micom p127

1

GRID

Krishnakumar Venkataraman

Simon Richards

12/03/2011

MiCOM P120 to P127 Range

Overcurrent Relays

Presentation title - 01/01/2010 - P 2

PlatformPlatformSelectorSelector

2


Selection Tips: MiCOM P12xy or P14x Feeder

YIndependent derived E/F and measured transformer Y-n Standby E/F in one device

YProgrammable curvesYDistance to fault requiredYA/R requires check synch, or sequence co-ordination

YBasic autoreclose with modest I/O countsYEthernet protocols IEC 61850 or DNP3 OE requiredYFull graphical programmable logic

YLogic functionality satisfied with 8 boolean equationsY> 250 event records or 5 disturbance traces

YI/O count no greater than 8o + 7i (12i for P127)YWith function keysY> 4 programmable LEDs

YSmall case size 20TE or 30TEYWithdrawable devicesYSimple overcurrent and earth fault applications

MiCOM AlstomP14x Preferable

P12xy Series Preferable


OverviewOverview

3

- - P 5

Non-Directional RelaysMiCOM P120, P121, P122 & P123

P120: Earth fault or Single phase O/C

P121: Basic 3 phase + Earth O/C

P122: 3 phase + Earth O/C

P123: 3 phase + Earth O/C + Autoreclose


P125: Directional / Non Directional Single PhaseAnd Earth Fault Protection

MiCOM P125, P126 & P127Directional Relays

P125: Single phase Overcurrent / earth fault & directional earth fault protection

4


P126: Three phase Overcurrent & directional/non directional earth fault protection

P127: Directional / non directional three-phase Overcurrent & directional /non directional earth fault protection

MiCOM P125, P126 & P127Directional Relays


P120-P127 Range: Protection Features

5


P120-P127 Range: Control, Logic and Events


NonNon--DirectionalDirectionalApplicationsApplications

6

- - P 11

97 7811.6

158168

99

Panel cut-out Flush mountingfixing details

All dimensionsin mm.

4 holes / 4.4 (M4 screw)O

25.1 226

151.2 max.Alarme C

P121MiCOM

IA = 214.50 A

103

177

Trip

Auxiliarysupply

Equip. fail

AUX. 1

AUX. 3

AUX. 2

AUX. 4

24.6 52

4 holes / 3.4O

MiCOM P120 – P123 Range Housing(20TE)

- - P 12

51

52 RL1 TripProgrammableLogic inputs

Phase orearth CT

P120

RS 485

Busbar

50

51N 50N

L 1

RL 2RL 3RL 4

Supervisionsystem

Uaux

L 2

ProgrammableLogic outputs

86

RL0 Watchdog

MiCOM P120: Single Line Diagram

7

- - P 13

51

52 RL1 TripProgrammableLogic inputs

Earth CT

P121

RS 485

Busbar

50

51N 50N

L 1

RL 2RL 3RL 4

Supervisionsystem

Uaux

Phase CTs 3

L 2


86

RL0 Watchdog


- - P 14

52 RL1 Trip

RL0

ProgrammableLogic inputs

Earth CT

P122

RS 485

Busbar

L 1

L 3

RL 2RL 3RL 4

Supervisionsystem

Uaux

Phase CTs 3

L 2

RS 232 Front panel PC

RL 5RL 6


Watchdog

51 50

51N 50N

46

37 49

50BF 86


8

- - P 15

MiCOM P123 : Single Line Diagram

51

52 RL1 Trip

RL0

ProgrammableLogic inputs


Earth CT

P123

RS 485

Busbar

50

51N 50N

L 1

L 3

RL 2RL 3RL 4

Supervision systemUaux

Phase CTs 3

L 2

46 RS 232

Front panel PC

RL 5RL 6

L 4L 5

RL 7RL 8

37 49

79

50BF 86

Watchdog


DirectionalDirectionalApplicationsApplications

9


MICOM Case with MIDOS terminals

P125 CASE:− 4U height (177 mm)− 272 mm depth− 20 TE width (102.8mm)

P126 & P127 CASE:− 4U height (177 mm)− 272 mm depth− 30 TE width (154.2mm)

MiCOM P125 P126 & P127Housing


Busbar

52

ResidualVT

SupervisionSystem

Uaux

Logic inputs

Setting/ControlSoftware

67N

Trip

59N

86

32N

P125L1L2L3L4

Logic outputs

Watch Dog

RL 4RL 5RL 6

RL 1RL 2RL 3

RS 232

RS 485

MiCOM P125

Earth CT

10


52

ResidualVT

SupervisionSystem

UauxSetting/ControlSoftware

67N

Trip 59N

8632N

P126

Earth CT

Logic outputs

Watch Dog

RL 4RL 5RL 6

RL 1RL 2RL 3

RS 232

RS 485

Phase CTs 50

51

Logic inputs

L1L2L3L4

49

L5L6L7

RL 8RL 7

46

37

50BF

TCS

79

46BC

50N51N

Busbar

SOTF

MiCOM P126


Setting/ControlSoftware

Busbar

Uaux

Trip

Earth CT

Phase CTs

SupervisionSystem

67N

59N

8632N

P127

Logic outputs

Watch Dog

RL 4RL 5RL 6

RL 1RL 2RL 3

RS 232

RS 485

5051

Logic inputs

L1L2L3L4

49 L5L6L7

RL 8RL 7

46

37

50BF

TCS

79 46BC

50N51N67

SOTF

52

MiCOM P127

11

- - P 21

Five additional opto-inputs− In addition to existing seven opto-inputs, five digital inputs are

now available (Input 8, 9, A, B, C)− 12 opto-inputs in total

− Benefits :• Increase number hardwired digital information• No need to use extra I/O box

P127 Hardware Option

- - P 22

− In addition to existing RS485 port for digital control system communication, a 2nd RS485 port is now available to perform remote maintenance in Modbus:

• Settings modification• Records upload (25 fault, 250 events & 5 disturbance)• Measurements upload• Remote command via MiCOM S1

− Benefits :• Speed up post fault analysis • Minimize power system outage• Separate network fault analysis from real time process• Multi drop connection to centralize maintenance record in a single

PC

P127 Option:Additional 2nd RS485 for remote maintenance

Digital Control System

Maintenance PC

IEC103 or Modbus or

DNP3Modbus

only

RS485 n°1RS485 n°2

12

- - P 23

− To ensure an accurate time stamping of P127 records, IRIG-B time synchronization from via GPS clock is now supported :

• Demodulated signal• Modulated signal (via BNC adapter)

− Both option in a single hardware variant with software selection

− Benefits :• Compensate internal clock drift• 1ms of time stamping accuracy • Full compatibility with any GPS clock• Minimize protection relays variants (2 in 1 solution)• Automatic switch to RS485 if GPS signal lost

P127 Option:IRIG-B Synchronisation


ProtectionProtectionFunctionsFunctions

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- - P 25

I>>> tI>>>

tI>>I>>

tI>I>

Ith

I<

Current

Tim

e

Thresholds


Protection and Control FunctionsEarth CT Ordering Options

Three current threshold ranges selected by ordering code:− From 0.100 to 40 Ien [ A version ]− From 0.010 to 8 Ien [ B version ]− From 0.002 to 1 Ien [ C version ]

Earth Fault Overcurrent

14

- - P 27

Ie>>> tIe>>>

tIe>>Ie>>

Ie>

Current

Tim

e

Thresholds

- - P 28

STI : Short Time InverseSI* : Short InverseVI* : Very InverseEI* : Extremely InverseLTI : Long Time InverseRI : Electromechanical

* IEC Curves

Ope

ratin

g Ti

me

(sec

onds

)

Setting Current Multiple1 10 100

0.001

0.01

0.1

1

10

100

1000

10000

100000

20

IEC and RI Curves

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- - P 29

STI : Short Time Inverse (CO2)MI* : Moderately InverseI : Inverse (CO8)VI* : Very InverseEI* : Extremely Inverse

* IEEE/ANSI Curves

Ope

ratin

g Ti

me

(sec

onds

)

Setting Current Multiple1 10 100

0.01

0.1

1

10

100

1000

10000

20

IEEE/ANSI Curves

- - P 30

T = 45900/ [(I/Is)5,6 - 1]

Ope

ratin

g tim

e (s

econ

ds)

Current (multiples of Is)1 10 100

0.001

0.01

0.1

1

10

100

1000

10000

100000

201,6

TMS = 1

RC Rectifier Curve

16

- - P 31

T =a I + b

Type of curve

1

2

3

a b

-0.0897

-0.0897

-0.0897

4.0897

4.5897

5.0897

Rated current = 1AEarth current range = 0.01 Ien to 8 IenCore balanced CT = 20/1

Curve 1

Curve 2Curve 3

LABORELEC Curve


I> t

I>> t

I>>> t

I> t

I>> t

I>>> t

Application OptionsInterlocking of Curve and DT Threshold(s)

t

II>>I>

t_I>

I> >> >>> Interlock NO

t

II>>I>

t_I>>

I> >> >>> Interlock YES

t_I>>>

I>>>

1st threshold suspended by 2nd and 3rd

threshold pickup

17


Benefits:No requirement to use

alternate setting groupsMay eliminate need for earth fault

stabilising resistorSecurity /dependability on energisation

Potential applications:Motor feedersHV transformer earth fault protectionAir conditioningResistive heating

Energisation period characteristic

Normal load characteristic

Energisationcurrent profile

Current

Time

Cold Load Pick-Up


Thermal Replica Overload Protection [49]

18


Circuit Breaker Failure [50BF]

Three independent high speed undercurrent threshold I<

Definite time tBF

Possibility to suspend blocking outputs (logic selectivity)

IA<

Trip ordertBF

&&

IB<

IC<

CB Fail(50BF)

IA<

Trip ordertBF

&&

RESET tBFTIMER

IB<

IC<


Circuit Breaker Monitoring

Cumulated I or I2 per phase− Adjustable alarm threshold− Display of Σ I or Σ I2

Total of CB open number− Adjustable alarm threshold

Operating time − Adjustable alarm thresholds for opening and closing

times

19

- - P 37

(RL1) Trip

P12x/y

Busbar

52

CB trip circuitfailure

+ Uaux

- Uaux

CB coil

52a

52bRS 485 Supervision system

RS 232 Front panel PC

Trip Circ

Trip Circuit Supervision

- - P 38

Boolean logic equations− Opto-input status to be directly used in

Boolean logic equation to perform basic automation scheme

− Boolean logic equation interaction− Possibility to inhibit alarm signal of Boolean

logic result− Settings:

• Affect selected input in each equation• Use Equ.X in Equ.Y• Define if equation alarm should be

inhibited or not in Configuration/Alarms

Logic Equations

20


Directional RelayDirectional RelayExtra FunctionsExtra Functions


Three directional / non directional three phase overcurrent thresholds

Directional phase elements internally polarised by quadraturewith the relevant phase to phase voltage

Synchronous polarisation for the collapse of the phase to phase voltage

Directional / non directional three phase Overcurrent

MiCOM P127Protection and Control Functions

21


MiCOM P127Protection and Control Functions

Trip conditions:− Iphase thresholds

exceeded in module− Iphase current vector

in the tripping zone

Directional three phase Overcurrent Forward and reverse zone


MiCOM P125 P126 & P127Protection and Control Functions

Trip conditions:− Ie and Ue thresholds

exceeded in module− Ie current vector in

the tripping areaIen=1A:

− Ie [mA] + Ue [V] > 18Ien=5A:

− Ie [mA] + 5 x Ue [V] > 90

Directional Earth Fault Overcurrent Forward and reverse zone

22


MiCOM P125 P126 & P127Protection and Control functions

Operation mode selectable:− Pe: residual active power− IeCosφ: active earth fault current component

Two thresholds (Pe>; Pe>>) or (IeCos>; IeCos>>

First threshold with:− Definite trip delay time− or Inverse trip delay time

• IEC, ANSI/IEEE, RI and RECT curves available• Definite reset time available on IEC and RI curves• Definite or Inverse time on IEEE/ANSI curves

Wattmetric & IeCosϕ Earth Fault Protection


Definite trip delay time for second and third thresholds

Setting characteristic angle ϕc for the thresholds− Pe= Ue x Ie x Cos (ϕ – ϕc)− Internal Automatic setting adaptation for 1/5A Ien− IeCos(ϕ – ϕc )− ϕ = Ue^Ie− Accuracy range of Pe and IeCos measurement: 85°< ϕ <+

85°

IeSinϕ available by adding 90° to the characteristic angle ϕc

MiCOM P125 P126 & P127Protection and Control functions

Wattmetric & IeCosϕ Earth Fault Protection

23


E/F IcosϕUe = Residual voltageUe’ = Polarisation voltage after RCA settingIecosϕ’ = Active component referred to Ue’Iesinϕ’ = Reactive component referred to Ue’

Ue

Ue’

RCAIe

Iesinϕ’Iecosϕ’

Trip zone

Trip zone

UeUe’

RCA

IeIesin

ϕ’

Iecosϕ’

Trip zo

ne

Trip zo

ne

Earth Wattmetric/IeCosϕ Protection

MiCOM P125 P126 & P127Protection and Control Functions


MiCOM P127Three Phase Overvoltage [59]

Two overvoltage thresholds− Each threshold independently configurable for AND/OR operating mode− Definite trip time

»U»A / AB»>..>> »>=1

»TRIP DELAY

»U»B/BC»>..>>

»U»C/CA»>..>>

»&

command

UA / AB>..>> >=1

TRIP DELAY

UB/BC>..>>

UC/CA>..>>

&AND/OR

Trip

Alarm

24


MiCOM P127Three Phase Undervoltage [27]

Two undervoltage thresholds− Each threshold independently configurable for AND/OR operating mode− Definite trip time

UA / AB<..<< ³ 1

UB/BC<..<<

UC/CA<..<<

&

command

Alarm

UA / AB<..<< ≥ 1

TRIP DELAY

UB/BC<..<<

U C/CA<..<<

&AND/OR

Trip


MiCOM Px20 Supplied by Alstom:Advantages

• Continuity of Expertise: The Centre of Excellence in Stafford, UK, remains a core asset, supplemented by satellite expert teams.

• Benefit from local support, right through to the flagship APPS training courses, with all of the know-how in Alstom.

• On-call assistance from our Contact Centre in Stafford, UK – a unique Alstom Grid facility.

• The entire value chain that customers previously experienced in AREVA T&D Automation – with a technically strong, respected local face to the customer. All from Alstom Grid.

• We offer the full scheme solution: Auxiliary/Trip/Hinged Armature relays – right up to MiCOM Px40 – a full solution from Alstom.

• Loose products to complete PACiS schemes – with local commissioning, and application support.

25

GRID

END

micom p127

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