Analysis of the EMU Switching Overvoltage During Pantograph Raising Base on Multiple Re-strikes Arc Model

As the core system of the railway vehicle power supply, the current collection system transmits electric energy to the vehicle through the catenary to ensure the normal operation of the vehicle. The normal operation of the current collection system is very important. Arcing occurs during the action of the pantograph system, and the arcing directly affects the quality of the power system, and at the same time, it will have a certain impact on the electromagnetic interference and overvoltage of the whole vehicle. Therefore, it is necessary to analyze and study the influence of pantograph arc. This paper analyzes the dynamic change process of the arc during the lifting of the pantograph system, establishes an arc model based on mutiple restrikes theory, and obtains the transient overvoltage change process of the pantograph arc. The transient overvoltage caused by the process arc decreases as the arc length decreases.