Abstract:

In order to ensure the electrical equipments in Shazhou 750 kV substation to be insulated totally with composite material, the key technologies of the composite insulating materials adopted in 750 kV substation was researched, including the technologies of improving the sand resistant and ultraviolet resistant performance of composite insulating materials, the molding technology of elasticity modulus of epoxy resin insulating material, and the development technologies of 750 kV main transformer, HP reactor bushing, 750 kV disconnector with composite post, 72.5 kV circuit breaker with composite column and so on. The successful accomplishment of these key technologies is significant to the safety and reliability of first application of composite insulating material in 750 kV substations.

Key words: 750 kV substation, composite insulating materials, high temperature vulcanized silicone rubber, sand resistant, ultraviolet resistant