交直交机车应用对牵引供电系统的新要求

针对交直交型机车起动牵引力大，牵引持续功率和再生制动功率大；再生电能全部回馈至牵引供电系统；当机车电压低于17．5kV或高于31kV时，电压保护装置动作，机车功率降至0等特点，对机车再生电能回馈至牵引网导致接触网电压抬升或牵引电流大导致接触网电压偏低的问题进行分析，并提出解决措施。

New Requirements to Traction Power Supply System for Application of AC-DC-AC Electric Locomotive

With respect of the great starting traction force of AC-DC-AC, great traction continuous power and regenerating power; complete regenerating power feeding back to traction power system; the action of the voltage protection device and the reduction of locomotive power to zero as the voltage of the locomotive lower than 17.5kV or higher than 3 lkV, the paper analyzes the problems of voltage rise due to the feeding back of regenerating power to overhead contact line or the lower voltage of overhead contact line voltage due to the great traction current, and puts forward the resolution measures.