What should one consider when measuring the wind (speed and direction) at a mast?
When analysing wind data what should one look for?
Orography
Explain the concept of orography and its influence on the wind speed including the effects of (a) terrain elevation above sea level, (b) the smoothness / sharpness of hills and mountain tops and (c) orientation of mountain ridges relative to the wind direction.
What is flow separation, at approximately what slopes does it occur, and how would WAsP predict wind speed in cases where flow separation occurs?
Explain the RIX concept, its background, interpretation and use.
Roughness
What is roughness?
What is an internal boundary layer?
Describe the roughness classes and the effect of roughness.
Obstacles
Describe the effect of obstacles, including any special considerations.
Wakes
What is a wind turbine wake and the effect of it on the production of a wind farm?
General
Describe the wind atlas methodology.
Describe the WAsP similarity principle.
How is the annual energy production calculated?
Describe the possible inaccuracies in a WAsP calculation.
