5.2 Parametric analysis using FEA model
The feasibility of the developed FEA model has been successfully validated, given the good agreement between the simulated results and the practical data. Further evaluations on the influence of different design modifications relating to the surge arrester’s
electric field intensity and discharge energy were then conducted using the FEA software. The parameters tested include the diameter and height of the ZnO blocks and the thickness and
dielectric constant of the insulation layer.