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Large power transformer reliability modeling

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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.

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Authors and Affiliations

  1. Signals and Systems Laboratory, IGEE, UMBB University, Boumerdes, Algeria

    Mahfoud Chafai, Larbi Refoufi & Hamid Bentarzi

Authors
  1. Mahfoud Chafai
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  2. Larbi Refoufi
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  3. Hamid Bentarzi
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Correspondence to Hamid Bentarzi.

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Chafai, M., Refoufi, L. & Bentarzi, H. Large power transformer reliability modeling. Int J Syst Assur Eng Manag 7 (Suppl 1), 9–17 (2016). https://doi.org/10.1007/s13198-014-0261-2

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  • DOI: https://doi.org/10.1007/s13198-014-0261-2

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