Wind Noise, Light And Shadow From The Study Of Environmental Protection

The construction of wind farms in recent years has greatly promoted the local economic development. However, if the fan layout is not scientific, is likely to produce light flashes on the surrounding houses affected. Wind farm on the fan light and shadow flicker effects and forecast the state is currently no corresponding standards and norms, but also no reference information. This paper selects a location in Liaoning province, representative of several types of wind farms for field trips, the fan noise can be approximated as a point source treatment, according to the point source noise attenuation model, calculated at different distances from the source the noise value and the actual value of the measured noise sensitive point of comparison, to study the distance of500meters the feasibility of environmental protection. The fan-centric, the fan on the ground at all time to integrate the projection area is oval area, residential area sensitive point by calculating the projection distance and500meters from the comparison of protection, to study environmental protection distance of500meters possible sex. And use of the existing fan light, noise calculation method to calculate, analyze, develop for the Liaoning Provincial Environmental Protection Department of Environmental Protection wind farm500meters away from the feasibility study and discussion.According to the site reconnaissance and the combination of wind turbine general layout plan of the wind farm involved in the residential area close to the fan with filter, use the formula to calculate the first within500meters of the fan noise attenuation, re-use monitoring instruments to monitor closer to residential areas from the fan noise sensitive point value, based on the data between before and after to determine the noise protection distance of500meters is feasible. Of wind farms and residential areas related to the close, the fan bearing a relatively sensitive screening, the use of environmental monitoring methods used to calculate the equivalent sound level Leq, fan noise can be approximated as a point source treatment, based on point-source noise decay mode, calculated at different distances from the source of the noise value is calculated based on the solar elevation angle can be calculated the length of the shadow of the object L, and calculate the fan angle of light affect the length of the projection area and projected range of areas, and residential areas sensitive the actual projection of points for comparison, to explore the feasibility of light protection from the500Based on the Liaoning Province of Class2inland wind farms (low and hilly landscape features wind, hilly landscape features wind) fan noise, light and shade protection from the environment conducted in-depth study of selected representative of the relative wind instance, collecting, collecting various data, fan noise, light and shade protection from the field monitoring studies. Summary data of the above cause wind noise, light and shadow effects, and Liaoning Provincial Environmental Protection Bureau to develop the wind farm500meters noise, light and shadow protection distance for comparison, the development of research now500meters away from the actual feasibility of environmental protection.