Advice Archives

Archive for the ‘Wind Monitoring’ Category

Wind Speed Measurement: Anemometers

Posted on: December 3rd, 2011

The measurement of wind speeds is usually done using a cup anemometer, such as the one in the picture to the left. The cup anemometer has a vertical axis and three cups which capture the wind. The number of revolutions …]
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Instrumentation

Posted on: December 3rd, 2011

Sensors:
A crucial factor for precise measuring is the correct choice of sensors. For wind measurement, only anemometers according to IEC 61400 – recommended: category – should be used. The anemometers must be calibrated by a specialised institute in accordance with national …]
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Weibull Distribution

Posted on: December 3rd, 2011

The General Pattern of Wind Speed Variations
It is very important for the wind industry to be able to describe the variation of wind speeds. Turbine designers need the information to optimise the design of their turbines, so as to minimise …]
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Advice on Wind Monitoring

Posted on: November 24th, 2011

Wind Monitoring
It is essential to measure the wind speed as near to the hub height of the proposed turbine as possible.  If ‘best practice’ of a hub height mast is not followed, then a reasonable compromise is to ensure that …]
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The Wind Rose

Posted on: March 4th, 2009

The Wind Rose
You will notice that strong winds usually come from a particular direction. To show the information about the distributions of wind speeds, and the frequency of the varying wind directions, one may draw a so-called wind rose on the …]
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