A Novel Co-Phase Power Supply System for Electrified Railway Based on V Type Connection Traction Transformer

Power quality and neutral section are two technical problems that hinder the development of electrified railway to high-speed heavy railway. The co-phase power supply technology is one best ways solve these problems. At present, a V type connection traction transformer widely used in frequency single-phase AC system, especially In this paper, new system for based on proposed. One winding as main channel, three ports compensation ports. Neutral no longer set with substation, train continuously powered through. independent Static Var Generators (SVGs) compensate three-phase imbalance caused by load. When necessary, factor can be improved at same time. principle, structure, control strategy, capacity configuration scheme analyzed effectiveness verified using measured data advantage lies universal applicability transformer, flexibility SVG device.