| 一种谐波电流的检测方法 |
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| 引用本文： | 粟梅,杨文. 一种谐波电流的检测方法[J]. 控制工程, 2005, 12(2): 190-192 |
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| 作者姓名： | 粟梅 杨文 |
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| 作者单位： | 中南大学,信息科学与工程学院,湖南,长沙,410083;中南大学,信息科学与工程学院,湖南,长沙,410083 |
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| 摘 要： | 采用小波变换对电力系统中的谐波电流进行滤波，对检测出的基波电流进行了误差分析。小波变换具有良好的时频局部化特性，克服了传统FFT法仅有频域局部化的缺点，对于闪变信号十分敏感。仿真结果表明，此方法可以很好地跟踪时变谐波，准确检测出闪变电流信号，可以满足有源滤波器(APF)的实时检测要求。
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| 关 键 词： | 谐波检测 小波变换 有源滤波器 |
| 文章编号： | 1671-7848(2005)02-0190-03 |
| 修稿时间： | 2004-06-02 |
A Detecting Method for the Harmonic Currents in Power Networks |
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| SU Mei,YANG Wen. A Detecting Method for the Harmonic Currents in Power Networks[J]. Control Engineering of China, 2005, 12(2): 190-192 |
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| Authors: | SU Mei YANG Wen |
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| Abstract: | A method for detecting harmonic current in power system is presented by means of wavelet transformation.In view of the detecting results and experimental data,the phase error and the range error of base wave are analyzed.The wavelet transformation possesses the excellent time-frequency characteristic,and conquers the localized frequency drawback of conventional FFT method and it is sensitive to flicker signal.Simulation results show,that this method can track the harmonic current quickly,detect the flash current nicety,and satisfy the real-time detecting demand of active power filter(APF). |
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| Keywords: | harmonic current detecting wavelet transformation active power filter |
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