Workshop 14 will focus on the use of nacelle mounted lidars for wind turbine power curve verification (PCV) in complex terrain.

A new standard (IEC 61400-50-3) for wind measurement using nacelle-mounted lidars is currently under development. This standard will describe the prescribed calibration procedure (LOS speed calibration), the sources of uncertainty to be accounted for and the measurement methodology highlighting specific requirements for nacelle mounted lidars (such as definition of measurement sector, correction for varying measurement height). However, the scope of this standard will be limited to applications in flat terrain or offshore.

We, therefore, propose to build evidence of application in complex terrain based on actual measurement campaigns. The objective of WS14 will be to present and discuss possible ways of using nacelle mounted lidars to fulfill the needs for a practical and reliable method for PCV in complex terrain. The primary objective will be to prepare a proposal for an addendum to IEC 61400-50-3 to extend the scope to moderately complex terrain (short term solution) including actual practice of the method or part of it. The secondary objective will be to discuss all possible methods and their challenges/needs for further development (long term solution).