电工技术学报2018，Vol.33Issue(3)：553-562,10.DOI:10.19595/j.cnki.1000-6753.tces.161693
一种用于谐波分析的高精度多谱线插值算法
A High Accuracy Multi-Spectrum-Line Interpolation Algorithm for Harmonic Analysis
摘要
Abstract
In order to reduce the influence of the fast Fourier transform on spectrum leakage,caused by non-synchronous sampling,and to improve the accuracy of harmonic analysis,a multi-spectrum-line interpolation algorithm with high precision was proposed.By analyzing the possibility of spectral distribution near the discrete frequency point of the windowed signal,paper used six spectral lines near the peak spectral line to calculate the harmonic information,fully considered the harmonic information of these lines.And different correction formula was given,based on different leakage conditions respectively.The multi-spectrum-line interpolation algorithm and the fitting process of correction formula was deduced in detail.Then the numerical simulation and experimental platform were set up,and studied the influences of fundamental frequency fluctuation and the non-integer harmonics on the accuracy of algorithm.Simulation and experimental results demonstrate that the proposed multi-spectrum-line interpolation algorithm is effective and has excellent accuracy.关键词
快速傅里叶变换/频谱泄露/谐波分析/高精度/多谱线插值Key words
Fast Fourier transform/spectrum leakage/harmonic analysis/high accuracy/multi-spectrum-line interpolation分类
信息技术与安全科学引用本文复制引用
王保帅,肖霞..一种用于谐波分析的高精度多谱线插值算法[J].电工技术学报,2018,33(3):553-562,10.基金项目
国家自然科学基金青年基金资助项目(51307066). （51307066）
