Research On Model Of Subway Electric Power Dispatch Simulation System Based On Train-network Coupling

With the rapid development of the metro construction and the safety requirements for the metro is increasingly strict,the business skills for the personnel of the metro dispatching system,especially the power dispatcher are getting higher and higher.The metro power dispatching simulation training system is a new type of Metro Power Dispatcher Training in recent years,which greatly shortens the training cycle,and improves the training effects.Reasonable modeling and calculation of the metro power supply system is the prerequisite to build the efficient metro power dispatching simulation training system.Most of the existing metro power supply simulation systems are only considered from the structure of the power supply system itself,with little consideration to the coupling relationship between the traction power supply system and the train traction drive system,so they can not accurately describe the actual effective subway line on the site,and it is very difficult to simulate the coupling condition of the vehicle network in the multi vehicle operation,which leads to the large error of the power flow value of the medium voltage loop and the traction power supply system,which is not easy to identify the running state of the power element and the train operating condition.Therefore,this paper adds the trains model into the Traction Power System to build a train-network simulation model and presents a power flow calculation method of the Metro Traction Power System,combining the tractive characteristic of the Metro Train Traction Drive System and the relation of train-network,then analyses the influence of the trains on the traction network and the traction network on the trains performance,and discussed what effects the multi-train operation and the different departure intervals have on the whole traction network voltage fluctuation.The experimental results indicate that the train-network coupling model built in this paper can describe the coupling relation between the trains and the traction network in the actual system of metro more accurately,which not only makes the existing metro power supply simulation systems more perfect and realistic,but also has some certain guidance functions on the capacity design of the Traction Power System and the schedule of timetable.Finally,this paper applied train-network coupling model to the design of Qingdao Metro Line 3 power dispatching simulation system.The simulation results show that this model does not improve the authenticity and reliability of the power dispatching training,but also combine the train dispatching system,environment control dispatching system and the power dispatching system together to realize the Joint simulation training,which is of important theoretical and practical significanceBased on the train-network coupling,the metro power dispatching simulation system realizes the simulation of the real system,and can train the metro Power dispatcher more effectively,thus laying a solid foundation for the subsequent realization of the more complicated and complicated subway integrated training simulation system.