Function Block; Functionality - ABB RELION 630 Series Technical Manual

Section 7
Power management functions
7.5.2
7.5.3
236

Function block

LDMMXU
POWER_L1
CB_POS_L1
IED_QVAL_L1
IED_TEST_L1
EXT_INH_L1
POWER_L2
CB_POS_L2
IED_QVAL_L2
IED_TEST_L2
EXT_INH_L2
POWER_L3
CB_POS_L3 B_SET_CHANGE
IED_QVAL_L3
IED_TEST_L3
EXT_INH_L3
POWER_L4
CB_POS_L4
IED_QVAL_L4
IED_TEST_L4
EXT_INH_L4
POWER_L5
CB_POS_L5
IED_QVAL_L5
IED_TEST_L5
EXT_INH_L5
POWER_L6
CB_POS_L6
IED_QVAL_L6
IED_TEST_L6
EXT_INH_L6
POWER_L7
CB_POS_L7
IED_QVAL_L7
IED_TEST_L7
EXT_INH_L7
POWER_L8
CB_POS_L8
IED_QVAL_L8
IED_TEST_L8
EXT_INH_L8
POWER_L9
CB_POS_L9
IED_QVAL_L9
IED_TEST_L9
EXT_INH_L9
POWER_L10
CB_POS_L10
IED_QVAL_L10
IED_TEST_L10
EXT_INH_L10
GUID-EA28791D-52AF-4642-8F46-9E412A094E47 V2 EN
Figure 137: Function block

Functionality

Load busbar monitoring LDMMXU function calculates the compensated CB status
and load-shedding inhibit status for individual sheddable loads. The load-shedding
BB
L1_CB_COMPS
L2_CB_COMPS
L3_CB_COMPS
L4_CB_COMPS
L5_CB_COMPS
L6_CB_COMPS
L7_CB_COMPS
L8_CB_COMPS
L9_CB_COMPS
L10_CB_COMPS
1MRS757256 F
PML630/Compact Load-Shedding Solution
Technical Manual