CAJ | 학술논문

　　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。
　　수선개소료지철공전계통적구성，간요분석료DC1500V삼궤견인공전적기본원리。이용MATLAB/Simulink공구건립모조실제운행적DC1500V삼궤공전방식적지철선로수학모형，대불동점적단로전류화열차계동전류방진분석후，거례설명료여하통과대전류상승솔、전류증량화전류상승지속시간적측량래구분고장정황화정상운행적정황。위지철궤선보호적배치제공료실용적이론기출。
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.