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Comparison of Oil-impregnated Papers with SiO2 and ZnO Nanoparticles or High Lignin Content, for the Effect of Superimposed Impulse Voltage on AC Surface PD
KTH, School of Electrical Engineering (EES), Electromagnetic Engineering.ORCID iD: 0000-0003-0759-4406
KTH, School of Electrical Engineering (EES), Electromagnetic Engineering.
KTH, School of Chemical Science and Engineering (CHE), Fibre and Polymer Technology.
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2017 (English)In: IEEE transactions on dielectrics and electrical insulation, ISSN 1070-9878, E-ISSN 1558-4135, Vol. 24, no 3, p. 1726-1734Article in journal (Refereed) Published
Abstract [en]

Surface discharge behavior of modified oil-impregnated paper (OIP) with nanoparticles (NPs), has been investigated under AC voltage with superimposed impulses. Surface Partial Discharges (PD) can develop at an oil-paper interface and lead to its degradation. Modified paper, made from fibers with adsorbed nanoparticles, can affect the partial discharge behavior of a paper in combination with oil at the interface between oil and fibers. Papers with two different concentrations (2 wt% and 6 wt%) of silica (SiO2), and paper with silanized zinc oxide (ZnO) nanoparticles (1 wt%) have been studied. Papers with SiO2 NPs showed lower impulse-induced surface PD activity. However, thorough purification during the production of SiO2 filled papers was necessary to achieve a good performance. With less purification, paper with 2 wt% of SiO2 did not show such significant improvements. Paper with 6 wt% of SiO2 NPs showed a large number of AC surface PDs, but low influence of impulse voltage on subsequent PD. Papers containing 1 wt% of silanized ZnO showed reduced relative permittivity, but no significant difference in surface PD behavior. The effect of high lignin content in Kraft paper has also been studied. Paper with higher lignin content showed better surface PD characteristics under the impulse. Paper with low concentrations of pure SiO2 NPs, and paper with high lignin content thus appear good candidates for further studies to improve the surface PD behavior of OIP.

Place, publisher, year, edition, pages
IEEE, 2017. Vol. 24, no 3, p. 1726-1734
Keywords [en]
Nanoparticles, SiO2, silanized ZnO, superimposed impulse, oil-impregnated paper, lignin
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:kth:diva-211614DOI: 10.1109/TDEI.2017.006053ISI: 000405000300046Scopus ID: 2-s2.0-85022338626OAI: oai:DiVA.org:kth-211614DiVA, id: diva2:1130832
Funder
SweGRIDS - Swedish Centre for Smart Grids and Energy StorageSwedish Energy Agency
Note

QC 201708010

Available from: 2017-08-11 Created: 2017-08-11 Last updated: 2017-08-11Bibliographically approved

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Taylor, NathanielEdin, HansHollertz, RebeccaWåhlander, MartinWågberg, LarsMalmström, Eva

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Electrical Engineering, Electronic Engineering, Information Engineering

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