Start-up wind speed and start-up wind speed in a wind farm, anyway, what are the values ​​of each wi

Introduction Start-up wind speed and start-up wind speed in a wind farm, anyway, what are the values ​​of each wind speed? Startup wind speed refers to the wind speed that can generate usable electrical energy in terms of grid connection, this is understandable.

Start-up wind speed and start-up wind speed in a wind farm, anyway, what are the values ​​of each wi

Startup wind speed refers to the wind speed that can generate usable electrical energy. In terms of grid connection, it can be understood as the wind speed that can be connected to the grid to generate electricity.

Starting the wind turbine can be a little annoying. Due to the influence of inertia and resistance, the wind turbine cannot start by itself when the wind speed reaches the speed that can drive it to produce electricity. Instead, it draws energy from the power grid to start the wind turbine depending on the situation, and then the wind speed can cause the wind turbine to produce electricity. So it's hard to say without knowing exactly what you mean by "starting wind speed." Because the starting wind speed also depends on the power of the wind turbine, but basically as long as it reaches wind level 2 and the wind speedexceeds 3 meters/second, it can start. Typically, the wind turbine reaches the grid at full load. -connected wind speed, that is, the optimal wind speed is generally 10. The range is about 13 M/S, which corresponds to level 6-7 wind speed. Usually, in strong winds, the IEC also states that the wind speed of the wind turbine can basically exceed the wind speed range of 12 or more (but I am not sure of this statement, and I do not don't really think so). Therefore, when we usually choose a location for wind power generation, we not only need to have wind all year round, but also need the wind speed to be as stable as possible. There are more details to be given, so I'll give you an overview first.

How to know how much air volume there is on the wind turbine panel?

Please don't copy and paste too much. The key is tosee if the pasted content is relevant. What LZ is asking for are wind turbine blades, not what you call turbine blades for compressors etc.

Wind turbine blades are determined based on factors such as the wind turbine's design power rating, wind turbine's rated wind speed, and local wind density.

If the diameter of the turbine of a wind turbine is D

Then its swept surface S = ∏D^2/4

The surface crossed per unit of time The mass of the wind, that is to say the flow rate of the wind, is Q = ρSV = ρ∏VD^2/4 V is the speed of the wind

According to the theorem of kinetic energy, there is a wind energy density< /p>

P1 = 0.5mV^2 = (ρ∏VD^2/4)V^2/2 = ρ∏D^2*V^2 /8

Then there is a wind energy coefficient Cp, which is the wind energy coefficient Cp obtained by the wind wheel from Ek. The percentage of wind energy that can be captured represents the total wind energy.

By coTherefore, the theoretical energy production of wind turbine power

P = Cp*P1

Before designing the wind turbine, it is necessary to The design wind speed V and air density ρ can be obtained by long-term observation of wind speed and air density in the wind field. The design Cp is related to the tip speed ratio, and the optimal value is generally selected. Therefore, the required theoretical diameter of the wheel can be recalculated.

Wind power plants are usually built where the wind speed is high.

First of all, the air volume of the wind turbine refers to the air volume passing through the fan per unit. time. The design of the fan panel is to enable the fan to use wind energy as much as possible, thereby improving the power generation efficiency of the fan. Therefore, observing the size and shape of the venti panellator, the air volume of the fan can be judged preliminary.

However, to accurately know the air volume of a fan requires actual testing and measurement. Generally speaking, the air volume of a fan will be affected by many factors, such as the number of fan blades, blade length, blade shape, rotation speed, etc. Therefore, it is impossible to accurately judge the fan air volume just by looking at the fan panel.

If you need to know the specific air volume of the fan, it is recommended to consult a professional wind turbine equipment manufacturer or carry out actual testing and measurement.

This is related to surface wind speed, but it is not absolute. It is necessary to build a wind measuring tower to measure the wind at a height of tens of meters. It would be better if the average speed ofThe wind could reach level 4. Generally, wind turbines can operate at full load when the wind is level 5. But sometimes, it is necessary to measure the wind speed throughout the year, and the wind turbine must be built in a location where wind speeds can reach approximately 200 hours.

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