Parameter: Control model
•
Default setting (_:105) Control model = SBO w. normal secur.
With the Control model parameter, you select between direct w. normal secur. or SBO w.
normal secur. to start the switching sequence.
It is not possible to set a control model for cancelation of the switching sequence. The control model direct
w. normal secur. is always used to cancel the function.
Information
The Switching sequence function block provides the following data:
[scinfof1-13112014, 1, en_US]
Figure 6-102 Data Provided by the Switching Sequence Function Block
In the Switching sequence function block, the interlocking is analog to the Interlocking function block and it
is possible to use it in the switching sequence:
•
>Enable start
: Connection to interlocking conditions (CFC) for the start of the entire switching
sequence. Not in effect in the non-interlocked switching mode.
•
>Enable start (fixed)
: Non-revocable interlocking conditions for the start of the entire switching
sequence. In effect regardless of the switching mode.
If the time-out monitoring is activated (parameter Time-out monitoring), the process feedback must take
place via the inputs
>Successful
and
>Failed
. If the last switching command of the switching sequence
was executed successfully, the input
>Successful
usually is set. To do this, connect the feedback of the last
switching command from the CFC with this input of the function block during the device parameterization.
If a switching command fails, this feedback can be captured by the input
>Failed
. The active switching
sequence will be ended immediately and does not have to wait for a time-out.
The indication
Execution
signals the current state of the switching sequence. The events
running
,
canceled
,
failed,
and
successful
are generated only while the time-out monitoring is activated. The
event
Start Trigger
is used to start the switching sequence in the CFC chart.
Example for a Switching Sequence with CFC
The following figure shows a single-line diagram for a substation with 4 bays: Busbar grounding, infeed, bus
coupler, and feeder bay.
Control Functions
6.5 Switching Sequences
428 SIPROTEC 5, High-Voltage Bay Controller, Manual
C53000-G5040-C015-9, Edition 11.2017
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