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Coconut oil for utility transformers – Environmental safety and sustainability perspectives

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  • Das, Anu Kumar
  • Ch Shill, Dayal
  • Chatterjee, Saibal

Abstract

Nowadays, the electric utility is witnessing a paradigm shift from conventional mineral-based transformer oils that are exhausting, ecologically unsafe, and verified hazardous to natural esters that are renewable, environmentally friendly, and safe. Day-by-day, the pressures to decrease liability risks of utility transformers filled with mineral oils are rising whereas there are challenges to increase network efficiency and implement more “eco-friendly” alternatives in the electric utility. In the past 30 years, there has been a reappearance of natural ester-based transformer oils due to their biodegradability and fire safety credentials. Meanwhile, new vegetable oils rarely used so far in utility transformers are also being researched for their dielectric performance. Coconut oil is one such new vegetable oil recently studied and found to have good dielectric and physicochemical properties for use in the transformer. This paper examines and relates vegetable oils, particularly coconut oil, with mineral oil in terms of eco-toxicity properties and biodegradability. It also discusses the sustainability aspects and market potential of coconut oil, and concisely presents the eco-mark schemes to promote environmental conservation. In short, this paper provides electric utility, transformer manufacturers, and users about the environmental safety and prospect of transformer oil based on oil extracted from “coconut".

Suggested Citation

  • Das, Anu Kumar & Ch Shill, Dayal & Chatterjee, Saibal, 2022. "Coconut oil for utility transformers – Environmental safety and sustainability perspectives," Renewable and Sustainable Energy Reviews, Elsevier, vol. 164(C).
    • Handle: RePEc:eee:rensus:v:164:y:2022:i:c:s1364032122004683
    DOI: 10.1016/j.rser.2022.112572
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    References listed on IDEAS

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    1. Kalam, M.A & Husnawan, M & Masjuki, H.H, 2003. "Exhaust emission and combustion evaluation of coconut oil-powered indirect injection diesel engine," Renewable Energy, Elsevier, vol. 28(15), pages 2405-2415.
    2. Nurul Izzatul Akma Katim & Mohd Taufiq Ishak & Nur Aqilah Mohamad Amin & Mardhiah Hayati Abdul Hamid & Khairol Amali Ahmad & Norhafiz Azis, 2018. "Lightning Breakdown Voltage Evaluation of Palm Oil and Coconut Oil as Transformer Oil under Quasi-Uniform Field Conditions," Energies, MDPI, vol. 11(10), pages 1-15, October.
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