高速铁路弓网电弧试验系统

高速动车组通过弓网电接触获取电能。随着动车组运行速度的提高,受轨道不平顺、接触网波动以及受电弓弓头振动等因素的影响,弓网电接触状态恶化,使得弓网电弧频繁发生,弓网电弧对接触网导线、受电弓滑板侵蚀严重,影响受流质量,制约动车组速度进一步提升,因此有必要对弓网电弧进行系统研究。本文分析弓网滑动受流过程,研制一套弓网电弧试验系统。该系统能够模拟弓网柔性平直接触、滑板"Z"字形运动及垂向沉浮运动等弓网运动状态。并利用该系统对弓网接触电阻和电弧电气参数、形貌特征进行试验研究。

The Pantograph-catenary Arc Test system for High-speed Railways

High speed electric multi units(EMU) get power through pantograph-centenary electrical contact.As the EMU running velocity increases,rail surface irregularities,undulations of the catenary and vibrations of the pantograph head cause the status of pantograph-centenary electrical contact to deteriorate seriously and generate pantograph-catenary arcs frequently.The arcs erode the contact wire and pantograph strip,endanger the current-receiving quality between pantograph and catenary and restrain further raizing of the EMU speed.So it is very important to study the pantograph-catenary arcs.In this paper,the pantograph-catenary current-receiving process was analyzed.The pantograph-catenary arc test system was developed,which simulated the flexible and straight contact of pantograph and contact wire,pantograph strip zigzag movements and vertical up and down movements of the pantograph.The test system was used to study,the pantograph-catenary contact resistance,and the electrical parameters and shape features of the arcs.