Comparison of circuit models for the simulation of soil ionization

Author

Nicolopoulou, E.P. ; Asimakopoulou, F.E. ; Gonos, I.F. ; Stathopulos, I.A.

Author_Institution

High Voltage Lab., Nat. Tech. Univ. of Athens, Athens, Greece

fYear

2012

fDate

2-7 Sept. 2012

Firstpage

1

Lastpage

6

Abstract

The main characteristic of the transient behaviour of a grounding system is the decrease of the soil resistivity and consequently of the grounding impedance, due to soil ionization phenomena that take place, when the density of the injected current exceeds a critical value. In this paper two circuit models proposed by researchers have been implemented using the ATP/EMTP programme in order to simulate the transient response of a grounding system taking soil ionization into account. The simulation results are compared to measurements received by imposing impulse voltages on soil samples. The accuracy of each model is evaluated according to the level of proximity to the oscillogramms and conclusions are drawn about the effectiveness of each modeling approach.

Keywords

earthing; integrated circuit modelling; ionisation; soil; transient response; ATP/EMTP programme; circuit models; grounding impedance; grounding system; impulse voltages; oscillogramms; proximity; soil ionization; soil resistivity; soil samples; transient behaviour; transient response; Current measurement; Density measurement; EMTP; Grounding; Ionization; Semiconductor process modeling; Soil measurements; equivalent circuit; simulation; soil ionization; transient response;

fLanguage

English

Publisher

ieee

Conference_Titel

Lightning Protection (ICLP), 2012 International Conference on

Conference_Location

Vienna

Print_ISBN

978-1-4673-1898-3

Electronic_ISBN

978-1-4673-1896-9

Type

conf

DOI

10.1109/ICLP.2012.6344371

Filename

6344371