windpowerlib.wind_farm.WindFarm.mean_hub_height¶

WindFarm.mean_hub_height()[source]¶

Calculates the mean hub height of the wind farm.

The mean hub height of a wind farm is necessary for power output calculations with an aggregated wind farm power curve containing wind turbines with different hub heights. Hub heights of wind turbines with higher nominal power weigh more than others. After the calculations the mean hub height is assigned to the attribute hub_height.

Returns:: self
Return type:: WindFarm

Notes

The following equation is used [1]:

$h_{WF} = e^{\sum\limits_{k}{ln(h_{WT,k})} \frac{P_{N,k}}{\sum\limits_{k}{P_{N,k}}}}$

with:: $h_{WF}$ : mean hub height of wind farm, $h_{WT,k}$ : hub height of the k-th wind turbine of a wind farm, $P_{N,k}$ : nominal power of the k-th wind turbine

References