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Behaviour of backfill materials for electrical grounding systems under high voltage conditions

Lim, S. C. and Gomes, C. and Kadir, M. Z. A. A. and Nourirad, G. and Malek, Z. A. (2015) Behaviour of backfill materials for electrical grounding systems under high voltage conditions. Jourl Of Engineering Science And Technology, 10 (6). pp. 811-826. ISSN 1823-4690

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Official URL: http://jestec.taylors.edu.my/Vol%2010%20issue%206%...

Abstract

Backfill materials like Bentonite and cement are effective in loweringgrounding resistance of electrodes for a considerable period. During lightning,switching impulses and earth fault occurrences in medium and high voltagenetworks, the grounding system needs to handle extremely high currents eitherfor a short duration or prolonged period respectively. This paper investigatesthe behaviour of bentonite, cement and sand under impulse and alternating highvoltage (50Hz) conditions. Fulguritic;formation wasobserved in all materialsunder alternating high voltage. The findings revealthat performance ofgrounding systems under high voltage conditions maysignificantly changefrom the outcomes anticipated at design stage.

Item Type:Article
Subjects:A General Works
ID Code:57947
Deposited By: Haliza Zainal
Deposited On:04 Dec 2016 12:07
Last Modified:24 Aug 2017 08:17

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