Impact of Activation Energy on Dielectric Insulation Power Factor

This study presents a research article examining the influence of activation energy on the power factor (PF) of dielectric insulation in power system apparatus. It discusses the dielectric frequency response, specifically how temperature and frequency affect insulation properties, governed by activation energy. The article details the significance of activation energy in estimating the power factor across various temperatures and frequencies, applying the Arrhenius equation for modeling. Empirical data from multiple case studies are included to substantiate the investigation. Key questions addressed in this article focus on how insulation type and aging impact activation energy and whether the Arrhenius equation remains valid for aged insulation. The investigation highlights existing methods of temperature correction for power factor measurements, noting potential inaccuracies when not accounting for activation energy. The findings aim to enhance understanding and application of temperature correction techniques within the industry, emphasizing accurate estimation of insulation performance under varying thermal conditions.