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Lightning breakdown voltages of refined bleached and deodorised palm oil under needle-plane configuration

Azis, Norhafiz and Thien, Yee Von and Yunus, Robiah and Yaakub, Zaini (2017) Lightning breakdown voltages of refined bleached and deodorised palm oil under needle-plane configuration. Pertanika Journal of Science & Technology, 25 (spec. Feb.). pp. 69-78. ISSN 0128-7680; ESSN: 2231-8526

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Abstract

In recent years, vegetable oil such as Palm Oil (PO) has been identified as a potential alternative dielectric insulating fluid for transformers. It is biodegradable, non-toxic and has high flash and fire points. In this paper, a study on the positive lightning impulse breakdown voltages of PO under non-uniform field is carried out. The testing was carried out using needle-plane electrodes configuration at gap distances of 25 mm and 50 mm. Rising voltage, 1 and 3 shots per step testing methods were used and 3 types of Refined Bleach and Deodorized Palm Oil (RBDPO) and Mineral Oil (MO) were examined. It was found there is no significant effect on the breakdown voltages of all samples. The breakdown voltages of all RBDPO at 50% probability are comparable with MO. At 1% probability and gap distance of 50 mm, the breakdown voltages of all RBDPO are lower than MO.

Item Type:Article
Keyword:Lightning breakdown voltage; Non-uniform field; Palm oil; Transformers
Faculty or Institute:Faculty of Engineering
Publisher:Universiti Putra Malaysia Press
ID Code:55901
Deposited By: Nabilah Mustapa
Deposited On:30 Jun 2017 17:52
Last Modified:05 Jul 2017 11:31

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