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Showing results 1-36 of 36

2020
1 Linhjell, Dag; Lundgaard, Lars Esben; Unge, M.; Hjortstam, Olof.
Pressure-Dependent Propagation of Streamers under Step Voltage in a long Point-Plane Gap in Transformer Oil. IEEE transactions on dielectrics and electrical insulation 2020
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2 Linhjell, Dag; Lundgaard, Lars Esben; Unge, Michael; Hjortstam, Olof.
Prebreakdown phenomena in hydrocarbon liquids in a point-plane gap under step voltage. Part 1: behaviour at positive polarity. Journal of Physics Communications 2020
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3 Lundgaard, Lars Esben; Linhjell, Dag; Hestad, Øystein Leif Gurandsrud; Unge, Michael; Hjortstam, Olof.
Pre-breakdown phenomena in hydrocarbon liquids in a point-plane gap under step voltage. Part 2: behaviour under negative polarity and comparison with positive polarity. Journal of Physics Communications 2020
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2019
4 Linhjell, Dag; Lundgaard, Lars Esben; Unge, Mikael.
Pressure Dependent Propagation of Positive Streamers in a long Point-Plane Gap in Transformer Oil. I: 2019 IEEE 20th International Conference on Dielectric Liquids - ICDL. IEEE 2019 ISBN 978-1-7281-1718-8.
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2017
5 Hestad, Øystein Leif Gurandsrud; Linhjell, Dag; Lundgaard, Lars Esben; Samseth, Jarl Ø.; Unge, Mikael.
Field dependent conductivity of n-pentane. I: 2017 IEEE 19th International Conference on Dielectric Liquids - ICDL. IEEE conference proceedings 2017 ISBN 978-1-5090-4877-9. p. -
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6 Liland, Knut Brede; Linhjell, Dag; Lesaint, Cedric Michel; Ese, Marit-Helen Glomm; Lundgaard, Lars Esben; Mavrommatis, Pascal; Stjepanovic, Nenad Miroljub.
Comparison between synthetic ester and mineral oil impregnated transformer paper aging markers. I: 2017 IEEE 19th International Conference on Dielectric Liquids - ICDL. IEEE conference proceedings 2017 ISBN 978-1-5090-4877-9.
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7 Linhjell, Dag; Lundgaard, Lars Esben; Unge, Mikael.
Positive third mode streamers in insulating oil. I: 2017 IEEE 19th International Conference on Dielectric Liquids - ICDL. IEEE conference proceedings 2017 ISBN 978-1-5090-4877-9.
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2016
8 Abdelmalik, Abdelghaffar Amoka; Borge, Malin Drevdal; Nysveen, Arne; Lundgaard, Lars Esben; Linhjell, Dag.
Statistical analysis of dielectric breakdown of liquid insulated printed circuit boards. IEEE transactions on dielectrics and electrical insulation 2016 ;Volume 23.(4) p. 2303-2310
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2015
9 Lundgaard, Lars Esben; Liland, Knut Brede; Linhjell, Dag; Susa, Dejan; Ese, Marit-Helen; Selsbak, Cecilie Mørk; Kes, M; Lesaint, Cedric Michel.
Transformer Windings Ageing, diagnosis and asset management. Version 4. : SINTEF Energi 2015 (ISBN 978-82-594-3665-8) 63 p. SINTEF Energi. Rapport(TR A7099)
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2014
10 Davari, Nazanin; Åstrand, Per-Olof; Unge, Mikael; Lundgaard, Lars Esben; Linhjell, Dag.
Field-dependent molecular ionization and excitation energies: Implications for electrically insulating liquids. AIP Advances 2014 ;Volume 4.(3)
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11 Nguyen, Dung Van; Linhjell, Dag; Lundgaard, Lars Esben; Høidalen, Hans Kristian; Unge, M..
Effects of spatial restriction on streamers in white oil. I: 2014 IEEE 18th International Conference on Dielectric Liquids ICDL. Curran Associates, Inc. 2014 ISBN 9781479920655.
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12 Unge, M.; Singha, S; Ingebrigtsen, Stian; Linhjell, Dag; Lundgaard, Lars Esben.
Influence of molecular additives on positive streamer propagation in ester liquids. I: 2014 IEEE 18th International Conference on Dielectric Liquids ICDL. Curran Associates, Inc. 2014 ISBN 9781479920655.
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2013
13 Davari, Nazanin; Åstrand, Per-Olof; Unge, Michael; Lundgaard, Lars Esben; Linhjell, Dag.
Field-dependent ionization potentials and excitation energies of molecules of relevance for electrically insulating liquids. I: 2013 IEEE Conference on Electrical Insulation and Dielectric Phenomena - CEIDP. IEEE Press 2013 ISBN 978-1-4799-2597-1. p. 651-654
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14 Davari, Nazanin; Åstrand, Per-Olof; Unge, Mikael; Lundgaard, Lars Esben; Linhjell, Dag.
Field-Dependent Ionization Potentials and Excitation Energies of Molecules of Relevance for Electrically Insulating Liquids. 2013 Annual Report Conference on Electrical Insulation and Dielectric Phenomena; 2013-10-20 - 2013-10-23
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15 Linhjell, Dag; Ingebrigtsen, Stian; Lundgaard, Lars Esben; Unge, Michael.
Positive Breakdown Streamers and Acceleration in a Small Point-Plane Liquid Gap and Their Variation with Liquid Properties. I: Proceedings of the 23rd Nordic Insulation Symposium - NORDI-IS13. Akademika forlag 2013 ISBN 978-82-321-0274-7. p. 191-196
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16 Nguyen, Dung Van; Høidalen, Hans Kristian; Linhjell, Dag; Lundgaard, Lars Esben; Unge, Michael.
Effects of reduced pressure and additives on streamers in white oil in long point-plane gap. Journal of Physics D: Applied Physics 2013 ;Volume 46.(25)
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17 Nguyen, Dung Van; Høidalen, Hans Kristian; Linhjell, Dag; Lundgaard, Lars Esben; Unge, Michael.
Influence of impurities and additives on negative streamers in paraffinic model oil. IEEE transactions on dielectrics and electrical insulation 2013 ;Volume 20.(3) p. 876-886
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18 Nguyen, Dung Van; Høidalen, Hans Kristian; Linhjell, Dag; Lundgaard, Lars Esben; Unge, Michael.
Streamer Propagation in a Long Gap in Model Liquids. I: Proceedings of the 23rd Nordic Insulation Symposium - NORDI-IS13. Akademika forlag 2013 ISBN 978-82-321-0274-7. p. 89-93
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19 Unge, Mikael; Singha, Santanu; Nguyen, Dung Van; Linhjell, Dag; Ingebrigtsen, Stian; Lundgaard, Lars Esben.
Enhancements in the lightning impulse breakdown characteristics of natural ester dielectric liquids. Applied Physics Letters 2013 ;Volume 102.(17)
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2012
20 Nguyen, Dung Van; Høidalen, Hans Kristian; Linhjell, Dag; Lundgaard, Lars Esben; Unge, M..
A Study on Positive Streamer Channels in Marcol Oil. I: Annual Report Conference on Electrical Insulation and Dielectric Phenomena (CEIDP), 2012. IEEE conference proceedings 2012 ISBN 978-1-4673-1253-0. p. 365-370
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21 Nguyen, Dung Van; Høidalen, Hans Kristian; Linhjell, Dag; Lundgaard, Lars Esben; Unge, Michael.
Influence of impurities and additives on positive streamers in paraffinic model oil. IEEE transactions on dielectrics and electrical insulation 2012 ;Volume 19.(5) p. 1593-1603
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2011
22 Lesaint, Cedric Michel; Magnusson, Helene Konstansia; Spets, Øyvind; Simon, Sebastien Charles; Hannisdal, Andreas; Lundgaard, Lars Esben; Linhjell, Dag; Sjøblom, Johan.
Analysis of Crude Oils by Frequency Domain SpectroscopyEffect of Composition and Physical Properties on Conductivity and Dielectric Response. Journal of Dispersion Science and Technology 2011 ;Volume 32.(6) p. 874-880
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23 Linhjell, Dag; Ingebrigtsen, Stian; Lundgaard, Lars Esben; Unge, Mikael.
Streamers in long point-plane gaps in cyclohexane with and without additives under step voltage. Proceedings of IEEE International Conference on Dielectric Liquids 2011
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24 Linhjell, Dag; Lundgaard, Lars Esben; Selsbak, Cecilie Mørk.
Temperature-dependent contamination distribution between oil, paper and pressboard. Proceedings of IEEE International Conference on Dielectric Liquids 2011
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25 Nguyen, Dung Van; Mauseth, Frank; Høidalen, Hans Kristian; Linhjell, Dag; Ingebrigtsen, Stian; Lundgaard, Lars Esben; Unge, Michael.
Streamers in large paraffinic oil gap. Proceedings of IEEE International Conference on Dielectric Liquids 2011
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2010
26 Hestad, Øystein Leif; Lundgaard, Lars Esben; Linhjell, Dag.
New experimental system for the study of the effect of temperature and liquid to solid transition on streamers in dielectric liquids: Application to cyclohexane. IEEE transactions on dielectrics and electrical insulation 2010 ;Volume 17.(3) p. 764-774
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2007
27 Linhjell, Dag; Lundgaard, Lars Esben.
Dielectric response of mineral oil impregnated cellulose and the impact of aging. IEEE transactions on dielectrics and electrical insulation 2007 ;Volume 14.(1) p. 156-169
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2005
28 Linhjell, Dag; Lundgaard, Lars Esben.
Dielectric response of oil-impregnated paper and pressboard. I: Proceedings of the 19th Nordic Insulation symposium. Tapir Akademisk Forlag 2005 ISBN 8251920558.
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29 Lundgaard, Lars Esben; Hansen, Walter; Linhjell, Dag.
Ageing of kraft and thermally upgraded oil impregnated paper. I: Proceedings of the 19th Nordic Insulation symposium. Tapir Akademisk Forlag 2005 ISBN 8251920558.
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2004
30 Lundgaard, Lars Esben; Hansen, Walter; Linhjell, Dag; Painter, Terence John.
Ageing of oil-impregnated paper in Power transformers. IEEE Transactions on Power Delivery 2004 ;Volume 19.(1) p. 230-239
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2001
31 Lundgaard, Lars Esben; Linhjell, Dag; Berg, Gunnar.
Streamer/leaders from a metallic particle between parallel plane electrodes in transformer oil. IEEE transactions on dielectrics and electrical insulation 2001 ;Volume 8.(6) p. 1054-1063
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1999
32 Linhjell, Dag; Berg, Gunnar; Lundgaard, Lars Esben.
Streamers from a metallic particle between parallel plane electrodes in transformer oil. I: Proceedings of 1999 IEEE 13th International Conference on Dielectric Liquids - ICDL'99. IEEE conference proceedings 1999 ISBN 0-7803-4759-5.
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1998
33 Lundgaard, Lars Esben; Linhjell, Dag; Berg, Gunnar; Sigmond, Reidar Svein.
Propagation of positive and negative streamers in oil gaps with and without pressboard interfaces. IEEE transactions on dielectrics and electrical insulation 1998 ;Volume 5.(3) p. 388-395
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1996
34 Lundgaard, Lars Esben; Linhjell, Dag; Berg, Gunnar; Sigmond, Reidar Svein.
Positive and negative streamers in oil gaps with and without pressboard interfaces. I: 12th International Conference on Conduction and Breakdown in Dielectric Liquids 1996 - ICDL'96. IEEE conference proceedings 1996 ISBN 0-7803-3560-0. p. 175-180
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1994
35 Linhjell, Dag; Lundgaard, Lars Esben; Berg, Gunnar.
Streamer propagation under impulse voltage in long point-plane oil gaps. IEEE transactions on dielectrics and electrical insulation 1994 ;Volume 1.(3) p. 447-458
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1993
36 Linhjell, Dag; Berg, Gunnar; Lundgaard, Lars Esben.
Streamer propagation in long point-plane oil gaps. I: Proceedings of 1993 IEEE 11th International Conference on Conduction and Breakdown in Dielectric Liquids -ICDL'93. IEEE conference proceedings 1993 ISBN 0-7803-0791-7. p. 268-273
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