Siemens 6MD85, Manual

Page: 349 / 1256

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 Figure 6-41 ).
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 6-42 System with Feeder and Coupler Bays
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
Bus coupler closed
from the positions of the switches QB1 and
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 6-43 Interlocking Chart for Substation Interlocking
Control Functions
6.3 Control Functionality
SIPROTEC 5, High-Voltage Bay Controller, Manual 349
C53000-G5040-C015-9, Edition 11.2017