Geometry optimization of electric shielding in power transformers based on finite element method

In this article, a finite element model, suitable for power transformer representation, is used for the evaluation of transformer characteristics and their modification due to the introduction of electric shielding, focusing on the short-circuit impedance calculation. The use of deterministic optimization methods, in conjunction with the finite element model enables the optimization of the transformer shielding geometrical configuration, with respect to its cost and efficiency.