Impact of wind power on weather

Introduction The impact of wind power on weather Wind power affects local climate Wind power uses wind energy in the atmosphere. According to the law of conservation of energy, the consumption and generation of an energy must necessarily produce or consume

Impact of wind power on weather

Wind power affects local climate Wind power is the use of wind energy in the atmosphere. According to the law of conservation of energy, the consumption and production of one type of energy must produce or consume another type of energy. Therefore, the power generation process of wind turbines must be It is necessary to consume part of the wind energy in the atmosphere. As one of the important factors of climate change, wind energy changes will inevitably bring about climate changes.

When some offshore wind farms and inland ridge wind farms are operating, if the humidity is relatively high, a huge water vapor tail will condense behind the wind turbine, which may affect the local microclimate, such as humidity, sand and dust. Subsidence has an impact.

Accidents are likely to occur when the wind turbine blades are damaged. When the wind turbine blades are subjected to strong winds above 25m/s (cut-out wind speed), although the wind turbine is in a shutdown state, due to The bending moment, torque, shear strength, and extrusion strength that the blade root can withstand is limited. In severe cases, the entire blade can fly out.

Causing casualties and building damage on the road (although wind turbines are mostly located in coastal areas with sparsely populated areas). In addition to extreme winds, blade surface corrosion, lightning strikes, ice coating, cracks, etc. can easily cause blades to break, causing accidents and affecting public safety.

Extended information

Due to unstable air volume, the wind turbine outputs alternating current of 13 to 25V, which must be rectified by the charger and then Charging the storage battery converts the electrical energy generated by the wind turbine into chemical energy. Then use an inverter power supply with a protection circuit to convert the chemical energy in the battery into AC 220V mains power to ensure stable use.

Usually people think that the power of wind power is completely determined by the power of the wind turbine, and they always want to buy a larger wind turbine, but this is incorrect. The current wind turbine only charges the battery, and the battery stores the electrical energy. The amount of electrical power people ultimately use is more closely related to the size of the battery.

The power mainly depends on the air volume, not just the power of the machine head. In the Mainland, small wind turbines are more suitable than larger ones. Because it is more easily driven by small winds to generate electricity, continuous small winds can provide greater energy than temporary strong winds.

When there is no wind, people can still use the electricity brought by the wind normally. That is to say, a 200W wind turbine can also be used with a large battery and an inverter to obtain 500W or even 1000W or even more. Large power output.

Baidu Encyclopedia - Wind Power

Two points:

Wind turbines do not generate electricity all the time. When there is no wind, it still needs to be on standby;

The height of modern megawatt-level wind turbines is generally 65-90 meters, and they are in the unobstructed wilderness. If there is no wind when you stand upstairs, there may be two reasons: First, your building is not high enough. The most common 80-meter-high wind turbine is equivalent to a 25-30-story building. The second floor is built in the cityYes, there are too many buildings in the city, which makes the wind unstable and turbulent everywhere. For example, a city is like a river bottom with many large rocks, and the water flow is unstable and uneven. So when you stand upstairs, there may be no wind at times and gusty winds at times. The wind turbine is in the wind field, there is no obstruction, the wind speed is stable and lasts for a long time (wind measurement and corresponding simulation calculation are required). Moreover, the specific positions of the fans are calculated to ensure low turbulence and stable wind speed.

So, the wind upstairs is different from the wind field, and the height of the building is different from the height of the wind turbine. If you can’t feel the wind when you stand upstairs, it doesn’t mean that wind power cannot be generated.

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