| 基于傅里叶和小波变换的电网谐波分析 |
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| 引用本文： | 周厚奎,张昱,金心宇. 基于傅里叶和小波变换的电网谐波分析[J]. 电力系统及其自动化学报, 2005, 17(6): 59-62,99 |
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| 作者姓名： | 周厚奎 张昱 金心宇 |
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| 作者单位： | 浙江大学信息科学与工程学院,杭州,310027 |
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| 摘 要： | 正确提取电网谐波是进行电能质量分析的前提.根据电网谐波中既存在稳态谐波分量又有暂态谐波分量的特点,将傅里叶变换和小波变换方法结合起来对电网谐波进行分析,得出谐波分析的傅里叶小波综合算法.通过对单独傅里叶变换以及单独小波变换的对比分析,得知该文算法的优越性.同时通过对具体信号的仿真,验证了该算法的可行性.
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| 关 键 词： | 电能质量 谐波 傅立叶变换 小波变换 |
| 文章编号： | 1003-8930（2005）06-0059-04 |
| 收稿时间： | 2005-01-17 |
| 修稿时间： | 2005-01-172005-03-25 |
Power Harmonic Analysis Based on Fourier and Wavelet Transform |
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| ZHOU Hou-kui,ZHANG Yu,JIN Xin-yu. Power Harmonic Analysis Based on Fourier and Wavelet Transform[J]. Proceedings of the CSU-EPSA, 2005, 17(6): 59-62,99 |
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| Authors: | ZHOU Hou-kui ZHANG Yu JIN Xin-yu |
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| Affiliation: | College of Information Science and Engineering,Zhejiang University, Hangzhou 310027, China |
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| Abstract: | Exactly decomposing the harmonic component is the precondition to power quality analysis. Fourier and wavelet transform are two types of most popular used method for power harmonic analysis. According to the characteristic of power harmonic which includes steady and momentary components, above two methods are integrated and applied to power harmonic analysis ,comprenhensive algorithm of Fourier and wavelet transform is presented. It has many advantages compared with using FFT and wavelet transform respectively. The proposed method is validated by simulation. |
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| Keywords: | power quality harmonic Fourier transform wavelet transform |
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