Abstract：When the classical fast Fourier transform method is used to estimate the power harmonic parameters, the fence effect and the spectrum leakage due to non integer period truncation and asynchronous sampling can cause estimation error. To improve the accuracy of harmonic parameter estimation, combined with the advantages of self-multiplication and self-convolution window, a self-multiplication-convolution window was designed based on Rife-Vincent window. With good sidelobe characteristics， the proposed window could effectively suppress spectrum leakage. The estimation formulas of harmonic amplitude, frequency and phase were obtained based on three spectral line interpolation and least square fitting. The simulation experiments were performed under the conditions of complex harmonics, interharmonics and fundamental frequency fluctuations with weak amplitudes. The results show that the proposed algorithm has higher detection accuracy than the classical windowed algorithm.
雷可君， 李明皓， 汪旭明， 陈乾明， 张志威， 杨喜. 基于Rife-Vincent自乘-卷积窗三谱线插值的电力谐波参数估计[J]. 江苏大学学报（自然科学版）, 2022, 43(5): 547-553.
LEI Kejun， LI Minghao, WANG Xuming, CHEN Qianming, ZHANG Zhiwei, YANG Xi. Power harmonic parameter estimation based on three spectral line interpolation of self-multiplication-convolution Rife-Vincent window[J]. Journal of Jiangsu University(Natural Science Eidtion)
, 2022, 43(5): 547-553.
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