A method, device, medium, equipment and product for determining primary frequency modulation power of each power generation unit in a wind-solar power storage station

Abstract

The application discloses a kind of wind and light storage power station in new energy field station frequency control technical field method, device, medium, equipment and product for determining the primary frequency modulation power of each power generation unit in wind and light storage power station.The method comprises: obtaining the primary frequency modulation dead zone of each power generation unit in wind and light storage power station;Determine the frequency modulation external characteristic of wind and light storage power station based on the primary frequency modulation dead zone of each power generation unit;According to the frequency modulation external characteristic of wind and light storage power station and the power constraint of each power generation unit, optimization objective function is based on optimization solution, to determine the primary frequency modulation power of each power generation unit.The application fills the research gap of wind and light storage power station primary frequency modulation power optimization distribution, can meet the actual engineering demand of primary frequency modulation power optimization distribution at station level, improve the primary frequency modulation collaborative control effect of wind and light storage integrated power station, promote the improvement and efficient landing of wind and light storage integrated operation mode.

Description

Technical Field

[0001] This invention relates to the field of molten salt energy storage technology for frequency regulation control in new energy power plants, and particularly to a method, device, medium, equipment and product for determining the primary frequency regulation power of each power generation unit in a wind-solar-storage power plant. Background Technology

[0002] Currently, some large-scale new energy bases and integrated wind-solar-storage power plants are exploring integrated wind-solar-storage control models, including the coordinated optimization allocation of primary frequency regulation power. This involves using wind-storage or solar-storage as the coordinated control object, and optimizing for optimal frequency regulation performance, to coordinately allocate primary frequency regulation power commands.

[0003] Current research on wind-solar-storage synergy in primary frequency regulation mostly focuses on the system level. At the site level, research on synergistic frequency regulation primarily focuses on wind-storage synergy and solar-storage synergy, without considering the primary frequency regulation dead zone. Therefore, methods for optimizing the allocation of primary frequency regulation power in wind-solar-storage power stations that take into account the primary frequency regulation dead zone still require further research. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of existing technologies that are currently mainly limited to two independent directions: wind-storage synergy and solar-storage synergy, and have not yet formed a technical solution that takes into account the synergy of wind, solar, and storage. This invention provides a method, device, medium, equipment, and product for determining the primary frequency regulation power of each power generation unit in a wind-solar-storage power station, and achieves optimized allocation of the primary frequency regulation power of the wind-solar-storage power station based on the primary frequency regulation dead zone.

[0005] To solve the above-mentioned technical problems, the present invention is implemented using the following technical solution:

[0006] In a first aspect, the present invention provides a method for determining the primary frequency regulation power of each power generation unit in a wind-solar-storage power station, comprising:

[0007] Obtain the primary frequency regulation dead zone of each power generation unit in the wind-solar-storage power station;

[0008] Based on the primary frequency regulation dead zone of each power generation unit, the external frequency regulation characteristics of the wind-solar-storage power station are determined.

[0009] Based on the frequency regulation characteristics of the wind-solar-storage power station and the power constraints of each power generation unit, the primary frequency regulation power of each power generation unit is determined by optimizing the objective function.

[0010] Optionally, each power generation unit in the wind-solar-storage power station includes an energy storage unit, a photovoltaic array, and a wind turbine;

[0011] The frequency regulation response characteristics of the energy storage unit are expressed as follows:

[0012] ,

[0013] in, This indicates the primary frequency regulation power of the energy storage unit. This indicates that the primary frequency regulation of the energy storage unit increases the reserve power. This represents the droop factor of the energy storage unit. Indicates the system frequency deviation. This represents the absolute value of the primary frequency regulation dead zone of the energy storage unit. This represents the function that takes the maximum value. This indicates that the standby power of the energy storage unit is reduced during primary frequency regulation;

[0014] The frequency modulation response characteristics of a photovoltaic array are expressed as follows:

[0015] ,

[0016] in, This indicates the primary frequency modulation power of the photovoltaic array. This indicates that the primary frequency modulation of the photovoltaic array increases the reserve power. This represents the sag factor of the photovoltaic array. This represents the absolute value of the primary frequency modulation dead zone of the photovoltaic array. This indicates that the standby power of the photovoltaic array is reduced during primary frequency modulation.

[0017] The frequency regulation response characteristics of the fan are expressed as follows:

[0018] ,

[0019] in, This indicates the primary frequency regulation power of the fan. This indicates that the standby power of the primary frequency regulation of the fan has been increased. This indicates the sag coefficient of the fan. This represents the absolute value of the primary frequency regulation dead zone of the fan. This indicates that the standby power of the fan is reduced during primary frequency regulation.

[0020] Optionally, the expression for the frequency regulation external characteristics of the wind-solar-storage power station is as follows:

[0021] ,

[0022] in, This indicates the primary frequency regulation power of the wind, solar, and energy storage power station. Indicates the number of wind turbines. Indicates the first The primary frequency regulation power of each fan Indicates the number of photovoltaic arrays. Indicates the first The primary frequency modulation power of a photovoltaic array Indicates the number of energy storage units. Indicates the first The primary frequency regulation power of each energy storage unit.

[0023] Optionally, the power constraint expression for each power generation unit is as follows:

[0024] ,

[0025] ,

[0026] ,

[0027] in, Indicates the first The standby power of each fan is reduced by the primary frequency regulation. Indicates the first The standby power of the primary frequency regulation of each fan is increased. Indicates the first The primary frequency regulation power of each fan Indicates the first The standby power of a photovoltaic array is reduced by frequency modulation. Indicates the first The primary frequency modulation of each photovoltaic array increases the reserve power. Indicates the first The primary frequency modulation power of a photovoltaic array Indicates the first The standby power of each energy storage unit is reduced by frequency regulation. Indicates the first The primary frequency regulation of each energy storage unit increases the reserve power. Indicates the first The primary frequency regulation power of each energy storage unit.

[0028] Optionally, the expression for the optimization objective function is as follows:

[0029] ,

[0030] in, This represents the function that takes the minimum value. Indicates the number of wind turbines. Indicates the first The primary frequency regulation power of each fan Indicates the number of photovoltaic arrays. Indicates the first The primary frequency modulation power of a photovoltaic array Indicates the number of energy storage units. Indicates the first The primary frequency regulation power of each energy storage unit This represents the preset unit frequency regulation cost coefficient for the fan. This represents the unit frequency modulation cost coefficient of the preset photovoltaic array. This represents the unit frequency regulation cost coefficient of the preset energy storage unit.

[0031] Optionally, the primary frequency regulation power of each power generation unit can be determined by optimizing the objective function using a convex optimization algorithm.

[0032] In a second aspect, the present invention provides a device for determining the primary frequency regulation power of each power generation unit in a wind-solar-storage power station, used to implement the method for determining the primary frequency regulation power of each power generation unit in a wind-solar-storage power station as described in any one of the first aspects, comprising:

[0033] The acquisition module is used to acquire the primary frequency regulation dead zone of each power generation unit in the wind-solar-storage power station;

[0034] The first determining module is used to determine the frequency regulation external characteristics of the wind-solar-storage power station based on the primary frequency regulation dead zone of each power generation unit.

[0035] The second determining module is used to determine the primary frequency regulation power of each power generation unit by performing optimization solution based on the frequency regulation external characteristics of the wind-solar-storage power station and the power constraints of each power generation unit, according to the optimization objective function.

[0036] Thirdly, the present invention provides a computer-readable storage medium having computer instructions stored thereon, which, when executed by a processor, implement the steps of the method for determining the primary frequency regulation power of each power generation unit in a wind-solar-storage power station as described in the first aspect.

[0037] Fourthly, the present invention provides a computer device, comprising:

[0038] Memory, used to store computer instructions;

[0039] A processor is configured to execute the computer instructions to implement the steps of the method for determining the primary frequency regulation power of each power generation unit in a wind-solar-storage power station as described in the first aspect.

[0040] A communication interface is used to connect to external devices or networks to enable data exchange and communication.

[0041] A communication bus is used to establish a connection channel between the processor and the memory to realize the transmission of data and instructions.

[0042] Fifthly, the present invention provides a computer program product, including computer instructions, which, when executed by a processor, implement the steps of the method for determining the primary frequency regulation power of each power generation unit in a wind-solar-storage power station as described in the first aspect.

[0043] Compared with the prior art, the beneficial effects achieved by the present invention are as follows:

[0044] 1. By obtaining the primary frequency regulation dead zone of each power generation unit in the wind-solar-storage power station, including the energy storage unit, photovoltaic array, and wind turbine, the external frequency regulation characteristics of the power station can be determined. Based on these external frequency regulation characteristics and the power constraints of each power generation unit, the primary frequency regulation power of each power generation unit can be determined. This effectively solves the technical gap in the current research on wind-solar-storage coordinated frequency regulation at the power station level, which is limited to the independent directions of wind and energy storage and photovoltaic and energy storage, does not take into account the coordination of the three and does not consider the primary frequency regulation dead zone.

[0045] 2. It fills the research gap in the optimization allocation of primary frequency regulation power in wind-solar-storage power stations, can meet the actual engineering needs of primary frequency regulation power optimization allocation at the station level, improve the primary frequency regulation collaborative control effect of integrated wind-solar-storage power stations, and promote the improvement and efficient implementation of the integrated wind-solar-storage operation model. Attached Figure Description

[0046] Figure 1 This is a flowchart illustrating the method for determining the primary frequency regulation power of each power generation unit in a wind-solar-storage power station provided in an embodiment of the present invention.

[0047] Figure 2 This is a schematic diagram illustrating the frequency regulation response characteristics of each power generation unit provided in an embodiment of the present invention;

[0048] Figure 3 This is a schematic diagram of the primary frequency regulation power determination device for each power generation unit in a wind-solar-storage power station provided in an embodiment of the present invention.

[0049] Figure 4 This is a schematic diagram of the primary frequency regulation power determination system for each power generation unit in a wind-solar-storage power station provided in an embodiment of the present invention.

[0050] In the diagram, 301 is the acquisition module, 302 is the first determination module, 303 is the second determination module, 410 is the processor, 420 is the communication interface, 430 is the memory, and 440 is the communication bus. Detailed Implementation

[0051] The technical solution of the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the embodiments and specific features in the embodiments are detailed descriptions of the technical solution of the present application, rather than limitations thereof. In the absence of conflict, the embodiments and technical features in the embodiments can be combined with each other.

[0052] It should be noted that the term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0053] Example 1

[0054] This invention discloses a method for determining the primary frequency regulation power of each power generation unit in a wind-solar-storage power station, with reference to... Figure 1 As shown, it specifically includes:

[0055] S1, obtain the primary frequency regulation dead zone of each power generation unit in the wind-solar-storage power station;

[0056] S2, Based on the primary frequency regulation dead zone of each power generation unit, determine the external frequency regulation characteristics of the wind-solar-storage power station;

[0057] S3. Based on the frequency regulation characteristics of the wind-solar-storage power station and the power constraints of each power generation unit, the primary frequency regulation power of each power generation unit is determined by optimizing the objective function.

[0058] In step S1, each power generation unit in the wind-solar-storage power station of this embodiment includes an energy storage unit, a photovoltaic array, and a wind turbine. In other embodiments, the wind turbine may also be referred to as a wind turbine generator set or a wind turbine unit. The wind-solar-storage power station is an integrated wind-solar-storage power station or a large-scale new energy base that includes integrated wind-solar-storage control.

[0059] Fast-response droop control can replace virtual inertia control and achieves better frequency regulation performance than integrated inertia control in practical applications. Therefore, in this embodiment, the overall frequency regulation control technology route of the wind-solar-storage power station is set as droop control.

[0060] Specifically, the primary frequency regulation dead zone parameters for the energy storage unit, photovoltaic array, and wind turbine in the wind-solar-storage power station can be determined according to the two detailed rules or similar grid connection operation management specifications issued by the power grid in the area where the wind-solar-storage power station is located.

[0061] In this embodiment, the primary frequency regulation dead zone parameter of the energy storage unit can be denoted as: The primary frequency modulation dead time parameter of a photovoltaic array can be denoted as: The primary frequency regulation dead zone parameter of the fan can be denoted as: .

[0062] The primary frequency regulation dead zone of each power generation unit can be pre-stored in the controller or host computer of the wind, solar and energy storage power station, or it can be obtained in real time from the grid dispatch terminal or data server through the network interface.

[0063] In step S2, the frequency regulation response characteristics of each power generation unit are determined based on the primary frequency regulation dead zone of each power generation unit, and the external frequency regulation characteristics of the wind-solar-storage power station are determined based on the frequency regulation response characteristics of each power generation unit.

[0064] Specifically, primary frequency regulation reserve power can include primary frequency regulation upward reserve power and primary frequency regulation downward reserve power. After obtaining the primary frequency regulation dead zone of each generating unit, the frequency regulation response characteristics of each generating unit can be determined by the following formula, that is, the frequency regulation response characteristics of each generating unit can be expressed as:

[0065]

[0066] ,

[0067] in, This indicates the primary frequency regulation power of the power generation unit. This indicates that the primary frequency regulation of the power generation unit increases the reserve power. This represents the droop coefficient of the power generation unit. Indicates the system frequency deviation. This represents the absolute value of the primary frequency regulation dead zone of the power generation unit. This indicates that the standby power of the power generation unit is reduced during primary frequency regulation.

[0068] Figure 2 The diagram shows the frequency regulation response characteristics of each power generation unit. Taking a power generation unit that includes an energy storage unit, a photovoltaic array, and a wind turbine as an example, the frequency regulation response characteristics of the energy storage unit are expressed as follows:

[0069] ,

[0070] in, This indicates the primary frequency regulation power of the energy storage unit. This indicates that the primary frequency regulation of the energy storage unit increases the reserve power by no less than 20% of the rated power of the energy storage unit. This represents the droop factor of the energy storage unit, with a value ranging from 33 to 200. The specific value can be determined based on the frequency regulation requirements of the local power grid. express, This represents the absolute value of the primary frequency regulation dead zone of the energy storage unit. This represents the function that takes the maximum value. This indicates that the standby power of the energy storage unit is reduced by no less than 20% of the rated power of the energy storage unit during primary frequency regulation.

[0071] The frequency modulation response characteristics of a photovoltaic array are expressed as follows:

[0072] ,

[0073] in, This indicates the primary frequency modulation power of the photovoltaic array. This indicates that the standby power of the photovoltaic array during primary frequency regulation should not be less than 6% of the current operating power of the photovoltaic array. The sag factor of the photovoltaic array ranges from 10 to 50. This represents the absolute value of the primary frequency modulation dead zone of the photovoltaic array. This means that the reserve power of the photovoltaic array is reduced by no less than 10% of the current operating power of the photovoltaic array during primary frequency regulation.

[0074] The frequency regulation response characteristics of the fan are expressed as follows:

[0075] ,

[0076] in, This indicates the primary frequency regulation power of the fan. This indicates that the standby power of the primary frequency regulation of the wind turbine should be no less than 6% of the current operating power of the wind turbine. This represents the sag coefficient of the fan, with a value ranging from 10 to 50. This represents the absolute value of the primary frequency regulation dead zone of the fan. This means that the standby power of the wind turbine is reduced by a minimum of 10% of the current operating power of the wind turbine during primary frequency regulation.

[0077] After determining the frequency regulation response characteristics of each power generation unit, the sum of the frequency regulation response characteristics of each power generation unit can be used as the external frequency regulation characteristic of the wind-solar-storage power station:

[0078] ,

[0079] in, This indicates the primary frequency regulation power of the wind, solar, and energy storage power station. Indicates the number of wind turbines. Indicates the first The primary frequency regulation power of each fan Indicates the number of photovoltaic arrays. Indicates the first The primary frequency modulation power of a photovoltaic array Indicates the number of energy storage units. Indicates the first The primary frequency regulation power of each energy storage unit.

[0080] In step S3, the power constraint is used to limit the relationship between the primary frequency regulation power and the primary frequency regulation reserve power of each power generation unit. When the wind-solar-storage power station is controlled in an integrated manner, the frequency regulation power of each power source can be flexibly optimized and allocated while ensuring the external frequency regulation characteristics of the wind-solar-storage power station. Since the frequency regulation response speed of wind power, photovoltaic and energy storage are very fast within the primary frequency regulation scale, it can be considered that the allocation of frequency regulation power among the three does not affect the overall frequency regulation effect of the station.

[0081] The expressions for the power constraints of each power generation unit are as follows:

[0082] ,

[0083] ,

[0084] ,

[0085] in, Indicates the first The standby power of each fan is reduced by the primary frequency regulation. Indicates the first The standby power of the primary frequency regulation of each fan is increased. Indicates the first The primary frequency regulation power of each fan Indicates the first The standby power of a photovoltaic array is reduced by frequency modulation. Indicates the first The primary frequency modulation of each photovoltaic array increases the reserve power. Indicates the first The primary frequency modulation power of a photovoltaic array Indicates the first The standby power of each energy storage unit is reduced by frequency regulation. Indicates the first The primary frequency regulation of each energy storage unit increases the reserve power. Indicates the first The primary frequency regulation power of each energy storage unit.

[0086] In actual operation, the most important factor for wind-solar-storage power stations is economic efficiency, and the frequency regulation effect of the system is fixed by power constraints. Therefore, based on the external frequency regulation characteristics of wind-solar-storage power stations and the power constraints of each power generation unit, the primary frequency regulation power of each power generation unit can be determined as follows: Based on the external frequency regulation characteristics of wind-solar-storage power stations and the power constraints of each power generation unit, with the goal of minimizing the frequency regulation cost of wind-solar-storage power stations, the primary frequency regulation power of each power generation unit is determined.

[0087] The expression for the objective function is as follows:

[0088] ,

[0089] in, This represents the function that takes the minimum value. Indicates the number of wind turbines. Indicates the first The primary frequency regulation power of each fan Indicates the number of photovoltaic arrays. Indicates the first The primary frequency modulation power of a photovoltaic array Indicates the number of energy storage units. Indicates the first The primary frequency regulation power of each energy storage unit This represents the preset unit frequency regulation cost coefficient for the fan. This represents the unit frequency modulation cost coefficient of the preset photovoltaic array. This represents the preset unit frequency regulation cost coefficient for each energy storage unit; each unit frequency regulation cost coefficient can be provided by the wind, solar, and energy storage equipment manufacturers or fitted based on historical operating data.

[0090] The primary frequency regulation power of each power generation unit in the wind-solar-storage power station can be obtained by solving the above objective function using an arbitrary convex optimization algorithm.

[0091] In summary, the method for determining the primary frequency regulation power of each power generation unit in a wind-solar-storage power station provided in this embodiment obtains the primary frequency regulation dead zone of each power generation unit (energy storage unit, photovoltaic array, and wind turbine) in the wind-solar-storage power station, thereby determining the external frequency regulation characteristics of the power station. Based on these external frequency regulation characteristics and the power constraints of each power generation unit, the primary frequency regulation power of each power generation unit is determined. This effectively solves the technical gap in current research on wind-solar-storage coordinated frequency regulation at the power station level, which is limited to the independent directions of wind and energy storage and photovoltaic and energy storage, does not take into account the coordination of the three, and does not consider the primary frequency regulation dead zone. It fills the research gap in the optimization allocation of primary frequency regulation power in wind-solar-storage power stations, can meet the actual engineering needs of primary frequency regulation power optimization allocation at the power station level, improves the primary frequency regulation coordinated control effect of integrated wind-solar-storage power stations, and promotes the improvement and efficient implementation of the integrated wind-solar-storage operation model.

[0092] Furthermore, by optimizing for the lowest possible frequency regulation cost of wind, solar, and energy storage power stations, the frequency regulation cost of these power stations can be effectively reduced.

[0093] Example 2:

[0094] Based on the same inventive concept as Embodiment 1, this embodiment of the invention discloses a device for determining the primary frequency regulation power of each power generation unit in a wind-solar-storage power station, with reference to... Figure 3 As shown, it includes:

[0095] The acquisition module is used to acquire the primary frequency regulation dead zone of each power generation unit in the wind-solar-storage power station;

[0096] The first determining module is used to determine the frequency regulation external characteristics of the wind-solar-storage power station based on the primary frequency regulation dead zone of each power generation unit.

[0097] The second determining module is used to determine the primary frequency regulation power of each power generation unit by performing optimization solution based on the frequency regulation external characteristics of the wind-solar-storage power station and the power constraints of each power generation unit, according to the optimization objective function.

[0098] The specific functions of each module described above are explained in the relevant content of the method in Embodiment 1, and will not be repeated here.

[0099] Example 3:

[0100] This invention discloses a computer-readable storage medium storing computer instructions. When these computer instructions are executed by a processor, they implement the steps of the method for determining the primary frequency regulation power of each power generation unit in a wind-solar-storage power station as described in Embodiment 1.

[0101] Example 4:

[0102] This invention discloses a computer device, with reference to... Figure 4 As shown, it includes:

[0103] Memory 430 is used to store computer instructions;

[0104] The processor 410 is configured to execute the computer instructions to implement the steps of the method for determining the primary frequency regulation power of each power generation unit in the wind-solar-storage power station described in Embodiment 1.

[0105] The communication interface 420 is used to connect to external devices or networks to achieve data exchange and communication;

[0106] The communication bus 440 is used to establish a connection channel between the processor 410 and the memory 430 to realize the transmission of data and instructions.

[0107] Example 5:

[0108] This invention discloses a computer program product, including computer instructions, which, when executed by a processor, implement the steps of the method for determining the primary frequency regulation power of each power generation unit in a wind-solar-storage power station as described in Embodiment 1.

[0109] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0110] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0111] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0112] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0113] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims. All of these forms are within the protection scope of the present invention.

Claims

1. A method for determining the primary frequency regulation power of each power generation unit in a wind-solar-storage power station, characterized in that, include: Obtain the primary frequency regulation dead zone of each power generation unit in the wind-solar-storage power station; Based on the primary frequency regulation dead zone of each power generation unit, the external frequency regulation characteristics of the wind-solar-storage power station are determined. Based on the frequency regulation characteristics of the wind-solar-storage power station and the power constraints of each power generation unit, the primary frequency regulation power of each power generation unit is determined by optimizing the objective function.

2. The method for determining the primary frequency regulation power of each power generation unit in a wind-solar-storage power station according to claim 1, characterized in that, The power generation units in the wind-solar-storage power station include energy storage units, photovoltaic arrays, and wind turbines; The frequency regulation response characteristics of the energy storage unit are expressed as follows: ， in, This indicates the primary frequency regulation power of the energy storage unit. This indicates that the primary frequency regulation of the energy storage unit increases the reserve power. This represents the droop factor of the energy storage unit. Indicates the system frequency deviation. This represents the absolute value of the primary frequency regulation dead zone of the energy storage unit. This represents the function that takes the maximum value. This indicates that the standby power of the energy storage unit is reduced during primary frequency regulation; The frequency modulation response characteristics of a photovoltaic array are expressed as follows: ， in, This indicates the primary frequency modulation power of the photovoltaic array. This indicates that the primary frequency modulation of the photovoltaic array increases the reserve power. This represents the sag factor of the photovoltaic array. This represents the absolute value of the primary frequency modulation dead zone of the photovoltaic array. This indicates that the standby power of the photovoltaic array is reduced during primary frequency modulation. The frequency regulation response characteristics of the fan are expressed as follows: ， in, This indicates the primary frequency regulation power of the fan. This indicates that the standby power of the primary frequency regulation of the fan has been increased. This indicates the sag coefficient of the fan. This represents the absolute value of the primary frequency regulation dead zone of the fan. This indicates that the standby power of the fan is reduced during primary frequency regulation.

3. The method for determining the primary frequency regulation power of each power generation unit in a wind-solar-storage power station according to claim 1, characterized in that, The expression for the frequency regulation external characteristics of the wind-solar-storage power station is as follows: ， in, This indicates the primary frequency regulation power of the wind, solar, and energy storage power station. Indicates the number of wind turbines. Indicates the first The primary frequency regulation power of each fan Indicates the number of photovoltaic arrays. Indicates the first The primary frequency modulation power of a photovoltaic array Indicates the number of energy storage units. Indicates the first The primary frequency regulation power of each energy storage unit.

4. The method for determining the primary frequency regulation power of each power generation unit in a wind-solar-storage power station according to claim 1, characterized in that, The power constraint expressions for each power generation unit are as follows: ， ， ， in, Indicates the first The standby power of each fan is reduced by the primary frequency regulation. Indicates the first The standby power of the primary frequency regulation of each fan is increased. Indicates the first The primary frequency regulation power of each fan Indicates the first The standby power of a photovoltaic array is reduced by frequency modulation. Indicates the first The primary frequency modulation of each photovoltaic array increases the reserve power. Indicates the first The primary frequency modulation power of a photovoltaic array Indicates the first The standby power of each energy storage unit is reduced by frequency regulation. Indicates the first The primary frequency regulation of each energy storage unit increases the reserve power. Indicates the first The primary frequency regulation power of each energy storage unit.

5. The method for determining the primary frequency regulation power of each power generation unit in a wind-solar-storage power station according to claims 3 and 4, characterized in that, The expression for the optimization objective function is as follows: ， in, This represents the function that takes the minimum value. Indicates the number of wind turbines. Indicates the first The primary frequency regulation power of each fan Indicates the number of photovoltaic arrays. Indicates the first The primary frequency modulation power of a photovoltaic array Indicates the number of energy storage units. Indicates the first The primary frequency regulation power of each energy storage unit This represents the preset unit frequency regulation cost coefficient for the fan. This represents the unit frequency modulation cost coefficient of the preset photovoltaic array. This represents the unit frequency regulation cost coefficient of the preset energy storage unit.

6. The method for determining the primary frequency regulation power of each power generation unit in a wind-solar-storage power station according to claim 1, characterized in that, The primary frequency regulation power of each power generation unit is determined by optimizing the objective function using a convex optimization algorithm.

7. A device for determining the primary frequency regulation power of each power generation unit in a wind-solar-storage power station, characterized in that, The method for determining the primary frequency regulation power of each power generation unit in a wind-solar-storage power station as described in any one of claims 1-6 includes: The acquisition module is used to acquire the primary frequency regulation dead zone of each power generation unit in the wind-solar-storage power station; The first determining module is used to determine the frequency regulation external characteristics of the wind-solar-storage power station based on the primary frequency regulation dead zone of each power generation unit. The second determining module is used to determine the primary frequency regulation power of each power generation unit by performing optimization solution based on the frequency regulation external characteristics of the wind-solar-storage power station and the power constraints of each power generation unit, according to the optimization objective function.

8. A computer-readable storage medium storing computer instructions thereon, characterized in that, When the computer instruction is executed by the processor, it implements the steps of the method for determining the primary frequency regulation power of each power generation unit in the wind-solar-storage power station as described in any one of claims 1-6.

9. A computer device, characterized in that, include: Memory, used to store computer instructions; A processor is configured to execute the computer instructions to implement the steps of the method for determining the primary frequency regulation power of each power generation unit in a wind-solar-storage power station as described in any one of claims 1-6. A communication interface is used to connect to external devices or networks to enable data exchange and communication. A communication bus is used to establish a connection channel between the processor and the memory to realize the transmission of data and instructions.

10. A computer program product comprising computer instructions, characterized in that, When executed by the processor, the computer instructions implement the steps of the method for determining the primary frequency regulation power of each power generation unit in the wind-solar-storage power station as described in any one of claims 1-6.

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