基于HHT的电力系统暂态复合扰动信号的提取分析与研究

英文篇名：Analysis and research of the transient composite disturbance signal of power system based on HHT
中文刊名：电力系统保护与控制
英文刊名：Power System Protection and Control
作者：杨存祥 ; 仝战营 ; 万钰昊 ; 庞小波
英文作者：YANG Cun-xiang ; TONG Zhan-ying ; WAN Yu-hao ; PANG Xiao-bo(Institute of Electrical and Information Engineering ; Key Lab of Information-based Electrical Appliances of Henan Province ; Zhengzhou University of Light Industry ; Zhengzhou 450002 ; China)
中文关键词：HHT ; 暂态复合扰动信号 ; 非平稳性 ; EMD ; Hilbert变换
英文关键词：HHT(Hilbert Huang Transform) ; transient composite disturbance signal ; non-stationary nature ; EMD(empirical mode decomposition) ; Hilbert transform
出版日期：2009-06-01
机构：郑州轻工业学院电气信息工程学院河南省信息化电器重点实验室;
年：2009
期：11
出版单位：电力系统保护与控制

摘要

针对电力系统非线性和非平稳性暂态复合扰动信号的提取要求,采用经验模态分解(EMD)从信号的时间尺度特征出发对信号进行分解,实现了信号自适应的频带划分,在此基础上进行Hilbert变换,分离出了各扰动信号的时间、频率和幅值特征,仿真结果表明该方法对电力系统非平稳的扰动信号具有较好的分析效果。
For the extraction requirements of non-linear and non-stationary nature of the transient composite disturbance signal of the power system,EMD method is applied to decompose these signals from the time scale of its characteristics to realize adaptive signal of the band.And then the characteristics of time,frequency and amplitude of each disturbance signal are extracted on the basis of a Hilbert transformation.Simulation results show that the method has a better analysis result to non-stationary power system disturbance signals.

引文

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