Siemens SIMEAS Q80 7KG8080 Betriebsanleitung Seite 133

E-56 SIMEAS Q80 7KG8080
11.1.5 Data
As various as are the properties which can characterize the quality of electric energy supply networks are also the
data which SIMEAS Q80 7KG8080 returns. Analysis by SIMEAS Q80 Manager software provides you with up to 600
different curves subsequent to a measurement. For this reason it makes sense to invest some effort in
systematization in order to find your way through such a maze of curves.
11.1.5.1 Time resolution
Many network quality attributes (e.g. transients) require very detailed display, while for others (e.g. slow changes),
aggregation over 10 minutes are adequate. In total, four different resolution levels can result, depending on the
calculation technique used. Bold and italic entries are required for the EN 50160.
Time resolution of data
Resolution
10 min Values over the selected aggregation interval
(default = 10 Min)
10 s Values over the selected aggregation interval f
(default = 10 s)
Sample of the demodulated impulse sequence (filter result of the
10 / 1 2
amplitude modulated signal frequency)
c y c l e s
rms1/2 Value of the r.m.s. voltage measured over 1 cycle, commencing at a
fundamental zero crossing, and refreshed each half cycle.
100 µs Input samples and derived quantities without data reduction
11.1.5.2 Curve types
Curves with high time resolution require large amounts of memory. For this reason, curve segments whose
information content is large are given preference over relatively unimportant segments (trigger, data reduction). This
produces special curve types. Additionally, complex numbers are used because they can conveniently record power
values.
Curve type
equidistant curves with constant X-difference between
consecutive data points
(normal)
reduced curve plots with two values per point:
(XY) amplitude and time
triggered curves consisting of multiple sequences
(events)
complex curves with Real and Imaginary parts (or
magnitude and phase)
(RI, MP)
Power Quality Recorder SIMEAS Q80 7KG8080, Operating instruction
E50417-B1074-C419-A1, Release 07.05.2010
Significance
Function
Examples
mean values, flicker
Frequency
Ripple control signal
data-reduced RMS-values
recording of instantaneous
value (curve shape)
Examples
mean values, max – min values, flicker,
histograms
RMS-values (event recognition)
recording of instantaneous values (curve
shape)
power (active, reactive power)