Wind Turbines on Windy Days

When it comes to wind turbines, which rely on wind to generate electricity,you can have too much of a good thing.

In the past few days hurricanes have swept through Scotland causing much damage. There are many wind turbines in Scotland and wind turbines cannot operate in hurricanes, because the wind speeds are too high, so turbines have system of preventing the turbine blades operating when wind speeds exceed a certain level, which is much lower than hurricane level and lower than gale force wind levels.

Generally wind turbines do not produce electricity in winds above the range of 40mph and 80 mph, (depending on their design) and have a device, usually electrical brakes, to prevent the blades turning when the wind exceeds the limit for that particular turbine.

In the wind one turbine in the Adrossian wind farm which is 100 metres high caught fire when hurricanes struck it, the blades had been stopped by the brakes, but clearly the force of the wind was so high that friction on the brakes was too much to cope with and the turbine burst into flames.

You can see a picture of this at http://www.clickgreen.org.uk/news/national-news/122919-huge-wind-turbine-erupts-in-flames-as-165mph-winds-strike-scotland.html

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