电力系统及其自动化学报2018，Vol.30Issue(3)：25-34,10.DOI:10.3969/j.issn.1003-8930.2018.03.004
电力机车变压器励磁涌流及其影响分析
Analysis on Inrush Current of Electric Locomotive Transformer and Its Effects
摘要
Abstract
To study the mechanism of inrush current from an electric locomotive transformer used in electrified railway and its effects,an equivalent circuit of traction power supply system is established when the locomotive transformer is closing.The mathematical models of the flux of the transformer and the primary and secondary side voltages are formu-lated.A simulation model is built to analyze the changes of inrush current generated by the locomotive transformer un-der different conditions,as well as its effect on the primary and secondary side voltages of the transformer.Simulation results show that the locomotive transformer can experience an inrush current which is larger than the rated current am-plitude when the transformer is closing in the traction network,and an over-high inrush current can cause voltage loss and a serious distortion on the primary and secondary side voltages of the transformer;the system parameters,such as traction network voltage,locomotive position,transformer capacity and transformer remanence,can influence the in-rush current and its effects on the voltage distortion.The research in this paper provides reference for the abnormal trip-ping phenomenon in the traction power supply system.关键词
机车变压器/励磁涌流/牵引网电压/高次谐波Key words
locomotive transformer/inrush current/traction network voltage/high-order harmonic分类
交通工程引用本文复制引用
赵元哲,李群湛,周福林,彭飞..电力机车变压器励磁涌流及其影响分析[J].电力系统及其自动化学报,2018,30(3):25-34,10.基金项目
中国铁路总公司重点科技资助项目(2015J005-A) （2015J005-A）
国家自然科学基金资助项目(U1134205) （U1134205）
