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《Power System Technology》 2009-12
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WAMS Based Power System Disturbance Identification and Location Approach

QIN Xiao-hui1,BI Tian-shu2,YANG Qi-xun2(1.China Electric Power Research Institute,Haidian District,Beijing 100192,China;2.Key Laboratory of Power System Protection and Dynamic Security Monitoring and Control(North China Electric Power University),Ministry of Education,Changping District,Beijing 102206,China)  
It is extremely important to identify disturbance type and locate where it happens for timely and effective implementation of power system emergency control.However,as for current stability control system,its perception range of disturbance depends on the configuration of measuring points,thus the accuracy and redundancy of disturbance identification are not satisfied.On the basis of analyzing the mechanism of familiar disturbances in detail,a wide area measurement system(WAMS) based approach to identify and locate power system disturbances is proposed.On the one hand,the proposed method selects the PMU-measured disturbed positive sequence phasors of branch currents as characteristic variables,on the other hand,by use of superposition principle the estimated disturbing components in branch currents are solved in component network;by means of fast matching between measured characteristic variables and estimated disturbing components of presupposed event by distance 2-norms,the fast and effective identification of the type of disturbance and the position where it happens are implemented to improve the identification and matching of fault scenario of stability control system.Simulation results show that the proposed approach can identify and locate most of disturbances effectively and quickly.
【Fund】: 国家自然科学基金项目(50607005);; 新世纪优秀人才支持计划(NCET-05-0216);; 长江学者和创新团队发展计划(IRT0515);; 高等学校学科创新引智计划资助(B08013)~~
【CateGory Index】: TM712
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