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Potential Of Used Cooking Oil As Dielectric Liquid For Oil-Immersed Power Transformers

This paper presents the potential of using treated used cooking oil as a potential dielectric liquid for high-voltage power transformers. The acidity of used cooking oil is higher than the prescribed limit of natural ester for power transformers. Hence, this paper proposes a combination of treatmen...

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Main Authors: Abu Bakar, Norazhar, Sutan Chairul, Imran, Othman, Md Nazri, Ab Ghani, Sharin, Ahmad Khiar, Mohd Shahril
Format: Article
Language:English
Published: IEEE 2021
Online Access:http://eprints.utem.edu.my/id/eprint/25374/2/POTENTIAL_OF_USED_COOKING_OIL_AS_DIELECTRIC_LIQUID_FOR_OIL-IMMERSED_POWER_TRANSFORMERS.PDF
http://eprints.utem.edu.my/id/eprint/25374/
https://ieeexplore.ieee.org/document/9515828
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spelling my.utem.eprints.253742021-12-20T15:24:55Z http://eprints.utem.edu.my/id/eprint/25374/ Potential Of Used Cooking Oil As Dielectric Liquid For Oil-Immersed Power Transformers Abu Bakar, Norazhar Sutan Chairul, Imran Othman, Md Nazri Ab Ghani, Sharin Ahmad Khiar, Mohd Shahril This paper presents the potential of using treated used cooking oil as a potential dielectric liquid for high-voltage power transformers. The acidity of used cooking oil is higher than the prescribed limit of natural ester for power transformers. Hence, this paper proposes a combination of treatment methods to reduce the acidity of used cooking oil to less than 0.06 mg KOH/g. The treatment methods are: (1) alkaline refining, (2) bleaching and (3) synthetic silicate treatment. The physicochemical and electrical properties (acidity, color, density, flash point, viscosity, water content, breakdown voltage and dissipation factor) of the treated used cooking oil are measured according to standards. The results show that the acidity of the treated used cooking oil is 0.0182 mg KOH/g, which is 99.67% lower than the initial value of 5.4664 mg KOH/g. This acidity is achieved by implementing the following treatment methods: (1) alkaline refining using caustic soda (normality: 2.0N); (2) two cycles of bleaching with Fuller earth’s adsorbent (concentration: 10 wt%) in each cycle; and (3) treatment with synthetic silicate absorbent (concentration: 15 wt%). In addition, combined treatment methods affect the color rating of the treated used cooking oil, where the color rating is L0.5. The breakdown voltage and dissipation factor at 90 °C of the treated used cooking oil are found to be 100kV and 0.00688, respectively. The other physicochemical properties (density, viscosity and water content) of the treated used cooking oil fulfills the BS EN 62770 standard except for the flash point, with a value of 234 °C. IEEE 2021-08-17 Article PeerReviewed text en http://eprints.utem.edu.my/id/eprint/25374/2/POTENTIAL_OF_USED_COOKING_OIL_AS_DIELECTRIC_LIQUID_FOR_OIL-IMMERSED_POWER_TRANSFORMERS.PDF Abu Bakar, Norazhar and Sutan Chairul, Imran and Othman, Md Nazri and Ab Ghani, Sharin and Ahmad Khiar, Mohd Shahril (2021) Potential Of Used Cooking Oil As Dielectric Liquid For Oil-Immersed Power Transformers. IEEE Transactions on Dielectrics and Electrical Insulation, 28 (4). pp. 1400-1407. ISSN 1070-9878 https://ieeexplore.ieee.org/document/9515828 10.1109/TDEI.2021.009536
institution Universiti Teknikal Malaysia Melaka
building UTEM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknikal Malaysia Melaka
content_source UTEM Institutional Repository
url_provider http://eprints.utem.edu.my/
language English
description This paper presents the potential of using treated used cooking oil as a potential dielectric liquid for high-voltage power transformers. The acidity of used cooking oil is higher than the prescribed limit of natural ester for power transformers. Hence, this paper proposes a combination of treatment methods to reduce the acidity of used cooking oil to less than 0.06 mg KOH/g. The treatment methods are: (1) alkaline refining, (2) bleaching and (3) synthetic silicate treatment. The physicochemical and electrical properties (acidity, color, density, flash point, viscosity, water content, breakdown voltage and dissipation factor) of the treated used cooking oil are measured according to standards. The results show that the acidity of the treated used cooking oil is 0.0182 mg KOH/g, which is 99.67% lower than the initial value of 5.4664 mg KOH/g. This acidity is achieved by implementing the following treatment methods: (1) alkaline refining using caustic soda (normality: 2.0N); (2) two cycles of bleaching with Fuller earth’s adsorbent (concentration: 10 wt%) in each cycle; and (3) treatment with synthetic silicate absorbent (concentration: 15 wt%). In addition, combined treatment methods affect the color rating of the treated used cooking oil, where the color rating is L0.5. The breakdown voltage and dissipation factor at 90 °C of the treated used cooking oil are found to be 100kV and 0.00688, respectively. The other physicochemical properties (density, viscosity and water content) of the treated used cooking oil fulfills the BS EN 62770 standard except for the flash point, with a value of 234 °C.
format Article
author Abu Bakar, Norazhar
Sutan Chairul, Imran
Othman, Md Nazri
Ab Ghani, Sharin
Ahmad Khiar, Mohd Shahril
spellingShingle Abu Bakar, Norazhar
Sutan Chairul, Imran
Othman, Md Nazri
Ab Ghani, Sharin
Ahmad Khiar, Mohd Shahril
Potential Of Used Cooking Oil As Dielectric Liquid For Oil-Immersed Power Transformers
author_facet Abu Bakar, Norazhar
Sutan Chairul, Imran
Othman, Md Nazri
Ab Ghani, Sharin
Ahmad Khiar, Mohd Shahril
author_sort Abu Bakar, Norazhar
title Potential Of Used Cooking Oil As Dielectric Liquid For Oil-Immersed Power Transformers
title_short Potential Of Used Cooking Oil As Dielectric Liquid For Oil-Immersed Power Transformers
title_full Potential Of Used Cooking Oil As Dielectric Liquid For Oil-Immersed Power Transformers
title_fullStr Potential Of Used Cooking Oil As Dielectric Liquid For Oil-Immersed Power Transformers
title_full_unstemmed Potential Of Used Cooking Oil As Dielectric Liquid For Oil-Immersed Power Transformers
title_sort potential of used cooking oil as dielectric liquid for oil-immersed power transformers
publisher IEEE
publishDate 2021
url http://eprints.utem.edu.my/id/eprint/25374/2/POTENTIAL_OF_USED_COOKING_OIL_AS_DIELECTRIC_LIQUID_FOR_OIL-IMMERSED_POWER_TRANSFORMERS.PDF
http://eprints.utem.edu.my/id/eprint/25374/
https://ieeexplore.ieee.org/document/9515828
_version_ 1720440238915977216
score 13.211869

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