接触网导线热过负荷保护的探讨

针对电气化铁道运行现状和铁路运输情况的变化,分析了目前电气化牵引变电所馈电线继电保护设置存在的不足,阐述了设置接触网导线热过负荷保护的必要性和保护原理,并结合国外过负荷保护装置的情况,提出了我国电气化铁道接触网导线热过负荷保护方案。

Discussion on OCS Conductor Thermal Over-load Protection

On basis of analyzing the status of current electrified railway operation and transportation, the paper analyses the deficiency of relay protection device of feeders in traction substation, illustrates the necessity and the protection principles in setting thermal overload protection device for OCS conductor, introduces the overseas situation of thermal overload protection and gives the overload protection scheme for thermal overload protection of OCS conductor of electrified railways in China.