摘要
首先介绍了地铁供电系统的构成,简要分析了DC1500V三轨牵引供电的基本原理。利用MATLAB/Simulink工具建立某条实际运行的DC1500V三轨供电方式的地铁线路数学模型,对不同点的短路电流和列车启动电流仿真分析后,举例说明了如何通过对电流上升率、电流增量和电流上升持续时间的测量来区分故障情况和正常运行的情况。为地铁馈线保护的配置提供了实用的理论基础。
This thesis firstly introduces the construction of metro power supply system and analyzes briefly the basic principle of DC1500V triple rail traction power supply.By establishing the mathematical model of DC 1500V triple rail power supply circuit based on MATLAB/Simulink and conducting the simulation and analysis of different short circuit currents and train starting current,this paper illustrates how to distinguish between the fault and normal conditions on the basis of current increase rate,increment and rise duration,which may lay some theoretical basis for the metro feeder protection configuration.
出处
《华东交通大学学报》
2013年第3期12-16,共5页
Journal of East China Jiaotong University
关键词
地铁供电系统
启动电流
短路电流
馈线保护
metro power supply system
starting current
short circuit current
feeder protection
