Analysis and Research on Influence of Temperature on Dielectric Loss of Epoxy Impregnated Paper Capacitive Bushings

In this paper, the relationship between the dielectric loss factor tan
$\delta$
and the ambient temperature is studied through the analysis of the test data of the epoxy resin-impregnated paper capacitive bushing of the main transformer of a nuclear power plant, and the effect of temperature on the epoxy resin-impregnated capacitive bushing is discussed. The influence mechanism of dielectric loss provides a technical reference for the comprehensive evaluation of the routine test results of epoxy resin-impregnated paper capacitive bushings in cold environments.