Power Curve

So is, for instance, the power curve an important prerequisite for the preparation of dependable energy production predictions and for the calculation of reference energy productions corresponding to the Renewable Energy Sources Act – EEG.

Moreover, the manufacturer can optimize the turbine type precisely by means of measurements of the power performance and the owner receives information if the turbine possesses the guaranteed power and production characteristics.

The determination of the power performance of wind turbines offered by WIND-consult is based on valid national and international standards and guidelines:

• IEC 61400-12-1 „Power performance measurement of electricity producing wind turbines“
• MEASNET “Power performance measurement procedure”
• Technische Richtlinie für Windenergieanlagen FGW, Teil 2: “Bestimmung von Leistungskurve und standardisierten Energieerträgen”
• Technische Richtlinie für Windenergieanlagen FGW, Teil 5: “Bestimmung und Anwendung des Referenzertrages”
• Danish guideline (Risø-I-745 (EN))
• Dutch guideline (ECN-217)

WIND-consult carries out measurements of the power performance of wind turbines according to the quality criteria of MEASNET and FGW (conformity seal) and is listed for measurements according to the Danish guideline in Denmark.

For the determination of the wind speed at hub height of the wind turbine a meteorological measuring mast is erected at the site. A data logger records the meteorological quantities of wind speed, wind direction, air temperature, air pressure and precipitation as well as the systems parameters active power and status. The used anemometers are calibrated in the wind tunnel according to the MEASNET guideline and all other sensors are adjusted with DAkkS-calibrated reference devices. Likewise a calibration of all inputs of the data logger with DAkkS-calibrated signal transmitters is carried out.