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Optimization specificities of electric propulsion power supply subsystem on railway transport

Objective: To assess the basic factors, innovative technologies, on the basis of which an integrated network of electriﬁed lines of high-speed rail is to be created in Russia. Methods: Optimization of the traction power supply system according to characteristic criteria of resources and energy efﬁciency minimization. Results: Quality indices of power supply of hauling operations, voltage level of collectors for different electric propulsion systems with direct and single-phase alternating current were analyzed. The key factors, signiﬁcantly inﬂuencing the performance indices, are the voltage level and type of current of an electric powered network. It was shown that the system of electric propulsion is a promissory system and possesses the best competitiveness indices, as its electric power supply subsystem is functioning on high-voltage direct current with the use of a 24 kW direct current electric stock on the basis of a new multipurpose generation converting complex. Practical importance: The suggested justiﬁcation method of electriﬁcation variant by means of a dependence diagram depicting spacing between substations and catenary wire section makes it possible to justify a competitive high-voltage direct current electric propulsion system during the design of electric power infrastructure for busy railway lines.