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Energies 2015, 8(10), 12147-12186;

Effect of Loads and Other Key Factors on Oil-Transformer Ageing: Sustainability Benefits and Challenges

University of Beira Interior, R. Fonte do Lameiro, Covilha 6201-001, Portugal
Faculty of Engineering of the University of Porto, R. Dr. Roberto Frias, Porto 4200-465, Portugal
INESC-ID, Instituto Superior Técnico, University of Lisbon, Av. Rovisco Pais, 1, Lisbon 1049-001, Portugal
Author to whom correspondence should be addressed.
Academic Editor: Chang Sik Lee
Received: 4 August 2015 / Revised: 22 September 2015 / Accepted: 16 October 2015 / Published: 27 October 2015
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Transformers are one of the more expensive pieces of equipment found in a distribution network. The transformer’s role has not changed over the last decades. With simple construction and at the same time mechanically robust, they offer long term service that on average can reach half a century. Today, with the ongoing trend to supply a growing number of non-linear loads along with the notion of distributed generation (DG), a new challenge has arisen in terms of transformer sustainability, with one of the possible consequences being accelerated ageing. In this paper we carefully review the existing studies in the literature of the effect of loads and other key factors on oil-transformer ageing. The state-of-the-art is reviewed, each factor is analysed in detail, and in the end a smart transformer protection method is sought in order to monitor and protect it from upcoming challenges. View Full-Text
Keywords: energy; distribution network; load; transformer; sustainability energy; distribution network; load; transformer; sustainability

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Godina, R.; Rodrigues, E.M.G.; Matias, J.C.O.; Catalão, J.P.S. Effect of Loads and Other Key Factors on Oil-Transformer Ageing: Sustainability Benefits and Challenges. Energies 2015, 8, 12147-12186.

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