1-Out-of-n Check (Double-Activation Blocking)
The double-activation blocking prevents 2 commands from being executed in the device simultaneously. You
can set the device-internal check for each switching device as a parameter in the Control function block.
The default setting is Yes, that is, double-activation blocking is active (see the figure below).
[scdoppel-260912-01.tif, 1, en_US]
Figure 6-44 Activating the Double-Activation Blocking
With SIPROTEC 5, it is also possible to achieve multibay double-activation blocking.
In this case, send the signal not selected to other devices for analysis using IEC 61850-GOOSE. This signal
is available under Position in every Circuit-breaker or Disconnector function block in the switching device
function groups (see figure below).
[scnotselected-090315_de, 1, en_US]
Figure 6-45
Signal
Not selected
in the Circuit-Breaker Function Block
The signal is then queried in the CFC interlocking conditions for the associated switching devices and is used
to generate the release signal (for example, >Release on).
External 1-of-N Check (Cross-Bay Double-Activation Blocking)
The function block Ext. 1-of-N check offers another option to implement a cross-bay 1-out-of-n check. You
can select this function block in the FG Circuit breaker – Control in the DIGSI library. This function makes it
possible to interlock other switching devices across all bays before the allocation of the switching device takes
place in its own assigned bay or before the switching operation can be executed.
Control Functions
6.3 Control Functionality
350 SIPROTEC 5, High-Voltage Bay Controller, Manual
C53000-G5040-C015-9, Edition 11.2017
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