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SND_CB_POS
”Close”
SND_CB_L_OUT
SND_CB_SER
SND_IED_QVAL
“Good”
CB configuration
“Bus coupler”
COMPCB_STS
AND
AND
CB configuration
“Tie breaker”
AND
RCV_CB_POS
”Close”
RCV_CB_L_OUT
RCV_CB_SER
RCV_IED_QVAL
“Good”
AND
OR
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.
7.6.4.4
FLS trigger logic
This module calculates the fast load-shedding trigger.
1MRS757256 F
Section 7
Power management functions
PML630/Compact Load-Shedding Solution
255
Technical Manual
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