电力系统保护与控制Issue(2)：33-39,7.
应用三谱线插值FFT分析电力谐波的改进算法
Improvement algorithm for harmonic analysis of power system using triple-spectrum-line interpolation algorithm based on window FFT
蔡晓峰 1张鸿博 2鲁改凤2
作者信息
- 1. 河南工程学院机械工程学院，河南 新郑 451191
- 2. 华北水利水电大学电力学院，河南 郑州 450011
- 折叠
摘要
Abstract
The principle of triple-spectrum-line interpolation algorithm based on window FFT is analyzed firstly. Aimed at its shortcomings of large computing capacity and much time consumption, frequency spectrum in main lobe of window function is analyzed, and a rule that the phase difference of any two adjacent spectrum lines in main lobe of window isπis derived. Based on the rule, an improved algorithm for triple-spectrum-line interpolation FFT is presented, which can reduce amount of solving amplitude to one-third of the normal one. Simulation and experiment shows that the improved algorithm is of high accuracy and small amount of calculation, and it is suitable for power harmonic analysis.关键词
谐波测量/快速傅立叶变换/窗函数/三谱线/插值Key words
harmonic analysis/FFT/window functions/triple-spectrum-line/interpolation分类
信息技术与安全科学引用本文复制引用
蔡晓峰,张鸿博,鲁改凤..应用三谱线插值FFT分析电力谐波的改进算法[J].电力系统保护与控制,2015,(2):33-39,7.
