connectivity
setting,
PEER2_DATA
,
PPLS2_QVAL
and
ENA_PPLS2
.
The module reports the calculated compensated circuit breaker statuses for power
source 1 and power source 2 to the Binary to integer module and Load shed sharing
mode module.
The module reports the calculated fast load-shedding triggers for power source 1 and
power source 2 to the General logic module.
The module reports the calculated island parallel status, fast load-shedding blocking
status for power source 1 and power source 2 to the Busbar logic.
7.7.4.5
Power monitoring
The module calculates the available powers and active powers for power source 1 and
power source 2.
Based on the
Grid1 connectivity
setting and various other conditions, available power
and active power for power source 1 are calculated as shown in
Table 310:
The calculation of available power and active power for power source 1
Setting Grid1
connectivity
Output AVA_POWER_SRC1
Output ACT_POW_SRC1
External source
AVA_POW_SRC1 = AVA_POWER_SRC1
ACT_POW_SRC1 = ACT_POWER_SRC1
Peer substation
1.
AVA_POW_SRC1 = ACT_POWER_SRC1, if
ACT_POWER_SRC1 ≥ 0
2.
AVA_POW_SRC1 = 0.0, if PACT_POWER_SRC1 < 0
3.
AVA_POW_SRC1 = AVA_POWER_SRC1, provided
any of the following is satisfied.
•
LS_BLK_STS1 is activated
•
ENA_PPLS1 is deactivated
•
Input PPLS1_QVAL is Bad
•
OC_OPR_SRC1 is activated
•
MAX_DMD_SCR1 is activated
•
EXT_SLT_SRC1 is activated
1.
ACT_POW_SRC1 = ACT_POWER_SRC1, if
ACT_POWER_SRC1 ≥ 0
2.
ACT_POW_SRC1 = 0.0, if
ACT_POWER_SRC1 < 0
3.
ACT_POW_SRC1 = ACT_POWER_SRC1,
provided any of the following is satisfied.
•
LS_BLK_STS1 is activated
•
ENA_PPLS1 is deactivated
•
Input PPLS1_QVAL is Bad
The logic is identical for calculating the
ACT_POW_SRC2
and
AVA_POW_SRC2
outputs for power source 2.
The
ACT_POW_SRC1
,
ACT_POW_SRC2
,
AVA_POW_SRC1
and
AVA_POW_SRC2
outputs are reported for the monitoring view.
7.7.4.6
General logic
The module calculates the slow load-shedding trigger, slow load-shedding enable
status for each power source based on various conditions.
Section 7
1MRS757256 F
Power management functions
268
PML630/Compact Load-Shedding Solution
Technical Manual
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