S变换在电能质量扰动中的分析

TM711; S变换是电能质量扰动分析中的一个重要工具.为了对电能质量扰动信号进行准确分析,提出S变换模矩阵幅值求全算法和幅值平方和均值算法.求全算法得到时间和频率的幅值包络,准确得到扰动量的幅值.平方和均值算法可以准确定位扰动的时间和检测谐波频率分量.通过在Matlab上S变换对电能质量扰动信号的仿真分析并与Daubechies小波及小波包变换分析进行比较,证明S变换对电能质量扰动分析的精确性更高....

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Bibliographic Details
Published in电测与仪表 Vol. 52; no. 22; pp. 25 - 30
Main Author 何智龙 苏娟 覃芳
Format Journal Article
LanguageChinese
Published 湖南大学电气与信息工程学院,长沙,410082 2015
Subjects
S变换
幅值平方和均值算法
求全算法
精确性
求全算法
精确性
S变换
average of amplitude quadratic sun algorithm
幅值平方和均值算法
accuracy
summation algorithm
S-transform
Online AccessGet full text
ISSN1001-1390

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Summary:TM711; S变换是电能质量扰动分析中的一个重要工具.为了对电能质量扰动信号进行准确分析,提出S变换模矩阵幅值求全算法和幅值平方和均值算法.求全算法得到时间和频率的幅值包络,准确得到扰动量的幅值.平方和均值算法可以准确定位扰动的时间和检测谐波频率分量.通过在Matlab上S变换对电能质量扰动信号的仿真分析并与Daubechies小波及小波包变换分析进行比较,证明S变换对电能质量扰动分析的精确性更高.
Bibliography:He Zhilong, Su Juan, Qin Fang （College of Electrical and Information Engineering, Hunan University, Changsha 410082, China）
23-1202/TH
S-transform, summation algorithm, average of amplitude quadratic sun algorithm, accuracy
S-transform is an important tool in the analysis of power quality disturbances. In order to detect the signal of power quality disturbances accurately, a method based on amplitude summation and the average of amplitude quad- ratic sun of S-transform module matrix is proposed. The summation algorithm obtains the envelope of amplitude of time and frequency and obtains the amplitude of disturbance accurately. The average of amplitude quadratic sun algorithm can locate the time of disturbances and detect the frequencies accurately. Compared the power quality disturbances analysis of S with Daubechies wavelet and wavelet packet transform by Matlab stimulation, the result proves that S- transform is more accurate for the analvsis of power quality disturbance.
ISSN:1001-1390