Wind resources at Horns Rev

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energy. environment. knowledge. Page 4 of 69 1. Site and data assessment 1.1 Site description The meteorological mast at Horns Rev is located approximately 20 km west of Blåvands Huk. Its position is 7°47,217'E 55°31,208'N (WGS84) and its UTM coordinates are 423.412E 6.153.342N (WGS84 Zone 32). The location of the mast is shown in Figure 1.1. The distances to the nearest shore (fetch distances) are given in Figure 1.3. Figure 1.1 Location of met mast at Horns Rev, west of Jutland 1.2 Description of measurements system A square lattice mast was erected on a monopile close to the projected wind farm site at Horns Rev. In mid-May 1999 the meteorological measurement programme was initiated and later, in June 1999, the marine measurement programme started. The measuring system comprises a total of five independent systems: 1. Primary meteorological system (10 min). 2. Back-up meteorological system (10 min). 3. Sonic meteorological system (20 Hz). 4. Wave height measuring system. 5. Current and water level measuring system. 1.2.1 Primary meteorological system In 1999 the mast at Horns Rev was instrumented with the system shown in Figure 1.2. The data acquisition (DAQ) system is capable of collecting and storing statistical values Report no.: D-160949 Tech-wise A/S is an international consulting Tech-wise A/S engineering company specialised Kraftværksvej 53 in energy and environment DK-7000 Fredericia
energy. environment. knowledge. Page 5 of 69 from the meteorological instruments. The meteorological measurements introduced in May 1999 include four-level wind speeds as well as wind directions, temperatures, atmospheric pressure, solar radiation and lightning detection. The four measurement levels are 62, 45, 30 and 15 m above DNN (Danish Normal Zero). Wind speed measurements are performed with Risoe Cup Anemometers. They have been used worldwide during the last 20 years by meteorological institutes, scientific laboratories, research laboratories, and industry. For the wind direction measurements ED wind direction sensors are used. This type of wind direction sensor is used worldwide at wind farms, airports, and meteorological stations. These sensors are highly suited for saline environments featuring high wind speeds and wide temperature ranges. Statistical values from the primary met system are sent to an onshore database once an hour, and shown on a local web page: http;//212.130.241.250/hornsrev. Report no.: D-160949 Tech-wise A/S is an international consulting Tech-wise A/S engineering company specialised Kraftværksvej 53 in energy and environment DK-7000 Fredericia
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Wind resources at Horns Rev

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