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As can be seen in the CFC chart, the result of the check is connected to the >Release on signal in the
Interlocking function block in the Circuit breaker QA function group (see
EXAMPLE
For system interlocking
This example considers the feeder = E01 from the previous example (bay interlocking) and additionally the
coupler bay = E02 (see the figure below).
[ScAnlage-270410-deDE-01, 1, en_US]
Figure 8-42
The circuit breaker QA in coupler bay = E02 will be considered next. As the multibay interlocking condition,
you must provide the bus-coupler circuit-breaker command block at the end:
If the 2 busbars in bay = E01 are connected, that is, if the 2 disconnectors QB1 and QB2 in bay =E01 are
closed, the circuit breaker QA in bay = E02 is not allowed to be switched off. Accordingly, bay = E01 in the CFC
of the device generates the indication
QB2 and, using IEC 61850-GOOSE, transmits it to bay = E02 in the device. You must then store the following
interlocking condition in bay = E02:
QA_Off = NOT (= E01/Bus coupler closed)
In the CFC chart for the coupling device = E02, you must create the following CFC chart (see the figure below).
[scplanve-241013, 1, en_US]
Figure 8-43
SIPROTEC 5, Overcurrent Protection, Manual
C53000-G5040-C017-8, Edition 07.2017
System with Feeder and Coupler Bays
Bus coupler closed from the positions of the switches QB1 and
Interlocking Chart for Substation Interlocking
Control Functions
8.3 Control Functionality
Figure
8-41).
1119
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