Soil ionization in different types of grounding grids simulated by FDTD method

Author

Santos, Thais L T dos ; De Oliveira, Rodrigo M S ; Sobrinho, Carlos Leônidas da S S ; Almeida, José F.

Author_Institution

Eletrical & Comput. Eng. Dept., Fed. Univ. of Para, Belem, Brazil

fYear

2009

Firstpage

127

Lastpage

132

Abstract

The main goal of this work is to analyze the soil ionization effects in different types of grounding grids. The analysis was performed by implementing a software based on the FDTD method, for modeling the non-linear behavior of the ground due the application of high intensity lightning currents. Step voltages on the soil surface were calculated from the border of the grounding grid to a point 1 m away from it. The ionization influence is determined by comparing the results to data obtained by modeling linear ground. The obtained results are physically consistent.

Keywords

earthing; finite difference time-domain analysis; ionisation; lightning protection; power engineering computing; soil; FDTD method; finite difference time-domain analysis; grounding grids; lightning currents; nonlinear behavior; soil ionization; soil surface; Computational modeling; Electrodes; Finite difference methods; Grounding; Ionization; Lightning; Power system transients; Soil; Transient analysis; Voltage; FDTD method; Soil Ionization; grounding grids; step voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave and Optoelectronics Conference (IMOC), 2009 SBMO/IEEE MTT-S International

Conference_Location

Belem

ISSN

1679-4389

Print_ISBN

978-1-4244-5356-6

Electronic_ISBN

1679-4389

Type

conf

DOI

10.1109/IMOC.2009.5427615

Filename

5427615