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Large power transformer reliability modeling

Author

Listed:
  • Mahfoud Chafai

    (UMBB University)

  • Larbi Refoufi

    (UMBB University)

  • Hamid Bentarzi

    (UMBB University)

Abstract

In this paper, a simple reliability model of power transformers is developed with the help of field data that place in evidence, dominating failure modes and mechanisms. Field data failures distribution indicates a dominance of failure modes pertaining to winding insulation, tank oil, load tap changers (LTCs) and bushings. From a reliability point of view, the transformer system consists of four main parts such as winding inter-turn insulation, tank oil, LTCs and bushings. On this basis, a reliability block diagram of the transformer system is built from a series configuration comprising the above mentioned parts. The reliability functions developed for all parts will yield together to the transformer system reliability.

Suggested Citation

  • Mahfoud Chafai & Larbi Refoufi & Hamid Bentarzi, 2016. "Large power transformer reliability modeling," International Journal of System Assurance Engineering and Management, Springer;The Society for Reliability, Engineering Quality and Operations Management (SREQOM),India, and Division of Operation and Maintenance, Lulea University of Technology, Sweden, vol. 7(1), pages 9-17, December.
    • Handle: RePEc:spr:ijsaem:v:7:y:2016:i:1:d:10.1007_s13198-014-0261-2
    DOI: 10.1007/s13198-014-0261-2
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    Cited by:

    1. Raji Murugan & Ramasamy Raju, 2021. "Evaluation of in-service power transformer health condition for Inspection, Repair, and Replacement (IRR) maintenance planning in electric utilities," International Journal of System Assurance Engineering and Management, Springer;The Society for Reliability, Engineering Quality and Operations Management (SREQOM),India, and Division of Operation and Maintenance, Lulea University of Technology, Sweden, vol. 12(2), pages 318-336, April.

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