3D electric field analysis of a voltage transformer using boundary integral equation method and general-purpose cad system

The paper presents an application of indirect Boundary Integral Equation Method to the analysis of three-dimensional electric field of a voltage transformer. The employed mathematical model consists of Fredholm boundary integral equations of the first and second kind. The real geometry of the voltage transformer has been taken into account using parametric description. General-purpose CAD system has been used at pre- and post- processing level. Results have been obtained for the distribution of electric potential and the field intensity. The influence of additional high voltage shields has also been estimated.