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Power quality analysis using spectrogram and gabor transformation

Abdullah, Abdul Rahim and Sha`ameri, Ahmad Zuri and Mohd Saad, Norhashimah (2007) Power quality analysis using spectrogram and gabor transformation. In: Applied Electromagnetics, 2007. APACE 2007. Asia-Pacific Conference, 4-6 Dec 2007, Melaka, Malaysia.

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Official URL: http://dx.doi.org/10.1109/APACE.2007.4603964

Abstract

This paper discusses the implementation of time-frequency analysis techniques to analyze power quality disturbances. The approached methods are spectrogram and Gabor transform algorithms. Signal parameters such as time marginal and frequency marginal are extracted from the time-frequency distributions. The parameters are analyzed in terms of correctness measurement of root mean square (RMS), total harmonic distortion (THD), total waveform distortion (TWD) and total interharmonic distortion (TnHD) values. Power quality events that are analyzed are swell, sag, interruption, harmonic, interharmonic, transient, notching and normal voltage. The results show that Gabor transform provides better performance in terms of correctness of parameters measurement, window length, frequency resolution and memory size.

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:Gabor transform algorithm, frequency marginal, power quality analysis, power quality disturbances, root mean square, signal parameters, spectrogram algorithm, time marginal, time-frequency analysis techniques, time-frequency distributions, total harmonic distortion, total interharmonic distortion, total waveform distortion
Subjects:T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions:Electrical Engineering
ID Code:7479
Deposited By: Norhafizah Hussin
Deposited On:06 Jan 2009 02:49
Last Modified:17 Feb 2012 05:30

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