地铁牵引网短路电流特征分析与仿真

Analysis and Simulation of Short-circuit Current in Subway Traction Power Supply

近年来,地铁牵引网短路电流中的震荡与超调现象对已有的牵引供电系统故障模型提出了挑战。通过分析地铁牵引网故障波形、短路试验波形和地铁列车试验记录,建立了包含地铁车辆的地铁牵引供电系统的仿真模型,获得了与短路试验和运行记录一致的仿真结果,揭示了震荡与超调的产生原因。

In recent years, the swing and overshoot in short- circuit fault current profiles of subway traction power supply system could not be explained by the existing models. Then a simulating model is established by analyzing the records of short-circuit fault current, the commissioning test waveform and the electrical parameters of subway vehicles. By using this model, the simulation results are consistent with the fault records and the commissioning test current profiles. Also, the causes of the swing and overshoot on the waveform are clearly explained.