INSIGHT 03 | 2015

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24 | Prysmian Group Insight
Prysmian successfully commissioned
the High Voltage Direct Current (HVDC)
offshore grid connection project off the
North Sea coast of Germany in a contract
withtheDutch-Germantransmissionsystem
operator TenneT. The project was initially
secured in January 2011 as part of overall
contracts awarded to consortia between
the Group and Siemens Energy for the grid
connection of offshore wind farms to the
mainland. SylWin1 links the offshore wind
parks DanTysk and Butendiek, followed by
Sandbank, located about 160 km offshore,
to mainland Germany passing to the
east of Helgoland and continuing along
a 45km land route to the land converter
station in Büttel, north-west of Hamburg.
The project marks a series of significant
milestones, being the highest-ever rated
system for VSC technology, with a power
rating of 864MW, operating at the highest
commercially available voltage level of
± 320kV DC and employing an extruded
cable connection along a total route of
approximately 205km, of which 160km is
offshore and 45km onshore.
The Group has also announced the
successful commissioning of another of
these projects – HelWin2. This project now
links the offshore wind park Amrumbank
West with a 690MW cable connection
operating at the highest commercially
available voltage of ± 320kV DC, along
a total route of 130km, of which 85km is
submarine and 45km land, to the Büttel
converter station.
by the Dutch-German
operator TenneT.
SylWin1,
a milestone HVDC connection
HelWin2,
a total route of 130 km
Offshore grid
connections
commissioned