Author(s)

B. Techaumnat, S. Hamada, T. Takuma and T. Kawamoto

Abstract

Optimization of an insulating support in three dimensional gas insulated systems B. Techaumnat*, S. Hamada*, T. Takuma* and T. Kawamoto- ^Kybto University, Japan ^•Central Research Institute of Electric Power Industry, Japan Abstract Gas insulated systems are widely used nowadays in electric power industry. Practically, solid dielectrics are inevitably required to provide support and separation of a stressed conductor in the systems. The presence of solid dielectrics, called "spacers", results in complex-dielectric field distributions, which cannot be usually analytically calculated. This paper describes the optimization of a post-type spacer in a gas insulated bus-bar or a transmission line, which contributes a three- dimensional system. We have applied the boundary element method (BEM) for the electric field calculation. As spacers have rounded shapes, calcula- tion models are constructed by second-order isoparametric curved elements. The Marquardt method is an optimizatio

Keywords