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US 10,707,684 B2Granted
Method for feeding electrical power into an electrical supply network
AssigneeWobben Properies GmbH
InventorJohannes Brombach
Life of this patent
Estimating the term…
Abstract
A method for feeding electrical power at a network connection point into an electrical supply network by at least one wind power installation includes generating electrical power from wind, feeding the generated electrical power or a portion thereof into the electrical supply network, offering an instantaneous reserve for additionally feeding or reducing the feeding into the electrical supply network in order to support the electrical supply network, and additionally feeding electrical power or reducing the fed-in power up to the offered instantaneous reserve, depending on a network property and/or an external requirement. The method is operative to support the electrical supply network. A reserve level of the offered instantaneous reserve is settable as an offer level.
Claims19
A method for feeding electrical power at a network connection point into an electrical supply network by at least one wind power installation, the method comprising:
- generating electrical power from wind,
- feeding the generated electrical power or a portion of the generated electrical power into the electrical supply network,
- providing an instantaneous reserve for at least one of:
- additionally feeding or reducing the feeding of the generated electrical power or the portion of the generated electrical power into the electrical supply network, providing the instantaneous reserve being operative to support the electrical supply network, and
- additionally feeding electrical power or reducing the fed-in generated electrical power or the portion of the generated electrical power up to the provided instantaneous reserve and based on at least one of:
- a network property or an external requirement, wherein a reserve level of the instantaneous reserve is settable, wherein providing the instantaneous reserve at the reserve level includes at least one of:
- providing a rotational speed range for operating the at least one wind power installation with a rotational speed in the rotational speed range, wherein the rotational speed range and the rotational speed are selected such that a decrease in the rotational speed to a lower value of the rotational speed range causes the at least one wind power installation to provide the instantaneous reserve at the reserve level, wherein the instantaneous reserve is provided from rotational energy of the at least one wind power installation,
- providing a lower rotational speed and an upper rotational speed that is higher than the lower rotational speed by a rotational speed difference, and operating the at least one wind power installation at the upper rotational speed, wherein the rotational speed difference is selected such that decreasing the upper rotational speed to be closer to the lower rotational speed frees the rotational energy of the at least one wind power installation to be used as the instantaneous reserve at the reserve level,
- altering an operating point of the at least one wind power installation, or
- providing an electrical energy store configured to store energy that is retrievable at the reserve level.
7 more elements
A wind power installation for feeding electrical power at a network connection point into an electrical supply network, comprising:
- an aerodynamic rotor,
- a generator configured to generate electrical power from wind,
- a feed-in unit configured to feed the generated electrical power or a portion of the generated electrical power into the electrical supply network, and
- a controller configured to:
- provide an instantaneous reserve for feeding into the electrical supply network to support the electrical supply network,
- control the wind power installation such that the provided instantaneous reserve or a portion of the instantaneous reserve is fed into the electrical supply network based on at least one of:
- a network property or an external requirement to support the electrical supply network, and
- set a reserve level of the instantaneous reserve,
- wherein providing the instantaneous reserve at the reserve level includes at least one of:
- providing a rotational speed range for operating the wind power installation with a rotational speed in the rotational speed range, wherein the rotational speed range and the rotational speed are selected such that a decrease in the rotational speed to a lower value of the rotational speed range causes the wind power installation to provide the instantaneous reserve at the reserve level, wherein the instantaneous reserve is provided from rotational energy of the wind power installation,
- providing a lower rotational speed and an upper rotational speed that is higher than the lower rotational speed by a rotational speed difference, and operating the wind power installation at the upper rotational speed, wherein the rotational speed difference is selected such that decreasing the upper rotational speed to be closer to the lower rotational speed frees the rotational energy of the wind power installation to be used as the instantaneous reserve at the reserve level,
- altering an operating point of the wind power installation, or
- providing an electrical energy store configured to store energy that is retrievable at the reserve level.
10 more elements
A network control device for controlling a plurality of feed-in devices for feeding electrical power into an electrical supply network, wherein
- each feed-in device of the plurality of feed-in devices includes:
- at least one wind power installation configured to generate electrical power from wind,
- a feed-in unit configured to feed the generated electrical power or a portion of the generated electrical power via a network connection point into the electrical supply network, and
- a controller configured to:
- providing an instantaneous reserve for feeding into the electrical supply network to support the electrical supply network, and
- set a reserve level of the instantaneous reserve, and
- the network control device is configured to set a plurality of different reserve levels for the respective plurality of feed-in devices, comprises:
- a data transfer device configured to exchange data between the network control device and the plurality of feed-in devices,
- wherein providing the instantaneous reserve at the reserve level includes at least one of:
- providing a rotational speed range for operating the at least one wind power installation with a rotational speed in the rotational speed range, wherein the rotational speed range and the rotational speed are selected such that a decrease in the rotational speed to a lower value of the rotational speed range causes the at least one wind power installation to provide the instantaneous reserve at the reserve level, wherein the instantaneous reserve is provided from rotational energy of the at least one wind power installation,
- providing a lower rotational speed and an upper rotational speed that is higher than the lower rotational speed by a rotational speed difference, and operating the at least one wind power installation at the upper rotational speed, wherein the rotational speed difference is selected such that decreasing the upper rotational speed to be closer to the lower rotational speed frees the rotational energy of the at least one wind power installation to be used as the instantaneous reserve at the reserve level,
- altering an operating point of the at least one wind power installation, or
- providing an electrical energy store configured to store energy that is retrievable at the reserve level.
10 more elements
Dependencies are inferred from the claim text.