SYSTEM traction power supply section of the railway AC

摘要

The proposed utility model relates to the field of electrical and electric power, in particular for high-voltage power supply systems of high-speed railways AC expensive and can be used to power leveling for tire traction substations of railway electrified with AC current of 50 Hz and a voltage of 2 × 25 kV feeding Scott transformer to provide a major advantage Scott circuit - the ability of balancing currents in a three phase system. traction current railway section AC system, consisting of three phase-two phase transformers, the primary windings are connected in a Scott, and the secondary winding are insulated from each other, a longitudinal power supply wire of each feed zone is isolated from the longitudinal wire adjacent feeder bands and connected ends to the first terminals of the secondary windings of three phase-two phase traction transformer neighboring substations with the same transformation ratio, the second terminals of which are connected to contac tnoj network of the same feeder zone. The system introduced power leveling unit which comprises a capacitor coupled to the matching transformer by thyristor bridges, the power equalizing unit is connected to the secondary windings of transformer based converter circuits Scott. The objective of the proposed utility model is to provide symmetry in the three-phase mains supply lines with any uneven loads traction shoulders.