DocumentCode :
1150602
Title :
Resistance formulas of grounding systems in two-layer earth
Author :
Chow, Y.L. ; Elsherbiny, M.M. ; Salama, M.M.A.
Author_Institution :
Dept. of Electr. & Comput. Eng., Waterloo Univ., Ont., Canada
Volume :
11
Issue :
3
fYear :
1996
fDate :
7/1/1996 12:00:00 AM
Firstpage :
1330
Lastpage :
1336
Abstract :
This paper lists, under one umbrella, the resistance formulae of power network grounding systems, namely: the buried grid; the driven rodbed; and the combination of the buried grid and rodbed. The formulae are synthesized from rigorous asymptotes; as a result, they are accurate (averaged error ≈5%) and do not require empirical tables or graphs. The validity of these formulae is verified in this paper, not by their derivations, since they are too lengthy, but by checking numerically, against the results of detailed-numerical methods and analytically, against asymptotes. The formulae are suitable for calculation with a handheld calculator, and therefore they are useful tools for an engineer in the field
Keywords :
earthing; electric resistance; numerical analysis; power system protection; buried grid; driven rodbed; handheld calculator; numerical methods; power network grounding systems; resistance formulae; rigorous asymptotes; two-layer earth; Capacitance; Conductivity; Data mining; Earth; Electric resistance; Grid computing; Grounding; Moment methods; Reflection; Surface resistance;
fLanguage :
English
Journal_Title :
Power Delivery, IEEE Transactions on
Publisher :
ieee
ISSN :
0885-8977
Type :
jour
DOI :
10.1109/61.517487
Filename :
517487
Link To Document :
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