Research On Optimization Of Driverless Subway Train Operation In Yan Fang Line

With the development of urban scale,subway train is becoming one of the most important public transportation tools in cities,which fulfills the largest transportation duties.However,huge power consumption caused by subway train is a large burden of city and brings significant economic and social issues.Analysis of subway train operation is currently one of the major approaches for power saving.Many parameters are involved in metro train operation:the train load,energy consumption,train running speed,travel time,scheduling,traction/braking characteristic curve and basic resistance.Through study of train operation process and optimization of control strategies and conditions,it can be achieved to increase transportation capacity cut down costs and reduce energy consumption.In this paper,the dynamic model and optimization of energy saving operation are mainly studied for the subway train in Yan-Fang line.Specific contents are as following:(1)Based on the research and development of fully automatic driverless metro trains in China,a simulation model of train system of Yan-Fang line is established.An improved single point model,which combines the convenience of single point model and accuracy of multiple particle model,is developed and applied in the simulations,(2)Genetic algorithm is used to optimize the operation of the driverless metro train,and the running time of the subway train and the energy consumption of the operation are taken into account.Advantages of the systematic train operation strategies in running time and power consumption are demonstrated by comparing with traditional strategies.(3)A traction calculation system for driverless train in Yan-Fang line is developed.The system can be used to calculate the parameters of the train for depicting important parameter curves including Time-Velocity,Distance-Velocity and Distance-Power.(4)Simulations of the scenario when accidents occurs in the subway train operation are performed.Operation time and conditions under different power losses are obtained,which has significant meaning of reference.In conclusion,this paper is based on Yan-Fang line of the Beijing subway,a simulation model of the fully automatic driverless metro trains is established,and studies the optimization problem of the integrated control strategy in the operation of the driverless metro trains,in order to do some basic research work for the operation of the fully automatic driverless metro.