MVAC XLPE Cables for MVDC – DC Conductivity of Plaque Samples During Temperature Changes

Research output: Contribution to conferencePaperpeer-review


The rising demand for electric energy poses increasing
challenges for the distribution grid. To overcome these
challenges, direct current (DC) transmission will play a
dominant role in the medium voltage (MV) level. On the
one hand, MV alternating current (AC) cable systems can
be converted into MVDC cable systems and, on the other
hand, new MVDC cable systems can be implemented
into the existing grid.
However, MVDC cables with extruded insulation show
special phenomena (e.g. space charges). Due to the
interest in characteristics of this insulation this paper
provides information about the DC conductivity of XLPE
plaque samples during steady thermal and electric stress
and during temperature changes. The plaque samples are
extracted from 12/20 kV MVAC XLPE cables. The DC
conductivities at steady state and during temperature
changes are presented in a temperature range from
25 °C – 90 °C and an electrical stress up to 30 kV/mm.
Original languageEnglish
Number of pages6
Publication statusPublished - 14 Jun 2022
Event27th Nordic Insulation Symposium - Trondheim, Norway
Duration: 13 Jun 202215 Jun 2022


Conference27th Nordic Insulation Symposium


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