Ebook: Электроснабжение железных дорог

The article presents the material concerning mainly AC railway power supply. Diagrams of connecting windings of transformers of 25 kV and 2x25 kV substations and connecting them to supply lines are given. Methods for calculating the traction network resistances for two - and three-wire traction networks are considered. For the first time in the educational literature, a method for calculating the current distribution in a three-wire 25+m kV power supply system, a special case of which is a 2x25 kV system, is described, as well as a method for calculating the resistances of a system with shielding and amplifying wires (ECU). Приведены материалы, относящиеся к режимам работы систем электроснабжения 25 кВ и 2x25 кВ с учетом уравнительного тока и к повышению эффективности их работы. Изложены принципы поэтапного развития системы тягового электроснабжения с учетом роста транспортных перевозок и способы адаптации системы электроснабжения к региональным условиям. It is intended for university students studying in the specialty 23.05.05 " Train traffic management systems "of the specialization " Railway power supply", and can also be useful for engineers and researchers involved in the development, design and operation of traction power supply devices.