COBRAcable back in operation

By: Rameeza Haq Duggal

In: CablesInterconnectors

09/01/2021

TenneT

The 700 MW COBRAcable is planned to be back in operation today (8th January 2021), after approximate 105 days of downtime. The HVDC cable has been out of operation due to a failure since the end of September.

The cable operator, TenneT, had mobilized a team at sea to carry out cable repair as soon as possible. The fault was investigated through a special equipment where a tone or a pulse is sent through the cable to find the exact location of the defect. Initially, it was suspected that the fault had occured in the onshore part of the cable but later it was detected in the submarine cable.

The cabl e was cut at a depth of 40 metres on the seabed and lifted. On both sides of the cut cable, the cable was measured 200 meters long to find the exact fault location. The piece of cable where the fault has been located was removed. A new piece has been installed and reconnected to the cable.

In the last couple of days, the cable has been successfully tested and laid back, buried two meters deep in the seabed. The connection will be able to transport electricity between Denmark and the Netherlands from today.

The COBRAcable is a 320 kV HVDC connection between the Netherlands and Denmark. The 325 km long cable is jointly owned by Energinet.dk and TenneT.

This story was first reported exclusively for 4C Offshore subscribers. For more information, click here.
For more information on interconnector projects worldwide, click here

login to improve information access

There are three levels of access, Free, Freemium (requires a sign-up – for free – and password access) and “Full” (Password access).
You need Full access to use the ForeSEE interactive system, access reports, updates, notes, news and downloads. Sign up now!

Back to News

Trending News!

Polish utility signs Ocean Winds agreement

Wednesday, 30 December 2020

New Jersey Governor reveals $250 Million offshore wind investment plans

Wednesday, 23 December 2020

Hornsea Project One's transmission assets worth over £1 billion

Friday, 08 January 2021

submit your news