Computation of electric field of 100kV FGM spacer for gas insulated bus duct applications

In this paper application of functionally gradient material (FGM) for optimized design of single phase gas insulated bus duct. Modeling of cone spacer in SF₆ gas insulated substation (GIS) bus duct and extensive electrostatic field stress distribution analyses using Finite Element Method (FEM) is illustrated in this paper. A unique feature of this design is the simulation of electric field distribution on cone insulator with varying relative permittivity ε_r for supporting high voltage bus duct. The electric field distribution over homogeneous insulator and FGM insulator with optimized relative permittivity distribution is explored with analyses results.