Mechanical forces and magnetic field simulation of transformer with finite element method

The ability to resist short-circuit power and the design of transformer have been receiving all the attention. Transformer Industry standard has asked the transformer should be able to withstand the damage that caused by the short circuit for years.These requirements is essential to avoid the unbearable loss that caused by system failures Calculation of the Large magnetic flux leakage and short circuit forces is very important in power transformer design.The main goal in this paper is accomplished by using 2-D axisymmetric models utilizing the finite element methods. The flux leakage not only cause the additional loss,but also create heating and force to the internal components of transformer,all this cause very damage to the transformer,so we analysised the leakage magnetic field and the force of transformer that under short-circuit state, to determine how to ensure the dynamic stability of the transformer.