How the actual wind power is calculated using wind speed and turbine data based on the Weibull probability distribution?
1) One way is to use the 1/2*rho*A*V^3*cp formula to calculate the wind power based on the wind speed (V), air density (rho), rotor area (A), Betz limit (cp) of the turbine.
2) Another way is to use the wind-power curve based on the cut-in, cut-out, rated velocity and rated turbine power.
I have read in some papers that they have directly multiplied the Weibull probability with the actual power calculated using any of the above 2 ways to calculate the actual wind power.
So is it the correct way to include the Weibull probability of wind power???
My another concern is that, what is the forecasted wind power and how we get this???
Is actual Wind power with Weibull Probability always less than the forecasted wind power??
As I am new to this area, so I am bit confused.
Kindly suggest and guide me as I require the wind power for generation scheduling.....
Dear Prateek
I didn't know how familiar are you to wind power and your real purpose. but i have added a word file that's contain of some brief explanations and formulas to earn power from Weibull parameters and knowing the Weibull acuracy.
Be successful.
Dear Prateek
I didn't know how familiar you are to wind power and your real purpose. But I have wrote a word file that is contain of some brief explanations and formulas to attain wind power from Weibull parameters and the accuracy of Weibull curve.
Be successful.
You have to determine the average (or meant) wind speed through out the year by plotting the wind distribution. Usually it follow the Weibull probability. Ofcourse it is less than the forecasted wind power.
Thank You Farzaneh Gholami & S.I.s. Hassan......
Actually I need to perform hourly scheduling for wind-thermal coordination over 24 hours scheduling time horizon.
I have 24 hours wind speed data with 1 hour time interval. Using these wind speeds, i need to calculate hourly wind power considering Weibull probability.
How is the forecasted wind power calculated???
Is it possible to forecast your wind power by having 24 hours data ? The wind speed varies day by day. We need one year data and obtain Weibull probability distribution.
Using wind speed data from weather records for a sufficiently long period to yield a representative average, cube all of the wind speeds up to the limit of the turbine, then average the cubes of all wind speeds up to the limit of the turbine, then take the cube root of this average and multiply by the fraction of the time that the wind speed is below the limit of the turbine. This will yield the root-mean-cube average wind speed that can be used in 1/2 rho A V^3 formula.
Dear Mr Singhal,If you are interested to read on this subject,,I just to refer to study titled,"Wind Energy for Rural and Remote Areas in the ESCWA Region". You can download it from my publications on Research-gate.I hope you will find some information which may help answering your questin.
Read this
https://www.researchgate.net/publication/258835771_Decision_making_under_uncertainty_in_energy_systems_State_of_the_art
Article Decision making under uncertainty in energy systems: State of the art
read this
Renewable Energy 32 (2007) 1999–2010
Evaluation of monthly capacity factor
of WECS using chronological and probabilistic
wind speed data: A case study of Taiwan
Tsang-Jung Changa,, Yi-Long Tua,b
aDepartment of Bioenvironmental Systems Engineering, National Taiwan University, Taipei 106, Taiwan
bJen-Teh Junior College of Medicine, Nursing and Management, Miaoli 356, Taiwan
Received 24 July 2006; accepted 18 October 2006
Available online 12 December 2006
Please PhD thesis work more on wind power
http://www.iitd.ac.in/sites/default/files/phd/2008IDZ8398.pdf
May be useful.
http://drømstørre.dk/wp-content/wind/miller/windpower%20web/en/tour/wres/pow/index.htm
Thank you all experts for your valuable suggestions and advice.
My paper defines the true power of wind, all other models miss the key point. Betz is only partially correct. The secret is in the Pitot tube......
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