A COMPREHENSIVE STUDY ON PERFORMANCE OF YD TRANSFORMER IN AC ELECTRIFIED RAILWAY SYSTEMS

Abstract

The selection of appropriate traction transformers decreases power quality problems and critical impacts of Electrified Railway System (ERS) on the power grid. Using the Yd transformer in ERSs is not common and popular like the power systems. In this paper, the performance of Yd transformer in a Traction Power Substation (TPS) is investigated and its superiority against single-phase, V/V and Scott transformer is ascertained. The evaluation and analysis is based on electrical performance, power quality parameters and economics issues. The analysis is studied under unbalanced and balanced conditions considering Railway Power Quality Compensator (RPQC) as the auxiliary compensator is TPS. The simulation results validate correctness of theoretical analysis.