Electromagnetic Compatibility Issues during Faults in Electric Power Systems M. Buzdugan, H. Balan and H. Laslo   2018/04/20

Abstract

The main objective of the paper is to assess the influence of power systems faults, namely short circuits, on electromagnetic compatibility compliance.
In the introductory section, the main concepts of electromagnetic compatibility are addressed, with a special stress on electromagnetic conducted emissions and interference.
The second section, devoted to experimental results, presents the measurements carried out on a 110/10 kV power transformer from a distribution station, during a single phase short-circuit. For high voltage measurements, a power quality analyzer is used. At the same time a spectrum analyzer registered the associated electromagnetic compatibility issues.
The main conclusion that should be drawn is that conducted electromagnetic emissions represent phenomena that are compulsory accompanying short-circuits and they cannot be mitigated in their propagation path by the inductive filtering capacity of the subsequent power transformers solely, and they most often reach the low voltage equipment connected to the power system. Therefore, in order to achieve electromagnetic compatibility compliance, extra-filtering measures have to be
taken.

Authors and affiliations

M. Buzdugan1, H. Balan1 and H. Laslo2
1.Technical University of Cluj-Napoca, (Romania)
2. Electroplus Ltd. Cluj-Napoca, (Romania)

Key words

Electromagnetic compatibility, conducted emissions, power stations, earth fault, insertion loss, EMI filtering.

References

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