Design Of Traction Station System

Electric traction has been widely used in railway reconstruction with its unique power transmission mode,which has relieved traffic pressure.Because of the complexity of traction system,the existing railway network can not meet the demand of electric traction.In order to obtain more stable quality of railway transportation,relevant departments need to electrify the existing railway in order to improve electric traction.Quality,avoid excessive impact on the surrounding environment.In order to optimize the railway network and improve the quality of transportation,the government of Harbin has started the electrification transformation of railway lines and equipment.As an important part of the railway network,the electric traction station needs to be reformed and optimized.In this paper,Shangzhi traction station is taken as the main research object.Through the integration analysis of engineering demand and actual situation,three kinds of traction station access system schemes are planned and designed.Through calculation and analysis,it can be seen that the power flow distribution of the three access schemes is relatively uniform,involving nodes meeting the relevant voltage standards,and there is no overload and overload problem;the transmission lines of each access scheme are in three phases.Under the influence of short-circuit fault,it can still maintain stable transmission state.Based on the calculation and analysis of the minimum annual cost method,it can be seen that scheme 1 has better economy,and its static total investment and annual consumption cost are relatively small,so it can be used for the electrification transformation of Shangzhi traction station.In order to ensure the scientific and rational design of traction station system,the system planning of this project is carried out from the aspects of electrical design,power supply engineering,relay protection,dispatching automation and electrical control.This paper combines theory with practice,provides data reference for intelligent transformation of Harbin power grid,and lays a foundation for site selection and construction of traction station in the future.