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Vestas V112 fire investigation continues
Credit: James Quilter, Windpower Monthly, www.windpowermonthly.com 12 April 2012 ~~
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GERMANY: Vestas has said it is conducting an ongoing investigation into the failure of its latest V112 turbine and has shut down a number of similar machines.
The fire, which destroyed the turbine, occurred at the 51MW Gross Eilstorf wind farm in Lower Saxony, Germany. Vestas was handed a 17-turbine deal for the project at the end of 2010.
In a statement, Vestas said it is still inspecting the nacelle via drone aircraft and a crane and modelling possible causes. It has yet to discover the cause although the turbine was operating normally before the incident occurred.
It said it had paused other V112s with a similar configuration to the turbine involved in the incident, but that these are being returned to operation. Upgrades, including new software, have been added.
The V112-3.0MW flagship prototype is arguably Vestas’s most important product since the lightweight V90-3.0MW turbine was introduced in 2003.
The turbine marks a return to traditional drive technology for Vestas. While its predecessor, the V90-3.0MW, had introduced a compact integrated drive system, with the new V112 Vestas returns to conventional wind technology, but offering a 55% larger rotor-swept area.
Its technical features include a non-integrated drive system, a permanent magnet generator and a passive liquid-cooling system.
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