FaLang Language Switcher

Reducing costs for power curve measurements: Site calibration performed with LiDAR

Utrecht/Lelystad, The Netherlands, 10 November 2015 – For the first time ever, LiDARs were used for a site calibration in preparation of IEC-compliant power curve certification measurements for a wind turbine prototype. Stand-alone LiDARs have been used for years to assess the wind resource for project development. The technology has global recognition within the wind energy industry and the adoption of LiDARs for IEC-compliant power curve measurements is scheduled to be included in the new revision of the IEC 61400-12-1. Normally, a site calibration is executed using two identical met masts. The use of two LiDARs opens up opportunities to reduce project time-line, complexity, and costs, whilst ensuring the integrity and quality of the final deliverable.

The project was executed in preparation of the certification measurements for the new DW61-900 kW wind turbine by Emergya Wind Technologies (EWT), a product which builds on EWT’s market leading position in the distributed wind sector. Ecofys WTTS from the Netherlands together with its accredited partner windtest grevenbroich GmbH from Germany, conducted the site calibration using two WindCube-V2 LiDARs. The site calibration showed that the site is suitable for certification measurements by validating an appropriate measurable sector. The measurement campaign and subsequent LiDAR verification were approved by the certification body.

This project underlines that LiDAR technology has further matured and that LiDARs can deliver data according to IEC quality standards. The project also shows that Ecofys WTTS and windtest grevenbroich GmbH bring innovative and smart solutions to leading and innovative clients.

Windcube V2 LiDAR [Source Ecofys WTTS] EWT DW61-900 kW at Test Site Lelystad (Courtesy of Emergya Wind Technologies B.V.)