Large power transformer reliability modeling

Mahfoud Chafai, Larbi Refoufi and Hamid Bentarzi ()
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Mahfoud Chafai: UMBB University
Larbi Refoufi: UMBB University
Hamid Bentarzi: UMBB University

International Journal of System Assurance Engineering and Management, 2016, vol. 7, issue 1, No 2, 9-17

Abstract: 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.

Keywords: Power transformer; Failure rate; Failure mechanism; Reliability (search for similar items in EconPapers)
Date: 2016
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Citations: View citations in EconPapers (1)

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DOI: 10.1007/s13198-014-0261-2

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