Harmonic Source Location in the Distribution Grid Using Time- Synchronized Measurements S. Babaev1, V. Cuk, J.F.G. Cobben and H.E. van den Brom 2018/04/20

Abstract

A method for locating harmonic producing source in the low-voltage distribution network is presented. The method aims to employ natural load variability of the existing non-linear installations. By performing multi-point time-synchronized acquisition of the voltage and current waveforms and analysing spectral characteristics of the signals, harmonic impedance of the cable section associated with non-linear load is estimated. A certain rejection algorithm is applied in order to discard data sets with unreliable information. To validate the method, a field test was established in the low-voltage grid. The results demonstrate capability of the proposed technique to accurately estimate harmonic impedances and successfully identify location of harmonic current source in the grid.

Authors and affiliations

S. Babaev(1), V. Cuk(1), J.F.G. Cobben(1) and H.E. van den Brom(2)
1. Department of Electrical Engineering. Eindhoven University of Technology (TU/e). Eindhoven (Netherlands)
2. VSL. Delft (Netherlands)

Key words

Power quality, Power system harmonics, Impedance measurement, Power system measurements.

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