铁路10kV电缆贯通线小电阻接地系统自动重合闸的应用分析  

Analysis of auto-reclosing application in low resistance grounding system for 10 kV entire cable power line along railway

作　　者：徐根厚[1] 李群湛[1] 秦浩庭[1] 

机构地区：[1]西南交通大学电气工程学院,四川成都610031

出　　处：《电力科学与技术学报》2010年第3期77-81,共5页Journal of Electric Power Science And Technology

摘　　要：铁路贯通线采用全电缆模式已经在合宁、青藏铁路得到应用,为了提高铁路供电可靠性,高速铁路贯通线采用全电缆已成为趋势.电缆贯通线适合采用低电阻接地系统。利用EMTDC对小电阻接地系统全电缆贯通线故障自动重合闸进行大量仿真分析,结果表明:重合闸操作过电压不超过电缆冲击耐压水平,重合闸冲击电流也不高于电缆热稳定电流,重合闸是提高供电可靠性必要的可行方案.The entire cable power line along railway has been used in the Hening and Qingzang railway, and it becomes a trend for the high-speed railway. The low resistance grounding system is adapted to apply in the entire cable power line along railway. Automatic reclosing for the system is simulated with EMTDC in this paper. Results show that the automatic reclosing caused over-voltage is no higher than the cable impulse withstand voltage, and the automatic reclosing caused over--current is no larger than the cable thermal stability current, and automatic reclosing is necessary and feasible for improve the railway power supply reliability.

关 键 词：EMTDC 贯通线 小电阻接地 重合闸 

分 类 号：TM762.2[电气工程—电力系统及自动化]