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P444 D60 c264 RPV311 ABT MFM

This document provides details of the protection schemes for a 220kV line bay, 220kV bus coupler, and 220/33kV transformer. It lists the relay types and protective functions for each component, including distance protection, overcurrent protection, transformer differential protection, busbar protection, and breaker failure protection. Standard protections like overvoltage, undervoltage, directional overcurrent, earth fault, and homopolar overvoltage are included across all components.

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Heera Ramji
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103 views5 pages

P444 D60 c264 RPV311 ABT MFM

This document provides details of the protection schemes for a 220kV line bay, 220kV bus coupler, and 220/33kV transformer. It lists the relay types and protective functions for each component, including distance protection, overcurrent protection, transformer differential protection, busbar protection, and breaker failure protection. Standard protections like overvoltage, undervoltage, directional overcurrent, earth fault, and homopolar overvoltage are included across all components.

Uploaded by

Heera Ramji
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as XLSX, PDF, TXT or read online on Scribd
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P444

D60
c264
RPV311
ABT
220kV Line bay MFM
SL. DEVICE RELAY
CIRCUIT SLD
No REF. TYPE

2 L1 P444

21 L2 D60

1 220 kV LINE BAY


BC U
C264
RPV3 11
EM ABT
MFM —

2 220KV 50/51 N P 141


BUS COUPLER BC U C264
M FM
87T,51N (LV) , 6 4LV
49,24HV P 6 43
67/67N,50BF,
51N(HV) P141

220/33kV
6 4HV P 41
TRANSFORM ER

BCU C264
EM ABT
MFM
BUSBAR
PROTECTION 87BB SOBF P 7 46
PROTECTION/FEATURE COVER ED
MAIN 1 LINE DISTANCE PROTECTION,
LOCAL 0/V— U/V, DIR & NON DIR, 0/C — E/F, 1/3P A/R (79),
DFL, 78, 97, 46BC, 85, CTS, CVTS, ER, SOTF
MAIN 2 LINE DISTANCE PROTECTION,
LOCAL 0/V—U/V, DIR & NON DIR, 0/C-E/F, 1/5P A/R (79)
DR, DFL, 78, 9 7, 46BC, 85, CTS, CVTS, ER, SOTF, 50BF

INDICATION METE RINC, CONTROL & INTERLOCK SYNC. CHECK, ITL, L/R, EL

POWER ANALYZER
ENERGY METER ABT TYPE
MULTI FUNCTION METER

OVER CURRENT /EARTH FAULT PROTECTION(50/51N), SOBF


INDICATION METERING, CONTROL & INTERLOCK SYNC. CHECK (25)
MULTI FUNCTION METER
TRANSFORM ER DIFFER ENTIAL PROTECTION (87) , TROUBLE TRIPS,TRANSFORMER OVERFLU
XING
PROTECTION , DR. STAND BY E/F(51N) , LOW Z REF- LV(64)
DIR. O/C & E/F PROTN (6 7/67N)
STANDBY E/F(51N), BREAKER FAILU RE PROTECTION (50 BF)

HIGH Z REF-HV(6 4)

INDICATION METE RINC , CONTROL & INTERLOCK SYNC. CHECK(25), TRAFO. TROU BLE ALARM

ENERGY METER ABT TYPE


MU LTI FUNCTION METER

BUS BAR PROTECTION, BREAKER FAI LU RE PROTECTION (50 BF)


SI. No Description Relay Type

P444

132kV LINE BAY


D60
C264

RPV311
ABT
MFM
P141

C264
132kV BUS COUPLER MFM

P643

P141
220/33kV TRANSFORMER P141

C264
ABT
MFM
BUSBAR PROTECTION P746

P141
PROTECTION/FEATURE

MAIN 1 LINE DISTANCE PROTECTION, LOCAL 0/V— U/V, DIR & NON
DIR, 0/C — E/F, 1/3P A/R (79),
DFL, 78, 97, 46BC, 85, CTS, CVTS, ER, SOTF

MAIN 2 LINE DISTANCE PROTECTION,


LOCAL 0/V—U/V, DIR & NON DIR, 0/C-E/F, 1/5P A/R (79)
DR, DFL, 78, 9 7, 46BC, 85, CTS, CVTS, ER, SOTF, 50BF

INDICATION METE RINC, CONTROL & INTERLOCK SYNC. CHECK,


ITL, L/R, EL
POWER ANALYZER
ENERGY METER ABT TYPE
MULTI FUNCTION METER
OVER CURRENT /EARTH FAULT PROTECTION(50/51N), SOBF
INDICATION METERING, CONTROL & INTERLOCK SYNC. CHECK
(25)
MULTI FUNCTION METER
TRANSFORM ER DIFFER ENTIAL PROTECTION (87) , TROUBLE
TRIPS,TRANSFORMER OVERFLUXING, PROTECTION , DR.
STAND BY E/F(51N) , LOW Z REF- LV(64)
DIR. O/C & E/F PROTN (6 7/67N), STANDBY E/F(51N), BREAKER
FAILU RE PROTECTION (50 BF)
HIGH Z REF-HV(64)
INDICATION METERING , CONTROL & INTERLOCK SYNC.
CHECK(25), TRAFO. TROUBLE ALARM
ENERGY METER ABT TYPE
MULTI FUNCTION METER
BUS BAR PROTECTION, BREAKER FAILURE PROTECTION (50 BF)
DIR. O/C & E/F PROTN (6 7/67N), 50, 51, STANDBY E/F(51N),
BREAKER FAILU RE PROTECTION (50 BF)

59 G- homopolar overvoltage protection connected


to the VT secondary positioned on the machine
grounding (star point generator or transformer);

59 N for the homopolar overvoltage protection connected on the


vectorial sum of the three phase
VTs (open delta - residual voltage);

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