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《Electric Power Automation Equipment》 2007-02
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Research on wide-area protection terminal device based on GPS

YANG Shi-rong1,WANG Shao-rong2,CHENG Shi-jie2(1.Wuhan 701 Institute,Wuhan 430064,China;2.Huazhong University of Science & Technology,Wuhan 430074,China)  
To improve the performance of the relay protection and build actual wide-area protection system from the viewpoint of whole or district power network,a wide-area protection terminal device based on GPS(Global Positioning System) is introduced.It adopts modularized structure,each terminal equips with GPS signal module and telecommunication module,and shares the wide-area information of power network via special communication network.The protection system composed of terminal devices uses wide-area information to establish the protective strategy to realize the coordination and cooperation of protections at different places in power network and the fast and least area fault isolation.The action of backup protection is speeded up,its performance improved and the adaptive protection realized.The reliability of GPS signal and communication,to which the attention should be paid in application,are discussed.
【CateGory Index】: TM772
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