Frequency Shifting And Filtering Algorithm for Power System Harmonic Estimation

被引：0
|
作者：
Zhang, Junhao [1 ]
Wen, He [1 ]
Tang, Lu [1 ]
Teng, Zhaosheng [1 ]
Chen, Zhou [1 ]
机构：
[1] Hunan Univ, Coll Elect & Informat Engn, Changsha, Hunan, Peoples R China
来源：
2017 IEEE INTERNATIONAL WORKSHOP ON APPLIED MEASUREMENTS FOR POWER SYSTEMS (AMPS) | 2017年
关键词：
Harmonic estimation; Windowed Interpolation FFT; Frequency Shifting; Smoothing Filtering;
D O I：
暂无
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
Spectral leakage and picket fence effect in Fourier transform will affect the accuracy of harmonic analysis under asynchronous sampling. To overcome this defect, a novel algorithm for power system harmonic analysis called Frequency Shifting and Filtering (FSF) algorithm is proposed in this paper. In this method, a reference signal is given to shift the frequency of original signal. And then the filter process based on iterative smoothing filter is adopted to eliminate the interference components. Finally, accurate results of harmonic parameters could be obtained by calculating the variations between original and frequency shifting signal. Simulation results have validated that the proposed algorithm can increase the accuracy of harmonic analysis efficiently.
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页码：48 / 53
页数：6
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