HHT算法在电力系统谐波分析中的应用研究  

Application Study of HHT Approach to Harmonic Analysis in Power System

作　　者：程琼[1] 陈明德[1] 

机构地区：[1]湖北工业大学电气与电子工程学院

出　　处：《湖北工业大学学报》2013年第5期49-52,68,共5页Journal of Hubei University of Technology

基　　金：国家自然基金项目(61072130);湖北省科技厅自然基金项目(2010CDB02501)

摘　　要：针对电力系统谐波检测的问题,采用希尔伯特一黄算法对电力系统谐波信号进行分析.在阐述了希尔伯特一黄算法原理的基础上,分别使用平稳和突变的谐波信号对希尔伯特一黄算法进行了验证.并利用Matlab/Simulink平台构建电力系统谐波源模型,研究希尔伯特一黄算法在实际电力系统中的应用.研究、仿真结果表明,希尔伯特一黄算法在分析电力谐波时,能准确分析出各次谐波的瞬时频率和瞬时幅值以及波动时刻.To solve the problem of power system harmonic detection, this paper adopted the Hilbert-Huang Transform to analyze the power system harmonic signal. Firstly, it introduced the basic principle of Hilbert-Huang Transform. Secondly, it used a stationary and mutation of harmonic signal to verify the Hilhert-Huang Transform. Finally, it adopted the Matlab/Simulink platform building a model of harmonic source in power system to research the Hilbert-Huang Transform in the application of the actual power system. The research and simulation results show that the Hilbert-Huang Transform is able to analyze every harmonic instantaneous frequency and instantaneous amplitude and wave moment accurately in the electric power harmonic analysis.

关 键 词：谐波分析 希尔伯特—黄变换 经验模态分解 

分 类 号：TN911.72[电子电信—通信与信息系统]