DE102021115860A1 - Method and device for allocating electric power to a power generation unit, computer program product and storage medium - Google Patents

Abstract

The invention relates to a method for allocating electric power to a power generation unit (11, 12, 13), comprising the steps of: determining a first power signature (14) of a first electric current which is generated by a first power generation unit (11), determining a further current signature (15, 16) of a further electric current which is generated by a further current generation unit (12, 13), and evaluating the determined first current signature (14) and the determined further current signature (15, 16) in order to assign the first current to the first power generation unit (11) and/or for assigning the further power to the further power generation unit (12, 13). The invention also relates to a device (20) and a computer program product (33) for carrying out the method according to the invention and a computer-readable storage medium (34) on which a computer program product (33) according to the invention is stored.

Description

The present invention relates to a method and a device for allocating electrical power to a power generation unit and in particular for allocating electrical currents to different power generation units in a power grid. The invention also relates to a computer program product for carrying out such a method and a storage medium on which such a computer program product is stored.

Various methods and devices for operating a power grid and for operating various functional units in the power grid are known in the prior art. The functional units can be understood to mean power generation units such as coal-fired power plants, hydroelectric power plants, wind power plants or wind farms, solar power plants or solar parks and nuclear power plants, electricity consumers such as industrial plants, private households and individual electrical appliances as well as various switching and conversion units for conducting and converting the current or corresponding electrical signals . With currently available systems, it is not possible to determine with a sufficiently high degree of accuracy and/or in a simple manner away from the power generation units which consumer is receiving which power from which power generation unit at what time. An electricity supplier can offer a certain type of electricity to an electricity consumer or electricity buyer. Nevertheless, the current consumer cannot be informed in the desired simple and/or reliable manner as to which electricity and/or which type of electricity he is drawing or could draw at what point in time. The distribution and/or use of the available streams is therefore only correspondingly restricted and/or possible with complex solution approaches.

The object of the present invention is to at least partially take account of the problems described above. In particular, it is an object of the present invention to provide a method and a device for allocating electric power to a power generation unit in order to be able to better use and/or distribute different currents or power from different power generation units and/or improve transparency when Offering different types of electricity and/or creating electricity from different power generation units.

The above object is solved by the patent claims. In particular, the above object is achieved by the method according to claim 1, the device according to claim 11, the computer program product according to claim 14 and the storage means according to claim 15. Further advantages of the invention result from the dependent claims, the description and the figures. Features that are described in connection with the method also apply, of course, in connection with the device according to the invention, the computer program product according to the invention, the storage means according to the invention and vice versa, so that the disclosure of the individual aspects of the invention is and/or is always referred to mutually can.

• - Ermitteln einer ersten Stromsignatur eines elektrischen ersten Stroms, der durch eine erste Stromerzeugungseinheit erzeugt wird,
• - Ermitteln einer weiteren Stromsignatur eines elektrischen weiteren Stroms, der durch eine weitere Stromerzeugungseinheit erzeugt wird, und
• - Auswerten der ermittelten ersten Stromsignatur und der ermittelten weiteren Stromsignatur zum Zuordnen des ersten Stroms zur ersten Stromerzeugungseinheit und/oder zum Zuordnen des weiteren Stroms zur weiteren Stromerzeugungseinheit.

According to a first aspect of the present invention, a method for allocating electrical power to a power generation unit, in particular for allocating electrical currents to different power generation units in a power grid, is made available. The procedure has the following steps:

• - determining a first current signature of an electrical first current which is generated by a first current generating unit,
• - determining a further current signature of a further electric current which is generated by a further current generating unit, and
• - Evaluation of the determined first current signature and the determined further current signature for assigning the first current to the first current generation unit and/or for assigning the further current to the further current generation unit.

In tests within the scope of the present invention, it was recognized that currents from different current generation units have different current signatures that can accordingly be distinguished from one another. For example, the power signature of power coming from a wind farm differs from a power signature of power coming from a nuclear power plant. This knowledge is now being used to reassign different streams to the associated power generation units after they have been transmitted. Based on this assignment, the received streams or the stream from different power generation units can be advantageously managed, ie distributed and/or used. In addition, a high degree of transparency can thus be created in a simple manner when different types of electricity are offered and/or electricity from different electricity generation units.

The further stream can be understood to mean at least one further stream, ie stream from at least one further power generation unit. In other words, the method is not limited to evaluating power from only two power generation units. The first power generation unit is spaced apart from the further power generation unit. In particular, the first power generation unit as a power plant or a corresponding power generation unit and/or power source at one location, for example in a city or in a district, and the further power generation unit as a power plant or a corresponding power generation unit and/or power source at another location , for example in another city or in another part of the city. The power grid may include a high-voltage power grid, a medium-voltage power grid, and/or a low-voltage power grid. The power grid is therefore preferably to be understood as meaning a cross-location power grid, ie in particular not a domestic power grid or a power grid within an electrical device.

The electricity can be assigned to the associated electricity generation unit on the basis of or using the respective electricity signature. In addition to the current signature, however, other parameters and/or operating states can also be taken into account. This means that the power does not have to be assigned to a power generation unit solely on the basis of the respective power signature. Assigning can be understood to mean bringing the electricity generated into connection with the associated electricity generation unit. In other words, it is determined using the respective current signature, in particular remote from the respective power generation unit, for example in the case of a power consumer and/or a device decentralized by the power generation unit, which power was generated by which power generation unit. The determination result or the corresponding association can be stored and/or buffered in a computer-readable memory and used for further method steps, for example for displaying the determined association remote from the power generation units.

A current signature can be understood as a time course of the respective current. A current signature can also be defined by a specific current strength at a specific point in time and/or over a specific period of time. The current signature can be evaluated directly or indirectly to assign the current. This means that, for example, current signatures of output signals from a converter can also be evaluated. Current signatures of output signals from a converter can be understood to mean time profiles of electrical currents that are output by the converter for the power supply of an electrical consumer. In order to assign the respective stream, it or the corresponding stream output signals can be analyzed. A transformation of the respective current signature can also be carried out as part of the analysis or evaluation of a current signature. The transformed current signature can then be evaluated in at least one frequency band. The current signature can be transformed at least by means of a Fourier transformation, in particular by means of a fast Fourier transformation (FFT). In addition, the transformation can be performed using a filter function. The use of a Fourier transformation and/or a fast Fourier transformation enables the current to be assigned precisely to the associated current generation unit, for example using predefined and/or predefinable changes in the Fourier spectrum of the recorded output or current signals. The use of a filter function advantageously enables interference signals to be filtered out and thereby simplifies the analysis of the Fourier spectrum.

Evaluating the electrical current can be understood to mean analyzing the electrical current and/or corresponding current and/or output signals. In particular, electric power or corresponding power and/or output signals from different power generation units or different power sources are evaluated.

According to a further embodiment of the present invention, it is possible for the first current signature to be evaluated for assigning a current type to the first current and/or for the further current signature to be evaluated for assigning a current type for the further current. By means of the current signature, conclusions can not only be drawn about the current generation unit, but also about the type of current generated by the respective current generation unit. By means of the electricity signature, it can be determined and/or assigned, for example, whether the electricity was generated using wind power, nuclear power, solar energy or hydropower. With this knowledge, the electricity generated can be managed or used and/or distributed in a particularly advantageous manner. The type of current can be determined in a particularly simple and reliable manner by using the current signature.

In order to determine the current type, at least one reference current signature can be provided in a method according to the present invention be provided, wherein a current type is assigned to the first current based on a comparison between the first current signature and the reference current signature and/or the further current is assigned a current type based on a comparison between the further current signature and the reference current signature. This means that a comparison between the first current signature and a first reference current signature and a comparison between the further current signature and a further reference current signature can be carried out. It is also possible for the first current signature and/or the further current signature to be compared with a number of different reference current signatures, for example with reference current signatures for current generated using wind power, hydropower, nuclear power, solar energy and coal-fired power. If the first electricity was generated by wind power, for example, and has a corresponding electricity signature, this can be found out by comparisons with a wind power reference electricity signature, a hydropower reference electricity signature, a nuclear power reference electricity signature and/or a solar energy reference electricity signature will. Based on the respective comparison and/or comparisons, the type of current involved can be determined easily, quickly and with a high level of certainty. In this context, a comparison can also be understood as carrying out a calculation for assigning the respective type of current using the at least one reference current signature.

In a method according to the invention, it is also possible for a geoposition of the first electricity generation unit and/or a geoposition of the additional electricity generation unit to be determined and/or provided and when assigning the first electricity to the first electricity generation unit and/or when assigning the additional electricity to the additional electricity generation unit Geoposition of the first power generation unit and / or the geoposition of the other power generation unit are used. The geoposition can be understood to mean a location and/or a position of the respective power generation unit defined, for example, by means of coordinates. For example, by using the geo-position, the electricity can not only be assigned to a wind farm, but to a specific wind farm at a certain location. This knowledge can also be advantageous for the further use and/or distribution of the electricity generated in this wind farm. On the basis of the detected current and/or the current signature, it is also possible to infer malfunctions in this wind farm, which is mentioned by way of example, and to react accordingly. In addition to the geoposition, a GPS time of the first power generation unit and/or a GPS time of the additional power generation unit can also be determined and/or provided and used when assigning the first power to the first power generation unit and/or when assigning the additional power to the additional power generation unit .

According to a further variant of the present invention, it is possible for a method to determine weather conditions at a time when the first electricity is generated in the area of the first electricity generation unit and/or weather conditions at a time when electricity is generated for the further electricity in the area of the further electricity generation unit and /or are provided and when assigning the first power to the first power generation unit and/or when assigning the additional power to the additional power generation unit, the weather conditions in the area of the first power generation unit and/or the weather conditions in the area of the additional power generation unit are taken into account and/or used. Weather conditions can be used to verify the mapping performed. If, for example, the electricity signature determined indicates that large amounts of electricity should come from a wind farm, but according to the ascertained and/or provided weather conditions there is no calm in the area in question, an error in the allocation of the electricity can be concluded and/or a check of the assignment can then be initiated. Likewise, high current values can be confirmed by recognizing a stormy day. In this way, the respective current can be assigned in a particularly reliable and/or error-resistant manner.

In addition, it is possible for the first stream and/or the further stream to be offered to a power consumer in a method according to the invention depending on the assignment to the respective power generation unit. The use and/or distribution of the current can thus advantageously be automated. On the basis of the present assignment, green electricity generated by wind power, solar energy and/or hydroelectric power can, for example, be sent exclusively to predefined households and/or electricity consumers and/or be offered to them. Offering can be understood as meaning a human-perceptible and/or computer-readable offering.

In addition, it is possible that in a method according to the present invention the first current and/or the further current is used by a current consumer depending on the assignment to the respective current generation unit. This also allows the desired use and/or distribution in a simple and reliable manner development of the available electricity can be controlled. For example, the electricity can only be used and/or further distributed if it was generated from a renewable energy source, for example by means of wind power in a wind turbine.

In a method according to the invention, a geoposition of the first electricity generation unit and/or the additional electricity generation unit can also be determined and/or provided, with the first electricity and/or the additional electricity depending on the geoposition of the first electricity generation unit and/or depending on the geoposition of the others Power generation unit offered to the electricity consumer and / or used by electricity consumers. In this way, too, the use and/or the distribution of the current can advantageously be automated. For example, a specific current and/or a specific type of current from a specific region can only be offered to households and/or electricity consumers in a specific region, for example the same region, and/or a correspondingly predefined or predefinable region.

According to a further embodiment of the present invention, it is possible for a current time to be determined or provided and the first current and/or the further current to be offered to the electricity consumer and/or used by the electricity consumer depending on the current time. This also represents a means of advantageously automating the targeted use of electricity and/or electricity distribution. For example, electricity consumers can no longer be offered electricity from a solar park in the evening and/or just before sunset, since it can be assumed that they will not be able to do so in the near future or can no longer supply sufficient power. A hydroelectric power station can be mentioned as a further example, in which the supply and/or distribution of electricity can be regulated depending on dam opening times.

Alternatively or additionally, weather conditions can be determined and/or provided at a point in time when power is generated for the first power in the area of the first power generation unit and/or weather conditions at a point in time when power is generated for the further power in the area of the further power generation unit, with the first power and/or or the additional electricity is offered to the electricity consumer and/or used by the electricity consumer depending on the weather conditions in the area of the first electricity generation unit and/or depending on the weather conditions in the area of the further electricity generation unit. A targeted use of electricity and/or electricity distribution can also be advantageously automated in this way. For example, only electricity from a wind park on particularly windy days and/or only electricity from a solar park on particularly sunny days can be offered and/or used. A particularly effective and efficient use of electricity can thus be achieved. In addition, this can prevent or at least reduce problems and/or damage in power generation units caused by undesired peak loads.

• - eine Ermittlungseinheit zum Ermitteln einer ersten Stromsignatur eines elektrischen ersten Stroms, der durch eine erste Stromerzeugungseinheit erzeugt wird sowie zum Ermitteln einer weiteren Stromsignatur eines elektrischen weiteren Stroms, der durch eine weitere Stromerzeugungseinheit erzeugt wird, und
• - eine Auswerteeinheit zum Auswerten der ermittelten ersten Stromsignatur und der ermittelten weiteren Stromsignatur zum Zuordnen des ersten Stroms zur ersten Stromerzeugungseinheit und/oder zum Zuordnen des weiteren Stroms zur weiteren Stromerzeugungseinheit.

According to a further aspect of the present invention, an allocation of electric power to one or at least one power generation unit is provided. The device includes:

• - a determination unit for determining a first current signature of a first electrical current that is generated by a first current generation unit and for determining a further current signature of a further electrical current that is generated by a further current generation unit, and
• - an evaluation unit for evaluating the determined first current signature and the determined further current signature for assigning the first current to the first current generation unit and/or for assigning the further current to the further current generation unit.

The device is configured and designed in particular for carrying out a method as described in detail above. The device according to the invention thus brings with it the same advantages as have been described in detail with reference to the method according to the invention. The assignment can be carried out by the evaluation unit. Alternatively, the device can have an assignment unit for carrying out the respective assignment.

The evaluation unit can be configured such that the first current signature is evaluated to assign a current type to the first current and/or the additional current signature is evaluated to assign a current type to the additional current. Furthermore, the device can have a comparison unit for comparing the respective current signature with at least one reference current signature, wherein the evaluation unit can be configured to assign a current type to the first current based on a comparison between the first current signature and the at least one reference current signature and/or the further current is assigned a current type based on a comparison between the further current signature and the at least one reference current signature. The evaluation unit can also be configured, when assigning the first stream to the first th power generation unit and / or to use the geo-position of the first power generation unit and / or the geo-position of the other power generation unit when assigning the other power to the other power generation unit. In addition, the evaluation unit can be configured such that the weather conditions in the area of the first power generation unit and/or the weather conditions in the area of the other power generation unit are taken into account when assigning the first power to the first power generation unit and/or when assigning the additional power to the additional power generation unit . Furthermore, the device and/or an electricity provider unit of the device can be configured to supply the first electricity and/or the additional electricity to an electricity consumer depending on the assignment to the respective electricity generation unit, depending on the geoposition of the first electricity generation unit, depending on the geoposition of the additional electricity generation unit to offer, use and/or distribute to the electricity consumer based on the current time, depending on the weather conditions in the area of the first power generation unit and/or depending on the weather conditions in the area of the further power generation unit. The determination unit can be configured to determine the respective geo-position, the respective weather conditions and/or the respective time.

A device according to the present invention may further comprise a display unit for displaying the first power generated with respect to the first power generation unit and/or for displaying the further power generated with respect to the further power generation unit. This can be understood to mean, for example, the display of the first current as current generated by wind power with a visual and/or computer-readable reference to the specific wind turbine in which the current was generated. The display unit can be understood as a display at a gas station and/or charging station for displaying the different types of electricity from different, associated power plants and/or a display of a mobile device and/or a corresponding visualization from an app or website. A particularly economical power distribution and/or use of power can be achieved in this way. Types of electricity to be preferred from a technical point of view and/or electricity from specific electricity generation units to be preferred can be highlighted and/or identified by the display means for the perception of the user and/or a computing unit. The device and/or the display means can be configured accordingly. Preference is given to electricity, a type of electricity and/or an electricity generation unit, for example when a particularly large amount of electricity is available from this electricity, this type of electricity and/or in this electricity generation unit or a corresponding amount of electricity is generated. In this way, peak loads and consequent damage to the power generation units can be prevented or reduced.

Furthermore, a computer program product is proposed which comprises instructions which cause a device as described in detail above to execute the method described. In addition, a computer-readable, in particular non-volatile storage medium is made available, on which such a computer program product is stored.

A further aspect of the invention relates to a computer program product, comprising instructions which cause that with a as described above. Thus, the computer program product according to the invention and the storage means also have the advantages described above. The computer program product may be implemented as computer-readable instruction code in any suitable machine and/or programming language, such as JAVA, C++, C, Assembler, C#, and/or Python. The computer program product can be stored on a storage medium such as a data disk, a removable drive, or a built-in memory/processor. The instruction code can program a computer or other programmable device, such as a controller, to perform the desired functions. Furthermore, the computer program product can be and/or be provided on a network such as the Internet, from which it can be downloaded by a user when required. The computer program product can be and/or be implemented both by means of software and by means of one or more special electronic circuits, ie in hardware or in any hybrid form, ie by means of software components and hardware components.

Further measures improving the invention result from the following description of various exemplary embodiments of the invention, which are shown schematically in the figures. All of the features and/or advantages resulting from the claims, the description or the figures, including structural details and spatial arrangements, can be essential to the invention both on their own and in the various combinations.

• 1 ein Blockschaltbild zum Beschreiben der Funktion einer Vorrichtung gemäß einer bevorzugten Ausführungsform der vorliegenden Erfindung,
• 2 ein Blockschaltbild zum Beschreiben der Funktion einer erfindungsgemäßen Anzeigeeinheit,
• 3 ein Blockschaltbild zum Darstellen eines erfindungsgemäßen Speichermittels, und
• 4 ein Flussdiagramm zum Erläutern eines erfindungsgemäßen Verfahrens.

They each show schematically:

• 1 a block diagram for describing the function of a device according to a before preferred embodiment of the present invention,
• 2 a block diagram for describing the function of a display unit according to the invention,
• 3 a block diagram for representing a storage means according to the invention, and
• 4 a flow chart for explaining a method according to the invention.

Elements with the same function and mode of operation are each provided with the same reference symbols in the figures.

1 shows a device 20 for assigning electric power or electric currents to different power generation units 11, 12, 13. More precisely, the device 20 is for assigning a first power to a first power generation unit 11, a second power to a second power generation unit 12 and a third Current to a third power generation unit 13 configured. For this purpose, device 20 has a determination unit 31 for determining a first current signature 14 of the first electrical current in a first power line 24, which is generated by the first power generation unit 11, for determining a second current signature 15 of a second electrical current in a second power line 25, the is generated by the second power generation unit 12 and for determining a third power signature 16 of an electrical third current in a third power line 26, which is generated by the third power generation unit 13. In addition, device 20 has an evaluation unit 32 for evaluating the determined first current signature 14 to assign the first current to the first current generation unit 11, for evaluating the determined second current signature 15 for assigning the second current to the second current generation unit 12 and for evaluating the determined third current signature 16 Assigning the third power to the third power generation unit 13 on.

The device 20 can be viewed as a computer and/or control device with a computer program product 33 installed therein, the computer program product 33 being implemented for executing, in particular for automatically executing, the functions of the device 20 .

At the in 1 example shown, the first power generation unit 11 is a wind farm, the second power generation unit 12 is a solar farm and the third power generation unit 13 is a nuclear power plant. Each power generation unit 11 , 12 , 13 transmits a specific power signature 14 , 15 , 16 which can be determined by the determination device 31 and evaluated by the evaluation unit 32 . In the 1 The device 20 shown also has a display unit 36, through which the current signatures 14, 15, 16 evaluated by the evaluation unit 32 and the associated currents are assigned to the respective current generation units 11, 12, 13.

The display unit 36 is in 2 shown in more detail. The display unit 36 in 2 can be provided at a gas station as a display or on the display of a charging station or in a smart device as a display or on the display as a visualized display unit 36 of a correspondingly programmed app and/or website. The different currents and in particular the current types 21, 22, 23 can be assigned to the different current generation units 11, 12, 13 by the display unit 36 in such a way that they are displayed side by side and for an observer with a clear reference to one another. The first type of current 21 generated by wind energy can be assigned to a first pictogram 11' of the first power generation unit 11, the second type of current 22 generated by solar energy can be assigned to a second pictogram 12' of the second power generation unit 12 and the third type of current 23 generated by nuclear power a third pictogram 13 ′ of the third power generation unit 13 can be assigned.

3 shows a computer-readable and non-volatile storage means 34 with a computer program product 33 stored thereon 1 and 4 is explained. In a first step S1, a first current signature 14 of a first electric current that is generated by the first current generation unit 11, a second current signature 15 of a second electric current that is generated by the second current generation unit 13, and a third current signature 16 of a third electric current Current generated by the third power generation unit 13 is determined. In a second step S2, the current signatures 14, 15, 16 determined are evaluated in order to assign the respective currents to the associated current generation units 11, 12, 13. In a third step S3, the streams are now offered depending on the assignment to the respective power generation unit 11, 12, 13 and/or used by a power consumer. For example, electricity is only offered to, or used and/or consumed by, a specific household as a possible electricity consumer if it comes from renewable energy sources, such as wind power, for example. Hydroelectric power and/or solar energy was generated.

In addition to the illustrated embodiments, the invention permits further principles of design and implementation. That is, the invention should not be considered limited to the exemplary embodiments explained with reference to the figures. At least one reference current signature can thus be provided, with a first current being assigned a current type 21, 22, 23 based on a comparison between a first current signature 14 and the at least one reference current signature and/or a further current being assigned a current type 21, 22, 23 is assigned based on a comparison between a further current signature 15, 16 and the at least one reference current signature. Furthermore, a geoposition of the first power generation unit 11 and/or a geoposition of a further power generation unit 12, 13 can be determined and/or provided, whereby when the first power is assigned to the first power generation unit 11 and/or when the further power is assigned to the further power generation unit 12, 13 the geoposition of the first power generation unit 11 and/or the geoposition of the further power generation unit 12, 13 are used. It is also possible that weather conditions at a point in time when power is generated for the first power in the area of the first power generation unit 11 and/or weather conditions at a point in time when power is generated for a further power in the area of a further power generation unit 12, 13 are determined and/or provided and when assigning the first stream to the first power generation unit 11 and/or when assigning a further stream to a further power generation unit 12, 13, the weather conditions in the area of the first power generation unit 11 and/or the weather conditions in the area of the further power generation unit 12, 13 are taken into account. In addition, a geoposition of the first power generation unit 11 and/or a further power generation unit 12, 13 can be determined and/or provided, with the first power and/or the further power depending on the geoposition of the first power generation unit 11 and/or depending on the geoposition the other power generation unit 12, 13 offered to the electricity consumer and / or used by the electricity consumer. Additionally or alternatively, a current time can be determined or provided in a method, with the first stream and/or a further stream being offered to the electricity consumer and/or used by the electricity consumer depending on the current time. In addition, it is possible for weather conditions at a point in time when power is generated from the first power source in the area of the first power generation unit 11 and/or weather conditions at a point in time when power is generated for a further power source in the area of a further power generation unit 12, 13 to be determined and/or provided and the first current and/or the further current are offered to the electricity consumer and/or used by the electricity consumer depending on the weather conditions in the area of the first electricity generation unit 11 and/or depending on the weather conditions in the area of the further electricity generation unit 12, 13.

Reference List

11

first power generation unit

11'

first pictogram

12

second power generation unit

12'

second pictogram

13

third power generation unit

13'

third pictogram

14

first current signature

15

second current signature

16

third current signature

20

contraption

21

first type of current

22

second type of current

23

third type of current

24

first power line

25

second power line

26

third power line

31

investigation unit

32

evaluation unit

33

computer program product

34

storage means

36

display unit

Claims (15)

Method for allocating electrical power to a power generation unit (11, 12, 13), comprising the steps of: - determining a first power signature (14) of a first electrical current which is generated by a first power generation unit (11), - determining a further current signature (15, 16) of a further electrical current which is generated by a further current generation unit (12, 13), and - evaluating the determined first current signature (14) and the determined further current signature (15, 16) for assigning the first current to the first current generation unit (11) and/or for assigning the further current to the further current generation unit (12, 13). procedure after claim 1 , characterized in that the first current signature (14) is evaluated to assign a current type (21, 22, 23) to the first current and/or the further current signature (15, 16) to assign a current type (21, 22, 23) to the further current is evaluated. procedure after claim 2 , characterized in that at least one reference current signature is provided and a current type (21, 22, 23) is assigned to the first current based on a comparison between the first current signature (14) and the at least one reference current signature and/or the further current a current type (21, 22, 23) is assigned based on a comparison between the further current signature (15, 16) and the at least one reference current signature. Method according to one of the preceding claims, characterized in that a geoposition of the first power generation unit (11) and/or a geoposition of the further power generation unit (12, 13) is determined and/or provided and when the first power is assigned to the first power generation unit (11) and/or the geoposition of the first power generation unit (11) and/or the geoposition of the further power generation unit (12, 13) are used when assigning the further power to the further power generation unit (12, 13). Method according to one of the preceding claims, characterized in that weather conditions at a time of power generation of the first power in the area of the first power generation unit (11) and/or weather conditions at a time of power generation of the further power in the area of the further power generation unit (12, 13) are determined and/or provided and when assigning the first electricity to the first electricity generation unit (11) and/or when assigning the additional electricity to the additional electricity generation unit (12, 13), the weather conditions in the area of the first electricity generation unit (11) and/or the weather conditions in the area of the further power generation unit (12, 13) are taken into account. Method according to one of the preceding claims, characterized in that the first electricity and/or the further electricity is offered to an electricity consumer depending on the assignment to the respective electricity generation unit (11, 12, 13). Method according to one of the preceding claims, characterized in that the first current and/or the further current is used by a current consumer depending on the assignment to the respective current generation unit (11, 12, 13). Procedure according to one of Claims 6 until 7 , characterized in that a geo-position of the first power generation unit (11) and/or the further power generation unit (12, 13) is determined and/or provided and the first power and/or the further power are determined as a function of the geo-position of the first power generation unit (11) and/or offered to the electricity consumer and/or used by the electricity consumer depending on the geoposition of the additional electricity generation unit (12, 13). Procedure according to one of Claims 6 until 8th , characterized in that a current time is determined or provided and the first stream and / or the other stream depending on the current time offered to the electricity consumer and / or used by the electricity consumer. Procedure according to one of Claims 6 until 9 , characterized in that weather conditions at a time of power generation of the first power in the area of the first power generation unit (11) and/or weather conditions at a time of power generation of the further power in the area of the further power generation unit (12, 13) are determined and/or are provided and the first electricity and/or the additional electricity is offered to the electricity consumer depending on the weather conditions in the area of the first electricity generation unit (11) and/or depending on the weather conditions in the area of the additional electricity generation unit (12, 13) and/or by electricity consumers are used. Device (20) for allocating electric power to a power generation unit (11, 12, 13), comprising: - a determination unit (31) for determining a first current signature (14) of an electrical first current generated by a first power generation unit (11). and for determining a further current signature (15, 16) of a further electrical current which is generated by a further current generation unit (12, 13), and - an evaluation unit (32) for evaluating the first current signature (14) determined and the further determined Current signature (15, 16) to assign NEN of the first power to the first power generation unit (11) and / or to allocate the other power to the other power generation unit (12, 13). Device (20) after claim 11 Which are used to carry out a method according to one of Claims 1 until 10 configured and designed. Device according to one of Claims 11 until 12 , characterized by a display unit (36) for displaying the first current generated with respect to the first current generating unit (11) and/or for displaying the further current generated with respect to the further current generating unit (12, 13). A computer program product (33) comprising instructions that cause a device according to any one of Claims 11 until 13 a method according to one of Claims 1 until 10 executes Computer-readable storage means (34) with a computer program product (33) stored thereon Claim 14 .

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