Assume that the fan blades are installed once every 60 seconds. A 1,500-kilowatt wind turbine generates 25 kilowatt-hours of electricity per revolution.
The calculation method is as follows:
The power generated by a 1500kW generator in one hour is 1500KWH, which is 1500 kilowatt-hours of electricity
1500 kilowatt-hours of electricity/hour ÷ 60 revolutions/hour = 25 kWh/circle.
Extended information:
A kilowatt hour is also called a kilowatt hour, which means that a 1 kilowatt generator generates 1 kilowatt hour of electricity for one hour.
Kilowatt (Kilowatt), an early unit of electrical power, now has a tendency to be extended to the unit of power in the entire field of physics. In electricity, kilowatt-hour is exactly the same as degree, but they have different names.
1 kilowatt = 1,000 watts (Watt) = 1000 joules (Joule)/second (Second).
1 kilowatt = 1,000 Newton meters per second (N m/s)
1 kilowatt = 0.239 kcal/s
1 kilowatt = 1.36 horsepower
A kilowatt-hour or kilowatt-hour (symbol: kW·h; often abbreviated to degrees) is a unit of energy measurement that represents the energy consumption of an appliance with a power of one kilowatt after one hour of use. energy consumed.
The unit "kilowatt hour" is mainly used to measure electricity, because "kilowatt hour" is easier for the public to understand than joules, and it is easier to convert into hours of electrical appliance use. On the other hand, the unit measurement of joule is too small compared to "kilowatt hour", making it difficult to calculate. In mainland China, some public institutions also use "megawatt hour" instead of "kilowatt hour" on their charge sheets. In Chinese, "kilowatt" is sometimes written as 瓩.
1kW·h = 3,600,000 joules = 3.6 million joules.
The physical meaning of 1 kilowatt hour is: the electrical energy consumed by an electrical appliance with a power of 1 kW for 1 hour of work (or the work done for 1 hour of work).
One kilowatt per hour is equal to:
3.599712×10 joules;
1.3596112 metric horsepower per hour;
1.3408927 imperial horsepower per hour hour;
8.599712023×10 kcal.
Baidu Encyclopedia - kilowatts
Baidu Encyclopedia - kilowatt hours
You need to know the relationship formula between the rated power of the wind turbine and the rated wind speed
The formula of the power curve is 0.5*A*p*Cp*V^3 A is the fan blade swept area,P is the air density, V is the wind speed, and Cp is the wind energy utilization rate. Cp is related to wind speed, wind wheel speed, and pitch angle. Generally, for fixed pitch and fixed wind speed conditions, Cp will first increase and then decrease with the speed
Wind turbine rated power: Assume wind speed v Air density ρ Generator fan blade radius R The air mass hitting the fan blade within t time is m=ρπR^2Vt, and the energy obtained by the fan blade is E=1/2mv^2=1/2ρπR^2V^3t
P0=E/t=1/2ρπR^2V^3
Suppose the generator efficiency η
The generated power of the wind turbine P=1/2ηρπR^2V^3