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20-08-2020 | Original Research

Morphological analysis of transformer Kraft paper impregnated with dielectric nanofluids

Authors: Daniel Pérez-Rosa, Belén García, Juan Carlos Burgos, Adrían Febrero

Published in: Cellulose | Issue 15/2020

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Abstract

The use of dielectric nanofluids has been recently proposed as a method to improve the insulation system of transformers. It has been widely reported that these liquids present superior dielectric properties than conventional dielectric liquids and have a better behavior as cooling agents. Nevertheless some aspects need to be addressed before these materials are applicable to real equipment. This paper analyzes the interaction between dielectric nanofluids and the cellulose materials that constitute the solid insulation of transformers. The impregnation process of a transformer has been emulated in order to obtain samples of solid insulation impregnated with a \(\hbox {Fe}_{3}\hbox {O}_{4}\) based nanofluid. The samples have been subjected to ICP testing and Cryo-SEM observation, complemented with the determination of the EDX sprectrum. The interaction between the nanoparticles and the cellulose fibers has been investigated finding that bonds are established between them when cellulose is impregnated with nanofluids.

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Title: Morphological analysis of transformer Kraft paper impregnated with dielectric nanofluids
Authors: Daniel Pérez-Rosa
Belén García
Juan Carlos Burgos
Adrían Febrero
Publication date: 20-08-2020
Publisher: Springer Netherlands
Published in: Cellulose / Issue 15/2020
Print ISSN: 0969-0239
Electronic ISSN: 1572-882X
DOI: https://doi.org/10.1007/s10570-020-03386-1

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