风机噪声环境影响预测研究

Analysis on Environmental Impact Prediction of Wind Turbine Noise

风能为可再生能源,中国风力资源丰富,风电行业发展迅速。此过程中,风机运转噪声对周围环境的影响不容忽视,距离风机机位较近的地区不利于生活及工作。风机噪声问题已成为风电场选址的制约因素之一,合理预测噪声值及其影响范围显得尤为必要。经研究,《环境影响评价技术导则声环境》中的点声源距离衰减计算公式并不完全适用于风机噪声值预测。根据风机结构及其噪声随距离传播的特点,对导则中的公式加以修正,引入了点声源起始位置计算的公式,提出了关于风机噪声预测的建议,为风机噪声预测及评价提供参考。

As a renewable energy which is widely used by humans,China＇s wind power industry now is growing rapidly.In this process,the influence of fan running noise on the surrounding environment can＇t be ignored.By comparing with the monitoring data,the attenuation formulas in the＂Technical Guidelines for Noise Impact Assessment＂are not suitable for noise prediction of wind turbines.Based on the blade shape and characteristics of wind turbines in China,the noise prediction for wind turbines is modified,so as to provide a reference for the prediction and evaluation of wind turbines.