Simulation And Energy Consumption Calculation Of Metro Multi-train Energy-saving Operation Scenarios

With the gradual acceleration of the progress of urbanization in China,the problem of urban traffic congestion and urban air pollution has become increasingly serious.The subway system has been greatly developed because of its large capacity,safety and efficiency,and energy conservation and environmental protection.Although the subway system is already the most energy-efficient mode of transportation in land transportation,with the rapid growth of its operating mileage,the energy consumption of the subway system is exploding and its total energy consumption is already huge.The increase in energy consumption has not only increased The pressure of operating units also has an impact on the country’s energy conservation and emission reduction strategies.Among them,the energy consumption of train operation accounts for a very important part of the energy consumption of the subway system.Therefore,how to analyze and calculate the energy consumption of subway train operation in detail has important significance for the optimization of the energy consumption of the subway system.This thesis studies the calculation of the energy consumption of multiple subway trains under the influence of the dynamic characteristics of the number of trains and the running direction in the same power supply interval within a running interval.This paper first analyzes the dynamic model of a single train in detail,and gives the results of different train traction strategies.The simulation method of single train running curve,combined with the traction braking characteristic curve of the train to analyze the power requirements of trains in different states,and based on the characteristics of the subway traction power supply system,the basic circuit of each component of the subway traction power supply system was established,etc.Effect model.Then,the dynamic time-varying characteristics of the subway system operation are used to discrete the single train operation scene into a dynamic multi-train operation scene,and the corresponding scene is combined with the equivalent model of the subway traction power supply system to fully consider the use of regenerative braking and traction grid voltage.The impact of the braking process,combined with the switching mechanism of regenerative braking and resistance braking inputs,proposes a dynamic multi-train operation scenario energy consumption calculation model that combines the train dynamics model and the traction power supply model,and gives the circuit power flow calculation method to A model solving algorithm based on Gauss-Seidel iterative method is developed to achieve accurate energy consumption calculation under dynamic multi-train operation scenarios.Finally,based on the above research ideas,this article builds a dynamic energy consumption simulation calculation and analysis platform for dynamic multi-train operation scenarios.The simulation and analysis of the train operation energy consumption simulation examples on the simulation platform demonstrates that the dynamic multi-train operation scenarios designed in this thesis can The energy consumption calculation method and simulation platform can analyze all the train operation scenarios existing in the same power supply interval within an operation interval,and can realize the accurate calculation of train operation energy consumption from the perspective of power energy consumption.The choice of manipulation strategy and train scheduling have important guiding significance.