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《Engineering Journal of Wuhan University》 2008-06
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Controlling strategy to restrain excitation inrush current of transformer based on its cause

WUYUN Gaowa1,2,LIU Dichen2,YE Nianguo3(1.Shenzhen Vocational Polytechnic College,Shenzhen 518055,China;2.School of Electrical Engineering,Wuhan University,Wuhan 430072,China;3.Shenzhen Intelligent Device Development Co.Ltd.,Shenzhen 518033,China)  
Before entering circuit,the transformer's residual flux of magnetic-circuit is related to cutting phase of latest power-off;and based on the anti-magnetization curve,this relation is explained.The method for restraining excitation inrush current is put forward by combined with the magnetism of magnetic material.Finally,the entering phase controlling strategy to restrain the excitation inrush current of no-load transformer entering the power system by controlling entering phase and cutting out phase,is put forward.
【CateGory Index】: TM406
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