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.
出处
《中国电力》
CSCD
北大核心
2010年第5期26-29,共4页
Electric Power
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
AC electrified railway
traction station
backward current
equivalent earth circuit
nearest tower of overhead line for power supply
earth line
electro erosion
