Nacelle based LIDAR for performance verification
The objective of the project has been to develop and commercialize nacelle-LIDAR technology for power performance verifications such that the expensive and often difficult use of met masts offshore and in complex terrain is avoided.
We will develop and demonstrate testing procedures that show that the use of a nacelle-based LIDAR is a valid and even better alternative than the traditional mast based performance testing. Testing of wind turbines will be more cost efficient and more accurate, as required by the Danish wind industry, and this results in better and cheaper wind turbines and cheaper electricity, which again increases competitiveness of wind energy and reduces CO2 emissions. Objectives will be met partly by developing LIDAR measurement procedures on a wind turbine installed at the Høvsøre test site in connection with a met mast and a ground based LIDAR, and partly by demonstrating the developed procedures on an offshore wind turbine, where the results will be compared with a commercial third party standard power performance verification
The goal for the project has been to develop and commercialize a nacelle – based LIDAR – technology for verification of efficiency curves on wind mills by testing the wind mills. The laser-based LIADR-technology can measure the speed and direction of the wind, thus the expensive and difficult metrological masts both offshore and in difficult terrain can be avoided.
The results of the project shows that nacelle-based LIDAR can replace measuring masts and by doing this you’ll archive a saving both in buying, installing and re-movement of the masts and also time in approval and building will be saved.
The LIDAR-technology thus gives the opportunity for a reduction on the el-prices from the wind mills because of fewer costs in testing the mills and by measuring the efficiency of the mills in connection with the approval and contract related verification of their performance.
The opportunities for using LIDAR-technology in the control system of the wind mills will furthermore reduce the price on wind mill produced energy. Loads on the wings and the tower can be reduced when the LIDAR-technology predicts things like changes in the wind, speed and direction. On long terms the LIDAR-technology can help the wind mill prices at a reduction of 5 % due to the increased energy production.
Key figures
Category
Dokumenter
Participants
| Partner | Subsidy | Auto financing |
|---|---|---|
| Ørsted A/S | 1,03 mio. DKK | |
| Leosphere (FR) | 1,12 mio. DKK | |
| Danmarks Tekniske Universitet (DTU) | 2,85 mio. DKK | 0,50 mio. DKK |
| Siemens A/S | 0,64 mio. DKK |
Contact
Danmarks Tekniske Universitet. Risø Nationallaboratoriet for Bæredygtig Energi (Risø DTU). Afdelingen for Vindenergi
Frederiksborgvej 399, Bygning 118
DK-4000 Roskilde
www.risoe.dtu.dk
Friis Pedersen, Troels , 46775042, trpe@risoe.dtu.dk
Øvr. Partnere: Siemens Wind Power A/S; DONG Energy; Leosphere SAS
