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Optimum kernel parameters of smooth windowed wigner-ville distribution for quality analysis

Abdullah, A. R. and Ahmad, N. H. T. H. and Sha'ameri, Ahmad Zuri and Abidullah, N. A. and Jopri, M. H. and Shair, E. F. (2013) Optimum kernel parameters of smooth windowed wigner-ville distribution for quality analysis. Journal of Basic and Applied Physics, 2 (4). pp. 235-242. ISSN 2304-9340

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Abstract

Bilinear time-frequency distributions (TFDs) are developed to represent time-varying signal jointly in time frequency representation (TFR). The TFDs offer a good time and frequency resolution, are appropriate to analyze power quality signals that consist of magnitude variation and multiple frequencies. However, the TFD suffers from cross-terms interferences because of their bilinear structures. In this paper, smooth-windowed Wigner-Ville distribution (SWWVD) is used to analyze power quality signals. The power quality signals are swell, sag, interruption, harmonic, interharmonic and transient. To get an accurate TFR, the parameters of the separable kernel are estimated from the signal. A set of performance measures are defined and used to compare the TFR for various kernel parameters. The comparison shows the signals with different parameters require different kernel settings in order to get the optimal TFR.

Item Type:Article
Subjects:T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions:Electrical Engineering
ID Code:40956
Deposited By: Liza Porijo
Deposited On:20 Aug 2014 08:19
Last Modified:22 Aug 2017 08:19

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