Method for operating a wind farm

A wind park for producing output power, wherein the wind park has a maximum permissible output power, the wind park comprising:

• a plurality of wind power installations, each wind power installation having an output power and a maximum rated output power;
• a processing unit, coupled to the plurality of wind power installations, to control the output power of at least one of the wind power installations, wherein the processing unit determines the total output power of all of the plurality of wind power installations and, in response thereto, controls the output power of at least one of the plurality of wind power installations so that the total output power of all of the plurality of wind power installations does not exceed the maximum permissible output power of the wind park.

A method of operating a wind park, the wind park having a maximum permissible output power, wherein the wind park includes a plurality of wind power installations, each wind power installation having an output power and a maximum rated output power, and wherein the plurality of wind power installations are arranged in at least two groups including a first group and a second group, the method comprising:

• controlling the output power of the first group of wind power installations so that each wind power installation of the first group provides an output power that is substantially equal to its maximum rated output power;
• controlling the output power of the second group of wind power installations including reducing the output power of at least one of the plurality of wind power installations in the second group of wind power installations if the total output power of the plurality of wind power installations exceeds the maximum permissible output power of the wind park.