IDEAS home Printed from https://ideas.repec.org/a/gam/jeners/v16y2023i14p5297-d1191381.html
   My bibliography  Save this article

Bubble Effect Phenomenon in Modern Transformer Insulation Systems Using Aramid-Based Materials and Alternative Insulating Liquids

Author

Listed:
  • Kamil Lewandowski

    (Institute of Electric Power Engineering, Poznan University of Technology, Piotrowo 3A Str., 61-138 Poznan, Poland
    Power Engineering Transformatory Sp. z o.o., Gdynska 83 Str., 62-004 Czerwonak, Poland)

  • Hubert Moranda

    (Institute of Electric Power Engineering, Poznan University of Technology, Piotrowo 3A Str., 61-138 Poznan, Poland)

  • Radoslaw Szewczyk

    (DuPont Polska Sp. z o.o., Al. Jerozolimskie 93, 02-001 Warszawa, Poland)

Abstract

One of the possible causes of transformer failures is high moisture in the winding insulation system. In an extreme case, when the critical temperature is exceeded, a sudden release of water vapor from the transformer insulation, called the bubble effect, can occur. This article analyzes the initiation temperature of the bubble phenomenon in various solid insulation materials (Kraft cellulose paper and aramid-based high-temperature papers such as Nomex ® 910 and Nomex ® 926) immersed in two electro-insulating liquids (mineral oil and Midel 7131 synthetic ester). The initiation temperature of the bubble effect depends mainly on the moisture content of the solid insulation, but it was found to be slightly lower for high-temperature materials than for cellulose. However, after taking into account the differences related to uneven water absorption of the tested materials, the differences in the initiation temperature of individual solid materials are very small. Synthetic ester, compared to mineral oil, slightly increases the bubble initiation temperature, regardless of the solid material used.

Suggested Citation

  • Kamil Lewandowski & Hubert Moranda & Radoslaw Szewczyk, 2023. "Bubble Effect Phenomenon in Modern Transformer Insulation Systems Using Aramid-Based Materials and Alternative Insulating Liquids," Energies, MDPI, vol. 16(14), pages 1-15, July.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:14:p:5297-:d:1191381
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/1996-1073/16/14/5297/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/1996-1073/16/14/5297/
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. Saravanakumar Arumugam, 2021. "Failure Diagnosis and Root-Cause Analysis of In-Service and Defective Distribution Transformers," Energies, MDPI, vol. 14(16), pages 1-20, August.
    2. Piotr Przybylek & Hubert Moranda & Hanna Moscicka-Grzesiak & Dominika Szczesniak, 2019. "Application of Synthetic Ester for Drying Distribution Transformer Insulation—The Influence of Cellulose Thickness on Drying Efficiency," Energies, MDPI, vol. 12(20), pages 1-16, October.
    3. Piotr Przybylek & Hubert Moranda & Hanna Moscicka-Grzesiak & Mateusz Cybulski, 2020. "Laboratory Model Studies on the Drying Efficiency of Transformer Cellulose Insulation Using Synthetic Ester," Energies, MDPI, vol. 13(13), pages 1-11, July.
    4. Chunxu Qin & Yan He & Bing Shi & Tao Zhao & Fangcheng Lv & Xiangrui Cheng, 2018. "Experimental Study on Breakdown Characteristics of Transformer Oil Influenced by Bubbles," Energies, MDPI, vol. 11(3), pages 1-11, March.
    Full references (including those not matched with items on IDEAS)

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. 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.
    2. Zbigniew Nadolny, 2022. "Impact of Changes in Limit Values of Electric and Magnetic Field on Personnel Performing Diagnostics of Transformers," Energies, MDPI, vol. 15(19), pages 1-15, October.
    3. Piotr Przybylek, 2023. "Determination of Mineral Oil Concentration in the Mixture with Synthetic Ester Using Near-Infrared Spectroscopy," Energies, MDPI, vol. 16(17), pages 1-12, September.
    4. Issouf Fofana & U. Mohan Rao, 2018. "Engineering Dielectric Liquid Applications," Energies, MDPI, vol. 11(10), pages 1-4, October.
    5. Tomasz N. Kołtunowicz & Konrad Kierczynski & Pawel Okal & Aleksy Patryn & Miroslav Gutten, 2022. "Diagnostics on the Basis of the Frequency-Temperature Dependences of the Loss Angle Tangent of Heavily Moistured Oil-Impregnated Pressboard," Energies, MDPI, vol. 15(8), pages 1-14, April.
    6. Hubert Moranda & Jaroslaw Gielniak & Ireneusz Kownacki, 2021. "Assessment of Concentration of Mineral Oil in Synthetic Ester Based on the Density of the Mixture and the Capacitance of the Capacitor Immersed in It," Energies, MDPI, vol. 14(7), pages 1-12, March.
    7. Przemyslaw Goscinski & Zbigniew Nadolny & Andrzej Tomczewski & Ryszard Nawrowski & Tomasz Boczar, 2023. "The Influence of Heat Transfer Coefficient α of Insulating Liquids on Power Transformer Cooling Systems," Energies, MDPI, vol. 16(6), pages 1-15, March.
    8. Stefan Wolny & Adam Krotowski, 2020. "Analysis of Polarization and Depolarization Currents of Samples of NOMEX ® 910 Cellulose–Aramid Insulation Impregnated with Mineral Oil," Energies, MDPI, vol. 13(22), pages 1-18, November.
    9. Mateusz Cybulski & Piotr Przybylek, 2021. "Application of Molecular Sieves for Drying Transformers Insulated with Mineral Oil, Natural Ester, or Synthetic Ester," Energies, MDPI, vol. 14(6), pages 1-13, March.
    10. L. Loiselle & U. Mohan Rao & I. Fofana, 2020. "Influence of Aging on Oil Degradation and Gassing Tendency for Mineral oil and Synthetic Ester under Low Energy Discharge Electrical Faults," Energies, MDPI, vol. 13(3), pages 1-12, January.
    11. Piotr Przybylek & Hubert Moranda & Hanna Moscicka-Grzesiak & Mateusz Cybulski, 2020. "Laboratory Model Studies on the Drying Efficiency of Transformer Cellulose Insulation Using Synthetic Ester," Energies, MDPI, vol. 13(13), pages 1-11, July.
    12. Pawel Rozga & Abderahhmane Beroual, 2021. "High Voltage Insulating Materials—Current State and Prospects," Energies, MDPI, vol. 14(13), pages 1-4, June.
    13. Adam Krotowski & Stefan Wolny, 2022. "Analysis of Polarization and Depolarization Currents of Samples of NOMEX ® 910 Cellulose–Aramid Insulation Impregnated with Synthetic Ester," Energies, MDPI, vol. 15(9), pages 1-15, April.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:gam:jeners:v:16:y:2023:i:14:p:5297-:d:1191381. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: MDPI Indexing Manager (email available below). General contact details of provider: https://www.mdpi.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.