高速公路机电系统过电压保护与防雷接地设计

Design for Overvoltage Protection and Lightning Grounding of Expressway Electromechanical Systems

高速公路机电系统的特点是既有强电设备,又有大量的监控、通讯、收费等弱电设备,这些都是容易受到雷击或雷电感应的薄弱点。通过理论分析并结合工程实际,给出了高速公路机电系统过电压保护和防雷接地的体系和实现,分析了雷电对机电系统的危害途径,提出了雷电的接闪分流接地、等电位屏蔽布线以及过电压保护等设计内容,阐述了应从各个方面完善机电系统的雷电防护工程,达到防雷减灾、将雷电灾害降至最低限度的目的。

Expressway electromechanical system is characterized by both strong electrical equipment and a lot of surveillance,communications,electronic equipment,which are prone to lightning strikes.In this paper,the overvoltage and lightning protection of expressway electro-mechanical systems are theoretically studied with practical project.The lightning damage on the electro-mechanical systems approach,the direct lightning stroke protection,induction thunder protection,earthing devices and over-voltage protection design elements are analyzed.The expressway electro-mechanical systems should be perfect in all aspects to minimize lightning disaster purposes.