Electrical properties of ester dielectric fluids from palm kernel oil

Abdelmalik, A. A., Fothergill, J. & Dodd, S. J. (2011). Electrical properties of ester dielectric fluids from palm kernel oil. 2011 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (CEIDP), pp. 415-418. doi: 10.1109/CEIDP.2011.6232683

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Abstract

This paper presents characteristics of dielectric fluids prepared from chemical modification of palm kernel oil ester as an alternative to mineral oil for use in HV electric equipment such as transformers. The palm kernel oil-based alkyl ester dielectric fluids were synthesized from palm kernel oil through epoxidation and esterification reactions. The functional groups in the alkyl esters were identified using FTIR spectroscopy. The rationale for this processing and its effect on the physical properties, such as melting, are presented. The AC breakdown voltage, volume resistivity, relative complex permittivity, and tan of the esters were measured. The dielectric response results indicate that the relaxation processes correspond to ionic conduction and electrode polarization phenomena. The breakdown strength of the alkyl esters were found to have a significant improvement compared with the crude oil sample.

Item Type: Article
Additional Information: © 2011 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Uncontrolled Keywords: breakdown strength; dielectric response; ester derivatives; palm kernel oil; thermo-physical properties
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Vice-Chancellor's Portfolio
URI: http://openaccess.city.ac.uk/id/eprint/7071

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