Power quality analysis using s-transform

Dash, P. K. and Panigrahi, B. K. and Panda, G. (2003) Power quality analysis using s-transform. IEEE Transactions on Power Delivery, 18 (2). pp. 406-411. ISSN 0885-8977

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Official URL: http://dx.doi.org/10.1109/TPWRD.2003.809616

Abstract

This paper presents a new approach for power quality analysis using a modified wavelet transform known as S-transform. The local spectral information of the wavelet transform can, with slight modification, be used to perform local cross spectral analysis with very good time resolution. The phase correction" absolutely references the phase of the wavelet transform to the zero time point, thus assuring that the amplitude peaks are regions of stationary phase. The excellent time-frequency resolution characteristic of the S-transform makes it an attractive candidate for analysis of power system disturbance signals. Several power quality problems are analyzed using both the S-transform and discrete wavelet transform, showing clearly the advantage of the S-transform in detecting, localizing, and classifying the power quality problems.

Item Type: Article
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Depositing User: Ms Rosnani Abd Wahab
Date Deposited: 23 Aug 2011 06:52
Last Modified: 09 Jan 2014 04:09
URI: http://shdl.mmu.edu.my/id/eprint/2573

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