基于改进HHT的间谐波检测算法  

Inter-harmonics detection algorithm based on improved HHT

作　　者：范伟宁 陈红卫[1] Fan Weining;Chen Hongwei(School of Electronics and Information,Jiangsu of Science and Technology,Zhenjiang 212003,China)

机构地区：[1]江苏科技大学电子信息学院

出　　处：《电子测量技术》2018年第14期50-54,共5页Electronic Measurement Technology

摘　　要：针对经典希尔伯特-黄（HHT）算法存在对噪声敏感以及经验模态分解存在模态混叠和虚假模态的问题,提出了一种改进HHT算法的电力系统间谐波检测算法。首先采用多分辨率分析对待检测的信号进行处理,再利用基于总体平均经验模态分解（EEMD）对处理后的信号进行分解,最后通过Hilbert变换求出信号的频率和幅值。对算法进行了仿真,并与经典的HHT算法仿真结果以及其他文献中的仿真结果进行了比较。结果表明：改进的算法检测间谐波是有效的,而且具有较高的检测精度。In allusion to the problem that the classical Hilbert-Huang transform（HHT）algorithm is sensitive to noise and there are modal aliasing and false modal in the empirical mode decomposition.This paper discusses an improved HHT algorithm for power system inter-harmonic detection algorithm.Firstly,the signal to be detected is processed using multi-resolution analysis.Then,the processed signal is decomposed based on the general average empirical mode decomposition（EEMD）.Finally,through Hilbert transform finding the signal frequency and amplitude.The algorithm is simulated in this paper,and comparing with the simulation results of the classical HHT algorithm and other algorithm of other literature.The results show：The improved algorithm to detect inter-harmonics is effective,and has high detection accuracy.

关 键 词：间谐波检测 多分辨率分析 总体平均经验模态分解 HHT 复信号双边谱 

分 类 号：TN713[电子电信—电路与系统]