牵引变电站供电线路进线档频繁电烧伤分析  

Analysis of electro erosion near first tower of overhead line for power supply of traction station

作　　者：杨晓辉[1,2] 卢明[1] 阎东[1] 吕中宾[1] 

机构地区：[1]河南电力试验研究院,河南郑州450052 [2]上海交通大学电气工程系,上海200030

出　　处：《中国电力》2010年第5期26-29,共4页Electric Power

摘　　要：从分析多个电铁牵引站供电线路进线档出现架空地线连接金具电腐蚀入手,着重分析了铁路负荷回流在牵引站地网及其进线各接地点处的分布;通过多次现场实测,并对等效回路模型及其各处电流分布的分析,得出了电铁牵引站供电线路进线档地线上存在较大电流的结论。讨论了牵引站供电线路进线档电烧伤事故频繁发生给电网安全运行带来的影响,并对现有技术条件和运行维护制度提出了相应的改进措施和建议。The metal connectors＇ electro erosion on the transmission line of AC electrified railway was analyzed at first. The distribution of backward current from the railway load to the earth-connecting network of traction station and the earth line of transmission line for power supply was studied. Through the analysis of the equivalent circuit for earth-connecting and on-site test of earth current, it can be concluded that the large earth current was existed. Based on this conclusion, the cause of the frequent electro erosion at the nearest tower of traction station for power supply was found, and the countermeasure was also proposed.

关 键 词：交流电气化铁道 牵引站 回流 等效地回路 进线档 地线 电烧伤 

分 类 号：U226.7[交通运输工程—道路与铁道工程]