基于变换的电能质量分析方法的研究

对电能质量的分析方法进行综合性研究。分别对傅立叶变换和小波变换的基本概念和原理加以阐述,介绍了在谐波分析中最常用的FFT算法、各种改进的FFT算法在电能质量分析中的应用,以及小波变换在电能质量分析中的各种应用,并比较了傅立叶变换和小波变换的不同适用范围,最后,对电能质量问题研究方向提出了自己的看法。

Research of Transformation-Based Power Quality Analysis Method

The problem of power quality is paid more attention to in recent years. In traditional a-nalysis of power quality, the fourier transformation is the main algorithm to analyze the harmonics, but in transient power quality analysis, the wavelet transformation is widely used now. This paper expounds the basic conception and principle of fourier transformation and wavelet transformation, introduces the FFT transformation used in harmonics analysis, application in power quality analysis of some improved FFT algorithm, the purpose and essence of wavelet transformation, and the application of wavelet transformation in power quality analysis. It also compares the different application range of the two algorithms. Finally, it puts forward the ideas of the next research aim of the power quality problem.