Following news that Siemens handed over the High Voltage Direct Current (HVDC) offshore grid connection SylWin1 to TenneT yesterday, Prysmian Group announced that it has successfully commissioned the project in a contract with TenneT.
Prysmian secured this project in January 2011 as part of overall contracts awarded to consortium between the Group and Siemens Energy for the grid connection of offshore wind farms to the mainland.
The project marks a series of significant milestones, being the highest ever rated system for VSC technology, with a power rating of 864 MW, operating at the highest commercially available voltage level of ± 320 kV DC and employing an extruded cable connection along a total route of approximately 205 km (160 km offshore and 45 km onshore).
SylWin1 uses extruded HVDC cable technology from Prysmian together with Siemens HVDC Plus® converter technology at the offshore platform and onshore stations.
Prysmian Group has also installed the 155 kV HVAC submarine cables which connect the converter platforms to the respective individual offshore wind farm transformer platforms.
SylWin1 is the third grid connection to be handed over this year following the BorWin2 and HelWin1 projects commissioned in late January and early February, respectively; another DC offshore grid connection, HelWin2, is also near completion.
Prysmian is also currently implementing the HVDC cable systems for the DolWin3 and BorWin3 projects.
Image: Siemens