Inverter control method and inverter control device

Abstract

The present application is applicable to the field of equipment control technology, and provides an inverter control method, including: if a designated energy storage system is running in a grid-connected state, and the designated energy storage system is in a reverse flow prevention mode, then the actual reverse flow power of the grid-connected point at the first moment is obtained, and the designated energy storage system includes an inverter; based on the actual reverse flow power at the first moment, the target reverse power corresponding to the second moment is determined, and the second moment is a moment after the first moment; the inverter is controlled to work according to the target reverse power corresponding to the second moment. That is, the working condition of the inverter at the second moment can be timely and correctly adjusted based on the actual reverse power at the first moment to achieve reverse flow prevention.

Description

Technical Field

[0001] The present application belongs to the technical field of equipment control, and in particular, relates to an inverter control method and an inverter control device. Background Art

[0002] At present, when the energy storage system is running in the grid-connected state, that is, when the inverter in the energy storage system is connected to the grid, the phenomenon of electric energy reverse flow is easy to occur. The phenomenon of electric energy reverse flow here refers to the flow of electric energy from the energy storage system to the grid. How to timely and correctly control the inverter to achieve reverse flow prevention has become an urgent problem to be solved. Summary of the invention

[0003] The embodiments of the present application provide an inverter control method, device, energy storage system and computer-readable storage medium, which can solve the current problem that the inverter cannot be controlled in a timely and correct manner to achieve backflow prevention.

[0004] In a first aspect, an embodiment of the present application provides an inverter control method, comprising: if a designated energy storage system is operating in a grid-connected state and the designated energy storage system is in a backflow prevention mode, then obtaining the actual backflow power of the grid-connected point at a first moment, the designated energy storage system comprising an inverter; determining a target inverter power corresponding to a second moment based on the actual backflow power at the first moment, the second moment being a moment after the first moment; and controlling the inverter to operate according to the target inverter power corresponding to the second moment.

[0005] In a possible implementation of the first aspect, determining the target inverter power corresponding to the second moment based on the actual reverse power at the first moment includes: calculating first data, where the first data is the sum of the actual reverse power at the first moment and the target inverter power corresponding to the first moment; and determining the target inverter power corresponding to the second moment based on the first data.

[0006] In a possible implementation of the first aspect, if the actual power change is greater than or equal to a preset change threshold, the actual power change is the difference between the actual reverse power at the first moment and the actual reverse power at a third moment, and the third moment is a moment before the first moment, then determining the target inverter power corresponding to the second moment based on the first data includes: calculating the second data, the second data being the sum of the first data and a first adjustment value, the first adjustment value being compensation data corresponding to the actual power change; determining the target inverter power corresponding to the second moment based on the second data.

[0007] In a possible implementation of the first aspect, determining the target inverter power corresponding to the second moment according to the second data includes: calculating the target inverter power corresponding to the second moment according to the second data and a second adjustment value, wherein the second adjustment value is calculated based on the actual reverse current power corresponding to the third moment and a preset power value.

[0008] In a possible implementation of the first aspect, calculating the target inverter power corresponding to the second moment based on the second data and the second adjustment value includes: calculating third data, the third data being the sum of the second data and the second adjustment value, and the target inverter power corresponding to the second moment is equal to the third data.

[0009] In a possible implementation of the first aspect, if the actual power change is less than a preset change threshold, determining the target inverter power corresponding to the second moment according to the first data includes: determining the first data as the target inverter power corresponding to the second moment.

[0010] In a possible implementation of the first aspect, if the designated energy storage system is operating in a grid-connected state and the designated energy storage system is in an anti-backflow mode, before obtaining the actual backflow power of the grid-connected point at the first moment, it includes: obtaining information about the region where the designated energy storage system is located; judging whether the anti-backflow mode needs to be triggered based on the information about the region; if the judgment result is that the anti-backflow mode needs to be triggered, triggering the designated energy storage system to enter the anti-backflow mode.

[0011] In the second aspect, an embodiment of the present application provides an inverter control device, including: a power acquisition unit, used to obtain the actual reverse flow power of the grid connection point at a first moment if the designated energy storage system is operating in a grid-connected state and the designated energy storage system is in a reverse flow prevention mode, and the designated energy storage system includes an inverter; a power determination unit, used to determine the target inverter power corresponding to the second moment based on the actual reverse flow power at the first moment, the second moment being a moment after the first moment; a control unit, used to control the operation of the inverter according to the target inverter power corresponding to the second moment.

[0012] In a third aspect, an embodiment of the present application provides an energy storage system, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements any of the methods described above when executing the computer program.

[0013] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, it implements any of the methods described above.

[0014] It can be understood that the beneficial effects of the second to fourth aspects mentioned above can be found in the relevant description of the first aspect mentioned above, and will not be repeated here.

[0015] Compared with the prior art, the embodiments of the present application have the following beneficial effects: in the present application, if the designated energy storage system is running in a grid-connected state, and the designated energy storage system is in a backflow prevention mode, then the actual backflow power of the grid-connected point at the first moment is obtained, and the designated energy storage system includes an inverter; based on the actual backflow power at the first moment, the target inverter power corresponding to the second moment is determined, and the second moment is a moment after the first moment; and the inverter is controlled to work according to the target inverter power corresponding to the second moment. That is, the present application can timely and correctly adjust the working condition of the inverter at the second moment based on the actual backflow power at the first moment to achieve backflow prevention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 is a flow chart of an inverter control method provided by an embodiment of the present application;

[0018] Figure 2 is a schematic diagram of an inverter control device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0019] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present application.

[0020] It should be understood that when used in the present specification and the appended claims, the term "comprising" indicates the presence of described features, wholes, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or combinations thereof.

[0021] It should also be understood that the term “and / or” used in the specification and appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0022] As used in the specification and appended claims of this application, the term "if..." can be interpreted as "when..." or "upon..." or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrase "if it is determined" or "if [described condition or event] is detected" can be interpreted as meaning "upon determination" or "in response to determining" or "upon detection of [described condition or event]" or "in response to detecting [described condition or event]", depending on the context.

[0023] In addition, in the description of the present application specification and the appended claims, the terms "first", "second", "third", etc. are only used to distinguish the descriptions and cannot be understood as indicating or implying relative importance.

[0024] References to "one embodiment" or "some embodiments" etc. described in the specification of this application mean that one or more embodiments of the present application include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the statements "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways. Embodiment 1

[0025] Figure 1 A schematic flow chart of an inverter control method provided in an embodiment of the present application is shown. The inverter control method includes: step S101, step S102 and step S103, which are described in detail as follows:

[0026] Step S101: If the designated energy storage system is running in a grid-connected state and the designated energy storage system is in a reverse flow prevention mode, then the actual reverse flow power of the grid-connected point at the first moment is obtained, and the designated energy storage system includes an inverter.

[0027] The actual reverse flow power at the first moment is the reverse flow power of the grid connection point actually detected at the first moment.

[0028] As an example but not limitation, the designated energy storage system may be an outdoor energy storage system, the designated energy storage system may include an inverter, and the designated energy storage system can provide electrical energy. The designated energy storage system operating in a grid-connected state means that the designated energy storage system is connected to the grid. The anti-backflow mode is a mode that prevents electrical energy from flowing from the designated energy storage system to the grid (the anti-backflow mode aims to prevent electrical energy from flowing from the designated energy storage system to the grid).

[0029] In some embodiments, the designated energy storage system can also operate in an off-grid state. The designated energy storage system in the off-grid state can provide power to a load (such as a household load).

[0030] Optionally, before step S101, it includes: obtaining information about the region where the designated energy storage system is located; judging whether the anti-backflow mode needs to be triggered according to the information about the region; if the judgment result is that the anti-backflow mode needs to be triggered, triggering the designated energy storage system to enter the anti-backflow mode.

[0031] As an example but not limitation, the region information may include at least one of the following: a name of a region, a code of a region, and the region includes a country.

[0032] In some embodiments, judging whether to trigger the anti-backflow mode based on the information of the region includes: if the name of the region is in a designated list, determining that the anti-backflow mode needs to be triggered, and the designated list records the names of all / part of the regions that need anti-backflow.

[0033] Step S102: determining a target inverter power corresponding to a second moment based on the actual reverse power at the first moment, where the second moment is a moment after the first moment.

[0034] The target inverter power corresponding to the second moment refers to a target (expected) value of the inverter power of the inverter at the second moment.

[0035] For example, the first moment is the current moment, the second moment is the next moment of the current moment, and the time interval between the second moment and the first moment is equal to a preset duration.

[0036] Optionally, step S102 includes: if the actual reverse power at the first moment is a negative value, determining the target inverter power corresponding to the second moment based on the actual reverse power at the first moment. That is, if it is detected that the actual reverse power at the first moment is a negative value, it means that the electric energy reverse flow phenomenon occurs. The embodiment of the present application can timely adjust the target inverter power corresponding to the second moment, so that the actual reverse power at subsequent moments returns to a reasonable range.

[0037] Optionally, the step S102 includes: calculating first data, where the first data is the sum of the actual reverse power at the first moment and the target inverter power corresponding to the first moment; and determining the target inverter power corresponding to the second moment according to the first data.

[0038] For ease of description, the actual reverse power at the first moment, the target inverter power corresponding to the first moment, and the first data can be respectively expressed as Pgrid(n), Pinv_ref(n), and Pinv_ref(n+1). Pgrid(n), Pinv_ref(n), and Pinv_ref(n+1) satisfy the following relationship: Pinv_ref(n+1)= Pinv_ref(n)+Pgrid(n).

[0039] In some embodiments, if the actual power change is less than the preset change threshold, determining the target inverter power corresponding to the second moment according to the first data includes: determining the first data as the target inverter power corresponding to the second moment. That is, the target inverter power corresponding to the second moment is equal to Pinv_ref (n+1).

[0040] The actual power change is the difference between the actual reverse power at the first moment and the actual reverse power at a third moment, and the third moment is a moment before the first moment. The time interval between the third moment and the first moment is equal to a preset duration. The actual power change may be caused by a reverse power jump amount.

[0041] In some embodiments, if the actual power change is greater than or equal to a preset change threshold, determining the target inverter power corresponding to the second moment based on the first data includes: calculating second data, the second data being the sum of the first data and a first adjustment value, the first adjustment value being compensation data corresponding to the actual power change; determining the target inverter power corresponding to the second moment based on the second data.

[0042] As an example but not limitation, the calculation of the second data includes: determining the compensation data corresponding to the actual power change based on a designated data table, that is, determining a first adjustment value based on a designated data table, and calculating the second data according to the first adjustment value and the first data, the designated data table recording compensation data corresponding to multiple changes (the correspondence between multiple changes and multiple compensation data), the compensation data is negative data, for example, the compensation data is a negative power value, and the first adjustment value is used to negatively adjust the target inverter power corresponding to the second moment, thereby reducing the probability of subsequent reverse current.

[0043] Optionally, determining the target inverter power corresponding to the second moment according to the second data includes: determining the second data as the target inverter power corresponding to the second moment, that is, the target inverter power corresponding to the second moment is equal to the second data.

[0044] Optionally, determining the target inverter power corresponding to the second moment according to the second data includes: calculating the target inverter power corresponding to the second moment according to the second data and a second adjustment value, wherein the second adjustment value is calculated based on the actual reverse flow power corresponding to the third moment and a preset power value. In this way, secondary adjustment is achieved, so that reverse flow prevention can be achieved more accurately.

[0045] In some embodiments, before calculating the target inverter power corresponding to the second moment according to the second data and the second adjustment value, the method includes: acquiring the second adjustment value.

[0046] As an example but not limitation, the obtaining of the second adjustment value includes: calculating an average value corresponding to historical data, the historical data including the actual reverse flow power corresponding to the third moment and the actual reverse flow power corresponding to Q moments before the third moment, Q being a positive integer greater than or equal to 1, calculating the difference between the average value corresponding to the historical data and a preset power value, and determining the difference between the average value corresponding to the historical data and the preset power value as the second adjustment value. The difference between the average value corresponding to the historical data and the preset power value may be the difference obtained by subtracting the preset power value from the average value corresponding to the historical data. The historical data may be filtered historical data.

[0047] Optionally, calculating the target inverter power corresponding to the second moment based on the second data and the second adjustment value includes: calculating third data, the third data being the sum of the second data and the second adjustment value, and the target inverter power corresponding to the second moment is equal to the third data.

[0048] Step S103: Control the inverter to operate according to the target inverter power corresponding to the second moment.

[0049] As an example but not limitation, the current value corresponding to the second moment is calculated based on the specified voltage value and the target inverter power corresponding to the second moment, and the inverter is controlled to operate according to the current value.

[0050] In this application, if the designated energy storage system is running in a grid-connected state, and the designated energy storage system is in a backflow prevention mode, then the actual backflow power of the grid-connected point at the first moment is obtained, and the designated energy storage system includes an inverter; based on the actual backflow power at the first moment, the target inverter power corresponding to the second moment is determined, and the second moment is a moment after the first moment; and the inverter is controlled to work according to the target inverter power corresponding to the second moment. That is, the present application can timely and correctly adjust the working condition of the inverter at the second moment based on the actual backflow power at the first moment to achieve backflow prevention.

[0051] It should be understood that the size of the serial numbers of the steps in the above embodiments does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application. Embodiment 2

[0052] Corresponding to the inverter control method described in the above embodiment, Figure 2 A schematic diagram of an inverter control device provided in an embodiment of the present application is shown. For ease of explanation, only the parts related to the embodiment of the present application are shown.

[0053] The inverter control device includes: a power acquisition unit 201 , a power determination unit 202 and a control unit 203 .

[0054] The power acquisition unit 201 is used to acquire the actual reverse flow power of the grid connection point at the first moment if the designated energy storage system is running in the grid connection state and the designated energy storage system is in the reverse flow prevention mode, and the designated energy storage system includes an inverter.

[0055] Optionally, the inverter control device further includes: a judgment unit.

[0056] The judging unit is used for: obtaining information of the region where the designated energy storage system is located before the power acquisition unit 201 executes the actual reverse flow power of the grid connection point at the first moment if the designated energy storage system is running in the grid-connected state and the designated energy storage system is in the backflow prevention mode; judging whether the backflow prevention mode needs to be triggered according to the information of the region; and triggering the designated energy storage system to enter the backflow prevention mode if the judgment result is that the backflow prevention mode needs to be triggered.

[0057] The power determination unit 202 is used to determine the target inverter power corresponding to the second moment based on the actual reverse power at the first moment, where the second moment is a moment after the first moment.

[0058] Optionally, the power determination unit 202 is specifically used to: calculate first data, which is the sum of the actual reverse power at the first moment and the target inverter power corresponding to the first moment; and determine the target inverter power corresponding to the second moment based on the first data.

[0059] In some embodiments, if the actual power change is greater than or equal to a preset change threshold, the actual power change is the difference between the actual reverse power at the first moment and the actual reverse power at the third moment, and the third moment is a moment before the first moment, then the power determination unit 202, when executing the determination of the target inverter power corresponding to the second moment according to the first data, is specifically used to: calculate the second data, the second data being the sum of the first data and the first adjustment value, the first adjustment value being the compensation data corresponding to the actual power change; determine the target inverter power corresponding to the second moment according to the second data.

[0060] In some embodiments, when the power determination unit 202 executes the determination of the target inverter power corresponding to the second moment according to the second data, it is specifically used to: calculate the target inverter power corresponding to the second moment according to the second data and the second adjustment value, and the second adjustment value is calculated based on the actual reverse current power corresponding to the third moment and the preset power value.

[0061] Optionally, the inverter control device further includes: a value acquisition unit.

[0062] The value acquisition unit is used to: acquire the second adjustment value before the power determination unit 202 calculates the target inverter power corresponding to the second moment according to the second data and the second adjustment value.

[0063] The control unit 203 is used to control the operation of the inverter according to the target inverter power corresponding to the second moment.

[0064] It should be noted that for technical details that are not described in detail in this embodiment, reference can be made to the inverter control methods provided in the various embodiments in the above-mentioned embodiment 1. Embodiment 3

[0065] The energy storage system 3 in this embodiment includes: at least one processor 31, a memory 32, and a computer program 33 stored in the memory 32 and executable on the at least one processor 31, and the processor 31 implements the steps in any of the above inverter control method embodiments when executing the computer program 33. The energy storage system may be equivalent to the designated energy storage system in the above embodiment 1, and the energy storage system further includes an inverter.

[0066] When the processor 31 executes the computer program 33, the steps in the above inverter control method embodiments are implemented, for example: Figure 1 Alternatively, when the processor 31 executes the computer program 33, the functions of each unit in the above-mentioned device embodiments are realized, for example, Figure 2The functions of the units 201 to 203 are shown.

[0067] Those skilled in the art will appreciate that this embodiment is merely an example of the energy storage system 3 and does not constitute a limitation on the energy storage system 3. The energy storage system 3 may include more or fewer components than shown in the figure, or a combination of certain components, or different components, for example, may also include input and output devices, network access devices, etc.

[0068] The processor 31 may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor, etc.

[0069] In some embodiments, the memory 32 may be an internal storage unit of the energy storage system 3, such as a hard disk or memory of the energy storage system 3. In other embodiments, the memory 32 may also be an external storage device of the energy storage system 3, such as a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, etc. equipped on the energy storage system 3. Further, the memory 32 may also include both an internal storage unit and an external storage device of the energy storage system 3. The memory 32 is used to store an operating system, an application program, a boot loader (BootLoader), data, and other programs, such as the program code of the computer program 33. The memory 32 may also be used to temporarily store data that has been output or is to be output.

[0070] It should be noted that the information interaction, execution process, etc. between the above-mentioned devices / units are based on the same concept as the method embodiment of the present application. Their specific functions and technical effects can be found in the method embodiment part and will not be repeated here.

[0071] The technicians in the relevant field can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example for illustration. In practical applications, the above-mentioned function allocation can be completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiment can be integrated in a processing unit, or each unit can exist physically separately, or two or more units can be integrated in one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of this application. The specific working process of the units and modules in the above-mentioned system can refer to the corresponding process in the aforementioned method embodiment, which will not be repeated here.

[0072] The embodiment of the present application further provides a computer-readable storage medium, which stores a computer program 33. When the computer program 33 is executed by the processor 31, the steps in the above-mentioned method embodiments can be implemented.

[0073] The embodiment of the present application provides a computer program 33 product. When the computer program 33 product runs on the energy storage system 3, the energy storage system 3 can implement the steps in the above-mentioned method embodiments when executing.

[0074] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present application implements all or part of the processes in the above-mentioned embodiment method, which can be completed by instructing the relevant hardware through a computer program 33. The computer program 33 can be stored in a computer-readable storage medium. When the computer program 33 is executed by the processor 31, the steps of the above-mentioned method embodiments can be implemented. Among them, the computer program 33 includes a computer program 33 code, and the computer program 33 code can be in source code form, object code form, executable file or some intermediate form. The computer-readable medium can at least include: any entity or device that can carry the computer program 33 code to the energy storage system 3, a recording medium, a computer memory 32, a read-only memory 32 (ROM, Read-Only Memory), a random access memory 32 (RAM, Random Access Memory), an electric carrier signal, a telecommunication signal, and a software distribution medium. For example, a USB flash drive, a mobile hard disk, a magnetic disk or an optical disk. In some jurisdictions, according to legislation and patent practice, computer-readable media cannot be electric carrier signals and telecommunication signals.

[0075] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0076] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0077] In the embodiments provided in the present application, it should be understood that the disclosed devices / network equipment and methods can be implemented in other ways. For example, the device / network equipment embodiments described above are merely schematic. For example, the division of the modules or units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0078] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0079] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. An inverter control method, characterized in that: include: If the designated energy storage system is running in a grid-connected state and the designated energy storage system is in a reverse flow prevention mode, then obtaining the actual reverse flow power of the grid-connected point at the first moment, wherein the designated energy storage system includes an inverter; Determine the target inverter power corresponding to the second moment based on the actual reverse power at the first moment, the second moment is a moment after the first moment, and determine the target inverter power corresponding to the second moment based on the actual reverse power at the first moment, including: calculating first data, the first data is the sum of the actual reverse power at the first moment and the target inverter power corresponding to the first moment, and determining the target inverter power corresponding to the second moment according to the first data; if the actual power change is greater than or equal to a preset change threshold, the actual power change is the difference between the actual reverse power at the first moment and the actual reverse power at a third moment, and the third moment is a moment before the first moment, then determine the target inverter power corresponding to the second moment according to the first data, including: calculating second data, the second data is the sum of the first data and a first adjustment value, the first adjustment value is compensation data corresponding to the actual power change, and determine the target inverter power corresponding to the second moment according to the second data; The inverter is controlled to operate according to the target inverter power corresponding to the second moment.

2. The inverter control method according to claim 1, characterized in that: The determining the target inverter power corresponding to the second moment according to the second data includes: The target inverter power corresponding to the second moment is calculated according to the second data and the second adjustment value, wherein the second adjustment value is calculated based on the actual reverse power corresponding to the third moment and the preset power value.

3. The inverter control method according to claim 2, characterized in that: The calculating the target inverter power corresponding to the second moment according to the second data and the second adjustment value comprises: Calculate third data, where the third data is the sum of the second data and the second adjustment value, and the target inverter power corresponding to the second moment is equal to the third data.

4. The inverter control method according to claim 1, characterized in that: If the actual power change is less than the preset change threshold, determining the target inverter power corresponding to the second moment according to the first data includes: The first data is determined as the target inverter power corresponding to the second moment.

5. The inverter control method according to claim 1, characterized in that: If the designated energy storage system is running in the grid-connected state and the designated energy storage system is in the anti-backflow mode, before obtaining the actual backflow power of the grid-connected point at the first moment, the method includes: Get information about the region where the specified energy storage system is located; Determine whether to trigger the anti-backflow mode according to the information of the area; If the judgment result is that the anti-backflow mode needs to be triggered, the designated energy storage system is triggered to enter the anti-backflow mode.

6. An inverter control device, characterized in that: include: A power acquisition unit, configured to acquire the actual reverse flow power of the grid connection point at a first moment if the designated energy storage system is operating in a grid-connected state and the designated energy storage system is in a reverse flow prevention mode, wherein the designated energy storage system includes an inverter; A power determination unit, configured to determine a target inverter power corresponding to a second moment based on an actual reverse power at a first moment, wherein the second moment is a moment after the first moment, and the determining of the target inverter power corresponding to the second moment based on the actual reverse power at the first moment includes: calculating first data, wherein the first data is a sum obtained by adding the actual reverse power at the first moment and the target inverter power corresponding to the first moment, and determining the target inverter power corresponding to the second moment according to the first data; if an actual power variation is greater than or equal to a preset variation threshold, wherein the actual power variation is a difference between the actual reverse power at the first moment and the actual reverse power at a third moment, and the third moment is a moment before the first moment, then determining the target inverter power corresponding to the second moment according to the first data includes: calculating second data, wherein the second data is a sum obtained by adding the first data and a first adjustment value, wherein the first adjustment value is compensation data corresponding to the actual power variation, and determining the target inverter power corresponding to the second moment according to the second data; A control unit is used to control the operation of the inverter according to the target inverter power corresponding to the second moment.

7. An energy storage system, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the method according to any one of claims 1 to 5 is implemented.

8. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the method according to any one of claims 1 to 5 is implemented.

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