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Increase AEP by 2% With Improved Wind Measurement

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The iSpin technology at the spinner allows owners to accurately measure the most important input parameter of wind turbine operation: the wind speed and direction. This allows operators to determine undetected yaw misalignment. After correcting the yaw misalignment, owners can tap the full potential of the wind turbines, reduce damaging loads, and decrease repair cost.
Combining yaw misalignment with turbulence intensity and inflow angles in all wind sectors, the iSpin technology turns the wind turbines into virtual wind met masts. Finally, the iSpin technology is capable of determining IEC compliant power curves as well as performance monitoring during operations of the wind turbine life time.

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Increase AEP by 2% With Improved Wind Measurement

  1. 1. #WindWebinar
  2. 2. #WindWebinar ROMO Wind is a technology and service company and the exclusive provider of the patented iSpin technology. We provide our customers with the best solutions for measuring, monitoring and improving wind turbine performance for a better return on their investment. ROMO Wind at a glance Page 2 ROMO Wind AG Baarer Strasse 80 6300 Zug Switzerland sales@romowind.com Offices in Denmark, Germany, Italy, UK, Ireland, Spain, Switzerland and France. 21 January 2016 | ROMO Wind Introducing the spinner anemometer iSpin Our partner in North America:
  3. 3. #WindWebinar Agenda Page 3 Create transparency in your wind park operations by monitoring3 A solution: The iSpin technology2 The problem: Inaccurate wind measurements at wind turbines1 21 January 2016 | ROMO Wind Introducing the spinner anemometer iSpin
  4. 4. #WindWebinar Illustration of why nacelle anemometers don’t work Page 4 Wind vane issues •  Even very small installation errors mean large yaw misalignments •  Sensor resolution •  Errors with the wind sensors •  Turbines today do not monitor and correct yaw misalignments Site conditions differ •  Terrain conditions •  Turbine prototype test conditions •  Other wind turbines Ancillary equipment alters the nacelle flow •  Retrofitting of e.g. new aviation lights •  Relocation or change of wind direction sensor •  Nacelle based lidars 21 January 2016 | ROMO Wind Introducing the spinner anemometer iSpin
  5. 5. #WindWebinar Agenda Page 5 3 2 1 Create transparency in your wind park operations by monitoring A solution: The iSpin technology The problem: Inaccurate wind measurements at wind turbines 21 January 2016 | ROMO Wind Introducing the spinner anemometer iSpin
  6. 6. #WindWebinar Overcoming issues with current wind measurements Page 6 Control loads Yaw misalignment correction Relative power curve comparisons Improve production forecast iSpin Improve performance Reduce maintenance costs Life time extension Optimise revenues Monitor performance Position of conventional nacelle anemometer Position of iSpin spinner anemometer 21 January 2016 | ROMO Wind Introducing the spinner anemometer iSpin
  7. 7. #WindWebinar The iSpin technology Page 7 •  Invented and developed by DTU / RISØ in Denmark since 2004 •  Innovative application of “old” proven ultrasonic measurement technology •  Since April 2013: IEC 61400-12-2 standard for performance measurement •  Acquired and industrially developed by ROMO Wind since 2011 •  What iSpin measures: -  Wind speed (rotor speed and “free” wind) -  Yaw misalignment -  Inclination angle -  Turbulence intensity -  Temperature -  Air density (by adding an air pressure sensor) -  Wind direction (by adding a nacelle direction sensor) 21 January 2016 | ROMO Wind Introducing the spinner anemometer iSpin
  8. 8. #WindWebinar How the spinner anemometer works Page 8 38 degree yaw misalignment0 degree yaw misalignment Measured wind speed by the 3 sensors at wind direction 90° to rotor swept area Measured wind speed by the 3 sensors on a wind turbine with yaw misalignment 21 January 2016 | ROMO Wind Introducing the spinner anemometer iSpin
  9. 9. #WindWebinar Agenda Page 9 3 2 1 Create transparency in your wind park operations by monitoring A solution: The iSpin technology The problem: Inaccurate wind measurements at wind turbines Power performance3.3 Advanced wind measurements3.2 Yaw misalignments3.1 21 January 2016 | ROMO Wind Introducing the spinner anemometer iSpin
  10. 10. #WindWebinar Agenda Page 10 3 2 1 Create transparency in your wind park operations by monitoring A solution: The iSpin technology The problem: Inaccurate wind measurements at wind turbines Power performance3.3 Advanced wind measurements3.2 Yaw misalignments3.1 21 January 2016 | ROMO Wind Introducing the spinner anemometer iSpin
  11. 11. #WindWebinar Yaw misalignment measured with iSpin Page 11 static yaw misalignment range of dynamic yaw misalignment relevant range of wind speeds 21 January 2016 | ROMO Wind Introducing the spinner anemometer iSpin
  12. 12. #WindWebinar Yaw misalignment monitoring is necessary Page 12 15o initial yaw misalignment Correction Wind vane exchange Re-correction Wind vane exchange Aviation lights 21 January 2016 | ROMO Wind Introducing the spinner anemometer iSpin
  13. 13. #WindWebinar Static yaw misalignments are very frequent Page 13 ROMO Wind’s static yaw misalignment statistics (266 wind turbines) Static yaw misalignment <4° 4°- 8° 8°-12° 12°-16° >16° Distribution 48% 28% 14% 5% 5% à 1,98% more AEP by having the static yaw misalignments corrected. Every day without yaw misalignment optimisation is a net loss. 21 January 2016 | ROMO Wind Introducing the spinner anemometer iSpin
  14. 14. #WindWebinar Yaw misalignments = loss of production Page 14 Yaw misalignments Lower production 4° 0.5% 6° 1.1% 8° 1.9% 10° 3.0% 12° 4.3% 14° 5.9% 16° 7.6% 18° 9.5% Relative power curve comparison 21 January 2016 | ROMO Wind Introducing the spinner anemometer iSpin
  15. 15. #WindWebinar All turbine types suffer yaw misalignment – to varying degrees Page 15 Per turbine type 21 January 2016 | ROMO Wind Introducing the spinner anemometer iSpin
  16. 16. #WindWebinar Benchmarking of yaw control (1/2) Page 16 Bad yaw controlAverage yaw controlGood yaw control 21 January 2016 | ROMO Wind Introducing the spinner anemometer iSpin
  17. 17. #WindWebinar Yaw misalignments = higher loads* Page 17 *report by GL Garrad Hassan, Fatigue Load Calculations for ROMO Wind to Assess Sensitivity to Changes in 10-min Mean Yaw Error, 29-11-2012, report is publicly available on our website www.romowind.com in the “Knowledge centre” section. 21 January 2016 | ROMO Wind Introducing the spinner anemometer iSpin
  18. 18. #WindWebinar Agenda Page 18 3 2 1 Create transparency in your wind park operations by monitoring A solution: The iSpin technology The problem: Inaccurate wind measurements at wind turbines Power performance3.3 Advanced wind measurements3.2 Yaw misalignments3.1 21 January 2016 | ROMO Wind Introducing the spinner anemometer iSpin
  19. 19. #WindWebinar Advanced wind measurements: wind speed Page 1921 January 2016 | ROMO Wind Introducing the spinner anemometer iSpin
  20. 20. #WindWebinar Page 20 24% turbulence intensity 21% turbulence intensity 20% turbulence intensity 20% turbulence intensity Enables comparison of the original site evaluation with measured data for turbulence intensity and flow inclination. IEC 61400: •  Turbulence intensity A < 18%; B < 16% •  Flow inclination < 8° Turbulence intensity and flow inclination 21 January 2016 | ROMO Wind Introducing the spinner anemometer iSpin
  21. 21. #WindWebinar Advanced wind measurements: turbulence intensity Page 2121 January 2016 | ROMO Wind Introducing the spinner anemometer iSpin
  22. 22. #WindWebinar Page 22 Advanced wind measurements: flow inclination 21 January 2016 | ROMO Wind Introducing the spinner anemometer iSpin
  23. 23. #WindWebinar Agenda Page 23 3 2 1 Create transparency in your wind park operations by monitoring A solution: The iSpin technology The problem: Inaccurate wind measurements at wind turbines Power performance3.3 Advanced wind measurements3.2 Yaw misalignments3.1 21 January 2016 | ROMO Wind Introducing the spinner anemometer iSpin
  24. 24. #WindWebinar Power Curve Measurements Page 2421 January 2016 | ROMO Wind Introducing the spinner anemometer iSpin
  25. 25. #WindWebinar Page 25 High correlation between met mast and iSpin 21 January 2016 | ROMO Wind Introducing the spinner anemometer iSpin
  26. 26. #WindWebinar Page 26 Power curve comparison (1/2) Met mast Nacelle based LiDAR Nacelle anemometer iSpin Filtered for wake, air density and wind sector according to IEC standard. iSpin shows 30% less variation on wind speeds than met-mast and LiDAR Forward looking wind measurement Local wind measurement 21 January 2016 | ROMO Wind Introducing the spinner anemometer iSpin
  27. 27. #WindWebinar Page 27 Power curves and scatter (std. dev.) in undisturbed inflow 101 – 229 deg 0 500 1000 1500 2000 2500 0 5 10 15 20 25 Power[kW] Wind speed [m/s] Manufacturer SA Lidar Met-mast 0 20 40 60 80 100 120 140 160 180 0 5 10 15 20 Standarddeviation[kW] Wind speed [m/s] SA Lidar Met-mast Comparison with the IEC met mast measurement: iSpin 2 IEC: Δ = 0,4 % Lidar 2 IEC: Δ = -7,7 % Comparison with the warrantied power curve: IEC 2 PCw: Δ = 1,2 % iSpin 2 PCw: Δ = 1,6 % Lidar 2 PCw: Δ = -6,5 % 21 January 2016 | ROMO Wind Introducing the spinner anemometer iSpin
  28. 28. #WindWebinar Page 28 Power curves – undisturbed inflow 101 – 229 deg Power curves for turbines 2,3,4,5,6,10,11,12,13 Turbines 7,8,9 running in noise reduced mode – different power curves. Turbine 1 with different installation mode. Data #2,3,4,5,6: 7 Sep -> 22 Oct 2015 #1,10,11,12: 23 Sep -> 22 Oct 2015 0 500 1000 1500 2000 2500 Power[kW] Wind speed [m/s] Power curves - undisturbed inflow NKE02, AEP=9.196 GWh, 1.10% w.r.t MF NKE03, AEP=9.189 GWh, 1.02% w.r.t MF NKE04, AEP=9.244 GWh, 1.63% w.r.t MF NKE05, AEP=9.260 GWh, 1.81% w.r.t MF NKE06, AEP=9.077 GWh, -0.20% w.r.t MF NKE10, AEP=9.198 GWh, 01.12% w.r.t MF NKE11, AEP=9.130 GWh, 0.38% w.r.t MF NKE12, AEP=9.292 GWh, 2.16% w.r.t MF NKE13, AEP=9.0167 GWh, -0.88% w.r.t MF Manufacturer (MF) power curve Comparison with the IEC met mast measurement: iSpin 2 IEC: Δav. = 0,4 %; Δmax = 1,0 % Comparison with the warranted power curve: iSpin 2 PCw: Δav. = 1,3 %; Δmax = 2,2 % (except for NKE01 where sensor mounting was slightly different, 4.7%) 21 January 2016 | ROMO Wind Introducing the spinner anemometer iSpin
  29. 29. #WindWebinar Page 29 Power curve comparison (2/2) Met mast Nacelle based LiDAR Nacelle anemometer iSpin Forward looking wind measurement Local wind measurement No filtering for wind sector or wake. The nacelle anemometer power curve as seen in SCADA system. 21 January 2016 | ROMO Wind Introducing the spinner anemometer iSpin
  30. 30. #WindWebinar Page 30 Power curves and scatter (std. dev.) in undisturbed inflow 0 – 360 deg 0 500 1000 1500 2000 2500 0 5 10 15 20 25 Power[kW] Wind speed [m/s] Manufacturer SA Lidar Met-mast 0 100 200 300 400 500 600 0 5 10 15 20 25 Standarddeviation[kW] Wind speed [m/s] SA Lidar Met-mast Comparison with the IEC power curve measurement: iSpin 2 IEC*: Δ = 0,1 % *… IEC compliant in the free wind sectors only Comparison with the warrantied power curve: iSpin 2 PCw*: Δ = 1,63 % *… IEC compliant in the free wind sectors only 21 January 2016 | ROMO Wind Introducing the spinner anemometer iSpin
  31. 31. #WindWebinar Page 31 Power curves 0–360 deg including wakes Power curves for turbines 2,3,4,5,6,10,11,12,13 Turbines 7,8,9 running in noise reduced mode – different power curves (not shown) Turbine 1 – different installation mode Data #2,3,4,5,6: 7 Sep -> 22 Oct 2015 #1,10,11,12: 23 Sep -> 22 Oct 2015 0 500 1000 1500 2000 2500 Power[kW] Wind speed [m/s] Power curves 0-360 deg including wakes NKE02, AEP=9.179 GWh, 0.92% w.r.t MF NKE03, AEP=9.158 GWh, 0.69% w.r.t MF NKE04, AEP=9.214 GWh, 1.30% w.r.t MF NKE05, AEP=9.203 GWh, 1.18% w.r.t MF NKE06, AEP=9.056 GWh, -0.43% w.r.t MF NKE10, AEP=9.135 GWh, 0.43% w.r.t MF NKE11, AEP=9.079 GWh, -0.18% w.r.t MF NKE12, AEP=9.237 GWh, 1.56% w.r.t MF NKE13, AEP=8.967 GWh, -1.41% w.r.t MF Manufacturer (MF) power curve Comparison with the IEC met mast measurement: iSpin 2 IEC: Δav. = -0,3 %; Δmax = 0,4 % Comparison with the warranted power curve: iSpin 2 PCw: Δav. = 0,9 %; Δmax = 1,6 % (except for NKE01 where sensor mounting was slightly different, 4.7%) 21 January 2016 | ROMO Wind Introducing the spinner anemometer iSpin
  32. 32. #WindWebinar Summary: iSpin brings tangible and large benefits Page 32 Increased annual energy production: •  Possible to measure and correct static yaw alignments (~2.0 % AEP increase) •  Enables improved turbine operation to account for sector wise characteristics based on actual measurements (turbulence intensity, flow inclination, etc.) •  Enables assessment and documentation of the effects of other optimisation technologies by accurately measuring relative power curve changes •  Enables intervention if the wind turbine underperforms •  Some turbines can further increase the AEP by 0.2-1.5% by improving dynamic yaw problems. Requires collaboration with turbine manufacturer Prolonged turbine life time and reduced maintenance costs •  Correcting yaw misalignment reduces loads; stop decreasing life time and increasing maintenance costs of major components (rotor, drivetrain, gearbox) •  Optimised turbine operation resulting from measurement of damaging wind conditions (flow inclinations and turbulence intensity) in all wind sectors can also prolong life time and reduce maintenance costs 21 January 2016 | ROMO Wind Introducing the spinner anemometer iSpin
  33. 33. #WindWebinar Questions? Karl Fatrdla Head of Sales Romo Wind AG 619.606.8797 kf@romowind.com Michelle Froese Editor - Moderator Windpower Engineering mfroese@wtwhmedia.com @Windpower_Eng
  34. 34. #WindWebinar cos² relationship Page 34 Turbine comparison Relative power curve comparison Documented proof 21 January 2016 | ROMO Wind Introducing the spinner anemometer iSpin
  35. 35. #WindWebinar All turbine types suffer yaw misalignment – to varying degrees Page 35 Per turbine type 21 January 2016 | ROMO Wind Introducing the spinner anemometer iSpin
  36. 36. #WindWebinar Yaw misalignment measured with iSpin vs. lidar Page 3621 January 2016 | ROMO Wind Introducing the spinner anemometer iSpin
  37. 37. #WindWebinar Yaw misalignment measured with iSpin vs. lidar open sectors* Page 37 *Wind sectors with wake effects or terrain obstacles filtered out 21 January 2016 | ROMO Wind Introducing the spinner anemometer iSpin
  38. 38. #WindWebinar EFFECT OF O&M RE- CALIBRATION OF WIND SENSORS Page 3821 January 2016 | ROMO Wind Introducing the spinner anemometer iSpin
  39. 39. #WindWebinar RE-CALIBRATION OF WIND SENSORS Page 39 YM measured (degrees) YM after OEM recalibration Delta YM after recalibration Turbine #1 7,8 11,0 3,2 Turbine #2 1,8 4,6 2,8 Turbine #3 4,2 6,8 2,6 Turbine #4 3,8 4,8 1 Turbine #5 6,7 7,2 0,5 Turbine #6 8,7 8,3 -0,4 Turbine #7 8,6 7,8 -0,8 Turbine #8 7,9 7,0 -0,9 Turbine #9 11,9 11,0 -0,9 21 January 2016 | ROMO Wind Introducing the spinner anemometer iSpin
  40. 40. #WindWebinar Page 40 Relative power curve monitoring For 6m/s annual wind speed with Rayleigh wind distribution the increase would be around 5.5% 21 January 2016 | ROMO Wind Introducing the spinner anemometer iSpin
  41. 41. #WindWebinar Page 41 iSpin measurements not affected by vortex generator installation or yaw misalignment correction iSpin vs met mast Nacelle anemometer vs met mast 21 January 2016 | ROMO Wind Introducing the spinner anemometer iSpin
  42. 42. #WindWebinar iSpin Basic Page 42 Designed for: •  Turbine owners and operators who want to maximise the revenue from their installed base •  Permanent installation Data included in the quarterly reports: •  Static yaw misalignment Power supply: •  Fixed power supply in hub: 230 VAC, 24 VDC or 24 VAC (other by request) Service technician interface: •  SMS via mobile phone •  LEDs on the iSMB HW Requirements: •  Local SIM card for SMS and dial up data (2G or 3G GSM coverage) 3 x Spinner Anemometer Sensor Control Unit (Metek Box) Hub/rotor Nacelle Power supply Data Collection and Communication Unit 21 January 2016 | ROMO Wind Introducing the spinner anemometer iSpin
  43. 43. #WindWebinar iSpin Advanced Page 43 3 x Spinner Anemometer Sensor Control Unit (Metek Box) Hub/rotor Nacelle Power supply Data Collection and Communication Unit Designed for: •  Turbine owners and operators •  Permanent installation Data included in the quarterly reports: •  All values from iSpin Basic •  Wind speed •  Turbulence intensity •  Flow inclination •  Temperature Customer data interface: •  Modbus/TCP for online data •  FTP for historical data (10 min. avr.) ROMO data interface: •  Mita-Teknik Gateway Power supply: •  Fixed power supply in hub: 230 VAC, 24 VDC or 24 VAC (other by request) Service technician interface: •  Web browser with Java Requirements: •  Internet access via Broadband or local SIM card for 3G data (3G GSM coverage on site) Nacelle position Sensor (GPS) option 1* ROMO Wind Data Centre via Internet Nacelle power supply 230 VAC Nacelle position Sensor/ option 2* 21 January 2016 | ROMO Wind Introducing the spinner anemometer iSpin
  44. 44. #WindWebinar iSpin Advanced Plus Page 44 3 x Spinner Anemometer Sensor Control Unit (Metek Box) Hub/rotor Nacelle Power supply Data Collection and Communication Unit ROMO Wind Data Centre via Internet Nacelle power supply 230 VAC Nacelle position Sensor/ option 2* Nacelle position sensor (GPS) option 1* and Air pressure sensor Designed for: •  Turbine owners and operators •  Permanent installation Data included in the quarterly reports: •  All values from iSpin Advanced •  Air density •  Relative power curve Customer data interface: •  Modbus/TCP for online data •  FTP for historical data (10 min. avr.) ROMO data interface: •  Mita-Teknik Gateway Power supply: •  Fixed power supply in hub: 230 VAC, 24 VDC or 24 VAC (other by request) Service technician interface: •  Web browser with Java Requirements: •  Internet access via Broadband or local SIM card for 3G data (3G GSM coverage on site) 21 January 2016 | ROMO Wind Introducing the spinner anemometer iSpin
  45. 45. #WindWebinar Installation of iSpin in the spinner Page 45 •  Installed from the inside of the spinner in all kinds of weather conditions (120 degrees spacing) •  Spinner anemometer(s) aligned with the centre line •  Completed within 2 to 5 hours 21 January 2016 | ROMO Wind Introducing the spinner anemometer iSpin
  46. 46. #WindWebinar Installation of iSpin Advanced in the nacelle Page 46 •  Installation is independent of all other equipment in the wind turbine except for power in the spinner for iSpin Basic and power in the nacelle for iSpin Advanced / iSpin Advanced Plus. Collector Ring Fuse box Transformer 21 January 2016 | ROMO Wind Introducing the spinner anemometer iSpin
  47. 47. #WindWebinar q  This webinar will be available at www.windpowerengineering.com & email q  Tweet with hashtag #WindWebinar q  Connect with Windpower Engineering & Development q  Discuss this on EngineeringExchange.com Don’t Forget!
  48. 48. #WindWebinar

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