Transient impedance of grounding rods

Author

Gonos, I.F. ; Topalis, F.V. ; Stathopulos, I.A.

Author_Institution

Dept. of Electr. & Comput. Eng., Nat. Tech. Univ. of Athens, Greece

Volume

2

fYear

1999

fDate

1999

Firstpage

272

Abstract

The aim of this paper is the correlation of the transient impedance and its parameters with the stationary resistance of simple grounding systems. Impulse current tests of the standard form 8/20 μs were performed on several types of equilateral triangles and single driven rods of different lengths. The injected current in the grounding system and the developed potential were recorded, resulting in the determination of the time variation of the transient impedance. Further mathematical analysis of the experimental results led to simple linear relations between the parameter of transient impedance and the stationary resistance. The results provide useful information for the design of a grounding system and the measures for the protection of installations from lightning strokes

Keywords

power system protection; developed potential; equilateral triangles; grounding rods; grounding system design; injected current; installation protection; linear relations; mathematical analysis; power system lightning protection; single driven rods; stationary resistance; transient impedance;

fLanguage

English

Publisher

iet

Conference_Titel

High Voltage Engineering, 1999. Eleventh International Symposium on (Conf. Publ. No. 467)

Conference_Location

London

ISSN

0537-9989

Print_ISBN

0-85296-719-5

Type

conf

DOI

10.1049/cp:19990646

Filename

817308