12.7.1
Identification
GUID-E16EA78F-6DF9-4B37-A92D-5C09827E2297 v3
Function description
IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Generic communication function for
Double Point indication
DPGAPC
-
-
12.7.2
Application
SEMOD55391-5 v8
Generic communication function for Double Point indication (DPGAPC) function
block is used to send double point position indication to other systems, equipment or
functions in the substation through IEC 61850-8-1 or other communication protocols.
It is especially intended to be used in the interlocking station-wide logics. To be able to
get the signals into other systems, equipment or functions, one must use other tools,
described in the Engineering manual, and define which function block in which
systems, equipment or functions should receive this information.
More specifically, DPGAPC function reports a combined double point position
indication output POSITION, by evaluating the value and the timestamp attributes of
the inputs OPEN and CLOSE, together with the logical input signal VALID.
When the input signal VALID is active, the values of the OPEN and CLOSE inputs
determine the two-bit integer value of the output POSITION. The timestamp of the
output POSITION will have the latest updated timestamp of the inputs OPEN and
CLOSE.
When the input signal VALID is inactive, DPGAPC function forces the position to
intermediated state.
When the value of the input signal VALID changes, the timestamp of the output
POSITION will be updated as the time when DPGAPC function detects the change.
Refer to Table
for the description of the input-output relationship in terms of the
value and the quality attributes.
Table 43:
Description of the input-output relationship
VALID
OPEN
CLOSE
POSITION
Value
Description
0
-
-
0
Intermediate
1
0
0
0
Intermediate
1
1
0
1
Open
1
0
1
2
Closed
1
1
1
3
Bad State
1MRK 505 370-UUS A
Section 12
Control
Busbar protection REB670 2.2 ANSI
401
Application manual
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