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The Full Life Analysis (P90) shows how the site specific conditions are affecting the turbine components and obtain a Life Expectancy for the turbine structural components, modeling in detail the mechanical fatigue degradation of the structures according to the turbine morphology, site conditions, detail operation conditions and type of materials.
The Full Life Analysis (P90) shows how the site specific conditions are affecting the turbine components and obtain a Life Expectancy for the turbine structural components, modeling in detail the mechanical fatigue degradation of the structures according to the turbine morphology, site conditions, detail operation conditions and type of materials
Such Analysis consists of several tasks:
1. Wind Detail Conditions Modeling
A detailed wind conditions analysis is necessary to best determine wind flow conditions on the turbines, calculating the real turbulence, wind shear, inflow angles and local Weibull distributions, proving optimal input for Aeroelastic Loads Calculation per calculation Cell.
2. Operation Conditions Modeling
A detailed operation conditions analysis is necessary to best determine real operation on the turbines in terms of:
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:
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:
Monitoring 241 parameters and scoring as a function of:
Example of uncertainty analysis
|Blade - pitch bearing - hub bolts||12%|
|Pitch Actuators and Supports||12%|
|Main Bearing Suports||12%|
|Main Frame Mounting||12%|
|Yaw Bearing Supports||14%|