GE D60 - Page 578

8-28 D60 Line Distance Protection System GE Multilin
8.5 SINGLE-POLE TRIPPING 8 THEORY OF OPERATION
8
The action output is generated per the following tables.
BG, CA, CAG 1001
CG, AB, ABG, 3P 0011
CG, AB, ABG, 3P, Unrecognized 0011
Table 8–19: UNBLOCKING SCHEME TRANSMIT CODES FOR 2-BIT CHANNELS
PHASE SELECTOR DETERMINATION
OF FAULT TYPE
BIT PATTERN TRANSMITTED
TX1 TX2
AG, BC, BCG 1 0
BG, CA, CAG 0 1
CG, AB, ABG, 3P, Unrecognized 1 1
Table 8–20: PERMISSIVE SCHEME TRIP TABLE FOR 2-BIT CHANNELS
REMOTE DATA LOCAL DATA
BIT PATTERN RECEIVED REMOTE DETERMINATION OF FAULT
TYPE
LOCAL DETERMINATION
OF FAULT TYPE
TRIP OUTPUT
RX1 RX2
1 0 AG, BC, BCG AG, AB, ABG CA, CAG, 3P Trip Phase A
0 1 BG, CA, CAG AG
1 1 CG, AB, ABG, 3P, Unrecognized AG
0 1 BG, CA, CAG BG, AB, ABG, BC, BCG, 3P Trip Phase B
1 1 CG, AB, ABG, 3P, Unrecognized BG
1 0 AG, BC, BCG BG
1 1 CG, AB, ABG, 3P, Unrecognized CG, BC, BCG, CA, CAG Trip Phase C
1 0 AG, BC, BCG CG
0 1 BG, CA, CAG CG
1 1 CG, AB, ABG, 3P, Unrecognized AB, ABG, 3P, Unrecognized Trip Three Phases
1 0 AG, BC, BCG BC, BCG, Unrecognized
0 1 BG, CA, CAG CA, CAG, Unrecognized
Table 8–21: BLOCKING SCHEME TRIP TABLE FOR 2-BIT CHANNELS
REMOTE DATA LOCAL DATA
BIT PATTERN RECEIVED REMOTE DETERMINATION OF FAULT
TYPE
LOCAL DETERMINATION
OF FAULT TYPE
TRIP OUTPUT
RX1 RX2
0 1 AG, BC, BCG AG, AB, ABG CA, CAG, 3P DIR BLOCK TRIP A
1 0 BG, CA, CAG AG
0 0 CG, AB, ABG, 3P, Unrecognized AG
1 0 BG, CA, CAG BG, AB, ABG, BC, BCG, 3P DIR BLOCK TRIP B
0 0 CG, AB, ABG, 3P, Unrecognized BG
0 1 AG, BC, BCG BG
0 0 CG, AB, ABG, 3P, Unrecognized CG, BC, BCG, CA, CAG DIR BLOCK TRIP C
0 1 AG, BC, BCG CG
1 0 BG, CA, CAG CG
Table 8–18: BLOCKING SCHEME TRANSMIT CODES FOR 2-BIT CHANNELS
PHASE SELECTOR DETERMINATION
OF FAULT TYPE
BIT PATTERN TRANSMITTED FLEXLOGIC™ OPERANDS
ASSERTED
TX1 TX2 TX1 STOP TX2 STOP