牵引供电所亭直流系统接地故障选判方案研究  

Study on Schemes for Judgement Selection of DC System Earthing Faults in Traction Substations and Posts

作　　者：范远涛 FAN Yuantao

机构地区：[1]中铁电气化局集团有限公司

出　　处：《电气化铁道》2023年第2期26-28,共3页Electric Railway

摘　　要：在电气化铁路实际运行中经常出现牵引供电所亭直流系统绝缘降低、甚至为零的情况,现有排除故障的手段主要通过手动断开各支路开关确定故障范围,该方式限制条件较多,且故障判别准确率不高。本文通过建立直流系统模型,针对绝缘故障进行分析,提出一套直流系统接地故障选判方案,经模拟试验证明该方案应用效果良好,对直流系统故障支路的判断具有很好的适用性。In the actual operation of electrified railways,it often occurs that the insulation of the DC system in the traction substations and posts is reduced or even to be zero.The existing troubleshooting methods mainly determine the fault range by manually disconnecting each branch switch,which has many limitations and low accuracy in fault identification.Through establishing a DC system model and analyzing insulation faults,the paper proposes a set of schemes for judgement selection of earthing fault of DC system.The simulation tests have proved that the scheme has good application effect and has good applicability for judgement of DC system fault branches.

关 键 词：牵引供电直流系统 绝缘降低 故障选判 

分 类 号：U224.3[交通运输工程—道路与铁道工程]