Simulation Research of Impedance-Matched Balancing Transformer Based on PSCAD

The connection of IMBT(impedance-matched balancing transformer) and inner impedance-matching were studied.With analyzing the relationship of electromagnetic coupling of multi-winding transformer,a traction power supply system model of electric railway was built based on the UMEC(unified magnetic equivalent circuit) transformer model of EMTDC.Simulation and analysis were carried out under normal condition,faulty condition,magnetizing inrush condition.The simulation results prove that the above model is correct and makes guidance meaning for site operation of IMBT.