Abstract
Vindeby Offshore Wind Farm, the worlds first commercial offshore wind farm, was commissioned in 1991. It is situated in the Great Belt, Denmark, a couple of kilometres NW of the island of Lolland. The offshore wind farm, build by SEAS, has a capacity of 4.95 MW and consists of 11 Bonus 450 kW stall controlled wind turbines in two parallel rows from NW to SE. According to SEAS, the cables (or power lines) interconnecting the 11 turbines and connecting the offshore wind farm to the shore are all 10 kV tripolar, 50 Hz alternating current cables. The turbines are founded in conical “Gravitation Foundations” built in concrete and filled with sand and gravel. The distance between the turbines is approx. 500 meters. The water depth in the turbine area varies from 2-6 meters. For a map of the wind turbine area, wind turbines and cables, Figure 2, page 15.