Research on Electromagnetic Radiated Disturbance of Pantograph Arc in High-speed Railway

Pantograph arc is one of the electromagnetic compatibility problems to affect the safety of the high speed railway and has become the key factors needed to be solved urgently. Based on the measured electromagnetic radiated disturbance of pantograph arc in field test, this paper analyzes the principle of pantograph arc and the arc signal in time domain and frequency domain respectively. According to the measured arc signal in time domain, the research sets up a pantograph arc space radiation model to simulate the radiated disturbance in railway. The high frequency radiated field outside the car decays faster than the low frequency along the distance from the pantograph. The disturbances of arc in all positions inside the car are almost the same intensity and have no relationship with the pantograph position. This could be certain reference to place the equipment and system inside and outside the car.