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《AUTOMATION OF ELECTRIC POWER SYSTEMS》 1995-07
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A NEW CRITERION FOR POWER SYSTEM AUTOMATIC SEPARATION

Pan Zhencun,Sang Zaizhong,Dai Fangtao,Li Jiwen, Zhang Erhua(Shandong University of Technology.Ji’nan)  
The characteristics of electrical quantities during power swing is analysed.Someproblems existing in presently used power system separation method is revealed.A new criterion. which detects power swing by measuring the amplitude and frequency of the deviation of 30---phasecurrent,is presented.A new power system separation device is developed.Simulation test andoperation experience shows that the presented method is correct and more effective than the oldones.
【CateGory Index】: TM727
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