| 电力系统谐波检测加窗插值算法及其Matlab实现 |
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| 引用本文： | 方磊,王英健,张玉环.电力系统谐波检测加窗插值算法及其Matlab实现[J].电瓷避雷器,2009(3). |
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| 作者姓名： | 方磊 王英健 张玉环 |
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| 作者单位： | 长沙理工大学电气与信息工程学院,长沙,410077 |
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| 摘 要： | 快速傅立叶变换是应用最广泛的一种谐波检测方法,但直接利用快速傅立叶变换进行谐波检测存在较大的误差,影响谐波分析结果的准确性。通过加窗以及插值修正算法可以改善计算谐波频率、相位和幅值的准确度。简述了电网谐波检测非同步采样加窗插值算法的原理,根据电力谐波信号特点选择了合适的窗函数及其插值修正公式。MATLAB仿真结果表明,快速傅立叶变换加窗插值算法具有检测精度高、实现简单、功能多的优点,同时也验证了该改进算法的有效性和易实现性。
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| 关 键 词： | 快速傅立叶变换 谐波检测 窗函数 插值 |
Power System Harmonics Measurement Window Interpolation Algorithm and the Realization with Matlab |
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| FANG Lei,WANG Ying-jian,ZHANG Yu-huan.Power System Harmonics Measurement Window Interpolation Algorithm and the Realization with Matlab[J].Insulators and Surge Arresters,2009(3). |
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| Authors: | FANG Lei WANG Ying-jian ZHANG Yu-huan |
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| Affiliation: | College of Electric & Information Engineering;Changsha University of Science & Technology;Changsha 410077;China |
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| Abstract: | FFT(Fast Fourier Transform)is a method that applies most extensively of the harmonic measurements.However,if FFT is used directly to harmonic measurement there will be a larger error that affects the accuracy of harmonic analysis.Some efforts have been made to correct the accuracy of frequency,phase and amplitude measured by FFT,including the utilization of window functions and interpolation algorithms.the principle of power grid harmonic detecting non-synchronous sampling window interpolation algorithm was... |
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| Keywords: | fast fourier transform harmonic analysis window functions interpolation |
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