French turbine manufacturer Areva has brought in UK engineering consultancy SgurrEnergy to undertake a far-ranging wind measurement campaign at the Alpha Ventus offshore test field in the German North Sea.
The programme – claimed to be the “most comprehensive”
ever carried out in the industry – will deploy a trio of SgurrEnergy’s G4000
Offshore Galion Lidar devices on a 5MW Areva M5000-116.
They will simultaneously gather wind data at multiple
measurement points, to feed back detailed information on the resource before and
after it interacts with the turbine.
From the collected data, Areva expects to form a
detailed overview of the inflowing wind field conditions over the entire rotor
area, along with a better understanding of wake effects downstream of the turbine.
“This data, along with that collected by the turbine
itself, which Areva Wind has instrumented with high resolution sensors, will
produce a comprehensive picture, previously unattainable to the wind energy industry,
of inflowing wind and its influence throughout the structure of a turbine, from
blades to foundations,” says SgurrEnergy project manager Gordon Mina.
The project, which is designed to hone thinking on power
curve testing, wake modelling, rotor blade design, advanced condition
monitoring and wind farm design, is slated to run from three to six
Lidar technology uses pulses from lasers to ascertain wind speeds,
similar to the speed guns police employ to catch speeding motorists.
device can be installed on the transition piece or nacelle of a wind turbine to
measure the “free stream” wind at hub height to several rotor diameters as an alternative
to an offshore met mast.