Simulation of Interwire Short Circuits in Transformer Windings by Means of Simulink MATLAB

The paper deals with simulation of transformer interwire faults in Simulink MATLAB. Transformer with short circuited wires was simulated as multiwinding transformer. Model was applied for analysis of transients in power transformer, such as interwire fault, transformer inrush, and fault in transformer connections. Simulation results were compared to experimental data, obtained with laboratory transformer, and showed satisfactory precision. Presented model allows calculation of transformer fault currents and analysis of other transients, such as inrush and overload.