Development And Research Of Simulation Software For APM Traction Power Supply System

APM,Automated People Mover,is a three-dimensional,driverless rail transit system.At present,it is widely used in the field of passenger transport between airport terminals and medium and low volune urban rail transit at home and abroad.The safety and reliability of the traction power supply system is very important to the normal operation of APM system.However,there is no complete simulation modeling research on the traction power supply system in the early design of APM system in China,and the technical defects in the design scheme of the traction power supply system can not be found in time.The vehicle driving and traction Power supply system forms of APM system is diverse.Among them,the APM system with rubber wheel rail and three-phase AC traction power supply system is the most widely used.Taking three-phase AC traction power supply system as an example,the simulation and optimization design method of APM traction power supply system are studied.Firstly,in this thesis,the operating characteristics of the rubber wheel APM system are analyzed from three aspects:the rubber wheel rail system,the three-phase AC traction power supply system and the fully automatic operation signal system.According to the operating characteristics of the rubber wheel APM system,referring to the "Train Traction Calculation Procedure,(TB/T 2407-1998),the APM train traction calculation method is studied,and the train force and running state are analyzed to calculate the train running energy eonsumption.This part lays the foundation for the simulation of the load process of the traction power supply system.Then,the r-type equivalent circuit,n-type equivalent circuit and power source model are used to simulate the traction transformer,power rail and train in three-phase AC traction power supply system,and the single-phase equivalent circuit of the whole traction power supply network is established.The fast decoupled method is used to solve the node voltage equation of the traction power supply network,and the train load process simulation and train static simulation are realized,which provides the data basis for the optimization design process of the traction power supply system.Finally,in order to improve the power utilization rate of the traction power supply system and minimize the active power loss of the power rail,the model of minimizing the active power loss of the power rail is established,and an adaptive particle swarm optimization(APSO)algorithm with dynamically changing inertia weight(DCW)is used to optimize the location of the traction substation.Taking the APM system of an airport in China as an example,this algorithm is used to optimize the position of the traction substation,so that the active power l0ss of the power rail is minimized.Based on the above APM traction power supply system simulation and optimization design method,a traction power supply system simulation and optimization design software is developed using Python programming language,which can provide necessary parameters for APM traction power supply system design and operation and maintenance personnel.