A system and computer implementation method for reducing the load on regional power grids and higher-level power grids, a computing unit, a regional power grid, a data processing device, a computer program product, a computer-readable data carrier, and a data carrier signal.

Abstract

The present invention relates to a system (1) for load reduction of a local power grid (2) and an upper power grid (4) electrically connected to each other at a grid supply point (6), the system including at least one charging unit (8) electrically connectable to the local power grid (2) for electrically charging electric vehicles (10, 14), the charging unit (8) including a power storage device (18) and a computing unit (20) connected by signals to the at least one charging unit (8), the computing unit (20) having a processor (22), a data memory (24), and a receiving unit (26) for receiving grid data, the grid data representing at least a power demand from the local power grid (2) and a grid frequency of the upper power grid (4), the computing unit (20) calculating power to be supplied to the upper power grid (4) and / or the local power grid (2) based on the grid data, the computing unit (20) controlling charging and / or discharging of the power storage device (18) so that the calculated power is supplied to the upper power grid (4) and / or the local power grid (2).

Description

[Technical Field]

[0001] The present invention relates to a system and method for alleviating loads on a local power grid and an upper-level power grid, a computing unit, a local power grid, a data processing device, a computer program product, a computer-readable data carrier, and a data carrier signal. [Background technology]

[0002] Systems that reduce the load on local power grids and higher-level power grids are commonly known. A power grid is generally a network for transmitting and distributing electrical energy, and is also called an electric grid. A power grid consists of electric wires such as overhead lines (transmission lines) and underground cables, as well as related facilities such as switching stations and substations.

[0003] Electric power grids can be classified by their voltage, for example, extra-high voltage, high voltage, medium voltage, and low voltage. High-voltage grids are generally characterized by their ability to distribute electricity. Local grids typically supply electricity to consumers, such as homes, office buildings, and commercial facilities. In addition to these consumers, local grids may also include generators, such as solar photovoltaic systems.

[0004] The rise of renewable energy sources has led to greater fluctuations in power generation than anticipated when the existing power grid was constructed, making maintaining a predetermined power grid frequency more complex. Furthermore, the demand for electricity in homes and commercial establishments is steadily increasing as the use of electrically powered devices increases. This includes, among other things, the use of electric vehicles for personal and commercial use.

[0005] Electric vehicles (EVs) are typically charged using charging units. Charging units often have a maximum charging capacity of several hundred kilowatts. Local power grids are often not configured for such charging units. Therefore, charging units for EVs may be equipped with a power storage device to provide high charging capacity for short periods of time. However, as the charge level of the EV battery increases, the maximum charging output decreases, so a short-term supply of charging power is usually sufficient. As a result, the expensive storage device of the charging unit is rarely used.

[0006] US 11007891 discloses a system for supplying fast charging power to electric vehicles, which can feed power into a local power grid through local energy management. A drawback of this system is that it does not address the upper power grid and therefore does not address the above-mentioned issues related to the upper power grid. DE 102016008666, DE 102017108579, US 2018 / 0358839, and EP 3442823 disclose further approaches for supplying charging power to electric vehicles.

[0007] It is an object of the present invention to provide a system and method for reducing the load on a local power grid and an upper power grid, a computing unit, a local power grid, a data processing device, a computer program product, a computer-readable data carrier, and a data carrier signal, which alleviate or eliminate one or more of the above-mentioned disadvantages. In particular, it is an object of the present invention to provide a solution that can reduce the load on a local power grid and an upper power grid.

[0008] This problem is solved by a system, a computing unit, a computer-implemented method, a data processing device, a computer program product, a computer-readable data carrier, and a data carrier signal according to the features set forth in the independent claims. Further advantageous embodiments of each of these aspects are specified in the respective dependent claims. The features disclosed in the claims, the description, and the drawings are individual and can be combined with each other in any technically meaningful way, thereby representing further embodiments of the invention.

[0009] According to a first aspect, the object of the present invention is achieved by a system for reducing (reducing load) on an electrically interconnected local power grid and an upper power grid. These power grids are electrically interconnected at a grid feed-in point, and the system includes at least one charging unit electrically connectable to the local power grid for electrically charging an electric vehicle. The charging unit includes a power storage device and a computing unit signal-connected to the at least one charging unit. The computing unit has a processor, a data memory, and a receiving unit for receiving grid data representing at least a power demand from the local power grid and a grid frequency of the upper power grid. The computing unit is further configured to determine power to be supplied to the upper power grid and / or the local power grid based on the grid data, and to control charging and / or discharging of the power storage device so that the determined power is supplied to the upper power grid and / or the local power grid.

[0010] The present invention is based on the finding that a system for reducing the load on a local power grid and a higher-level power grid must be designed to meet the diverse technical requirements imposed on the power grid. The present invention is also based on the finding that, ideally, the power stored in a charging unit for an electric vehicle should not be used statically for a single purpose, but should be supplied to either the local power grid or the higher-level power grid according to demand. Therefore, depending on the urgency, the charging unit can supply electricity to the local power grid, for example, to reduce peak loads, or to the higher-level power grid, for example, to stabilize frequency. It is clear to those skilled in the art that a charging unit installed on a local power grid always supplies power directly to the local power grid, and never directly to the higher-level power grid, even when supplying power to the higher-level power grid.

[0011] The system is configured to offload a local power grid and an upper power grid, and the local power grid and the upper power grid are not part of the system. In intended operation, the system is integrated into the local power grid and / or the upper power grid.

[0012] A local power grid is understood to mean, in particular, a power grid that supplies electricity to domestic and / or commercial customers (consumers). A local power grid may, for example, be a regional power grid and / or a distribution grid. A local power grid may be configured as a medium voltage grid or a low voltage grid. A higher-level power grid is understood to mean, in particular, a power grid that supplies electricity to a local power grid. A higher-level power grid may, for example, be a transmission grid. Large-scale power generation systems (e.g. power plants or wind farms) are usually located in the higher-level power grid. However, this does not of course exclude the possibility that power generation systems, such as photovoltaic power generation systems, may also be located in the local power grid.

[0013] The system comprises at least one charging unit electrically connectable to a local power grid for the purpose of electrically charging an electric vehicle (EV), the charging unit having an energy storage device (power storage device). Such a charging unit is also called a charging point or charging station. The electric vehicle is electrically connected to the charging unit, for example, by a charging cable, and power can be transferred from the charging unit to a battery of the electric vehicle. The power storage device can in particular be a battery. In particular, the battery may have a reduced service life, for example, because it has previously been used in an electric vehicle.

[0014] The system also includes a computing unit connected to at least one charging unit by signals. The computing unit has a processor, a data memory, and a receiving unit for receiving grid data. The processor, the data memory, and / or the receiving unit may be located and / or configured separately and / or at different locations. The individual components of the computing unit may be located in or mapped onto a cloud. Furthermore, they may be configured and / or located in combination. For this purpose, the computing unit or its components may be connected to the cloud by signals. The signal connection may be realized, for example, by wired or wireless communication, in particular by mobile communication. The computing unit may, for example, be a computer or may include a computer. The computing unit may be located independently of the charging unit and / or the local power grid, which in particular requires a signal connection for data exchange.

[0015] The grid data represents at least the power demand from the local power grid and the grid frequency of the upper power grid. The grid data can directly or indirectly represent the power demand from the local power grid and the grid frequency of the upper power grid.

[0016] The demand for electricity from the local grid can be a current demand or a forecasted demand. The current demand and / or forecasted demand can be, for example, the sum of the demands of the customers located on the local grid. Furthermore, this can be expressed in the form of grid frequency, voltage, electricity price, and / or current. Furthermore, the demand for electricity can be based on fuel prices and / or weather.

[0017] The grid frequency of the upper power grid is usually measured in real time, and data representing the grid frequency can be provided. When power consumption exceeds power generation, the grid frequency decreases. When power consumption falls below power generation, the grid frequency increases. Since the grid frequency must be kept essentially constant, frequency stabilization can be achieved by supplying power to the grid or drawing power from the grid.

[0018] The computing unit is configured to determine (calculate) the power to be supplied to the upper grid and / or the local grid based on the grid data. The determined (calculated) power may be determined as a function of the available power, the capacity and / or the energy content of the storage device, among other factors. In practice, the power supplied to the upper grid is usually traded (sold). For this purpose, expected prices are predicted, taking into account load forecasts, in order to create an economically optimized schedule for battery trading based on this.

[0019] Furthermore, the arithmetic unit is configured to control charging and / or discharging of the power storage device (electrical storage device) so that the calculated power is supplied to the upper power grid and / or the local power grid. In other words, the arithmetic unit is configured to calculate the power to be supplied, for example, to reduce peak loads or stabilize the grid frequency (details will be described later), and then control the power storage device so that the power is supplied. The power to be supplied is preferably calculated by the arithmetic unit based, in particular, on the available capacity of the charging unit.

[0020] Thus, charging units in a local grid not only supply power to the local grid, but also fulfill a higher-level function of influencing the upper grid. The supply of power to the local grid indirectly affects the upper grid, for example, because the upper grid can reduce the power that should be supplied to the local grid. In addition to frequency stabilization and peak load reduction, the system provides time shifting of local consumption and generation, enabling atypical grid utilization. Furthermore, it can also store power when surplus electricity occurs, for example, when renewable energy sources generate high power.

[0021] In a preferred embodiment of the system, the power supplied to the upper power grid is or includes control power for influencing the grid frequency of the upper power grid. If the amount of power generation is less than the power demand, the grid frequency of the upper power grid decreases. This effect is counteracted by supplying additional power to the upper power grid. Such power is called control power and is supplied from the energy storage device of the charging unit. This stabilizes the upper power grid and also provides economic benefits for the operator of the charging unit.

[0022] In addition, to reduce the power supplied from the upper power grid to the local power grid, the power supplied to the local power grid is preferably peak load power or consists of peak load power. Peak load power is applied to setting a peak load cap. Particularly during periods of high energy consumption in the local power grid, supplying peak load power is advantageous in terms of reducing the load on the upper power grid and also allows charging unit operators to take advantage of the high electricity prices that typically occur during these periods.

[0023] In another preferred embodiment of the system, the system includes two or more charging units equipped with power storage devices, and the computing unit is configured to map the two or more power storage devices as virtual power plants in the data model, calculate surplus power of the power storage devices, and control discharge of the power storage devices so that the surplus power is supplied to an upper power grid. The computing unit or its components are preferably mapped on a cloud.

[0024] The surplus power of two or more energy storage devices is, in particular, the available power minus the reserve power, which is typically set aside to meet existing supply obligations.

[0025] A further preferred development of the system is characterized in that the computing unit is configured to predict a power demand of the local power grid and / or the upper power grid based on the grid data and to determine whether to supply peak load power or control power depending on this power demand.

[0026] The power demand of the local power grid and / or the upper power grid can be predicted directly or indirectly. The power demand can also be determined abstractly. For example, depending on whether the power demand of the local power grid or the upper power grid is higher, supply can be provided to the side with higher demand. Furthermore, the higher power demand can be determined, for example, using the power price.

[0027] In a further preferred embodiment, the computing unit is configured to generate a first time-dependent forecast demand for control power and a second time-dependent forecast demand for peak load power over a predetermined period based on grid data, and the computing unit is further configured to determine whether to supply peak load power or control power depending on the first forecast and the second forecast. Using the computing unit configured in this way, plans (also called "power schedules" or "power plans") for adjusting different power demands or supplying different functions can be generated, which can be operated by charging units, power storage devices, etc.

[0028] In a further preferred embodiment of the system, the charging unit is arranged and configured (adapted) to supply charging power to the electric vehicle so that peak load power or control power can be supplied without particular limitation, for example, the charging power can be reduced to supply the peak load power or control power.

[0029] Preferably, the charging unit is also arranged and configured (adapted) to provide negative charging power to ensure the supply of peak load power or control power, for example, the peak load power and / or control power can be supplied using power stored in the battery of the electric vehicle.

[0030] In a further preferred embodiment of the present system, the grid data represents the power demand or a forecast value thereof of a customer (consumer) located on the local power grid and / or a forecast power consumption amount in the upper power grid. The power demand, the forecast value thereof, or the forecast power consumption amount may be represented directly or indirectly.

[0031] A preferred further development of the system is characterized in that the charging unit is arranged and configured to supply emergency power to a subgrid of a local power grid or to the local power grid, and the computing unit is configured to detect a fault in the upper power grid and, when the fault is detected, control the charging unit so that emergency power is supplied to the subgrid and / or the local power grid. By using the charging unit configured in this way, emergency power can be advantageously supplied to consumers even when the normal power supply is unavailable.

[0032] Additionally, it may be desirable to use emergency power for black starting to restart a local grid after a failure of the upper grid, thereby maintaining grid frequency.

[0033] According to yet another aspect, the problem set forth at the beginning is solved by a computing unit including a processor, a data memory, and a receiving unit for receiving grid data representing at least a power demand from a local power grid and a grid frequency of a higher-level power grid, the computing unit being signal-technically connectable to a charging unit including a power storage device for electrically charging an electric vehicle, the computing unit being configured to calculate power to be supplied to the higher-level power grid and / or the local power grid based on the grid data, and to control charging and discharging of the power storage device so that the calculated power is supplied to the higher-level power grid and / or the local power grid.

[0034] In yet another aspect, the problem stated at the beginning is solved by a local power grid that can be electrically connected to a higher-level power grid at a grid feed point during normal operation and that is equipped with a system or computing unit according to any of the above-mentioned embodiments.

[0035] According to yet another aspect, the problem set forth at the outset is solved by a computer-implemented method for relaxing (shedding load) a local power grid and an upper power grid electrically connected to each other at a grid supply point, the method comprising: receiving grid data representing at least a power demand from the local power grid and a grid frequency of the upper power grid; calculating power to be supplied to the upper power grid and / or the local power grid based on the grid data; and controlling a charging unit having a power storage device for electrically charging an electric vehicle based on the calculated power, such that the calculated power is supplied to the upper power grid and / or the local power grid by charging and / or discharging the power storage device.

[0036] In a preferred further development of the computer-implemented method, it is provided that the power supplied to the higher-level power grid is or includes control power for influencing the grid frequency of the higher-level power grid, and it is further preferred that the power supplied to the local power grid is or includes peak load power for reducing the power supplied from the higher-level power grid to the local power grid.

[0037] A further preferred embodiment of the computer-implemented method includes predicting power demands of the local power grid and / or the upper power grid based on grid data, and providing peak load power or control power in accordance with the predicted power demands so that the greater power demand is satisfied. In this embodiment, the power demands of the local power grid and the upper power grid are first predicted, and then a decision is made based on this to provide either peak load power or control power. This decision is made based on knowledge of which of the local power grid and the upper power grid has a greater power demand. In particular, the power demand of the upper power grid is, of course, power that can be supplied by the power storage device. Furthermore, the decision to provide either peak load power or control power is preferably made based on the power demand.

[0038] A further preferred embodiment of the computer-implemented method provides that it includes (steps) detecting a fault in an upper-level power grid and (steps) supplying emergency power to a subgrid of a local power grid or to a local power grid when the fault is detected.

[0039] In yet another aspect, the problem stated at the beginning is solved by a data processing device, in particular a computing unit as described in the above embodiments, characterized in that the data processing device comprises means for performing the steps of the method of any of the above embodiments.

[0040] According to yet another aspect, the problem stated in the introduction is solved by a computer program product comprising instructions that, when executed by a processor, cause the processor to perform the steps of the method according to any of the preceding embodiments.

[0041] According to a further aspect, the problem stated in the introduction is solved by a computer-readable data carrier having stored thereon a computer program product according to the aforementioned aspect.

[0042] According to yet another aspect, the problem stated in the introduction is solved by a data carrier signal transmitting a computer program product according to the previous aspect.

[0043] For further advantages, embodiments and specific implementation details of each aspect and possible developments thereof, reference is also made to the description of the other aspects and the corresponding features and further developments. [Brief explanation of the drawings]

[0044] Preferred embodiments will now be described, by way of example only, with reference to the accompanying drawings, in which: [Figure 1] 1 is a schematic diagram of an exemplary embodiment of a system for shedding load on a local power grid and an upper power grid; [Figure 2] 1 is a schematic diagram of an exemplary embodiment of a system for shedding load on a local power grid and an upper power grid; [Figure 3] 1 is a schematic diagram illustrating an exemplary method for shedding load on a local power grid and an upper power grid.

[0045] In the drawings, identical or essentially functionally identical or similar elements are designated by the same reference numerals. DETAILED DESCRIPTION OF THE INVENTION

[0046] 1 and 2 show a system 1 for load shedding of a local power grid 2 and an upper power grid 4 electrically connected to each other at a grid feed point 6. For example, a substation may function at the grid feed point 6 to reduce the voltage of the upper power grid 4 for the local power grid 2. A power plant 44 is connected to the upper power grid 4 and supplies electrical energy.

[0047] The local power grid 2 is populated with various consumers, including a commercial unit 30 and residential consumers 34-42 located within a sub-grid 32. The commercial unit 30 and / or the residential consumers 34-42 may also function as generators, either temporarily or permanently. The local power grid 2 is provided with a charging unit 8 for electrically charging the electric vehicles 10, 12. The charging unit 8 includes an energy storage device 18, which may be configured as, for example, a battery. The charging unit 8 may be used to charge the batteries 12, 16 of the vehicles 10, 14.

[0048] The computing unit 20 is also signal-connected to the charging unit 8. The computing unit 20 comprises a processor 22, a data memory 24, a receiving unit 26 and a transmitting unit 28. The receiving unit 26 is configured to receive grid data representing at least the power demand from the local power grid 2 and the grid frequency of the upper power grid 4.

[0049] The computing unit 20 is configured to calculate, based on this grid data, the power to be supplied to the upper power grid 4 and / or the local power grid 2. The power supplied to the upper power grid 4 may be, for example, control power for influencing the system frequency (grid frequency) of the upper power grid 4. This can be used in particular for frequency stabilization.

[0050] Additionally, the power may be peak load power for the local power grid 2, thereby reducing the power supplied to the local power grid 2 from the upper power grid 4. Such peak load power may be desirable to reduce peak loads and reduce the cost of supplied power, particularly during periods of high demand for power within the local power grid 2.

[0051] The computing unit 20 is also configured (adapted) to map a plurality of power storage devices of a plurality of charging units (not shown here) as a virtual power plant in the data model. Via the virtual power plant, the computing unit 20 can calculate surplus power of the power storage devices. Furthermore, the computing unit 20 can control the discharge of the power storage device, a part of the power storage device or a group of power storage devices so that the surplus power of the power storage devices is supplied to the upper power grid 4. Supplying such surplus power may be desirable especially during times when frequency stabilization is required in the upper power grid 4.

[0052] The charging unit 8 is further arranged and configured to supply emergency power to the sub-grid 32. To this end, the computing unit 20 is configured (adapted) to detect a fault in the upper power grid 4 and to control the charging unit 8 such that emergency power is supplied when a fault is detected.

[0053] 3 shows a schematic diagram of an example computer-implemented method for shedding loads on the local power grid 2 and the upper power grid 4. In step 500, grid data representing at least the power demand of the local power grid 2 and the grid frequency of the upper power grid 4 is received. In step 502, the power demand of the local power grid 2 and the upper power grid 4 is predicted based on the grid data. This prediction can be based on different grid data, on the one hand technical and on the other hand indirectly by economic data.

[0054] In step 504, the power to be supplied to the upper power grid 4 and / or the local power grid 2 is calculated based on the grid data and / or the predicted power demand.

[0055] In step 506, the charging unit 8 is controlled so that the storage device 18 of the charging unit 8 is charged or discharged based on the determined power, and the determined power is supplied to the upper power network 4 and / or the local power network 2.

[0056] The above-described system and corresponding computer-implemented method have the advantage that it is possible to significantly influence the local power grid and simultaneously the upper power grid (e.g., the distribution network) via a charging unit, particularly via multiple charging units. This multiplexing capability is necessary to accommodate different requirements in the local power grid and the upper power grid, and in particular to ensure that the power storage device of the charging unit 8 is utilized as continuously as possible. Due to the high cost of the power storage device 18, it is particularly economical to use it for other purposes outside of the actual charging and local power grid 2. In this way, the system 1 contributes to the technical improvement of the applied power grids 2, 4 and also leads to an economical use of the charging unit 8 equipped with the power storage device 18. [Explanation of symbols]

[0057] 1. System 2. Regional power grid 4...Upper power grid 6. Grid supply point 8. Charging unit 10. Vehicle 12. Battery 14. Vehicle 16. Battery 18. Power storage device 20. Computing unit 22 Processor 24. Data storage device 26 Receiving unit 28. Transmitting unit 30 Commercial Units 32 Subgrid 34...demander (consumer) 36...demander (consumer) 38...demander (consumer) 40...Demand (consumer) 42...demander (consumer) 44 Power Plant

Claims

1. A system (1) for reducing the load on a regional power grid (2) and a higher-level power grid (4), wherein these power grids are electrically interconnected at a grid supply point (6), At least one charging unit (8) electrically connectable to the local power grid (2) for electrically charging electric vehicles (10, 14), wherein the charging unit (8) includes a power storage device (18), An arithmetic unit (20) that is signal-connected to at least one charging unit (8), comprising an arithmetic unit having a processor (22), a data memory (24), and a receiving unit (26), The receiving unit receives grid data representing at least the power demand from the regional power grid (2) and the power grid frequency of the higher-level power grid (4), The calculation unit (20) is configured to determine, based on the grid data, the power to be supplied to the higher-level power grid (4) and / or the regional power grid (2). The calculation unit (20) is configured to control the charging and / or discharging of the power storage device (18) so that the determined power is supplied to the upstream power grid (4) and / or the local power grid (2), in a system (1).

2. The power supplied to the upstream power grid (4) is control power for influencing the frequency of the upstream power grid (4), or includes control power, and / or The electricity supplied to the aforementioned regional power grid (2) is peak load power, or includes peak load power, which is used to reduce the electricity supplied to the aforementioned regional power grid (2) from the aforementioned higher-level power grid (4). The system (1) according to claim 1.

3. The system (1) includes two or more charging units (8) equipped with a power storage device (18), The calculation unit (20) maps two or more power storage devices (18) as virtual power plants to a data model, calculates the surplus power of the power storage devices (18), and controls the discharge of the power storage devices (18) so that the surplus power of the power storage devices (18) is supplied to the higher-level power grid. The system (1) according to claim 1.

4. The calculation unit (20) is configured to predict the power demand of the regional power grid (2) and / or the higher-level power grid (4) based on the grid data, and to decide whether to supply peak load power or control power according to the power demand. The system (1) according to claim 1.

5. The calculation unit (20) is configured to generate a time-dependent first predicted demand for control power and a time-dependent second predicted demand for peak load power over a predetermined period, based on the grid data. The calculation unit (20) is configured to determine whether to supply peak load power or control power according to the first predicted value and the second predicted value. The system (1) according to claim 1.

6. The charging unit (8) is arranged and configured to supply charging power to the electric vehicle such that the peak load power or the control power can be supplied without any particular limitations. The system (1) according to claim 1.

7. The charging unit (8) is arranged and configured to provide negative charging power in order to ensure the supply of the peak load power or the control power. The system (1) according to claim 1.

8. The grid data represents the current demand or predicted current demand of current demand of current consumers (30, 34-42) located in the regional power grid (2), and / or the predicted power consumption in the higher-level power grid (4). The system (1) according to claim 1.

9. The charging unit (8) is arranged and configured to supply emergency power to the subgrid (32) of the regional power grid (2) or to the regional power grid (2), The computing unit (20) is configured to detect a fault in the higher-level power grid (4) and, when the fault is detected, to control the charging unit (8) so that emergency power is supplied to the subgrid (32) and / or the regional power grid (2). The system (1) according to claim 1.

10. A processing unit (20), The system comprises a processor (22), a data memory (24), and a receiving unit (26) for receiving grid data representing power demand from at least a regional power grid (2) and the grid frequency of a higher-level power grid (4). The calculation unit (20) can be connected in a signal-technically appropriate manner to a charging unit (8) equipped with a power storage device (18) for electrically charging an electric vehicle. The calculation unit (20) is configured to calculate the amount of power to be supplied to the higher-level power grid (4) and / or the regional power grid (2) based on the grid data. The calculation unit (20) is configured to control the charging and discharging of the power storage device (18) so that the calculated power is supplied to the higher-level power grid (4) and / or the regional power grid (2). Processing unit.

11. In intended operation, the grid supply point (6) is electrically connected to the higher-level power grid (4), A system (1) according to any one of claims 1 to 9 or a calculation unit (20) according to claim 10, Regional power grid (2).

12. A computer implementation method for reducing the load on a regional power grid (2) and a higher-level power grid (4) that are electrically connected to each other at a grid supply point (6), The system receives at least the power demand from the regional power grid (2) and grid data representing the grid frequency of the higher-level power grid (4) (500), Based on the grid data, the power to be supplied to the higher-level power grid (4) and / or the regional power grid (2) is determined (504), Based on the determined power, the charging unit (8) equipped with a power storage device (18) for electrically charging an electric vehicle is controlled (506), and the power storage device (18) is charged and / or discharged so that the determined power is supplied to the upstream power grid (4) and / or the local power grid (2), Computerized implementation method.

13. The power supplied to the upstream power grid (4) is control power for influencing the power grid frequency of the upstream power grid (4), or includes control power, and / or The electricity supplied to the aforementioned regional power grid (2) is either peak load power to reduce the electricity supplied to the regional power grid (2) from the upstream power grid (4), or includes peak load power. The computer implementation method according to claim 12.

14. Based on the grid data, predict the electricity demand of the regional power grid (2) and / or the higher-level power grid (4) (502), This includes supplying the peak load power or the control power in accordance with the predicted power demand in order to meet higher power demands. The computer implementation method according to claim 12.

15. To detect a fault in the aforementioned higher-level power grid (4), This includes supplying emergency power to the subgrid of the regional power grid (2) or the regional power grid (2) when the aforementioned fault is detected. The computer implementation method according to claim 12.

16. A computing device (20) according to claim 10, comprising means for carrying out the method according to claim 12, Data processing device.

17. The instructions include, when executed by the processor, instructions that cause the processor to perform the method according to claim 12, Computer program products.

18. The computer program product described in claim 17 is stored in A computer-readable data carrier.

19. A data carrier signal for transmitting the computer program product described in claim 17.

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