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What Stock Prices and Wind Loads Have in Common
Extreme loads that occur only once or a few times in the life of a wind turbine play an important role in the design process. The time series of loads typically look like a mixture of oscillations and random fluctuations, the latter caused by the turbulent wind. From the fluctuating time series we need to be able to determine reliable loads equipped with probabilistic properties like ‘exceeded on average once within 50 years’. For a long time the methods used to determine ultimate loads for wind turbines have been relatively simplistic. However, nowadays, because of increasing turbine size and value, more sophisticated methods are recommended. In this article we give an introduction to extreme value theory that provides the tools to determine ultimate loads and also introduce our computer program GumbelWind as a tool for the practical application of the theory.
By M. Hänler and U. Ritschel, Windrad Engineering GmbH, Germany
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Identifying Promising Areas for Wind Farm Installation and Energy Prediction
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- Category: Articles
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- Category: Articles
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- Category: Articles
- Technology to Catch the Wind
- Sahara Wind’s Integrated Development Approach
- Wind Energy and Hydrogen Balancing
- Damage on Wind Turbines
- Brakes in Modern Wind Turbines
- A Fresh Breeze for Gears
- GyroTorque, Continuously Variable Transmission (GTCVT)
- Cost of Lost Production
- The Sound of an Endless Train
- SmartEnergy Spire
- A Motion Compensated Platform for Wind Turbine Maintenance
- Zephyr’s ‘Airdolphin’
- Increased Performance by Condition Monitoring of Rotor Blades
- Offshore Winds Observed from Space
- Improving Wind Energy’s Market Penetration
- Measurement at 80 Metres with a New Design Wind Mast
- Turbine Shortages and Rising Costs Stall Development
- Aerodynamic Damping
- Sharing the Sea
- Offshore Wind Farm Layout Optimisation
- New BAUER Flydrill system
- Investigation of Stability Effects of an Offshore Wind Turbine
- AeroBlade
- Geotechnical Analysis Requirements
- Electric Vehicles with V2G
- The Benefits of Cooperation
- The Atmospheric Vortex Engine
- Acoustical Behaviour of a Wind Turbine
- Railwind Turbine
- Computational Fluid Dynamics
