Method and a system for controlling operation of a wind turbine

A system for controlling operation of a wind turbine, the system comprising:

• a failure mode analyzer adapted to determine a failure mode for at least one component of the wind turbine;
• a lifetime calculator adapted to determine a remaining lifetime of the component under current operating conditions;
• a control unit adapted to determine a plurality of control schemes to control the operation of the wind turbine in order to adjust the remaining lifetime of the component to a desired remaining lifetime based at least in part on the estimated remaining lifetime of the component under current operating conditions that allows the component to function until a selected future date;
• and
• a cost evaluator adapted to determine a power production yield for each of the control schemes.

A wind power plant comprising:

• at least one wind turbine;
• and
• a monitoring unit, the monitoring unit comprising:
• a failure mode analyzer adapted to determine a failure mode for at least one component of the wind turbine;
• a lifetime calculator adapted to determine a remaining lifetime of the component under current operating conditions;
• a control unit adapted to determine a plurality of control schemes to control the operation of the wind turbine in order to adjust the remaining lifetime of the component to a desired remaining lifetime based at least in part on the estimated remaining lifetime of the component under current operating conditions that allows the component to function until a selected future date;
• and
• a cost evaluator adapted to determine a power production yield for each of the control schemes.