高速铁路综合地线的接地效果  

Grounding Effect of Integrated Grounding Wire for High-Speed Railway

作　　者：高国强[1,2] 董安平[2,3] 张雪原[2] 雷栋[2] 王波[2] 吴广宁[2] 

机构地区：[1]西南交通大学物理科学与技术学院,四川成都610031 [2]西南交通大学电气工程学院,四川成都610031 [3]中国中铁电气化局集团,北京100036

出　　处：《西南交通大学学报》2011年第1期103-108,共6页Journal of Southwest Jiaotong University

基　　金：铁道部科技研究开发计划资助项目(2007J036)

摘　　要：为提高综合贯通地线的利用率,以其接地阻抗及对钢轨电流的分流系数作为接地效果的评价指标,对地线半径、埋设深度、横向连线间隔和土壤电阻率与系统接地效果的关系进行了研究.结果表明,地线半径、横向连线间隔和土壤电阻率对接地阻抗和分流系数影响较大,埋设深度的影响较小.与遂渝线无砟轨道的实验结果相比,接地阻抗相差17.3%,分流系数相差11.4%.In order to improve the utilization of integrated grounding wire（IGW）,the inflences of its radius,buried depth,interval of transversal connections and soil resistivity on grounding effect were analyzed by taking IGW grounding impedance and shunting coefficient for rail current as the assessment indices of the grounding effect.The research result shows that the grounding impedance and the shunting coefficient are sensitive to the changes of IGW radius,interval of transversal connections and soil resistivity,but insensitive to buried depth.A comparison between the theoretical results and the test ones on Suining-Chongqing ballastless railway indicates that differences in the grounding impedance and the shunting coefficient are respectively 17.3% and 11.4%.

关 键 词：综合地线 阻抗 分流系数 钢轨电位 

分 类 号：U221[交通运输工程—道路与铁道工程] TM922.3[电气工程—电力电子与电力传动]