After BorWin2 comes HelWin1

Thursday, 12 February, 2015 - 11:15
Prysmian was in charge of the cable work for the grid connections HelWin1 and BorWin2. (Photo: Prysmian)
Prysmian was in charge of the cable work for the grid connections HelWin1 and BorWin2. (Photo: Prysmian)

A few days after the handover of the BorWin2 grid connection, Siemens has now handed another cluster connection over to TenneT. The HelWin1 grid connection has a capacity of 576 MW and is now ready to be used by the offshore wind farms Nordsee Ost and Meerwind Süd/Ost.

Siemens has handed over another offshore grid connection, HelWin1, and can now cross it off the list. The link connects the HelWin alpha converter platform, which is located 85 km north-west of the island of Helgoland, with the mainland via an HVDC connection. A total of 576 MW offshore wind power can be channelled through this grid connection. It will be used by the two offshore wind farms Nordsee Ost and Meerwind Süd/Ost. Wind turbines with a capacity of approximately 260 MW are already connected.

Siemens just handed over the 800 MW grid connection BorWin2 to TenneT in January. "This year, we completed and delivered the world's first two offshore grid connections in this performance class that use efficient DC technology. In a few months, we will be putting the next two projects into commercial operation, as scheduled," says Jan Mrosik, CEO of the Energy Management Division at Siemens.

Siemens collaborated with the cable manufacturer Prysmian on both BorWin2 and HelWin1. The converter platform HelWin alpha was connected to the German mainland via a 130-km HVDC connection (85 km underwater and 45 km on land) that has a capacity of approximately 250 kV DC. BorWin2 has an even longer connection of 200 km (125 km underwater and 75 km on land) with the highest transmission capacity (800 MW) as well as the highest DC voltage level (± 300 kV DC) worldwide. Both BorWin2 and HelWin1 use Prysmian's extruded HVDC cable technology together with Siemens' HVDC Plus converter technology on the offshore platforms as well as at the land-based stations.

Katharina Garus

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