对道路照明接地设计的思考  

Thoughts on Grounding Design of Road Lighting

作　　者：张超 ZHANG Chao(Taiyuan Urban&Rural Planning Design Institute,Taiyuan 030001,China)

机构地区：[1]太原市城乡规划设计研究院

出　　处：《建筑电气》2019年第9期63-66,共4页Building Electricity

摘　　要：电气接地可以分为功能接地、保护接地和防雷接地,不管何种性质的接地,其实质均为将电气设备可导电部分与大地可靠连接,从而保证电气设备及人身安全。而接地系统在道路照明中,以TN-S与TT系统最为常见,其中TT接地系统因为安全性更好运用也最广,结合道路照明特点对TT系统单独接地与共同接地型式的选择及运用等问题逐一进行分析讨论。Electrical grounding can be divided into functional grounding,protective grounding and lightning protection grounding.Regardless of the nature of the grounding,the essence of grounding is to reliably connect the conductive parts of the electrical equipment to the earth so as to ensure the safety of electrical equipment and people.TN-S and T T systems are the most common grounding systems in the road lighting.T T grounding system is the most widely used because of its higher safety.The selection and application of the separate grounding and common grounding modes of TT system are analyzed and discussed one by one based on the characteristics of road lighting.

关 键 词：道路照明 接地型式 TT系统 TN-S系统 接地电阻 RCD 共同接地 混合接地 

分 类 号：TU113.666[建筑科学—建筑理论] TM862[电气工程—高电压与绝缘技术]