SATEC SA300 ezPAC Operation Manual - Manual (Page 97)

Chapter 8 Configuring Recorders Configuring the EN50160 Power Quality Recorder
SA300 Substation Automation Unit 97
Observation Period
The observation period is the period of time within which the voltage characteristics
shall be assessed to ensure compliance with the standard. The observation periods
declared by the EN50160 may differ for characteristics for which compliance limits
are specified in the standard, usually one week, and for those for which only
indicative values are provided, usually one year.
The EN50160 compliance reports produced by PAS provide correct weekly and
yearly observation statistics regardless of the evaluation periods used for collecting
data. Whenever needed, PAS aggregates records within a number of the evaluation
intervals to provide correct observation periods. Some of the characteristics, like
rapid voltage changes or mains signaling voltage, may require daily assessments. If
you intend to use daily-evaluated voltage characteristics, select the daily evaluation
period via the EN50160 Advanced setup.
EN50160 Compliance Statistics Log
Data log file #9 is automatically configured in the SA300 for recording EN50160
compliance statistics. Appendix D lists parameters recorded to the file. The file is
arranged as a multi-section data log file where each voltage characteristic statistics is
stored in a separate section. Along with EN50160 compliance statistics recorded at
the end of each evaluation period, file also contains data that may be useful for
troubleshooting power quality problems for non-compliant voltage characteristics.
You can upload and view the EN50160 compliance statistics data via PAS reports or
via common PAS data logs views.
EN50160 Harmonics Survey Log
Data log file #10 is automatically configured in the SA300 for recording harmonics
survey statistics on a weekly or daily basis. You can see parameters recorded to the
file in Appendix D. The file stores maximum THD (total, odd and even harmonics) and
maximum harmonic voltages up to order 50 collected within each evaluation period.
Harmonics survey is normally intended for troubleshooting harmonic problems
throughout electrical networks. It can be separately disabled or enabled in your
device via the EN50160 Advanced Setup. The evaluation period for harmonics
survey can be selected independently from the EN50160 compliance evaluation.
You can upload and view the harmonics survey data collected by your device via
PAS reports or via common PAS data logs views.
EN50160 Power Quality Event Log
The SA300 provides the EN50160 Power Quality (PQ) recorder that can detect
EN50160 incidents and record each individual power quality event to the log file with
the start and end timestamps and a fault magnitude. It may be useful for
troubleshooting problems throughout the electrical network, for example, to identify
and locate the source of a power quality event and to select an appropriate solution.
The EN50160 power quality report can be uploaded and viewed via PAS (see
Viewing EN50160 Power Quality Event Log ). Transient overvoltages and short-
duration voltage dips and temporary overvoltages recorded to the file can also be
viewed in PAS as magnitude/duration pairs on the well-known ITIC curve chart for
assessing the minimum equipment immunity.
The PQ recorder can trigger the waveform recorder to record the fault waveforms
before, during and after the PQ event for detailed event analysis.
Methods of Evaluation
This section describes methods used by the SA300 for evaluating supply voltage
characteristics to ensure compliance with the standard.