Comprehending how the electric field is distributed within and around high-voltage equipment is pivotal for designing, operating, and ensuring the efficacy of high-voltage insulators. The objective of this study is to investigate the dielectric strength of the point-barrier-plane system under alternating voltage. For this purpose, the potential and electric field distribution for both configurations (with and without barrier) are studied using a numerical method. Our study employs 2D electrostatic simulations using the finite element method (FEM) to numerically analyze the impact of a dielectric barrier on the distributions of electric field and potential in a vertically arranged point-plane gap. The obtained results are in good agreement.

point-plane geometry, dielectric barriers, electric field analysis, finite element method.