#6642. Space charge dynamics in epoxy resin under voltage polarity reversal at various temperatures

December 2026publication date
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Journal’s subject area:
Electrical and Electronic Engineering;
Energy Engineering and Power Technology;
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Abstract:
Epoxy resin has been used to cast the core of the dry-type high voltage direct current bushings and can accumulate space charge under high electric fields at high temperatures, which is believed to be a potential threat to the safe operation of dry bushings, especially under polarity reversal. In this study, results of a study of the evolution of space charge and electric field distribution in epoxy resin, under polarity reversal at 10 and 20 kV/mm, and at temperatures between 40 and 100°C, are presented.
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