Performance of backfill materials under impulse and AC testings
This paper focuses on the behaviour of dry sand, bentonite and cement under different voltage conditions. These three materials play important role in electrical grounding systems, in controlling ground impedance of an electrode. However, most often the low frequency earth resistance measurements of...
| Main Authors: | , , |
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| Format: | Conference or Workshop Item |
| Language: | English |
| Published: |
IEEE
2012
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| Online Access: | http://psasir.upm.edu.my/id/eprint/31962/1/31962.pdf |
| _version_ | 1796972040125677568 |
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| author | Mileo, Vanessa Carolina Laverde Ab Kadir, Mohd Zainal Abidin Gomes, Chandima |
| author_facet | Mileo, Vanessa Carolina Laverde Ab Kadir, Mohd Zainal Abidin Gomes, Chandima |
| author_sort | Mileo, Vanessa Carolina Laverde |
| collection | UPM |
| description | This paper focuses on the behaviour of dry sand, bentonite and cement under different voltage conditions. These three materials play important role in electrical grounding systems, in controlling ground impedance of an electrode. However, most often the low frequency earth resistance measurements of grounding electrodes encased in these materials have been considered as the performance indicator. It has been found in this study that the behaviour of materials grossly depends on the applied voltage waveform and repetition of application or duration of the waveform. Time to breakdown in the case of bentonite is considerably smaller than that of cement. Bentonite also shows breakdown in two phases, in the voltage time curve. In cases of both bentonite and dry sand, fulgurites were formed in the application of short duration alternative voltage at 50 Hz. As fulgurites are very high in resistance compared to the original material, the overall resistive and inductive behaviours of the earth electrodes may change in the presence of leakage currents in MV and HV systems. |
| first_indexed | 2024-03-06T08:21:59Z |
| format | Conference or Workshop Item |
| id | upm.eprints-31962 |
| institution | Universiti Putra Malaysia |
| language | English |
| last_indexed | 2024-03-06T08:21:59Z |
| publishDate | 2012 |
| publisher | IEEE |
| record_format | dspace |
| spelling | upm.eprints-319622019-11-21T08:00:54Z http://psasir.upm.edu.my/id/eprint/31962/ Performance of backfill materials under impulse and AC testings Mileo, Vanessa Carolina Laverde Ab Kadir, Mohd Zainal Abidin Gomes, Chandima This paper focuses on the behaviour of dry sand, bentonite and cement under different voltage conditions. These three materials play important role in electrical grounding systems, in controlling ground impedance of an electrode. However, most often the low frequency earth resistance measurements of grounding electrodes encased in these materials have been considered as the performance indicator. It has been found in this study that the behaviour of materials grossly depends on the applied voltage waveform and repetition of application or duration of the waveform. Time to breakdown in the case of bentonite is considerably smaller than that of cement. Bentonite also shows breakdown in two phases, in the voltage time curve. In cases of both bentonite and dry sand, fulgurites were formed in the application of short duration alternative voltage at 50 Hz. As fulgurites are very high in resistance compared to the original material, the overall resistive and inductive behaviours of the earth electrodes may change in the presence of leakage currents in MV and HV systems. IEEE 2012 Conference or Workshop Item PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/31962/1/31962.pdf Mileo, Vanessa Carolina Laverde and Ab Kadir, Mohd Zainal Abidin and Gomes, Chandima (2012) Performance of backfill materials under impulse and AC testings. In: International Conference on Lightning Protection (ICLP), 2-7 Sept. 2012, Vienna, Austria. . 10.1109/ICLP.2012.6344278 |
| spellingShingle | Mileo, Vanessa Carolina Laverde Ab Kadir, Mohd Zainal Abidin Gomes, Chandima Performance of backfill materials under impulse and AC testings |
| title | Performance of backfill materials under impulse and AC testings |
| title_full | Performance of backfill materials under impulse and AC testings |
| title_fullStr | Performance of backfill materials under impulse and AC testings |
| title_full_unstemmed | Performance of backfill materials under impulse and AC testings |
| title_short | Performance of backfill materials under impulse and AC testings |
| title_sort | performance of backfill materials under impulse and ac testings |
| url | http://psasir.upm.edu.my/id/eprint/31962/1/31962.pdf |
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