Wind lidars are now used extensively for wind resource measurements. One of the requirements for the data to be accepted in support of project financing (so-called ‘banka-bility’) is to demonstrate the long-term stability of lidar cali-brations. Calibration results for six Leosphere WindCube li-dars are used examine this stability. Calibration results be-fore and after periods of field service are examined. No evi-dence of systematic drift is observed but some significant statistical variation is seen. We believe that much of the cal-ibration variation is due to differing environmental parame-ters pertaining in the different calibration periods. This is supported by sliding-window analyses of one lidar at one location where the same order of variation is observed as between pre-service and post-service calibrations.
|Publisher||DTU Wind Energy|
|Number of pages||37|
|Publication status||Published - 2014|
|Series||DTU Wind Energy E|
The original version of this report (July 2013) has been revised with the addition of pre and post calibration results from a second campaign and some extra analysis concerning the previously reported erratic behaviour of the sensing height error. This second and final version is dated January 2014.
- DTU Wind Energy E-0033
- DTU Wind Energy E-33