Wind resources at Horns Rev

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Figure 1.11 Example of data from wind speed sensor at level 58 m, Back-up met system
10-min. mean values
1.4.4 Sonic system
The sonic system shows very low data coverage because of problems with the sensors,
data transmission from the sensor to the storage unit, low power capacity from the
batteries, data storage on a lap top, and - of course - the access to the met mast. The
maintenance visits to the met mast are very expensive, and therefore failures of the
sonic system are not been repaired until next scheduled maintenance visit, or until
several systems need maintenance.
2. Statistics
To give an overview of the wind records compiled from May 1999 to November 2002
at Horns Rev, this section evaluates the main characteristics of the data.
2.1 Wind speed and turbulence
Main statistical values for the measuring period:
Table 2.1. Main statistical 10-min mean values data, May 1999 to November 2002
Height 62 45 30 15
Mean Wind Speed [m/s]
Max. Wind Speed [m/s]
Mean Wind Direction [º]
Mean Turbulence Intensity [-]
Weibull Scale Parameter [m/s]
Weibull Shape Parameter [-]
Wind Shear (to nearest)
9.46
45.4
254
0.079
10.59
2.3
0.16
8.85
43.1
254
0.09
10.05
2.3
0.10
8.51
40.7
254
0.092
9.64
2.3
0.10
7.89
39.5
-
0.107
8.98
2.2
-
Report no.: D-160949
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