Resumo

MARTINS, Maria Augusta G.. Gestão da vida útil dos transformadores. C.Tecn. Mat. [online]. 2009, vol.21, n.3-4, pp.2-9. ISSN 0870-8312.

Nowadays, utilities are facing the problem of a predictable increasing failure rate, as the transformer populations approach their end of life. The management of the transformers useful remaining life is, nowadays, one of the main concerns of utilities. The preventive maintenance is based on some transformer diagnostic techniques and it is an useful tool, to help the transformer life management, that besides technical criteria, are also based on economic and strategic criteria. This paper presents the most suitable criteria used for transformer life management, the most common diagnostic tools used for condition assessment of transformers, and. the maintenance techniques used for the extension of their remaining useful life.

Palavras-chave : Transformer; Diagnostic techniques; Useful life; Condition assessment; Preventive maintenance; Transformer management; Oil tests; Paper tests; Electrical tests; Oil treatments; Economic criteria; Strategic criteria; Technical criteria.

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