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《Proceedings of the Csee》 2001-07
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TRANSFORMER INRUSH DETECTED BY THE VARIATION OF MAGNETIZING IMPEDANCE

ZONG Hong liang 1, JIN Hua feng 1, ZHU Zheng fei 1,ZHANG Shao cun 2 (1.Power System Automation Research Institute, Nanjing 210003,China; 2.Anshan Power Bureau,Anshan 114002,China)  
Based on the principle that the variation of transformer magnetizing impedance produce magnetizing inrush, this paper is to put forward a new method to distinguish magnetizing inrush and internal fault by measuring the change of impedance. This method doesn't need any parameters of the transformer and system.Experiment results verify the dependability,security,and quick speed of operation
【CateGory Index】: TM772
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