The first is to predict the wind speed first.
The first is to predict the wind speed first, and then obtain the corresponding wind power through the conversion of the power characteristic curve. The second is to collect various historical data required for power prediction, such as wind speed, wind direction, temperature, etc., and establish a mathematical model to reflect the relationship between these data and wind power power.
Wind power refers to the actual energy of wind energy acting on the wind blades. The power emitted by the generator is less than it because there is an efficiency problem in the conversion process. Wind power density is the wind energy of airflow vertically passing through unit cross-sectional area in unit time.
Analysis: Assume the wind turbine power P, air density p, rotor radius r, wind speed v, pi ratio Π, and energy utilization coefficient k
The area of the circle swept by the rotor when rotating is S= Π r^2
The volume of air passing through area S per second: V=Sv
The mass of air passing through area S per second: m=pV=pSv
The kinetic energy of air passing through area S per second: E=mv^2/2=pSv*v^2/2=pSv^3/2=p*Πr^2v^3/2=Πpr^2v^3 /2
Wind turbine power P=k*E=Πkpr^2v^3/2 (a three-blade design is generally used for wind speeds of 5m/s, and the k value is generally between 0.30-0.50)