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Multicriteria Framework for Risk Assessment of Power Transformers

Author

Listed:
  • João Marcondes Corrêa Guimarães

    (School of Engineering and Sciences, São Paulo State University (UNESP), Guaratinguetá 12516-410, Brazil)

  • Ligia Cintra Pereira

    (School of Engineering and Sciences, São Paulo State University (UNESP), Guaratinguetá 12516-410, Brazil)

  • Antonio Faria Neto

    (School of Engineering and Sciences, São Paulo State University (UNESP), Guaratinguetá 12516-410, Brazil)

  • Agnelo Marotta Cassula

    (School of Engineering and Sciences, São Paulo State University (UNESP), Guaratinguetá 12516-410, Brazil)

  • Talita Mariane Cristino

    (School of Engineering and Sciences, São Paulo State University (UNESP), Guaratinguetá 12516-410, Brazil)

Abstract

Transformers are critical assets for power system reliability, as they connect different voltage levels across generation, transmission, and distribution. Their failure can lead to significant impacts on multiple aspects. Given the aging transformer fleet, supply chain challenges, and constrained investment capacity, the adoption of risk-based strategies is essential to support long-term maintenance planning and investment. This paper proposes a multicriteria framework to assess the probability and impact of transformer failure, enabling a more comprehensive and data-driven risk evaluation. The method was applied to a sample fleet, enabling the identification and prioritization of the most critical units through a risk plot. The framework enhances asset management by identifying critical units within a transformer fleet, promoting efficiency, reliability, and long-term planning based on objective risk indicators.

Suggested Citation

  • João Marcondes Corrêa Guimarães & Ligia Cintra Pereira & Antonio Faria Neto & Agnelo Marotta Cassula & Talita Mariane Cristino, 2025. "Multicriteria Framework for Risk Assessment of Power Transformers," Energies, MDPI, vol. 18(15), pages 1-19, July.
    • Handle: RePEc:gam:jeners:v:18:y:2025:i:15:p:4049-:d:1713387
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