Discrimination of inrush current based on dynamic magnetizing inductance solved by sinusoid approximation of instantaneous signal

被引：0
|
作者：
Li Guang [1 ]
Qian Qingquan [1 ]
Luo Jian [2 ]
Yu Guanglei [2 ]
Lu Liting [2 ]
机构：
[1] Southwest Jiao Tong Univ, Coll Elect Engn, Chengdu, Peoples R China
[2] Chongqing Univ, Key Lab High Voltage Engn & Elect New Technol, Chongqing, Peoples R China
来源：
2006 INTERNATIONAL CONFERENCE ON POWER SYSTEMS TECHNOLOGY: POWERCON, VOLS 1- 6 | 2006年
关键词：
power transformer protection; inrush current; dynamic magnetizing inductance;
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：
For a long time, the discrimination of the inrush current for power transformer is a perplexing problem. In this paper, a new method used to distinguish the inrush current from the inner fault is proposed. Based on Sinusoid Approximation of Instantaneous Signal (SAIS), the dynamic magnetizing inductance in the power transformer can be calculated, whose validity is illuminated with two emulating models. With the character of calculated dynamic magnetizing inductance, distinguishing the inrush current from the short circuit between turns can be processed.
引用
收藏
页码：1393 / +
页数：2
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