NKT Repairs Subsea Power Cables between Norway and Denmark


October 22, 2020
Credit: NKT

Credit: NKT

Offshore cable specialist NKT has completed the repair of two power cables Skagerrak 1 and 2 between Norway and Denmark, and the cables are now back in operation.

The national power grids between Denmark and Norway are connected through four HVDC-links crossing the Skagerrak strait with the capability to carry 1700 MW of energy between the two countries. 

When the Skagerrak 1 and 2 were damaged, the Norwegian grid operator Statnett awarded NKT the order for the cable repair of the 250 kV MI-insulated HVDC power cables. The operation was completed by mid-October.

Cut-and-seal operation and deburial were carried out by Statnett. NKT performed all other repair activities. 

A third-party construction vessel – Olympic Zeus – was converted into a cable repair vessel by mobilizing NKT’s Cable Handling System. Additionally, NKT delivered the repair joint kits, performed the jointing, and cable burial.

"Time and accuracy are crucial for the success of power cable service operations to minimize the downtime of the cable connections essential for the exchange of energy between countries. Once again, we demonstrate that we are quick and efficient when mobilizing our skilled repair team and with our pool of pre-engineered vessels, we have one of the shortest mobilization times in the industry," says Axel Barnekow Widmark, Executive Vice President and Head of Service in NKT.

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