Harmonics; Flicker; Soe - Sequence Of Events Records - GE RPV311 Technical Manual

Chapter 6 – Records
4.2

Harmonics

4.3

Flicker

5

SOE - Sequence of Events Records

138
Current total harmonic
distortion
Fundamental active
Power
Fundamental reactive
Power
DC transducers
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.
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 ��
��
��
every = 100 ms.
2
A Fourier transform is used to obtain all frequency components of the input signal up
��ℎ
to the 50 order.
The values obtained at every measuring window are aggregated over ��
Values resulting of the ��
10 min using classifiers. The result is the cumulative probability for each harmonic
component of the input signal.
For each harmonic component of the input signal, the value that does not exceed the
�� = 1, 10, 50, 90, 95, and 99 % percentiles in the ��
Flicker is computed for phases A, B, and C for up to six voltage circuits. The algorithm
used conforms to IEC 61000-4-15:1997+A1:2003.
The aggregation time interval is 10 minutes in the Pst Flicker or Plt Flicker 2 hours,
synchronized to UTC minute rollover. The timestamp refers to the end of the
averaging window.
It generates one record per day.
All variations of the equipment inputs occurred are recorded on this record.
The events in the SOE are recorded with accuracy better than 100µs.
It generates one record per day.
Quadratic average
Simple average
Simple average
Simple average
= 3 s aggregation are aggregated a second time over ��
vs
= 200 ms, overlapped
��
vs
time interval is recorded.
sh
RPV311-TM-EN-7
RPV311
= 3 s.
=
sh