Successful commissioning of HelWin2 HVDC grid connection

Categories: Corporate

Contract was awarded to Prysmian Group by the Dutch-German grid operator TenneT

Milan   -   06/22/2015

"We are proud to deliver on time such a highly strategic project for the German power grid" says Massimo Battaini, SVP Energy Projects at Prysmian Group

Contract was awarded to Prysmian Group by the Dutch-German grid operator TenneT

It is the fourth project to be handed over in 6 months

Milan, 22 June 2015. Prysmian Group, world leader in the energy and telecom cable systems industry, announces the successful commissioning of the High Voltage Direct Current (HVDC) offshore grid connection project HelWin2 realised off the North Sea coast of Germany in a contract with the Dutch-German transmission system operator TenneT.

Prysmian secured this project in July 2011 as one of several contracts awarded to consortia between the Group and Siemens Energy for the grid connection of offshore wind farms to the mainland. “We are proud to deliver on time such a highly strategic project for the German power grid” says Massimo Battaini, SVP Energy Project at Prysmian Group. “The Prysmian/Siemens consortium is the first to complete such a German offshore grid connection within the agreed timeframe”, he added.

HelWin2 now links the offshore wind park Amrumbank West with a 690 MW cable connection operating at the highest commercially available voltage of ± 320 kV DC, along a total route of 130 km (85 km submarine and 45 km land) to the mainland Germany land converter station in Büttel, north-west of Hamburg and is ready to start commercial operations.

HelWin2 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 platform HelWin Beta to the respective individual offshore wind farm transformer platforms.

In addition, HelWin Beta has been connected to the neighbouring platform HelWin Alpha by ways of Prysmian’s Feltoflex HV 155 kV, a new generation of high voltage, rubber insulated cable systems that combine the Group’s extensive expertise in MV heavy duty cable systems with the specific application requirements for mobile interconnections between 2 platforms into a full turn-key ultra-flexible cable system easy to lay even in the harshest climate conditions.

The completion and hand-over of this important project re-affirms the Group’s continued successful relationship with TenneT who have awarded Prysmian the submarine and land cable systems for a total of six HVDC grid connection projects in recent years. HelWin2 is the fourth grid connection to be handed over this year following the BorWin2, HelWin1 and SylWin1 projects commissioned in late January, early February and late April, respectively. Prysmian is currently implementing also the HVDC cable systems for the DolWin3 and BorWin3 projects.

Over the last years the Group has continued to develop a wide range of state-of-the-art products and technologies for the renewable energies sector. These latest achievements underline the Group’s pre-eminent role in the development of HVDC cable transmission systems and its leading position in the commercial application of HVDC cable technology.

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Prysmian Group
Prysmian Group is world leader in the energy and telecom cable systems industry. With more than 130 years of experience, sales of nearly €7 billion in 2014, some 19,000 employees across 50 countries and 89 plants, the Group is strongly positioned in high-tech markets and offers the widest possible range of products, services, technologies and know-how. It operates in the businesses of underground and submarine cables and systems for power transmission and distribution, of special cables for applications in many different industries and of medium and low voltage cables for the construction and infrastructure sectors. For the telecommunications industry, the Group manufactures cables and accessories for voice, video and data transmission, offering a comprehensive range of optical fibres, optical and copper cables and connectivity systems. Prysmian is a public company, listed on the Italian Stock Exchange in the FTSE MIB index.