三种牵引供电方式的电气特性比较

Electrical Characteristics Comparison of Three Traction Power Supply Modes

在Matlab/Simulink仿真环境下,根据AT供电系统的结构特点建立其仿真模型,将AT供电系统解列,可建立带加强线的全并联直接供电系统和带回流线的直接供电系统仿真模型。基于建立的仿真模型,比较了三种牵引供电方式下的短路阻抗、电压损失、电流分配等电气指标,分析比较可知三种供电方式各有优劣,要根据具体的线路选择牵引供电方式。

Simulation models are built according to the structural feature of AT power supply system in MAT- LAB/SIMULINK. Breaking the AT power supply system can build direct power supply system with reinforcing and direct power supply system with return line simulation model. Based on the simulation models, this paper compares short circuit impedance, voltage level and current distribution of the three traction power supply and analyses the pros and cons.