Energy Efficiency Electrified Section with Automatic Voltage Regulation

The paper considers an increase in carrier and traffic capacity of sections (lines) by means of improving 3 kV DC traction power supply system As a method of improvement the authors propose a system of contactless automatic voltage regulation with the application of various regulators: reactor voltage regulation, thyristor-reactor and thyristor. The paper presents simulation of the 3 kV DC traction power supply system with the use of KORTES program (complex for calculating traction power supply) that was developed by the JSC "VNIIZhT" (Railway Research Institute) and that is being used in the JSC "Russian Railways". The authors used for calculation a real railway section of the Sverdlovsk Railway with a heavy gradient and a locomotive 2ES10 in case of passing single freight train with increased weight. During calculation a developed clarifying method with the use of corrective current coefficients was applied. Based on the simulation results, the authors carried out the study of technical and energy indicators of the traction power supply system that allowed assessing the carrier and traffic capacity of sections (lines). The results obtained proved the efficiency of a thyristor switching device in comparison to a reactor and a thyristor-reactor switching devices.