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7.4.4.3
Compensated CB status
This module calculates the compensated circuit breaker status by considering the
circuit breaker position, circuit breaker in service/test status and IED data quality of
the power source.
The conditions to set the compensated circuit breaker status as TRUE.
•
The input
CB_POSITION
(power source circuit breaker position) is "Close".
•
The input
CB_SERVICE
(power source circuit breaker in service) is TRUE.
•
The input
CB_LOCK_OUT
(Protection lockout operation status of power source)
is FALSE.
•
The input
CB_IED_QVAL
is "Good".
If one or more of the above conditions are not met, compensated circuit breaker status
is FALSE.
If the load-shedding blocking status is activated due to bad IED data quality and the
Block override
setting is “Quality bad CB open”, then compensated CB status is
FALSE.
If the load-shedding blocking status is activated due to bad IED data quality and the
Block override
setting is “Quality bad CB close”, the output compensated CB status
is TRUE.
If the calculated compensated CB status is TRUE, the output
CB_COMPS_POS
is
“Close”, else the output
CB_COMPS_POS
is “Open”.
The calculated compensated circuit breaker status is reported to the Binary to integer
module.
7.4.4.4
General logic
This module calculates
FLS_BLOCK
output,
BLK_BYPASS
output and island
parallel status based on various conditions.
The
FLS_BLOCK
output provides the load-shedding blocking signal after
considering the override action using the
Block override
setting. The
BLK_BYPASS
output indicates the successful overridden action of the load-shedding blocking
signal.
Section 7
1MRS757256 F
Power management functions
220
PML630/Compact Load-Shedding Solution
Technical Manual
Summary of Contents for Relion 630 Series
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