Method of operating a wind turbine

A wind turbine assembly comprising:

• a wind turbine having at least one component subject to a load;
• a wind turbine controller having a processor and being operatively connected to said at least one component;
• a non-transitory computer readable storage medium having program code stored thereon, wherein said program code, when executed by said processor of said wind turbine controller, is configured to:
• a. operate the wind turbine over an operating period in accordance with a control strategy;
• b. provide one or more input values representing the load acting on the at least one component of the wind turbine and providing uncertainties of the input values;
• c. determine, based on the input values, an aggregated load value representing an aggregated load acting on the at least one component of the wind turbine over an aggregation period;
• d. determine, based on the uncertainties of the input values, an uncertainty of the aggregated load value;
• e. determine a statistical load aggregate from the aggregated load value and the uncertainty of the aggregated load value;
• and,
• f. adjust the control strategy based on the statistical load aggregate.

A wind farm comprising:

• at least one wind turbine having at least one component subject to a load;
• a wind farm controller having a processor and being operatively connected to said at least one component;
• and,
• a non-transitory computer readable storage medium having program code stored thereon, wherein said program code, when executed by said processor of said wind farm controller, is configured to:
• a. operate the at least one wind turbine over an operating period in accordance with a control strategy;
• b. provide at least one input value representing the load acting on the at least one component of the at least one wind turbine and providing uncertainties of the at least one input value;
• c. determine, based on the input values, an aggregated load value representing an aggregated load acting on the at least one component of the at least one wind turbine over an aggregation period;
• d. determine, based on the uncertainties of the at least one input value, an uncertainty of the aggregated load value;
• e. determine a statistical load aggregate from the aggregated load value and the uncertainty of the aggregated load value;
• and,
• f. adjust the control strategy based on the statistical load aggregate.