ZX Lidars supports power performance testing at Galloper

4C Offshore | Tom Russell
By: 12/07/2021 ZX Lidars
RWE has confirmed the commencement of Power Performance Testing on its turbines at the Galloper offshore wind farm, using the nacelle-based lidar ‘ZX TM’ from ZX Lidars (formerly ZephIR Lidar).

ZX TM allows the power curve of wind turbines to be measured and verified as a function of the Hub Height wind speed  as described in the IEC61400-12-1:2017 (ed. 1/ed. 2).

ZX TM allows the power curve of wind turbines to be measured and verified as a function of the Hub Height wind speed and replaces the need for using a meteorological mast and anemometry installation, according to IEC61400-12-1:2017 (ed. 1/ed. 2).

ZX Lidars stated that its lidar system allows operational rotor equivalent power curves to be measured with its 50 points around the full rotor swept area. This is particularly important for turbines with larger rotor diameters offshore and on sites with complex veer or shear profiles.

In October 2020, Siemens Gamesa approved the use of the nacelle based Continuous Wave scanning Lidar ‘ZX TM’ from ZX Lidars for Power Performance Testing.

Galloper is a 353 MW offshore wind farm located in the Outer Thames estuary, 30 km off the coast of Suffolk. First power was generated in November 2017, with full generation following in March 2018. The project features 56 SWT-6.0-154 wind turbines and is expected to power over 250,000 homes annually. It is owned by RWE, Siemens Financial Services, Sumitomo Corporation and ESB and a consortium managed by Green Investment Group and Macquarie Infrastructure and Real Assets.

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