风电场风机噪声监测方法初探

据现场实测,风电场300 m范围内社会噪声测值水平较低,且昼夜变化较小,对风电场背景噪声贡献不大;风机停运时背景噪声值随风速递增,二者之间存在较好的多项式回归性。在测得风机运行时噪声值和测点风速的情况下,根据回归方程式得到背景噪声,当风机运行时测得的噪声值与背景噪声之差大于1.5 dB(A)时,可以运用噪声叠加原理计算风机噪声,并且其计算误差在可接受范围之内。

Wind Power Fan Noise Monitoring Method Preliminary Exploration

According to the field measurement, wind farm 300 meters range social noise measurements level is low, and the small changes, day and night for wind farm background noise contribution is a little; Fan stop runtime background noise value increasing with wind speed, between good polynomial regression relation. In the measured noise value and the fan running speed measuring point in the case, according to the regression equation to be background noise when the fan is running when the measured noise value and the background noise when the difference is greater than 1.5 dB(A), the use of noise superposition principle can be more convenient to solve the fan noise, and its calculation error within an acceptable range.