All Technology Relations for Offshore windfarm Baltic 2 Design and consultancy services
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Offshore windfarm Baltic 2 Design and consultancy services
Solution type: Implemented
Ramboll Energy has been awarded the contract concerning the detailed design of 39 monopile foundations for the Baltic 2 Offshore Wind Farm.
The wind farm is located in the German Exclusive Economic Zone close to the border of Denmark and Sweden in the southern part of the Baltic Sea, about 30 kilometres from the German coastline at the Island of Rügen.
80 turbines, including 39 with monopile foundations
The overall project includes the design, installation and commissioning of the Offshore Wind Farm Baltic 2 comprising 80 turbine foundations, of which 41 are planned to be jacket foundations and 39 are planned to be monopile foundations. The split in different foundations concepts is due to the big variation in water depth across the site.
The actual wind turbine type to be installed at the site is the Siemens Wind Power SWT-3.6-120, and the total capacity for the wind farm is 288 MW.
Technical Specifications
Complex organisation
The site is being developed by EnBW and WPD. The joint venture HOCHTIEF/Geosee/Nordsee Nassbagger is EPC contractor and responsible for the design, installation and commissioning of all 80 WTG foundations. HOCHTIEF Solutions AG, as part of the joint venture, is designing the jacket foundations and has subcontracted the design of the monopile foundations to Ramboll Energy's Offshore Wind division.
Since it is a German project, the design has to be approved by the German Authorities, Bundesamt Für Seeschiffarht und Hydrographie BSH. Furthermore the design has to be certified by Germanischer Lloyd (GL), who is appointed by EnBW.
Because of the complex organisation of the project, it is going to be challenge to accommodate the schedule when many parties are involved and dependent of each other.
Design challenges
The foundations will be installed at water depths between 23m and 44m wrt. LAT. The monopile foundations will be used for water depths between 23m and 35m, and it will be a challenge for the engineers to design feasible monopiles which can withstand the huge offshore Siemens turbine with a rotor diameter of 120m. In the Baltic Sea also presence of ice has to be accounted for in the design.
http://blog.ramboll.com/urbanenergysolutions
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