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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
> Presentation title - Date - Références4
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
> Presentation title - Date - Références5
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
> Presentation title - Date - Références6
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
> Presentation title - Date - Références7
Corrente Diferencial Três Terminais - Proteção
CIAI BIFI
Relay B
End C
End A
IA + IB + IC = 0 (OK)IA + IB + IC ≠ 0 (= IF falta)
> Presentation title - Date - Références8
Link de Fibra óptica Direta
OPGW
MiCOM-P540-8
> Presentation title - Date - Références9
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
> Presentation title - Date - Références10
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
> Presentation title - Date - Références11
Current Measurement andFiltering - 1
i(t)i2
i1
i3
i4
i5i6 i7
i8
t
8 samples per cycle
MiCOM-P540-11
> Presentation title - Date - Références12
Data Message Format
Startflag Address Data Frame
checkEndflag
Statusand
commands
Currentvectors
Timingdata
MiCOM-P540-12
> Presentation title - Date - Références13
Propagation Delay Correction
Relay A Relay B
Current at B
Current received from A
Propagation delayMiCOM-P540-13
> Presentation title - Date - Références14
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
> Presentation title - Date - Références15
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%
> Presentation title - Date - Références16
Direct Intertrip
TransformerProtection
DTT=1Data Message
Relay A Relay B
+ +--
MiCOM-P540-16
> Presentation title - Date - Références17
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
> Presentation title - Date - Références18
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
> Presentation title - Date - Références19
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
> Presentation title - Date - Références20
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)
> Presentation title - Date - Références21
Fault Locator: (P543 - P546)
With Mutual Current Compensation
16% 3.8Ω 16km 10miles
MiCOM-P540-21
> Presentation title - Date - Références22
Programmable Scheme Logic (1)
User programmable scheme logic
Timers
Relay contacts
LED’s
Protectionelements
Fixed schemelogic
OptoGate Logic
> Presentation title - Date - Références23
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
...
> Presentation title - Date - Références24
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