Wind Sector Management Optimization
The level of turbulence and the wind inflow angles can be increased or changed under certain conditions, i.e., actual pitch adjustment, operation downstream of another operating wind turbine, downstream of a building or another obstacle, downstream of a patch of trees, downstream of upwind terrain effects as slopes and ridgelines, etc.
Today the impact of this increased turbulence and wind inflow angles will normally be mitigated by having a wind sector management plan which is based on wind measurements on the wind farm sites and “imperfect” computer models and assumptions attempting to predict adverse turbulence loads on the individual wind turbines. Based on these computer models, the production output is reduced or the wind turbine is shut down at certain wind directions, to avoid negative effects. This measure is called "Wind sector management".
Reducing energy output or shutting down wind turbines obviously leads to a decrease in energy production.
We use nacelle-based LiDARs to measure and analyze the inflow turbulence and/or wind inflow angle conditions hitting the individual wind turbines across wind sectors. Based on these measurements we define a more optimal wind sector management plan as a function of wind direction and wind speed by only shutting down wind turbines when turbulence levels and/or wind inflow angle are above permissible limits.
This results in reduced loads on the turbines, improved power production and increased asset value.