BEHAVIOUR OF BACKFILL MATERIALS FOR ELECTRICAL GROUNDING SYSTEMS UNDER HIGH VOLTAGE CONDITIONS

被引：0
|
作者：
Lim, S. C. [1 ]
Gomes, C. [2 ]
Kadir, M. Z. A. A. [2 ]
Nourirad, G. [2 ]
Malek, Z. A. [3 ]
机构：
[1] Taylors Univ, Sch Engn, Taylors Lakeside Campus,1 Jalan Taylors, Subang Jaya 47500, Selangor De, Malaysia
[2] Univ Putra Malaysia, Ctr Excellence Lightning Protect, Dept Elect & Elect Engn, Serdang, Malaysia
[3] UTM, Inst High Voltage & High Current IVAT, Johor Baharu, Malaysia
来源：
JOURNAL OF ENGINEERING SCIENCE AND TECHNOLOGY | 2015年 / 10卷 / 06期
关键词：
Grounding; Backfill materials; Bentonite; High voltage experiment; resistance; Fulgurites;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Backfill materials like Bentonite and cement are effective in lowering grounding resistance of electrodes for a considerable period. During lightning, switching impulses and earth fault occurrences in medium and high voltage networks, the grounding system needs to handle extremely high currents either for a short duration or prolonged period respectively. This paper investigates the behaviour of bentonite, cement and sand under impulse and alternating high voltage (50Hz) conditions. Fulguritic-formation was observed in all materials under alternating high voltage. The findings reveal that performance of grounding systems under high voltage conditions may significantly change from the outcomes anticipated at design stage.
引用
收藏
页码：811 / 826
页数：16
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