天津站交通枢纽接地方案研究

Analysis of the Electrical Grounding Design of Tianjin Station Traffic Hinge

针对天津站交通枢纽工程防雷接地与杂散电流防护之间存在的矛盾,结合GB50157—2003《地铁设计规范》、CJJ49—92《地铁杂散电流腐蚀防护技术规程》及目前地铁接地应用现状,对天津站交通枢纽工程利用结构接地的方案进行了深入分析和探讨。介绍了适合于天津站交通枢纽工程的主体结构接地方案,并对地铁全面采用结构接地的方案进行展望。

According to the ＂Regulation for the substation design＂ GB 50157-2003 and the ＂Regulation for the scattering current protection technology of the substation＂ CJJ 49-92, this paper makes a deep analysis of the structure earthing design for the traffic hinge of Tianjin Station, aiming at solving the contradiction between earthing for light protection and the stray current protection. Then the author proposes a proper earthing design method which is suitable for the traffic hinge of Tianjin Station project, together with a prospect of the overall substation structure earthing.