The ratio between the total electricity production of a wind farm during a certain period divided by the product of the number of hours during that period and the installed capacity of the power plant. (Expressed as a percentage)
Taking a certain month as an example, a generator set with a gross capacity of 300 MW has an electricity production of 120 million kilowatt hours, an operating time of 436 hours and a monthly statistical time consumption of 720 hours, then The equivalent operating hours in gross capacity are:
(12000÷436)/30×436=400 (hours)
The gross capacity coefficient is:
400/720*100=55.56
The ratio between the hours of annual effective use of the wind farm and the number of hours throughout the year, or the ratio between the actual duration of use of the wind farm and the annual electricity connected to the grid to the nominal annual electricity connected to the grid. (Exprime in percentage)
The process of converting installed wind capacity into electricity production is as follows:
Electricity production = installed wind capacity × wind turbine working hours
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Example:
A wind power plant with an installed capacity of 200 MW has a total working hours of 2,000 hours per year, its capacity of electricity production is therefore: 200 MW*2000=400,000 MW. That is to say, the wind power plant can produce 400 million kWh of electricity per year.