Research On The Compilation Of Energy-saving Train Diagram Considering The Optimization Of Stopping Schedule Plan

Railway plays an important role in social development with the characteristics of large traffic volume,precise arrival and departure times,security and less energy consumption per unit.With the continuous increase of China’s railway operation mileage and the gradual complexity of the railway network,especially with the rapid development of the two major trends of "high-speed passenger transport" and "heavy freight transport",the problem of huge energy consumption of the whole railway system must be paid attention to.How to reduce energy consumption has become the key to the sustainable development of railway system.In the total energy consumption of railway system,train operation energy consumption accounts for 70%.Therefore,the energy-saving operation of the train has become an effective way to reduce the overall energy consumption of the railway system.However,the existing researches mainly focus on the adjustment of train operation status and the redistribution of interval operation time,which not only rely too much on the driver’s operation experience,but also lack the influence of stop schedule plan on energy consumption.Reasonable stop schedule plan can not only reduce the energy consumption of train traction and braking,so as to reduce the energy consumption of train operation,but also realize the energy saving method by adjusting the stop scheme,which is simple and easy to operate in practice.Therefore,this paper mainly considers the influence of line conditions and train attributes on the energy consumption of train traction and braking,analyzes the influence of stop schedule plan on energy consumption,and studies the optimization of stop schedule plan to achieve energy saving.The main contents of this paper are as follows:(1)This paper introduces different calculation methods of train operation energy consumption from dynamics and electric energy.Traction simulation method is used to analyze the energy consumption of train operation from three aspects of line condition,train attribute and transportation organization mode,and the relationship between the energy consumption of train operation and various factors is obtained.In particular,the impact of stop scheme on train energy consumption is analyzed,and the optimization strategy of train energy saving is proposed.(2)In order to minimize the change of train diagram before and after optimization and the energy consumption of train operation,this paper proposes an energy-saving train diagram optimization model,which allocates the invalid stop time without changing the train departure and arrival time.According to the characteristics of the model,an iterative optimization algorithm is designed.Taking Qinhuangdao Shenyang passenger dedicated line as an example,the experimental results show that the energy consumption is reduced by 1880.3 kWh.(3)The energy-saving train diagram optimization model considering the optimization of stop scheme is established to optimize the technical stop location of freight train,and the minimum energy consumption of minimum train stop is taken as the objective.Design tabu search algorithm + CPLEX to solve the model.Taking Denghu Ji’an section of Haoji railway as an example,the feasibility of this method is proved,and 12.18% energy consumption is saved.