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Mitigating Hurricane Risk for Offshore Wind Turbines

Learn how to quantify hurricane risk to offshore wind turbines and implement engineering changes to reduce vulnerability and improve turbine survival. Research findings highlight the importance of backup power, tower strength, and careful siting to minimize damage.

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Mitigating Hurricane Risk for Offshore Wind Turbines

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  1. Quantifying the Hurricane Risk to Offshore Wind Turbines Stephen Rose, Paulina Jaramillo, Jay Apt, Mitch Small, Iris Grossmann Carnegie Mellon University May 21st, 2012

  2. U.S. Has Good OffshoreWind Resources

  3. Wind Turbines are Vulnerable to HurricanesTyphoon Maemi, Okinawa, 2003 Takahara, et al (2004)

  4. We Fit a GEV Distribution to Hurricane Intensity

  5. We Model Probability of Tower Buckling by a Log-Logistic Function

  6. We Model Distribution of Turbines Destroyed in 20 Years • No replacement: Phase-Type distribution • Replacement: compound Poisson distribution Assumptions: - Single wind farm - Each turbine experiences same conditions

  7. Turbines Designed to Survive Category 1 Hurricane50-turbine wind farm

  8. Turbines Destroyed in 20 Years50-turbine wind farm Not yawing Yawing

  9. Turbines Destroyed in 20 Years50-turbine wind farm Not yawing Yawing

  10. Turbines Destroyed in 20 Years50-turbine wind farm Not yawing Yawing

  11. Turbines Destroyed in 20 Years50-turbine wind farm

  12. High-Category Hurricanes Cause Most Expected Damage

  13. Engineering Changes Can Reduce Risk • Backup power for yaw system • Survival depends on active system • Wind vane must survive • Turbine must yaw quickly • Stronger towers and blades • More steel in tower • More fiberglass in blades • 20 – 30% cost increase

  14. Careful Siting Can Reduce Risk

  15. Future Research: How Much Reserve Power is Needed?

  16. Quantifying the Hurricane Risk to Offshore Wind Turbines Stephen Rose, Paulina Jaramillo, Jay Apt, Mitch Small, Iris Grossmann Carnegie Mellon University May 21st, 2012

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