@article{10902/15048,
year = {2018},
month = {10},
url = {http://hdl.handle.net/10902/15048},
abstract = {Vegetal oils are considered a suitable substitute for mineral oil that is widely used in power transformers as insulation and cooling medium. Due to the fact that more and more power transformers containing this alternative insulating fluid are being constructed a mathematical ageing models is needed to help predict transformer failures. The continued performance of power transformers depends on the condition of its paper insulation mainly. In this sense, this paper analyses Kraft paper degradation through the loss of its mechanical strength. Accelerated thermal ageing test of the paper in two different vegetal oils were carried out at three temperatures during diverse periods of time, in order to obtain information on the kinetics of the ageing degradation of the paper. The evolution of the mechanical properties of paper failure are analysed as a function of temperature and ageing time. In addition, the results obtained are compared with the traditional method of degradation analysis, based on the measurement of the degree of polymerisation.},
organization = {The authors are grateful for the funding received to carry out this work from the State Scientific and Technical Research and Innovation Plan under the DPI2013-43897-P grant agreement, financed by the Government of Spain.},
publisher = {Institute of Electrical and Electronics Engineers Inc.},
publisher = {IEEE Transactions on Dielectrics and Electrical Insulation, 2018, 25(5), 1880-1887},
title = {Assessment of the effect of commercial vegetal oils on Kraft paper ageing through mechanical characterization},
author = {Fernández Diego, Cristina and Ortiz Fernández, Alfredo and Fernández Diego, Inmaculada and Carrascal Vaquero, Isidro Alfonso and Renedo Estébanez, Carlos J. and Delgado San Román, Fernando},
}