delta wind and energy consultancy niels stengaard hansen
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DELTAWind and Energy Consultancy
Niels Stengaard Hansen
![Page 2: DELTA Wind and Energy Consultancy Niels Stengaard Hansen](https://reader030.vdocuments.us/reader030/viewer/2022012918/56649dbb5503460f94aaca3c/html5/thumbnails/2.jpg)
Planning for new windfarms
• Many aspects to consider, such as
– Initial cost and maintenance cost
– Wind resources and expected output
– Power quality and grid requirements
– Noise impact
– Shadow impact
– Supplier and Technology
– Local subsidies
– Will I make it a core competence or use consultants
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The Knowledge Centre DELTA
DELTA is one of Europe's leading test-, design-, service-,
consulting- and educational organisations within electronics,
software, optics and acoustics.
• More than 60 years of experience
• 270 employees out of which 50% are engineers
• Annual turnover 31,5 Mill Euro
• 50% export
• 2,500 customer assignments annually
• Headquarters in DK
• Locations in DK, UK and SE
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DELTAKey competencies
• Manufacturers and
suppliers
– Testing and validation
(EMC, Reliability, noise
and vibration)
– Specification of
components
– Certifications and
approvals
• Windfarm owners and
developers
– Noise impacts
– Power quality and grid
requirements
– Troubleshooting
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Special CasesAcoustics
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Principle of Auralisation (simulation of WT sound)
• Record the windturbine (using HATS or single microphone)
Plate
Free field
HATS
Nord2000
Pos. B
• calculate the Propagation Path to the sound source and
manipulate the recorded signal
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180 m
180 m
Auralised Position 3Wind Speed: 6 m/s (10m)Wind turbines Hub height: 60 m
STOP
Play manipulated sound in calibrated surrounding
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Case: 2007 Low Frequency Disturbance by wind turbines
Masking
Background noise
Sound transmission
How does meteorology affect sound propagation
Listening test
Litterature study
Measuring
• Samples for listening test
Noise generation
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DELTA advantage
• Grown with the industry since the early days
• Independent
• Combines experience with ongoing research to support our
customers
For more info:
www.delta.dk