The annual profit of the 200,000 kilowatt and 6.25 megawatt wind farm is 80%. The average profit in the wind industry is 80%. The purchase of wind power is profitable and the profit rate is not low, but the initial investment is relatively large. A 1 MW photovoltaic plant generates 1,000 kWh per hour, calculated based on 1,000 hours of available light resources per year, the annual electricity production. or approximately 1 million kWh. The investment and construction cost of a 1 MW photovoltaic power plant is 4.8 million yuan. The grid electricity price per kilowatt hour without subsidies is 0.3949 yuan. The total annual income is 394,900 yuan, excluding operation and maintenance costs, staff salaries and bank interest. , The profit is about 50%. One megawatt of wind power generates 1,000 kilowatt hours per hour, and the electricity generation is at least 7.68 millions of kilowatt hours 320 days a year, not including the salaries of operation and maintenance personnel, the profit is more than 60%.
How many kilowatt hours does a five megawatt wind power plant produce per year?
The largest is 5 MW, available in Denmark and one in China. Generally, 2 MW, 1.5 MW or less 0.8 MW are used in China.
Formula for calculating electrical power: P=W/t =UI.
In a purely resistive circuit, according to Ohm's law U=IR and substituted by P=UI, we can also obtain: P=I2R=(U2)/R.
In dynamics: Power calculation formula: P=W/t (average power); P=Fvcosα (instantaneous power).
Detailed information
When the wind turbine produces electricity, it must ensure that the output frequency is constant. This is very necessary for both grid-connected wind power generation and wind-solar hybrid power generation.ire. ?
To ensure that the frequency of wind power is constant, one solution is to ensure a constant speed of the generator, that is, a constant speed and constant frequency operating mode , because the generator is driven by the generator. wind turbine through the transmission device, this method undoubtedly requires a constant speed of the wind turbine, which will affect the wind energy conversion efficiency.
Another way is to change the speed of the generator according to the wind speed and ensure that the frequency of the output electrical energy is constant by other means, i.e. i.e. constant frequency and variable speed operation. The wind energy utilization coefficient of the wind turbine is related to the blade tip speed ratio (the ratio of the linear speed of the turbine tip to the wind speed). There is a certain speed ratio of poblade inte which causes Cp to reach the maximum value.
Baidu Encyclopedia - Wind Turbine
The annual power generation capacity of 5 MW is approximately 7 million kilowatt hours. The installed capacity is 5 megawatts, or 5,000 kilowatts, and the electricity production per hour is 5,000 kilowatt hours, or 5,000 kilowatt hours. Taking into account the influence of geographical location, sunlight intensity and overall weather conditions, the annual usage life of photovoltaics is approximately 1,400 hours, so when multiplied it is 7 million kilowatt hours.