Browsing SINTEF Open by Author "Solheim, Kristian Thinn"

Now showing items 1-15 of 15

    • AC Corrosion of Electrically Heated Pipelines 

      Solheim, Kristian Thinn; Høyer-Hansen, Martin; Lervik, Jens Kristian (ISOPE - International Offshore and Polar Engineering Conference. Proceedings;2017, Chapter; Peer reviewed, 2017)

    • AC Corrosion Tests of Carbon Steel, AlZnIn Anodes and 25Cr Duplex for Subsea Applications 

      Solheim, Kristian Thinn; Høyer-Hansen, Martin (Chapter; Peer reviewed, 2021)
      This paper presents results from AC corrosion tests on 25Cr duplex and cathodically protected carbon steel. The results show that the corrosion rate is independent of transfer current density (0-200 A/m2) and power frequency ...

    • AC Corrosion Tests on Materials for Electrically Heated Flowlines 

      Solheim, Kristian Thinn; Høyer-Hansen, Martin; Larsen, Magnus Hurlen; Iversen, Øyvind (ISOPE - International Offshore and Polar Engineering Conference. Proceedings;2018, Chapter; Peer reviewed, 2018)

    • Development of a web-based user-friendly cable ampacity calculation tool 

      Eberg, Espen; Espeland, Kåre; Hellesø, Svein Magne; Hvidsten, Sverre; Solheim, Kristian Thinn (Journal article; Peer reviewed, 2019)

    • Evaluation of simplified heat transport for power cables in pipes 

      Solheim, Kristian Thinn; Hellesø, Svein Magne; Eberg, Espen; Kantar, Emre (Chapter; Peer reviewed, 2023)
      Power cables in air- or water-filled pipes are the thermal bottleneck in many installations. Some parts of the industry reduce the complexity of their numerical models by combining conduction, convection, and surface-surface ...

    • Geomagnetic induced currents in long subsea power cables 

      Solheim, Kristian Thinn; Johnsen, Magnar Gullikstad (SINTEF Rapport;, Research report, 2022)
      This report focuses on geomagnetically induced currents (GIC) that can be induced in long subsea power cables. Literature indicates that the water depth itself, in which the cable will be laid, will not contribute to an ...

    • Geomagnetically induced currents in a Norwegian transformer station 

      Solheim, Kristian Thinn; Mo, Olve; Johnsen, Magnar Gullikstad (SINTEF Rapport;, Research report, 2022)
      This report considers measurements of geomagnetically induced current (GIC) and comparison to recorded variations in the geomagnetic field (dB/dt). The GIC-sensors were installed in the neutral point of a 420 kV transformer ...

    • How to Plug In the Fishing Fleet: Connectors in charging infrastructure for small fishing boats 

      Mehammer, Eirill Bachmann; Strand, Henrik; Magnusson, Niklas; Solheim, Kristian Thinn; Eberg, Espen (Peer reviewed; Journal article, 2023)
      Fishing fleets are targeted for electrification in many parts of the world. These vessels represent a large potential for emission reductions by transitioning from fossil to hybrid and electric propulsion. However, a massive ...

    • Internal pressures and pressure gradients in mass-impregnated HVDC cables during current cycling 

      Runde, Magne; Jonsson, Erik; Magnusson, Niklas; Solheim, Kristian Thinn (Peer reviewed; Journal article, 2020)
      The internal pressures in the insulation of two 5-m long pieces of a state-of-the art mass-impregnated non-draining subsea cable have been measured under load current cycling at ambient temperatures ranging from 3 to 37 ...

    • Next Generation Heating of Subsea Oil Production Pipelines 

      Lervik, Jens Kristian; Iversen, Øyvind; Solheim, Kristian Thinn (ISOPE - International Offshore and Polar Engineering Conference. Proceedings;2017, Chapter; Peer reviewed, 2017)

    • Operation track record and repair of direct electrical heating system 

      Solheim, Kristian Thinn; Lervik, Jens Kristian; Faremo, Hallvard; Klusmeier, Katharina Kuhlefelt; Willumsen, Christian Brede; Børnes, Atle Harald; Iversen, Øyvind (ISOPE - International Offshore and Polar Engineering Conference. Proceedings;34, Chapter; Peer reviewed, 2024)
      Direct electrical heating is a flow assurance method for subsea flowlines. This article considers direct electrically heated flowlines that were installed at an offshore facility in 2004. In 2022, one of the piggyback ...

    • Optimisation of power cable ampacity in offshore wind farm applications 

      Høyer-Hansen, Martin; Hellesø, Svein Magne; Solheim, Kristian Thinn; Mehammer, Eirill Bachmann; Eberg, Espen; Pedersen, Per Atle (Peer reviewed; Journal article, 2022)
      Inter-array power cables are used to connect wind turbines to the collector and export cable. In the transition from turbine tower to sea, the cable is installed in a J-tube, which has an unfavourable thermal environment ...

    • Optimizing Electrical Heating System of Subsea Oil Production Pipelines 

      Lervik, Jens Kristian; Iversen, Øivind; Solheim, Kristian Thinn (ISOPE - International Offshore and Polar Engineering Conference. Proceedings;2018, Chapter; Peer reviewed, 2018)
      Direct Electrical Heating (DEH) is a field-proven technology for hydrate and wax management of subsea production pipelines. DEH has been in use for nearly 20 years and is installed on approximately 30 pipelines/flowlines ...

    • Tiltak for å håndtere risiko og motvirke konsekvenser knyttet til geomagnetisk indusert strøm i kraftnettet 

      Mo, Olve; Solheim, Kristian Thinn (SINTEF Rapport;, Research report, 2021)
      I denne rapporten gis anbefalinger for tiltak som kan gjøres i det norske kraftnettet for å håndtere risiko og for å unngå havari og/eller utfall som følge av solstormer. Anbefalingene i rapporten bygger i stor grad på ...

    • Trace heating of wet insulated subsea flowlines 

      Solheim, Kristian Thinn; Høyer-Hansen, Martin (ISOPE - International Offshore and Polar Engineering Conference. Proceedings;33, Chapter; Peer reviewed, 2023)
      This article evaluates flow assurance by heat trace cables for wet insulated flowlines as an alternative to direct electrical heating or chemicals. Heat trace cables are attractive for their simple and flexible design and ...