Electricity production hours: time during the statistical period during which wind energy production is converted to full load, i.e. total electricity production divided by nominal installed capacity of the wind turbine. \x0d\ Effective Wind Hours: The cumulative running time of the fan between the starting wind speed and the starting wind speed during the statistical period. \x0d\ Starting wind speed refers to the wind speed that reaches the grid connection condition, which is the lowest wind speed that can produce electricity. If the wind speed is lower than this, it will automatically stop. The starting speed is related to the aerodynamic performance of the fan blades. When the cut-in wind speed is reached, the generator can produce electricity continuously and stably. \x0d\\x0d\ The cutoff wind speedrefers to the maximum wind speed at which the wind turbine is connected to the grid to produce electricity. If the wind speed exceeds this speed, the unit will be cut off from the grid, causing the grid to shut down. means that the wind turbine will shut down and stop producing electricity. The cutoff wind speed is not only related to the blades, but also to the unit load. If the cut-off wind speed is reached but not cut off, there may be risks of tower collapse, turbine overspeed, etc. accidents.
1. Calculate the force exerted on each blade of the wind turbine: we know that the length of each blade of the Vista wind turbine is 44 meters, the air density is 1.225 kg/m3 and the wind speed is 11 .4 m/s. According to the Bates formula, the thrust on each blade is the power F = (1/2) ρV2S, where ρ is the air density, V is the wind speed, and S is the blade area.
2. Calculate the total force exerted on the wind turbine: The wind turbine has three blades, so the total force is three times greater than the force exerted on a single blade. Fenjiu 3. Calculate the output power of the wind turbine: Knowing the total force of the wind turbine and the transmission ratio of the wind turbine gearbox, the output power of the wind turbine can be calculated.