Thermal degradation assessment of Kraft paper in power transformers insulated with natural esters

Fernández Diego, Inmaculada; Delgado San Román, Fernando; Ortiz Fernández, Félix; Ortiz Fernández, Alfredo; Fernández Diego, Cristina; Renedo Estébanez, Carlos J.; Santisteban Díaz, Agustín

doi:10.1016/j.applthermaleng.2016.05.020

dc.contributor.author	Fernández Diego, Inmaculada
dc.contributor.author	Delgado San Román, Fernando
dc.contributor.author	Ortiz Fernández, Félix
dc.contributor.author	Ortiz Fernández, Alfredo
dc.contributor.author	Fernández Diego, Cristina
dc.contributor.author	Renedo Estébanez, Carlos J.
dc.contributor.author	Santisteban Díaz, Agustín
dc.contributor.other	Universidad de Cantabria	es_ES
dc.date.accessioned	2017-06-08T15:32:18Z
dc.date.available	2018-07-31T02:45:08Z
dc.date.issued	2016-07-05
dc.identifier.issn	1359-4311
dc.identifier.issn	1873-5606
dc.identifier.other	DPI2013- 43897-P	es_ES
dc.identifier.uri	http://hdl.handle.net/10902/11184
dc.description.abstract	Kraft paper in combination with dielectric oil is the most common as insulation system used in power transformers. The most used oil in power transformers is mineral oil. However, dielectric oils based on natural esters possess some advantages in comparison with mineral oil such as higher biodegradability, fire safety and availability. Therefore, they might be the most ideal substitute for mineral oil. The introduction of a new material requires the evaluation of its degradation rate because this determines transformers’ life span. In order to assess the performance of new insulating systems based on vegetable oils, simulations to obtain the hot-spot temperatures in power transformers using vegetable oils and controlled laboratory experiments of ageing were carried out. The reason is that hot spot temperature inside windings of the oil-immersed power transformers is one of the main manifestations of the thermal stress which leads to aging of insulation systems.	es_ES
dc.description.sponsorship	The research leading to these results has received funding from multiple sources during years but we would specifically like to acknowledge the support received in the later stages from the Spanish Plan Estatal de I+D under the grant agreement DPI2013- 43897-P.	es_ES
dc.format.extent	13 p.	es_ES
dc.language.iso	eng	es_ES
dc.publisher	Elsevier Ltd	es_ES
dc.rights	© 2016, Elsevier. Licensed under the Creative Commons Reconocimiento-NoComercial-SinObra-Derivada	es_ES
dc.rights.uri	http://creativecommons.org/licenses/by-nc-nd/3.0/es/	*
dc.source	Applied Thermal Engineering, 2016, 104, 129-138	es_ES
dc.subject.other	Kraft paper	es_ES
dc.subject.other	Natural esters	es_ES
dc.subject.other	Degradation rate	es_ES
dc.subject.other	Power transformer	es_ES
dc.subject.other	Insulation system	es_ES
dc.title	Thermal degradation assessment of Kraft paper in power transformers insulated with natural esters	es_ES
dc.type	info:eu-repo/semantics/article	es_ES
dc.relation.publisherVersion	https://doi.org/10.1016/j.applthermaleng.2016.05.020	es_ES
dc.rights.accessRights	openAccess	es_ES
dc.identifier.DOI	10.1016/j.applthermaleng.2016.05.020
dc.type.version	acceptedVersion	es_ES