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《East China Electric Power》 2012-05
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Power Quality Detection Simulation for Short Duration Voltage Variation

ZHOU Jian-ping,YANG Ning,CHEN Yan(School of Power and Automation Engineering,Shanghai University of Electric Power,Shanghai 200090,China)  
The short-circuit fault cases were simulated according to the actual power system transmission line.Various faults occurred by changing the parameters of three-phase fault module,thereby three different types of fault signals in the short duration voltage variation were obtained,and then were detected by means of the wavelet and the lifting wavelet,respectively.The simulation results show that both the wavelet and the lifting wavelet can accurately detect the singularity of fault signals.However,the reconstruction errors of the lifting wavelet are much fewer than those of the wavelet,showing higher accuracy in calculation.Therefore,the lifting wavelet is more suitable for the accurate and real-time operating requirements in the power system.
【Fund】: 国家自然科学基金项目(60801056);; 上海市教育委员会重点学科建设资助项目(J51303)~~
【CateGory Index】: TM743
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