Razgonov S. Improving the reliability of rail circuits under the interferences influence of traction current under the instability of power supply

The object of research is the process of track circuits in significant fluctuations in voltage and increase their immunity when the asymmetry of the rail line and the effect of switching processes in the traction power supply. The study aims to increase the reliability of track circuits in the presence of high voltage oscillations of the primary sources of nutrition and increase noise immunity and tone of the station phase-sensitive track circuits with asymmetry of the rail line and the effect of switching processes in the electric power circuit. To solve the problems in the thesis are applied: мethods of mathematical modeling of linear and nonlinear differential equations, analysis and synthesis of electric track circuits, probability theory, full-scale modeling, numerical methods, location, and laboratory and operational tests of the proposed and synthesized the means and methods. For the first time a method for improving the reliability of the station and phase-sensitive tonal track circuits in ice, loaded with electric entry into the zone of neutral inserts, including electric power to the network, etc., by reducing the asymmetry coefficient of rail lines for DC to the level required by the symmetry of the blocks. The scientific results obtained in the dissertation, as well as the developed models and methods can be used to solve the problem of electromagnetic compatibility "track circuit - power train" in icy conditions by balancing the asymmetry of the DC with the help of balancing blocks, as well as with application of the proposed stabilizing noiseless power supply.