Abstract
Ensuring the fire safety of high voltage (HV) outdoor insulators is key to maintain the reliable operation of the electrical grid. This requires the careful selection of suitable polymeric composite materials with excellent electrical tracking, erosion, and fire resistance characteristics. To improve their performance against electrical tracking and potential combustion issues, inorganic additives are commonly integrated into these materials. The focus of this review article is on describing the progress and innovations in enhancing the electrical tracking, erosion, and fire performance of polymeric materials by incorporating inorganic additives. The main objective is to explore the development of these materials and showcase their evaluation through laboratory testing. This study highlights significant state-of-the-art advancements in the field, providing valuable insights into its current progress. Additionally, the research outlines prospects, offering a peek at how upcoming studies are expected to further advance the scientific knowledge in the field. By disseminating critical information about the development, testing, and future potential of polymeric materials containing inorganic additives, this work is expected to facilitate researchers in advancing their work in HV outdoor insulation, leading to more efficient electrical insulation solutions for safer and reliable electrical grids.
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