Comparison between discrete STFT and wavelets for the analysis of power quality events

被引：189

作者：

Jurado, F ^{[1
]}

Saenz, JR ^{[1
]}

机构：

[1] Univ Jaen, Dept Elect Engn, Jaen 23700, Spain

来源：

ELECTRIC POWER SYSTEMS RESEARCH | 2002年 / 62卷 / 03期

关键词：

discrete short-time Fourier transforms; power quality; wavelet transforms;

D O I：

10.1016/S0378-7796(02)00035-4

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 [电气工程]; 0809 [电子科学与技术];

摘要：

This paper deals with the comparison of signal processing tools for power quality analysis. Two signal processing techniques are considered: the wavelet filters and the discrete short-time Fourier transforms. Then, examples of the two most frequent disturbances met in the power system are chosen. It is designed an adjustable speed drive with a six-pulse converter using EMTP/ATP and it is presented normal energizing of utility capacitors. The analysis is tested on a system consists of 13 buses and is representative of a medium-sized industrial plant. Finally, each kind of electrical disturbance is analyzed with example representing each tool. A qualitative comparison of results shows the advantages and drawbacks of each signal processing technique applied to power quality analysis. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：183 / 190

页数：8

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