铁道科学与工程学报2017，Vol.14Issue(4)：682-689,8.
地磁暴侵害高铁自耦变压器的混沌研究
Chaos studies of geomagnetic storms affecting autotransformer of high-speed railway
摘要
Abstract
Geomagnetically induced currents (GIC), which may cause autotransformer DC magnetic bias, will be produced in high-speed railway traction power supply system under the influence of geomagnetic storms and affects the safe operation of power supply system. In order to study the effects of geomagnetic storms on nonlinear dynamic characteristics of autotransformer in high-speed railway, the mechanism of GIC intruding into the high-speed railway power supply system was analyzed and the magnetization characteristic expression of the transformer under the action of magnetic bias was presented. This paper established the circuit model with autotransformer, which was analyzed to study the effects of GIC on autotransformer. The further study shows that the chaotic oscillation of autotransformer voltage is related to the magnetization characteristic of the iron core. The greater the nonlinear magnetization characteristic indexn, the more likely GIC is to cause the voltage chaotic oscillation in the autotransformer.关键词
GIC/自耦变压器/混沌振荡/磁化特性Key words
GIC/autotransformer/chaotic oscillation/magnetization characteristic分类
信息技术与安全科学引用本文复制引用
王旭,刘明光,王昕,宋超伟,田浩..地磁暴侵害高铁自耦变压器的混沌研究[J].铁道科学与工程学报,2017,14(4):682-689,8.基金项目
国家自然科学基金资助项目(41374189) （41374189）
北京交通大学基本科研资助项目(2015JBM085) （2015JBM085）
