Scandinavian wind farm optimisation
Many Scandinavian wind farms face a number of challenges including high levels of turbulence and wind shear from surrounding forestry and the impact of blade icing, and this wind farm was no different, experiencing these effects also. The owner approached SgurrEnergy to deliver SgurrOptimiser services to the wind farm.
Client: Confidential
Location: Scandinavia
Capacity: Confidential
Service: SgurrOptimisation – forestry restructuring
To measure the wind inflow at the site, a Galion Lidar was deployed for four months, using different scan modes to measure effects of the forestry and validate the nacelle measurement data. Once the data gathered was analysed, SgurrEnergy carried out modelling simulations identifying how forestry restructuring could enhance the performance of the wind farm. Taking the regulatory constraints of forestry sustainability into consideration, SgurrEnergy presented the findings to the wind farm owner and forest owner to provide the optimal commercial benefit to both parties.
The Galion Lidar also assessed the accuracy of wind speed measuring at nacelle height. The data gathered was compared with the data available from the manufacturer and the findings delivered to the client and original equipment manufacturer (OEM).
Analysis was carried out to determine the cause of the irregular behaviour in the power curves that was particularly prevalent on four wind turbines generators (WTG). Icing was identified as the cause of the irregularity using SgurrControl expertise. Modifying the controller software on these four WTGs could mitigate the icing losses, generating an increase in annual energy yield of up to 6%.
Further gains of between 1% and 2% could be achieved if additional control improvements were implemented across the whole wind farm.
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