Proteção Diferencial de Linha MiCOM 540 - Cepel · MiCOM Protection P340 Generator ... P940 Frequency Protection Relays P240 Universal Motor Protection Relay ... Power swing blocking

Proteção Diferencial de Linha MiCOM 540

Denys LELLYSEnergy, Automation and Information - Brasil

Belo Horizonte 2005

> Presentation title - Date - Références3

MiCOM Protection

P340 Generator Protection RelaysP340 Generator Protection Relays

P430/P440 Distance Protection RelaysP430/P440 Distance Protection Relays

P540 Line Differential and Unit ProtectionP540 Line Differential and Unit Protection

P940 Frequency Protection RelaysP940 Frequency Protection Relays

P240 Universal Motor Protection RelayP240 Universal Motor Protection Relay

P840 P840 AutorecloseAutoreclose RelaysRelays

P740 P740 BusbarBusbar Protection RelaysProtection Relays

P630 Transformer Protection RelaysP630 Transformer Protection Relays

P140 Feeder Management RelaysP140 Feeder Management Relays


Currente Diferencial -Vantagens

Não necessita de transformador de Potencial (TP);

Aplicação para 2 ou 3 terminais de linha;

Deteção da falta c/ alta resistencia;

Imunidade a oscilação de potência;

Uniformidade de tempo de trip;

Imunidade em linhas com compensação série;

Simples para ajustar e sem problema de coordenação.

MiCOM-P540-4


P540 Funções de Proteção

Falha doDisjuntor

Intertripping& ComandoTransferido

ProteçãoTérmica

Religamento +Check Sinc.

DeteçãoConducto

rRompidoStub Bus

p/Sobrecorrente

CorrenteDiferencial

Sobrecorrente,SEF e DEF

BackupProtecãoDistancia

In-ZoneTransformador

MiCOM-P540-5


Corrente DiferencialDois Terminais -Proteção

End A

Link Comunicação - Fibra óptica

End B

Relay A Relay BAI BI

FI

IA +IB =0 -> OK IA +IB ≠ 0 (= IF) Falta

MiCOM-P540-6


Corrente Diferencial Três Terminais - Proteção

CIAI BIFI

Relay B

End C

End A

IA + IB + IC = 0 (OK)IA + IB + IC ≠ 0 (= IF falta)


Link de Fibra óptica Direta

OPGW

MiCOM-P540-8


Conexão direta por Fibra óptica entre Relés

850nm MultiMode

1300nm MultiMode

1300nm SingleMode

1550nm SingleMode

Min. TransmitOutput Level

-19.8dBm -8.2dBm -8.2dBm -8.2dBm

ReceiverSensitivity

-25.4dBm -38.2dBm -38.2dBm -38.2dBm

Optical Budget 5.6dB 30.0dB 30.0dB 30.0dBLess Safety

Margin (3dB)2.6dB 27.0dB 27.0dB 27.0dB

Typical CableLoss

2.6dB/km 0.8dB/km 0.4dB/km 0.3dB/km

Max.Transmission

Distance

1km 30km 60km 80km

*

Short Haul Long Haul

Key: * 3dB allowance for joint loss/ageingMiCOM-P540-9


850nm multimode optical fibre

P593interface

unitISDN

X.21 electrical

P591/2interface

unit

Interface a Sistemas Multiplexados

MultiplexerG.703

electrical

MultiplexerV.35

electrical

P591/2interface

unit

MiCOM-P540-10


Current Measurement andFiltering - 1

i(t)i2

i1

i3

i4

i5i6 i7

i8

t

8 samples per cycle

MiCOM-P540-11


Data Message Format

Startflag Address Data Frame

checkEndflag

Statusand

commands

Currentvectors

Timingdata

MiCOM-P540-12


Propagation Delay Correction

Relay A Relay B

Current at B

Current received from A

Propagation delayMiCOM-P540-13


Current Differential Characteristic

DifferentialcurrentI =

I + I + Idiff

A B C

Bias currentbias A B CI = 1/2 ( I + I + I )

IS1Percentage bias k1

INo trip

IC

IBIA

Percentage bias k

2

S2

Trip

MiCOM-P540-14


Transient Change in Propagation Delay (3)

DifferentialcurrentI =

I + I + Idiff

A B C

Bias currentbias A B CI = 1/2 ( I + I + I )

IS1

Bias k1

INo trip

Bias k2

S2

Trip

MiCOM-P540-15

Bias 20

0%


Direct Intertrip

TransformerProtection

DTT=1Data Message

Relay A Relay B

+ +--

MiCOM-P540-16


Permissive Intertrip

BusbarRelay

PIT=1Data Message

Relay A Relay B

F

IB

+ +--

Example shows interlocked overcurrent protectionFeeder fault seen within busbar zoneRemote end trip after set delay for PIT & current > Is1MiCOM-P540-17


8 Programmable Intertrip/ControlCommands, End - End

A B52 52

Single or dual fibre optic comms.

850nm1300nm1550nm

or MUX

8 + PIT

8 + PIT

&> 1 &

> 1

PSLPSL

8 Commands from PSL end A - PSL end BDistance and DEF aided channel schemesBreaker fail backtrip to upstream CBForce remote end A/R for successful local A/RSCADA for remote end substationMiCOM_18


Dual Main Protection - 87L Differential, 21 Distance, Plus Backup

87L Current Differential

Zone 1 / 2 DistanceZone 3

Distance *Zone 3

Distance *

Directional / Non-DirectionalOvercurrent and Earth Fault

(* Zone 3 can be set forwarddirectional if required)MiCOM-P540-19


P543/P544: Distance ProtectionThree Quadrilateral Zones

R

X

Z2

Z1

Z3 Directional Line

Power swingblocking band

MiCOM-P540-20

(Zone 3 can be set forwarddirectional if required)


Fault Locator: (P543 - P546)

With Mutual Current Compensation

16% 3.8Ω 16km 10miles

MiCOM-P540-21


Programmable Scheme Logic (1)

User programmable scheme logic

Timers

Relay contacts

LED’s

Protectionelements

Fixed schemelogic

OptoGate Logic


Event & Fault Records

Event recordsEvent records ::250 records

Non-volatile memory

Start A 10msFault recordI1> 10msV< 15msTrip ABC 15msCB52 Open 60ms

Fault recordsFault records :Last 5 faults

Non-volatile memory

Fault A-B-C 10msFault location 85kmIa 1000AIb 1000AIc 1000AIn 100A

...


Disturbance Records

Prefault

Postfault

8 Analogue channels

32 Digital channels

Configurable trigger source

Variable trigger point

Sample 12 times per cycle

20 Records

Record duration of 10.5s

Non-volatile memory

Extended recording time

MiCOM S1 saves file in theCOMTRADE format

Documents

Proteção Diferencial de Linha MiCOM 540 - Cepel · MiCOM Protection P340 Generator ... P940 Frequency Protection Relays P240 Universal Motor Protection Relay ... Power swing blocking