Theory Of Trains Coordinated Optimization Operation And Its Application

In the coal mine areas in northwest China, the coal transport lines, from the mine to the railway station or pithead power plant, are very complicated. Thus, the traditional railway can't be used, and the road transportation has severe disadvantages of high cost and heavy pollution. So, a major project of "11th Five-Year" State Science and Technology Support Plan was set up by the Ministry of Science and Technology to research the innovative rail transportation system fitted to such complicated lines, and with the characteristics of energy-saving and environment-friendliness.The traditional train optimization operation theories, taking the coasting as the means of energy saving, cannot fit such complicated lines and is suitable for the single train only. Meanwhile, the highly complicated line will cause the risk of train collision.Therefore, to research the train optimization operation theories, which take the regenerative braking and multi-train coordination as the major technical means of energy saving and meet safety constraints, has theoretical significance and application value.On the background of the "11th Five-Year" State Science and Technology Support project, a multi-train coordinated optimization operation method based on regenerative braking and safety constraint is studied in this dissertation, and then its application is researched relied on the experimental line. The main work is as follows:Firstly, based on regenerative braking, the optimization operation theory for single train running in the complicated line is researched.Based on regenerative braking, the single train optimization operation method, for some typical complicated lines, is given.On the assumption that the renewable energy can be fully used, and with the time constraints, the lower bound of the renewable energy efficiency is given and the single train optimization operation with regenerative braking is proven to be more energy-saving in the complicated line. Furthermore, with the objective of the energy-saving and time-saving, the single train multiple objective optimization operation method is obtained based on regenerative braking.Secondly, based on regenerative braking, the multi-train coordinated optimization operation theory in the complicated line is researched.The feasibility that the regenerative energy can be used completely in some typical complicated lines is analyzed, laying the researching foundation of the multi-train coordinated optimization operation theory based on regenerative braking.Moreover, a multi-train and multi-object dispatch method for energy-saving with safety constraints is researched, and the flexible time constraint model is established. On this basis, the multi-train coordinated optimization operation algorithm with the constraints of flexible time and safety is got.At last, with the experimental line as the background, a multi-train coordinated optimization operation system is developed, tested and verified.According to the requirements of the experimental line, a multi-train coordinated optimization operation system is developed. A train equivalent energy consumption model is got from the data of the experimental line. Based on this model, the application research is done with the experimental line as the background. The results show that the multi-train coordinated optimization operation method proposed in this dissertation based on regenerative braking, with flexible time and safety constraint, can decrease the energy consumption greatly and improve the traffic volume dramatically in the condition of complicated lines.