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Input position (Value)
Signal quality
Output OPENPOS
Output CLOSEPOS
0 (Breaker intermediate)
Good
0
0
1 (Breaker open)
Good
1
0
2 (Breaker closed)
Good
0
1
3 (Breaker faulty)
Good
0
0
Any
Invalid
0
0
Any
Oscillatory
0
0
10.4.11.5
Signals
Table 225:
POS_EVAL Input signals
Name
Type
Default
Description
POSITION
INTEGER
0
Position status including quality
Table 226:
POS_EVAL Output signals
Name
Type
Description
OPENPOS
BOOLEAN
Open position
CLOSEPOS
BOOLEAN
Close position
10.4.11.6
Settings
The function does not have any settings available in Local HMI or Protection and Control
IED Manager (PCM600).
10.4.12
Operation principle
The interlocking function consists of software modules located in each control IED. The
function is distributed and not dependent on any central function. Communication
between modules in different bays is performed via the station bus.
The reservation function is used to ensure that HV apparatuses that might affect the
interlock are blocked during the time gap, which arises between position updates. This can
be done by means of the communication system, reserving all HV apparatuses that might
influence the interlocking condition of the intended operation. The reservation is
maintained until the operation is performed.
After the selection and reservation of an apparatus, the function has complete data on the
status of all apparatuses in the switchyard that are affected by the selection. Other
operators cannot interfere with the reserved apparatus or the status of switching devices
that may affect it.
Section 10
1MRK 511 287-UUS A
Control
342
Technical manual
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