ABB RELION REX640, Техническое руководство, Страница: 1611 / 1960

ASGCSYN via
SRC1_ASC_DAT
...
SRC8_ASC_DAT
or from the corresponding
ASNSCSYN via signals
NS1_ASC_DAT
...
NS17_ASC_DAT
.
An example of the subnetwork group identification is shown in
Figure 886
. Since
NSCB 2 connects bus bar 1 and bus bar 2, then setting
NonSrc2 bus A1 Num is set
to "Bus 1" and
NonSrc2 bus A2 Num is set as "Bus 2". Based on the bus connection
status received via the input
NS2_ASC_DAT
, this module determines that Bus 1, Bus
2 and NSCB 2 are electrically connected. Similarly for SCB 2,
Src2 bus A Num is set as
"Bus 2" and the source CB closed status input is received via
SRC1_ASC_DAT
. So SCB
2 is electrically connected to Bus 2. Hence it is determined that SCB 2, Bus 2, Bus 1
and NSCB 2 are electrically connected to each other.
Two subnetworks are identified in
Figure 886
. The first comprises Bus 1, Bus 2,
NSCB 1, NSCB 2, SCB 2 and source 2. The second comprises Bus 3, Bus 4, NSCB 4,
SCB 3 and source 3. Each network group is assigned a subnetwork number which
is the lowest bus bar number in the subgroup. Hence the first group is assigned
subnetwork number 1 and the second group is assigned subnetwork number 3.
Source
1
Bus 3
SCB 2
NSCB 1
NSCB 2 NSCB 3
SCB 1
SCB 3
NSCB 4
Bus 4
Bus 2 Bus 1
Source
2
Source
3
Figure 886: An example of subnetwork group identification
Table 1541: ASCGAPC settings of NSCB1 for given example
Settings Suggested values Description
ASC CB Num1 Non source CB 1 ASC1 host circuit breaker number 1
Number of sources 3 Total number of sources present in the sys-
tem
Number of NonSrc CB 4 Number of bus coupler or grid transformer
CB in the system
Src1 bus A Num Bus 3 Source1 CB connected bus A number
Table continues on the next page
1MRS759142 F Control functions
REX640
Technical Manual
1611