Design Of Lightning Protection For Electronic Information System Of Dalian Metro

With the continuous development of Chinese urban rail transit project, the subway has become the main means of transport for people to travel. Today’s subway is a modern urban transportation infrastructure, which is composed of electromechanical system, electric system and electronic information system. And electronic information system is the core and key of the safe operation of these systems. However, the electronic information system is relatively sensitive to the natural phenomenon of thunder and lightning. In recent years, due to the impact of thunder and lightning, much serious damage has been brought to the subway construction of many cities in China. And great threat has brought to the people in the subway at the same time. Therefore, the subway lightning protection is widely concerned. With the development of this beautiful coastal city of Dalian in recent years, it has finally entered the subway times, but because of the special geographical environment of the coastal city, it is more difficult than the inland cities in building of the subway. At the same time, because of the more significant thunderstorm season, the bad weather has brought a great threat to the Dalian Metro electronic information system. The investment of Dalian Metro is huge, and Dalian Metro has realized the national leader in unmanned technology, and the Dalian subway electronic information system is to maintain the normal operation of the central nervous system, so once the system comes across the lightning or lightning wave intrusion, immeasurable result will be taken to the entire Dalian subway line normal transportation order, and even cause significant casualties and huge economic losses. So in this article, first we will analyze the characteristics of lightning in the area of Dalian. Second, we’ll choose the lightning data in the key metro line of Hekou Station for analysis in depth. Third, we can obtain the lightning protection level of Hekou Station electronic information system. And then, to table a proposal to the lightning protection of Hekou Station electronic information system by combining the lightning protection level of Hekou Station electronic information system and the relevant industry standard requirements.Based on the electrical diagram of all buildings of Hekou Station, it carries on the analysis on surge protection device of electronic information system. We could put forward the lightning protection design requirements about Hekou Station electronic information system. In the end, by combining the lightning protection design requirements of Hekou Station electronic information system and all of the questions in the analysis of the Hekou Station’s drawing, we can put forward reasonable suggestions for improving the lightning protection level of Dalian Metro electronic information system based on the result.