Following hard on its record BorWin2 contract award in combination with Siemens, Prysmian has been awarded a project worth in excess of €150 million by the German transmission system operator transpower for the grid connection project HelWin1 linking two offshore wind farms in the North Sea to mainland Germany.
Prysmian will supply, instal and commission the submarine and land cable connections as part of a larger contract worth approximately a half billion euros, awarded to the consortium of Prysmian and Siemens Energy. Siemens will deliver the VSC, with a rating of 576 MW. The turnkey connection will first link the offshore wind park Nord See Ost, located about 85 km offshore, to the mainland German grid.
As with the recently awarded and technically groundbreakingBorWin2 project, worth more than € 200 million to Prysmian, the HelWin1 connection will use extruded HVDC cable technology from Prysmian, together with Siemens HVDC Plus converter technology at the offshore platform and onshore stations. The HVDC connection of approximately 130 km will consist of subsea and land cable at a voltage of ± 250 kV DC along a 85 km sea route passing to the east of Helgoland and continuing along a 45 km land route to the converter station at Büttel, NW of Hamburg. Extruded 155 kV HVAC submarine cable connections will complete the connections from the offshore wind park transformer platforms to the offshore converter platform.
Manufacturing will commence in 2011 with installatio scheduled for 2011 to 2012. Commencement of operation is planned for 2013.
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