专用轨回流模式转换段方案研究

专用回流轨供电制式作为一种新型的牵引供电方案,能够彻底解决杂散电流问题,已被越来越多的城市轨道交通线路采用。当列车从专用轨回流线路通过联络线进入传统走行轨回流线路时,列车需进行回流模式转换,目前在建线路均采用停车降弓方式进行回流模式转换,需司机人工操作。本文借鉴高速铁路动车组自动过分相技术,提出了一种不停车回流模式自动转换方案,并对过渡段上的供电及保护方案进行研究论述。该方案可有效提高列车在联络线上的通行效率,确保运营安全和可靠性,为后续专用回流轨供电制式线路建设提供参考。

As a new type of traction power supply scheme,special return rail power supply system can completely solve the problem of stray current,which has been adopted by more and more urban rail transit lines.When the train runs through the connecting line into the traditional running track return line from the special rail return line,the train needs to switch to the return mode.At present,all the lines under construction adopt the way of stopping and lowering pantograph to switch back to the flow mode,which requires manual operation by the driver.Based on the technology of automatic phase separation of high-speed railway multiple units,this paper puts forward an automatic switching scheme of non-stop return mode,and discusses the power supply and protection scheme on the transition section.The scheme can effectively improve the traffic efficiency of trains passage on the connecting line,ensure the safety and reliability of operation,and provide reference for the construction of special return rail power supply system in the future.