News

In the last few years, extensive work has been carried out in the fields of sound propagation and sound perception under the slogan “WEA acceptance: from sound source to psychoacoustic evaluation”. Models have been developed, measurements have been performed and new knowledge has been gained. The conducted research is presented in detail in a final report, which will be published soon via the Technical Information Library of the Leibniz University of Hannover. The abstract of the report is given here.

The entire team “WEA-Acceptance” is looking back on exciting four project years and would like to take this opportunity to thank all supporters of the project. First of all, we would like to thank the Federal Ministry for Economic Affairs and Energy for the financial support of the project. In addition, we would like to expressly thank the operators of the wind farms, NET Windenergie GmbH and Bürgerwindpark Janneby eG. Without their great support, the extensive measurements in the project would not have been possible.

Due to the current situation the earlier announced workshop will be held online. The number of participants is therefore no longer limited and registration is still possible until Sunday, October 18, 2020. We ask for registration via email: j.hoermeyer@isd.uni-hannover.de
The agenda for the final workshop can be found here. The presentations on the project will be supported by invited lectures from research, politics and economy as well as a podium discussion. We are looking forward to an interesting workshop!

In a closing workshop the work in the project 'WEA-Akzeptanz' as well as project results will be presented. The contributions will be supported by invited expert talks from research, politics and economy as well as a concluding podium discussion. Further information about the workshop can be found here.

We would like to invite all interested persons to participate at the workshop. The workshop will be held on Tuesday, 20 October 2020 from 10 - 15 o'clock. Due to the limited number of participants, please register by e-mail to: j.hoermeyerisd.uni hannover.de

In the last three years, five extensive measurement campaigns have been carried out under a broad range of environmental conditions, including the recording of acoustic, meteorological and wind farm performance data in high resolution. The campaigns differ in terms of measurement locations and periods as well as varying distances between the acoustic measurement stations. In the measurement campaigns distances of 150 to 1100m to the wind turbine were realised. In total, the five measurement campaigns cover a period of about 12 months, during which more than 12TB of acoustic data were recorded. The prepared data are used for the validation of the models and for metrological investigations.

The whole team would like to thank all participants, especially the operators and residents, for the good cooperation and support.

With the support of Bürgerwindpark Janneby eG, acoustic and meteorological measurements were carried out at the Janneby wind farm for approx. three months. As a result of the long-term measurement campaign, acoustical measurement data was recorded under various atmospheric conditions and different wind turbine states. For the psycho-acoustic investigations, sound fields were monitored on selected days and nights with a microphone array, an artificial head and an acoustic camera. The whole team would like to thank Bürgerwindpark Janneby eG and the local citizens for the good cooperation and the great support!

For the anniversary '50 years DAGA', the NAGA (Lower Saxony Acoustic Association) invites to the 46 th Annual Conference on Acoustics 2020 in Hanover. The Institute of Communications Technology and the Institute of Structural Analysis are actively involved in the planning and organization team. Information about DAGA 2020 in Hanover can be found on the flyer or under http://2020.daga-tagung.de/. The 'WEA-Acceptance' team is looking forward to the joint organization and realization of the 'anniversary DAGA'. We cordially invite you to DAGA 2020!

Scientific staff of the Institute of Structural Analysis and the Institute of Communications Technology have presented their current research work in the project WEA-Acceptance at the 45th Annual Conference for Acoustics in Rostock (see list of publications). The employees were pleased about lively interest and good discussions around the latest topics of acoustics and wind turbines.

Since the beginning of March, acoustic and meteorologic measurements are performed in the community wind farm Janneby. As one of of the two wind turbine test fields in Schleswig-Holstein, very good environmental conditions for sound measurements are present. With the active support of  Bürgerwindpark Janneby eG acoustic measuring stations could be placed up to a distance of 1100m to the wind turbine.

Since 1. March, Mr Oliver Maas of the Institute of Meteorology and Climatology further enhances the 'WEA-acceptance' team. Mr Maas has already been involved in the first measuring campaign and supports the team with his meteorological expertise and his previous knowledge in the field of sound generation. Welcome!

The first measuring campaign within the joint project 'WEA-Akzeptanz: Von der Schallquelle zur psychoakustischen Bewertung' was successfully completed. Comprehensive meteorological and acoustic long-term measurements were carried out between June 1st and July 27th. Besides, short-term measurements of the vertical constitution of the near surface atmosphere, measurements with microphone array, an artificial head and acoustic camera could be performed on several days. The team would like to thank the operators and the local citizens for the support.

The poster „A concept for measuring the sound propagation from wind turbines“ shows the challenges of acoustic measurements on wind turbines. A measurement concept designed to overcome these challenges as well as the experimental setup of a test with defined sound source are presented.[Poster]

The poster „Overview of numerical methods for simulation of sound propagation emitted from wind tubines“ shows the influencing factors on the sound propagation and the geometrical effects due to meteorological conditions. The focus is on the comparison of numerical methods for sound propagation of wind turbines.[Poster]