Research On Lightning Protection Of Catenary In Guangzhou-zhuhai Intercity Railway

Since the opening of the Guangzhou-Zhuhai Intercity Railway in 2011,the contact network of this line in our section of the pipeline has been increasing year by year due to lightning strikes,which has increasingly affected the transportation order of the Group and threatened the personal safety of passengers.Most of the catenary trips caused by these lightning strikes are due to the flashover grounding of the insulated parts of the catenary after the lightning strike.This article briefly introduces the composition,power supply method and characteristics of the high-speed railway contact network system,as well as the weather conditions and line conditions of the region where the GuangzhouZhuhai Intercity Railway is located.The situation was analyzed.On the basis of the current technical specifications,combined with the operation experience of other lines and related technologies at home and abroad,it was proposed to set up a lightning protection line on the contact network of the Guangzhou-Zhuhai intercity railway to reduce the number of lightning trips and improve the protection of the Guangzhou-Zhuhai intercity railway.Lightning capacity,stabilize the order of railway transportation.By using the rolling ball method to calculate,the erection height of the catenary lightning protection line is obtained and optimized through construction transformation.After a comparative analysis of the trip data of the Guangzhou-Zhuhai Intercity Contact Network before and after the installation of the lightning protection line,the conclusion of this method's remarkable effect is drawn,which has accumulated experience for the optimization of the lightning protection measures of China's railway contact network,and also designed for the future high-speed railway design.The stage standard lightning protection measures provide a reference.