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Gas insulated switchgear (GIS) spacer is required to be of good electrical and mechanical properties to ensure high safety and reliability. The requirements are stricter for ultra high voltage (UHV) GIS spacer under higher voltage and pressure. In previous studies, the insulation characteristics of GIS epoxy spacer were investigated. But researches on the mechanical properties of the GIS spacer were...
Gas insulated metal enclosed line (GIL) has been widely applied in power transmission system due to its high safety and reliability level. Because of its cost saving production and excellent mechanical property, tri-post insulator is the key structure of insulation in GIL. Therefore, the safe operation of tri-post insulator determines the insulation strength level of GIL. Tri-post insulators have...
Ultra high voltage (UHV) AC Gas Insulated Switchgear (GIS) spacer is one of the most important components in GIS. In the process of long-term operation, partial discharge often occurs at the interface between the center conductor and epoxy resin (EP) basin body if this interface has some defects, and the discharge sometimes even leads to the crack of basin. It has become a bottleneck for the safe...
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