Optical storage combined frequency modulation hierarchical control method and system

Abstract

The invention discloses a light storage combined frequency modulation hierarchical control method and system, and the method comprises the steps: obtaining automatic power generation control instruction data of a hybrid energy storage system, and obtaining a hybrid energy storage power adjustment instruction according to the automatic power generation control instruction data; determining a power distribution value of the super capacitor based on the hybrid energy storage power regulation instruction; and grouping the energy storage system to obtain a grouping result, and performing power distribution on the interior of the energy storage system by using a double-layer power distribution method. According to the invention, fine management of power distribution of the hybrid energy storage system is realized, and the charging and discharging frequency and depth of energy storage equipment are effectively reduced, so that the energy storage life is prolonged. Meanwhile, the strategy also optimizes the grouping and management of the battery energy storage units, improves the overall efficiency and reliability of the energy storage system, and provides a more stable and efficient adjustment service for a new energy power generation system.

Description

Technical Field

[0001] The present invention relates to the technical field of hybrid energy storage systems, and in particular to a photovoltaic energy storage combined frequency modulation hierarchical control method and system. Background Art

[0002] With the increasing awareness of global environmental protection and sustainable development, the development and utilization of new energy has become the core of energy strategies of various countries. The "dual carbon" goal proposed by my country has promoted the large-scale access of new energy to the power grid, which has brought unprecedented challenges to the stable operation of hybrid energy storage systems. The intermittent and uncertain nature of renewable energy power generation has exacerbated the problem of power imbalance between source, grid and load, and energy storage technology has therefore become the key to solving this problem. The hybrid energy storage system (HESS), by combining energy-type energy storage and power-type energy storage, demonstrates the complementary advantages of energy density and power density. It not only responds quickly and can be charged and discharged flexibly, but also has high economic efficiency. It is widely used in the field of renewable energy power generation, especially in photovoltaic power generation. The hybrid energy storage system can effectively assist automatic generation control (AGC), provide precise regulation, and balance the power of the power grid.

[0003] However, the existing hybrid energy storage technology still has shortcomings. First, the power allocation strategy is simple and does not fully consider the characteristics of the energy storage medium, resulting in a shortened life of the energy storage equipment. Lithium iron phosphate batteries are prone to aging during frequent charging and discharging, while supercapacitors may degrade in performance due to underutilization. Secondly, the grouping and management of energy storage batteries lack refinement, and the differences in SOC (state of charge) and capacity between battery cells are not properly handled, which can easily lead to excessive use or idleness of battery cells, affecting system efficiency and reliability. Therefore, formulating a reasonable hybrid energy storage power allocation strategy and battery grouping management method to extend the life of energy storage and improve the performance of new energy power generation systems are important issues that need to be addressed. Summary of the invention

[0004] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0005] In view of the above existing problems, the present invention is proposed. Therefore, the present invention provides a stratified control method for combined frequency modulation of photovoltaic and energy storage to solve the problem of how to effectively extend the service life of the hybrid energy storage system and optimize the power allocation strategy in the process of combined frequency modulation of photovoltaic and energy storage.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0007] In a first aspect, the present invention provides a PV-storage joint frequency modulation hierarchical control method, comprising:

[0008] Acquire automatic power generation control instruction data of the hybrid energy storage system, and acquire hybrid energy storage power adjustment instructions according to the automatic power generation control instruction data;

[0009] Determining a power allocation value of the supercapacitor based on the hybrid energy storage power adjustment instruction;

[0010] The energy storage systems are grouped to obtain grouping results, and a double-layer power allocation method is used to allocate power within the energy storage systems.

[0011] As a preferred solution of the photovoltaic energy storage combined frequency modulation hierarchical control method of the present invention, wherein: according to the automatic power generation control instruction data, obtaining the hybrid energy storage power adjustment instruction includes:

[0012] According to the automatic power generation control instruction and the power generation power of the photovoltaic unit, a current power generation instruction of the photovoltaic unit is obtained;

[0013] The power generation instruction of the hybrid energy storage system is obtained according to the current power generation instruction of the photovoltaic group and the real-time power generation instruction of the hybrid energy storage system.

[0014] As a preferred solution of the photovoltaic energy storage combined frequency modulation hierarchical control method of the present invention, wherein: determining the power allocation value of the supercapacitor includes:

[0015] The supercapacitor charge state is acquired, and the power allocation value of the supercapacitor is calculated according to the supercapacitor charge state.

[0016] As a preferred solution of the photovoltaic energy storage combined frequency modulation hierarchical control method of the present invention, wherein: using a double-layer power allocation method to allocate power inside the energy storage system includes:

[0017] Calculate the power distribution value of the energy storage system according to the hybrid energy storage power adjustment instruction and the power distribution value of the supercapacitor;

[0018] Power is distributed within the energy storage system according to the grouping result and the power distribution value of the energy storage system.

[0019] As a preferred solution of the photovoltaic energy storage combined frequency modulation hierarchical control method of the present invention, wherein: calculating the power allocation value of the supercapacitor includes:

[0020] When the supercapacitor state of charge value is in the normal charging area or the cut-off area, the supercapacitor enters the locked state, and the energy storage system assumes the hybrid energy storage power adjustment value;

[0021] When the supercapacitor state of charge value is in the normal discharge zone, the power generation values ​​borne by the supercapacitor and the energy storage system are calculated.

[0022] As a preferred solution of the photovoltaic energy storage combined frequency modulation hierarchical control method of the present invention, the power generation value borne by the supercapacitor and the energy storage system is calculated as follows:

[0023] P r,b,t =P r,HESS,t -P r,sc,t

[0024] Among them, P r,SC,t , P r,b,t are the power distribution values ​​of supercapacitor and energy storage system respectively, P r,HESS,t It is the hybrid energy storage power adjustment value.

[0025] As a preferred solution of the photovoltaic energy storage combined frequency modulation hierarchical control method described in the present invention, the hybrid energy storage system power generation instruction includes:

[0026] When the current power generation instruction of the photovoltaic unit is less than or equal to the real-time automatic power generation control of the hybrid energy storage system, the photovoltaic unit generates electricity according to the current power generation instruction of the photovoltaic unit, the hybrid energy storage power adjustment value is positive, and the hybrid energy storage system discharges;

[0027] When the current power generation instruction of the photovoltaic unit is greater than the real-time automatic power generation control, the photovoltaic unit generates electricity according to the real-time automatic power generation control, and the hybrid energy storage power adjustment value is zero.

[0028] In a second aspect, the present invention provides a system for PV-storage combined frequency modulation hierarchical control, comprising:

[0029] An acquisition module, used to acquire automatic power generation control instruction data of a hybrid energy storage system;

[0030] A calculation module, used to obtain a hybrid energy storage power adjustment instruction according to the automatic power generation control instruction data; and determine a power allocation value of the supercapacitor based on the hybrid energy storage power adjustment instruction;

[0031] The allocation module is used to group the energy storage system to obtain a grouping result, and to use a double-layer power allocation method to allocate power inside the energy storage system.

[0032] In a third aspect, the present invention provides a computing device, comprising:

[0033] Memory and processor;

[0034] The memory is used to store computer executable instructions, and the processor is used to execute the computer executable instructions. When the computer executable instructions are executed by the processor, the steps of the photovoltaic energy storage joint frequency modulation layered control method are implemented.

[0035] In a fourth aspect, the present invention provides a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, implement the steps of the photovoltaic-storage joint frequency modulation hierarchical control method.

[0036] Compared with the prior art, the present invention has the following beneficial effects: the present invention realizes the refined management of the power distribution of the hybrid energy storage system, effectively reduces the frequency and depth of charge and discharge of the energy storage equipment, thereby extending the energy storage life. At the same time, the strategy also optimizes the grouping and management of battery energy storage units, improves the overall efficiency and reliability of the energy storage system, and provides a more stable and efficient regulation service for the new energy power generation system. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0038] Figure 1 This is a schematic diagram of the overall process of a photovoltaic energy storage combined frequency modulation hierarchical control method according to an embodiment of the present invention;

[0039] Figure 2 A schematic diagram of the internal structure of a computer device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0040] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the drawings of the specification. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary persons in the art without creative work should fall within the scope of protection of the present invention.

[0041] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0042] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0043] The present invention is described in detail with reference to schematic diagrams. When describing the embodiments of the present invention, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0044] At the same time, in the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "upper, lower, inner and outer" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the system or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first, second or third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0045] In the present invention, unless otherwise clearly specified and limited, the terms "install, connect, connect" should be understood in a broad sense, for example: it can be a fixed connection, a detachable connection or an integral connection; it can also be a mechanical connection, an electrical connection or a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] Example 1

[0047] Reference Figure 1 , is an embodiment of the present invention, and provides a PV-storage joint frequency modulation hierarchical control method, comprising:

[0048] S100: Obtaining automatic power generation control instruction data of the hybrid energy storage system, and obtaining a hybrid energy storage power adjustment instruction according to the automatic power generation control instruction data;

[0049] In an embodiment of the present application, the automatic power generation control instruction data of the hybrid energy storage system includes historical automatic power generation control instructions and real-time automatic power generation control instruction data; according to the automatic power generation control instruction data of the hybrid energy storage system, the grid frequency deviation and energy storage charge state are detected in real time.

[0050] Preferably, according to the automatic power generation control instruction and the power generation power of the photovoltaic unit, the current power generation instruction of the photovoltaic unit is obtained;

[0051] Preferably, the power generation instruction of the hybrid energy storage system is obtained according to the current power generation instruction of the photovoltaic unit and the real-time power generation instruction of the hybrid energy storage system.

[0052] In the embodiment of the present application, the maximum power generation power PVmax of the photovoltaic group and the historical automatic power generation control instruction are taken, and the current automatic power generation control instruction of the photovoltaic power generation is selected as the minimum value PVmin of the two;

[0053] In the embodiment of the present application, the hybrid energy storage power adjustment instruction is the difference between the actual automatic power generation control instruction and PVmin.

[0054] In another possible embodiment, the hybrid energy storage power adjustment instruction may be obtained by comprehensive calculation based on the real-time load demand of the hybrid energy storage system, the grid stability requirement, and the current state of the hybrid energy storage system;

[0055] In an optional embodiment, the current state includes the remaining capacity of the energy storage device, the charge and discharge rate limit, etc.

[0056] Preferably, when the current power generation instruction of the photovoltaic unit is less than or equal to the real-time automatic power generation control of the hybrid energy storage system, the photovoltaic unit generates electricity according to the current power generation instruction of the photovoltaic unit, the hybrid energy storage power adjustment value is positive, and the hybrid energy storage system discharges;

[0057] Preferably, when the current power generation instruction of the photovoltaic unit is greater than the real-time automatic power generation control, the photovoltaic unit generates power according to the real-time automatic power generation control, and the hybrid energy storage power adjustment value is zero.

[0058] It should be noted that the present invention sets the current power generation instruction of the photovoltaic unit to the smaller value between the maximum power generation power of the photovoltaic unit and the minimum value calculated based on the historical automatic power generation control instruction through the optimization strategy, thereby ensuring the rationality and feasibility of the power generation instruction. On this basis, the hybrid energy storage power adjustment instruction is determined as the difference between the actual automatic power generation control instruction and the current power generation instruction of the photovoltaic unit, realizing the precise control of the charging and discharging state of the hybrid energy storage system. When the current power generation instruction of the photovoltaic unit meets or is lower than the real-time demand of the hybrid energy storage system, the hybrid energy storage system discharges to supplement electricity; when the power generation capacity of the photovoltaic unit exceeds the real-time demand, the hybrid energy storage system does not participate in the adjustment, ensuring the stable operation and efficient power generation of the entire hybrid energy storage system.

[0059] S102: Determine the power allocation value of the supercapacitor based on the hybrid energy storage power adjustment instruction;

[0060] In an optional embodiment, the supercapacitor may be an electric double layer capacitor or a pseudo capacitor.

[0061] Preferably, a supercapacitor charge state is obtained, and a power allocation value of the supercapacitor is calculated according to the supercapacitor charge state;

[0062] Preferably, when the supercapacitor state of charge value is in the normal charging area or the cut-off area, the supercapacitor enters a locked state, and the energy storage system assumes the hybrid energy storage power adjustment value;

[0063] Preferably, when the state of charge value of the supercapacitor is in the normal discharge region, the power generation values ​​borne by the supercapacitor and the energy storage system are calculated respectively.

[0064] In the embodiment of the present application, the power generation value borne by the supercapacitor and the energy storage system is calculated as follows:

[0065] P r,b,t =P r,HESS,t -P r,sc,t

[0066] Among them, P r,SC,t , P r,b,t are the power distribution values ​​of supercapacitor and energy storage system respectively, P r,HESS,t It is the hybrid energy storage power adjustment value.

[0067] It should be noted that the hybrid energy storage power regulation includes supercapacitors and energy storage systems.

[0068] It should also be noted that the present invention effectively avoids overcharging and over-discharging of the supercapacitor and improves its service life by calculating the power allocation value according to the charge state of the supercapacitor and flexibly adjusting the working mode of the supercapacitor and the energy storage system under different charge states. This refined power allocation strategy ensures that the hybrid energy storage system can respond to the frequency modulation needs of the power grid more efficiently.

[0069] S104: Grouping the energy storage systems to obtain grouping results, and using a double-layer power allocation method to allocate power within the energy storage systems;

[0070] In an optional embodiment, the energy storage system may include lithium iron phosphate batteries, sodium sulfur batteries, flow batteries, etc.; these different types of energy storage technologies have their own characteristics in terms of energy storage, power output, safety and cost-effectiveness, and are selected according to actual applications.

[0071] In the embodiments of the present application, a lithium iron phosphate battery is selected for subsequent illustration.

[0072] Preferably, the power distribution value of the energy storage system is calculated according to the hybrid energy storage power adjustment instruction and the power distribution value of the supercapacitor;

[0073] Preferably, power is distributed within the energy storage system according to the grouping result and the power distribution value of the energy storage system.

[0074] In the embodiment of the present application, the grouping method is: all lithium iron phosphate battery cells are numbered and arranged in descending order according to the state of charge, and the state of charge above 0.5 is placed in battery group N1, the state of charge between 0.2 and 0.5 is placed in battery group N2, and the rest is placed in battery group N3;

[0075] In the embodiment of the present application, the battery group N1 is a priority discharge group, the battery group N2 is a standby group, and the battery group N3 is a cut-off group.

[0076] In an optional embodiment, the method for grouping the energy storage system may also be: grouping according to the temperature state of the lithium iron phosphate battery unit;

[0077] Exemplarily, all lithium iron phosphate battery cells are numbered and their current temperatures are measured, and battery cells with temperatures within the optimal operating temperature range of 20°C to 30°C are placed in battery pack T1, which is considered to be the group with the highest efficiency and the most stable performance; battery cells with slightly higher temperatures but still within an acceptable range of 30°C to 40°C are placed in battery pack T2 as a suboptimal choice; and battery cells with temperatures that are too low or too high and outside the ideal operating range are placed in battery pack T3.

[0078] In the embodiment of the present application, a double-layer power allocation method is used to allocate power inside the energy storage system. The specific process is as follows:

[0079] When the capacity of the lithium iron phosphate battery in group N1 is greater than the power allocation value of the energy storage system, group N1 takes on all the regulated power, and the regulated power value of each lithium iron phosphate battery is allocated in proportion to the state of charge value;

[0080] In the embodiment of the present application, the regulated power value of each lithium iron phosphate battery is allocated in proportion to the state of charge value, and the proportional allocation formula is expressed as:

[0081]

[0082] Among them, SOC i is the state of charge value of the ith battery in the N1 battery group, and n is the total number of batteries in the N1 group.

[0083] When the lithium iron phosphate battery capacity of group N1 is less than the power allocation value of the energy storage system, group N1 is still allocated according to the proportion of the equal proportional allocation formula according to the maximum output power of the group, and the shortfall is allocated by group N2 according to the proportion of the equal proportional allocation formula.

[0084] When there is still a shortage according to group N2, N2 is allocated in proportion to the maximum output power of the group according to the equal proportional allocation formula.

[0085] The above is a schematic scheme of a photovoltaic-storage joint frequency modulation hierarchical control method of this embodiment. It should be noted that the technical scheme of the photovoltaic-storage joint frequency modulation hierarchical control system and the technical scheme of the photovoltaic-storage joint frequency modulation hierarchical control method described above belong to the same concept. For details not described in detail in the technical scheme of the photovoltaic-storage joint frequency modulation hierarchical control system in this embodiment, please refer to the description of the technical scheme of the photovoltaic-storage joint frequency modulation hierarchical control method described above.

[0086] Example 2

[0087] This embodiment provides a photovoltaic energy storage combined frequency modulation hierarchical control system, including:

[0088] An acquisition module, used to acquire automatic power generation control instruction data of a hybrid energy storage system;

[0089] A calculation module is used to obtain a hybrid energy storage power adjustment instruction according to the automatic power generation control instruction data; based on the hybrid energy storage power adjustment instruction, determine the power distribution value of the supercapacitor;

[0090] The allocation module is used to group the energy storage system to obtain a grouping result, and to use a double-layer power allocation method to allocate power within the energy storage system.

[0091] The above-mentioned unit modules may be embedded in or independent of a processor in a computer device in the form of hardware, or may be stored in a memory in a computer device in the form of software, so that the processor can call and execute operations corresponding to the above-mentioned modules.

[0092] Example 3

[0093] This embodiment provides a computer device, which may be a terminal, and its internal structure diagram may be as follows: Figure 2 As shown. The computer device includes a processor, a memory, a communication interface, a display screen and an input device connected through a system bus. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The communication interface of the computer device is used to communicate with an external terminal in a wired or wireless manner, and the wireless manner can be achieved through WIFI, an operator network, NFC (near field communication) or other technologies. When the computer program is executed by the processor, a method for layered control of combined frequency modulation of optical storage is implemented. The display screen of the computer device can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer device can be a touch layer covering the display screen, or a key, trackball or touchpad set on the computer device housing, or an external keyboard, touchpad or mouse.

[0094] The present embodiment also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements: obtaining automatic power generation control instruction data of a hybrid energy storage system, obtaining a hybrid energy storage power adjustment instruction based on the automatic power generation control instruction data; determining a power allocation value of a supercapacitor based on the hybrid energy storage power adjustment instruction; grouping the energy storage system to obtain a grouping result, and using a double-layer power allocation method to allocate power within the energy storage system.

[0095] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A stratified control method for combined frequency modulation of photovoltaic and energy storage, characterized in that: include: Acquire automatic power generation control instruction data of the hybrid energy storage system, and acquire hybrid energy storage power adjustment instructions according to the automatic power generation control instruction data; Determining a power allocation value of the supercapacitor based on the hybrid energy storage power adjustment instruction; The energy storage systems are grouped to obtain grouping results, and a double-layer power allocation method is used to allocate power within the energy storage systems.

2. The photovoltaic energy storage combined frequency modulation hierarchical control method according to claim 1, characterized in that: According to the automatic power generation control instruction data, obtaining the hybrid energy storage power adjustment instruction includes: According to the automatic power generation control instruction and the power generation power of the photovoltaic unit, obtaining the current power generation instruction of the photovoltaic unit; The power generation instruction of the hybrid energy storage system is obtained according to the current power generation instruction of the photovoltaic group and the real-time power generation instruction of the hybrid energy storage system.

3. The photovoltaic energy storage combined frequency modulation hierarchical control method according to claim 1 or 2, characterized in that: Determining the power allocation value of the supercapacitor includes, The supercapacitor charge state is acquired, and the power allocation value of the supercapacitor is calculated according to the supercapacitor charge state.

4. The photovoltaic energy storage combined frequency modulation hierarchical control method as claimed in claim 3, characterized in that: Using a double-layer power distribution method to distribute power within the energy storage system includes: Calculate the power distribution value of the energy storage system according to the hybrid energy storage power adjustment instruction and the power distribution value of the supercapacitor; Power is distributed within the energy storage system according to the grouping result and the power distribution value of the energy storage system.

5. The photovoltaic energy storage combined frequency modulation hierarchical control method as claimed in claim 4, characterized in that: Calculating the power allocation value of the supercapacitor includes, When the supercapacitor state of charge value is in the normal charging area or the cut-off area, the supercapacitor enters the locked state, and the energy storage system assumes the hybrid energy storage power adjustment value; When the supercapacitor state of charge value is in the normal discharge zone, the power generation values ​​borne by the supercapacitor and the energy storage system are calculated.

6. The photovoltaic energy storage combined frequency modulation hierarchical control method according to claim 5, characterized in that: The power generation value of the supercapacitor and the energy storage system is calculated as follows: P r,b,t =P r,HESS,t -P r,sc,t Among them, P r,SC,t , P r,b,t are the power distribution values ​​of supercapacitor and energy storage system respectively, P r,HESS,t It is the hybrid energy storage power adjustment value.

7. The photovoltaic energy storage combined frequency modulation hierarchical control method according to claim 6, characterized in that: Hybrid energy storage system power generation instructions include: When the current power generation instruction of the photovoltaic unit is less than or equal to the real-time automatic power generation control of the hybrid energy storage system, the photovoltaic unit generates electricity according to the current power generation instruction of the photovoltaic unit, the hybrid energy storage power adjustment value is positive, and the hybrid energy storage system discharges; When the current power generation instruction of the photovoltaic unit is greater than the real-time automatic power generation control, the photovoltaic unit generates electricity according to the real-time automatic power generation control, and the hybrid energy storage power adjustment value is zero.

8. A system for combined frequency modulation and hierarchical control of photovoltaic and energy storage, characterized in that: include, An acquisition module, used to acquire automatic power generation control instruction data of a hybrid energy storage system; A calculation module, used for obtaining a hybrid energy storage power adjustment instruction according to the automatic power generation control instruction data; Determining a power allocation value of the supercapacitor based on the hybrid energy storage power adjustment instruction; The allocation module is used to group the energy storage system to obtain a grouping result, and to use a double-layer power allocation method to allocate power inside the energy storage system.

9. An electronic device, comprising: Memory and processor; The memory is used to store computer executable instructions, and the processor is used to execute the computer executable instructions. When the computer executable instructions are executed by the processor, the steps of the photovoltaic energy storage combined frequency modulation layered control method described in any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, implement the steps of the photovoltaic-storage joint frequency modulation hierarchical control method as described in any one of claims 1 to 7.

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