Large Power Transformer Tank Deformation Finite Element Analysis

Many researchers have been done about the deformation of the transformer tank . Based on their papers, 3D tank model are presented in this paper refer to our own transformer design, and the simulation for vacuum test are provided. A program developed based on VB.net is also given, which can help us to do the parametric design for the transformer tank with different structure. This paper consists of four parts;At fist, summarize the current status of the analysis for the power transformer, collect the different simulation method for the force-analysis of the power transformer, and verify the importance to analyze the tank-deforming of the power transformer.Secondly, to create 3-D geometry model of Power Transformer Tank and to reduce the analysis time in ANSYS with the same effect, some parts are simplified in this geometry model.Thirdly, the FEM simulation of the transformer tank is carried based on ANSYS. Refer to the leads-design-system from the Brazil Transformer Company, a simulation are given based on ANSYS for tank-deforming, and a program based on APDL and VB.net is also finished to reduce the modeling time.In the last part, compare the simulation results with the test. Refer to our own design and vacuum-test in our workshop, we found that this simulation model can help us to find the non-uniform area of the transformer tank and help our designers to modify their design before the pre-production.