接触网和接触轨两种供电方式下地铁线路耐雷击水平分析与比较  

Comparative Research of Lightning Withstand Levels between Metro Catenary Mode and Contact Rail Power Supply Mode

作　　者：李瑞芳[1] 韩虎 金亮[1] 陈奎[1] 曹晓斌[1] 李鲲鹏[1,3] LI Ruifang;HAN Hu;JIN Liang;CHEN Kui;CAO Xiaobin;LI Kunpeng(School of Electrical Engineering,Southwest Jiaotong University,610031,Chengdu, China)

机构地区：[1]西南交通大学电气工程学院,成都讲师610031 [2]四川电力设计咨询有限公司,成都610031 [3]广州地铁设计研究院有限公司,广州510010

出　　处：《城市轨道交通研究》2017年第7期48-51,共4页Urban Mass Transit

摘　　要：架空接触网供电和接触轨供电是地铁线路常见的两种供电方式。运用CDEGS软件建立了接触网线路和接触轨线路模型,仿真分析两种方式下雷击位置及高架桥高度对耐雷击水平的影响,以及接触轨供电方式下避雷带架设高度对耐雷击水平的影响;比较了两种供电方式下的耐雷击水平差异并解释了原因。结果表明,两种供电方式下,雷击点距接地点越远,耐雷击水平越低;高架桥越高,耐雷水平越低。接触轨供电方式下,避雷带越高,耐雷击水平越高。接触轨供电方式下的耐雷击水平较接触网供电方式高得多。Overhead catenary and contact rail are two kinds ofcommon power supply modes in metro system.The lightningwithstand levels of the two power supply modes are researchedby using CDEGS software to establish a simulation model.The effect of lightning strike positions and height of elevatedbridge on lightning withstand level is analyzed.The differencesof lightning withstand levels between catenary mode andcontact rail power supply mode are compared,the courses areexplained.When the point of strike is higher from the ground,the lightning withstand level is lower,otherwise on the contrary.The research shows that the lightning withstand level ofcontact rail mode is higher than that of the overhead catenary.

关 键 词：地铁 架空接触网 接触轨 耐雷击水平 

分 类 号：U231.8[交通运输工程—道路与铁道工程]