Fls Trigger Logic - ABB RELION 630 Series Technical Manual

1MRS757256 F
7.6.4.4
PML630/Compact Load-Shedding Solution
Technical Manual
CB configuration
"Bus coupler"
SND_CB_POS
"Close"
SND_CB_SER
SND_IED_QVAL
"Good"
SND_CB_L_OUT
CB configuration
"Tie breaker"
RCV_CB_POS
"Close"
RCV_CB_SER
RCV_IED_QVAL
"Good"
RCV_CB_L_OUT
GUID-63B0420B-442D-4B34-B4EB-9072CBB27EC1 V1 EN
Figure 143: Compensated circuit breaker status logic
If the load-shedding blocking signal is active due to IED data quality bad and the Block
override setting is set to "Quality bad CB close", COMPCB_STS is active.
If the load-shedding blocking signal is active due to IED data quality bad and the
Block override setting is set to "Quality bad CB open", the COMPCB_STS signal is
inactive.
If the load-shedding blocking is active due to various other conditions, that is, IED
data quality bad or IED in test mode or circuit breaker in intermediate/invalid position
and the Block override setting is set to "All yes", the COMPCB_STS signal is inactive.
If the CB configuration setting is set to "Virtual breaker", the
COMPCB_STS signal is active.
If COMPCB_STS is active, the CB_COMPS_POS output is "Close", else the
CB_COMPS_POS output is "Open".
The COMPCB_STS signal is reported to the Binary to integer module.

FLS trigger logic

This module calculates the fast load-shedding trigger.
Power management functions
AND
OR
AND
AND
AND
Section 7
COMPCB_STS
255