ABB REL 356

ABB REL 356 Current Differential Protection
4-15
Measuring Elements and Operational Logic
ABB
03-23-97
SW
REL356 CURRENT DIFFERENTIAL SYSTEM LOGIC
ABB Automation Inc.
Substation Automation and Protection Division
Allentown, PA
SIZE FSCM NO DWG NO REV
1358D84
V 1.2X
SH
2 OF 3
SBP
ROBR
IL
SBOBT
SOBT
0
STUB BUS/OPEN
BKR TRIP
DPT
CDT
DSBL
BLK_TRP
VBT
SEBR
CHOK
ILTS
OUT
OUT
IN
IN
'1'
'0'
IL
PLT
PILOT TRIP
LOGIC
TRP1
PSE
60s
0
T1DAND
200
500
TRP1
52b
BTRP
OST
IH
RDTT
10
0
DDTT
'0'
'2'
'4'
RECLOSE
INTO FAULT
TRP2
PSE
60s
0
T2DAND
TRP3
PSE
60s
0
T3DAND
CHOK
IAL
IBL
ICL
IGL
IL
LOW LEVEL SUPERVISION
IACD
IBCD
ICCD
IGCD
VACD
VBCD
VCCD
CD
dI
dVdI
0
150
CDT
CHANGE DETECTOR
TO REMOTE END
IA
IB
IC
PHASE
SELECTOR
LOGIC
CG
3F
FF
F G
BG
AG
PHASE
SELECTOR
TDES_ACTIVE
OUT
VFLI
VFLR
LDT
COMMUNICATION
DELAY COMPENSATION
DVFLI
DVFLR
FROM REMOTE END
VFRI
90 deg. DELAY
OPERATE
FUNCTION
RESTRAINT
FUNCTION
VFRR
OP
RES
OP-0.7RES
>
OTH
DPT
CURRENT DIFFERENTIAL
TRIP ALGORITHM
MOTH = OTH x TDES TO OTH
RAMPED OVER 20 CYCLES
AFTER BREAKER CLOSES
MOTH = OTH
MOTH
IT
DFT
COSINE
FILTER
52b
32 CYCL
OTH
TDES
FDOPA
FDOPB
FDOPC
FDOPA
FDOPB
FDOPC
FDOP3F
PHASE DIRECTIONAL
ELEMENTS
D2
D0
DIRU
NSEQ
ZSEQ
FDOG
GROUND DIRECTIONAL
ELEMENTS
GDM = GOOD CHANNEL DELAY MEASUREMENT
DCT = CHANNEL TROUBLE FROM DCE
CDER = DCE ERROR
WID = WRONG ID/NO DELAY MEASUREMENT
HB = HARD BLOCK
VDATA = VALID DATA FROM DCE RECEIVER
IAE
IBE
ICE
52b
OBKR
52b
BOTH
IE
OUT
'0'
40
0
OPBR
IAH
FDOP
IN
FDOPA
DIRECTIONAL
OUT
ICH
NON-DIRECTIONAL
IN
OUT
FDOPC
DIRECTIONAL
IGH
FDOG
NON-DIRECTIONAL
IN
OUT
FDOG
DIRECTIONAL
IBH
NON-DIRECTIONAL
IN
FDOPB
DIRECTIONAL
IPH
IN
OUT
IGH
IN
OUT
IHT
HIGH SET
OVERCURRENT
TRIP
NON-DIRECTIONAL
OUT
LDPD
RDPD
150
150
DSBL
0
230
GDM
DCT
CDER
WID
115
0
HB
FROM DCI
CHOK*
200
150
BKUP
CTDD
CT
NONE
SIGNAL TO ENERGIZE
BACKUP RELAYING (SEBR)
LBPD
0
150
0
16
VDATA VBT
SEBR
0
500
BLK_TRP
OPEN BREAKER