Abstract
A Fredholm integral equation of the first kind has been developed for finding the charge distribution on a circular conducting plate buried in a homogeneous earth. The method of moments is used to solve the functional equations. Techniques have been developed to evaluate and differentiate a singular integral by numerical means. An extremely fast rate of convergence has been obtained by expanding the charge distribution in functions with an appropriate singularity. It is observed that currents are dispersed into the earth in a small region near the edge of the disk. It is noted that, contrary to popular perceptions, the earthing resistance of a disk is not inversely proportional to its area. A simple empirical formula for evaluating the earthing resistance of a disk in terms of its radius, its depth of burial, and the conductivity of the earth is derived.
| Original language | English |
|---|---|
| Pages (from-to) | 872-877 |
| Number of pages | 6 |
| Journal | IEEE International Symposium on Electromagnetic Compatibility |
| Issue number | pt 2 |
| Publication status | Published - 1 Dec 1989 |
| Event | 1989 International Symposium on Electromagnetic Compatibility - EMC'89 - Nagoya, Japan Duration: 8 Sept 1989 → 10 Sept 1989 |
ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Condensed Matter Physics