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The article describes the general principles of the computational model of the traction power supply DC Railway to assess the potential energy recuperative braking, as well as ways of approbation the resulting model to determine its adequacy.

Today the most part of world commodity and cash flows is concentrated in the Pacific Rim. The strategy of development for the Far East is based on increase in export to Asia-Pacific countries and also growth of volume of foreign investments. In September, 2018 in Vladivostok at the IV East economic forum the VaninoTransUgol company will submit the construction project in seaport Vanino of transport transshipment facility with transshipment capacities to 40 million tons. In 2017 the volume of transfer of freights in Vanino port was 7,2 million tons, the seaport continues to increase the refinery capacities, but the insufficient capacity of infrastructure of railway transport is the limiting element of development of the transport hub. Construction of the new terminal for transfer of coal will demand corresponding development of railway infrastructure of the Vanino transport hub. In the conditions of increase in volumes of transfer of freights, it is necessary to resolve an issue of the extreme number of cars which can be processed in "the railway station-seaport" system. The author has developed the program of imitating modeling which allows to determine the capacity of a railway component of the transport hub at the existing hardware and in the conditions of increase in loading of "the station-the port" system. In this work results of imitating modeling of work of the Vanino transport hub at increase in unloading of coal by 40% up to 280 cars a day are presented. The working park of the Vanino station has made 305 cars and continued to increase, ways of the station have been filled with cars waiting for operations. Two groups of possible ways of increase in capacity of the transport hub - infrastructure and technology solutions are presented. In the conditions of limitation of territorial development, construction of additional railway infrastructure becomes impossible therefore it is possible to increase the capacity of the transport hub due to change of specialization of moorings of port. It will allow to reduce the number of the cars which are on the ways of the station waiting for unloading and to accelerate processing of the rolling stock. After re-equipment of moorings of port, the working park of the Vanino station has made 230 cars and the capacity reserve for reception of an additional traffic volume has appeared. By means of this program of imitating modeling it is necessary to analyse work of key transport hubs of the Far East for definition of the maximum traffic volume at which transport hubs will steadily function, in the optimum mode.