This paper introduces the application of software ANSYS with finite element method(FEM)to analyze the electromagnetic process of 2D transformer with single winding and 3D transformer with double winding. The forces of each pie and turn are analyzed fully under conditions of no load
normal and short circuit. Under the condition of short circuit there exists pushing
pressing
suspending and vibrating between pies or turns of windings
so the whole winding may damaged finally. Therefore
the analysed results by ANSYS can give a theoretical reference to fault diagnosis of power transformer.