Prediction of noise from wind turbines: A theoretical and experimental study

Carlos Alberto Echeverri-Londoño, Alice Elizabeth González-Fernández

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Several noise propagation models used to calculate the noise produced by wind turbines have been reported. However, these models do not accurately predict sound pressure levels. Most of them have been developed to estimate the noise produced by industries, in which wind speeds are less than 5 m/s, and conditions favor its spread. To date, very few models can be applied to evaluate the propagation of sound from wind turbines and most of these yield inaccurate results. This study presents a comparison between noise levels that were estimated using the prediction method established in ISO 9613 Part 2 and measured levels of noise from wind turbines that are part of a wind farm currently in operation. Differences of up to 56.5 dBZ, with a median of 29.6 dBZ, were found between the estimated sound pressure levels and measured levels. The residual sound pressure levels given by standard ISO 9613 Part 2 for the wind turbines is larger for high frequencies than those for low frequencies. When the wide band equivalent continuous sound pressure level is expressed in dBA, the residual varies between -4.4 dBA and 37.7 dBA, with a median of 20.5 dBA.

Original languageEnglish
Article number9004
JournalRevista Facultad de Ingenieria
Issue number90
DOIs
StatePublished - 1 Jan 2019

Keywords

  • ISO 9613 Part 2
  • Noise propagation
  • Norma ISO 9613 Parte 2
  • Propagación del ruido
  • Ruido aerogeneradores
  • Wind turbine noise

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