Landskapets påverkan på vinden : sett ur ett vindkraftperspektiv

This is a bachelor thesis written at Lund University in cooperation with E.ON Vind Sverige AB. The thesis is a study that investigates how the surrounding landscape affects the wind climate at a specific site. The wind data used comes from three different met masts situated in the ocean, on plain land and in woodland respectively. The wind analysis is based on five parameters: turbulence intensity, the wind shear, wind direction, wind frequency distribution and extreme winds. These are considered as the most important wind factors to analyse when planning a new park of wind turbines. All analysis is made in Microsoft Excel and WindPro 9.2. The result confirms that plain land and oceans, that this far has been the dominant environment for wind turbines, still can be considered as the most suitable. Here it is easy and safe to calculate the wind speed at different heights and here is the turbulence intensity low. To build wind turbines in woodland is a relatively new idea. The winds here have lower energy content and very high turbulence intensity. The investigations concerning woodlands suitability for wind turbines are ongoing and are an important question for most of the big energy producing companies in Sweden. Most of the results suite well with the wind theory presented. In those cases when the results are not representative this is above all due to the placements of the met masts.