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primary topic: Assessment of neutralized waste cooking oil as a potential transformer dielectric liquid

Assessment of neutralized waste cooking oil as a potential transformer dielectric liquid
type: AcademicArticle
type: Article
abstract: When an oil-immersed transformer fails because of a short circuit, fire can occur because of the relatively low flash point of the mineral insulating oil. One of the ways to overcome this problem is to replace mineral insulating oil with vegetable-based insulating oils of higher flash points. This study explores the potential of waste cooking oil as a transformer dielectric liquid. The waste cooking oil used in this study is a vegetable-based oil with a high flash point. However, its acidity is above the permissible limit, which hinders its use in transformers. Therefore, the waste cooking oil was neutralized with caustic soda (normality: 1.0, 2.0, 3.0, 4.0, and 5.0 N) at a temperature of 70°C and stirring speed of 400 rpm for 5 min. The physical, chemical, and electrical properties of the neutralized waste cooking oil samples were determined. The results showed that the waste cooking oil neutralized with caustic soda (normality: 2.0 N) had the lowest acidity (0.2825 mg KOH/g). The breakdown voltage and viscosity of this oil sample were 29 kV and 40.92 mm2/s, respectively, which fulfilled the specifications of the IEEE C57.147 standard. In addition, this oil sample had a flash point of 260°C, which fulfilled the requirement of the IEC 62770 standard. Based on these results, it can be concluded that the neutralized waste cooking oil sample (normality: 2.0 N) has potential as a transformer dielectric liquid. © 2020 PENERBIT AKADEMIA BARU-All rights reserved.
date: 2020
volume: 66
issue: 1
is part of: Journal of Advanced Research in Fluid Mechanics and Thermal Sciences
status: peerReviewed
status: published
author list: authors
type: EPrint
type: ArticleEPrint
is part of: repository

Penerbit Akademia Baru
type: Organization

Journal of Advanced Research in Fluid Mechanics and Thermal Sciences
type: Collection
issn: 22897879

Md Nazri Othman
type: Person
given name: Md Nazri
family name: Othman

Nur Hakimah Ab Aziz
type: Person
given name: Nur Hakimah Ab
family name: Aziz

Sharin Ab Ghani
type: Person
given name: Sharin Ab
family name: Ghani

Imran Sutan Chairul
type: Person
given name: Imran Sutan
family name: Chairul

Norazhar Abu Bakar
type: Person
given name: Norazhar Abu
family name: Bakar

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primary topic: Assessment of neutralized waste cooking oil as a potential transformer dielectric liquid