电测与仪表2017，Vol.54Issue(10)：80-86,7.
基于CEEMD与改进Prony的谐波检测方法
A harmonic detection method based on CEEMD and the improved Prony algorithm
摘要
Abstract
To solve the problem that the mode mixing phenomenon of empirical mode decomposition (EMD) in processing the non-linear and non-stationary signal and the anti-noise performance of traditional Prony method is not insufficient,on this basis,this paper presented a new method of harmonic detection based on complete ensemble empirical mode decomposition (CEEMD) and the improved Prony method.Firstly,the harmonic signal with noise is decomposed into intrinsic mode function (IMF) by CEEMD.And then,the obtained IMF component carries on threshold de-noising based on energy threshold method.Given the original Prony method,the solving process of the actual order and the linear prediction parameters are optimized.At last,the harmonic components after de-noising are detected and analyzed by improved Prony method.The MATLAB simulation experiment and the measurement data of three-phase uncontrollable load verify that this method can not only accurately identify the characteristic parameters of harmonics,but also has good anti-noise performance,which provides a new way for the harmonic analysis.关键词
谐波检测/完全经验模态分解/Prony方法/检测精度/抗噪性能Key words
harmonic detecting/CEEMD/Prony method/accuracy detection/anti-noise performance分类
信息技术与安全科学引用本文复制引用
吴新忠,邢强,周涛,成江洋..基于CEEMD与改进Prony的谐波检测方法[J].电测与仪表,2017,54(10):80-86,7.基金项目
教育部中央高校基本科研业务费专项资金资助项目(2013QNA50) （2013QNA50）
江苏省自然科学基金资助项目(BK20130205) （BK20130205）
