Investigation of the Space Charge Dynamic in the Nanocomposite BaTiO₃ -Doped XLPE

Understanding space charge dynamics in cross-linked polyethylene (XLPE) is crucial for optimizing electrical insulation systems, preventing insulation failure, and ensuring the reliable performance of electrical equipment. Research is focused on advanced characterization techniques and predictive models to mitigate space charge effects, which are key factors in the aging and degradation of high-voltage polymer insulators. While experimental measurements are common, theoretical models are less so. This paper investigates the dynamics of space charges in barium titanate (BaTiO₃)-doped XLPE nanocomposites under a continuous electric field using the bipolar charge transport model. The results show that doping with BaTiO₃ significantly improves the dielectric properties of XLPE. The study presents and discusses the evolution of the electric field and charge density over time for different types of charges.