ABB RELION 630 Series Technical Manual page 313

1MRS757256 F
PML630/Compact Load-Shedding Solution
Technical Manual
SNW
GUID-D5FEC07E-A8B5-4C08-A435-7D656C9DC858 V2 EN
Figure 161: Functional module diagram
SNWRCLS receives different load-shedding data of the subnetwork from LSCACLS
through the SNW group input.
The function provides various load-shedding information for the subnetwork
corresponding to the inputs received from the LSCACLS function.
Table 342: Load-shedding information provided by SNWRCLS for the subnetwork
Output
CUM_LOD_PR1-19
AVA_POWER
RUNNING_LOAD
SHDABL_LOAD
POWER_BAL
LOD_INH_SYS
Table continues on next page
Power management functions
General
logic
Load-shedding information
This output provides the cumulative load-shedding power for
priority = 1. Similarly, the cumulative load-shedding power for the
priority = 2, 3...19 are provided by the CUM_LOD_PR2,
CUM_LOD_PR3...CUM_LOD_PR19 outputs respectively.
This output provides the total available power of the subnetwork.
This output provides the total load of the subnetwork.
This output provides the total load of the subnetwork available for
the load-shedding.
This output provides the load generation balance of the
subnetwork.
This output provides the total system inhibition (Auto inhibition) of
the sheddable load feeders in the subnetwork.
Section 7
CUM_LOD_PR1-19
AVA_POWER
RUNNING_LOAD
SHDABL_LOAD
POWER_BAL
LOD_INH_SYS
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
NEG_POW_BAL
LS_OPERATE
DIF_MUST_ACT
SLS_TRG_INH
307