Methodology for designing models of digital twins of train traction power supply processes

Abstract

The paper presents a methodology for designing models of digital twins of train traction energy supply processes, which provides the correct selection of factors and identification of parameters of a multifactor model for the territorial branches of JSC Russian Railways. 

The following processes of power supply were considered: electricity consumption for traction, specific electricity consumption, imbalance of traction power supply. As independent variables of the model, the processes of freight transportation and the processes to ensure them were studied: cargo loading, cargo turnover, train speed, indicators of the use of electric locomotives, wagons, etc. According to the results of the validation procedure, it was established that it was possible to simulate the dynamic implementation of the processes of power supply of train traction with an error of no more than 3.1–3.7% of the actual values.