1 results about "Noise assessment" patented technology

This invention relates to the field of noise environmental impact assessment technology, and discloses a method and related apparatus for assessing the noise environmental impact of onshore wind farms. The method first constructs a discretized representation containing spatial coordinates, calculates noise propagation attenuation and directional parameters, and establishes a propagation path feature association array; it then matches the wind turbine sound power level with hourly meteorological data of the assessment benchmark year, determines the directivity correction amount, and forms a complete propagation array containing time-varying sound source parameters; it calculates and superimposes the hourly noise contribution value of each wind turbine, obtains the daily continuous equivalent sound level through energy averaging, and extracts the maximum continuous equivalent sound level as an evaluation index; based on the index, it generates a spatial distribution report of noise impact. This invention constructs a dynamic sound source intensity model, uses a gridded array algorithm to improve computational efficiency, comprehensively considers multiple attenuation mechanisms and the superposition effect of multiple wind turbines, accurately reflects the actual operating conditions of the wind farm, and significantly improves the accuracy and scientific nature of the noise assessment results.