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电力系统谐波分析的高精度FFT算法
引用本文:张伏生,耿中行,葛耀中.电力系统谐波分析的高精度FFT算法[J].中国电机工程学报,1999,19(3):63-66.
作者姓名:张伏生  耿中行  葛耀中
作者单位:1. 西安交通大学电力工程系,710049,西安
2. 西安交通大学电力工程系,710049,西安;空军装备技术部第一研究所,100076,北京
摘    要:快速搏立叶变换存在较大的误差,无法直接用于电力系统谐波分析。本文对FFT的泄漏误差进行了分析,根据JAINT randke提出的插值算法提出了多项余弦窗插值的新算法,对FFT的结果进行修正,极大地提高了计算精度,使之适用于电力系统的准确谐波分析。

关 键 词:电力系统  谐波分析  FFT算法  精度

FFT ALGORITHM WITH HIGH ACCURACY FOR HARMONIC ANALYSIS IN POWER SYSTEM
Zhang Fusheng,Geng Zhongxing,Ge Yaozhong.FFT ALGORITHM WITH HIGH ACCURACY FOR HARMONIC ANALYSIS IN POWER SYSTEM[J].Proceedings of the CSEE,1999,19(3):63-66.
Authors:Zhang Fusheng  Geng Zhongxing  Ge Yaozhong
Abstract:The FFT has a higher error in the harmonic analysis of the electric power system, especially for the phases. This paper discussed the leakage of FFT and presented a new amending algorithm, poly-cosin window interpolation, which based on the interpolating algorithm proposed by K. Jain and T. Grandke. This new algorithm obviously improves the accuracy of the FFT, so it can be applied to the precision analysis for electrical harmonic. The simulating result shows that applying deferent windows has the deferent effects to the accuracy, and the Blackman-Harris window has the highest accuracy.
Keywords:Fourier transform  Electric power system  Harmonic  
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