高速铁路综合接地技术研究及工程应用

Research and Engineering Application of Integrated Grounding Technology for High-speed Railway

综合接地技术是装备高速铁路的重要技术之一。总结了近几年我国高速铁路综合接地系统建设经验,结合相关科研攻关项目成果,对综合接地相关理论和关键技术研究及再创新进行了论述;重点阐述了钢轨电位和接触电压、接触网闪络保护,及无砟轨道和钢轨接地与信号系统的兼容性等相关理论研究;提出了高速铁路综合接地成套关键技术,主要包括贯通地线规格选择和敷设、接地体和接地端子设置、接地及等电位连接。相关研究成果为建立铁路综合接地成套技术体系奠定了坚实的基础,对保障高速铁路安全运营和运输效率具有重要的意义。

Integrated grounding is one of the key systems in high-speed railway.The experiences in the construction of integrated grounding for Chinese high-speed railways over recent years are summarized systematically.Combined with the achievements of relevant research projects,the researches and re-innovations on related theories and key technologies of integrated grounding are expounded.H ereinto^the theoretical researches on rail potential and touch voltage,OCS flashover protection,compatibility of grounding of ballastless track and rail with the signaling system are elaborated.Furtherm ore,a set of integrated grounding technology for railway is proposed,including specification and laying of run-through earthling cable,setting of earth electrode and earthling term inal,grounding and equipotential bonding.Relevant research results have laid a solid foundation for the establishment of a complete set of integrated grounding technology system for railway,which is of great significance for ensuring the safe operation and transportation efficiency of high-speed railway.