Method for feeding electrical power into an electricity supply network with a wind park and wind park with black start

A control apparatus for controlling feeding electrical power into an electrical supply network by a wind farm connected to the supply network via a network connection point, wherein the wind farm has a plurality of wind power installations, the control apparatus comprising:

• a capture means for determining whether the electrical supply network is operating;
• a signal generator for generating and transmitting a starting signal for starting the farm in a black-start mode for the purpose of producing electrical power for feeding into the supply network in the event the supply network is not operating;
• and
• a guide unit for guiding the at least one wind farm during black-start operation in which electrical power is fed into the supply network and the supply network is operated by the electrical power fed in,
• wherein at least one of:
• while in the black-start mode or during black-start operation, a network frequency of the supply network is specified by the feeding-in of the electrical power by the wind farm.

A wind farm comprising:

• a plurality of wind power installations;
• and
• a control apparatus coupled to the plurality of wind power installations, wherein the controller apparatus is configured to:
• determine whether an electrical supply network is operating;
• in the event the supply network is not operating, cause the plurality of wind power installations to start in a black-start mode to produce electrical power;
• and
• feed in the produced electrical power into the supply network such that the supply network is operated by the electrical power fed in, wherein a network frequency of the supply network is specified by the electrical power fed in.