Photo: Correll Services

Correll to back ZTT on German offshore wind farms

China’s Zhongtian Technology Submarine Cable (ZTT) has awarded Correll Services with contracts related to subsea cables at the Kaskasi II and Gode Wind 3 offshore wind projects in Germany.

Correll Services will provide platform cable routing, termination and testing of 155kV subsea cables for the AC grid connection systems on the two wind farms.

To remind, ZTT secured a contract at the end of last year to link the projects to HelWin beta and DolWin kappa converter platforms in the North Sea.

The cable systems will be produced at the company’s manufacturing base in Nantong and then transported to Europe, with the cable-laying operations to be carried out by the Greek subcontractor asso.subsea.

The first cable laying is planned for summer 2022 to connect the Kaskasi II project and the second one is expected to take place the following year for Gode Wind 3.

For Kaskasi II, two cable systems with a conductor cross-section of 630 square millimeters will be used to transmit 342MW via the five-kilometer long route between the wind farm’s transformer station and HelWin beta. Through the HelWin2 grid connection, the electricity is transported over 130 kilometers to the land station in Büttel in Schleswig-Holstein and fed into the extra-high voltage grid.

For Gode Wind 3, where work will be carried out in summer 2023, TenneT uses a three-phase cable with a conductor cross-section of 1,200 square millimeters the first time. The cable will transport the almost 242MW from the wind farm via just one cable system. The route, over 16 kilometers long, also runs through the operational Gode Wind 1 wind farm. Gode Wind 3 is connected to the extra-high voltage grid via DolWin kappa and the associated DolWin6 grid connection in Emden.