The main raw materials used in the production of wind turbine blades are composite materials, including resin materials, carbon fiber materials, glass fiber materials, etc., but currently the most commonly used are resin materials (polyester resin, vinyl ester resin, epoxy resin); Compared with other chemical materials, the above materials are all environmentally friendly materials with low toxicity and low pollution. Moreover, wind energy itself belongs to the category of new green energy; also environmentally friendly materials. There is no serious pollution or dust or noise in the blade production workshop. Generally speaking, the company's working environment is good and not harmful to the body.
1. Wind energy production will harm the local ecological environment, for example by destroying vegetation,modifying the topography, causing soil erosion and desertification.
2. Electromagnetic radiation produced by wind power generation affects human habitation. In wind power generation systems, generators, substations, transmission lines, etc. are the main causes of electromagnetic radiation. When the receiving device attached to the wind farm receives the signal, it will receive the electromagnetic wave signal reflected from the wind turbine blades.
The reflected signal is a delayed signal, which may have a greater impact on the AM radio system; At the same time, the rotation of the turbine blades will also produce a phase shift signal, which may impact the FM radio system. The material the blades are made of will also interfere with electromagnetic waves. If the blades are made of metal materials, it will cause serious electrical interference.omagnetic.
In addition, an alternating electromagnetic radiation field will form around high-voltage transmission lines, causing electrostatic induction relative to the ground, causing radio interference and affecting human health.
3. Wind energy affects the local climate. Wind energy uses wind energy present 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, wind turbines The electricity generation process must consume some of the wind energy present in the atmosphere. As an important factor in climate change, changes in wind energy will inevitably lead to climate change.
When some offshore wind farms and inland wind farms operate, if the humidity is relatively high, a huge tail ofWater vapor will condense behind the wind turbine, which can affect the local microclimate, as humidity, sand and dust have an impact.
4. Wind turbine blade damage is prone to accidents when the wind turbine blades are subjected to strong winds above 25m/s (wind speed cut off), although the wind turbine is in a state of stop. However, due to the limited bending moment, torque, shear resistance and extrusion that the blade root can withstand, in severe cases the entire blade may fly away.
Causes casualties and damage to buildings on the road (although wind turbines are mainly located in coastal areas with sparsely populated areas). In addition to extreme winds, blade surface corrosion, lightning strikes, ice cover, cracks, etc. can occur. can easily cause blades to break, causing accidents and affecting public safety.
5. Noise risks linked to wind energy production. For a wind turbine of this size, when the huge blades rotate (one blade requires a special long collapsible truck to transport), noise is inevitable.de.
The sound of wind blades can be roughly divided into three categories.
1. Thick noise, produced by the compression of the air and the blades. In windy weather, when we close the doors and windows, we often hear a sharp, harsh sound, which sounds like a ghost. crying or a howling wolf? , coupled with the gloomy sky outside, it's still a little scary to think about it.
2. Load noise, as the name suggests, is caused by the blades carrying a large load.
3. Impulse noise is generated when the Mach number is close to 1. In this way, the impact of noise on the environment cannot be ignored.
Detailed information
Measurementsrisk response:
1. The construction of a wind power plant requires preliminary planning. It should be far from feasible. residential areas and avoid environmentally sensitive areas.
2. Improve the design level of wind power generation so that it can be well integrated into the environment.
3. When developing wind power generation, environmental, economic and social effects must be considered comprehensively, and any of them cannot be ignored. The impact on the environment must be reasonably taken into account in both its positive and negative aspects.
Baidu Encyclopedia-Wind Energy