General Logic - ABB RELION 630 Series Technical Manual

Section 7
Power management functions
7.10.4.1
308
Output
LOD_INH_OPR
LOD_MISMATCH
MAN_SHD_POW
MAN_SHD_PRIO
EFF_POW_BAL
MUST_SHD_LOD
ACT_SHD_LOD
LS_OPR_STS
DISABLE_LS
SN_ACTIVE
LS_BLOCK
LS_RESET
MAN_LS_TRG
SHD_PRIO_RC1
SHD_PRIO_RC2
SHD_PRIO_RC3
For more information on the above mention inputs, see the LSCACLS
function.

General logic

The General logic module calculates the load-shedding information of the
subnetwork.
Load-shedding information
This output provides the total operator inhibited (Manual
inhibition) of the sheddable load feeders in the subnetwork.
This output provides the load mismatch in the subnetwork.
This output provides the amount of load to be shed by the
operator in the subnetwork during manual load-shed action.
This output provides the load shed priority to be executed by the
operator in the subnetwork during manual load-shed action.
This output provides the effective load generation balance of the
subnetwork considering power balance of the subnetwork and
spinning reserve power received from adjacent electrical areas.
This output provides the must be shed power of the subnetwork.
This output provides the actual load-shed power of the
subnetwork.
This output provides load shed operated status such as "No Load
shed"/"Fast Load shed"/"Slow Load shed"/"Manual Load shed"/
"Extended Load shed"
This output provides load-shed disable status in the subnetwork.
This output provides the subnetwork active information.
This output provides the load-shed block information of the
subnetwork.
This output provides the load-shed reset information of the
subnetwork.
This output provides the manual load-shed trigger information.
Latest load-shed priority
Old load-shed priority
Older load-shed priority
These outputs show the three load-shed priority generated in the
subnetwork. After load-shed reset action the shed priority resets
to zero.
PML630/Compact Load-Shedding Solution
1MRS757256 F
Technical Manual