AT供电方式下土壤电阻率对牵引变电所地网电位影响研究  

Research on Influence on Earthing Network Potential of Traction Substation Caused by Soil Resistivity under AT Power Supply Mode

作　　者：黄文 杨雪凇 杨佳[1] 李朝阳[1] 祝幼强 HUANG Wen;YANG Xuesong;YANG Jia;LI Chaoyang;ZHU Youqiang

机构地区：[1]中铁二院工程集团有限责任公司电气化设计研究院

出　　处：《电气化铁道》2022年第3期31-33,42,共4页Electric Railway

摘　　要：为分析牵引回流系统电流分配规律及钢轨电位过高等现象,研究AT供电方式下分流系数与地网电位的影响因素及其关系,通过推导回流系统各支路分流系数,得到影响回流网电流分配的相关因素,进一步说明了土壤电阻率对地网电位的不同影响程度。研究结果表明,土壤电阻率对分流系数及地网电位影响较大。In order to analyze the current distribution regularities of traction return system and the phenomenon of high rail potential,the influencing factors and relationship between shunt coefficient and earthing network potential under AT power supply mode are studied.By deriving the shunt coefficient of each branch of return system,the relevant factors influencing the current distribution of return network are obtained;it further explains the different influencing degree of soil resistivity on earthing network potential.The results of the research show that the soil resistivity has a great influence on the shunt coefficient and earthing network potential.

关 键 词：AT供电方式 分流系数 地网电位 土壤电阻率 

分 类 号：U224.25[交通运输工程—道路与铁道工程]