电力系统保护与控制2012，Vol.40Issue(5)：75-79,5.
基于FFT和小波包变换的电力系统谐波检测方法
Detection of harmonic in power system based on FFT and wavelet packet
摘要
Abstract
In view of the fences phenomenon, spectrum leakage and issues of slow identification and location and weak real-time performance caused by complicated computation that exist in the harmonic detection, a comprehensive harmonic detection method is presented based on FFT and wavelet packet transform. This method uses the excellent amplitude frequency characteristics of FFT to identify the harmonic component, uses the excellent time-frequency characteristics of wavelet packet to locate the time of harmonic occurrence and end quickly and selectively, at the same time extracts the contained harmonic component, so that it can reduce the computation and improve the real-time performance of the harmonic detection. Using Matlab to simulate the comprehensive harmonic detection method, it shows that the comprehensive harmonic detection method is more effective than the common detection methods.关键词
电力系统/电能质量/谐波/傅里叶变换/小波包变换Key words
power system/ power quality/ harmonic/ FFT/ wavelet packet transform分类
信息技术与安全科学引用本文复制引用
房国志,杨超,赵洪..基于FFT和小波包变换的电力系统谐波检测方法[J].电力系统保护与控制,2012,40(5):75-79,5.基金项目
国家高新技术研究发展计划(863计划)(2007AA042105) （863计划）
