Wind speed and wind power density power generation

How is wind power density determined?

The Wind Power Density (WPD) was determined by measuring wind speed at the analyzed location and considering the air density. Wind speed data collected from the meteorological station at a height of 10 m was extrapolated to the turbine hub height (80 m) using the power law to account for altitude variations in wind speed.

What is the PDF of wind speed?

In engineering practice, the pdf of wind speeds is associated with the average wind turbine power P w ¯ according to the rule below P w ¯ = ∫ 0 ∞ P w (x) f (x) d x where f (x) is the pdf of wind speed x and P w (x) is the turbine power curve used to describe the power output from wind speed.

What is the energy ratio of a wind turbine?

vironmental conditions. Considering that energy is the product of its time-rate, that is, the power with the elapsed time, this energy ratio is equal the ratio of average power P to the nominal power of the system P . For a single wind turbine this nominal power i

Why is mean wind power density better than mean wind speed?

tory (NREL) of the USA. Mean wind power density has advantages over mean wind speed for comparing sites with different probability distribution skewness, because of the cubic nonlinear dependence of wind power on wind speed (see Fig. 11 in reference

Why is the probability density function of wind speed important?

Morgan et al. also stated that the probability density function (pdf) of wind speed was critically important in estimating energy production for wind turbine design and site planning.

How does wind speed affect the selection of wind turbines?

The fourth and fifth functions indicate that a wind speed larger than the mean wind speed has a significant impact. The selection of power curve g (v) has a significant impact on the chosen wind turbines. Given a certain power curve for all the wind turbines, the turbine JW1500 is selected for all of the four sites.