Research On High Speed Railway Operation Simulation System For Train Operation Adjustment And Optimization

In the development plan of China’s intelligent high-speed railway,the intelligent CTC system is used as the dispatching and command system of the intelligent high-speed railway.When an emergency occurs during the operation of high-speed railway,this system should have the function of automatic adjustment of high-speed railway operation to improve the punctuality of high-speed railway.In order to verify the adjustment scheme of high-speed railway operation,this essay designs and develops a high-speed railway operation simulation system using C# language by reference to CTC system.The system realizes the function of constructing high-speed railway simulation network through graphic interaction,and realizes the fast simulation of on-time and delay scenarios through distribution design.In this essay,a train operation adjustment algorithm based on Particle Swarm Optimization(PSO)is designed,and the feasibility of the algorithm is verified by the simulation system.The main research contents of this paper are as follows:(1)Design of the general structure of the high-speed railway operation simulation system.The system data layer,including basic data and real-time data,is designed,and the database is designed based on My SQL.In order to realize the distributed design of the system,the communication between modules is realized through Rabbit MQ message middleware.This distributed design will improve the performance and simulation speed of the system.(2)Function design and implementation of high-speed railway operation simulation system.Based on the distributed structure,the system is designed to have three functional modules: high-speed railway network configurator,simulation process manager and highspeed railway network operation simulator.Based on MATLAB,the generator of highspeed railway scheduling scheme is implemented to adjust the running plan of high-speed railway under the scenario of delay.The high speed railway network configurator module realizes the graphical network building function.The simulation process manager module realizes the simulation experiment configuration and other functions,and can generate delay scenarios by setting temporary speed limit and section blockade.The high-speed railway network operation simulator module realizes the functions of speed-up simulation and train speed curve generation at stations and sections,and can realize the train simulation according to the train running scheme given by generator of high-speed railway scheduling scheme.(3)External communication interface design and implementation.The communication interface between the simulation system and the external system is designed to realize the communication between the simulation system and the scheduling scheme generator module of high-speed railway.In order to verify the feasibility of the phase plan of the actual scheduling system,a data transmission module based on text recognition is developed to obtain the phase plan of actual scheduling system and verified with the actual scheduling system.(4)The construction of simulation network and the test of train adjustment algorithm.A train operation adjustment model is established,and the total delay time obtained by simulation is taken as the evaluation index of the train operation adjustment scheme.Particle Swarm Optimization algorithm is used to solve the adjustment problem,and the designed scheduling algorithm is integrated into the generator of high-speed railway scheduling scheme.A typical high-speed railway train delay scenario is set,and the scheduling algorithm adjusts and optimizes the train running scheme according to the train delay information in the simulation system,and then returns to the simulation system to verify the feasibility of the scheduling algorithm generating scheme.