Posters
Come meet the poster presenters to ask them questions and discuss their work
We would like to invite you to come and see the posters at our upcoming conference. The posters will showcase a diverse range of research topics, and will give delegates an opportunity to engage with the authors and learn more about their work. Whether you are a seasoned researcher or simply curious about the latest developments in your field, we believe that the posters will offer something of interest to everyone. So please join us at the conference and take advantage of this opportunity to learn and engage with your peers in the academic community. We look forward to seeing you there!
PO184: WindCal2: A new way of calibrating wind sensors
Paula Gómez, Head of section Testing and Calibration, DTU
Abstract
Participants will learn about the WindCal2 project and its innovative method to calibrate wind measurements, without using cup anemometers, obtaining a substantial measurement uncertainty reduction, and with a faster, repeatable, automated process. It achieves a goal long-sought by wind industry: obtaining lidar measurement uncertainty lower than conventional cup anemometers. WindCal2 is the beginning of the second generation of wind speed calibrations, where high accuracy lidars replace older technologies such as cup anemometers. The project has developed, and demonstrated, a new method for calibrating nacelle-mounted lidars, which are used to verify the performance of modern wind turbines, especially offshore. The new method is much more accurate and significantly faster than present methods. This significant improvement in calibration accuracy was achieved by replacing the cup anemometer by highly accurate lidars ("lidics") as the calibration reference wind speed measurement. The lidic accuracy builds on a flywheel calibration method developed in another research project. Additionally, the nacelle lidar calibration process was automated by using a modern, robot-like motion device. This innovation allows both an automatic measurement of the angles between the nacelle lidar laser beams and also switching quickly between the beams in the wind speed calibration process. This work presents the main concepts developed in this project and the results of the demonstration campaigns. A first demonstration campaign was conducted where the nacelle lidar was mounted on a motion device and the nacelle lidar was calibrated against a "standard reference", i.e. cup anemometer mounted on a meteorological mast. A second demonstration campaign was carried out, where the nacelle lidar was installed in a static position, but this time calibrated against the 2D-lidic instead of a cup anemometer. WindCal2 is a project sponsored by the Danish Energy Technology Development and Demonstration Programme (EUDP) with project partners Ørsted, Siemens Gamesa Renewable Energy, Vaisala and DTU.
