Abstract
In this work, a method is proposed for the calculation of the electromagnetic field radiated by a grounding system in a semi-infinite dissipative medium subjected to a current excitation generated by the lightning strike. The assessment of the induced current distribution on the grounding system due to a transient excitation is obtained by solving Pocklington’s equation using the method of moments. A new method for the calculation of the transient electromagnetic field following the injection of a lightning current or short circuit is also developed. This method is based on the concept of the hertzian dipoles and the asymptotic expansion of a single dipole. A MATLAB computer program has been developed for the determination of the induced currents. The program is validated by comparing its results with those obtained with the commercial software NEC 4.
| Original language | British English |
|---|---|
| Article number | 1410986 |
| Journal | Cogent Engineering |
| Volume | 4 |
| Issue number | 1 |
| DOIs | |
| State | Published - 1 Jan 2017 |
Keywords
- electromagnetic field
- grounding
- Hertzian dipole
- lightning
- NEC4
- Sommerfeld integrals
- transient