|27 April 2020:|
Energinet and cable supplier take samples of faulty Skagerrak 4 cable
Published by Energinet 23 April 2020
Last year, there were three serious faults in the Danish section of the Skagerrak 4 (SK4) interconnection onshore cable. Therefore, samples will now be taken of the cable. Analyses will help to determine the cause(s) of the faults. The SK4 cable will be out of operation for approximately 10 weeks.
Last year, the five-year-old Skagerrak 4 interconnection (SK4), which is one of the interconnections linking the Danish and Norwegian electricity systems, saw three serious faults that made the cable inoperable for extended periods of time. On 6 February, 21 July and 9 October, respectively, sudden faults occurred, shutting down the connection completely. All three faults originated in the SK4 interconnection onshore cable in Denmark.
Energinet and the cable supplier will now dig down to the cable in several places on the section and take samples to find the cause(s) of the three faults. The cable will be cut through, and pieces will be examined by Energinet, by the cable supplier and by experts from an independent company. Sampling work will begin on 25 May and end on 28 July, and the SK4 interconnection will therefore be shut down and remain out of operation for the duration of this period.
Back at full capacity
CEO of Energinet's Electricity Transmission Henrik Riis emphasises that the SK4 connection will not only go back into operation, but will go back into operation at full capacity.