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The Application of Wavelet Transform in Power Quality Disturbance Detection and Location

ZHANG Xiao-bing,CUI Jia-rui,LIANG Yuan-hua (College of Measure-control Technology & Communication Engineering, Harbin Univ.Sci.Tech.,Harbin 150040,China)  
To discusse the principle of the wavelet multi-resolution signals decomposition,a novel method was proposed of power quality transient disturbance detection and analysis using wavelet multi-resolution signal decomposition.Through the simulation of several power quality transient disturbances detection,such as voltage sag,voltage interruption and impulsive transients,the results show that this method has good detection performance.
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