Effect of earth grid conductor spacing on the safety criteria of substation earthing
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, conduc...
| Main Authors: | , , , , , |
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| Format: | Conference or Workshop Item |
| Language: | English |
| Published: |
IEEE
2014
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| Online Access: | http://psasir.upm.edu.my/id/eprint/39725/1/Effect%20of%20earth%20grid%20conductor%20spacing%20on%20the%20safety%20criteria%20of%20substation%20earthing.pdf |
| _version_ | 1796973596250210304 |
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| author | Buba, Sani Dahiru Wan Ahmad, Wan Fatinhamamah Ab Kadir, Mohd Zainal Abidin Gomes, Chandima Jasni, Jasronita Osman, Miszaina |
| author_facet | Buba, Sani Dahiru Wan Ahmad, Wan Fatinhamamah Ab Kadir, Mohd Zainal Abidin Gomes, Chandima Jasni, Jasronita Osman, Miszaina |
| author_sort | Buba, Sani Dahiru |
| collection | UPM |
| description | 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. |
| first_indexed | 2024-03-06T08:44:58Z |
| format | Conference or Workshop Item |
| id | upm.eprints-39725 |
| institution | Universiti Putra Malaysia |
| language | English |
| last_indexed | 2024-03-06T08:44:58Z |
| publishDate | 2014 |
| publisher | IEEE |
| record_format | dspace |
| spelling | upm.eprints-397252019-11-20T03:04:59Z http://psasir.upm.edu.my/id/eprint/39725/ Effect of earth grid conductor spacing on the safety criteria of substation earthing Buba, Sani Dahiru Wan Ahmad, Wan Fatinhamamah Ab Kadir, Mohd Zainal Abidin Gomes, Chandima Jasni, Jasronita Osman, Miszaina 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. IEEE 2014 Conference or Workshop Item PeerReviewed text en http://psasir.upm.edu.my/id/eprint/39725/1/Effect%20of%20earth%20grid%20conductor%20spacing%20on%20the%20safety%20criteria%20of%20substation%20earthing.pdf Buba, Sani Dahiru and Wan Ahmad, Wan Fatinhamamah and Ab Kadir, Mohd Zainal Abidin and Gomes, Chandima and Jasni, Jasronita and Osman, Miszaina (2014) Effect of earth grid conductor spacing on the safety criteria of substation earthing. In: 2014 IEEE International Conference on Power and Energy (PECon 2014), 1-3 Dec. 2014, Kuching, Sarawak, Malaysia. (pp. 134-139). 10.1109/PECON.2014.7062428 |
| spellingShingle | Buba, Sani Dahiru Wan Ahmad, Wan Fatinhamamah Ab Kadir, Mohd Zainal Abidin Gomes, Chandima Jasni, Jasronita Osman, Miszaina Effect of earth grid conductor spacing on the safety criteria of substation earthing |
| title | Effect of earth grid conductor spacing on the safety criteria of substation earthing |
| title_full | Effect of earth grid conductor spacing on the safety criteria of substation earthing |
| title_fullStr | Effect of earth grid conductor spacing on the safety criteria of substation earthing |
| title_full_unstemmed | Effect of earth grid conductor spacing on the safety criteria of substation earthing |
| title_short | Effect of earth grid conductor spacing on the safety criteria of substation earthing |
| title_sort | effect of earth grid conductor spacing on the safety criteria of substation earthing |
| url | http://psasir.upm.edu.my/id/eprint/39725/1/Effect%20of%20earth%20grid%20conductor%20spacing%20on%20the%20safety%20criteria%20of%20substation%20earthing.pdf |
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