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New Methods for Accurately Detecting Lightning Strikes to Turbines

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Research has shown wind turbine blades are frequently struck by lightning and in some cases the same turbine is struck multiple times per year. Identifying which turbines were struck and when can lead to a targeted, more immediate inspection of the turbine blades vs. a broader, less timely approach of checking all turbines once per year. Identification of damage early is now easier than ever with new emerging technology like drones. Finding the damage can allow for quick repair while the expense is minor saving the costs of a major blade repair or replacement down the line.

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New Methods for Accurately Detecting Lightning Strikes to Turbines

  1. 1. #WindWebinar New Methods for Accurately Detecting Lightning Strikes to Turbines
  2. 2. #WindWebinar q  This webinar will be available afterwards at www.windpowerengineering.com & email q  Q&A at the end of the presentation q  Hashtag for this webinar: #WindWebinar Before We Start
  3. 3. #WindWebinar Michelle Froese Moderator Windpower Engineering & Development Nic Wilson Energy Regional Manager Vaisala Marty McKewon Director of Business Development, NA Indji Systems New Methods for Accurately Detecting Lightning Strikes to Turbines Meet your presenters…
  4. 4. #WindWebinar Agenda •  The Lightning Problem for Wind Turbines and the Financial Impact •  Tools for Identification and Analysis •  Leveraging Your Findings with Emerging Technology •  Applying the Technology to Your Business
  5. 5. #WindWebinar What if you could? •  Monitor the storm in real- time in relation to assets ? •  Do a post storm analysis of all lightning and see which turbines were hit? •  Do a next day inspection inexpensively ? •  Repair the minor damage now and save $$$$ ?
  6. 6. #WindWebinar The Lightning Problem – Financial Impact •  Lightning Damage = Significant Financial Impact 1.  Lightning strikes account for 25% of loss claims 2.  Most damage occurs to blades 3.  Blade claims average $240K
  7. 7. #WindWebinar The Lightning Problem •  Lightning Frequency in the United States. •  High Frequency in High Wind Production Areas
  8. 8. #WindWebinar The Lightning Problem •  In high lightning areas the likelihood for turbines to be struck multiple times increases •  Degradation occurs over time •  Likelihood for damage increases Image  from:  “Overview  of  a  Kansas  Wind  Farm  2013  Field  Program. Presented  at  the  23rd  Annual  Lightning  Detection  Conference,  Tucson  Arizona.
  9. 9. #WindWebinar The Lightning Problem… What the Future will Bring? •  Turbine Height Trend •  110-140 meter Turbines are coming •  What does that mean for the lightning problem? •  What does that mean for wind production?
  10. 10. #WindWebinar The Lightning Problem… What the Future will Bring?The Lightning Problem •  Wind production today •  Strong focus in the central United States
  11. 11. #WindWebinar The Lightning Problem… What the Future will Bring?The Lightning Problem •  How improvements in technology change the future of wind production
  12. 12. #WindWebinar The Lightning Problem… What the Future will Bring?The Lightning Problem •  Greatest areas of growth occur in geographic areas with greatest concentration of lightning! •  Now factor in even taller turbines = increased strikes and damage •  Climate change = more lightning?
  13. 13. #WindWebinar Tools for Identification •  NALDN and how it works. •  Accuracy •  Coverage
  14. 14. #WindWebinar How it works •  Detects the electromagnetic frequencies emitted by lightning •  Each sensor has a GPS timer and magnetic direction finder •  Data is sent to a central processor and displayed within 15 seconds of occurrence
  15. 15. #WindWebinar Accuracy & Coverage •  Precision (< 150 m location accuracy and > 90% detection efficiency) data is available in 50+ countries •  Vaisala GLD360 now provides (< 2 km location accuracy and > 70% detection efficiency) data across the entire world
  16. 16. #WindWebinar Tools for Identification and Analysis •  Ability to view event in real-time •  Observe the event in relation to your assets
  17. 17. #WindWebinar Tools for Identification and Analysis •  Ability to perform a post event analysis •  Time is a short commodity •  Methods must be fast •  Must be simple
  18. 18. #WindWebinar Tools for Identification and Analysis •  Example of methods available today 1.  Selection of asset type
  19. 19. #WindWebinar Tools for Identification and Analysis •  Example of methods available today 2. Select asset or wind farm
  20. 20. #WindWebinar Tools for Identification and Analysis •  Example of methods available today 3. Select the date and time
  21. 21. #WindWebinar Tools for Identification and Analysis •  Example of methods available today 4. Select a window of time to analyze
  22. 22. #WindWebinar Tools for Identification and Analysis •  Example of methods available today 4. Hit “Go” and within seconds you have your analysis!
  23. 23. #WindWebinar Interpreting the Results •  Did my turbine get hit? •  How strong was the strike? •  What is polarity?
  24. 24. #WindWebinar Interpreting the Results •  Taking analysis a step further. 1.  Lightning Ellipse data 2.  How is this useful?
  25. 25. #WindWebinar Interpreting the Results •  Daily reports can be generated •  Keep an accounting of a turbine struck repeatedly •  Valuable for collaborative decisions
  26. 26. #WindWebinar Leveraging your Findings with Emerging Technology •  The inspection world will change! •  The Drones are coming!
  27. 27. #WindWebinar Leveraging your Findings with Emerging Technology •  Drones will make inspections faster, easier and cheaper. •  Drones will increase safety of inspections!
  28. 28. #WindWebinar Leveraging your Findings with Emerging Technology •  3rd party providers 1.  growing list •  Do it yourself •  Inspections can be “on demand”
  29. 29. #WindWebinar Applying the Technology to Your Business •  Analysis of Lightning Data Matters! 1.  Find 25-30% more damaged blades 2.  Early ID = lower repair costs 3.  Minimize turbine downtime due to focused inspections
  30. 30. #WindWebinar Applying the Technology to Your Business •  Proven Solutions Exist Today! 1.  Simple, Fast and Easy Methods for Post Storm Analysis 2.  Accurate Data to Make Decisions 3.  Invest Now, Save Later
  31. 31. #WindWebinar What can you conclude? •  Lightning is a serious problem •  Technological advances will actually increase the problem •  Accurate blade inspections will become more important •  Technology is available today to mitigate the impact of Lightning
  32. 32. #WindWebinar Michelle Froese Moderator Windpower Engineering & Development mfroese@wtwhmedia.com Nic Wilson Energy Regional Manager Vaisala Nicholas.wilson@vaisala.com Marty McKewon Director of Business Development, NA Indji Systems marty.mckewon@indji.net New Methods for Accurately Detecting Lightning Strikes to Turbines Questions?
  33. 33. #WindWebinar Thank You 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

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