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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 ;Volum 4.
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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 ;Volum 4.
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4 Tveten, Erlend Grytli; Lundgaard, Lars Esben.
FastTrans: Reducing the Impact of Repetitive Voltage Pulses on HV Components.
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2019
5 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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6 Lundgaard, Lars Esben.
CIGRE Work on Impregnated Insulation Systems for Transformers. IEEE Electrical Insulation Magazine 2019 ;Volum 35.(6) s. 3-4
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7 Lundgaard, Lars Esben; Martins, M.A.; Martin, R.; Prevost, Thomas; Lessard, M.C.; Dreier, L.; Jian, L.; van Peteghem, J.; Lesaint, Cedric Michel; Bauchemin, C.; Pagger, E.; Jalbert, J.; Meltzer, L.; Atanasova-Höhlein, Ivanka; Perrier, C..
Ageing of liquid impregnated cellulose for power transformers. CIGRE (International Council on Large Electric Systems) 2019 (ISBN 978-2-85873-440-5) 92 s. CIGRE Technical Brochure(738)
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2018
8 Eberg, Espen; Ese, Marit-Helen Glomm; Lundgaard, Lars Esben.
Nytt superutstyr. Energiteknikk [Fagblad] 2018-10-01
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2017
9 Aakre, Torstein Grav; Lundgaard, Lars Esben; Unge, Mikael.
Time to breakdown studies for liquids of different physico-chemical nature. I: 2017 IEEE 19th International Conference on Dielectric Liquids - ICDL. IEEE conference proceedings 2017 ISBN 978-1-5090-4877-9.
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10 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. s. -
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11 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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12 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
13 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 ;Volum 23.(4) s. 2303-2310
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14 Abdelmalik, Abdelghaffar Amoka; Nysveen, Arne; Lundgaard, Lars Esben.
Partial discharges in liquid embedded power electronics: Effects of pressure and liquid nature under negative pulse voltage stress. IEEE transactions on dielectrics and electrical insulation 2016 ;Volum 23.(2) s. 1119-1125
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15 Fløystad, Jostein Bø; Pedersen, Atle; Mo, Olve; Hoidalen, Hans Kristian; Lundgaard, Lars Esben.
Risk and mitigation of geomagnetically induced currents in the power system : status report. Trondheim: SINTEF Energi AS 2016 (ISBN 978-82-594-3658-0) 26 s. SINTEF Energi. Rapport(TR A7574)
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16 Lesaint, Cedric Michel; Berg, Gunnar; Lundgaard, Lars Esben; Ese, Marit-Helen Glomm.
A novel bench size model coalescer: Dehydration efficiency of AC fields on water-in-crude-oil emulsions. IEEE transactions on dielectrics and electrical insulation 2016 ;Volum 23.(4) s. 2015-2020
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17 Liland, Knut Brede; Lesaint, Cedric Michel; Lundgaard, Lars Esben; Hernes, Magnar; Glomm, Wilhelm.
Liquid insulation of IGBT modules: Long term chemical compatibility and high voltage endurance testing. I: Proceedings of the 2016 IEEE International Conference on Dielectrics, 3-7 July 2016, University of Montpellier, France : ICD 2016. IEEE conference proceedings 2016 ISBN 978-1-5090-2804-7.
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18 Lundgaard, Lars Esben; Munkejord, Svend Tollak; Reboud, Jean-Luc; Lesaint, Cedric Michel; Ervik, Åsmund; Ese, Marit-Helen Glomm.
Electrocoalescence III : staus and summary report from activities. Trondheim: SINTEF Energi AS 2016 (ISBN 978-82-594-3768-6) 34 s. SINTEF Energi. Rapport(TR A7597)
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2015
19 Abdelmalik, Abdelghaffar Amoka; Nysveen, Arne; Lundgaard, Lars Esben.
Influence of fast rise voltage and pressure on partial discharges in liquid embedded power electronics. IEEE transactions on dielectrics and electrical insulation 2015 ;Volum 22.(5) s. 2770-2779
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20 Hellesø, Svein Magne; Atten, Pierre; Berg, Gunnar; Lundgaard, Lars Esben.
Experimental study of electrocoalescence of water drops in crude oil using near-infrared camera. Experiments in Fluids 2015 ;Volum 56.(122)
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21 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 s. SINTEF Energi. Rapport(TR A7099)
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2014
22 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 ;Volum 4.(3)
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23 Grav, Torstein; Lundgaard, Lars Esben.
Currents in AC stressed liquid insulated needle plane gap. I: 2014 IEEE 18th International Conference on Dielectric Liquids ICDL. Curran Associates, Inc. 2014 ISBN 9781479920655.
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24 Grav, Torstein; Lundgaard, Lars Esben.
PD occurrence in liquids in ac stressed needle plane gap. I: 2014 IEEE 18th International Conference on Dielectric Liquids ICDL. Curran Associates, Inc. 2014 ISBN 9781479920655.
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25 Hestad, Øystein Leif; Grav, Torstein; Lundgaard, Lars Esben; Ingebrigtsen, Stian; Unge, M.; Hjortstam, O..
Numerical simulation of positive streamer propagation in cyclohexane. I: 2014 IEEE 18th International Conference on Dielectric Liquids ICDL. Curran Associates, Inc. 2014 ISBN 9781479920655.
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26 Lesaint, Cedric Michel; Babault, Celine; Liland, Knut Brede; Lundgaard, Lars Esben.
Absorption of water in silicon gel. I: 2014 IEEE 18th International Conference on Dielectric Liquids ICDL. Curran Associates, Inc. 2014 ISBN 9781479920655.
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27 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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28 Tønseth, Svein; Lundgaard, Lars Esben; Nordhagen, Håkon Ottar.
Vil hindre trafo-smell. Gemini [Internett] 2014-10-16
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29 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
30 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. s. 651-654
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31 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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32 Lesaint, Cedric Michel; Simon, Sebastien Charles; Lesaint, Caterina; Glomm, Wilhelm; Berg, Gunnar; Lundgaard, Lars Esben; Sjøblom, Johan.
Dielectric Properties of Asphaltene Solutions: Solvency Effect on Conductivity. Energy & Fuels 2013 ;Volum 27.(1) s. 75-81
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33 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. s. 191-196
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34 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 ;Volum 46.(25)
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35 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 ;Volum 20.(3) s. 876-886
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36 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. s. 89-93
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37 Schichler, U; Koltunowicz, W; Endo, F; Feser, K; Giboulet, A; Girodet, A; Hama, H; Hampton, B; Kranz, H-G; Lopez-Roldan, J; Lundgaard, Lars Esben; Meijer, S; Neumann, C; Okabe, S.; Pearson, J; Pietsch, R; Riechert, U; Tenbohlen, S.
Risk Assessment on Defects in GIS Based on PD Diagnostics. IEEE transactions on dielectrics and electrical insulation 2013 ;Volum 20.(6) s. 2165-2172
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38 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 ;Volum 102.(17)
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2012
39 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. s. 365-370
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40 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 ;Volum 19.(5) s. 1593-1603
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2011
41 Guillaume, Christian; Gaudin, Christophe; Faremo, Hallvard; Pirovano, Giovanni; Lundgaard, Lars Esben; Panella, Laura; Wetzer, Jos; Aranguiz, Guillermo Allende.
Outcome of SmartLife : a European coordination action in asset management of T&D networks. CIRED Conference Proceedings 2011
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42 Hestad, Øystein Leif; Lundgaard, Lars Esben; Åstrand, Per-Olof.
n-tridecane as a model system for polyethylene: comparison of pre-breakdown phenomena in liquid and solid phase stressed by a fast transient. IEEE transactions on dielectrics and electrical insulation 2011 ;Volum 18.(6) s. 1929-1946
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43 Hestad, Øystein Leif; Smalø, Hans Sverre; Åstrand, Per-Olof; Ingebrigtsen, Stian; Lundgaard, Lars Esben.
Effects of N,N-dimethylaniline and trichloroethene on prebreakdown phenomena in liquid and solid n-tridecane. IEEE transactions on dielectrics and electrical insulation 2011 ;Volum 18.(6) s. 1886-1896
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44 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 ;Volum 32.(6) s. 874-880
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45 Liland, Knut Brede; Ese, Marit-Helen; Selsbak, Cecilie Mørk; Lundgaard, Lars Esben.
Ageing of Oil Impregnated Thermally Upgraded Papers : Oxidation and Hydrolysis. Proceedings of IEEE International Conference on Dielectric Liquids 2011
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46 Liland, Knut Brede; Kes, Murside; Ese, Marit-Helen; Lundgaard, Lars Esben; Christensen, Bjørn Erik.
Study of Oxidation and Hydrolysis of Oil Impregnated Paper Insulation for Transformers using a Microcalorimeter. IEEE transactions on dielectrics and electrical insulation 2011 ;Volum 18.(6) s. 2059-2068
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47 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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48 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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49 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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50 Susa, Dejan; Liland, Knut Brede; Lundgaard, Lars Esben.
On-line assessment of power transformer ageing accelerators. Proceedings of IEEE International Conference on Dielectric Liquids 2011
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