Power control method and computing equipment for virtualized clone inverters in photovoltaic and energy storage systems

Abstract

This invention relates to a power control method and computing device for virtualized split inverters in a photovoltaic-storage system. The photovoltaic-storage system includes a multiphase inverter, with each phase of the inverter independently controlled. The photovoltaic-storage system is virtualized into two or more virtual photovoltaic-storage systems, each with its own independently set operating mode. Each virtual photovoltaic-storage system includes a virtual inverter, and the power capacity of each phase of the virtual inverter in each virtual photovoltaic-storage system is dynamically allocated. The sum of the power capacities of each phase of the virtual inverter in each virtual photovoltaic-storage system does not exceed the power capacity of the corresponding phase in the photovoltaic-storage system. This application dynamically allocates the power capacity of each phase of the virtual inverter in the virtual photovoltaic-storage system, better meeting the needs of unbalanced output of each phase, thereby improving the utilization rate of the photovoltaic-storage system's power capacity, avoiding unnecessary power purchases from the grid, and reducing operating costs.

Description

Technical Field

[0001] This invention relates to the field of power control technology for photovoltaic energy storage systems, and specifically to a virtualized clone power control method and computing device for photovoltaic energy storage systems. Background Technology

[0002] Energy storage virtualization and sharding technology involves virtually dividing a single photovoltaic (PV) and energy storage system (ESS) into multiple virtual PV and ESS systems. Each virtual ESS system can operate in different modes according to predefined settings. For example, a single PV and ESS system can be virtualized into two virtual systems, ESS system 1 and ESS system 2. Their operating modes can be independently configured, such as maximum self-consumption, TOU (Total Energy Usage), and virtual power plant dispatch. When a single PV and ESS system is virtualized into multiple virtual systems, the sum of the power capabilities of the same component in each virtual system does not exceed the power capability of the corresponding component in the original PV and ESS system. Similarly, for the inverters in a PV and ESS system, when the PV and ESS system is virtualized into multiple parts, the corresponding inverters will also be virtualized into multiple virtual inverters. For example, if the inverter is a three-phase inverter, it will also be virtualized into multiple virtual three-phase inverters.

[0003] Taking a three-phase inverter virtually divided into two three-phase inverters as an example, where each phase of the inverter is independently controlled, the discussion focuses on a scenario where the inverter is a three-phase inverter with independent three-phase control:

[0004] A. Assume the maximum output power of the original inverter is The inverters are virtualized into photovoltaic-storage inverter 1 and photovoltaic-storage inverter 2, and the maximum output power of the two photovoltaic-storage inverters is allocated to respectively. and Typically, the inverter capacity is evenly distributed across each phase; therefore, the maximum output power of each phase of the two photovoltaic-storage inverters is respectively... and ;

[0005] B. The power command of each phase of the photovoltaic-storage inverter 2 is relatively small (e.g., 0). Under the setting of fixed power allocation for each phase, the photovoltaic-storage inverter 1 is limited to a maximum output of 4kW per phase. When the output power command of a certain phase of the photovoltaic-storage inverter 1 exceeds the maximum power command of each phase, it will not be able to output according to the command. For example, if the load of phase C of the photovoltaic-storage inverter 1 is 5kW and phases A and B are unloaded, since the maximum power of each phase of the photovoltaic-storage inverter 1 is 4kW, phase C of the photovoltaic-storage inverter 1 can only provide 4kW output to the load, and 1kW of electricity needs to be purchased from the grid.

[0006] C. In fact, since the power command of the photovoltaic-storage inverter 2 is 0, the maximum output power capacity of each phase of the original inverter is 9kW. The system is fully capable of providing 5kW output to the load. However, with the fixed power allocation of each phase, the system capacity cannot be fully utilized, resulting in the need to purchase electricity from the grid.

[0007] Therefore, from the above phenomenon, in the case of fixed allocation of power capacity of each phase of the inverter, the system capacity may be sufficient but unable to fully power the load, which undoubtedly causes waste of the rich power capacity of the optical storage system and cannot be fully utilized. SUMMARY

[0008] A main object of the present application is to overcome at least one of the above-mentioned defects, and to provide a virtualized multiple inverter power control method for an optical storage system, a computing device, which can reliably respond to the power of each virtual optical storage system and fully utilize the power capacity of the optical storage system by dynamically allocating the power capacity of each phase of each virtual inverter in the case of a multi-phase inverter and independent control of each phase of the inverter.

[0009] To achieve the above object, the technical solution adopted by the present application is:

[0010] The present application provides a virtualized multiple inverter power control method for an optical storage system, the optical storage system comprising an inverter, the inverter being a multi-phase inverter, and each phase of the inverter being independently controlled, the optical storage system being virtually divided into two or more virtual optical storage systems, each virtual optical storage system being independently set to a working mode, wherein:

[0011] Each virtual inverter is included in each virtual optical storage system, the power capacity of each phase of the virtual inverter in each virtual optical storage system is dynamically allocated, and the sum of the power capacity of each phase of the virtual inverter in each virtual optical storage system is not greater than the power capacity of the corresponding phase in the optical storage system.

[0012] According to one embodiment of the present application, when the power capacity of each phase of the virtual inverter in each virtual optical storage system is dynamically allocated, the sum of the power capacity of each phase of at least one virtual inverter is a set value.

[0013] According to one embodiment of the present application, the process of dynamically allocating the power capacity of each phase of the virtual inverter in each virtual optical storage system is allocated according to the following formula, the power capacity of the first phase of the virtual inverter in the first virtual optical storage system is allocated as:

[0014] wherein, is the power capacity of the first phase of the inverter in the optical storage system, is the scheduling instruction of the first phase of the virtual inverter in the first virtual optical storage system, is the number of virtual optical storage systems into which the optical storage system is divided.

[0015] ​​​​​​According to one embodiment of the present invention, when the first The virtual inverter in the virtual photovoltaic energy storage system is the first When the phase scheduling command is for output power, such as the first... The virtual inverter in the virtual photovoltaic energy storage system is the first The phase dispatch command is the input power, then in the calculation of the first phase... The virtual inverter in the virtual photovoltaic energy storage system is the first Phase power capability Time definition =0;

[0016] Conversely, when the first... The virtual inverter in the virtual photovoltaic energy storage system is the first When the phase dispatch command is the input power, such as the first phase... The virtual inverter in the virtual photovoltaic energy storage system is the first If the phase scheduling command is output power, then in the calculation of the allocation of the first phase... The virtual inverter in the virtual photovoltaic energy storage system is the first Phase power capability Time definition It is 0.

[0017] According to one embodiment of the present invention, priority is set for each phase of each virtual inverter in each virtual photovoltaic energy storage system, and the phases are prioritized based on the priority. The virtual inverter in the virtual photovoltaic energy storage system is the first Phase power capability Perform calculations and allocation.

[0018] According to one embodiment of the present invention, a virtual partition is pre-set. The power priority levels of each virtual inverter in the virtual photovoltaic-storage system are determined by the principle of power capacity allocation in the photovoltaic-storage system, which is based on priority. The virtual inverter in the higher-priority virtual photovoltaic-storage system is responded to first. The scheduling command for the phase, when the photovoltaic-storage system has surplus power capacity, will then respond to the virtual inverter in the lower priority virtual photovoltaic-storage system. The phase scheduling instructions.

[0019] According to one embodiment of the present invention, for the virtual inverter in each virtual optical storage system... An upper limit threshold is set for the power capability of the first phase. The virtual inverter in the virtual photovoltaic energy storage system is the first Phase power capability When performing calculations and allocations, the corresponding preset upper limit threshold must not be exceeded.

[0020] According to one of the embodiments of the present application, the power capability is the maximum output power of the inverter or the maximum absorption power of the inverter.

[0021] In particular, the present application also provides a computing device comprising a memory, a processor and a computer program stored in the memory and executable by the processor, wherein the processor implements the method as described above when executing the computer program.

[0022] The present application also provides a computer readable storage medium having stored therein a computer program which, when executed by a processor, implements the method as described above. The computer readable storage medium is preferably a non-volatile readable storage medium.

[0023] Compared with the prior art, the photovoltaic storage system virtualization and inverter power control method of the present application has the following advantages and beneficial effects:

[0024] The photovoltaic storage system virtualization and inverter power control method of the present application is aimed at controlling the power of the inverter of a photovoltaic storage system comprising a multi-phase inverter. Each phase of the inverter can be independently controlled. The power capability of each phase of the virtual inverter of the virtually divided virtual photovoltaic storage system is dynamically allocated, better meeting the demand of unbalanced output of each phase, thereby improving the utilization rate of the power capability of the photovoltaic storage system, avoiding unnecessary power purchase from the power grid and reducing the working cost. BRIEF DESCRIPTION OF DRAWINGS

[0025] Some specific embodiments of the present application will be described in detail hereinafter with reference to the accompanying drawings, which are presented by way of illustration and not of limitation. The same reference numbers in the drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that the drawings are not necessarily drawn to scale. In the drawings:

[0026] Figure 1 is a division schematic diagram of the virtualization and control of the photovoltaic storage system according to one embodiment of the present application;

[0027] Figure 2 is a division schematic diagram of the virtualization and control of the inverter in the photovoltaic storage system according to one embodiment of the present application;

[0028] Figure 3 is a structure diagram of a computing device according to another embodiment of the present application;

[0029] Figure 4 is a structure diagram of a computer readable storage medium according to another embodiment of the present application. DETAILED DESCRIPTION

[0030] The technical solutions of the present application will be described clearly and completely below with reference to the drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0031] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0032] The present embodiment describes a method for power control of virtualized split inverter of optical storage system. The optical storage system includes an inverter, the inverter is a multi-phase inverter, and each phase of the inverter is independently controlled, as shown in Figure 1 The optical storage system is virtually divided into two or more virtual optical storage systems, and each virtual optical storage system independently sets a working mode, wherein:

[0033] As shown in Figure 2 Each virtual inverter in each virtual optical storage system can perform dynamic allocation according to the change of the scheduling instruction, and the sum of the power capacity of each phase of the virtual inverter in each virtual optical storage system is not greater than the power capacity of the corresponding phase in the optical storage system.

[0034] The components in the optical storage system include at least one of photovoltaic module string, inverter and energy storage battery, and correspondingly, the components of each virtual optical storage system include at least one of the components in the optical storage system (in order to better express the control process, the components of each virtual optical storage system are designed to be the same as the components in the optical storage system, that is, each virtual optical storage system includes a virtual photovoltaic module string, a virtual inverter and a virtual energy storage battery). The power capacity refers to the maximum output power of the inverter or the maximum absorption power of the inverter.

[0035] Under the premise of meeting , the size of can be dynamically adjusted, that is, under the premise of the above-mentioned "the sum of the power capacity of each phase of the virtual inverter in each virtual optical storage system is not greater than the power capacity of the corresponding phase in the optical storage system", the dynamic allocation of the power capacity of each phase of the virtual inverter in each virtual optical storage system is performed. Among them, represents the phase of the inverter, such as A, B, C... representing the A phase, B phase, C phase, etc. of the inverter; represents the number of virtual optical storage systems divided by the optical storage system, which is an integer greater than or equal to 2; that is, represents the phase of the Phase power capability, For the original photovoltaic storage system, the first phase Power ability.

[0036] Based on the overall process of dynamically allocating the power capacity of each phase of the virtual inverter in each virtual photovoltaic-storage system, the allocation is performed according to the following formula: The virtual inverter in the virtual photovoltaic energy storage system is the first Phase power capability ,

[0037] in, For the inverter in the photovoltaic-storage system Phase power capability, For the first The virtual inverter in the virtual photovoltaic energy storage system is the first Phase scheduling instructions, The number of virtual optical-storage systems into which the optical-storage system is divided.

[0038] Case 1:

[0039] For example, let's say... The inverter used is a three-phase inverter, consisting of phases A, B, and C. In this example, the original photovoltaic-storage system is virtually divided into two virtual photovoltaic-storage systems. The discussion also focuses on the maximum output power of phase A of the inverter. Assume the output power capability of phase A of the original photovoltaic-storage system's inverter is... The scheduling commands for phase A of both the virtual inverter in virtual photovoltaic energy storage system 1 and the virtual inverter in virtual photovoltaic energy storage system 2 are power output, and the power scheduling commands are respectively... and The A-phase power capabilities allocated to the virtual inverters of virtual photovoltaic-storage system 1 and virtual photovoltaic-storage system 2 are respectively... , This method can also solve the problem discussed in the background that the load power cannot be covered, requiring the purchase of electricity from the grid.

[0040] It is important to note that when adjusting the power capabilities of the components of each virtual optical energy storage system, if the output power of one virtual optical energy storage system is adjusted, then the input power of another virtual optical energy storage system will be adjusted, and this situation needs to be specially defined. Similarly, if the input power of one virtual optical energy storage system is adjusted, then the output power of another virtual optical energy storage system will be adjusted, and this situation also needs to be specially defined.

[0041] Specifically, when the first The virtual inverter in the virtual photovoltaic energy storage system is the first The scheduling instruction of the phase of the virtual inverter in the first virtual optical storage system is output power, and the scheduling instruction of the phase of the virtual inverter in the second virtual optical storage system is input power. The scheduling instruction of the phase of the virtual inverter in the first virtual optical storage system is output power, and the scheduling instruction of the phase of the virtual inverter in the second virtual optical storage system is input power. The scheduling instruction of the phase of the virtual inverter in the first virtual optical storage system is output power, and the scheduling instruction of the phase of the virtual inverter in the second virtual optical storage system is input power. The scheduling instruction of the phase of the virtual inverter in the first virtual optical storage system is output power, and the scheduling instruction of the phase of the virtual inverter in the second virtual optical storage system is input power. The scheduling instruction of the phase of the virtual inverter in the first virtual optical storage system is output power, and the scheduling instruction of the phase of the virtual inverter in the second virtual optical storage system is input power. The scheduling instruction of the phase of the virtual inverter in the first virtual optical storage system is output power, and the scheduling instruction of the phase of the virtual inverter in the second virtual optical storage system is input power. The scheduling instruction of the phase of the virtual inverter in the first virtual optical storage system is output power, and the scheduling instruction of the phase of the virtual inverter in the second virtual optical storage system is input power. The scheduling instruction of the phase of the virtual inverter in the first virtual optical storage system is output power, and the scheduling instruction of the phase of the virtual inverter in the second virtual optical storage system is input power.

[0042] The scheduling instruction of the phase of the virtual inverter in the first virtual optical storage system is output power, and the scheduling instruction of the phase of the virtual inverter in the second virtual optical storage system is input power. The scheduling instruction of the phase of the virtual inverter in the first virtual optical storage system is output power, and the scheduling instruction of the phase of the virtual inverter in the second virtual optical storage system is input power. The scheduling instruction of the phase of the virtual inverter in the first virtual optical storage system is output power, and the scheduling instruction of the phase of the virtual inverter in the second virtual optical storage system is input power. The scheduling instruction of the phase of the virtual inverter in the first virtual optical storage system is output power, and the scheduling instruction of the phase of the virtual inverter in the second virtual optical storage system is input power. The scheduling instruction of the phase of the virtual inverter in the first virtual optical storage system is output power, and the scheduling instruction of the phase of the virtual inverter in the second virtual optical storage system is input power. The scheduling instruction of the phase of the virtual inverter in the first virtual optical storage system is output power, and the scheduling instruction of the phase of the virtual inverter in the second virtual optical storage system is input power. The scheduling instruction of the phase of the virtual inverter in the first virtual optical storage system is output power, and the scheduling instruction of the phase of the virtual inverter in the second virtual optical storage system is input power. The scheduling instruction of the phase of the virtual inverter in the first virtual optical storage system is output power, and the scheduling instruction of the phase of the virtual inverter in the second virtual optical storage system is input power. The scheduling instruction of the phase of the virtual inverter in the first virtual optical storage system is output power, and the scheduling instruction of the phase of the virtual inverter in the second virtual optical storage system is input power. The scheduling instruction of the phase of the virtual inverter in the first virtual optical storage system is output power, and the scheduling instruction of the phase of the virtual inverter in the second virtual optical storage system is input power.

[0043] The scheduling instruction of the phase of the virtual inverter in the first virtual optical storage system is output power, and the scheduling instruction of the phase of the virtual inverter in the second virtual optical storage system is input power. The scheduling instruction of the phase of the virtual inverter in the first virtual optical storage system is output power, and the scheduling instruction of the phase of the virtual inverter in the second virtual optical storage system is input power. The scheduling instruction of the phase of the virtual inverter in the first virtual optical storage system is output power, and the scheduling instruction of the phase of the virtual inverter in the second virtual optical storage system is input power. The scheduling instruction of the phase of the virtual inverter in the first virtual optical storage system is output power, and the scheduling instruction of the phase of the virtual inverter in the second virtual optical storage system is input power. The scheduling instruction of the phase of the virtual inverter in the first virtual optical storage system is output power, and the scheduling instruction of the phase of the virtual inverter in the second virtual optical storage system is input power.

[0044] The scheduling instruction of the phase of the virtual inverter in the first virtual optical storage system is output power, and the scheduling instruction of the phase of the virtual inverter in the second virtual optical storage system is input power. The scheduling instruction of the phase of the virtual inverter in the first virtual optical storage system is output power, and the scheduling instruction of the phase of the virtual inverter in the second virtual optical storage system is input power. The scheduling instruction of the phase of the virtual inverter in the first virtual optical storage system is output power, and the scheduling instruction of the phase of the virtual inverter in the second virtual optical storage system is input power. The scheduling instruction of the phase of the virtual inverter in the first virtual optical storage system is output power, and the scheduling instruction of the phase of the virtual inverter in the second virtual optical storage system is input power. The scheduling instruction of the phase of the virtual inverter in the first virtual optical storage system is output power, and the scheduling instruction of the phase of the virtual inverter in the second virtual optical storage system is input power.

[0045] Case 2:

[0046] On the basis of case 1, the priority of the virtual inverter of the virtual optical storage system 1 is set to be higher than that of the virtual inverter of the virtual optical storage system 2, and the response priority of the power capacity of each phase of the virtual inverter of the virtual optical storage system 1 is also higher than that of the virtual inverter of the virtual optical storage system 2. The following will be described in different scenes in combination with different scheduling instructions of the phase output power of the inverter A.

[0047] Scenario 1, assuming the output power capability of the original PV-ES system’s virtual inverter A phase is , the A phase power command of the virtual inverter of the virtual PV-ES system 1 and the virtual inverter of the virtual PV-ES system 2 are and respectively. Due to the priority setting, the high priority, i.e. the power scheduling command of the virtual inverter A phase of the virtual PV-ES system 1, is satisfied first to achieve 1kw output, and then the virtual inverter A phase of the virtual PV-ES system 1 is allocated 1kw output capability; after the output satisfies the 1kw power command of the virtual inverter A phase of the virtual PV-ES system 1, the remaining power capability of 8kw is used to allocate to the virtual inverter A phase of the virtual PV-ES system 2 with low priority, at this time the power scheduling command of the virtual inverter A phase of the virtual PV-ES system 2 is 2kw, which is less than the remaining power capability of 8kw, so 2kw power capability can be allocated to the virtual inverter A phase of the virtual PV-ES system 2 for power output.

[0048] Scenario 2, assuming the output power capability of the original PV-ES system’s inverter A phase is , the A phase power command of the virtual inverter of the virtual PV-ES system 1 and the virtual inverter of the virtual PV-ES system 2 are and respectively. Due to the priority setting, the high priority, i.e. the power scheduling command of the virtual inverter of the virtual PV-ES system 1, is satisfied first to achieve 8kw output, and then the virtual inverter A phase of the virtual PV-ES system 1 is allocated 8kw output capability; after the output satisfies the 8kw power scheduling command of the virtual inverter A phase of the virtual PV-ES system 1, the remaining power capability of 1kw is used to allocate to the virtual inverter A phase of the virtual PV-ES system 2 with low priority, at this time the power scheduling command of the virtual inverter A phase of the virtual PV-ES system 2 is 2kw, which is greater than the remaining power capability of 1kw, so only 1kw power capability can be allocated to the virtual inverter A phase of the virtual PV-ES system 2 for power output, and the virtual inverter A phase of the virtual PV-ES system 2 can only output 1kw power.

[0049] Scenario 3, assuming the output power capability of the original PV-ES system’s inverter A phase is , the A phase power command of the virtual inverter of the virtual PV-ES system 1 and the virtual inverter of the virtual PV-ES system 2 are and Due to the priority settings, the power dispatch command of the high-priority virtual inverter phase A of virtual photovoltaic energy storage system 1 is prioritized to achieve a 9kW output. Therefore, 9kW output capacity is allocated to virtual inverter phase A of virtual photovoltaic energy storage system 1. After the output satisfies the 9kW power dispatch command of virtual inverter phase A of virtual photovoltaic energy storage system 1, there is no remaining power capacity to allocate to virtual inverter phase A of virtual photovoltaic energy storage system 2, which has a lower priority. At this time, the power dispatch command of virtual inverter phase A of virtual photovoltaic energy storage system 2 is 2kW, which is greater than the remaining capacity of 0kW. Therefore, power capacity cannot be allocated to virtual inverter phase A of virtual photovoltaic energy storage system 2 for power output, and virtual inverter of virtual photovoltaic energy storage system 2 has no power output.

[0050] To avoid situations where the power of virtual inverters in some virtual photovoltaic (PV) and energy storage (ESS) systems is completely or excessively limited under proportional or priority-based allocation, a power limit is imposed on higher-priority PV and ESS systems, or on each individual PV and ESS system, to ensure that the input and output of the virtual inverters in each PV and ESS system are generally satisfied. Specifically, the power limit for the virtual inverter in each PV and ESS system is set at the [specific level]. An upper limit threshold is set for the power capability of the first phase. The virtual inverter in the virtual photovoltaic energy storage system is the first Phase power capability When performing calculations and allocations, the corresponding preset upper limit threshold must not be exceeded.

[0051] As in Case 2-Scenario 3 above, the output power of the virtual inverters in each virtual photovoltaic-storage system can be limited. For example, the maximum output power of phase A of the virtual inverter in virtual photovoltaic-storage system 1 can be set to... In Case 2-Scenario 3, the virtual inverter A-phase output of virtual photovoltaic storage system 1... Reserved The output of phase A of the virtual inverter in virtual photovoltaic energy storage system 2 (such as reserved for virtual power plant dispatch) can ensure that even when the power dispatch command of the virtual inverter of the high-priority virtual photovoltaic energy storage system is large, the virtual inverter of the low-priority virtual photovoltaic energy storage system can still have a certain output capability.

[0052] In addition, when the power capability of each phase of the virtual inverters in each virtual optical storage system is dynamically allocated, the sum of the power capability of each phase of each virtual inverter is a set value. The purpose is to ensure that the total power limit of each virtual inverter is a fixed value on the external characteristics, even if the output limits of each phase of each virtual inverter are inconsistent. For example, the total power limit of the virtual inverters of the virtual optical storage system 1 is 12kw, and the total power limit of the virtual inverters of the virtual optical storage system 2 is 15kw. According to the dynamic allocation of the power of each phase, the power limit of each phase of the virtual inverters of the virtual optical storage system 1 is 1kw, 2kw, and 9kw, or the power limit of each phase is 0kw, 1kw, and 11kw, but the total power limit of the virtual inverters of the virtual optical storage system 1 always remains a fixed value of 12kw. From the external characteristics, it can be ensured that the total power limit of each virtual inverter is fixed, and the power of each phase can be allocated relatively freely to maximize the power capability of the inverter.

[0053] In summary, the virtual optical storage system virtualization split inverter power control method of the present application is aimed at inverter power control of an optical storage system containing a multi-phase inverter. Each phase of the inverter can be independently controlled. The power capability of each phase of the virtual inverters in the virtually divided virtual optical storage system is dynamically allocated to better meet the demand for unbalanced output of each phase, thereby improving the utilization rate of the power capability of the optical storage system, avoiding unnecessary electricity purchase from the power grid, reducing operating costs, and the like.

[0054] The embodiment of the present application also provides a computing device, which refers to Figure 3 The computing device comprises a memory 1120, a processor 1110, and a computer program stored in the memory 1120 and executable by the processor 1110. The computer program is stored in the memory 1120 for program code space 1130. When the processor 1110 executes the computer program, the computer program implements the method steps 1131 for executing any method according to the present application.

[0055] The embodiment of the present application also provides a computer readable storage medium. Referring to Figure 4 The computer readable storage medium comprises a storage unit for program code, which is provided with a program 1131' for executing the method steps according to the present application. The program is executed by the processor.

[0056] The embodiment of the present application also provides a computer program product containing instructions. When the computer program product is executed on a computer, the computer executes the method steps according to the present application.

[0057] In the above embodiments, all or part of the embodiments can be implemented by software, hardware, firmware or any combination thereof. When implemented by software, all or part of the embodiments can be implemented in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer loads and executes the computer program instructions, all or part of the processes or functions described in the embodiments of the present application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions can be transmitted from one website, computer, server or data center to another website, computer, server or data center through wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) mode. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. integrated with one or more available media. The available media can be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state disk (SSD)) and the like.

[0058] The skilled person should further appreciate that the units and algorithm steps of the various examples described in connection with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. In order to clearly illustrate the interchangeability of hardware and software, the components and steps of the various examples have been described in general terms above as being functionally related. Whether the functions are performed in hardware or software depends on the particular application and design constraints of the technical solution. The skilled person can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

[0059] Those of ordinary skill in the art can understand that all or part of the steps in the above-mentioned embodiment methods can be completed by a program instructing a processor, and the program can be stored in a computer-readable storage medium, which is a non-transitory medium, such as random access memory, read-only memory, flash memory, hard disk, solid state disk, magnetic tape, floppy disk, optical disc and any combination thereof.

[0060] In particular, the application also provides a computing device comprising a memory, a processor and a computer program stored in the memory and executable by the processor, wherein the processor implements the method as described above when executing the computer program.

[0061] The application also provides a computer-readable storage medium having stored therein a computer program which, when executed by a processor, implements the method as described above. The computer-readable storage medium is preferably a non-volatile readable storage medium.

[0062] The above embodiments are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made according to the spirit and essence of the present application shall be covered within the protection scope of the present application.

Claims

1. A method for power control of virtualized split inverter of optical storage system, the optical storage system comprising an inverter, the inverter being a multi-phase inverter, and each phase of the inverter being independently controlled, characterized in that, The virtualization of the optical storage system is divided into two or more virtual optical storage systems, each virtual optical storage system independently sets a working mode, wherein: Each virtual optical storage system includes a virtual inverter, the power capacity of each phase of the virtual inverter in each virtual optical storage system is dynamically allocated, and the sum of the power capacity of each phase of the virtual inverter in each virtual optical storage system is not greater than the power capacity of the corresponding phase in the optical storage system; When the power capacity of each phase of the virtual inverter in each virtual optical storage system is dynamically allocated, the sum of the power capacity of each phase of at least one virtual inverter is a set value; The process of dynamic allocation of power capability of each phase of the virtual inverters in each virtual optical storage system is performed according to the following formula, which allocates the power capability of the first phase of the virtual inverters in the nth virtual optical storage system , , , in, For the inverter in the photovoltaic-storage system Phase power capability, For the first The virtual inverter in the virtual photovoltaic energy storage system is the first Phase scheduling instructions, The number of virtual optical-storage systems into which the optical-storage system is divided.

2. The optical storage system virtualization clone inverter power control method of claim 1, wherein, When the The virtual inverter in the virtual photovoltaic energy storage system is the first When the phase scheduling command is for output power, such as the first... The virtual inverter in the virtual photovoltaic energy storage system is the first The phase dispatch command is the input power, then in the calculation of the first phase... The virtual inverter in the virtual photovoltaic energy storage system is the first Phase power capability Time definition =0; Conversely, when the first... The virtual inverter in the virtual photovoltaic energy storage system is the first When the phase dispatch command is the input power, such as the first phase... The virtual inverter in the virtual photovoltaic energy storage system is the first If the phase scheduling command is output power, then in the calculation of the allocation of the first phase... The virtual inverter in the virtual photovoltaic energy storage system is the first Phase power capability Time definition It is 0.

3. The optical storage system virtualization clone inverter power control method according to claim 1 or 2, wherein, For each virtual photovoltaic storage system, a set of virtual inverters is provided, each virtual inverter being associated with a corresponding phase of the power grid and having a power capability A set of upper threshold values is provided for the power capabilities of the virtual inverters of the first virtual photovoltaic storage system A set of upper threshold values is provided for the power capabilities of the virtual inverters of the first virtual photovoltaic storage system A set of upper threshold values is provided for the power capabilities of the virtual inverters of the first virtual photovoltaic storage system The upper threshold values are set so as to not be exceeded by the power capabilities of the virtual inverters of the first virtual photovoltaic storage system when the power is allocated.

4. The optical storage system virtualization clone inverter power control method of claim 1, wherein, The power capacity is the maximum output power of the inverter or the maximum absorption power of the inverter.

5. A method for power control of virtualized split inverter of optical storage system, the optical storage system comprising an inverter, the inverter being a multi-phase inverter, and each phase of the inverter being independently controlled, characterized in that, The virtualization of the optical storage system is divided into two or more virtual optical storage systems, each virtual optical storage system independently sets a working mode, wherein: Each virtual optical storage system includes a virtual inverter, the power capacity of each phase of the virtual inverter in each virtual optical storage system is dynamically allocated, and the sum of the power capacity of each phase of the virtual inverter in each virtual optical storage system is not greater than the power capacity of the corresponding phase in the optical storage system; When the power capacity of each phase of the virtual inverter in each virtual optical storage system is dynamically allocated, the sum of the power capacity of each phase of at least one virtual inverter is a set value; Priorities are set for each phase of each virtual inverter in the respective virtual optical storage system, and power capabilities of the respective virtual inverter phase in the first virtual optical storage system are calculated and allocated based on the priorities. ​​ 6. The optical storage system virtualization clone inverter power control method of claim 5, wherein, Pre-setting the power priority of each virtual inverter in the virtual photovoltaic storage system The principle of power capability allocation of the photovoltaic storage system is to allocate according to the priority, first responding to the scheduling instruction of the first phase of the virtual inverter in the virtual photovoltaic storage system with high priority When the photovoltaic storage system has remaining power capability, responding to the scheduling instruction of the first phase of the virtual inverter in the virtual photovoltaic storage system with low priority When the photovoltaic storage system has remaining power capability, responding to the scheduling instruction of the first phase of the virtual inverter in the virtual photovoltaic storage system with low priority 7. The optical storage system virtualization clone inverter power control method according to claim 5 or 6, wherein, For each virtual photovoltaic storage system, a virtual inverter is provided with a power capability in each phase, and a set of upper threshold values is provided for the power capability of the virtual inverter in each phase of the virtual photovoltaic storage system The set of upper threshold values is calculated based on a set of pre-set upper threshold values for the power capability of the virtual inverter in each phase of the virtual photovoltaic storage system.

8. The optical storage system virtualization clone inverter power control method of claim 5, wherein, The power capacity is the maximum output power of the inverter or the maximum absorption power of the inverter.

9. A computing device comprising a memory, a processor, and a computer program stored in the memory and executable by the processor, wherein, The processor executes the computer program to implement the method of any one of claims 1 to 4, or executes the computer program to implement the method of any one of claims 5 to 8.

10. A computer readable storage medium having stored therein a computer program which, when executed by a processor, implements the method of any one of claims 1 to 4, or executes the computer program to implement the method of any one of claims 5 to 8.

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