Small Wind Turbine Testing ASU Small Wind Research & Demonstration Facility Beech Mountain, NC Brent Summerville, PE 2008 Small Wind Turbine Testing Organization Workshop September.
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Small Wind Turbine Testing ASU Small Wind Research & Demonstration Facility Beech Mountain, NC Brent Summerville, PE 2008 Small Wind Turbine Testing Organization Workshop September 11-12, 2008 National Wind Technology Center Boulder, Colorado Beech Mountain, NC 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 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 SWI Research & Demonstration Site Beech Mountain, NC Research •Acoustics •Duration •Performance •Avian Impacts •Birds •Bats Demonstration •Students •Public •Always open Workshops •Introductory •Advanced training •Bring in Experts •Installations Past SWWP AirX [45’] SWWP Whisper H40 [80’] Bergey XL.1 [105’] AWP3.6 [105’] SWWP Jacobs Whisper 31-20 [120’] 175 [70’] Present ARE 110 [105’] SWWP Air Breeze [45’] SWWP SWWP SWWP Whisper 100 Skystream Skystream [80’] [70’] [34’] Future Mariah Power Windspire So far…2’x6’ hole So far…34m met tower and turbine foundation Secret development for our 120’ Jacobs 31-20 tower Data Collection NRG BP20 Barometer NRG #40 Anemometers [10 sec] [1 sec] NRG #200P Wind Vanes [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 Dell PC w/ Logger Net NRG #110S Temperature Sensor with Radiation Shield [10 sec] LoggerNet Tables 1 sec table 1 min table 10 min table Daily files 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. One way…OK with AWEA std. Extrapolate Hub Height Wind Speed High Low Issues: Turbine vibration can cause -Anemometer fatigue -Weird spikes in wind speed 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 Typically: 1-min averaging, normalized to std conditions, binned power curves Watts AWP 3.6 Grid-tie Power Curve Scatter 1-min averages, normalized to sea level conditions North Carolina Small Wind Initiative Beech Mountain Research & Demonstration Site 2200 2100 2000 1900 1800 1700 1600 1500 1400 1300 1200 1100 1000 900 800 700 600 500 400 300 200 100 0 -100 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 mph Availability has typically been our biggest challenge Availability has typically been our biggest challenge Turbine Test period Availability AirX 407 days 100% AWP 3.6 414 days 82% Whisper 175 239 days 82% Whisper 100 404 days 81% Bergey XL..1 426 days 81% Jacobs 31-20 535 days 50% Dos Skystreams • 35’ monopole – Setup as a battery charger – Backfeeding a 48V Grid-tie Outback Inverter • 70’ Tilt-up – Batteryless Grid-tie – With 70’ met tower Skystreams: Performance comparison 70' Skystream 35' Skystream Vavg* (mph) 14.4 11.6 wind shear alpha % increase in Vavg 0.37 24% TI .21 .39 * 10-min avg data Wind shear Turbulence Intensity TI = std dev Vavg Skystreams: Performance comparison 70' 35' % increase windspeed % increase energy Energy (kWh) 2,383 1,499 24% 59% Air Breeze Sound Study 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 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. Brent Summerville 828-262-7333 [email protected] wind.appstate.edu Questions?