Abstract
There are many factors that cause the aging of composite insulators, and the aging of the insulators will cause greater harm to the operation of the power grid and the quality of power consumption of users. This paper analyzes the mechanism of insulator aging caused by different factors, and uses optical microscope to study the microscopic morphology of insulators to determine the degree of insulator aging. The board-to-board partial discharge experimental device is used to further verify the accuracy of the calibration, and the partial discharge voltage is used as the characteristic quantity to judge the degree of aging. The results show that the partial discharge voltage changes with the aging degree of composite insulators, and presents a certain rule. This research provides a favorable reference for the aging calibration method of composite insulators.
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