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Energies 2015, 8(10), 12147-12186; doi:10.3390/en81012147

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

1
University of Beira Interior, R. Fonte do Lameiro, Covilha 6201-001, Portugal
2
Faculty of Engineering of the University of Porto, R. Dr. Roberto Frias, Porto 4200-465, Portugal
3
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
View Full-Text   |   Download PDF [490 KB, uploaded 27 October 2015]   |  

Abstract

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
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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MDPI and ACS Style

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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