MILIA

Measurements from measuring masts and profiling lidars are currently used for yield prognoses and performance checks of wind turbines. However, the representativeness of these measuring systems is spatially limited. Furthermore, the determination of incident flow conditions at different wind farm sites by these established measurement methods is complex and associated with significant uncertainties. Scanning Lidars in a multi-lidar system offer an innovative way to determine wind conditions at different locations. These consist of two or more synchronized devices, which reach measurement ranges up to 8 kilometers. By crossing the measuring volumes of scanning lidars, virtual measuring masts can be realized. In principle, they allow the measurement of several sites in the planned or realized wind farm with a single measurement setup and could thus significantly complement or replace flow modeling.

So far, there is no evidence for the suitability of a multi scanning lidar system for yield prediction and site calibration. There is a deficit in the systematic approach and the quantification of measurement uncertainties. This proof of suitability as well as the required estimation of measurement uncertainty shall be provided in the MILIA project. The overall goal is to reduce uncertainties in the determination of wind potential and wind flow at complex sites. The technical prerequisites and procedures for using scanning lidars as virtual measuring masts are to be created.