电气化铁路分区所接地电阻研究  

Study on Earthing Resistance of Sectioning Post of Electrified Railway

作　　者：侯东光 HOU Dongguang

机构地区：[1]中国铁路设计集团有限公司

出　　处：《电气化铁道》2021年第4期46-49,共4页Electric Railway

基　　金：中国国家铁路集团有限公司科技研究开发计划课题(N2019G023)。

摘　　要：通过电路仿真软件建立牵引供电系统短路故障模型,分析了直供及AT供电方式下分区所短路故障时接地电阻对主地网电位抬升、地网入地电流及综合贯通地线内电流的影响,同时研究了不同接地电阻及供电方式下铁路沿线钢轨电位的分布,并根据仿真结果对实际工程设计中分区所接地电阻的选择提出了相应的建议。The short-circuit fault model of traction power supply system is established by circuit simulation software.The influence of the earthing resistance on the potential rise of main earthing network,the earthing current of the earthing network and the current in comprehensive through earthing wire under the short-circuit fault of sectioning post under direct power supply and at power supply mode are analyzed.At the same time,researches are made for the distribution of rail potential along the railway under different earthing resistance and power supply modes,and the proposals for selection of the earthing resistance for the sectioning post during its actual engineering design.

关 键 词：牵引供电系统 短路故障 接地电阻 电路仿真 地网电位 

分 类 号：U224.25[交通运输工程—道路与铁道工程]