Study on Advancements in Dielectric Testing in High Voltage Applications and Assessment of Effects of Ageing on Dielectric Properties

The reliability of a power system relies heavily on the performance of insulation or dielectric materials used in various equipment like power cables, transformers, generators, switch gears, capacitors, reactors, and arresters. However, dielectrics can degrade over time due to various factors, including electrical stress, temperature, humidity, and other environmental conditions. The degradation or failure of insulation can lead to equipment malfunction, power outages, or even a catastrophic failure. Therefore, a periodic assessment and monitoring of insulation health and integrity through proper dielectric testing mechanisms serves as an essential tool for the safe and sustainable operation of an electrical power system. This paper also addresses the development of aging models and predictive tools for assessing the remaining life of dielectric materials in high-voltage applications, valuable insights into the long-term performance and reliability of dielectrics, enabling improved maintenance strategies and design guidelines for high-voltage systems.