Development and analysis of dynamic optimization model of transport flows interaction at port terminal

Abstract

An approach to the construction of the dynamic optimization model for operational control of spotting freight trains at the port terminal, as well as the process of transferring cargo from cars to warehouses and from warehouses to vessels under a given arrival schedule of vessels at the terminal is proposed. In this case, the port terminal is considered as a part of the logistics system. It is assumed that the terminal capacity is limited only by the warehouse capacity. The approach is based on the methods of inventory management theory, namely, the Wagner-Whitin generalized dynamic model. Two optimality criteria such as maximum profit of the port terminal operator and minimum total costs associated with the transfer of cargo and demurrage of vehicles on a given planning horizon are considered. The optimization problem is reduced to a linear programming problem of a special form. A numerical example showing the practical usefulness of the model in the operational planning of the terminal is given.