3. Life Detection Analysis

Nabla Wind Hub will carry out all aeroelastic simulations under design conditions and under site-specific conditions determining the loading maps and overall accumulative Fatigue damage spectra detecting design life for every turbine structural component, leading to the re-definition of components life according to site-specific wind and operation conditions.

This phase will provide the Life Expectancy of the turbine components per Calculation Cell, which, in combination with SCADA independent analysis for each unit and unit-Specific Weibull Distribution will conclude Life Expectancy PER UNIT, leading to the identification of the Selective Retrofits to be applied and full Life Extension Potential of the asset in different Scenarios, and providing a hierarchy of risk for each component.

Different techniques will be used for determining Life Expectancy:

• Damage Equivalent Loads for pure structural resistive components
• LDD - Load Duration Distribution based on combines torsion+bending moments for Rotatory Components (Drive Train and Bearings)

4. Uncertainties Analysis

An analysis of associated uncertainties PER COMPONENT will be carried out based on FMEA protocols (Failure Modes and Effects Analysis) developed by Nabla Wind Hub for the Life Analysis.

This Analysis will quantify associated uncertainty of different groups of inputs and processes in Life Assessment and Loads Calculation:

• Wind Farm Data
• Wind Conditions
• Operation and Maintenance
• Turbine Aeroelastic model
• Calculations and Reporting

Monitoring 241 parameters and scoring as a function of:

• Criticality of Data
• Source of Data
• Scenario Selection

Example of uncertainty analysis