Performance analysis of natural, synthetic and mineral oil in a 100 MVA power transformer

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URI: http://hdl.handle.net/10902/21725
ISBN: 978-1-7281-8983-3
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Autoría
Altay, Ramazan; Santisteban Díaz, AgustínAutoridad Unican; Olmo Salas, CristianAutoridad Unican; Delgado San Román, FernandoAutoridad Unican; Renedo Estébanez, Carlos J.Autoridad Unican; Köseoglu, A. Kerem; Ortiz Fernández, AlfredoAutoridad Unican
Fecha
2020
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© 2020 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works
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3rd IEEE International Conference on Dielectrics (ICD), Valencia, 2020, 770-773
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Resumen/Abstract
The power transformer lifespan depends on the dielectric capacity of its insulation system, mainly of the paper. Integrity of this material depends significantly on the cooling capacity of the oil used to cool it. Currently, ester-based fluids are being researched with the intention to substitute the traditional cooling liquid in power transformers, the mineral oil. Here, cooling capacity of two different ester-based fluids, a synthetic and anatural esters, is compared with that of a mineral oil. To carry out this task, CFD results of a low voltage winding of a 100 MVA power transformer jointly with the experimental ones get from a heat-run test done in this transformer are used. This winding has an axial cooling system in ON regime. As a result of this study, it can be inferred that alternative liquids could be used with high load levels (rated power or higher) since no significant changes in the temperatures distribution of the winding cooled with these fluids in comparison with that get with mineral oil are appreciated.
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