DELTA Wind and Energy Consultancy

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DELTAWind and Energy Consultancy

• Niels Stengaard Hansen

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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)

• calculate the Propagation Path to the sound
  source and manipulate the recorded signal

Nord2000
Free field
Plate
HATS
Pos. B
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Auralised Position 3 Wind Speed 6 m/s (10m) Wind
turbines Hub height 60 m
Play manipulated sound in calibrated surrounding
STOP
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Case 2007 Low Frequency Disturbance by wind
turbines
Listening test
How does meteorology affect sound propagation
Noise generation
Masking
Background noise Sound transmission

• Measuring
• Samples for listening test

Litterature study
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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 customercentre_at_delta
.dk nsh_at_delta.dk