Title :
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
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;
Conference_Titel :
Microwave and Optoelectronics Conference (IMOC), 2009 SBMO/IEEE MTT-S International
Conference_Location :
Belem
Print_ISBN :
978-1-4244-5356-6
Electronic_ISBN :
1679-4389
DOI :
10.1109/IMOC.2009.5427615
