A Novel Interpolated FFT Algorithm Based on Convolution Window
FFT algorithm is widely used in power system harmonic analysis.But in traditional FFT,big harmonic measurement error appeared caused by spectral leakage & hurdle effect while unsynchronized sampling.In this paper,an improved algorithm is introduced,a FFT with convolution windows and interpolated value is proposed to improve measuring accuracy of frequency,harmonic phase and amplitude through additional windows & interpolated corrective value.Guyuan Power Grid parameters of Ningxia Province were used into simulation analysis,the verification between simulation results and actual test reports show that: improved algorithm effectively enhance the accuracy of harmonic measurement with very limited spectral leakages and hurdle effects,and meanwhile simplified the whole operation.
electrical power system harmonic analysis convolution window interpolated FFT algorithm spectral leakage hurdle effects
Dong Hui Wang Chaoxue
School of Automation, Northwestern Polytechnical University, Xian 710072, China;School of Informati School of Information & Control Engineering, Xian University of Architecture and Technology, Xian
国际会议
2012 IEEE 14th International Conference on Communication Technology(2012年第十四届通信技术国际会议(ICCT 2012))
成都
英文
1231-1234
2012-11-09(万方平台首次上网日期,不代表论文的发表时间)