Research On The Issues Of Optimizing Operating Plan For Marshalling Station

ABSTRACT: As factory of the compositions of trains, marshalling yards is mainly in charge of adaptation of train traffic stream, own sophisticated technical facilities, handle technical operation of freight trains and wagons. Operative plan compilation works is the kernel of dispatching and conducting of marshalling stations(MS), it's quality directly affected the order and efficiency in MS transportation production.therefore,as the kernel issue of transportation production theory, the optimize compilation problem in MS operation plan is always the focus of transportation experts and scholar pay attention to.however,in terms of actual situation, our country's MS operation plan compilation is not quite intellectualized and automatized, the compilation quality couldn't sufficiently fit in the existed request of MS dispatching and conduction works. Accomplish with the constant propel of state's railway informationized engineering , further research on both theory and method of MS operating plan optimize to enhance intellectualized decision making ability and seek for efficient procedure of MS operation plan compilation optimization becomes a burning question. With regards to this. This paper study on MS operation plan mainly contents is as follows:1,By means of analyze the content and process of railway marshalling station operative plan compilation in detail, pointed out the optimizing problem and strategies of MS operation plan, investigated the feasibility of applying optimizing production scheduling operation plan compiled theory and method to MS scheduling optimizing problem, proposed the idea of treat the MS scheduling problem as open loop job-shop scheduling problem ,finally, the formal expression based on job-shop scheduling problem theory was brought up.2,Research on optimization schedule issue of organized group day shift. The core of day shift schedule is to make sure the vehicle flow resource of planned vehicle of setting out. This thesis analyses and refers to the existed day shift planned vehicle flow which connects optimization research achievements and also it builds vehicle flow continuing optimization model based on single and double vehicle adjusting systems. Because the space property and operational property of resource vehicle flows change constantly with time, the thesis designs space condition transfer equation of vehicle flow to express the making of designated time period and usable vehicle flow resource. I used the shortest time of all the vehicle stay in the station as the model optimization aim, through related control, Selected vehicle resource of day shift schedule and made vehicle setting out plan and analyze the confliction and distribution methods produced from vehicle connection optimization. Finally, this thesis gives vehicle connection optimization measures in station and optimization plan of group transportation organization under unbalanced transportation condition.3,Research on the optimizing compilation problem of MS stage plan. The content of stage plan compilation was to determine the train dissolution and group operation plan as well as the scheme of arrival and departure track and shunting engine involved under the situation of the traffic stream connection sequence was curtained. paper based on the production scheduling optimizing theory and method of discrete event dynamic system ,by model station track and hump as machine, train or wagon waiting for technical operation as job, and the moving of train or wagon as operation, constructed the related optimizing model of the traffic stream connection sequence in ms stage plan and the coordinate optimizing plan of arrival and departure track and shunting engine operation, corresponding solution procedure are depicted too.4,Finally, an example based on the production data of Yingtan marshalling station was presented to verify the feasibility of the model and solvers described before, and the proposal result evaluation was carried out after all.