What is the decibel level of wind turbine operation noise?
The decibel level of wind turbine operation noise varies due to various factors. The following is the decibel information for different situations:
1. The operating noise of modern wind turbines at a distance of 150 meters is about 45-55 decibels, and the mechanical noise at a distance of 500 meters can be reduced to below 40 decibels, similar to the sound of a quiet bedroom environment.
2. Noise levels at different distances from the fan:
At a distance of 50 meters, the noise may be around 50-60 decibels;
At a distance of 100 meters, the noise may decrease to 40-50 decibels;
At a distance of 200-300 meters, the noise generally decreases to below 40 decibels, basically reaching the level of environmental background noise.
70% of the fan noise is low-frequency aerodynamic noise (below 200Hz) generated by blade rotation. Although it propagates far and decays slowly, the volume itself may not be high. However, due to low-frequency vibration, it can easily cause discomfort to the human body (such as buzzing), resulting in perceived noise being greater than the actual volume.
4. The national standards for wind power generation noise are divided into four categories: Class 0 with 50 decibels/40 decibels, Class 1 with 55 decibels/45 decibels, Class 2 with 60 decibels/50 decibels, and Class 3 with 65 decibels/55 decibels.
In summary, the noise level of wind turbines is affected by various factors such as distance, wind turbine model, and environment. Modern wind turbines usually have low noise levels beyond the standard distance, but their close range or low-frequency characteristics may lead to perceived noise and even cause disturbance to residents beyond the standard. If there is a problem of noise disturbance caused by wind power generation, it can be resolved through negotiation with the power generation party, complaint to the environmental protection department, or filing a lawsuit.
