Power Performance Measurements: Cheaper Faster Better
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This webinar will provide a vision of power curve testing under the new IEC standard. The use of lidar and other remote sensing technologies is expected to revolutionize power curve testing, eliminating the need for expensive permanent met towers for power curve testing. Watch the webinar: http://www.windpowerengineering.com/webinars/power-performance-measurements-cheaper-faster-better/
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Power Performance Measurements: Cheaper Faster Better
- 1. #WindWebinar Dan Bernadett Chief Engineer, AWS Truepower Power Performance Measurements Cheaper, Faster, Better!
- 2. #WindWebinar This webinar will be available afterwards at www.windpowerengineering.com & email Q&A at the end of the presentation Hashtag for this webinar: #WindWebinar Before We Start
- 3. #WindWebinar Introducing the Featured Speakers MODERATOR FEATURED SPEAKER Paul Dvorak Editorial Director Windpower Engineering & Development Dan Bernadett P.E., Chief Engineer AWS Truepower
- 4. #WindWebinar Acknowledgements Thank you to Ellie Weyer of AWS Truepower for collaboration on this presentation.
- 5. #WindWebinar 125,000 Megawatts (MW) Assessed 85% of our staff is comprised of engineers, meteorologists and environmental specialists. Approximately 50% of US wind projects financed in 2015 used AWST Energy Production Reports. 43 GW We provide renewable energy forecasting services to over 43 gigawatts (GW) of capacity. Consulted to about a third of all Brazil wind projects that came online over the last two years 80+ Number of Countries Where We Worked 30+ Years of Experience Assessed resource and energy for over half of all India wind projects over the last two years.
- 6. #WindWebinar Background Power Performance Measurements • Measure wind speed • Measure power output • Plot power vs wind speed and compare to warranted curve
- 7. #WindWebinar Background Measure wind speed • Terrain and obstacle assessment to determine valid wind direction sectors • Anemometer selection and mounting for highest accuracy • Temperature and pressure measurements for air density correction • Turbulence, shear, and inclined flow measurements for TSA filters
- 8. #WindWebinar Background Measure power output • Current transducer installation requires turbine transformer to be de-energized • Need to measure low voltage. If turbine transformer is uptower, that means power measurements are performed uptower • Need to synchronize clocks of power and wind speed measurements
- 9. #WindWebinar Background Plot power vs wind speed and compare to warranted curve • Data filtering • Curtailments for grid or environmental issues • Warranty may be a function of uncertainty
- 10. #WindWebinar Overview • Power performance measurements (PPM) are crucial to ensuring turbine and plant performance meet expectations • However, the current standard requires hub height met towers, which makes measurements time consuming and expensive
- 11. #WindWebinar Summary • Old standard • New standard • What this change means for you
- 12. #WindWebinar The Opportunity • Draft standard allows met towers to be as short as the bottom sweep of the rotor • For a 100m rotor on an 80m tower, bottom sweep of the rotor is 30m
- 14. #WindWebinar Application Considerations Measurement Configuration Shear Normalization Veer Added Uncertainty Turbulence Inclined Flow Hub height mast No No Yes Optional Hub Height Mast + RSD* Yes Yes No Optional RSD + non-hub height mast Yes Yes No Optional Met mast above hub height Yes Yes No Optional * RSD = Remote Sensing Device
- 15. #WindWebinar Application Limitations Wind Speed Measurement/ Terrain Type HH/Simple HH/Complex REWS/Simple REWS/Complex Hub height mast Hub Height Mast + RSD RSD + non-hub height mast Met mast above hub height * RSD = Remote Sensing Device
- 16. #WindWebinar Old Standard Hub height met towers • Expensive • Lengthy permitting • Lengthy procurement o Custom tower made to spec with 6-10 WEEK lead time • Lengthy construction (excavation and concrete cure time) Source: AWS Truepower, LLC
- 17. #WindWebinar New Standard - Advantages Lower blade sweep met tower height used in conjunction with remote sensing like LIDAR or SODAR • Cheaper ($) • Shorter permitting • Faster procurement o Off-the-shelf tower with 6-10 DAY lead time • Faster construction (NO excavation and NO concrete) Source:AWSTruepower,LLC
- 18. #WindWebinar Cost Comparison: New VS Old Standard Prices include: • Foundation materials, labor, mobilization • Tower materials, labor, mobilization • Booms and hardware materials and labor • FAA light and power supply • H-frame, equipment rental, cranes, paint Source: AWS Truepower, LLC
- 19. #WindWebinar Cost Comparison: New VS Old Standard Tower Type Height (m) Cost Self-supporting tower 80 $160,000 Guyed lattice tower 80 $100,000 Tilt-up tubular tower 80 $75,000 Tilt-up tubular tower 60 $40,000 Tilt-up tubular tower 50 $35,000 Tilt-up tubular tower 34 $25,000 Three month lidar rental n/a $30,000 Lidar shipping & commissioning n/a $10,000
- 20. #WindWebinar Cost Comparison: New VS Old Standard Scenario Components Height Cost Column1Advantage/Disadvantage 1 Tilt-up tubular tower 80 $75,000 Higher uncertainty – no shear normalization 2 Tilt-up tubular tower 50 $35,000 Three month LIDAR rental $30,000 LIDAR shipping & commissioning $10,000 Total cost $75,000 3 Guyed lattice tower 80 $100,000 Higher cost, higher uncertainty 4 Self-supporting tower 80 $160,000 Higher cost, higher uncertainty Same as 80m tower but lower uncertainty because we can normalize shear
- 21. #WindWebinar Schedule Comparison Self-supporting met tower Tilt-up met tower Week 1 2 3 4 5 6 7 8 9 10 11 12 Met Tower Procurement and Installation Order Towers X Tower Manufacture X X X X X X X X Foundation Installation and Curing X X X X X X Tower shipping X Tower Installations (Including Booms) X X Week 1 2 3 4 5 6 7 8 9 10 11 12 Met Tower Procurement and Installation Order Towers X Tower Manufacture !!! Foundation Installation and Curing !!! Tower Shipping X Tower Installations (Including Booms) X X
- 22. #WindWebinar What About Accuracy? The remote sensing annex in the new standard contains extensive validation procedures to ensure that remote sensing is as accurate as cup anemometry, and that remaining uncertainty is quantified and included in the process.
- 23. #WindWebinar New Standard Disadvantages Higher uncertainty • New sources of uncertainty added o i.e. if you don’t normalize for shear, uncertainty is added • More complicated – definition of wind speed can change! o If use REWS (Rotor Equivalent Wind Speed) to normalize shear, need REWS power curve and REWS wind characterization
- 24. #WindWebinar Preparing for the New Standard • Remote sensing in parallel with PPM • TI correction • REWS (Rotor Equivalent Wind Speed) • Veer • Inclined flow
- 25. #WindWebinar Conclusions Faster & Cheaper (with same uncertainty) Better= (if managed properly) Higher Uncertainty & More Complicated Worse=(if not managed properly)
- 26. #WindWebinar Questions? MODERATOR FEATURED SPEAKER Paul Dvorak Editorial Director Windpower Engineering & Development pdvorak@wtwhmedia.com Dan Bernadett P.E., Chief Engineer AWS Truepower dbernadett@awstruepower.com
- 27. #WindWebinar This webinar will be available at www.windpowerengineering.com & email Tweet with hashtag #WindWebinar Connect with Windpower Engineering & Development Discuss this on EngineeringExchange.com Don’t Forget!
- 28. #WindWebinar