Research on simulation of V / V connection transformer power quality

It is of significance for the research on traction power supply system power quality and the analysis on its impact on the grid to simulation of V / V traction transformer simulation. Based on this, a typical unbalance V / V traction transformer model and load model electric locomotives are created in PSCAD / EMTDC, SS9 electric locomotive is used when simulation. V/V traction transformer with the conditions of the electric locomotive traction load is simulated and electric locomotive load current harmonics and power quality PCC connection point properties are analyzed. Simulation results show that the proposed mode is effective.