Voltage Measuring-Point Selection
Overview of Functions
The function block Voltage measuring-point selection can:
•
Provide the ability to switchover the voltage measuring points to be applied, if various voltage measuring
points are connected to the voltage interface of the function group
•
Select the correct voltage based on the switch position of the plant
If more than one voltage measuring points are connected to the same voltage interface of the function group,
use the Voltage measuring-point selection function block in the function group to select the correct voltage
based on the switch position of the plant.
The Voltage measuring-point selection is a common functionality for the function groups of the protected
objects.
Function Description
The Voltage measuring-point selection function block realizes the selection of voltage measuring points by a
logic block chart. The logic block chart controls the input
>MP-ID selection
depending on the switch posi-
tions of disconnectors.
Example
Figure 6-334 shows an example of voltage measuring points selection for the function group Capacitor bank
in a double busbar application.
[dwbusbardouble.vsd, 2, en_US]
Figure 6-334
Double Busbar with Capacitor Bank
Connecting Measuring Points to Capacitor Bank Function Group
Figure 6-335 shows the connection of the function group Capacitor bank with several measuring points in
DIGSI. The ID of each measuring point appears in the bracket after the name.
6.51
6.51.1
6.51.2
Protection and Automation Functions
6.51 Voltage Measuring-Point Selection
SIPROTEC 5, Overcurrent Protection, Manual 963
C53000-G5040-C017-8, Edition 07.2017
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