Effect of earth grid conductor spacing on the safety criteria of substation earthing

S. D. Buba, W. F. Wan Ahmad, M. Z.A. Ab Kadir, C. Gomes, J. Jasni, Miszaina Osman

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Site dependent parameters such as soil resistivity, maximum grid current, fault duration, shock duration, surface layer material resistivity, and grid geometry have substantial impact on the design and performance of an earth grid. The grid geometry, i.e. the area occupied by the grid system, conductor spacing and the depth of burial of earth grid specifically have much impact on the mesh, step, touch voltage and earth potential rise, while parameters such as the conductor diameter and the thickness of the surfacing material have less impact on the safety criteria. In this paper, a distribution substation earth grid was designed using the CDEGS software by varying the spacing between grid conductors (compression ratio) from 1 to 0.5 in steps of 0.1. The safety criteria were studied under three scenarios, without surface layer material, with surface layer material of resistivity 3000Ω-m, and surface layer material of resistivity 5000Ω-m. Results indicated that the grid resistance and earth potential rise were lower for a compression ratio 0.9, while the step and touch voltages were found to be similar for each case of surface layer material.

Original languageEnglish
Title of host publicationConference Proceeding - 2014 IEEE International Conference on Power and Energy, PECon 2014
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages134-139
Number of pages6
ISBN (Electronic)9781479972975
DOIs
Publication statusPublished - 17 Mar 2014
Event2014 IEEE International Conference on Power and Energy, PECon 2014 - Kuching, Sarawak, Malaysia
Duration: 01 Dec 201403 Dec 2014

Other

Other2014 IEEE International Conference on Power and Energy, PECon 2014
CountryMalaysia
CityKuching, Sarawak
Period01/12/1403/12/14

Fingerprint

Electric grounding
Earth (planet)
Hard facing
Electric fault currents
Geometry
Electric potential
Soils

All Science Journal Classification (ASJC) codes

  • Fuel Technology
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

Cite this

Buba, S. D., Wan Ahmad, W. F., Ab Kadir, M. Z. A., Gomes, C., Jasni, J., & Osman, M. (2014). Effect of earth grid conductor spacing on the safety criteria of substation earthing. In Conference Proceeding - 2014 IEEE International Conference on Power and Energy, PECon 2014 (pp. 134-139). [7062428] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/PECON.2014.7062428
Buba, S. D. ; Wan Ahmad, W. F. ; Ab Kadir, M. Z.A. ; Gomes, C. ; Jasni, J. ; Osman, Miszaina. / Effect of earth grid conductor spacing on the safety criteria of substation earthing. Conference Proceeding - 2014 IEEE International Conference on Power and Energy, PECon 2014. Institute of Electrical and Electronics Engineers Inc., 2014. pp. 134-139
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Buba, SD, Wan Ahmad, WF, Ab Kadir, MZA, Gomes, C, Jasni, J & Osman, M 2014, Effect of earth grid conductor spacing on the safety criteria of substation earthing. in Conference Proceeding - 2014 IEEE International Conference on Power and Energy, PECon 2014., 7062428, Institute of Electrical and Electronics Engineers Inc., pp. 134-139, 2014 IEEE International Conference on Power and Energy, PECon 2014, Kuching, Sarawak, Malaysia, 01/12/14. https://doi.org/10.1109/PECON.2014.7062428

Effect of earth grid conductor spacing on the safety criteria of substation earthing. / Buba, S. D.; Wan Ahmad, W. F.; Ab Kadir, M. Z.A.; Gomes, C.; Jasni, J.; Osman, Miszaina.

Conference Proceeding - 2014 IEEE International Conference on Power and Energy, PECon 2014. Institute of Electrical and Electronics Engineers Inc., 2014. p. 134-139 7062428.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Buba SD, Wan Ahmad WF, Ab Kadir MZA, Gomes C, Jasni J, Osman M. Effect of earth grid conductor spacing on the safety criteria of substation earthing. In Conference Proceeding - 2014 IEEE International Conference on Power and Energy, PECon 2014. Institute of Electrical and Electronics Engineers Inc. 2014. p. 134-139. 7062428 https://doi.org/10.1109/PECON.2014.7062428