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《Electrical Equipment》 2006-11
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Summarization of One Point Earth-Fault Protection for Generator Rotor

LI Bin1, TU Li-ming 1,2 , SU Yi2, HUANG Shao-f eng 1,2 (1 North China Electric Power University Sifang Institute,Beijing 102206,Chin a; 2 Beijing Sifang Automation Co.Ltd,Beijing 100085,China)  
This paper introduced the advantages of switch sampling theory and inject ing square wave voltage theory by analyzed some kinds of protections f or one point earth-f ault of generator exciting rotor.The switch sampling p rotection stands f or the prospect of non-injection protection and the in jecting square wave voltage protection represents the prospect of injection prot ection.From theoretical discussion,the injecting square wave voltage is one of t he best grounding f ault protection.
【CateGory Index】: TM862
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