Train energy-saving operation method based on multi-objective optimization

Abstract

The invention discloses a train energy-saving operation method based on multi-objective optimization, and the method comprises the steps: firstly obtaining the speed limiting information and slope information of each operation section in a train operation line, and then building an elementary substance point model of a train according to various basic information of the train; respectively calculating traction energy consumption Et, braking energy consumption Er and coasting energy consumption Eb of the train in each operation interval by utilizing the simple substance point model so as to construct a multi-target optimization model of the train; solving the objective function F (x) by adopting a multi-objective genetic algorithm to obtain a Pareto optimal solution set of each operation interval; and finally, obtaining an optimal speed curve from the Pareto optimal solution set corresponding to the next operation interval according to the time difference between the actual operation time when the train arrives at the current operation interval and the operation time specified by the time table. According to the train energy-saving operation method, train operation can be more energy-saving, the late or early arrival problem of the train is solved, and train operation is more intelligent, convenient and comfortable.

Description

[0001] method field [0002] The invention belongs to the field of train operation optimization, and mainly relates to a train energy-saving operation method based on multi-objective optimization. Background technique [0003] Urban rail transit is an important mode of transportation in my country. Due to its frequent operation and large transportation volume, the train consumes a lot of power. Therefore, it is of great significance to optimize the energy saving of urban rail transit train operation. In the prior art, there has been some research on the energy-saving optimization of trains. At present, the energy-saving operation methods of trains generally pre-calculate the energy-saving control sequences or corresponding train speed curves of the trains in each operation interval on the operation line on the basis of analyzing the characteristics of the train operation line and the speed limit of the train. When the train is running in the interval, Controlling the train t...

AI Technical Summary

Problems solved by technology

[0004] However, most of the current train energy-saving operation methods treat the optimization of train operation and the control of the train separately. If there is an error between them, the pre-calculated speed curves between the various driving sections will no longer be applicable

For example, when there is a delay in the train operation, if it continues to run according to the pre-calculated speed curve, the delay time will be continuously accumulated, resulting in the continuous accumulation of the time difference between the train's running time in the subsequent running interval and the running time on the timetable, As a result, the train operation not only affects the subsequent train operation but also consumes more energy

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