基于ASW-TAM的电能质量扰动分析  

Power Quality Disturbance Analysis Based on ASW-TAM

作　　者：华贵山[1] 葛浩[1] 

机构地区：[1]滁州学院机械与电子工程学院,安徽滁州239000

出　　处：《重庆理工大学学报（自然科学）》2012年第12期106-112,共7页Journal of Chongqing University of Technology：Natural Science

基　　金：安徽省高等学校自然科学研究项目(KJ2012A212);安徽省质量工程项目"自动化特色专业";滁州学院自然科学研究项目基金(2010kj013B)

摘　　要：针对TAM算法无法分析非平稳电能质量扰动的问题,提出了一种基于自适应滑窗-Toeplitz近似法的时频分析方法。该方法首先根据非平稳电能质量扰动信号特征,采用自适应滑窗对信号数据进行分块,然后利用TAM算法对每块中的数据进行处理,检测出频率和幅值信息,接着联合所有窗口的分析结果,得到整个信号的时频率分布信息。对电能质量干扰的非平稳信号进行了仿真实验。实验结果表明,所提出的方法适合动态电能质量扰动检测。According to TAM algorithm which can＇t analyze non-stationary power quality disturbances,it presents a time-frequency analysis based on adaptive sliding window-TAM algorithm in this paper.According to the characteristics of non-stationary power quality signal,the signal is first divided into small blocks by the adaptive sliding window.In order to get the frequencies and amplitudes of each block,a TAM algorithm is then applied.Next,it receives the whole information of time-frequency distribution with the parameters of each block.At last,simulations have been performed to several non-stationary signals;the results have strongly indicated that the proposed method is very suitable for the detection of power quality disturbance with practically applied prospect.

关 键 词：自适应滑窗 TAM 电能质量扰动 时频分析 非平稳信号 

分 类 号：TM743[电气工程—电力系统及自动化]