| 一种高精度电力谐波检测法 |
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| 引用本文： | 何光普,张建平,李敏. 一种高精度电力谐波检测法[J]. 微计算机信息, 2007, 23(22): 303-304,309 |
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| 作者姓名： | 何光普 张建平 李敏 |
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| 作者单位： | 乐山师范学院,物理与电子信息科学系,四川乐山,614004 |
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| 摘 要： | 本文介绍了一种基于小波分析的谐波检测方法。小波多分辨分析可以对信号进行有效的时频分解，因而能将信号的不同频率成分分开。检测小波变换系数模的局部极值点可以检测到信号的突变点，即检测到信号频率跳变的时间，这是FFT谐波检测不能实现的。文中采用MATLAB小波分析工具箱对该方法进行了实验验证。
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| 关 键 词： | 谐波检测 突变点检测 多分辨分析 |
| 文章编号： | 1008-0570（2007）08-1-0303-02 |
| 修稿时间： | 2007-05-232007-06-25 |
A Precise Method for Detecting Harmonic Wave in Electric Power System |
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| HE GUANGPU,ZHANG JIANPING,LI MIN. A Precise Method for Detecting Harmonic Wave in Electric Power System[J]. Control & Automation, 2007, 23(22): 303-304,309 |
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| Authors: | HE GUANGPU ZHANG JIANPING LI MIN |
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| Affiliation: | Physics and Electron Communication Department of Leshan Teachers College, Sichuan Leshan,614004 |
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| Abstract: | This paper introduces a harmonic detection method based on wavelet transform. Multi-resolution analysis can decompose signal both in the field of time and in the field of frequency, which can detach all kinds of frequencies. By inspecting the part extremum pattern of wavelet coefficient can detection the time that frequency changes that FFT can not do. The paper also gives the test result, using wavelet toolbox of matlab. |
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| Keywords: | harmonic detection discontinuity detection multi-resolution analysis |
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