Agenda Items for 5th State Operation Coordination Committee meeting to be held at GETRI, Vadodara on 31.10.13 at 02:30 PM

Point No. 1: Confirmation of the minutes of 4th State OCC meeting held on 11.05.13 at

APL, Mundra. Point No. 2: (i) Brief on system performance during May – October 2013. (ii) Brief on outcome of important meetings at OCC, RPC and NPC level. (iii) Brief on Draft Regulation by Hon’ble CERC on Deviation Settlement Mechanism and GEGC issued by Hon’ble GERC. Point No. 3: Anticipated system power scenario Nov 2013 – Mar 2014.

Point No. 4: Initiatives taken by SLDC during last six months to enhance system reliability and security.

Point No. 5: Actions required for enhancing grid reliability & security.

o Provision of Black Start DG set at DGBPS, UGBPS and GSEG.

o Brief about guideline for occurrence reporting: (Flash report / Detailed

report):

o Interconnection between 1st and 2nd Stages at GSEG, Hazira. o Status of providing 125 MVAR bus reactor at EPGL switchyard o Need of SPS in case of non-availability of both 400 KV S/C Hadala-Jetpur

and 400 KV S/C Hadala-Chorania lines o Commissioning work for 2nd 220 KV ALTPS-KLTPS line o Formulation / Review of various islanding schemes in the State

o Confirmation of SPS at APL, EPGL, CGPL & Various locations at GETCO o Confirmation of RGMO for identified units o Status of transmission elements (Thermo vision scanning) by GETCO.

Point No. 6: Confirmation of Unit outage planning for the period Nov 2013 to Mar 2014.

Point No. 7: Implementation of ADMS.

Point No. 8: Any other item with the permission of Chair. Point No. 9: Date and venue of 6th SOCC meeting.

Agenda Point No. 1

Confirmation of the minutes of 4rd

State OCC meeting held on 11.05.13 at APL, Mundra.

The minutes of 4th State OCC meeting held on 11.05.13 at APL, Mundra was forwarded to the

members vide letter No. SLDC/CE/MIS/4th

SOCC Mtg-APL-110513/2070 dated 25.06.13.

No comments have been received so far. Compliance of points / Actions taken as per 4th SOCC MoM:

a) Installation of breaker between Phase-1 and Phase-2 at SLPP: The work is completed.

The Committee shall confirm the minutes.

Agenda Point No. 2

I. Brief on system performance during May-12 to Sept-13.

1. Monthly Maximum Catered:

2. Monthly Energy Generation in MUs:

3. Monthly wind energy in MUs:

4. Monthly Maximum wind & solar power injection in Grid:

5. Month wise Category wise energy supplied in MUs:

2012 -13 2013 -14 2012 -13 2013 -14 2012 -13 2013 -14 2012 -13 2013 -14 2012 -13 2013 -14

APR 923 944 1056 1057 1789 1772 1867 2148 5635 5921

MAY 956 1015 1134 1182 1691 1783 2009 2261 5790 6240

JUN 872 898 1092 1081 1457 984 1994 2165 5416 5128

JUL 900 907 1079 1042 1395 473 2062 2338 5436 4761

AUG 888 915 1017 1019 1485 682 1973 2348 5364 4963

SEP 865 901 1002 1061 825 1523 1969 2295 4661 5780

Total 5405 5580 6379 6442 8641 7217 11876 13554 32302 32793

% rise 3 1 -16 14 2

Month JGY MUs URB MUs AGR MUs IND MUs TOTAL

6. Month wise Discom wise energy supplied in MUs:

2012 -13 2013 -14 2012 -13 2013 -14 2012 -13 2013 -14 2012 -13 2013 -14 2012 -13 2013 -14 2012 -13 2013 -14

APR 1997 2030 1586 1642 849 843 1203 1407 289 297 616 632

MAY 1980 2039 1623 1768 909 942 1278 1491 305 304 688 727

JUN 1950 1698 1430 1330 840 788 1196 1313 300 285 671 694

JUL 2055 1582 1343 1002 814 769 1224 1407 306 302 676 652

AUG 2122 1727 1256 1013 789 773 1198 1450 291 292 620 629

SEP 1703 2157 1053 1389 748 823 1157 1410 278 290 609 660

Total 11807 11234 8290 8145 4949 4938 7256 8476 1770 1770 3882 3994

% rise -4.9 -1.7 -0.2 16.8 0.0 2.9

Month PGVCL UGVCL MGVCL DGVCL SE CO AE CO

7. Skewed Power flow Scenarios of Gujarat system:

A. System Condition-1 (08-09-13 at 23:30 Hrs)

Gujarat Demand: 10916 MW

PGVCL Demand: 3785 MW

CGPL Gen; 3009 MW

EPGL Gen: 1028 MW

Wind Gen: 81 MW

Severe over loading on Jetpur / Amreli ICTs in range of 270 to 290 MW. Planned isolation of network of Rajkot / Jetpur / Amreli / Vartej area in order to

avoid major grid disturbance in case of contingency. Local generation in Saurashtra pocket such as GPPC Pipavav would have helped

to a great extent in absence of wind generation. Additional 400/220 KV ICTs have been planned at Jetpur / Amreli by GETCO &

expected to be commissioned by June-14. B. System Condition-2 (20-09-13 at 15:10 Hrs) Gujarat Demand: 12607 MW PGVCL Demand: 4086 MW CGPL Gen; 2155 MW EPGL Gen: 471 MW Wind Gen: 1011 MW No serious constraint in the saurashtra network. In absence of GIPCL at 132 KV, constraint in upstream network for Baroda city. Therefore, GIPCL costlier generation was kept on bar. If wind generation is low, then constraint at Jetpur & Amreli transformer capacity.

II. Brief on outcome of important meetings at OCC, RPC and NPC level:

1. NPC meeting:

The second meeting of NPC took place on 16th July, 2013 wherein it was decided that AUFLS scheme with 4 stages of frequency viz. 49.20, 49.0, 48.8 and, 48.6 Hz shall be implemented in a maximum period of three months. It was decided that whenever there is an instance of tripping of multiple critical transmission / generation elements in the grid, it should be got investigated and analyzed on immediate basis and remedial action should also be taken in a time bound manner under intimation to NPC secretariat / Grid management Division of CEA.

2. WRPC meeting: The 23rd WRPC meeting was held on 12.06.13 wherein following matters related to grid operation were discussed: Scheduling of Kawas and Gandhar gas stations of NTPC: It was decided that NTPC shall be allowed to divert / surrender the unutilized gas allocated to the above stations to other NTPC stations in the country after receipt of requisitions from beneficiaries and finalization of schedules on “Day ahead basis”. SPS at CGPL:

WRPC suggested that instead of tripping of coal mills, one 800 MW unit should be tripped for the grid conditions envisaged by RLDC / SLDC, since the generation reduction through tripping of coal mills would be slow and conditions specified by WRLDC / SLDC would demand instant reduction in generation at CGPL, so that aggravating congestion could be arrested.

During 450th OCC meeting held on 12.08.13, M/s CGPL informed that SPS has been made operational on 2nd Aug’13. SLDC, GETCO stated that the SPS implemented by CGPL executes backing down in place of unit tripping envisaged in the scheme. OCC advised CGPL to implement tripping of unit at CGPL as envisaged in the scheme. CGPL agreed to implement the same.

Proposal for Sugen Islanding Scheme:

WRPC suggested that a small group consisting representatives from WRLDC, SLDC- GETCO, GETCO and Torrent Power would be formed to look into the details of the scheme and come out with its finding.

3. OCC meetings of WRPC:

Shutdown of ISGS units under RSD (reserve shutdown) during low regional demand:

In 449th OCC meeting of WRPC on 15.07.13, SLDC-Gujarat raised point that during rainy season, regional demand drop of around 30% is observed especially during night hours. The integration of renewable energy injection also becomes a challenging job for load dispatcher. In spite of shutting down State generating units and reducing share of ISGS units, under drawl of the State would remain around 500 MW due to high wind injection.

In such condition, it is extremely difficult for SLDC to curb under drawl especially during night hours. At that time, RLDC should coordinate in the matter and extend all possible support to SLDC to contain under drawl of the State by shutting down of Central Sector (ISGS) units at least for a few days considering network security and merit order at Regional level. In the meeting, GM, WRLDC stated that if all the beneficiaries agree and consent has been given by all the beneficiaries at least for 72 Hrs. then proposal would be accepted for putting Central Sector unit under RSD.

Special Protection Scheme (SPS) for Gwalior-Agra D/C lines - requirement of backing down in western region: In 449th OCC meeting of WRPC on 15.07.13, it was discussed that backing down to the tune of 500 MW is required in WR when the power flow on Agra-Gwalior ckts I & II exceeds 1500 MW. The 500 MW backing down is to be distributed in following generating stations:

1. Korba STPS: 120 MW 2. Vindhyachal STPS: 196 MW 3. CGPL, Mundra: 184 MW

It was decided that all concerned shall initiate action in implementation of SPS within 3 month’s time. Defense Mechanism for High Frequency:

As per the decision in the 22nd WRPC meeting held on 26.2.2013, the following units were identified to help arresting the rise of frequency in case of islanding of Western Region from rest of the NEW grid.

1. KSTPS-7 (500MW) 2. VSTPS-7 (500MW) 3. CGPL-10 (830MW) In 450th OCC meeting on 12.08.13, NTPC informed that administrative approval is given by their Corporate Office and Scheme will be implemented in a month’s time. CGPL informed that they are ready to back down the required generation instead of tripping of one unit. In reply, Member Secretary reiterated that the response time of backing down generation is slower than tripping the unit and therefore requested CGPL to stick to the decision taken in 22nd WRPC meeting to trip the unit.

Special Protection Scheme for Essar Steel:

Essar Steel is connected to the grid through 400kV Jhanor- Essar Hazira D/C lines and two 400/220 kV, 500 MVA ICTs. At present, the import TTC for Essar Steel is fixed at 500 MW. Till the third ICT at Essar Steel is commissioned, the following SPS is required to be implemented at Essar Steel. a. Whenever one ICT trips, and if the total load drawn by Essar Steel is 500 MW, the

SPS shall trip at least 100 MW load at Essar Steel to prevent tripping of other ICT on over load.

b. Whenever one 400 kV Jhanor - Hazira line trips and if Essar Steel load is > 500 MW, at least 150 MW load shall trip at Essar Steel to take care of ‘N-1’ contingency of other Jhanor-Hazira tripping which may increase load on Jhanor-Sugen-Vapi.

Member Secretary of WRPC expressed that a separate meeting would be called.

4. Special meeting of WRPC: Proposal for KAPP Islanding Scheme:

A special meeting was held on 03.09.13 to discuss formulation of islanding scheme for KAPP. In the meeting, it was decided that the scheme has to be formulated by GETCO & KAPS and get it vetted by WRPC PCM. In this regard, a meeting was held on 08.10.13 at SLDC. Islanding scheme for KAPP is formulated and sent to RLDC for review and suggestion, if any. Sugen Islanding: Islanding scheme for Sugen was discussed during the meeting held on 03.09.13. It was decided that 220 kV D/C Kim – Sugen may be opened at higher frequency 48.2 Hz as a preparation to islanding and PLC based load trimming is to be implemented to match generation at Sugen. Sugen has to modify the islanding scheme. Revised scheme will be prepared by Sugen. Same will be sent to RLDC for further deliberation.

III. Brief on Draft Regulation by Hon’ble CERC on Deviation Settlement Mechanism and GEGC issued by Hon’ble GERC. Hon’ble CERC published draft on deviation settlement mechanism on its website. The objectives of the regulation are: To drive distribution utilities to go for planned procurement of electricity and creating

an environment for investors to set up new power plants and not to rely upon over-drawal from the grid for meeting their consumer demands.

Due to integration of regional grids, the economic cost of grid failures is too high and grid failures should be avoided at all costs.

To enforce strict volume limits on over drawal / under drawal and over-injection/under-injection irrespective of the grid frequency.

It will replace existing UI regulation.

It will restrict deviation volume both side (Under drawl / Over injection and Over drawl / Under injection).

Proposed Frequency band is from 49.95 to 50.05 Hz with step of 0.01 Hz.

Each of the regional entity such as generating station, beneficiary, buyer or the seller shall have to make their sign of deviation from schedule changed, at least once in every 6 time blocks.

SLDC had submitted following comments on draft regulation:

Frequency band should be 49.80 Hz to 50.10 Hz.

Under drawl of beneficiary or buyer / over injection of generator or seller shall be penalized with a token amount irrespective of quantum when frequency is above 50.10 Hz. It would support the system to maintain system voltage within the range specified in IEGC.

Deviation limits at State periphery should be enhanced to at least 5 % of their demand when frequency remains in the range of 49.80 Hz to 50.10 Hz (Proposed by SLDC-Gujarat) and there is no system constraint at inter state or inter regional level.

Enhancing UI limits will also reduce frequent up / down regulation and start / stop of generating units, thereby reducing wear and tear of units.

Hon’ble GERC published Gujarat Electricity Grid Code regulation-2013. It is applicable to Gujarat grid only. It came into force w. e. f 16.07.13. There are 11 sections in the code.

All members are requested to go through the same.

Agenda Point No. 3

Anticipated Gujarat Power System Scenario:

Nov-13 Dec-13 Jan-14 Feb-14 Mar-14

Sr.

No.

1 Max Catered during year 2012-2013 11566 11295 10780 10983 11909

2 Anticipating % rise in Max catered 8 8 8 8 8

3 Final peak demand Anticipation 12500 12200 11750 11900 12900

4 GSECL Availability 3865 3865 3865 3865 3865

5 Private 5300 5300 5300 5300 5300

6 C.S 3940 3940 3940 3940 3940

Availability from Conventional generator (4+5+6) 13105 13105 13105 13105 13105

7 WE injection Average 275 550 450 450 450

8 Solar 500 500 500 500 500

Availability from renewable (7+8) 775 1050 950 950 950

9 Gen from New generator

10 Total Availability Sr. No. (4+5+6+7+8+9) 13880 14155 14055 14055 14055

11 Forced outage (GSECL + Private) 750 750 750 750 750

12 Margin for Planned outage Sr. No. (10-3-11) 630 1205 1555 1405 405

13 Asper outage finalized for the Year 2013-14 415 630 530 1147 542

14 Peak deficit (-) /Surplus(+) 215 575 1025 259 -137 The difference between maximum demand and minimum demand in a day would remain around 2200-2500 MW in the month of Dec-13 to Mar-14. Dec-13 onwards, the daily variation in wind energy injection would remain around 1000 to 1300 MW. In ensuing months, critical loading may be observed on following elements:

i. 400 KV D/C APL-Dehgam line

ii. 400 KV D/C CGPL-Chorania line

iii. 400 KV D/C CGPL-Bhachau line

iv. 400 KV S/C Chorania – Hadala line

v. 400 KV S/C Chorania-Kasor line

vi. 220 KV Jetpur-Gondal line

vii. 220 KV D/C Amreli-Savarkundla line

viii. 220 KV Chorania-Salejada line

ix. 220 KV D/C Haldarva-Jhanor line

x. 220 KV D/C Ukai-Mota line

xi. 220 KV D/C KAPP-Vapi line

xii. 220 KV D/C Kawas-Ichhapore line

xiii. ICT’s at Asoj / Jetpur / Amreli / Kosamba / Vapi (PG)

It would be very difficult to permit the outages on these elements.

Agenda Point No. 4 Initiatives taken by SLDC during last six months to enhance system reliability and security:

i. SLDC has initiated RE desk to accommodate real time weather data of the State and forecast from the various reliable sources / tools and prepare anticipated variation for wind / Solar generation as well as load for same day, next day and for next 7 days with corrective update cycle of at least every 3 hours.

ii. Renewable Regulatory Fund (RRF) mechanism is implemented.

iii. 17 Nos. of RTUs were commissioned during last three months. Definitely, it helps to exercise monitoring and supervision of the system.

iv. LOI placed for installation & commissioning of PMUs. 25 locations are identified.

v. Joint survey with M/s Alstom for Up-gradation of SCADA and back up SLDC at Gandhinagar is over.

vi. ABT software development work is under progress. Documentation work for developing various modules is already finished.

vii. 400 KV, 125 MVAR Bus reactors are commissioned at Amreli, Varsana, Chorania, Hadala and Vadavi S/S. 400 KV, 63 MVAR bus reactor is commissioned at Jetpur S/S by GETCO. It helped extremely to control voltage during low load scenario. Switching operation of EHV lines (HV off) significantly reduced during last monsoon. It helped to make network available to great extent for mega generating stations.

viii. To enhance grid security, SPS (special protection scheme) is commissioned at Jetpur, Amreli, Asoj & Jambuva S/S to prevent over loading of ICTs. SPS in case of contingency of one circuit of 220 KV Ukai-Mota, 220 KV Amreli-Savarkundla & 220 KV Hadala-Nyara lines is commissioned.

ix. Islanding scheme for KAPS is framed and put up for WRPC approval.

x. Evaluation of islanding scheme for Sugen is under progress.

xi. Black start mock drill for Kawas NTPC unit with ichhapore S/S load is carried out successfully on 15.10.13.

xii. The preparatory meetings for black start mock drill for UHPS are over. Due to light

load conditions at Achhalia S/S, it could not be carried out. It is now planned during last week of Nov-13.

xiii. To avoid frequent tripping of 132 KV Lalpar- Wankaner, network topology change was proposed by SLDC. Same has been implemented by GETCO. As a result, 132 KV Lalpar - Wankaner line is directly connected to Dhrol S/S. As a result, no tripping has been observed on over load in new configuration.

xiv.To load 132 KV Karamsad – Gotri line, it was suggested to open 66 KV B/C at Gotri S/S. It has been implemented by GETCO during current month. As a result, the flow on this line is enhanced to around 25 MW.

Agenda Point No. 5

Actions required for enhancing grid reliability.

1. Provision of Black Start DG set at DGBPS, UGBPS and GSEG

During last SOCC, It was proposed that feasibility for utilization of DG sets available at old DTPS shall be explored as a black start source for Dhuvaran and Utran GBPS. The representative from GSEG Hazira informed that for black starting their GTG of Stage-1, at least 2000 KVA DG set will be required and also, OEM has to be referred in the matter. Vide email dated 24.05.13, GSEG Hazira informed that in response to their query, OEM responded that present 2 x 625 MVA DG set can not be utilized as black start source for their unit. SLDC informed that as per CEA regulation (Technical Standards for Electric Plants) 2010, gas based units having capacity less than 100 MW should have black start DG source. The committee may like to discuss progress in the matter.

2. Brief about guideline for occurrence reporting: (Flash report / Detailed report):

During last meeting, SLDC informed that as per IEGC-2010, SLDC has to report all the

occurrences to Regional Load Despatch Center in time. Timely and accurate reporting of

occurrence plays an important role in grid operation so that further actions such as load

rejection, generation regulation shall be taken up quickly to avoid further depletion of network.

Also, relays and indications on each panel at the time of tripping shall be reported accurately

for both ends so that it would be helpful to analyze cause of occurrence and to plan remedial

actions to avoid recurrence. In the meeting, it was briefly explained that three types of

reporting for any occurrence are required and explained which points are to be covered.

1) Orally: Immediately

Any occurrence shall be immediately reported orally to SLDC control room on telephone

/ Mobile or PLCC.

SLDC C/R Mobile No. (M) - 9879200620

P & T No. 0265 2352019, 2352103

PLCC No. 0131-25, 26

2) Preliminary report: Within few hours (06 to 12 Hrs.):

By E-mail message / Fax.

Email ID: 1. sldc.getco@gmail.com

2. oasldc.getco@gebmail.com

3) Detailed report within two to three days:

By E-mail message / Fax.

Email ID: 1. sldc.getco@gmail.com

2. oasldc.getco@gebmail.com

A good detailed report should cover detailed analysis of DR, EL and corrective actions have to

be taken to avoid recurrence.

All members are requested to share this information with their team so that SLDC will

receive good report in time.

3. Interconnection between 1st and 2nd Stages at GSEG, Hazira.

SLDC has requested many times that arrangement for interconnection between Stage-I and Stage-II at GSEG, Hazira has to be implemented at the earliest as it is purely the requirement of the system for improving the redundancy, reliability and operational flexibility. GETCO has shown willingness to extend all kind of support.

The committee may like to discuss progress in the matter.

4. Status of providing 125 MVAR bus reactor at EPGL switchyard:

During 3rd SOCC meeting, it was emphasized to keep aside the commercial issues and give

priority for installing and commissioning the bus reactor as it would ensure equipment safety at

EPGL end.

During 4th SOCC meeting, the point could not be raised as there was no representative from

M/s EPGL to offer comments in the matter.

The committee may like to discuss progress in the matter.

5. Need of SPS in case of non-availability of both 400 KV S/C Hadala-Jetpur and 400

KV S/C Hadala-Chorania lines:

When both EPGL units are on bar, the non-availability of both 400 KV S/C Hadala-Jetpur and

400 KV S/C Hadala-Chorania lines would lead to excessive over loading of ICTs at Hadala and

tripping of one ICT would lead to major black out in Saurashtra area. In order to avoid over

loading of ICTs under such condition, it is essential to trip one of the running units of EPGL.

The committee may like to discuss the matter.

6. Commissioning work for 2nd 220 KV ALTPS-KLTPS line:

On 06.08.13, GETCO Anjar had submitted estimate to ALTPS for stringing of last span near

ALTPS end and supply, erection & commissioning of PLCC system for 220 KV ALTPS -

KLTPS 2nd circuit. Till date, no response has been received. Hence, the work of commissioning

of 2nd 220 KV ALTPS – KLTPS line could not get materialized.

The committee may like to discuss progress in the matter.

7. Formulation / Review of various islanding schemes in the State:

Generally, tripping of generating unit on under frequency is set at 47.50 Hz. Last stage of

under frequency load shedding is now set at 48.60 Hz (earlier it was 48.20 Hz). Hence, there is

wide range of frequency margin (48.60 Hz to 47.50 Hz) available for formulation of island.

SLDC intends to formulate islanding schemes for various power stations or cluster of power

stations. There will be four stages for preparation of island.

1st Stage (48.60 Hz): Load shedding to match the load with generation from generating

station.

2nd Stage (48.40 Hz): Tripping of all other connectivity except connectivity with power

stations at grid substation which is identified for islanding operation.

3rd Stage (48.20 Hz): Tripping of all other connectivity except connectivity with load at

generating substation so as to form the island.

4th Stage (48.00 Hz): Load shedding in island if frequency further falls down in island.

SLDC is working on formulation of islanding scheme. Meanwhile, all are requested to comment

/ offer suggestions as per their generating unit characteristics.

The committee may like to discuss

8. Confirmation of SPS at APL, EPGL, CGPL & Various locations at GETCO:

M/s APL, EPGL and CGPL are requested to bring the current status of various SPS installed at

their premises.

CE (TR) GETCO is requested to bring current status of SPS installed / proposed at various

locations in GETCO transmission system.

o GETCO has informed that SPS are installed at Jetpur, Amreli, Asoj, Jambuva, Nyara,

and Savarkundla & Mota S/S.

o SLDC had earlier proposed SPS at Vapi & Bhilad S/S in case of contingency of 220 KV

S/C Chikhli–Vapi line or any one circuit of 220 KV D/C KAPP–Vapi line tripping.

9. Confirmation of RGMO for identified units:

In last SOCC meeting, it was decided that all RGMO eligible generators shall give self

certification for its availability and effective working every month to SLDC and WRLDC.

However, SLDC has not received such self certification from any RGMO eligible generators.

So, all RGMO eligible generators shall send self certification in the first week of every month.

The committee may like to discuss

10. Status of transmission elements (Thermo vision scanning) by GETCO.

Vide letter No. SLDC/CE/MIS/Hot line group/191013 dated 19/10/2013, all SE (TR), GETCO

were requested to assess the feasibility of deploying hot line group, who have been trained

especially to attend hot point, hot clamp, hot glow etc so that unnecessary outage of

transmission elements can be avoided.

The committee may like to discuss

Agenda Point No. 6:

Confirmation of Unit outage planning for the period Nov 2013 to Mar 2014.

The list of planned outage (As per planning) v/s actual availed / to be availed for the FY 13-14

is mentioned below:

Station IC in

MW

From

Date

To

Date

No. of

days

Work From

Date

To

Date

No. of

days

UTPS-1 120 1-Feb-14 7-Mar-14 35 AOH

UTPS-2 120 15-Sep-13 19-Oct-13 35 AOH

UTPS-3 200 1-Jul-13 30-Jul-13 30 AOH 10-Jul-13 30-Aug-13 52

UTPS-4 200 12-Mar-14 20-Apr-14 40 COH 27-May-13 21-Jun-13 26

UTPS-5 210 5-Aug-13 8-Sep-13 35 AOH 6-Sep-13 2-Oct-13 27

GTPS-1 120 30-Dec-13 28-Jan-14 30 AOH

GTPS-2 120 1-Nov-13 30-Nov-13 30 AOH

GTPS-3 210 30-Aug-13 28-Sep-13 30 AOH

GTPS-4 210 1-Jun-13 30-Jun-13 30 AOH 1-Jun-13 10-Jul-13 40

GTPS-5 210 15-Jul-13 23-Aug-13 40 COH 15-Jul-13 1-Sep-13 49

WTPS-1 210 21-Jul-13 19-Aug-13 30 AOH 1-Aug-13 21-Aug-13 21

WTPS-2 210 2-Feb-14 3-Mar-14 30 AOH

WTPS-3 210 1-Jan-14 30-Jan-14 30 AOH

WTPS-4 210 20-Jun-13 19-Jul-13 30 AOH 14-Jul-13 10-Aug-13 28

WTPS-5 210 16-May-13 14-Jun-13 30 AOH 1-Apr-13 1-May-13 31

WTPS-6 210 1-Dec-13 30-Dec-13 30 AOH 10-Jun-13 3-Jul-13 24

WTPS-7 210 26-Jul-13 3-Sep-13 40 COH 29-Aug-13 11-Oct-13 44

STPS-2 120 18-Jul-13 16-Aug-13 30 AOH

KLTPS-1 70 28-Jul-13 26-Aug-13 30 AOH 28-Jul-13 25-Aug-13 29

KLTPS-2 70 25-Jun-13 24-Jul-13 30 AOH 25-Jun-13 2-Aug-13 39

KLTPS-3 75 30-Aug-13 28-Sep-13 30 AOH 30-Aug-13 1-Oct-13 33

KLTPS-4 75 15-Nov-13 14-Dec-13 30 AOH

DGB-1 107 5-May-13 19-May-13 15 AOH

DGB-2 112 23-Dec-13 6-Jan-14 15 AOH

UGPP-II GT 375 1-May-13 7-May-13 7 AOH

UGPP-II GT 375 1-Mar-14 7-Mar-14 7 AOH

AECo F 110 3-Nov-13 11-Nov-13 9 Boiler annual maintenance

AECo D 120 14-Dec-13 1-Feb-14 50 Boiler annual maintenance, Second pass

replacement and turbine major O/H, Gen

RLA, CT Refurbishment work

AECo E 110 1-Jul-13 28-Sep-13 90 Turbine uprating & life extension activities 1-Jul-13 21-Oct-13 113

AECo C 60 2-Feb-14 10-Feb-14 9 Boiler annual maintenance

Outage approved

by SLDC

Actual Availled

Station IC in

MW

From

Date

To

Date

No. of

days

Work From

Date

To

Date

No. of

days

CLPIPL GT-11 138 23-Aug-13 26-Aug-13 4 Minor outage

CLPIPL GT-12 138 1-Sep-13 5-Sep-13 5 Minor outage

CLPIPL GT-13 138 27-Aug-13 31-Aug-13 5 Minor outage

CLPIPL STG 241 1-Aug-13 9-Sep-13 40 Major outage

SUGEN 10 382.5 12-Sep-13 18-Sep-13 7 R & M work

SUGEN 20 382.5 7-Feb-14 13-Feb-14 7 R & M work

SUGEN 30 382.5 16-Jun-13 22-Jun-13 7 R & M work

GSEG GT-12 52 11-Feb-14 28-Feb-14 18 COH

GSEG STG 52 11-Feb-14 10-Mar-14 28 COH

SLPP 1 125 1-Jun-13 25-Jun-13 25 AOH & ESP fields replacement 5-Apr-13 30-Apr-13 26

SLPP 2 125 5-Apr-13 29-Apr-13 25 AOH & Eco beam replacement work 1-Jun-13 30-Jun-13 30

SLPP 3 125 14-Jul-13 2-Aug-13 20 AOH 14-Jul-13 7-Aug-13 25

SLPP 4 125 22-Aug-13 10-Sep-13 20 AOH 12-Aug-13 6-Sep-13 26

GIPCL 1 GT1 32 15-Jul-13 24-Jul-13 10 HGP & HRSG Inspection 15-Jul-13 20-Jul-13 6

GIPCL 1 GT2 32 1-Sep-13 6-Sep-13 6 CI & HRSG Inspection 6-Sep-13 13-Sep-13 8

GIPCL 1 GT3 32 8-Sep-13 13-Sep-13 6 CI & water wash 31-Aug-13 6-Sep-13 7

GIPCL II GT-4& STG 165 28-Jul-13 23-Aug-13 27 HGPI, Water washing & HRSG inspection

ALTPS 1 125 1-Apr-13 30-Apr-13 30 AOH 31-May-13 18-Aug-13 80

ALTPS 2 125 1-May-13 31-May-13 31 AOH 10-Aug-13 20-Oct-13 72

EPGL-1 500 14-Aug-13 31-Aug-13 18 Boiler & turbine annual inspection

EPGL-2 500 11-Feb-14 28-Feb-14 18 Boiler & turbine annual inspection

ACBIL-1 100 1-May-13 15-May-13 15 AOH 18-Sep-13 7-Oct-13 20

ACBIL-2 100 1-Jun-13 15-Jun-13 15 AOH 22-Aug-13 12-Sep-13 22

CGPL-10 394 8-Apr-13 10-Apr-13 3 Instrumentation upgradation 20-May-13 6-Jun-13 18

CGPL-10 394 1-Dec-13 5-Jan-14 36 Boiler Overhauling

CGPL-20 394 1-Apr-13 6-Apr-13 6 PG test

CGPL-30 394 20-May-13 25-May-13 6 PG test 15-Apr-13 16-May-13 32

CGPL-40 394 12-Apr-13 2-May-13 21 PG test 12-Sep-13 19-Oct-13 38

CGPL-50 394 1-Jun-13 21-Jun-13 21 PG test

Outage approved

by SLDC

Actual Availled

The outage of CGPL-20 is given from 25.10.13 to 15.11.13 for generator transformer

inspection.

SLDC desires to know latest update for unit outage proposal for the period Nov-13 to Mar-14

during the meeting.

Also, vide letter No. SLDC/CE/MIS/Unit outage & Gen target 14-15/T-2690 Date: 03.10.2013, SLDC had requested unit wise schedule of planned maintenance, R& M to be carried out during 2014-15 and the unit wise yearly generation targets (with monthly breakup) for all generating units. SLDC received unit outage proposals from GSECL, SLPP, GIPCL, GSEG and CLPIPL. Other power station heads are requested to submit the same on or before 10.11.13 so as to enable SLDC for onward submission of the same to CEA, New Delhi and WRPC, Mumbai and to finalize unit outage schedule for the financial year 2014-15.

Agenda Point No. 7:

Implementation of ADMS

During last SOCC meeting, SLDC enquired on the latest update and course of action by all

DISCOMs for implementation of ADMS. SLDC informed that NLDC / WRLDC are continuously

monitoring unscheduled drawl of each State and not allowing over / under drawl by more than

150 MW. ADMS would definitely help to curb over drawl of DISCOMS especially when

frequency is below 49.80 Hz.

SLDC informed that for automatic load shedding under ADMS, following logics with ‘AND’

condition shall be featured in the scheme:

I. Average Frequency of block is below 49.80 Hz and there is downward trend of system

frequency.

II. State over drawl is more than 150 MW.

III. Particular DISCOM over drawl is more than 50 MW.

In this regard, all the four DISCOMs of GUVNL have identified the 66 KV feeders (G1 category

in each 220 KV S/S) but, further progress for implementation of ADMS has not taken place.

The committee may like to discuss progress in the matter.

Agenda point No. 8

Any other item with the permission of Chair

Agenda point No. 9

Date and venue of 6th SOCC meeting