Measurement data from the Krummendeich site

Countless sensors will collect measurement data in the research wind farm in the future. They will also be able to read the current weather conditions. The importance of wind speed in particular will play a crucial role for research.

Wind direction

, on hub height 100 m

Wind direction

The wind direction on the research wind farm is of essential importance. Unlike in conventional wind farms, the two wind turbines WTG 1 and WTG 2 are arranged in the prevailing main wind direction (240°, west-southwest).
Thus, the influence of the turbulent wake on the downstream wind turbine can be optimally investigated. The research results can be used to improve the control of wind turbines in the future in order to generate more energy.

Wind speed

150 m
120 m
90 m
60 m
30 m
0 m

Wind speed

The wind speed at the Krummendeich site is not constant everywhere. The wind speed distribution over the height depends on many factors. Especially on disturbing influences on the ground like houses or trees. The wind is slowed down considerably near the ground, depending on its nature. Usually, the wind speed is higher in higher layers than in lower layers. The higher a wind turbine is, the stronger the wind blows and the more electricity can be produced.

Power curve

At the current wind speed of , a common wind turbine would generate approximately of its maximum performance.
1 = Stop, 2 = Partial load, 3 = Full load, 4 = Storm shutdown

Power curve

The power curve describes the characteristic behavior of a wind turbine and the electrical power generated at the respective wind speed. Below the cut-in wind speed (usually in the range of 3 m/s or 11 km/h), the turbine is at a standstill. However, the rotor blades are not locked and idling. When the cut-in wind speed is reached, the rotor blades start to turn - the turbine operates is in the partial load range.
The stronger the wind blows; the more electricity is produced. When the rated wind speed is reached (usually in the range of 10 - 15 m/s or 40 - 50 km/h), the turbine generates its maximum power - it is in the full load range. If the wind now becomes stronger, the rotor blades are pitched out of the wind by the pitch system and the power remains constant. When the cut-out wind speed is reached during heavy storms (usually at 25 m/s or 90 km/h), the rotor blades are pitched completely out of the wind and the turbine stands still to prevent damage.

Relative humidity

Outside temperature

Data status: ,


Understanding weather conditions in Krummendeich

The data used here are based on the measurements of the LiDAR system and the microwave radiometer at the Krummendeich site. With the Long-Range Doppler Wind Lidar, vertical wind profiles or two-dimensional wind fields are measured and the wind speed, wind direction and turbulence are determined from them. The database created with the measurements is available to the research consortium in the long term and serves as a reference for the wind and turbulence conditions prior to the installation of the wind turbines.

You can find more information and further measurement data here.