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US 11,078,887 B2Granted
Method for operating a wind farm
AssigneeNordex Energy GmbH
InventorGeorg Grosseholz
Life of this patent
Estimating the term…
Abstract
A method for operating a wind farm having a plurality of wind turbines that are able to be driven and/or able to be set in response to a received setpoint value of a power-related electrical variable in order to output a power, wherein the method allots an amount of power to be distributed iteratively over the wind turbines taking into account minimum power limits of the wind turbines.
Claims17
A method for operating a wind farm having a plurality of wind turbines that are adapted to be controlled in response to a received setpoint value of a power-related electrical variable in order to output a power, the method comprising the steps of:
- a) determining an amount of power to be distributed over the wind turbines in dependence upon a setpoint power for the wind farm and on minimum power limits of individual ones of the plurality of wind turbines;
- b) generating a first weighted distribution that assigns a respective portion of the amount of power to be distributed to the individual ones of the plurality of wind turbines;
- c) defining a setpoint value for each of the wind turbines that are able to output as much power as was assigned to them by the first weighted distribution or less, wherein each of the setpoint values is defined on a basis of a currently available power of a corresponding wind turbine, wherein each of the setpoint values are defined such that the corresponding wind turbines are each controlled to output the currently available power but at least to output the minimum power of the corresponding wind turbine;
- d) determining a remaining amount of power still to be distributed;
- e) generating a further weighted distribution that assigns a respective portion of the remaining amount of power to remaining ones of the plurality of wind turbines that, on the basis of a currently available power of corresponding ones of the plurality of wind turbines, are able to output more power than was assigned to them by a directly preceding previous weighted distribution;
- f) defining further setpoint values for the remaining ones of the plurality of wind turbines that, on a basis of a currently available power of corresponding ones of the plurality of wind turbines, are able to output as much power as was assigned to them by the further weighted distribution or less, wherein the further setpoint values are defined such that corresponding wind turbines are each controlled to output the currently available power of corresponding ones of the plurality of wind turbines;
- g) determining whether a stop condition for the method is met, wherein steps d) to f) are repeated until the stop condition for the method has been met;
- and,
- h) providing the defined setpoint values to the corresponding ones of the plurality of wind turbines of the wind farm.
6 more elements
A wind farm comprising:
- a plurality of wind turbines;
- at least one control unit configured to:
- a) determine an amount of power to be distributed over said plurality of wind turbines in dependence upon a setpoint power for the wind farm and on minimum power limits of individual ones of said plurality of wind turbines;
- b) generate a first weighted distribution that assigns a respective portion of the amount of power to be distributed to the individual ones of said plurality of wind turbines;
- c) define setpoint values for a first subset of said plurality of wind turbines that are able to output as much power as was assigned to them by the first weighted distribution or less, wherein each of the set point values is defined on a basis of a currently available power of a corresponding wind turbine, wherein each of the setpoint values are defined such that said subset of said plurality of wind turbines are each controlled to output the currently available power but at least to output the minimum power of the corresponding wind turbine;
- d) determine a remaining amount of power still to be distributed;
- e) generate a further weighted distribution that assigns a respective portion of the remaining amount of power to a second subset of said plurality of wind turbines that are able to output more power than was assigned to them by a directly preceding previous weighted distribution based on a currently available power of corresponding ones of said second subset;
- f) define further setpoint values for remaining ones of said plurality of wind turbines that are able to output as much power as was assigned to them by the further weighted distribution based on a currently available power of each of the remaining ones of said plurality of wind turbines or less, wherein the further setpoint values are defined such that said remaining ones of said plurality of wind turbines are each controlled to output the currently available power of corresponding ones of the remaining ones of said plurality of wind turbines;
- g) determining whether a stop condition for the method has been met, wherein steps d) to f) are repeated until the stop condition is met;
- and,
- h) provide the defined setpoint values to the corresponding ones of said plurality of wind turbines of the wind farm;
- wherein said at least one control unit is a control unit superordinate to said plurality of wind turbines.
9 more elements
Dependencies are inferred from the claim text.