Open AccessHarmonic detection algorithm based on Nuttall double-window all-phase Fast Fourier Transform trispectral interpolation
Author(s) -
Yukun Su,
Ruifen Cao,
Wenbo Hao,
Mingyu Xu,
Heng Hu,
Peng Jiang,
Feng Zhou
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2137/1/012053
Subject(s) - fast fourier transform , spectral leakage , algorithm , interpolation (computer graphics) , harmonic , amplitude , phase (matter) , mathematics , fourier transform , harmonic analysis , computer science , acoustics , physics , optics , telecommunications , mathematical analysis , frame (networking) , quantum mechanics
In harmonic detection of power grid, spectrum leakage of traditional FFT algorithm affects the accuracy of detection results. In this paper, a Nuttall double-window all-phase FFT trispectral interpolation algorithm is proposed. The phase of the spectral line with the maximum amplitude at the sampling point is taken as the initial phase of the signal, and the position of the main harmonic line is determined by using the amplitudes of the three spectral lines near the harmonic peak frequency point. Simulation results show that this algorithm can reduce the error of harmonic parameter detection more effectively and reduce the influence of white noise.