The Research On Design Of Branch Feeding For Overhead Contact Line System

In recent years,the construction of China’s high-speed railway is in full swing.A lot of new requirements for the reliability of the power supply equipment of Lanzhou station by the opening of Lanxin high-speed rail and Zhongchuan Intercity railway.The purpose of this project is to improve the reliability of the power supply equipment in Lanzhou station and meet the increasing transportation demand.After the operation of Lanxin high-speed rail and Zhongchuan intercity railway,we want to reduce the influence to the minimum of traction power supply equipment’s failure on the general speed train operation section in Lanzhou station.It is necessary to reconstruct the downlink contact network equipment of Lanzhou station.In view of this situation,according to the field survey,combined with the requirements of professional departments,and using the user’s opinion,we put forward the engineering design plan.It’s not only to improve overhead contact line equipment in Lanzhou railway station,but also to increase the power supply equipment for the downlink feeder,so as to maximize the power supply flexibility and ensure power supply reliability.After this improvement,it will reduce the impact on the high speed-rail obviously.On the other hand,in order to reduce the impact on the traction network’s overhaul of Lanzhou station,we need cut power.The branch feeding is only suitable for emergency.The project aims to improve the flexibility of power supply,reduce the fault range,lessen the time of repairing,and have a strong practical application.At the same time,it also provides reference for the operation of Baolan high-speed rail.According to the specifications,the project is built on the practical application,.It has a strong guidance and reference for the problems that may occur in design for construction and specialized application.