Description
Logic of the Stage
[lo3phasi-090611-01.tif, 3, en_US]
Figure 7-141
Logic Diagram of the Definite-Time Overvoltage Protection with 3-Phase Voltage
Method of Measurement
Use the Method of measurement parameter to define whether the stage uses the fundamental comp.
or the RMS value.
•
Measurement fundamental comp.:
This method of measurement processes the sampled voltage values and filters out the fundamental
component numerically.
•
Measurement RMS value:
This method of measurement determines the voltage amplitude from the sampled values according to
the defining equation of the RMS value. Harmonics are included in the analysis.
7.13.3
Protection and Automation Functions
7.13 Overvoltage Protection with 3-Phase Voltage
784 SIPROTEC 5, High-Voltage Bay Controller, Manual
C53000-G5040-C015-9, Edition 11.2017
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