DocumentCode
1032323
Title
Evaluation of ground resistance of a grounding grid of any shape
Author
Thapar, Baldev ; Gerez, Victor ; Balakrishnan, Arun ; Blank, Donald A.
Author_Institution
Montana State Univ., Bozeman, MT, USA
Volume
6
Issue
2
fYear
1991
fDate
4/1/1991 12:00:00 AM
Firstpage
640
Lastpage
647
Abstract
A large number of grounding grids in substations have shapes other than a square or a rectangle, whereas the formulas and graphs for the ground resistance of a grounding grid available in the literature are applicable only to nearly square or rectangular grids. A new simple equation for the estimation of ground resistance applicable to any practical shape of the grid is presented. The results obtained with this equation have been compared with accurate results obtained via computer and with the results of analog model tests. The value of ground resistance obtained with the proposed method closely approximates that obtained from elaborate and time-consuming computer methods
Keywords
earth electrodes; electrical conductivity; substations; analog model tests; ground resistance; grounding grid; power engineering computing; substations; Analog computers; Computer errors; Conductors; Equations; Finite element methods; Grounding; Senior members; Shape; Substations; Testing;
fLanguage
English
Journal_Title
Power Delivery, IEEE Transactions on
Publisher
ieee
ISSN
0885-8977
Type
jour
DOI
10.1109/61.131122
Filename
131122
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