电气化铁道贯通地线引起的地电位升分析  

作　　者：常媛媛[1] 张晨[1] 

机构地区：[1]中国铁道科学研究院通信信号研究所,北京博士研究生100081

出　　处：《铁道通信信号》2010年第12期14-17,共4页Railway Signalling & Communication

摘　　要：分析电气化铁道贯通地线引起的地电位升,建立贯通地线入地电流在周围引起地电位升的模型,推导贯通地线电流引起的地电位升的公式。根据不同的土壤电阻率和贯通地线上电流的大小,计算与贯通地线不同距离时的地电位升,对地下金属管线的布置及接地点的选取具有一定的参考作用。By analyzing ground potential rise caused by the connecting ground wire of electrified railway,we established a model of ground potential rise induced the in-earth current in connecting ground wire and derive the formula of ground potential rise caused by the current in connecting ground wire.According to different ground resistivity and different injection current,ground potential rise could be calculated by the distance from ground wire in the formula,which offers a valuable guide about the layout of underground metal pipes and the selection of ground points.

关 键 词：电磁影响 地电位升 贯通地线 阻性耦合 电磁防护 

分 类 号：U223[交通运输工程—道路与铁道工程]