Upload
harvey-mccarthy
View
220
Download
3
Embed Size (px)
Citation preview
DELTAWind and Energy Consultancy
Niels Stengaard Hansen
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
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
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
Special CasesAcoustics
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
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
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
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