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Development of a Biodegradable Electro-Insulating Liquid and Its Subsequent Modification by Nanoparticles

Author

Listed:
  • Vaclav Mentlik

    (Department of Technologies and Measurement, Faculty of Electrical Engineering, University of West Bohemia, 30614 Pilsen, Czech Republic)

  • Pavel Trnka

    (Department of Technologies and Measurement, Faculty of Electrical Engineering, University of West Bohemia, 30614 Pilsen, Czech Republic)

  • Jaroslav Hornak

    (Department of Technologies and Measurement, Faculty of Electrical Engineering, University of West Bohemia, 30614 Pilsen, Czech Republic)

  • Pavel Totzauer

    (Department of Technologies and Measurement, Faculty of Electrical Engineering, University of West Bohemia, 30614 Pilsen, Czech Republic)

Abstract

The paper is focused on the possibility of replacing petroleum-based oils used as electro-insulating fluids in high voltage machinery. Based on ten years of study the candidate base oil for the central European region is rapeseed (Brassica napus) oil. Numerous studies on the elementary properties of pure natural esters have been published. An advantage of natural ester use is its easy biodegradability, tested according to OECD–301D (Organisation for Economic Co-operation and Development) standard, and compliance with sustainable development visions. A rapeseed oil base has been chosen for its better resistance to degradation in electric fields and its higher oxidation stability. The overall ester properties are not fully competitive with petroleum-based oils and therefore have to be improved. Percolation treatment and oxidation inhibition by a phenolic-type inhibitor is proposed and the resulting final properties are discussed. These resulting fluid properties are further improved using titanium dioxide (TiO 2 ) nanoparticles with a silica surface treatment. This fluid has properties suitable for use in sealed distribution transformers with the advantage of a lower price in comparison with other currently used biodegradable fluids.

Suggested Citation

  • Vaclav Mentlik & Pavel Trnka & Jaroslav Hornak & Pavel Totzauer, 2018. "Development of a Biodegradable Electro-Insulating Liquid and Its Subsequent Modification by Nanoparticles," Energies, MDPI, vol. 11(3), pages 1-16, February.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:3:p:508-:d:133728
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    References listed on IDEAS

    as
    1. Kapila Bandara & Chandima Ekanayake & Tapan Saha & Hui Ma, 2016. "Performance of Natural Ester as a Transformer Oil in Moisture-Rich Environments," Energies, MDPI, vol. 9(4), pages 1-13, March.
    2. Yuzhen Lv & Muhammad Rafiq & Chengrong Li & Bingliang Shan, 2017. "Study of Dielectric Breakdown Performance of Transformer Oil Based Magnetic Nanofluids," Energies, MDPI, vol. 10(7), pages 1-21, July.
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    Cited by:

    1. Issouf Fofana & U. Mohan Rao, 2018. "Engineering Dielectric Liquid Applications," Energies, MDPI, vol. 11(10), pages 1-4, October.
    2. Miloš Šárpataky & Juraj Kurimský & Michal Rajňák & Michal Krbal & Marek Adamčák, 2022. "Dielectric Performance of Natural- and Synthetic-Ester-Based Nanofluids with Fullerene Nanoparticles," Energies, MDPI, vol. 16(1), pages 1-15, December.
    3. Karatas, Mehmet & Bicen, Yunus, 2022. "Nanoparticles for next-generation transformer insulating fluids: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 167(C).
    4. Pawel Rozga & Abderrahmane Beroual & Piotr Przybylek & Maciej Jaroszewski & Konrad Strzelecki, 2020. "A Review on Synthetic Ester Liquids for Transformer Applications," Energies, MDPI, vol. 13(23), pages 1-33, December.

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