Analysis of the Electric Field in Porcelain Pin-Type Insulators via Finite Elements Software

In the electrical distribution system, the insulating components may have their characteristics compromised by several reasons such as contamination, cracks caused by vandalism, nest of birds, among others. The influence that each type of variation can cause on its insulation capacity is difficult to determine and must be specifically studied. This article has as objective the evaluation through simulation of the electrical field distribution on the surface of insulators, considering the ambient conditions to which such components are subjected. The finite element software will be used to evaluate the degree of changes due to such conditions in the distribution of the electric field on the surface of insulators. This evaluation shows that the conductive surface significantly reduces the distance from the electric potential to the ground, which makes this condition favorable for electric discharges and therefore must be controlled.

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