General Logic - ABB RELION 630 Series Technical Manual

Section 7
Power management functions
7.6.4.5
256
The inputs to calculate the fast load-shedding trigger if the CB configuration setting
is set to "Bus coupler".
• Sending-end circuit breaker position.
• Sending-end lockout operating status.
• Sending-end circuit breaker service status.
The inputs to calculate the fast load-shedding trigger if the CB configuration setting
is set to "Tie breaker".
• Sending-end and receiving-end circuit breaker positions.
• Sending-end and receiving-end lockout operating status.
• Sending-end and receiving-end circuit breaker service status.
The calculation of the FLS_TRIGGER output logic is shown in
Close
SND_CB_POS
Open
Intermediate
Open
1
SND_CB_L_OUT
0
SND_CB_SER
CB configuration
"Bus coupler"
INHIBIT_TRG
Load-shedding
blocking signal
(Block logic module)
CB configuration
"Tie breaker"
RCV_CB_SER
Close
RCV_CB_POS
Open
Intermediate
Open
1
RCV_CB_L_OUT
0
GUID-EFEB58E0-1795-4F47-A386-13F219FED0DC V1 EN
Figure 144: Fast load-shedding trigger initiation logic
The FLS_TRIGGER output is reported to the Binary to integer module.

General Logic

This module calculates FLS_BLOCK and BLK_BYPASS outputs based on various
conditions
OR
AND
AND
OR
AND
OR
PML630/Compact Load-Shedding Solution
1MRS757256 F
Figure 144.
FLS_TRIGGER
OR
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