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 city. 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.
1. Because wind energy does far more harm to the environment than economic benefits and is not environmentally friendly, it was stopped. The dangers are: 2. Wind power generation will harm the local ecological environment, destroy vegetation, change the terrain, and cause soil erosion and desertification. 3. The electromagnetic radiation produced by wind power affects human habitation. In wind power systems, generators, substations and transmission lines are the main sources of electromagnetic radiation. Additional receivers in wind power plants, when receiving signals, will pick up electromagnetic wave signals reflected by the wind turbine blades. The reflected signal is a lagging signal that has a great impact on AM radio systems. 4. Wind power affects the 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 heat will inevitably produce or consume another type of energy. Therefore, the power generation process of wind turbines will inevitably consume part of the wind energy in the atmosphere. As one of the important factors of climate change, wind energy will inevitably Will bring about climate change. 5. Wind energy blades are prone to safety accidents. When the wind turbine blades of a wind turbine are subjected to strong winds of more than 25m/s, the bending moment, torque, shear strength and extrusion strength that the blade roots can withstand are limited. In severe cases, the entire blade will fly out and cause personnel damage. Casualties and damage to buildings on roads. 6. Noise hazards from wind power generation. For such a large-scale fan, the noise is inevitable when the blades rotate with huge party fees. The noise of the fan blades can be roughly divided into three categories: thickness noise, which is caused by the compression of air and blades. In windy weather, with doors and windows closed, do you often hear sharp and harsh sounds, which feel like howling ghosts and wolves, coupled with the gloomy sky outside, it is a bit scary to think about it; load noise, as the name suggests, is caused by the large load on the blades. ; impulse noise, that is, when the Mach number is close to 1. In this way, the impact of noise on the environment cannot be ignored.