Structure Design of UHVDC Pure SF6 Insulated Bushing

Abstract

This paper does research on a new bushing structure as a solution to the shortcomings of the traditional transformer bushing structures. Oil-paper bushing has risk of oil leakage, explosion and combustion. Epoxy resin impregnated paper (RIP) composite bushing has the disadvantages of high cost, complex structure, complex process and difficult heat dissipation. Pure SF6 insulated bushings don't have the above problems and have the advantage of simple structure, low cost, easy mass production and maintenance in the later time.