Influence of RTV Coating Thickness on Electric Field Intensity Values in the Vicinity of Overhead Transmission Line Conductors
The aim of the paper is to investigate the influence of the RTV silicon coating thickness on the electric field intensity values on the surface of high-voltage overhead transmission line conductors. For this study, the mathematical model based on the Charge Simulation Method (CSM) was used. The analysis are performed for the case of 400 kV overhead transmission line. The electric field intensity is calculated over the circumference and in the immediate vicinity of the conductors. The obtained results show that increasing the thickness of the RTV coating has a strong influence on reducing electric field intensity values on the conductor surface and in its immediate vicinity. Furthermore, increasing the thickness of the RTV coating decreases the electric field intensity gradient in the vicinity of the conductor and consequently decreases the probability of the stationary AC corona occurrence.