Small Wind Turbine Testing ASU Small Wind Research

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Small Wind Turbine TestingASU Small Wind
Research Demonstration FacilityBeech Mountain,
NCBrent Summerville, PE

• 2008 Small Wind Turbine Testing Organization
  WorkshopSeptember 11-12, 2008National Wind
  Technology CenterBoulder, Colorado

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Beech Mountain, NC
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History and Staff

• Started in 2004 by Dr. Dennis Scanlin
• North Carolina Small Wind Initiative
• Wind maps
• Windy landowners
• Anemometer loan
• Workshops
• Beech Mountain
• Director
• Dr. Scanlin
• Site Manager
• Brent Summerville, PE
• Tech assistance
• Dr. Brian Raichle
• Lots of Help
• Appropriate Technology Students

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History and Staff

• Started in 2004 by Dr. Dennis Scanlin
• North Carolina Small Wind Initiative
• Wind maps
• Windy landowners
• Anemometer loan
• Workshops
• Beech Mountain
• Director
• Dr. Scanlin
• Site Manager
• Brent Summerville, PE
• Tech assistance
• Dr. Brian Raichle
• Lots of Help
• Appropriate Technology Students

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SWI Research Demonstration SiteBeech Mountain,
NC

• Research
• Acoustics
• Duration
• Performance
• Avian Impacts
• Birds
• Bats

• Demonstration
• Students
• Public
• Always open

• Workshops
• Introductory
• Advanced training
• Bring in Experts
• Installations

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Past
SWWP AirX 45
SWWP Whisper H40 80
Bergey XL.1 105
AWP3.6 105
SWWP Whisper 175 70
Jacobs 31-20 120
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Present
SWWP Air Breeze 45
SWWP Whisper 100 80
SWWP Skystream 70
SWWP Skystream 34
ARE 110 105
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Future
Secret development for our 120 Jacobs 31-20 tower
Mariah Power Windspire So far2x6 hole
So far34m met tower and turbine foundation
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Data Collection
NRG 200P Wind Vanes 10 sec
NRG 40 Anemometers 1 sec
NRG BP20 Barometer 10 sec

• Ohio Semitronics Power Transducers
• Measures power delivered to the GRID or BATTERY
• 1 sec

Li-Cor LI-200SA Pyranometer 10 sec
Campbell Scientific CR1000 Data Logger

• LoggerNet Tables
• 1 sec table
• 1 min table
• 10 min table
• Daily files

Dell PC w/ Logger Net
NRG 110S Temperature Sensor with Radiation
Shield 10 sec
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More Data Collection
Turbine speed? Just ordered an APRS World RPM
board (thanks for the donation) Nacelle yaw
angle or furling angle? No Turbine
status? No Do you collect sound data? Yes,
manually, when we can.
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One wayOK with AWEA std.
Extrapolate Hub Height Wind Speed
High
Low

• Issues
• Turbine vibration can cause
• Anemometer fatigue
• Weird spikes in wind speed

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IEC way
Met tower 2.5D upwind

• New trend
• Hosting a test turbine
• Real time data transmitted to Mfg in paralles via
  DSL connection
• Skystream
• Earth Turbine

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Typically 1-min averaging, normalized to std
conditions, binned power curves
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Availability has typically been our biggest
challenge
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Availability has typically been our biggest
challenge
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DosSkystreams

• 35 monopole
• Setup as a battery charger
• Backfeeding a 48V Grid-tie Outback Inverter
• 70 Tilt-up
• Batteryless Grid-tie
• With 70 met tower

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Skystreams Performance comparison
10-min avg data
Turbulence Intensity
TI std dev Vavg
Wind shear
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Skystreams Performance comparison
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Air Breeze Sound Study
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Lastly

• Per DEWI-OCC visit, to exclude turbulent
  measurement sectors for Breeze power and duration
  tests.
• To measure RPM on the ARE110.
• Standards Typically based on IEC using AWEA
  standard principles of
• Wind tower anemometer booms
• 1-minute averaging
• Data is processed in real time, would like to
  pursue real-time analysis
• Need to change to the AWEA sound measurement
  standards

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NWTC help
After four years of experience and lots of hard
work and fun, we are ready to learn what it will
take to bring our operation up to professional
standards.
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Brent Summerville 828-262-7333 wind_at_appstate.edu w
ind.appstate.edu
Questions?