高速铁路接触网直流融冰技术

DC-based Deicing Technology for OCL of High Speed Railway

接触网覆冰会损坏供电设备甚至造成动车组大面积停运,严重威胁高速铁路安全,接触网融冰技术是保障铁路安全的关键技术之一。对接触网覆冰危害进行分析,梳理防覆冰技术研究应用现状,提出一种基于牵引变电所内变压器输出的27.5 kV交流电源,经直流融冰装置转换成直流电,在导线电阻中产生热量融化接触网覆冰的解决途径,并给出相关技术指标、装置组成及三级保护设置方案。

OCL icing will damage power supply equipment and even cause large-scale outage of EMUs,which seriously threatens the safety of high speed railways.OCL deicing technology is one of the key technologies to guarantee railway safety.Based on analysis on the hazards of OCL icing and review of the research and application status of anti-icing technology,this paper presents a solution of converting the 27.5 kV AC power supply output by the transformer in traction substation into DC power supply through a DC-based deicing device to generate heat in wire resistance for OCL icing,and gives relevant technical indexes,device composition and three-level protection setting scheme,etc.