编组站作业优化研究

Study on Operation Optimization of Marshaling Station

充分高效地利用编组站既有设备完成各项作业组织是车站的核心工作。在列车运行图和站型确定的情况下,通过分析编组站接发列车作业、本务机作业、调车作业以及站内技术作业等业务,建立以各项作业等待时间之和的二阶矩最小为优化目标的编组站模拟运输的数学模型,讨论模型目标函数的求解。通过实验评价模型的兑现率和目标函数值(均衡紧凑度),说明通过模型较好地拟合现场作业,其作业的均衡性和紧凑性都明显优于实际现场作业,采用模型优化能够均衡、紧凑地安排各项作业的次序、时机及占用资源,使车站作业组织整体达到最优化。

It is the core work of railway stations to make full and efficient use of the existing equipment of marshaling station to complete various operations.With the train working diagram and the station type defined,the mathematical model of simulated transport of marshaling station with the optimization objective of minimizing the secondary moment of the sum of waiting time for each operation is established through the analysis on train reception and departure operation,leading locomotive operation,shunting locomotive operation and technical operation within the marshaling station,and the solution to the objective function of the model is discussed.The fulfillment rate and objective function value(balance and compactness)of the model are evaluated through experiments,indicating that the balance and compactness of the well simulated field operation through model are obviously better than the actual field operation.The model optimization can be used to arrange the order,opportunity and occupied resources of each operation in a balanced and compact manner,and to optimize the whole operation organization of the station.