DIS delivers electrical design for the foundations for Vattenfall’s new offshore wind farms.

                                     

Denmark was the first country in the world to build offshore wind farms, and development has grown significantly since the first installation in 1991. DIS will provide the electrical design for 113 foundations for the energy company Vattenfall’s next three offshore wind farms in Denmark, Vesterhav Nord and Vesterhav Syd in the North Sea, and Kriegers Flak in the Baltic Sea.

 

- We see DIS as highly competent within electrical systems. They have demonstrated that they know what they are doing on previous projects. So when Vattenfall had to evaluate the offers received from five different consulting companies, who all have existing framework agreements with Vattenfall, it was not difficult to award DIS with a high score in qualifications and reference projects, says Nilas Mandrup Hansen, Civil Design Manager at Vattenfall.

 

A complete electrical design
For the electrical design for the foundations, the electrical and automation department at DIS has developed panel design and specifications, cable lists and complete electrical schematic and wiring diagrams. Illumination analysis, to ensure compliance with applicable standards and regulations. Lightning report of LPZ-zones of the design. Design and specification of overvoltage protection. Short-circuit calculations, cable routing and cable cross section drawings as well as earthing and bonding design. Concurrently, the mechanical department has been responsible for the design of mounting brackets, 3D design of electrical panels as well as installation layouts for plug connections, and finally DIS has made the layout drawings of the electrical equipment installed in the foundations.

 

- We have experienced a very successful collaboration. We did not feel we worked with an external partner on this task. This was largely due to the close cooperation between Vattenfall’s Electrical Design Manager and the DIS project organization, who performed the tasks. DIS understood how major projects are run and that as a consultant you must be very flexible when planning tasks. Despite changes to both schedules and the design assumptions, DIS demonstrated great professionalism in terms of quality and project management, concludes Nilas Mandrup Hansen.

 

The three new offshore wind farms are expected to be ready for operation in 2020. They will be among the largest offshore wind farms in Denmark and will have the capacity to deliver sustainable electricity to approx. 980.000 Danish households.
DIS also provided Vattenfall with information and calculations for the tender materials when Vattenfall submitted and subsequently won the project for the three offshore wind farms.

ABOUT VATTENFALL

Vattenfall is a leading European energy company, that for more than 100 years has electrified industries and supplied energy to people's homes. Vattenfall want to make fossil-free living possible within one generation by investments in sustainable energy systems and through growth in the production of renewable and climate-smart energy solutions. There are approx. 20.000 employees (including 250 in Denmark) operating in Sweden, Germany, the Netherlands, Denmark, the UK, France and Finland. Vattenfall is owned by the Swedish state. Vattenfall is Denmark's largest developer of onshore and offshore wind power projects.

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