Environmental Engineering Reference
In-Depth Information
One of the turbines is fi tted with a complete measurement system to record external
conditions and structural response. A picture of the turbines and the measurement
systems is shown in Fig. 9.
The measurements were used to validate the current design tools for offshore wind
turbines. It was found that present-day tools are very able to model the offshore wind
turbine behaviour induced by wind and waves simulations. Figure 10 shows the
comparison of measured and modelled mudline bending moment per wind speed.
It was found that offshore wind turbine design is very dependent on site-specifi c
features like the wind and wave climate. At Blyth the local bathymetry is such that
Outboard (one blade)
Blade Root (all blades)
Tower Height 1
Tower Base
Mean Sea Level
Depth 1
Depth 2
Sea Bed
Foundation Depth 1
Foundation Depth 2
Figure 9: Turbines at Blyth with complete measurement system for external loads
and responses.
Figure 10 : Comparison of mudline bending moment form measurements and
modelling.
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