Nkt Hv Cables Ab

Ola Thyrvin

Andreas Tyrberg

Håkan Sandell

Andreas Persberg

Vilhelm Rydén

The invention is concerned with a method, arrangement, computer program and computer program product for estimating the thermal resistivity of soil surrounding an underground cable. The arrangement comprises a thermal resistivity estimating unit that obtains a first temperature (T) from a first temperature sensor at an exterior surface of the cable, obtains a second temperature (T) from a second temperature sensor placed in the soil at a distance from the cable, obtains a measurement of current (I) transmitted in the cable and estimates the thermal resistivity of soil based on the first and the second temperatures (T, T) as well as on the current measurement (I).

Estimating the thermal resisitivity of soil surrounding an underground cable

A static AC submarine power cable configured for at least 72 kV operation including: a power core including: a conductor, an insulation system surrounding the conductor, and a smooth metallic water-blocking sheath surrounding the insulation system, wherein the metallic water-blocking sheath includes stainless steel.

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Karlskrona, Sweden

Ola Thyrvin