A new method for transformer protection based on the ratio of voltage and fluxional differential current

被引：0
作者：
Xu, Y
Wang, ZP
Liu, Q
Yang, QX
机构：
来源：
IPEC 2003: Proceedings of the 6th International Power Engineering Conference, Vols 1 and 2 | 2003年
关键词：
power transformer; differential protection; magnetizing inrush; internal fault;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In order to resolve the mal-operation in transformer differential protection causing by magnetizing inrush, the limitations of magnetic flux characteristics principle is introduced first, then this paper is to put forward a new method for distinguishing magnetizing inrush based on the ratio of voltage and fluxional differential current. The principle is simple and its implementation is easy. None of anticipated internal parameters is needed. The advantages of the method are convenient data acquisition, quick calculation and operation. The results of simulation testing confirmed that the method is able to clear the internal fault reliably and quickly. Therefore, this method has great practical value.
引用
收藏
页码：613 / 618
页数：6
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