Compared with other generators, the main difference between wind turbines is power, and other differences are power, volume and installation environment; Wind power generation is currently mainly a question of cost and lifespan, and noise is not the main problem. Generator noise is mainly mechanical noise and electromagnetic noise. Mechanical noise is mainly a bearing problem, and electromagnetic noise is mainly an electromagnetic eddy current problem. Waveform, spectrum and sound level analysis can be used as a means. understand the current situation and analyze the source of noise; the extent of the influence can be Calculated based on a point sound source (double the distance, reduce the sound level by 6 dB);
Wind turbines are very noisy and very disturbing to residents. What can be done effectivelyacement?
There are two types of noise generated by wind turbines, one is the noise generated by the generator transmission chain in the unit cabin, and the other is the noise generated by wind turbines. the air flow swept by the rotating blades.
Nowadays, the height of wind turbine towers is generally greater than 80 meters. From my personal experience in the wind farm, the noise of the generator transmission chain in the cabin is very low, even inaudible under the unit. . The loudest sound is that of the blades.
If it is just the ordinary sound of blades sweeping in the wind, there is no way to fix this problem. However, some blades have problems or are broken, and the blades whistle. This is a fault point that can be resolved by repairing or replacing the blades.
Also, when the cabin rotates, some unit malfunctions emit a loud yaw noise. This may besolved by repairing and replacing the yaw pad or friction plate and other parts. the unit. .
Of course, regardless of the above, you can complain if the noise generated disturbs residents. The project must pass an environmental assessment before construction, and the environmental assessment includes noise. Report noise complaints to the relevant environmental departments. These services will go to the wind farm to inspect or supervise, and they will at least resolve the problem, such as repairing broken units in a timely manner.