Alstom Reason RPV311 - Steady-State Records; Average Series Harmonics Flicker

RPV311
Chapter 6 – Records
RPV311-TM-EN-6
165
5 STEADY-STATE RECORDS
Steady-state records can be created by the following means:
 Average Series;
 Harmonics;
 Flicker.
5.1 AVERAGE SERIES
The equipment continuously records averaged values of
Values of average series recorder
RMS (voltage)
Simple average
RMS (current)
Simple average
Voltage imbalance
Simple average
Frequency
Simple average
Voltage total harmonic distortion
Quadratic average
Current total harmonic distortion
Quadratic average
Fundamental active Power
Simple average
Fundamental reactive Power
Simple average
DC transducers
Simple average
The aggregation time interval is user-selectable between 1 minute or 10 minutes, synchronized to UTC
minute rollover. The timestamp refers to the end of the averaging window.
It generates one record per day.
5.2 HARMONICS
Harmonics are computed for phases A, B and C and for the neutral of up to two voltage or current circuits.
The algorithm used conforms to IEC 61000-4-7:1991.
The signal is band-limited by Hanning-windows with width 

= 200 ms, overlapped every



= 100 ms.