电力系统保护与控制2017，Vol.45Issue(7)：108-113,6.DOI:10.7667/PSPC160524
基于五项MSD窗三谱线插值的高精度谐波分析算法
High accuracy analysis of harmonic algorithm based on 5-term maximum-sidelobe-decay window and triple-spectrum-line interpolation
史丽萍 1谢强 1马晓伟1
作者信息
- 1. 中国矿业大学信息与电气工程学院,江苏 徐州 221116
- 折叠
摘要
Abstract
In order to solve the problems of fence effect and spectral leakage in Fast Fourier Transform analysis, an approach of high accuracy harmonic analysis is proposed, which bases on 5-term Maximum-Sidelobe-Decay window and triple-spectrum-line interpolation. It analyzes the window function and other commonly used window function in terms of time and frequency domain, reflecting the excellent characteristics of the sidelobe in the window function. It uses the cftool tool in Matlab to fit the modified formula of the algorithm. Then, it analyzes the general signal and signal of frequency change with the method, comparing with other several commonly used window function and interpolation algorithm results, this method shows a higher accuracy performance. In high accuracy analysis of harmonic algorithm based on 5-term MSD window and interpolation, the relative error of the amplitude has reached 10-9%, and it also has a good performance when frequency fluctuation happens.关键词
谐波分析/插值/快速傅里叶变换/电力系统/高精度Key words
harmonic analysis/interpolation/fast Fourier transform/power system/high accuracy引用本文复制引用
史丽萍,谢强,马晓伟..基于五项MSD窗三谱线插值的高精度谐波分析算法[J].电力系统保护与控制,2017,45(7):108-113,6.
