What is it about?
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.
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Why is it important?
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.
Perspectives
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.
Pr Hamid Bentarzi
Universite M'Hamed Bougara Boumerdes
Read the Original
This page is a summary of: Large power transformer reliability modeling, International Journal of Systems Assurance Engineering and Management, May 2014, Springer Science + Business Media,
DOI: 10.1007/s13198-014-0261-2.
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