Identifying Transformer Inrush Current Based on Normalized Grille Curve

被引：29
|
作者：
Ma, Jing [1 ,2 ]
Wang, Zengping [1 ]
Yang, Qixun [1 ]
Liu, Yilu [3 ]
机构：
[1] N China Elect Power Univ, Sch Elect & Elect Engn, Beijing 102206, Peoples R China
[2] Virginia Polytech Inst & State Univ, Bradley Dept Elect & Comp Engn, Blacksburg, VA 24061 USA
[3] Univ Tennessee, Dept Elect Engn & Comp Sci, Knoxville, TN 37996 USA
来源：
IEEE TRANSACTIONS ON POWER DELIVERY | 2011年 / 26卷 / 02期
基金：
美国国家科学基金会;
关键词：
Inrush currents; internal faults; normalized grille curve; power transformer; ARTIFICIAL NEURAL-NETWORK; POWER TRANSFORMERS; MAGNETIZING INRUSH; DIFFERENTIAL RELAY; INTERNAL FAULTS; FUZZY-LOGIC; PROTECTION;
D O I：
10.1109/TPWRD.2010.2101087
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：
A novel algorithm for discrimination between inrush currents and internal fault currents by utilizing the normalized grille curve is proposed. First, the calculation method of the normalized grille curve is presented. Then, two schemes to discriminate the inrush currents from the internal faults in the time and frequency domains are, respectively, developed. tested on an YNd11-connected transformer. The results indicate that the proposed technique is able to reliably and accurately distinguish inrush currents from internal faults with easy implementation. Furthermore, the new method is not affected by the saturation of current transformers.
引用
收藏
页码：588 / 595
页数：8
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