Time domain analysis of grounding electrodes impulse response

Author

Lorentzou, M.I. ; Hatziargyriou, N.D. ; Papadias, B.C.

Author_Institution

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

Volume

18

Issue

2

fYear

2003

fDate

4/1/2003 12:00:00 AM

Firstpage

517

Lastpage

524

Abstract

Lightning protection studies require estimation of grounding systems dynamic behavior. This paper presents the results of a new methodology for calculating the lightning response of the basic component of any grounding system, the grounding electrode. Lightning strike is modeled using a double exponential time function. Closed-form mathematical formulae are used to describe current and voltage distribution along the electrode. The effect of soil ionization can be also taken into account. The proposed methodology is validated by comparison of the obtained results with experimental and simulated waveforms found in literature.

Keywords

current distribution; earth electrodes; lightning protection; power system protection; time-domain analysis; voltage distribution; closed-form mathematical formulae; current distribution; double exponential time function; dynamic behavior; grounding electrodes impulse response; grounding systems; lightning response; power system lightning protection; soil ionization; time domain analysis; voltage distribution; Electrodes; Equations; Frequency; Grounding; Lightning; Power system transients; Time domain analysis; Transient analysis; Transmission lines; Voltage;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/TPWRD.2003.809686

Filename

1193872