ABB RELION REX640, Техническое руководство, Страница: 1616 / 1960

This conflict status is available in the monitored data CONFL_STATUS as given in
Table 1548
.
Table 1548: States of CONFL_STATUS
Monitored data Value
CONFL_STATUS 1 (“No conflict”)
2 (“Multiple NSCB sync”)
3 (“Multiple SCB sync”)
4 (“NSCB and SCB sync”)
Source selection logic
Source selection logic is responsible for the selection and coordination of the
sources for the voltage and frequency matching. It is enabled only when the
autosynchronization function of the selected NSCB is in “Semiautomatic” or
“Automatic” mode.
A source is available for participation in the voltage and frequency matching if the
corresponding autosynchronization function is in “Semi-automatic” or “Automatic”
mode and the host protection relay is in remote mode. This information is received
from the corresponding source via input signals
SRC1_ASC_DAT
...
SRC8_ASC_DAT
.
All the sources in the network can be divided into nine participation groups based
on topology and their availability for participation.
Table 1549: Groups for source participation (monitored data
SRC1_PTC_GRP...SRC8_PTC_GRP)
Source participation group Description
Group 1 All the sources which are unavailable for participation, are
electrically connected to the grid or are not part of either
subnetwork which must be synchronized by the selected CB.
Group 2 The sources which do not belong to Group 1 and are part of
the subnetwork which includes the lower-number busbar of
the two busbars connected across the selected CB.
Group 3 The sources which do not belong to Group 1 and are part
of the other subnetwork, which includes the higher-number
busbar.
Group 4 The sources in Group 2 which are not ready for participation
in matching.
Group 5 The sources which are part of Group 3, but not ready for
participation in matching.
Group 6 The sources which are part of Group 2 or Group 3, but the
network is internally connected and setting
Synchrocheck
mode in ASNSCSYN is "Synchronous"
Group 7 The sources which are part of Group 2 or Group 3, but
the network is internally connected and the setting
Synchro-
check mode
in ASNSCSYN is "Asynchronous".
Group 8 The sources which are part of Group 2 or Group 3, but the
network is internally asynchronous and setting
Synchrocheck
mode
in ASNSCSYN is "Synchronous".
Group 9 The sources which are part of Group 2 or Group 3, but setting
Synchrocheck mode in ASNSCSYN is "Off".
Control functions 1MRS759142 F
1616 REX640
Technical Manual