Depending on fast load-shed blocking signals received from NCBDCSWI,
NPMMXU functions and subnetwork number of busbars, the load-shed blocking for
particular subnetwork is calculated as follows.
The module receives the fast load-shed block signal
FLS_BLK_BB1...FLS_BLK_BB4
for busbar 1...4 from the NPMMXU function.
If any of the busbar fast load-shed block signal is active, the corresponding
subnetwork is blocked.
If the
FLS_BLK_BB1
signal is active, the load-shed blocking is active for subnetwork
corresponding to
BB1_SN_NO
, for example, if
FLS_BLK_BB1
is TRUE and
BB1_SN_NO
= 1, subnetwork 1 load-shed blocking is active.
The module receives the fast load-shed block signals
FLS_BLK_CB
ij
and test mode
blocking signals
TST_BLK_CB
ij
from the respective NCBDCSWI functions.
If
FLS_BLK_CB
ij
is active or
TST_BLK_CB
ij
is active, the subnetwork number of
busbar ”i” and busbar “j” is blocked, for example, if
FLS_BLK_CB12
is TRUE and
BB1_SN_NO
= 1 and
BB1_SN_NO
= 2, subnetwork 1 and subnetwork 2 load-shed
blocking is active.
If the
BLOCK
input is TRUE, all subnetworks load-shedding blocking signal is active.
shows load-shed blocking signals for different subnetworks for various
conditions.
Subnetwork
LS block
calculation
FLS_BLK_BB1
BB1_SN_NO
Subnetwork
LS block
calculation
FLS_BLK_BB4
BB4_SN_NO
Subnetwork
LS block
calculation
FLS_BLK_CB
12
BB1_SN_NO
Subnetwork
LS block
calculation
FLS_BLK_CB
56
BB5_SN_NO
OR
TST_BLK_CB
12
TST_BLK_CB
56
OR
OR
OR
LS_BLOCK1
LS_BLOCK2
LS_BLOCK3
LS_BLOCK4
BLOCK
BB6_SN_NO
BB2_SN_NO
GUID-0A2AAEC0-773B-4C92-8728-15D0A92BAB87 V1 EN
Figure 152:
Calculation of load-shed blocking signal for subnetworks
Section 7
1MRS757256 F
Power management functions
282
PML630/Compact Load-Shedding Solution
Technical Manual
Summary of Contents for Relion 630 Series
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