隧道工程的电气系统设计

Electrical System Design of Tunnel Engineering

随着城市化进程的推进,隧道是城市道路跨越江河、穿越高山等的重要方式。由于隧道工程的特殊性,对于电气系统的要求也与一般市政工程有所不同。该工程位于广东省,隧道全长880 m,道路等级为城市主干路,隧道内包含2个雨水泵房、一个废水泵房,隧道外设置管理中心。通过实例介绍了隧道电气工程的设计内容与思路,主要设计内容包含负荷等级、电源要求、供配电系统、无功补偿要求、防雷接地系统、电缆选型与敷设、隧道照明计算、一般照明灯具的布置方式、应急照明灯具的布置方式、照明系统供电等。

With the advancement of urbanization,tunnels are an important way for urban roads to cross rivers and mountains.Due to the particularity of tunnel engineering,the requirements for electrical system are also different from general municipal engineering.The project is located in Guangdong Province,with a total length of 880 m and a road grade of urban trunk road.The tunnel contains two rainwater pump houses and one wastewater pump house,and a management center is set outside the tunnel.This paper introduces the design contents and ideas of tunnel electrical engineering through examples,including load level,power supply requirements,power supply and distribution system,reactive power compensation requirements,lightning protection and grounding system,cable selection and laying,tunnel lighting calculation,general lighting fixture layout,emergency lighting fixture layout,lighting system power supply,etc.