中文摘要：

高速动车组列车运行时的车体振动使得受电弓和接触线之间产生电弧放电,从而产生电磁骚扰,研究由弓网离线电弧放电形成电磁骚扰的特征,为评估电磁骚扰对动车组安全的影响提供依据.本文针对动车组极高的运行速度与高速接触网系统振动方程导出弓网的离线概率、弓网接触力和接触线动态抬升量与速度的关系;建立了弓网电弧放电模型,对弓网电弧离线放电的电磁骚扰进行仿真;最后,分析了不同车速条件下,弓网离线电弧放电电磁骚扰发生的频率、大小的变化趋势.

英文摘要：

Due to extremely high vehicle speed of high speed EMU, arc discharge is generated by vibrations between pantograph and contact line. Consequently, electromagnetic harassment comes out. The electromagnetic harassment must be studied in order to propose a basis which further evaluate the affects of such harassment on safety of high speed EMU. In this paper, firstly, relationship among vehicle speed versus pantograph off-line probability, pantograph contact force and contact line dynamic uplift is built up via pantograph system vibration equation. Then pantograph are discharge model is estab-lished, and simulations are carried out. Finally, analysis under different speed conditions are presented, in view of trends frequency and magnitude of electromagnetic harassment caused by pantograph arc discharge.