New method to identify inrush current based on sampled values

被引：0
|
作者：
Hu, Yufeng [1 ]
Chen, Deshu [1 ]
机构：
[1] Huazhong Univ of Science and, Technology, Wuhan, China
来源：
Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering | 2000年 / 20卷 / 09期
关键词：
Defects - Electric excitation - Magnetization - Relay protection - Sampling;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Aimed at the disadvantages of second harmonic restraint and dead angle restraint, a new method is presented in this paper to distinguish inrush current from others. The new theory is based on sampled values and can disable the relay by phases. The dynamic tests show that the new theory can preferably solve some problems of traditional restraint methods, which operates slowly when the fault transformer is switched in without loads, are affected by harmonic easily and can not identify the symmetrical inrush current. At the same time, the new method owns good reliability.
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页码：55 / 58
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