Functionality - ABB RELION Series Technical Manual

Section 9
Control functions
9.2.3
9.2.4
9.2.5
614
A071282 V2 EN
Figure 313: Function block

Functionality

The functions DCSXSWI and ESSXSWI indicate remotely and locally the open,
close and undefined states of the disconnector and earthing switch. The functionality
of both is identical, but each one is allocated for a specific purpose visible in the
function names. For example, the status indication of disconnectors or circuit breaker
truck can be monitored with the DCSXSWI function.
The functions are designed according to the IEC 61850-7-4 standard with the logical
node XSWI.
Operation principle
Status indication and validity check
The object state is defined by the two digital inputs POSOPEN and POSCLOSE, which
are also available as outputs OPENPOS and CLOSEPOS together with the OKPOS
according to Table 641. The debounces and short disturbances in an input are
eliminated by filtering. The binary input filtering time can be adjusted separately for
each digital input used by the function block. The validity of digital inputs that
indicate the object state is used as additional information in indications and event
logging.
Table 641: Status indication
Input
POSOPEN POSCLOSE
1=True 0=False
0=False 1=True
1=True 1=True
0=False 0=False
Application
In the field of distribution and sub-transmission automation, the reliable control and
status indication of primary switching components both locally and remotely is in a
significant role. These features are needed especially in modern remote controlled
substations. The application area of DCSXSWI and ESSXSWI functions covers
Status Output
POSITION OKPOS
(Monitored
data)
1=Open 1=True
2=Closed 1=True
3=Faulty/Bad 0=False
(11)
0=Intermediat 0=False
e (00)
1MRS758755 A
OPENPOS CLOSEPOS
1=True 0=False
0=False 1=True
0=False 0=False
0=False 0=False
REC615 and RER615
Technical Manual