Open AccessImproving the efficiency of the railway electric power system
Author(s) -
Т. Л. Алексеева,
Natalya Ryabchyonok,
L A Astrakhancev,
Nikolay Mihal'chuk,
В. А. Тихомиров
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1151/1/012005
Subject(s) - traction power network , traction substation , train , traction (geology) , automotive engineering , voltage , single phase electric power , electrical engineering , electricity , electric locomotive , direct current , efficient energy use , electric power , engineering , electric power system , traction motor , alternating current , power (physics) , power factor , transformer , mechanical engineering , physics , cartography , quantum mechanics , geography
The railway productivity can be increased by increasing the efficiency of the electric power system, the main elements of which are traction substations, overhead contact systems and electric locomotives. The paper analyzes the technical infrastructure of the electric power system of the railway and evaluates the energy efficiency of the equipment. To assess the energy efficiency of the system elements, the revised law of conservation of energy in the electromagnetic field, spectral analysis of electrical quantities and mathematical computer modeling of electromagnetic processes in the system are used. The proposed energy characteristics of the elements of the electric power system made it possible to determine the reasons that hinder the further development of the throughput and carrying capacity of the railway. In order to eliminate the negative impact of inductive resistance of the system elements on the energy indicators of the traction supply and the AC electric rolling stock, the feasibility of the use of high voltage DC electric traction has been proved. Through the complete and continuous use of the voltage of the electricity system for electric traction, it is possible to ensure movement in the intersubstation zone of three linked multiple trains instead of one and increase the speed of trains by 20%. Using high-voltage direct current, the efficiency of electric traction of trains can be in-creased by 7% compared to electric traction of trains using alternating current by reducing the current by 40% in the overhead contact system.