DL/T27.1801124182-200810842008NoiselimitsandmeasurementmethodofwindpowerplantDL/TDL/T1007611noiseofwindpowerplantAA-weightedsoundpressurelevelALAdBequivalentcontinuousA-weightedsoundpressurelevelAAeqLdBA0.1eq0110lg10dTLLtT⎛⎞=⎜⎟⎝⎠∫1LAtAdBTs10.1eq1110lg10inLiLn=⎛⎞=⎜⎟⎝⎠∑LiiAdBnn-percentexceededlevelTNLALALNTdBbackgroundnoise10m0.05mvsm/sALdLndB±1sdB---A2AA.1A