEDSHORTLY

3. 220 KV Bhopal feeder:- relay settings checked and verified. The zone-III reach is to be reviewed in accordance with LILO of 220 KV

Yes Yes - NO NO - Completed

4. 132/33KV, 63 MVA X'mer-1:- relay settings checked & verified. It is suggested to revise the step-1 bias setting to 20% to make the relay more sensetive.


5.UE make electromagnetic back up relay is in service for 63 MVA X'mer-II on 132KV side. It is suggested to replace it by suitable relay. It is intimated that a static back-up relay has been arranged for this replacement.


6. 132KV Vidisha-Gulabgunj Railway Traction-I&II:- this line is protected by Backup O/C & E/F relay as main protection DPR not provided.

NO NO - Yes No - 2 No C&R panel for 132 KV feeder is being released

22 Vidisha 220Team of engineers


07.04.2015

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Sl.No.


ProtectionAudit

S/SVoltage


DateofwhichAudit



(Category-A)


Remark

1. DF/DT relay not available. NO NO - Yes No 31/03/16 Df/dt Relay Required,2. 220 KV Rajgarh-Sujalpur PGCIL-II:- relay settings checked and verified. It is found that the Zone-II reach is taken as 105% of the protected line. It may be due to the very short line in the next section of PGCIL.

Yes Yes - NO NO - Revised

3. 132/33 40MVA X'mer-II:- relay settings checked and verified. The bias setting is taken as 30%. It can be revised to 20% to make it more sensitive.


4. 220 KV Bus Bar protection commissioned recently on date 06.02.2015. it is under observation and taken in alarm mode. It is intimated that tripping shall be connected after checking performance on any through fault condition.

Yes Yes - NO NO - Taken in service for Trip

5. DC leakage detected in 110 Volt DC system. DC -ive to earth value showing 0.5volts it is intimated. It is intimated that it has occurred recently already in notice, remedial action is already in process.

Yes Yes - NO NO - ATTENDED

6. DG sets is not available No NO - Yes NO - DGSETAREINPROCESSOFDELIVERYONRECEIPTWILLBECOMMISSIONEDSHORTLY

7. it is suggested that Zone-4 reach and time delay can be revised so as to cover 220KV bus only so that it can work as backup to bus bar protection to operate in 200msec.


8. some of the relays are not synchronised with GPS, proper synchronization is to be arranged. Yes Yes - No NO - -

23 Rajgarh Biaora 220Team of engineers


08.04.2015 & 09.04.2015

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Sl.No.


ProtectionAudit

S/SVoltage


DateofwhichAudit



(Category-A)


Remark

1. ZONE 4 TIME SETTING PROVIDED 1000 ms, HOWEVER IT SHOULD BE VERIFIED AND REVISED AS PER CBIP GUIDLINES


2. GPS SYSTEM SANDS MAKE FAILS FREQUENTLY NEEDS RECTIFICATION AND ITS RESTORATION AT THE EARLIEST FOR PROPER FUNCTIONING.

Yes Yes - NO NO - -

3. BATTERY ROOM SIZE IS NOT SUFFICIENT .NO SPACE FOR MAINTENANCE PURPOSE AND UNSAFE, HENCE ACCOMODATING/INSTALLING BATTERIES SUITABLY IN THE ROOM .

Yes Yes - NO NO -

4. 220 KV DC BATTERY FLOAT CHARGER IS NOT WORKING .CHARGING IS DONE THROUGH BOOST CHARGER ONLY AT LESS CURRENT. FLOAT CHARGER NEEDS TO BE MADE OPERATIONAL.

Yes Yes - No NO - -

5. NEGATIVE IS EARTHED IN D.C. SYSTEM, IT SHOULD BE RECTIFIED. Yes Yes - NO NO -

6. SYNCHRONISING TROLLY IS AVAILABLE BUT NOT IN WORKING CONDITION Yes Yes - NO NO - -

7. NO METALLING IS FOUND IN SWITCHYARD. IT HAS BEEN INTIMATED SINCE COMMISSIONING OF SUB-STATION DATED 11.02.1998,METALLING NOT DONE.

No NO - Yes NO - Tender is under negotiation

8. FIRE PROTECTION SYSTEM IS NOT AVAILABLE IN BOTH TRANSFORMERS EACH OF 160 MVA, 220/132 KV . IT SHOULD BE PROVIDED FOR SAFETY PURPOSE.

No NO - Yes NO - In process

24 KATNI 220Team of engineers


06.04.2015

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Sl.No.


ProtectionAudit

S/SVoltage


DateofwhichAudit



(Category-A)


Remark

1. A/R is disabled, the same should be configured and taken in service. Yes No - No NO -

PGCIL is presently not agree due to stress on ICT's. They have saught consent of PGCIL Vadodara H.Q.

2. Directional feature is not available in O/C E/F relays of 220 KV & 132 KV feeders. No No - Yes No - In process

3. 110 V & 48 V Battery sets were commissioned in 2004. The Battery sets are very old. It requires capacity test / replacement.

No No - Yes No - In process

4. GPS system of SANDS make is available. It is connected to differential relays of 3x40 MVA x-mer. It is to be connected with rest of the relays. GPS system is also showing ‘GPS fail’ LED. Time of GPS unit is not matching with connected relay. GPS system may be got attended.

Yes Yes - No No - GPS is repaired by firm

5. Synchronization trolley is not available. Yes No - Yes No - NITissueed&inprocess6. No multiple earthing of CT secondary circuit is there at the substation. It is checked by removing earthing CT secondary star point at CT junction box of 220 KV B/C.

Yes Yes - No No -

7. LBB scheme is not provided. No No - Yes No - LBB relays & tripping relays are being arranged

8. Load dropping scheme is not available. No No - No No - In process

9. DG set is not available. No No - Yes No - DGSETAREINPROCESSOFDELIVERYONRECEIPTWILLBECOMMISSIONEDSHORTLY

10. Electromechanical relays are used for back up protection (Except 132 KV Badgaon). No No - Yes No - In process

11. In 220 KV CTs no separate core of PS class is available for Bus Bar Protection. YES Yes - No No - -

25 NEPANAGAR 220Team of engineers


08.04.2015

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Sl.No.


ProtectionAudit

S/SVoltage


DateofwhichAudit



(Category-A)


Remark

1. AUTO RECLOSE IS NOT ENABLED IN 220 KV FEEDER RELAYS AND NECESSARY ACTION SHOULD BE TAKEN FOR MAKING IT ENABLE

Yes NO - No No - Work in progress.

2. ZONE-4 TIME SETTING IS TO BE REVISED, AT PRESENT 1000ms SETTING PROVIDED AND TO BE SET AS PER CBIP GUIDELINE

Yes Yes - No No -

3. FIRE PROTECTION SYSTEM FOR 160 MVA, 220/132/33 KV TRANSFORMER IS NOT AVAILABLE. IT NEEDS TO BE PROVIDED FOR SAFETY POINT OF VIEW.

NO No - YES NO - Procurementapprovalisinprocess

4. BATTERY SET COMMISSIONED ON 06.06.08 & SERVED ITS USEFUL LIFE. STATION BATTERY NEEDS TO BE REPLACED.

No No - YES NO - In process

5. FLOAT CHARGER OF 110 V STATION BATTERY & 48 V PLCC BATTERY IS NOT IN WORKING ORDER. PROBLEM SHOULD BE RECTIFIED FOR MAKING FLOAT CHARGER OPERATIONAL.

Yes Yes - No No -

6. 220 KV S/S SIDHI CONNECTED TO AMARKANTAK THERMAL POWER STATION THROUGH 220 KV AMARKANTAK FEEDER. HENCE, SYNCHRONIZATION TROLLEY SHOULD BE PROVIDED.

Yes No - YES NO - NITissueed&inprocess

26 SIDHI 220Team of engineers


09.04.2015

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Sl.No.


ProtectionAudit

S/SVoltage


DateofwhichAudit



(Category-A)


Remark

1. GPS IS NOT AVAILABLE IN SUB-STATION, IT SHOULD BE PROVIDED FOR RELAY TIME SYNCHRONIZATION.

No No - YES NO - In process

2. AUTO RECLOSE IS NOT ENABLED IN 220 KV FEEDER RELAYS AND NECESSARY ACTION SHOULD BE TAKEN FOR MAKING IT ENABLE

Yes No - No No - Work in progress

3. ZONE-4 TIME SETTING IS TO BE REVISED, AT PRESENT 1000ms SETTING PROVIDED AND TO BE SET AS PER CBIP GUIDELINE.

Yes Yes - No No -

4. FIRE PROTECTION SYSTEM FOR 160 MVA, 220/132/33 KV TRANSFORMER IS NOT AVAILABLE. IT NEEDS TO BE PROVIDED FOR SAFETY POINT OF VIEW.

No No - Yes No - Procurementapprovalisinprocess

5. FLOAT CHARGER OF 110 V BATTERY CHARGER IS NOT WORKING, PROBLEM SHOULD BE RECTIFIED FOR TAKING IT INTO SERVICE.

Yes Yes - No No -

27 MAIHAR 220Team of engineers


07.04.2015

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Sl.No.


ProtectionAudit

S/SVoltage


DateofwhichAudit



(Category-A)


Remark

1. 220KV Bhopal-1 :- It is suggested to review the zone-III setting in accordance with the change in the line length at other ends. At present it seems higher.

Yes Yes - No No -

2. 220/132KV, 160MVA X'mer-1:- The slope-1 setting given as 30%. It can be revised to 20% to make the protection more sensitive.

Yes Yes - No No -

3. 132/33KV, 20MVA X'mer-1:- The slope-1 setting given as 30%. It can be revised to 20% to make the protection more sensitive.

Yes Yes - No No -

4. Float charger of 110V Battery charger is not working, requires rectification at earliest. Yes Yes - No No -

5. Some of the 220KV & 132KV CB timing is to be taken. It is suggested to carryout the testing in coming maintenance schedule.if

Yes Yes - No No -

6.DG set is not available No No - Yes No - DGSETAREINPROCESSOFDELIVERYONRECEIPTWILLBECOMMISSIONEDSHORTLY

1) A/R and carrier aided tripping not provided in 220 KV feeders. YES YES - Yes No -

Out door equipments and protection coupler is required for 220 KV Bicholi feeder.

2) GPS is provided but not in service. YES YES - No No3) Partial negative D.C. leakage observed. Positive to earth voltage=87 volt and Negative to earth =33 volts YES YES - No No -

4) In backup relay directional feature in not enabled for both 220 KV X-mers & feeder, which is to be enabled as per the guidelines.

Yes YES - No No -

5) In 160 MVA TELK X-mer differential relay slope 2 chosen is 90%, which is to be revised as per guidelines. High set settings & Fifth harmonic blocking setting also to be reviewed as per the guidelines.

Yes YES - No No -

1. Relay setting calculation checked. Setting verified with relay for 160 MVA x-er. SOTF, PSB and VT fuse fail features are enabled in DPRs.Setting for zone 3 may be reviewed to restrict reach not to cover next voltage level at far end of line.

Yes Yes - No No -

2. Direct trip and A/R are not in service. The same should be configured and taken in service. The outdoor PLCC equipment are not available for 220KV Itarsi feeder-1.

No No - Yes No - work under progress

3. GPS system of SANDS make is available. It is connected to differential relays of 160 MVA x-mer-1. It is to be connected with rest of the relays.Time of GPS unit is not matching with connected relay. GPS system may be got attended.

Yes Yes - No No - GPS connected

4. Synchronization trolley is not available. No No - Yes No - NITissueed&inprocess5. Load dropping scheme is not available. Yes Yes - No No - Load dropping scheme connected6. DG set is not available. No No - Yes Yes - -7. Most of the backup relays are electro mechenical type. No No - Yes No Numrical relays to be procured

28 BAIRAGARH 220Team of engineers


06.04.2015

29 DEWAS 220Team of engineers


08.04.2015

30 HANDIYA 220Team of engineers


09.04.2015

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S/SVoltage


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(Category-A)


Remark

1. FIRE PROTECTION FOR 220 KV/132KV,160 MVA TRANSFORMER IS NOT AVAILABLE AND IT SHOULD BE PROVIDED.

No No - Yes No - Procurementapprovalisinprocess

2. AS SUCH KOTAR S/S IS CONNECTED TO TONS HYDEL POWER STATION THROUGH 220 KV TONS FEEDER, HENCE SYNCHRONIZING TROLLEY SHOULD BE PROVIDED AT THIS SUB-STATION. AT PRESENT SYNCHRONIZING TROLLEY IS NOT AVAILABLE.

No No - Yes No - NITissueed&inprocess

3. GPS SYSTEM IS NOT AVAILABLE IN SUB-STATION. No No - Yes No - In process

4. FLOAT CHARGER OF 110 V AND 48 V BATTERY CHARGER ARE NOT WORKING/ OUT OF SERVICE, PROBLEM SHOULD BE RECTIFIED/ ATTENDED FOR MAKING IT OPERATIONAL.

Yes Yes - No No -

5. LBB PS VALUE IS FOUND HIGH (1.05). IT SHOULD BE COORDINATED PROPERLY AS PER GUIDELINE. Yes Yes - No No -

6. ZONE-4 TIME SETTING IS TO BE REVISED, AT PRESENT 1000ms SETTING PROVIDED AND TO BE SET AS PER CBIP.

Yes Yes - No No -

7. NEGATIVE SUPPLY IS EARTHED IN 110 V D.C. SYSTEM, WHICH SHOULD BE REMOVED AT THE EARLIEST.

Yes Yes - No No -

8. IN 220 KV 160 MVA TRANSFORMER C&s make CSPC RELAY EARTH FAULT TMS SEEMS HIGH (1.0). IT SHOULD BE REVIEWED AND TO BE CORRECTED IF REQUIRED.

Yes Yes - No No -

31 KOTAR 220Team of engineers


08.04.2015

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(Category-A)


Remark

1) REF protection is not provided on 160 MVA I, II & 63 MVA Xmer. Yes Yes - NO NO -

2) Numerical relays are provided for Main protection & found healthy in all bay . Feature of D60 relay (DPR) is used as a differential protection for 160 MVA Transformer No 1, it requires replacement by other numerical differential relay to utilize other features like REF etc.

No No - Yes Yes - -

3) Trip CKT Supervision relays are provided & indicating healthy condition. TCH Lamps found off for 16 MVA Xmer, 132 KV Kukshi –one lamp, 132 KV Inter Conn.-1 &2 one lamp,160 MVA I & II 220 KV side

Yes Yes - NO NO -

4) 1x110 V and 1x48 V are commissioned in Nov 2005& 2006 respectively. Both required replacement being very old. In 110 Battery set one cell is out.

No No - Yes No 31.03.2016 In process

5) In battery room Exhaust Fan is not provided. Yes Yes - NO NO -6) A/R is not in service for both 220 KV feeders. Yes Yes - NO NO -7) GPS is provided but not in service. Yes Yes - NO NO - -8) In DPR mho characteristics is used for feeder which are short in length (i) 132 KV Int. Conn.I and II length 5.6 &6 Km Suggested to use QUAD characteristic.

Yes Yes - NO NO -

9) ZONE-3 Time setting provided 800 ms which is to be revised to 700 ms. Yes Yes - NO NO -

10) Load dropping scheme is not provided on 160 MVA Xmer –I & II. Yes Yes - NO NO -

11) DGA test results has not been carried out since last two years for both 160 MVA Xmer in Jan’14 samples sent to Oil Lab Ujjain but results were not reliable due machine problem. To be carried out twice in a year.

Yes Yes - NO NO -

12) In 220 KV PGCIL–I & II feeder carriers aided tripping has not been provided which is to be provided. Yes Yes - NO NO -

32 RAJGARH

220Team of engineers


13.03.2015

Cont….32 RAJGARH

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(Category-A)


Remark

1. Synchronizing trolley is not available. No No - YES NO - NITissueed&inprocess

2. Carrier protection panel at remote end is not available YES No - YES NO - To be required.

3. Battery bank was commissioned on 05.06.2006. Battery charger was set off for about 2.5 hrs, voltage dropped from 110 V to 105 V. Two cells are not working. Recommended for replacement.

No No - YES NO - Inprocess

4. GPS is available but not enabled in relay. Yes YES - No No - -

5. Bus bar protection kept off since 13.07.14 .Needs to be taken into service YES YES - No No - -

6. DG set not available. YES No - YES NO DGSETAREINPROCESSOFDELIVERYONRECEIPTWILLBECOMMISSIONEDSHORTLY

7. LBB protection scheme at 132 KV not commissioned. YES NO - No No - Work in progress

8. Direct trip scheme is not connected for 220KV feeders. YES NO - No No - Work in progress

9. Broken conductor feature not used. Yes YES - No No - -

10. DR trigger for fault current sharing should be configured. YES NO - No No - Work in progress

11. SF6 & air pressure status on the panel. YES No - YES NO alarm/indication facia is to be procured

33 BIRSINGHPUR PALI 220


16.03.2015

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Remark

12. Relay fault recording menu should be provided to operating staff. YES YES - No No -

13. Auto reclose scheme is kept off. Recommended to be started after problem rectification. YES YES - No No - -

14. DC voltage (110 V and 48 V) meters should be provided in control room. No No - YES YES - -

15. 110V Battery charger voltage select switch is not working float charger is not in working condition. YES YES - No No - -

16. Annunciation front panel is not having any indication for auto-reclose operation. YES YES - No No - -

17. Thermo-vision is out of order and regular readings are not taken on monthly basis. YES YES - No NO - -

18. Under-frequency relay supplies are given without fuse in between. YES YES - No No - -

19. Df/dt relay is not connected. NO NO - No No - Not in plan

20. Group selection through input energisation should be provided. YES NO - No No - Work in progress

21. Over current /EF relays settings should be directional which are non-directional at present. YES YES - No NO

22. Transformer tertiary circulating current CT is not connected to panel. YES YES - No No - -

23. At 160 MVA transformer REF protection is not in service. NO NO - Yes No - Work in progress

Cont….33

BIRSINGHPUR PALI 220


16.03.2015

State:- Madhya PradeshENTITY - OMKARESHWAR POWER STATIONQuarterly Report for the period of October 2015-December 2015

If identified for PA

Yes NoPA

conducted on date

if not done, Target Date

for PAYes No Total

Category A

Category B Total

Category A

Category B Total

Category A

1 Omkareshwar Power Station 220 Yes Yes 5 5 4 1

Name of the S/s kV

No. of Deficiencies attendedNo. of Deficiencies not yet

attended

Annexure - A.2.2

Protection Audit

Name of the utility:Omkareshwar Power Station FY:15-16

Whether identified for PA in this FY

Deficiencies observed No. of Deficiencies

Sr. No.

State:- Madhya PradeshENTITY - OMKARESHWAR POWER STATIONQuarterly Report for the period of October 2015-December 2015

Remarks

Yes/NoWhether attended Yes/No

If not attendedreason

Yes/NoWhether attended Yes/No

If noexpected date to attend

130 Omkareshwar Power Station 220 Auto reclosing of all the 220KV Lines are

disabled

M/s Voith Hydro & M/s ABB Ltd. has intimatedthat our system is not designed for auto reclosingoperation due to generator constant.

131 Omkareshwar Power Station 220

Only Stage-1 overvoltage protection (110%-5 sec) is only provided, however whereas two stages of overvoltage protection is recommended by CBIP

The report of CPRI,i.e. third party has beenreceived and all settings of CPRI shall bereviewed in consultation with MPPTCL.


Line protection Main -1 & Main-2 are having distance protection.In such cases CBIP recommends for additional directional IDMT Earth Fault Relay

Yes

The Definite type of Directional Earth faultprotection function is configured in the relay REL511 and is in service.However,the case forreplacement of existing REL316 relay intoREL670 or equivalent is in progress.


Generator Protection back up Impedance Protection is provided with time delay of 3 sec, whereas,it is recommended the same may be 2 sec maximum

Complied

134 Omkareshwar Power Station 220 Most of the protection relays needed to be

tested regularly Complied

Updated status of rectification work of deficiencies under category A & B of Omkareshwar power Station

Sr.No.Name of Substation

identified for Protection Audit

S/S Voltage in

KVObservation of the Protection Audit

Deficiencies that can be corrected without procurement(Category-A)


No. of Defectsin Category A

AttendedYes/NO

Reason fornotattended


AttendedYes/NO


1 132KV Barwala 132 22/6/122 132KV Paliyad 132 19-20/6/123 220KV Dhasa 220 07/12/20124 220 KV Botad 220 17/7/20125 132KV Vallabhipur 132 21/6/126 220KV Otha 220 07/05/20127 220KV Savarkundla 220 16/7/20128 220KV Sagapara 220 07/06/20129 220KV Vartej 220 07/10/2012

10 220KV Anjar 220 22/11/201311 132 KV Samakhiyali 132 23/05/201212 220KV Shivlakha 220 26/12/201313 220 KV Kukma 220 25/12/201314 220KV Nakhatrana 220 20/12/201315 220KV Nanikhakhar 220 27/12/201316 220KV Tappar 220 23/12/201317 132KV Ankleshwar 132 24/9/1218 132KV Valia 132 23/8/1219 220KV Acchalia 220 29/9/1220 220 KV Wagra 220 09/06/201221 220KV Dahej 220 20/9/1222 220KV Kim 220 09/05/201223 220KV Zagadia 220 22/9/1224 220KV Haldarwa 220 09/07/201225 132KV Bharuch 132 18/9/1226 132KV Wankaner 132 14/02/201427 220KV Lalpar 132 02/07/201428 132KV Jasdan 132 15/02/201429 132KV Dhrol 132 02/04/201430 220KV Gondal 220 22/02/201431 132KV Vajdi 132 03/05/201432 220KV Nyara 220 26/02/201433 132KV Vikram 132 02/07/201434 220KV Morbi 220 02/05/2014

Format for Protection AuditName of Utility: Gujarat Energy Transmission Corporation Ltd.

Sr.No.

Name of CircleName of the Substationidentified for audit

S/SVoltage

(KV)

Date on which auditconducted/completed

Observations ofProtection Audit

Remark(Defect)

Deficiences that involves procurment(Category B)

Amreli

Circle/ substaionwise

observation reportenclosed herewith.

NA

No. of Defects:-77Attended(nos.):-77Pending(nos.):- 0

Anjar



NA


Nil NA

NANil9797

Bharuch



NA


Gondal



NA


NANil

NANil7878

Deficiences that can becorrected without procurment

(Category A)

77 77

35 35


AttendedYes/NO



AttendedYes/NO


Sr.No.


S/SVoltage

(KV)



Remark(Defect)



(Category A)

35 132KV Idar 132 19/6/1236 132KV Visanagar 132 20/6/12

06/10/201206/10/2012

39 220KV Bhutiya 220 27/6/1240 220KV Jamla 220 30/6/1241 220KV Vijapur 220 22/6/1242 220KV Dhansura 220 07/04/201243 132KV Talod 132 23/6/1243 132 KV Tilakwada 132 30/4/1344 132 KV Vasedi 132 05/03/201345 220KV Godhra 220 22/5/1346 132KV Dahod 132 05/07/201347 220KV Jambuva 220 24/05/201348 220KV Chandrapura 220 24/5/1349 220KV Gavasad 220 25-6-201350 132KV Gotri 132 07/02/201351 220KV Waghodia 220 30/6/201352 132KV J' Nagar 132 31-6-201353 132KV F"Nagar 132 06/11/201354 132KV Karjan 132 07/03/201355 132KV Manjusar 132 30-6-201356 132 KV Limkheda 132 06/02/201357 132KV Nandesari 132 07/04/201357 220KV Ranavav 220 20/02/201458 132KV Bhatia 132 21/02/201459 220KV Jamnagar 220 14/02/201460 132KV Khambhalia 132 14/02/201461 132KV Naghedi 132 14/02/2014

38 220KV Agiyol 220


28 28 Nil

Himmatnagar



NA


Jambuva



NA

No. of Defects:-125Attended(nos.):-125

Pending(nos.):-

Jamnagar



NA

93 93

NA

Nil NA

125 125 Nil NA


AttendedYes/NO



AttendedYes/NO


Sr.No.


S/SVoltage

(KV)



Remark(Defect)



(Category A)

62 132 KV Bhayavadar 132 18/8/1263 132KV Junagadh 132 09/07/201264 220KV Keshod 220 09/08/201265 132 KV Dhoraji 132 22/8/1266 220KV Motipaneli 220 24/08/201267 220KV Sardargadh 220 09/07/201268 220KV Visavadar 220 25/6/1269 132KV Haripur 132 26/6/1270 132KV Talala 132 27/6/1271 220KV Timbdi 220 07/02/201272 220 KV Kansari(Dhokalva) 220 07/04/201273 132 KV Patan 132 12/02/201374 132 KV Siddhpur 132 27/11/201375 220KV Kheralu 220 26/12/201376 220KV Sankhari 220 29/11/201377 220KV Chhatral 220 21/11/201378 220KV Mehsana 220 21/12/201379 220KV Mitha 220 12/10/201380 132 KV Sabarmati 132 05/12/201281 220KV Salejada 220 30/5/1282 132KV Ode 132 30/4/1283 132KV Undel 132 20/05/1284 220KV Kapadwanj 220 06/09/201285 220 KV Bhat 220 31/05/1286 132KV Narol 132 22/05/1287 132KV Chiloda 132 24/7/12

90 132KV Mahemdabad 13219/05/12,15/7/2012

91 220KV Khanpur 220 19/7/1292 132KV Nadiad 132 18/05/12

88 220KV Karamsad 220 29/4/12

89 220KV Ranasan 220

Junagadh



Mehsana



Nadiad

17/05/12


observationreport

enclosed herewith.

NA


Pending(nos.):-0

NA


NANo. of Defects:-41Attended(nos.):-41Pending(nos.):- 0

89 89 Nil NA

41 41 Nil NA

266 266 Nil NA


AttendedYes/NO



AttendedYes/NO


Sr.No.


S/SVoltage

(KV)



Remark(Defect)



(Category A)

93 220KV Bhilad 22094 220KV Talangpore 220 08/06/201395 220KV Ambheta 220 25/5/1396 132KV Atul 132 16/05/1297 132 KV Bhestan 132 06/10/201398 220KV Ichhapore 220 06/07/201399 220KV Mota 220 05/11/2013

100 220KV Navasari 220 22/5/13101 220KV Vapi 220 09/02/2013102 220KV VAV 220 05/09/2013103 220 KV Thavar 220 09/05/2012104 220KV Tharad 220 09/01/2012105 132 KV Deesa 132 09/06/2012106 220KV Deodar 220 09/11/2012107 220KV Jangral 220 25/8/12108 220KV Palanpur 220 22/8/12109 220KV Radhanpur 220 14/9/12110 220KV Agarthala 220 29/8/12111 132KV Dhandhuka 132 29/1/2013112 132KV Sitagadh 132 30/1/2013113 132KV DHANKDHRA 132 23/1/2013114 220KV Halvad 220 25/1/2013115 220KV Limbdi 220 31/1/2013116 220KV Viragam 220 28/02/2013117 220 KV DUDHREJ 220 02/02/2013118 220 KV RAJPAR 220 02/05/2013119 220 KV BALA 220 02/06/2013120 220 KV ADALSAR 220 23/01/2013121 220 KV DHANKI 220 03/05/2013


Pending(nos.):-0

Navsari



NA


Palanpur



NA


Surendranagar



NA120 120 Nil NA

90 90 Nil NA

52 52 Nil NA

Remarks

Yes /

No

Whether

attended

Yes/No

If not

attended,

reason

Yes /

No

Whether

attended

Yes/No

If no,

expected

date to

attend

400 KV

Khedamara

400/ 220

KV

NTPC/PGCIL &

CSPTCL

Engineers

19 - 20

Feb'13DC leakage to be monitored Yes Yes

220 KV

Bemetara

220/ 132

KV

CSPTCL

Engineers13.03.13

1. Carrier protection is not available..

2. 2nd DC battery set is not available.

3. GPS time synchronizing facility is not

available.

4. M II protection for 220 KV feeder not

available.

5. DC leakage to be monitored.

S.No.

5Yes -

Yes for

S.No.

1 to 4

No 31.10.16 -

220 KV Gurur220/ 132

KV

CSPTCL

Engineers12.03.13



available.

3.DC leakage to be monitored.

S.No.

3Yes -

Yes for

S.No.

1 & 2

No 31.10.16 -

220 KV Sohela220/ 132

KV

CSPTCL

Engineers22.03.13



available.


available.


S.No.

4Yes -

Yes for

S.No.

1 to 3

No 31.10.16 -

220 KV

Bhatapara

220/ 132

KV

CSPTCL

Engineers23.03.13




available.


available.


6. LBB protection not available.

S.No.

5Yes -

Yes for

S.No.

1 to 6

except 5

No 31.10.16 -

220 KV Mopka220/ 132

KV

CSPTCL

Engineers29.03.13




available.


available.



7. Synchronization trolly not available.

S.No.

5Yes -

Yes for

S.No.

1 to 7

except 5

No 31.10.16 -

PROTECTION AUDIT DEFFICIENCIES/OBSERVATIONS COMPLIANCE [As on 31.12.2015]

Name of Utility : CHHATTISGARH POWER TRANSMISSION COMPANY LIMITED

Observations of protection audit

Deficiencies that can be corrected

without procurement (Category-A)

Deficiencies involving procurement

(Category-B)

S/S

voltage

Name of 3rd

party protection

audit agency

Date on

which audit

conducted

Name of S/S

identified for

protection audit

Remarks

Yes /

No

Whether

attended

Yes/No

If not

attended,

reason

Yes /

No

Whether

attended

Yes/No

If no,

expected

date to

attend





(Category-B)

S/S

voltage

Name of 3rd

party protection

audit agency

Date on

which audit

conducted

Name of S/S

identified for

protection audit

220 KV Banari220/ 132

KV

CSPTCL

Engineers29.03.13




available.


available.



S.No.

5Yes -

Yes for

S.No.

1 to 6

except 5

No 31.10.16 -

220 KV Siltara220/ 132

KV

CSPTCL

Engineers01.03.13




available.


available.




S.No.

2&5 Yes -

Yes for

S.No.

1 & 3 to 7

No 31.10.162nd Battery set

commissioned.

220 KV Doma,

Raipur

220/132

KV

CSPTCL

Engineers22.03.13




available.


available.


S.No.

5Yes -

Yes for

S.No.

1 to 4

No 31.10.16 -

220 KV

Paraswani

220/132

KV

CSPTCL

Engineers29.03.13




available.


available.


S.No.

2&5Yes -

Yes for

S.No.

1,3& 4

No 31.10.15Second battery set

commissioned.

220 KV Urla220/ 132

KV

CSPTCL

Engineers23.03.13




available.


available.



S.No.

2&5Yes -

Yes for

S.No.

1,3,4& 6


commissioned.

Remarks

Yes /

No

Whether

attended

Yes/No

If not

attended,

reason

Yes /

No

Whether

attended

Yes/No

If no,

expected

date to

attend





(Category-B)

S/S

voltage

Name of 3rd

party protection

audit agency

Date on

which audit

conducted

Name of S/S

identified for

protection audit

220 KV

Thelkadih

220/132

KV

CSPTCL

Engineers




available.


available.


S.No.

2&5Yes -

Yes for

S.No.

1,3& 4


commissioned.

220 KV

Barsoor

220/132

KV

CSPTCL

Engineers07.03.13




available.


available.



S.No.

2&5Yes -

Yes for

S.No.

1 & 3,4& 6


commissioned.

220 KV Bhilai220/132

KV

CSPTCL

Engineers11.03.13

1. Carrier protection is not available.


available.



S.No.

3Yes -

Yes for

S.No.

1 to 4

except 3

No 31.10.16 -

220 KV

Kotmikala

220/ 132

KV

CSPTCL

Engineers05.04.13




available.


available.




S.No.

5Yes -

Yes for

S.No.

1 to 7

except 5

No 31.10.16 -

220 KV Raigarh220/ 132

KV

CSPTCL

Engineers20.03.13




available.


available.




S.No.

5Yes -

Yes

forS.No.

1 to 7

except 5

No 31.10.16 -

Remarks

Yes /

No

Whether

attended

Yes/No

If not

attended,

reason

Yes /

No

Whether

attended

Yes/No

If no,

expected

date to

attend





(Category-B)

S/S

voltage

Name of 3rd

party protection

audit agency

Date on

which audit

conducted

Name of S/S

identified for

protection audit

1. Separate two sets DC system is

recommended for switchyard protectionNo Yes

Estimate and Requisition

for separate DC source

has been sent for

approval.

2. Carrier Protection is out of service. Yes

Yes, for 220

kV Korba

East-West

I/C No. I&II

Rest feeder's

carrier prot.

ckt checked

& found

defiencies

For carrier protection

panel/cards

procurement required.

3. Disturbance Recorder and SERs are not

available.Yes

Tenders opened &

procurement under

progress.

4. Old THR make Static DPR relays needs to be

replaced by numerical relays No Yes NA NA

Numerical Relays

procured . Retrofitting

/commisioning will be

taken up soon.

5. Auto re-closer is not available. Yes No

Checking of

circuits under

progress.

Auto reclose of 220 KV

Korba-Budipadar ckt-3 is

checked & put in

service.In other feeders

A/R ckts is OK and will

be put in service afte

confirmation from other

end.

6. Bus Bar Differential scheme is not available. Yes

7. All relay settings are verified and found to

be generally in order.Yes Yes

8. Multiple Earthing is not found in CT

secondary.Yes Yes

9. PSB feature is Enabled for Z2, Z3, and Z4. Yes Yes

Name of Utility : CHHATTISGARH POWER GENERATION COMPANY LIMITED

M.K.Banchhor

CSPTCL,

N.P.Dewangan

NTPC,

N.K.Bizora

CSPGCL,

G.P.Rai

CSPGCL,

S.C.Chakrabort

y CSPGCL

25.04.2013220 KV KTPS,

Korba (E)220 KV

Remarks

Yes /

No

Whether

attended

Yes/No

If not

attended,

reason

Yes /

No

Whether

attended

Yes/No

If no,

expected

date to

attend





(Category-B)

S/S

voltage

Name of 3rd

party protection

audit agency

Date on

which audit

conducted

Name of S/S

identified for

protection audit

10. Synchronizing Panel is available for all

feeders except Budhipadar Feeder No-III for

that individual Synchronizing Trolley has

provided.

Yes Yes

1) Two independent source of 220 V DC are

available in Switchyard.No DC leakage

observed. YES YES

2) All relay settings are verified & found

generally in order.YES YES

3)Dual channel carrier protection is available

in all 220 KV feeders but kept out

YES No

Due to non

availability of

Panel at

remote end.

4) DRs are available in Numeric relays and SER

is available.YES YES

5)Multiple earthing of CT secondary core is

not available.CT secondary earthing is

provided in Panel only.YES YES

6) 01 no synchronising trolley is available & in

working condition.YES YES

7)PSB feature is enabled & in blocking

condition for Z2,Z3 & Z4.YES YES

8) Auto reclose is available but presently kept

out. YES No

As carrier

protection is

out.

9) Bus Bar differential scheme is available but

presently kept out. YES No

To be

checked

before put in

service

220 KV

DSPMTPS,

Korba

220 KV

Third Party

Protection

Audit was

carried out by

SE(ET&I-I)

HTPS,CSPGC

L,Representativ

e of

NTPC,EE,CSP

TCL,EE(Testin

g),DSPMTPS,

CSPGCL

25.04.2013

M.K.Banchhor

CSPTCL,

N.P.Dewangan

NTPC,

N.K.Bizora

CSPGCL,

G.P.Rai

CSPGCL,

S.C.Chakrabort

y CSPGCL

25.04.2013220 KV KTPS,

Korba (E)220 KV

Remarks

Yes /

No

Whether

attended

Yes/No

If not

attended,

reason

Yes /

No

Whether

attended

Yes/No

If no,

expected

date to

attend





(Category-B)

S/S

voltage

Name of 3rd

party protection

audit agency

Date on

which audit

conducted

Name of S/S

identified for

protection audit

1) Non availability of Main-II protection

Yes

2) Non availability of Auto reclose scheme.

Yes

3) Non availability of B/B differential & LBB

protection

Yes No 31.03.2016

Bus Bar protection panel

has been installed &

laying of cables is in

progress.

4)GPS is available however no relay is

synchronised with it.Yes YES 31.05.2014

Relays have been

synchronised with new

GPS.

5) Replacement of ABCB with SF6 breakers &

commissioning of isolator sequential

operation with ABCB opening.

Yes No 31.03.2017

Replacement of ABCB

with SF6 breakers is

included in the scope of

work of R&M of station

proposed in year 2016-

17

ABB Make Relay &

control panels equipped

with Main-I & Main-II

protection and Auto

reclose of feeders have

been commissioned.

Korba West TPS 400 KVNTPC & CSPTCL

Engineers26.04.2013

Remarks

Yes /

No

Whether

attended

Yes/No

If not

attended,

reason

Yes /

No

Whether

attended

Yes/No

If no,

expected

date to

attend





(Category-B)

S/S

voltage

Name of 3rd

party protection

audit agency

Date on

which audit

conducted

Name of S/S

identified for

protection audit

1) Second DC system is recommended .

Yes No 31.03.2017Proposed in the year 16-

17 in Refurbish Scheme.

2) To renovate/retrofit Main-I & Main-II

Protection with numeric relays in all out going

feeders.Yes

Main-I & Main-II

Protection with numeric

relays in all out going

feeders completed on

28.12.2014

3) Carrier Protection is not in service.

02 no. have

been

commission

ed in KEB-

KWB inter

connectors

Yes No 31.03.2016

In KEB-KWB

interconnector I & II

carrier protection has

been taken in service.In

KW-DSPM I/C,action

from DSPM is

awaited.Other 3 feeders

falls under CSPTCL scope

4) Disturbance Recoder and SER s are not

available.

Yes No 31.03.2016

Bay control panels for

SCADA system have

been received .M/s ABB

is being persuaded to

commission the same as

early as possible.

5) Non availability of Auto reclose scheme.

Yes No 31.03.2016

Scheme is ready from

KWB end,waiting for

consent for connected

sub stations.

6) Non availability of B/B differential

Yes No 31.03.2016 Work under progress.


Engineers26.04.2013

Remarks

Yes /

No

Whether

attended

Yes/No

If not

attended,

reason

Yes /

No

Whether

attended

Yes/No

If no,

expected

date to

attend





(Category-B)

S/S

voltage

Name of 3rd

party protection

audit agency

Date on

which audit

conducted

Name of S/S

identified for

protection audit

7) Non availability of LBB protection

Yes YESLBB has been kept in

service

8)GPS is available however no relay is

synchronised with it.

Yes No 31.03.2016

After commissioning of

SCADA panel, Relays will

be synchronised.GPS

facility is available in

SCADA.


Engineers26.04.2013

Name of Utility

Name of S/Sidentified forprotection Audit

S/Svoltage(kV)

Name of ThirdPartyProtectionAudit Agency

Date onwhich AuditConducted Observations of protection Audit

Yes/No


If notattended,reason

Yes/No WhetherattendedYes/No

If notattended, reason

Seoni 765 PGCIL WR-II,WRLDC

12.01.13 NIL NA NA NA NA NA NA NA

Wardha 765 MSETCL,WRLDC

17.04.13 For any modified relay settingsrevision received from corporate/ RHQ should be maintained inseparate register.

Yes Yes NA NA NA NA NA Attended

Bilaspur 765 MPEB, WRLDC 15.04.13220 V Battery Charger Voltage onhigher side. Yes Yes NA NA NA NA NA Attended

Pune 400 PGCIL WR-II,WRLDC

28.01.13400Kv Main-II Busbar protectionout of service. Yes Yes NA NA NA NA NA

Solapur 400 MSETCL,WRLDC


Parli 400MSETCL,WRLD

C 16.04.13 Broken conductor alarm may beadopted in MSETCL Parli lines.


Bhadrawati 400 PGCIL WR-II,WRLDC


Bhatapara 400 PGCIL WR-II,WRLDC

04.02.131 nos. Display of REL 670 notworking Yes Yes NA NA NA NA NA Attended

Raigarh 400 PGCIL ER-II,WRLDC

07.12.12

a)390 KV LA of Bus Reactor to bereplaced by 336KV.b)Repairs of NRV of Jockey pumpcarried out.


Mapusa 400 MSETCL,WRLDC


Boisar 400 PGCIL WR-II,WRLDC


Raipur 400PGCIL WR-II,

WRLDC 06.02.13

a)Some of ICT/Reactor protectionare staic type may be replaced byNumerical relay. b)In 400KVWardha-1 & 2 Main2 relay T-cordtime found 0.04sec and reversezone time found 1.0 sec.


FORMAT FOR PROTECTION AUDIT DEFICIENCIES/OBSERVATIONS COMPLIANCE Power Grid Corporation of India Ltd., Region -WR-I

Deficiencies that can becorrected without

procuremnet (Category A)

Deficiencies that can becorrected with procuremnet

(Category B)If not

tentativedate for

protectionaudit

Remarks

Summary Sheet of Protection Audit from WRTS II

Voltage Level Total no of S/s in Region - (A)Target Date of Completionof audit (D)

No of S/s where deficienciesdetected (E)

132kVwhereverapplicable220kV400kV 11 All completed 1

765kV 3 All completed 3HVDC S/sTotal 14 All completed 4

No of S/starget date of removal ofdeficiencies

No of S/starget date ofremoval ofdeficiencies

132kVwhereverapplicable

220kV

400kV

1. Shujalpur S/S - Rectification ofDG Set Auto Starting completed2. Dehgam S/s: - Non working ofMain II Relay of Ranchodpura 2Line of GETCO and Non TimeSynchronisation of Relays of allthe GETCO Lines

2

1. Shujalpur S/S -Rectification completed2. Dehgam S/s: - Nonworking of Relay ofRanchodpura has beenresolved. Non timesynchronisation issuetaken up with M/s GETCO

765kV

1. Bina S/s: - Earth Resistancewas measured during PeakSummer as mentioned in theProtection Audit Report2. Satna S/s: - DG Set Auto Startproblem has been rectified3. Gwalior S/s: - Commissioningof PLCC in 220kV Lines has beentaken up with M/s MPPTCL

3

1. For Satna & Bina S/s: -Matter resolved2. For Gwalior S/s: - PLCChas been commissionedby MPPTCL

HVDC S/s

Total ---

11 All completed

No of S/s identifiied for Protection Audit (B) No of S/s yet to be audited (C)

Not Applicable

Not Applicable

Voltage Level

Action Plan (on observation ofthird party protection audit)finaliztion date / target date forfinalizing plan (F)

Detail of S/s where no procurement isrequired for removal of deficiencies (G)

Detail of S/s whereprocurement is required (H) Reason / Remraks for

rectification of deficienciesrequiring period of morethan one year (I)

5 Not Applicable

3 All completedNot Applicable

14 All completed

Cost estimates for removal ofdeficiencies (J)

Not Applicable

Not Applicable

Not Applicable

Not Applicable

of 2

Name of the Organization: NTPC Limited-WR stations

Sr.No Deficiency Observed during BasicProtection Audit

Action taken / proposed to betaken

TimeSchedule

Name of the Sub-station / Switchyard: Vindhyachal STPP

1. Replacement of balance Staticdistance protection relays, withNumerical relays, in line withGazette notification of GOI for 400kV Satna 1 & 2 lines.

Completed Complied-Bcategory

2. 63 MVAR Bus reactor needs to betaken into service.

Put in service Complied-Bcategory

3. Main-I and Main-II Distanceprotection Schemes for all feedersneed to be different make/characteristic for 400 kV Sasan,Mahan, and Satna-III & IV lines.

Being adopted. Complied-Bcategory

4. Earth fault in 220 V switchyard DCsystem to be attended.

Ongoing routine activity Complied-Acategory

Name of the Sub-station / Switchyard: Korba STPP

1. Over voltage relay: Drop off to Pick upratio is not explicitly available inMicom relays.

Minimum Drop off / pick up ratioof 95% is available in MiComrelay and it is in order as far asover voltage protection isconcerned. With a very highreset/operate ratio, chatteringphenomena may be observed inrelay.

Complied-Acategory

2. Power swing blocking is enabled forZ2, Z3 and Z4. However de-blockingtimer is set at 2 sec. The same maybe reviewed.

Power swing blocking logic has tobe universally decided across thegrid. De-block timer of 2 sec hasbeen adopted in all NTPCstations and is in line with NRPC /ERPC recommended settingguideline.

Complied-Acategory

3. Auto re-close relay reclaim timer notuniform for all lines. Stage-I lines ishaving 10 secs and the same is 25secs for stage-II lines. This may bereviewed.

Reclaim time of 25secs to beadopted for all lines as per NTPCpractice.

Complied-Acategory

of 2

Sr.No Deficiency Observed during BasicProtection Audit

Action taken / proposed to betaken

TimeSchedule

4. Zone 2 time delay is different fordifferent lines (300ms and 400ms).The same may be reviewed.

As per NTPC practice, Zone-2time delay of 400ms is beingadopted & it is 500ms in case oflong lines followed by short lines.The same to be adopted.

Complied-Acategory

Name of the Sub-station / Switchyard: Sipat STPP

1. Time Synchronization: All numericalrelays except 5 nos relays of 765KVand 4 nos of relays of 400KV are timesynchronized.

Taken up with OEM. Only 01relay could be synchronized withGPS successfully.

Complied-Bcategory

2. Time setting of both Stage-I andStage-2 are same in all 765KV and400KV LBB relays.

The setting has been reviewedand found in order.

Complied-Acategory

3. Over voltage relay: Drop off to Pick upratio is not explicitly available inMicom relays.

Minimum Drop off / pick up ratioof 95% is available in MiComrelay and it is in order as far asover voltage protection isconcerned. With a very highreset/operate ratio, chatteringphenomena may be observed inrelay.

Complied-Acategory

4. Power swing blocking is enabled forZ2, Z3 and Z4. However de-blockingtimer is set at 2 sec. The same maybe reviewed.

Power swing blocking logic has tobe universally decided across thegrid. De-block timer of 2 sec hasbeen adopted in all NTPCstations and is in line with NRPC /ERPC recommended settingguideline.

Complied-Acategory

Name of the Sub-station / Switchyard: Jhanor Gandhar GPS

1. Replacement of existing static relaysfor line protection with Numericaldistance relays.

PO placed. Complied-Bcategory

present status of protection audit deficiencies (a & b...

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