Effect of profile location on step and touch voltages of grounding grids

Author

Ghoneim, Sherif ; Hirsch, Holger ; Elmorshedy, Ahdab ; Amer, Rabah

Author_Institution

Inst. of Power Transm. & Storage (ETS), Univ. of Duisburg, Essen, Germany

Volume

1

fYear

2006

fDate

19-21 Dec. 2006

Firstpage

228

Lastpage

233

Abstract

A Boundary Element Approach is used to get the numerical computation of grounding system analysis such as the equivalent resistance and the distribution of potential on the earth surface due to fault currents. The results in this paper are produced by the techniques that have been implemented in a computer aided design (CAD) system for grounding grids of electrical substations. The paper investigates the effect of profile location on some parameters such as the value of the grid resistance, step and touch voltages, and also presents some cases of grid configurations with and without vertical rods to explain the variations of these parameters with the variations of profile location.

Keywords

boundary-elements methods; earthing; electric potential; fault currents; power grids; power system CAD; substations; Boundary element approach; computer aided design system; electrical substation; fault current; grounding grid; grounding system analysis; profile location effect; step voltage; touch voltage; Design automation; Earth; Electric resistance; Electrostatic precipitators; Fault currents; Grid computing; Grounding; Immune system; Surface resistance; Voltage; Boundary element approach; Grounding grids; Step voltage; Touch voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Systems Conference, 2006. MEPCON 2006. Eleventh International Middle East

Conference_Location

El-Minia

Print_ISBN

978-1-4244-5111-1

Type

conf

Filename

5372352