Projects

Check of the performance and in particular the yaw behaviour of wind turbines

Site: Small wind farm in the state of Bavaria, Germany Method: Wind measurement by Sodar Analysis of SCADA data of the wind turbines Results: The power curves as determined on the turbines are sufficiently in agreement with the warranted levels. However, improvements are possible. The yaw algorithm of one of the investigated turbines is far

Performance check of wind turbines

Site: medium size wind farm in Belgium Procedure: combination of analyses of SCADA data and a nearby wind measurement comparison to reanalyses data, met station data and aj production indices Results: inconsistencies related to the power curve could be detected in the past, including longer periods with reduced availabilities and a variety of curtailments more

Re-assessment of energy production

Site: medium size wind farm in Northern Germany; the real energy production is much lower than calculated in the original assessment report Procedure: profound analysis of SCADA data Results: reduction of the long term mean wind resource, albeit its contribution to the overall result is small compared to the following aspects thrust coefficients too low

Re-assessment of wake losses

Site: small wind farm in Germany; the client assumes distinctly higher wake losses than calculated in the original assessment report Procedure: profound analysis of SCADA data, adapted model calculations Results: the met station data used in the wind assessment report turned out to be less appropiate for the site, which is influenced by very local