Sympathetic Inrush Current in a Transformer and a Method for its Identification

被引：15

作者：

Qi, Xuanwei ^{[1
]}

Yin, Xianggen ^{[1
]}

Zhang, Zhe ^{[1
]}

机构：

[1] Huazhong Univ Sci & Technol, State Key Lab Adv Electromagnet Engn & Technol, Wuhan, Peoples R China

来源：

IEEJ TRANSACTIONS ON ELECTRICAL AND ELECTRONIC ENGINEERING | 2016年 / 11卷 / 04期

基金：

中国国家自然科学基金;

关键词：

magnetizing inrush; sympathetic inrush; transformer differential protection; dynamic simulation test; smart substation;

D O I：

10.1002/tee.22261

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

080906 [电磁信息功能材料与结构]; 082806 [农业信息与电气工程];

摘要：

This paper studies the sympathetic interaction between transformers. The influencing factors of the sympathetic inrush current, including the system impedance, closing angle and the initial remnant flux of the added transformer, the system voltage, and the neutral grounding mode of the transformers, are analyzed in detail through dynamic simulation. Based on this, a method for identifying the sympathetic inrush current is proposed based on the essential curve feature of the magnetizing currents of the transformers during the sympathetic interaction, taking advantage of the information sharing between substations. The results from dynamic simulation and field-recorded data show the validity of the proposed method. (C) 2016 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.

引用

页码：442 / 450

页数：9

共 16 条

[1]

Bi Daqiang, 2007, Automation of Electric Power Systems, V31, P36

[2]

PHENOMENON OF SYMPATHETIC INTERACTION BETWEEN TRANSFORMERS CAUSED BY INRUSH TRANSIENTS [J].