An advanced computer model for grounding system analysis

Author

Melipoulos, A.P.S. ; Xia, Feng ; Joy, E.B. ; Cokkinides, G.J.

Author_Institution

Sch. of Electr. Eng., Georgia Inst. of Technol., Atlanta, GA, USA

Volume

8

Issue

1

fYear

1993

fDate

1/1/1993 12:00:00 AM

Firstpage

13

Lastpage

23

Abstract

An advanced methodology and a computer model for analysis of practical grounding systems based on the method of moments are presented. The practical methodology is applicable to both simple and complex grounding systems. The grounding system may consist of cylindrical conductors as well as rectangular earth conductors or metallic surfaces buried in earth or located on the surface of the earth. The method consists of computing an equivalent circuit model of the earth embedded electrodes and conductive soil. Uniform or two-layer soil can he accommodated. The problem of computational efficiency is addressed. Several innovations have been introduced to minimize execution time, including adaptive segmentation of grounding structures and adaptive computation of self and mutual impedances. The procedure enables accurate computation of touch and step voltages, body currents, grounding system impedance, voltage profile, etc. The method and computer program have been validated with actual system measurements

Keywords

earth electrodes; earthing; power engineering computing; advanced computer model; body currents; conductive soil; cylindrical conductors; earth embedded electrodes; equivalent circuit model; grounding system analysis; metallic surfaces; mutual impedances; rectangular earth conductors; self impedances; step voltages; touch voltages; voltage profile; Conductors; Earth; Electrodes; Embedded computing; Equivalent circuits; Grounding; Impedance; Moment methods; Soil; Voltage;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/61.180314

Filename

180314