山东电力技术2025，Vol.52Issue(6)：44-51,8.DOI:10.20097/j.cnki.issn1007-9904.2025.06.005
基于二阶混合卷积窗双谱线插值的谐波检测算法
Harmonic Detection Algorithm Based on Second-order Hybrid Convolutional Window Bispectral Line Interpolation
龙艳萍1
作者信息
- 1. 济南工程职业技术学院机电工程学院,山东 济南 250200
- 折叠
摘要
Abstract
In harmonic analysis of power system,spectrum leakage and fence effect pose significant challenges to the accuracy of signal detection.In order to effectively reduce the influence of spectrum leakage and fence effect on harmonic detection,a second-order hybrid convolution window bispectral interpolation algorithm based on Hanning window and five-term Maximum-sidelobe-decay(MSD)window is constructed.The algorithm not only ensures that the width of the main lobe meets the requirements,but also significantly improves the sidelobe characteristics,and the bispectral interpolation algorithm can detect the amplitude,phase and frequency of complex harmonic signals more accurately.The simulation analysis of complex harmonic signals shows that the proposed method has higher detection accuracy and stability when dealing with complex harmonic signals,especially in the presence of white noise interference.关键词
频谱泄漏/栅栏效应/Hanning窗/五项MSD窗/二阶混合卷积/双谱线插值/谐波信号Key words
spectrum leakage/Fence effect/Hanning window/five items MSD window/mixed convolution window/Bispectral interpolation/Harmonic signal分类
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龙艳萍..基于二阶混合卷积窗双谱线插值的谐波检测算法[J].山东电力技术,2025,52(6):44-51,8.
