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Real time pc implementation of power quality monitoring system based on multiharmonic least-squares fitting

Ardeleanu, A. S. A. ; Ramos, P.M.

Metrology and Measuring Systems Vol. XVIII, Nº 4, pp. 543 - 554, December, 2011.

ISSN (print): 0860-8229
ISSN (online): 0860-8229

Journal Impact Factor: 0,925 (in 2014)

Digital Object Identifier: 10.2478/v10178-011-0053-9

Abstract
In this paper, an algorithm that monitors the three phases of the power system to detect and classify power quality events in real time is presented. The algorithm is able to detect events caused by waveform distortions and variations of the RMS values of the voltage. Detection of the RMS events is done by comparing the RMS values with certain thresholds, while detection of waveform distortions is made using an algorithm based on multiharmonic leasts squares fitting.