Problem

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Curtailment of WTG due to overload of the blade

Solution requested

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Resist strong wind by enhancing the structural strength of the blades

Case details

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0.9 MW

Turbine

27m

Length

2012

Year of commision

Deliverables

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Technical opinion

Root cause analysis

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6 blades with D-Stiffener™

Case pictures

Results

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Structural strength of blade increased by 40%

AEP increase/WTG = 255 MWh/year

ROI = 18 months

Cases

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D-String®

Stopping crack development without structural repair

D-Stiffener™

Elimination of open trailing edge in mid span

Blade course

2 days advanced structural blade course