Zhuravlov A. The increasing operational reliability of track circuit working on proving ground of AC electric traction, that joins to splicing station

The object of study - the process of landfill operation of track circuits in conditions of constant traction current interference. The aim of the research is to improve the operational reliability of the railway automation and remote control system on AC traction polygon in conditions of DC traction currents interference of splicing station. The stated scientific problem was solved with the correct application of methods of mathematical modeling and simulation, statistical analysis, numerical methods, methods of digital signal processing. Scientific novelty: for the first time developed a mathematical model of DC traction currents and potentials propagation on the AC traction polygon and splicing station; improved mathematical model of the throttle-transformer DT-1-150, which allows for linear and nonlinear operation mode of the ferromagnetic core; improved method for increasing the operational reliability of track circuits, which allow to block DC traction currents interference of splicing station propagation in the direction of the AC section rail network via the protective power switching unit. The results are used in carrying out research work, in the educational process DNURT. Samples of protective power switching devices have been manufactured, the test have been passed in the research laboratory of the Department ATS DNURT and Pyatihatskiy signaling and communication department and have been transferred to the Odessa railway. The research results are intended for use on the railways.