Disturbance Recorder_Standardisation of Channels
2
Standardization of the signals for the disturbance recorders The numerical relays now come with 32 Digital Channels in DR. Sl No Analog Signal Digital Signal Remark 1 R-Phase Current R-Phase Main CB Open 2 Y-Phase Current Y-Phase Main CB Open 3 B-Phase Current B-Phase Main CB Open 4 Neutral Current R-Phase Tie CB Open For One and Half Bus 5 R-Phase Voltage Y-Phase Tie CB Open For One and Half Bus 6 Y-Phase Voltage B-Phase Tie CB Open For One and Half Bus 7 B-Phase Voltage Z1 Start 8 Neutral Voltage Main-I /II Carrier Received 9 Z2 Start 10 T2 11 Z3 Start 12 T3 13 Z4 Start 14 T4 15 Distance Trip 16 Stub Enable 17 SOTF Trip 18 DEF Start 19 DEF Trip 20 DT received Channel I/II 21 Bus Bar Protection Trip Shall ensure that the currents of all the feeders is recorded in case of Bus Bar Tripping 22 Line Reactor protection trip To get the disturbance record for a reactor tripping
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Transcript of Disturbance Recorder_Standardisation of Channels
Standardization of the signals for the disturbance recordersThe numerical relays now come with 32 Digital Channels in DR.Sl NoAnalog SignalDigital SignalRemark
1R-Phase CurrentR-Phase Main CB Open
2Y-Phase CurrentY-Phase Main CB Open
3B-Phase CurrentB-Phase Main CB Open
4Neutral CurrentR-Phase Tie CB OpenFor One and Half Bus
5R-Phase VoltageY-Phase Tie CB OpenFor One and Half Bus
6Y-Phase VoltageB-Phase Tie CB OpenFor One and Half Bus
7B-Phase VoltageZ1 Start
8Neutral VoltageMain-I /II Carrier Received
9Z2 Start
10T2
11Z3 Start
12T3
13Z4 Start
14T4
15Distance Trip
16Stub Enable
17SOTF Trip
18DEF Start
19DEF Trip
20DT received Channel I/II
21Bus Bar Protection TripShall ensure that the currents of all the feeders is recorded in case of Bus Bar Tripping
22Line Reactor protection tripTo get the disturbance record for a reactor tripping
23Over Voltage Stage-I startShall be helpful to verify the cases of OV tripping.
24Over Voltage Stage-I Trip
25Over Voltage Stage-II Start
26Over Voltage Stage-II Trip
27LBB Initiation R-phaseShall be instrumental in analyzing bus-bar maltrippings
28LBB Initiation Y-phase
29LBB Initiation B-phase
30Main Bay LBB operated
31Tie Bay LBB operated
32Main-I Trip
