小波变换在工业系统电磁兼容和电能质量研究中的应用

2009 International Conference on Advances in Computational Tools for Engineering Applications Pub Date : 2009-07-15 DOI:10.1109/ACTEA.2009.5227896

G. Bousaleh, F. Hassoun, T. Ibrahim

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引用次数: 8

摘要

本文介绍了小波变换的基本原理及其在电磁兼容领域中的应用。这种变换将允许同时探索给定信号的频率和时间特征，克服傅里叶变换的局限性。我们研究了小波在处理影响配电系统功率信号质量的扰动(电压降、高压、谐波色散等)中的应用。利用MATLAB工具箱开发了离散小波变换(DWT)分析方法。这些例子将由STFT和DWT处理。将对结果进行比较。最后，为了描述输电线路中的内部故障，将给出一个小波变换的应用实例。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Application of Wavelet Transform in the field of Electromagnetic Compatibility and power quality of industrial systems

In this paper, we present the theory behind the Wavelet Transformation (WT) and its applications in the field of Electromagnetic Compatibility. This transformation will allow the exploration of both frequency and time characteristics of a given signal at the same time, overcoming the limitations of the Fourier Transform. We examine the application of wavelets in the treatment of perturbations affecting the quality of the power signal of the electric distribution systems (voltage dips, high voltage, harmonic dispersion..). The method was developed by using the MATLAB toolbox for discrete wavelet transform (DWT) analysis. The examples will be treated by both the STFT and the DWT. A comparison of the results will be presented. Finally, an application example of the DWT will be presented in order to characterize an internal fault in the transmission lines.

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2009 International Conference on Advances in Computational Tools for Engineering Applications

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