Way to transfer part of the railway was electrified with direct current of 3.3 kW at a variable single phase 27.5 kV AND DEVICE FOR IMPLEMENTATION

摘要

1. A method for translation rail sections electrified at a constant current of 3.3 kV, a variable phase current of 27.5 kV, comprising a preliminary straightening phase alternating current, and its subsequent conversion via auxiliary inverter voltage in single phase alternating current to supply the electric rolling stock characterized in that for rectifying three-phase alternating current using existing infrastructure dc substations, from the primary inputs to the supply voltage and the tire n tinuous current 3.3 kV vklyuchitelno.2. The apparatus according to claim 1, consisting of a step-down transformer, the secondary windings of the converter are fed aggregates formed converter transformers and rectifiers; Tire 3.3kV; autonomous voltage inverter connected to the busbars 3.3 kV, the outputs of which the amplitude with AC voltage of 3.3 kV is connected to a single-phase step-up transformer, characterized in that as a step-down transformer and converter units are used aggregates existing transformers and traction substations DC and single-phase transformers to increase outputs of the inverters configured secondary windings on the voltage of 27.5 kV and attached directly to the busbars further cm ontirovannogo RU-27.5 kV, from which through the feeder breakers of 27.5 kV feed former portions catenary DC isolation which previously raised to a level corresponding to the voltage of 27.5 kV AC.