基于傅立叶和小波变换的电网谐波检测  

The Electric Power System Harmonic Detecting Based on Fourier and Wavelet Transform

作　　者：杲秀芳[1] 曹建设[1] 

机构地区：[1]中铁第一勘察设计院集团有限公司,陕西西安710043

出　　处：《电力学报》2007年第4期460-463,共4页Journal of Electric Power

摘　　要：利用小波变换的奇异信号检测能力和较好的时域分辨率,结合傅立叶变换准确的频域分辨能力,提出了傅立叶和小波变换联合检测的改进算法,并通过仿真验证了算法的可行性。This paper advances Fourier and wavelet transform comprehensive detecting algorithm using the special effect on detecting singularity point and high resolving degree in time domain of wavelet, combined with the exact frequency resolving ability of fast Fourier transform. Example is given to show the correctness of the new method.

关 键 词：傅立叶变换 小波变换 谐波检测 

分 类 号：TM744[电气工程—电力系统及自动化]