Test technology of UHV AC bushing and its application

For the urgent needs of the bushing test technology and inspection method with the rapid development of UHV transmission project, based on the technical requirements of the UHV transformer bushing and use for reference on the existing transformer bushing test technology, a complete set of UHV transformer bushing test system including insulation test, thermal rise test has been established, and also the relevant test methods has been proposed. The test technology proposed in this paper has been applied to the UHV transformer bushing used in the UHV power transmission engineering, meanwhile the validity of the test system and technology has been verified.