A user-side energy storage distributed control method and system

Abstract

The present invention belongs to the technical field of user-side energy storage control, and provides a user-side energy storage distributed control method and system, including: obtaining the output power of the user-side energy storage; selecting the control mode of the user-side energy storage according to the obtained output power to complete the distributed control of the user-side energy storage; wherein, the control mode of the user-side energy storage includes power balance consistency control and SOC balance consistency control. During the selection of the user-side energy storage control mode, a switching function for determining the SOC balance and power balance control modes is determined based on the user-side energy storage cluster regulation method, and the control mode of the user-side energy storage is selected according to the control mode switching coefficient in the determined switching function.

Description

Technical Field

[0001] The present invention belongs to the technical field of user-side energy storage control, and particularly relates to a user-side energy storage distributed control method and system. Background Technique

[0002] The statements in this part only provide background technical information related to the present invention, and do not necessarily constitute prior art.

[0003] With the development of the power system and the wide access of new energy, the role of user-side energy storage in the power system has become increasingly prominent. User-side energy storage systems, especially electrochemical energy storage systems, have achieved rapid development and large-scale application in recent years due to technological progress and cost reduction. User-side energy storage systems can realize the absorption, storage, and output of electrical energy of power users, smooth the output of new energy, improve the peak shaving and valley filling ability of the power system, and strongly support the new power system with new energy as the main body.

[0004] There are certain limitations in the regulation of user-side energy storage in the prior art. Compared with centralized energy storage on the source side and grid side, user-side energy storage is more dispersed, with smaller single-unit capacity and larger quantity, making it difficult to carry out centralized regulation. In addition, user-side energy storage belongs to different property right owners, and the centralized direct control mode is more difficult to be accepted by users compared with the distributed control mode. The distributed control method has the characteristics of strong control robustness and decentralization, and is more suitable for the coordinated control of a large number of distributed energy storage. In terms of the SOC consistency regulation method of user-side energy storage, it is mostly applied to the droop control scheme of energy storage converters in island scenarios. And for virtual power plants, it is required that the aggregated resources are always in the grid-connected state. In the case of achieving initial power consistency without a droop control loop, aggregators also face the problem of aggregating user-side energy storage to achieve SOC balance. Summary of the Invention

[0005] To solve the above problems, the present invention proposes a user-side energy storage distributed control method and system, which considers the distributed control of user-side energy storage for SOC balance and power balance, and realizes the switching between two different control modes of output power consistency control and SOC consistency control through a cluster regulation algorithm to adapt to different grid regulation requirements and enhance the safety and reliability of grid operation.

[0006] According to some embodiments, the first solution of the present invention provides a user-side energy storage distributed control method, which adopts the following technical solutions:

[0007] A user-side energy storage distributed control method includes:

[0008] Obtain the output power of the user-side energy storage;

[0009] Select the control mode of the user-side energy storage according to the obtained output power to complete the distributed control of the user-side energy storage;

[0010] Among them, the control modes of the user-side energy storage include power balance consistency control and SOC balance consistency control. During the selection of the user-side energy storage control mode, based on the cluster regulation method of the user-side energy storage, the switching function for SOC balance and power balance control modes is determined, and the control mode of the user-side energy storage is selected according to the control mode switching coefficient in the determined switching function.

[0011] As a further technical limitation, during the process of power balance consistency control, according to the obtained output power of the user-side energy storage, the consistency target of the output power of the user-side energy storage is determined; considering the leader-follower model, the consistency control rate of the output power of the user-side energy storage is obtained to complete the power balance consistency control of the user-side energy storage.

[0012] Further, the obtained consistency control rate of the output power of the user-side energy storage is

[0013]

[0014] where u i is the output of the consistency algorithm controller, z i is the consistency algorithm control rate function; k u is the consistency algorithm gain, b i is the indication parameter for receiving the leader signal. If v i is 1, it means that the i-th energy storage receives the leader signal, otherwise it is 0; N i is the set of user-side energy storages that communicate with the i-th energy storage; P ref is the output power reference of the energy storage and is the leader power; P i set is the set of active powers of the i-th energy storage inverter, Q i set is the set of reactive powers of the i-th energy storage inverter; P rate,i is the rated capacity of the i-th user-side energy storage, P o,i is the output power of the i-th user-side energy storage.

[0015] As a further technical limitation, during the process of SOC balance consistency control, according to the obtained output power of the user-side energy storage, the SOC of the i-th user-side energy storage device at time t is determined. Considering the SOC transformation function, the consistency control rate of the user-side energy storage SOC is obtained to complete the SOC balance consistency control of the user-side energy storage.

[0016] Further, the obtained consistency control rate z of the user-side energy storage SOC i is

[0017]

[0018] where k SOC is the SOC consistency gain; func(·) is the SOC transformation function; P ref is the output power reference of the energy storage; P o,i is the output power of the i-th user-side energy storage;

[0019] SOC i (t) is the SOC of the i-th user-side energy storage device at time t, that is

[0020]

[0021] where η i is the charge-discharge efficiency, t0 is the initial time for SOC measurement of the user-side energy storage device, is the maximum capacity of the energy storage.

[0022] As a further technical limitation, when the obtained control mode switching coefficient is 1, the user-side energy storage adopts power balance consistency control; when the obtained control mode switching coefficient is 1, the user-side energy storage adopts SOC balance consistency control.

[0023] According to some embodiments, the second solution of the present invention provides a distributed control system for user-side energy storage, adopting the following technical solution:

[0024] A distributed control system for user-side energy storage, comprising:

[0025] An acquisition module, which is configured to acquire the output power of the user-side energy storage;

[0026] A control module, which is configured to select the control mode of the user-side energy storage according to the acquired output power and complete the distributed control of the user-side energy storage;

[0027] where the control mode of the user-side energy storage includes power balance consistency control and SOC balance consistency control. During the selection of the user-side energy storage control mode, based on the cluster regulation method for the user-side energy storage, the switching function for determining the SOC balance and power balance control modes is determined, and the control mode of the user-side energy storage is selected according to the control mode switching coefficient in the determined switching function.

[0028] According to some embodiments, the third solution of the present invention provides a computer-readable storage medium, adopting the following technical solution:

[0029] A computer-readable storage medium, on which a program is stored, and when the program is executed by a processor, it implements the steps in a distributed control method for user-side energy storage as described in the first solution of the present invention.

[0030] According to some embodiments, the fourth solution of the present invention provides an electronic device, adopting the following technical solution:

[0031] An electronic device includes a memory, a processor, and a program stored on the memory and running on the processor. When the processor executes the program, it implements the steps in a user-side energy storage distributed control method as described in the first solution of the present invention.

[0032] According to some embodiments, the fifth solution of the present invention provides a computer program product, adopting the following technical solution:

[0033] A computer program product includes software code, and the program in the software code executes the steps in a user-side energy storage distributed control method as described in the first solution of the present invention.

[0034] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0035] The present invention utilizes multi-user-side energy storage distributed control considering SOC balance and power balance. The user-side energy storage can switch from the output power consistency control mode to the SOC consistency control mode under different scenarios to enhance the operation reliability of the system, ensure the safe operation of the energy storage cluster when the energy storage SOC is close to the limit, and meet the grid regulation requirements at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The accompanying drawings forming a part of this embodiment are used to provide a further understanding of this embodiment. The illustrative embodiments and descriptions thereof of this embodiment are used to explain this embodiment and do not constitute an improper limitation of this embodiment.

[0037] Figure 1 It is a flowchart of the user-side energy storage distributed control method in the first embodiment of the present invention;

[0038] Figure 2 It is a structural block diagram of the user-side energy storage distributed control system in the second embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0039] The present invention will be further described below in conjunction with the drawings and embodiments.

[0040] It should be noted that the following detailed descriptions are all exemplary and are intended to provide further explanations for the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present application belongs.

[0041] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular forms are also intended to include the plural forms. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they specify the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0042] In the present invention, terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only relational terms determined for the convenience of describing the structural relationship of each component or element of the present invention and do not specifically refer to any component or element in the present invention. It should not be construed as a limitation to the present invention.

[0043] In the present invention, terms such as "fixed connection", "connected", "connected to" should be understood in a broad sense, which may mean a fixed connection, an integral connection or a detachable connection; it may be directly connected or indirectly connected through an intermediate medium. For those related scientific research or technical personnel in the field, the specific meanings of the above terms in the present invention can be determined according to specific circumstances and should not be construed as a limitation to the present invention.

[0044] Without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0045] Embodiment 1

[0046] Embodiment 1 of the present invention introduces a distributed control method for user-side energy storage.

[0047] As Figure 1 shown, a distributed control method for user-side energy storage includes:

[0048] Obtain the output power of the user-side energy storage;

[0049] According to the obtained output power, select the control mode of the user-side energy storage to complete the distributed control of the user-side energy storage;

[0050] Among them, the control mode of the user-side energy storage includes power balance consistency control and SOC balance consistency control. During the selection of the user-side energy storage control mode, based on the cluster regulation method for the user-side energy storage, a switching function for determining the SOC balance and power balance control modes is determined, and the control mode of the user-side energy storage is selected according to the control mode switching coefficient in the determined switching function.

[0051] In this embodiment, the distributed control logic of the user-side energy storage considering power balance is as follows: When aggregating and regulating multiple user-side energy storage inverters for demand-side entities such as virtual power plants, using centralized point-to-point real-time power command sending will bring huge data and communication pressure to the central controller. Therefore, the consistency goal of the output power of the user-side energy storage is designed, and based on the leader-follower model of the consensus algorithm, the control rate of the output power consistency of the energy storage inverter is realized, and the power balance is achieved by using the consistency control rate of the output power of the user-side energy storage.

[0052] In this embodiment, the formula for the consistency goal of the output power of the user-side energy storage is:

[0053]

[0054] Among them, P rate,i is the rated capacity of the i-th user-side energy storage, P o,i is the output power of the i-th user-side energy storage, and n is the total number of energy storages in the user-side energy storage cluster.

[0055] Based on the leader-follower model of the consensus algorithm, the formula for the consistency control rate of the output power of the user-side energy storage is:

[0056]

[0057] Among them, u i is the output of the consensus algorithm controller, z i is the consensus algorithm control rate function. k u is the consensus algorithm gain, b i is the indication parameter for receiving the leader signal. If v i is 1, it means that the i-th energy storage receives the leader signal, otherwise it is 0; N i is the set of user-side energy storages that communicate with the i-th energy storage, P ref is the output power reference of the energy storage and is the leader power; P i set is the set of active power of the i-th energy storage inverter, Q i set is the set of reactive power of the i-th energy storage inverter.

[0058] In this embodiment, the distributed control logic of the user-side energy storage considering SOC balance is as follows: Based on the SOC transformation function, the control mode switching coefficient γ is introduced to realize the switching between power consistency and SOC consistency control, and the control rate of the SOC consistency of the energy storage is realized, and the SOC balance is achieved by using the consistency control rate of the SOC of the user-side energy storage.

[0059] In this embodiment, the process of the distributed control of the user-side energy storage considering SOC balance is:

[0060] The SOC of the i-th user-side energy storage device at time t i (t) is expressed as:

[0061]

[0062] where η i is the charge-discharge efficiency, t0 is the initial time for SOC measurement of the user-side energy storage device, and is the maximum energy storage capacity.

[0063] The formula for the consistency control rate of the user-side energy storage SOC is:

[0064]

[0065] where k SOC is the SOC consistency gain; func(·) is the SOC transformation function.

[0066] In this embodiment, in the SOC consistency, the SOC value of the energy storage device cannot be directly used as the consistency variable. There are two specific reasons: First, the power of the energy storage system is bidirectional, with two scenarios of power output and power input. When the power output is specified as positive, as the power output increases, the rate of decrease of the energy storage SOC will accelerate. Directly using the SOC signal will form positive feedback and cause control failure; Second, there is an integral relationship between the energy storage system SOC and the output power. Directly using the SOC signal will introduce additional 0 poles in the control system and reduce the system control difficulty.

[0067] Therefore, the design principle of the SOC transformation function func(·) in this embodiment is:

[0068] (1) Different func(·) need to be designed for the output and input of the energy storage system. Among them, when P o,i is greater than 0, func(·) is a decreasing function. When P o,i is less than 0, func(·) is an increasing function.

[0069] (2) func(·) should be designed to have a certain non-linearity, and its growth rate in the [0, 1] interval should be lower than that of the linear function.

[0070] The SOC transformation function func(·) in this embodiment is:

[0071]

[0072] where a and b are the parameters of the SOC transformation function.

[0073] The control logic of the user - side energy storage cluster for integrated SOC balance and power balance in this embodiment is as follows: Design a switching function for the SOC balance and power balance control modes to achieve the switching between two different control modes, namely output power consistency control and SOC consistency control, in different scenarios. When the obtained call scenario is a normal scenario, the user - side energy storage adopts power balance consistency control; when the obtained call scenario is near the SOC limit, the user - side energy storage adopts SOC consistency control.

[0074] The control process of the user - side energy storage cluster for integrated SOC balance and power balance in this embodiment is as follows:

[0075] The switching function of the SOC balance and power balance control modes is as follows:

[0076]

[0077] Among them, γ is the control mode switching coefficient, which realizes the switching between power consistency and SOC consistency control. When γ is 1, the controller outputs power consistency control; when γ is 0, the controller is for energy storage SOC consistency control; k pu is the power consistency gain.

[0078] This embodiment uses a multi - user - side energy storage distributed control method considering SOC balance and power balance. The user - side energy storage can switch from the output power consistency control mode to the SOC consistency control mode in different scenarios to enhance the operation reliability of the system. This switching mechanism ensures that when the energy storage SOC is close to the limit, the energy storage cluster can operate safely while meeting the grid regulation requirements.

[0079] Embodiment 2

[0080] Embodiment 2 of the present invention introduces a user - side energy storage distributed control system.

[0081] As Figure 2 shown, a user - side energy storage distributed control system includes:

[0082] An acquisition module, which is configured to acquire the output power of the user - side energy storage;

[0083] A control module, which is configured to select the control mode of the user - side energy storage according to the acquired output power to complete the distributed control of the user - side energy storage;

[0084] Among them, the control modes of the user - side energy storage include power balance consistency control and SOC balance consistency control. During the selection of the user - side energy storage control mode, based on the user - side energy storage cluster regulation method, a switching function for the SOC balance and power balance control modes is determined, and the control mode of the user - side energy storage is selected according to the control mode switching coefficient in the determined switching function.

[0085] The detailed steps are the same as those of a user-side energy storage distributed control method provided in Embodiment 1, and will not be elaborated here.

[0086] Embodiment 3

[0087] Embodiment 3 of the present invention provides a computer-readable storage medium.

[0088] A computer-readable storage medium, on which a program is stored, and when the program is executed by a processor, it implements the steps in a user-side energy storage distributed control method as described in Embodiment 1 of the present invention.

[0089] The detailed steps are the same as those of a user-side energy storage distributed control method provided in Embodiment 1, and will not be elaborated here.

[0090] Those skilled in the art should understand that the embodiments of the present invention can be provided as a method, a system, or a computer program product. Therefore, the present invention can take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present invention can take the form of a computer program product implemented 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. The solutions in the embodiments of the present invention can be implemented in various computer languages. For example, object-oriented programming languages such as Java and interpreted scripting languages such as JavaScript.

[0091] The present invention is described with reference to the flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to the embodiments of the present invention. It should be understood that each flow and / or block in the flowchart and / or block diagram, and the combination of flows and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing devices to generate a machine, such that the instructions executed by the processor of the computer or other programmable data processing devices generate means for implementing the functions specified in Figure 1 one or more flows and / or blocks Figure 1 one or more blocks.

[0092] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing devices to work in a specific manner, such that the instructions stored in the computer-readable memory generate a manufactured article including instruction means that implement the functions specified in Figure 1 one or more flows and / or blocks Figure 1 one or more blocks.

[0093] These computer program instructions can also be loaded onto a computer or other programmable data processing apparatus, so that a series of operation steps are performed on the computer or other programmable apparatus to generate a computer-implemented process, and thus the instructions executed on the computer or other programmable apparatus provide steps for realizing the functions specified in one process or a plurality of processes and / or one block or a plurality of blocks in the flow Figure 1 one process or a plurality of processes and / or blocks Figure 1 steps for realizing the functions specified in one block or a plurality of blocks.

[0094] Although the preferred embodiments of the present invention have been described, those skilled in the art can make additional changes and modifications to these embodiments once they learn the basic creative concept. Therefore, the appended claims are intended to be construed to include the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0095] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these modifications and variations.

[0096] Embodiment 4

[0097] Embodiment 4 of the present invention provides an electronic device.

[0098] An electronic device includes a memory, a processor, and a program stored on the memory and running on the processor. When the processor executes the program, the steps in a user-side energy storage distributed control method as described in Embodiment 1 of the present invention are implemented.

[0099] The detailed steps are the same as those in a user-side energy storage distributed control method provided in Embodiment 1 and will not be described herein again.

[0100] Embodiment 5

[0101] Embodiment 5 of the present invention provides a computer program product.

[0102] A computer program product includes software code, and the program in the software code executes the steps in a user-side energy storage distributed control method as described in Embodiment 1 of the present invention.

[0103] The detailed steps are the same as those in a user-side energy storage distributed control method provided in Embodiment 1 and will not be described herein again.

[0104] Those skilled in the art should understand that the embodiments of the present invention can be provided as a method, a system, or a computer program product. Therefore, the present invention can take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present invention can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk memory, CD-ROM, optical memory, etc.) containing computer-usable program code. The solutions in the embodiments of the present invention can be implemented in various computer languages, for example, object-oriented programming languages such as Java and interpreted scripting languages such as JavaScript.

[0105] The present invention is described with reference to the flowcharts and / or block diagrams of methods, apparatuses (systems), and computer program products according to the embodiments of the present invention. It should be understood that each flow and / or block in the flowcharts and / or block diagrams, as well as the combination of flows and / or blocks in the flowcharts and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing devices to generate a machine, such that the instructions executed by the processor of the computer or other programmable data processing devices generate means for implementing the functions specified in Figure 1 one flow or multiple flows and / or blocks Figure 1 one block or multiple blocks.

[0106] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing devices to work in a specific manner, such that the instructions stored in the computer-readable memory generate a manufactured article including instruction means that implement the functions specified in Figure 1 one flow or multiple flows and / or blocks Figure 1 one block or multiple blocks.

[0107] These computer program instructions can also be loaded onto a computer or other programmable data processing devices, such that a series of operation steps are executed on the computer or other programmable devices to generate a computer-implemented process, so that the instructions executed on the computer or other programmable devices provide steps for implementing the functions specified in Figure 1 one flow or multiple flows and / or blocks Figure 1 one block or multiple blocks.

[0108] Although the preferred embodiments of the present invention have been described, those skilled in the art can make additional changes and modifications once they learn the basic creative concepts. Therefore, the appended claims are intended to be construed to include the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0109] Obviously, those skilled in the art can make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these modifications and variations.

[0110] The above are only the preferred embodiments of this example and are not intended to limit this example. For those skilled in the art, this example can have various changes and alterations. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of this example shall be included within the protection scope of this example.

Claims

1. A distributed control method for energy storage at the user side, characterized in that: include: Obtain the output power of the energy storage on the user side; According to the obtained output power, the control mode of the user-side energy storage is selected to complete the distributed control of the user-side energy storage; Among them, the control mode of the user-side energy storage includes power balance consistency control and SOC balance consistency control. In the process of selecting the control mode of the user-side energy storage, the switching function of the SOC balance and power balance control modes is determined based on the side energy storage cluster control method, and the control mode of the user-side energy storage is selected according to the control mode switching coefficient in the determined switching function; The switching function between the determined SOC balance and power balance control modes is: in, u i is the consistency algorithm controller output, z i is the control rate function of the consensus algorithm, k u is the consensus algorithm gain, P i set for i The active power of each energy storage inverter is aggregated. Q i set for i The reactive power of energy storage inverters is aggregated. P rate, i For the i The rated capacity of the user-side energy storage, P o,i For the i The output power of the user-side energy storage, P o,j For the j The output power of the energy storage on the user side is collected, P rate, j For the j The rated capacity of the user-side energy storage, v i To receive the indication parameter of the leader signal, k SOC is the SOC consistency gain; func(·) is the SOC transformation function; is the control mode switching coefficient to achieve the switching between power consistency and SOC consistency control. When it is 1, the controller outputs power consistency control. When it is 0, the controller is in energy storage SOC consistency control; k pu is the power consistency gain.

2. A user-side energy storage distributed control method as claimed in claim 1, characterized in that: In the process of power balance consistency control, the consistency target of the user-side energy storage output power is determined according to the obtained user-side energy storage output power; considering the leader-follower model, the consistency control rate of the user-side energy storage output power is obtained, and the power balance consistency control of the user-side energy storage is completed.

3. A user-side energy storage distributed control method as claimed in claim 2, characterized in that: The obtained consistency control rate of the user-side energy storage output power is ； in, u i is the consistency algorithm controller output, z i is the control rate function of the consistency algorithm; k u is the consensus algorithm gain, v i Is the indicator parameter for receiving the leader signal, if v i If it is 1, it means i The energy storage receives the leader signal, otherwise it is 0; N i For the i The energy storage unit maintains the communication of the user-side energy storage unit; P ref is the output power reference of the energy storage, and is the leader power; P i set for i The active power of each energy storage inverter is aggregated. Q i set for i Reactive power collection of energy storage inverters; P rate, i For the i The rated capacity of the user-side energy storage, P o,i For the i The output power of the user-side energy storage, P o,j For the j The output power of the user-side energy storage.

4. A user-side energy storage distributed control method as claimed in claim 1, characterized in that: In the process of the SOC balance consistency control, the first i User-side energy storage equipment t The SOC at the moment, considering the SOC transformation function, obtains the consistency control rate of the user-side energy storage SOC, and completes the SOC balance consistency control of the user-side energy storage.

5. A user-side energy storage distributed control method as claimed in claim 4, characterized in that: The obtained consistency control rate of the user-side energy storage SOC for ； in, k SOC is the SOC consistency gain; func(·) is the SOC transformation function; P ref The output power reference of the energy storage; P o,i For the i Output power of energy storage at the user side; For the j User-side energy storage equipment t SOC at all times; For the i User-side energy storage equipment t The SOC at the moment, ； in, is the charge and discharge efficiency, t 0 is the initial moment of SOC measurement of the energy storage device on the user side, The maximum energy storage capacity.

6. A user-side energy storage distributed control method as claimed in claim 1, characterized in that: When the obtained control mode switching coefficient is 1, the user-side energy storage adopts power balance consistency control; when the obtained control mode switching coefficient is 0, the user-side energy storage adopts SOC balance consistency control.

7. A user-side energy storage distributed control method system, characterized in that: include: An acquisition module, configured to acquire output power of energy storage at a user side; A control module, which is configured to select a control mode of the user-side energy storage according to the acquired output power, and complete the distributed control of the user-side energy storage; Among them, the control mode of the user-side energy storage includes power balance consistency control and SOC balance consistency control. In the process of selecting the control mode of the user-side energy storage, the switching function of the SOC balance and power balance control modes is determined based on the side energy storage cluster control method, and the control mode of the user-side energy storage is selected according to the control mode switching coefficient in the determined switching function; The switching function of the determined SOC balance and power balance control modes is: in, u i is the consistency algorithm controller output, z i is the control rate function of the consensus algorithm, k u is the consensus algorithm gain, P i set for i The active power of each energy storage inverter is aggregated. Q i set for i The reactive power of energy storage inverters is aggregated. P rate, i For the i The rated capacity of the user-side energy storage, P o,i For the i The output power of the user-side energy storage, P o,j For the j The output power of the energy storage on the user side is collected, P rate, j For the j The rated capacity of the user-side energy storage, v i To receive the indication parameter of the leader signal, k SOC is the SOC consistency gain; func(·) is the SOC transformation function; is the control mode switching coefficient to achieve the switching between power consistency and SOC consistency control. When it is 1, the controller outputs power consistency control. When it is 0, the controller is in energy storage SOC consistency control; k pu is the power consistency gain.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the steps of a user-side energy storage distributed control method as described in any one of claims 1-6 are implemented.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and running on the processor, characterized in that: When the processor executes the program, the steps of a user-side energy storage distributed control method as described in any one of claims 1-6 are implemented.

10. A computer program product comprising software code, characterized in that The program in the software code executes the steps of a user-side energy storage distributed control method as described in any one of claims 1-6.

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