When it was set up back in 2000, Middelgrunden was the world’s largest offshore wind farm. The plant can be easily seen from Denmark’s capital. Its presence bears testimony of how important wind power is in the country that broke the world record for wind energy in 2016, for the second year in a row.
Middelgrunden is approximately four kilometres off Copenhagen.The 20 turbines (of 2 megawatts each) give the plant a nameplate capacity of 40 megawatts, thus enabling the farm to deliver about 4% of Copenhagen’s power requirements.
LM Wind Power, a pioneer in offshore wind, delivered the blades for the wind turbines. The company is partner of WINDTRUST, a European project that aims to reduce the cost of wind energy generation by further improving the reliability of key components of the turbine.
Offshore wind turbines play an important role in renewable power generation. The energy production is higher than from onshore wind turbines, because of stronger winds and lower wind turbulence due to them being free of all obstacles like buildings, hills or mountains.
The harsh offshore environment with heavy rain causes the blades to erode, leading to a significant reduction in wind turbine efficiency and energy production. The blades lose mass, the aerodynamic flow is disturbed and the energy production is reduced.
LM Wind Power has developed under Windtrust an innovative polyurethane coating system to face the erosion issue and increases the performance of blades, while lowering the costs of maintenance and downtime. They claim that the new protection lasts around five times longer than the industry standard.
Credits: LM WIND POWER