Influence of transverse electric fields on electrical tree initiation in solid insulation

The study of tree growth in solid insulation is important to reveal many aspects in order to develop the way of its suppression. The additives are one of the main aims to do this also good manufacture of solid insulation material without impurities are also another way. This paper introduces new method to study the influence of transverse electric field on electrical tree initiation in solid insulation. A new model is introduced for investigating the effect of transverse fields on the morphology of electrical tree by using needle-to-plane gap for tree initiation and plane-to-plane gap for field transverse. Only the needle is embedded in the insulation medium. Then, accurate computation of the electric field is a pre-requisite for calculating the electric field distribution by using the finite element methods.