Closed-Form Approximation for Horizontal Grounding Electrodes Transient Analysis

[摘要] The method of moments (MoM) is widely used in several areas of knowledge to solve integral equations. In the specific case of solving electrical grounding transient behavior problems, the computational time is usually high. This paper presents new alternative solutions for solving the double integrals in the well-known hybrid electromagnetic model (HEM) applied to horizontal grounding electrodes. These new alternative solutions correspond to using an approximation to the exponential term appearing in the finite integral needed to obtain the parameters. Two approaches are considered either using Maclaurin series or Padé approximation. The corresponding results are compared with those obtained by using HEM with MoM. It is shown that the proposed solutions allow reducing the computational time, without jeopardizing accuracy.

[学科分类] 自动化工程

[关键词] Method of moments;Numerical methods;Grounding;Transient analysis