基于HHT的配电网电压波动跟踪研究  

Study on Voltage Fluctuation Tracking of Distribution System Based on HHT

作　　者：陈刚[1] 江政昕[1] 邱东晓[1] 卜能源 倪堃[1] 

机构地区：[1]浙江嘉兴电力局,浙江嘉兴314000

出　　处：《电气技术》2013年第9期6-8,17,共4页Electrical Engineering

摘　　要：针对配电网电压时常波动的问题,提出希尔伯特黄变换(HHT)在配电网电压波动跟踪中的应用。为了解决经验模态分解(EMD)过程中的端点效应问题,采用基于波形匹配的自适应EMD端点延拓方法对信号的边缘进行了处理。HHT将电压波动情况通过固有模态函数(IMF)的电压幅值和波动时刻频率两个参数反映出来,通过Matlab编程仿真,验证了该方法在配电网电压波动跟踪中的实用性。For the voltage of distribution system often fluctuates,HHT is proposed in voltage fluctuation tracking.In order to solve the problem of end effect in the process of empirical mode decomposition（EMD）,a self-adaptive method named improved waveform matching is applied in dealing with the end issue.Voltage fluctuations is reflected by two parameters named voltage amplitude and frequency of each intrinsic mode function（IMF） in HHT.The practicality of the method is verified by Matlab simulation.

关 键 词：HHT 配电网 电压波动 跟踪 仿真 

分 类 号：TM714.2[电气工程—电力系统及自动化]