Computational Model for Transformer Bushing using Advanced Finite Element Method

Overheating in high-voltage equipment is detrimental to its reliability. Insulated equipment such as bushings plays a predominant role in transformer applications. In bushing, thermal characteristics are a key factor, and they act significantly in various conditions. During abnormal conditions, it experiences thermal stress due to dielectric loss, fault current, natural disasters, etc. This paper emphasizes the idea of designing the thermal model of porcelain bushing, analysing the temperature site, and then overcoming the negative impact of the HV bushing. Finding the bushing's maximum low temperature location and analyzing solutions to this issue are the papers goals. Stationary and time-dependent effects were studied using the advanced finite element method (AFEM). The proposed heat transfer model is examined at 11 kV, 273A in an 11 kV porcelain bushing. To the suggested thermal model's accuracy or predicted reading as well as the parameter responsible for the temperature increase are the problems of this work.