Experimental Study on the Transient Disturbance Characteristics and Influence Factors of Pantograph–Catenary Discharge

The transient electromagnetic disturbance generated by arcing discharge between the pantograph and catenary can pose a significant risk to safe operation of electrified railways. In order better comprehend its properties, pantograph–catenary generating device is designed simulate phenomenon with moving electrodes in this experimental investigation. effects applied voltage, gap distance, relative motion on time- frequency-domain features current field are investigated. variation trends pulse peak current, rise time, repetition frequency, maximum amplitude, characteristic frequency radiation spectrum retrieved under varying settings, effect mechanisms derived from physics gas discharge. A dynamic test conducted study further understand electrodes’ characteristics. results indicate that lateral sliding along track has negligible discharge, whereas faster vertical approaching generates larger peak, steeper front-edge, higher intensity.