Performance of high voltage bushings under polluted conditions

Abstract

Bushings are required for making transformer winding connections with the external circuit. Porcelain bushings are used upto 33 kV. The presence of a pollution layer on high voltage (h.v.) bushings is common in industrial and coastal regions. Flashover of bushings due to surface contamination is a major problem faced by power engineers. Because of these reasons, knowledge of Electric Field and Potential is important for its reliable performance in service. This paper presents the performance of h.v. bushings under polluted conditions. Integrated Engineering Software (IES) COULOMB, V8.0 has been used for carrying out the simulations. © Springer India 2015.