Improvement of graphical model of railway stations functioning

Козаченко, Дмитро Миколайович; Verlan, Anatoliy I.; Korobyova, R. H.

doi:10.1109/dasa51403.2020.9317139

Cited by 3 publications

(2 citation statements)

References 14 publications

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“…On the basis of statistical processing of the results of compu tational experiments performed using the simulation model of the station [26], it was found that the dependence of the car number directed to the screening track n rs,i on the daily number of cars of the i th destination coming to the processing is a quadratic…”

Section: Introductionmentioning

confidence: 99%

Optimization of track distribution of industrial railway stations between car designations

Nurzhaubayev,

Grevtsov,

Korobiova

et al. 2023

Nauk. visn. nat. hirn. univ.

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Purpose. To improve the method for distributing the tracks of industrial railway stations for the accumulation of car groups between separate assignments. The optimization problem is to find such a distribution of classification work between the industrial marshalling yard and freight stations, as well as such a distribution of marshalling yard tracks between individual destinations, which ensures the minimum time expenditures on shunting work. Methodology. The studies were carried out using the methods of the theory of railway operation, simulation modeling and dynamic programming. Findings. The optimization problem of distribution of sorting work between the marshalling yard and freight stations of an industrial enterprise, as well as searching for such a distribution of marshalling yard tracks between individual destinations, which ensures the minimum time expenditures for shunting work, has been solved. Originality. The paper proposes a method for formalizing and solving the problem of distributing the tracks of industrial railway stations for the accumulation of car groups between individual destinations as a dynamic programming problem. Unlike the existing methods, where the number of tracks is considered as a constraint, in the proposed method, the number of tracks is an objective function argument of minimizing the duration of shunting operations, which improves the quality of the solutions obtained. Practical value. The method proposed in the paper, due to the rational distribution of the existing track arrangement of railway stations, makes it possible to reduce the time expenditures on the making- and breaking-up the trains and shunting transfers and, due to this, increase the carrying capacity of the stations, as well as reduce the cost of production of enterprises.

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Section: Introductionmentioning

confidence: 99%

Optimization of track distribution of industrial railway stations between car designations

Nurzhaubayev,

Grevtsov,

Korobiova

et al. 2023

Nauk. visn. nat. hirn. univ.

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“…Another approach that is widely used in planning shunting work is related to the use of various simulation models to perform computer calculation experiments [15,16]. In particular, such an approach is applied in the works by Ivic, et al [17], Hirashima [18] when choosing the order of multi-group train formation, by Belosevic & Ivic [19] when solving the problem of forming the outcoming traffic volume of multi-group trains from the incoming traffic volume of trains, by Kozachenko, et al [20] and Sivitsky, et al [21] when solving the problem of technical and operational assessment of the railway station. The general scheme of conducting research in the works [17][18][19][20][21] is that the dependencies obtained in them are based on statistical processing of the results of calculation experiments.…”

mentioning

confidence: 99%

Improvement of the method of time rationing for assembling car groups on one track

Kozachenko,

Gera,

Taran

et al. 2024

Nauk. visn. nat. hirn. univ.

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Purpose. To improve the method for standardizing the duration of the shunting operation of assembling cars on one track. This can be achieved as a result of solving the following research problems: development of a method for searching the optimal order of assembling cars on one track; distribution parameters estimation of the random value of the duration of shunting operation of assembling cars on one track based on calculation experiments. Methodology. During the research, the methods of theory of railway operation, dynamic programming and mathematical statistics were used. Findings. Research on the assembling process of car group to one track established the distribution parameters of the random variable of time spent for shunting. In the course of the research, the problem of choosing the optimal order of shunting operations during car assembling was formalized and solved as a problem of dynamic programming. The time spent for shunting work was chosen as the optimality criterion. The paper considers the possibility of approximating the data of calculation experiments by analytical dependencies. It was found out that the use of linear polynomials with interaction allows obtaining dependencies describing time standards with a relative accuracy of ±5 %. Originality. The method is improved for developing the time standards for shunting work, which, unlike the existing one, is based on the performance of a series of calculation experiments, each of which solves the optimization problem of finding such an order of assembling cars that ensures minimum time consumption for shunting. Practical value. The methods developed in the work and the dependencies obtained allow improving the quality of decisions made when developing technology and designing railway stations and sidings of industrial enterprises.

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Research of unit train loading technologies at the sidings of grain elevators with their shunting locomotives

Vernyhora,

Korobiova,

Suslov

et al. 2024

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The purpose of the study is to increase the unit train load efficiency at the elevators having their shunting locomotives. The research is based on the analysis of time series, methods of organizing the operational work of railways, and methods of traction calculations. The paper considers the problem of organizing shunting work at elevators when loading grain unit trains. Critical wear and tear of shunting locomotives in railway transport of general use necessitates using their locomotives at the elevators. As a result of the research, the dependence of the duration of shunting and cargo operations on the number of cars in the unit train and on other factors was established. Various types of shunting locomotives were compared. Based on the analysis, it was established that it is advisable to use four-axle shunting diesel locomotives with hydraulic transmission for shunting work at the elevators. The traction force of such locomotives is sufficient to deliver empty cars to the elevator at a speed of 14–15 km/h. Loaded cars can be removed at a speed of 14–15 km/h with a slope of the connecting track up to 2–5 ‰. With greater slopes, the removal of loaded cars should be performed at a speed of 5 km/h. The main factor affecting the duration of shunting operations is the distance of delivery and removal of cars. Technologies for loading the grain unit trains at the elevators, providing for the presence of cars at the loading stations for two and three days, have also been developed. The main factor affecting the duration of unit train loading is the staff of locomotive assembly teams. The originality of the study is in obtaining the dependence between the parameters of the technical support of the elevators and the duration of the presence of cars in the connecting station – elevator’s siding system. The practical value of the paper is that its results can be used in the design of the reconstruction of existing and construction of new elevators, as well as in the estimation of costs associated with various loading technologies of the unit trains for the corresponding sidings.

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Improvement of graphical model of railway stations functioning

Cited by 3 publications

References 14 publications

Optimization of track distribution of industrial railway stations between car designations

Optimization of track distribution of industrial railway stations between car designations

Improvement of the method of time rationing for assembling car groups on one track

Research of unit train loading technologies at the sidings of grain elevators with their shunting locomotives

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