煤矿主变压器励磁涌流识别技术研究
周文杰
（晋能控股煤业集团永定庄煤业公司，山西大同037000）
摘要： 为进一步提升煤矿供电系统的安全性和稳定性，保证煤矿高效、安全生产，在对主变压器纵差保护系统和传
统励磁涌流识别技术研究的基础上，重点对系统阻抗、合闸角等参数对励磁涌流的影响进行分析，最后提出了采用归一
化处理的改进识别技术实现对变压器励磁涌流的准确识别。
关键词： 变压器；励磁涌流；系统阻抗；系统合闸角；剩磁
中图分类号： TD611 文献标志码： A 文章编号： 2095-0802-(2022)09-0115-02
Identification Technology of Excitation Inrush Current of Main Transformers in Coal Mines
ZHOU Wenjie
(Yongdingzhuang Coal Industry Co., Ltd., Jinneng Holding Coal Industry Group, Datong 037000, Shanxi, China)
Abstract: In order to further improve the safety and stability of the coal mine power supply system and ensure the efficient and
safe production of coal mines, based on the research on the longitudinal differential protection system of main transformers and the
traditional inrush current identification technology, this paper focused on the analysis of the influence of system impedance,
closing angle and other parameters on the excitation inrush current, and finally put forward the improved identification technology
of normalized processing to realize the accurate identification of transformer excitation inrush current.

Key words: transformer; excitation inrush current; system impedance; system closing angle; remanence