Control method and device of parallel system and parallel system
By adjusting parameters according to the power generation capacity ratio of each subsystem in the photovoltaic-storage system, the operation of each subsystem can be independently controlled, thus solving the problems of grid-side power runaway and curtailment caused by communication link interruptions, and achieving stable operation and efficient utilization of the system.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SHANGHAI SIGE DIGITAL TECHNOLOGY CO LTD
- Filing Date
- 2026-03-16
- Publication Date
- 2026-07-10
AI Technical Summary
In a photovoltaic-storage system, communication link failures can lead to independent control of each site, potentially causing grid-side power outages or curtailment, affecting normal system operation and equipment utilization.
After the parallel system is disconnected, the target adjustment parameters are determined based on the ratio of the total power generation capacity of each subsystem to the total power generation capacity of the system. The operation of each subsystem is controlled independently to ensure local power dispatch within the allowable power limits and maintain normal system operation.
It effectively reduces the probability of shutdown, reduces the curtailment rate of solar power, improves the utilization rate of solar energy storage equipment, and ensures that the system can still meet power demand when the grid is split up.
Smart Images
Figure CN122371282A_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of photovoltaic energy storage systems, and in particular relates to a control method, device and parallel system for a parallel system. Background Technology
[0002] As the application scenarios of photovoltaic inverters, energy storage converters, and photovoltaic-energy storage converters gradually expand, the capacity and number of devices are also increasing. Because unified energy dispatch management of the entire photovoltaic-energy storage system is required, communication networking of each parallel device is necessary. In related technologies, when a photovoltaic-energy storage system is split into two or more subsystems due to communication link failure, since the power lines are still connected to the same grid interface, independent control of each site may occur, leading to problems such as grid-side power runaway or curtailment. Summary of the Invention
[0003] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes a control method, apparatus, and parallel system for a parallel system, enabling each decoupled subsystem to continuously perform local power scheduling within permissible power limits, maintaining the normal operation of the parallel system to meet power demand, reducing the probability of shutdown, reducing the curtailment rate, and effectively improving the utilization rate of photovoltaic storage equipment.
[0004] In a first aspect, this application provides a control method for a parallel system, the parallel system comprising multiple devices connected in communication with each device, the method comprising: In the event of a communication link failure in the parallel system, the target adjustment parameters corresponding to each of the disconnected subsystems are determined based on the first total power generation capacity of the equipment connected to the disconnected subsystem and the second total power generation capacity of the parallel system. Based on the stated objective, adjust the parameters to control the operation of each subsystem.
[0005] According to the control method of the parallel system of this application, after the parallel system is disconnected, the corresponding operating parameters of each subsystem are updated according to the first total power generation capacity of the equipment connected to each disconnected subsystem and the second total power generation capacity of the parallel system. The operation of each subsystem is independently controlled with respect to the updated operating parameters. This enables each disconnected subsystem to continuously perform local power scheduling within the allowable power limit, maintain the normal operation of the parallel system to meet the power demand, reduce the probability of shutdown, reduce the curtailment rate, and effectively improve the utilization rate of photovoltaic and energy storage equipment.
[0006] According to one embodiment of this application, determining the target adjustment parameters corresponding to each of the disconnected subsystems based on the first total power generation capacity corresponding to the equipment connected to the disconnected subsystem and the second total power generation capacity of the parallel system includes: The target adjustment parameter is determined based on the ratio of the first total power generation capacity to the second total power generation capacity.
[0007] According to one embodiment of this application, the power generation capacity includes at least one of the following: equipment capacity or number of equipment.
[0008] According to one embodiment of this application, controlling the operation of each of the subsystems based on the target adjustment parameters includes: Based on the product of the target adjustment parameters and the target system operating parameters corresponding to the parallel system, the subsystem operating parameters corresponding to each subsystem are determined respectively; Based on the operating parameters of the subsystem, control the operation of the corresponding subsystem.
[0009] According to one embodiment of this application, the target system operating parameters include at least one of equipment limiting parameters and power grid operating parameters.
[0010] According to one embodiment of this application, the power grid operating parameters include: grid connection point capacity and / or reverse flow parameters.
[0011] According to one embodiment of this application, the target system operating parameters include: electricity purchase scenario parameters and / or electricity sales scenario parameters.
[0012] Secondly, this application provides a control device for a parallel operation system, the parallel operation system including multiple devices, each of which is communicatively connected, the device comprising: The first processing module is used to determine the target adjustment parameters corresponding to each of the disconnected subsystems in the event of a communication link failure in the parallel system, based on the first total power generation capacity of the equipment connected to the disconnected subsystem and the second total power generation capacity of the parallel system. The second processing module is used to adjust parameters based on the target and control the operation of each of the subsystems.
[0013] According to the control device of the parallel system of this application, after the parallel system is disconnected, the operating parameters of each subsystem are updated according to the first total power generation capacity of the equipment connected to each disconnected subsystem and the second total power generation capacity of the parallel system. The operation of each subsystem is independently controlled with respect to the updated operating parameters. This enables each disconnected subsystem to continuously perform local power scheduling within the allowable power limit, maintain the normal operation of the parallel system to meet the power demand, reduce the probability of shutdown, reduce the curtailment rate, and effectively improve the utilization rate of photovoltaic and energy storage equipment.
[0014] Thirdly, this application provides a parallel system, including: Multiple devices connected in parallel, with communication connections between each device; The parallel system operates based on the control method for the parallel system as described in the first aspect.
[0015] Fourthly, this application provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the control method for the parallel system as described in the first aspect above.
[0016] Fifthly, this application provides a computer program product, including a computer program that, when executed by a processor, implements the control method for the parallel system as described in the first aspect above.
[0017] The above-described one or more technical solutions in the embodiments of this application have at least one of the following technical effects: By updating the operating parameters of each subsystem after a disconnection occurs, based on the first total power generation capacity of the equipment connected to each disconnected subsystem and the second total power generation capacity of the parallel system, and independently controlling the operation of each subsystem with the updated operating parameters, each disconnected subsystem can continuously perform local power scheduling within permissible power limits, maintain the normal operation of the parallel system to meet power demand, reduce the probability of shutdown, reduce the curtailment rate, and effectively improve the utilization rate of photovoltaic and energy storage equipment.
[0018] Furthermore, by determining the target adjustment parameters based on the ratio of the first total power generation capacity of the disconnected subsystem to the second total power generation capacity of the parallel system after the disconnection of the parallel system, a proportional reduction can be achieved, resulting in high control accuracy.
[0019] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description
[0020] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a flowchart illustrating the control method of the parallel system provided in the embodiments of this application; Figure 2 This is one of the structural schematic diagrams of the parallel system provided in the embodiments of this application; Figure 3 This is a second schematic diagram of the parallel system provided in the embodiments of this application; Figure 4 This is a schematic diagram of the control device of the parallel system provided in the embodiments of this application; Figure 5This is a schematic diagram of the structure of the electronic device provided in the embodiments of this application. Detailed Implementation
[0021] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.
[0022] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.
[0023] The control method, control device, electronic device, and readable storage medium of the parallel system provided in this application will be described in detail below with reference to the accompanying drawings and through specific embodiments and application scenarios.
[0024] The control method of the parallel system can be applied to the terminal, and can be executed by the hardware or software in the terminal.
[0025] like Figure 1 As shown, the control method of the parallel system includes steps 110 and 120.
[0026] The parallel system includes multiple devices that are interconnected.
[0027] The equipment can be pure energy storage equipment, pure photovoltaic equipment, photovoltaic-energy storage equipment, photovoltaic inverters, energy storage converters, photovoltaic-energy storage converters, etc., with each device connected in parallel to the power grid. Each device can serve as a slave control unit, such as... Figure 2 and Figure 3 As shown.
[0028] In some embodiments, the devices can communicate with each other via wired or wireless connections. Wired communication connections include, but are not limited to, Ethernet cables, RS485, CAN, SPI, UART, I2C, and power line communication PLCs. Wireless communication connections include, but are not limited to, mobile communication, Wi-Fi, Sub-1G, Zigbee, and Bluetooth.
[0029] In some embodiments, the parallel system may further include a grid connection point acquisition device, which is connected to the public power grid connection point for real-time monitoring, control, protection and recording of electrical information at the grid connection point.
[0030] The control method for a parallel system provided in this application embodiment can be executed by a main controller unit selected from each device, or by an external main controller independent of each device. The control method for a parallel system provided in this application embodiment is described below using an external main controller independent of each device as the execution subject.
[0031] Step 110: In the event of a communication link failure in the parallel system, determine the target adjustment parameters corresponding to each disconnected subsystem based on the first total power generation capacity of the equipment connected to the disconnected subsystem and the second total power generation capacity of the parallel system. In this step, under normal operating conditions, each device communicates normally with the power grid and is subject to unified control. In some cases, such as when a communication link is lost, the device may disconnect from the power grid. This type of disconnection transforms a current source (subject to grid dispatch) into a voltage source. One or more devices that need to independently establish and maintain a stable power grid for the local load constitute a disconnected subsystem.
[0032] The decoupled subsystem needs to be removed from the unified control system and controlled independently. In the event of a communication link failure, the parallel system may be decoupled into two or more subsystems, each subsystem comprising one or more devices, with communication connections maintained between devices within the same subsystem.
[0033] In some embodiments, power generation capacity includes at least one of: equipment capacity or number of equipment.
[0034] Among them, equipment capacity refers to AC port capacity or inverter capacity, and the number of equipment refers to the total number of all equipment included in the decoupled subsystem.
[0035] The first total generating capacity corresponding to the equipment connected to the decoupled subsystem is the sum of the generating capacities of all equipment connected to the decoupled subsystem. It is understandable that after a decoupled subsystem is formed, the number and type of equipment connected to each subsystem may differ, therefore the first total generating capacity corresponding to different subsystems may vary.
[0036] The second total power generation capacity of a parallel system is the sum of the power generation capacities of all the equipment included in the parallel system. For different subsystems obtained by decomposing the same parallel system, their corresponding second total power generation capacity is the same value.
[0037] The target adjustment parameter is used to proportionally reduce the operating parameters of the subsystem based on the operating parameters of the parallel system before the disconnection. The target adjustment parameter is a value between 0 and 1.
[0038] In some embodiments, determining the target adjustment parameters for each disconnected subsystem based on the first total power generation capacity of the equipment connected to the disconnected subsystem and the second total power generation capacity of the parallel system may include: The target adjustment parameters are determined based on the ratio of the first total power generation capacity to the second total power generation capacity.
[0039] In this embodiment, the target adjustment parameter = the total capacity of all devices connected to the subsystem that has been decoupled ÷ the total capacity of all devices included in the parallel system; or, the target adjustment parameter = the total number of devices connected to the subsystem that has been decoupled ÷ the total number of devices included in the parallel system.
[0040] According to the control method of the parallel system provided in the embodiments of this application, after the parallel system is disconnected, the target adjustment parameter is determined based on the ratio of the first total power generation capacity corresponding to the disconnected subsystem to the second total power generation capacity of the parallel system, which can achieve proportional reduction and has high control accuracy.
[0041] Step 120: Adjust parameters based on the target to control the operation of each subsystem.
[0042] In this step, for the multiple subsystems obtained after decoupling, each subsystem adjusts its parameters independently according to its corresponding target. This can be open-loop control or closed-loop control, depending on whether the subsystem has a grid connection point acquisition device.
[0043] During the research and development process, the inventors discovered that in related technologies, when a parallel system is split into two or more subsystems due to a communication link failure, since the power lines are still connected to the same grid interface, each station may be independently controlled, which may lead to grid-side power outages, such as each subsystem independently controlling its grid connection point; or there may be issues such as curtailment, such as a subsystem detecting a communication link failure and shutting down, which affect the normal operation of the parallel system.
[0044] According to the control method of the parallel system provided in the embodiments of this application, after the parallel system is disconnected, the operating parameters of each subsystem are updated according to the first total power generation capacity of the equipment connected to each disconnected subsystem and the second total power generation capacity of the parallel system. The operation of each subsystem is independently controlled with respect to the updated operating parameters. This enables each disconnected subsystem to continuously perform local power scheduling within the allowable power limit, maintain the normal operation of the parallel system to meet the power demand, reduce the probability of shutdown, reduce the curtailment rate, and effectively improve the utilization rate of photovoltaic and energy storage equipment.
[0045] In some embodiments, step 120 includes: Based on the product of the target adjustment parameters and the target system operating parameters corresponding to the parallel system, the subsystem operating parameters corresponding to each subsystem are determined respectively; Control the operation of the corresponding subsystem based on the subsystem's operating parameters.
[0046] In this embodiment, the target system operating parameters are the rated operating parameters specified by the power grid to which the parallel system is connected, that is, the overall system operating parameters when each subsystem is treated as a whole before disconnection.
[0047] In actual implementation, the following formula can be used to determine the operating parameters of the corresponding subsystem: K'n=αn*K Where K'n is the subsystem operating parameter corresponding to the nth subsystem; αn is the target adjustment parameter corresponding to the nth subsystem, αn=Cn / C; Cn is the first total power generation capacity corresponding to the nth subsystem after disconnection; C is the second total power generation capacity corresponding to the entire parallel system before disconnection, n is a positive integer; K is the target system operating parameter.
[0048] In some embodiments, the target system operating parameters include at least one of grid operating parameters and equipment limiting parameters. In some embodiments, grid operating parameters may include grid connection point capacity and / or reverse current parameters.
[0049] In this embodiment, the grid connection point capacity is the maximum power limit at the grid connection point where the parallel system is connected to the public power grid, enabling safe and stable power exchange. The grid connection point capacity generally does not change regardless of whether the parallel system is disconnected from the grid.
[0050] In some embodiments, the grid connection point capacity can be determined based on the maximum power that the electrical equipment such as switches, transformers, and lines at the grid connection point can withstand over a long period under safe current-carrying conditions. In some embodiments, the grid connection point capacity can also be the maximum power that the power company is allowed to inject or draw upon.
[0051] Reverse flow parameters are used to monitor, judge, and respond to the reverse active power at the grid connection point, which are the relevant parameters of electrical energy flowing from the user side to the grid side.
[0052] In actual implementation, grid connection capacity and reverse flow parameters can also be used as key control parameters. The grid connection capacity and reverse flow parameters of the parallel system can be proportionally reduced according to the target adjustment parameters to determine the grid connection capacity and reverse flow parameters of the subsystem. The operation of the corresponding subsystem can then be controlled based on the proportionally reduced grid connection capacity and reverse flow parameters.
[0053] In some embodiments, grid operating parameters may also include, but are not limited to, inverter parameters, photovoltaic power, and energy storage power.
[0054] In some embodiments, device limiting parameters may include, but are not limited to: inverter power limiting parameters, photovoltaic limiting parameters, energy storage limiting parameters, etc.
[0055] It should be noted that before disconnection, the equipment limitation parameters in the target system operating parameters are used to limit the power of the entire power grid, including but not limited to the total inverter input / output power limit, total photovoltaic power limit, and total energy storage maximum charge / discharge power limit.
[0056] After a disconnection occurs, the equipment limitation parameters in the subsystem operating parameters can be proportionally reduced according to the calculated target adjustment parameters to obtain the reduced equipment limitation parameters, including but not limited to the inverter input / output power limit, photovoltaic power limit, and maximum charge / discharge power limit of each subsystem.
[0057] In some embodiments, the target system operating parameters include: electricity purchase scenario parameters and / or electricity sales scenario parameters.
[0058] In this embodiment, relevant system operating parameters under the current working scenario can be obtained as target system operating parameters based on the electricity buying and selling scenario of the parallel system. These parameters can include electricity selling / buying power and other parameters. The target system operating parameters corresponding to the parallel system are proportionally reduced according to the target adjustment parameters to determine the subsystem operating parameters corresponding to the subsystem. The operation of the corresponding subsystem is then controlled based on the subsystem operating parameters.
[0059] The following is combined Figure 2 and Figure 3 The control logic of parallel systems in various scenarios is explained in detail.
[0060] In some embodiments, the parallel system is equipped with a grid connection point acquisition device, which is independently located outside each device, such as... Figure 2As shown. For a parallel system using a grid connection point acquisition device, if the parallel system is split into subsystem A and subsystem B, the grid connection point acquisition device is located in subsystem B, and subsystem A does not have a grid connection point acquisition device.
[0061] In the actual control process, the target adjustment parameter αA corresponding to subsystem A and the target adjustment parameter αB corresponding to subsystem B are calculated according to the method in step 110. Then, the subsystem operating parameter K'A corresponding to subsystem A and the subsystem operating parameter K'B corresponding to subsystem B are calculated according to the product of the target adjustment parameter and the target system operating parameter corresponding to the parallel system.
[0062] Using K'A as the key operating parameter of the power grid, subsystem A is controlled to operate continuously, enabling subsystem A to perform local power dispatching under proportionally reduced allowable power sales / purchase limits. In some embodiments, subsystem A can be controlled in an open-loop manner.
[0063] Using K'B as the key operating parameter of the power grid to control the continuous operation of subsystem B, subsystem B can perform local power dispatching under a proportionally reduced limit on the allowed power to be sold / bought.
[0064] In some embodiments, the parallel system is equipped with a grid connection point acquisition device, and the grid connection point acquisition device is respectively installed in each device, such as... Figure 3 As shown. For a parallel system with a built-in grid connection point acquisition device, if the parallel system is split into subsystems C and D, there are valid grid connection point acquisition devices in both subsystem C and subsystem D.
[0065] In the actual control process, the target adjustment parameter αC corresponding to subsystem C and the target adjustment parameter αD corresponding to subsystem D are calculated according to the method in step 110. Then, the subsystem operating parameter K'C corresponding to subsystem C and the subsystem operating parameter K'D corresponding to subsystem D are calculated according to the product of the target adjustment parameter and the target system operating parameter corresponding to the parallel system.
[0066] Using K'C as the key operating parameter of the power grid to control the continuous operation of subsystem C, subsystem C can perform local power dispatching under a proportionally reduced limit on the allowed power to be sold / bought.
[0067] Using K'D as the key operating parameter of the power grid to control the continuous operation of subsystem D, subsystem D can perform local power dispatching under the proportionally reduced allowable power sales / purchase limits.
[0068] Of course, in other embodiments, such as in a parallel system without a grid connection point acquisition device, after a disconnection occurs, each disconnected subsystem can also be controlled independently with proportional scaling according to the control method of steps 110 to 120.
[0069] According to the control method of the parallel system provided in the embodiments of this application, after the parallel system is disconnected, each subsystem is controlled to continue to independently perform grid power dispatch based on the proportionally reduced subsystem operating parameters. This ensures that the grid operates within the range of allowable key operating parameters and allows the subsystem to retain some control capabilities, ensuring that the equipment can continue to operate normally. On this basis, by proportionally reducing the target system operating parameters according to the ratio of the first total generating capacity corresponding to the disconnected subsystem to the second total generating capacity of the parallel system, the subsystem operating parameters corresponding to each subsystem are obtained, which has high control accuracy.
[0070] The control method for a parallel system provided in this application can be executed by a control device for the parallel system. This application uses the example of a control device executing the control method for a parallel system to illustrate the control device for the parallel system provided in this application.
[0071] This application also provides a control device for a parallel system.
[0072] like Figure 4 As shown, the control device of the parallel system includes: a first processing module 410 and a second processing module 420.
[0073] The first processing module 410 is used to determine the target adjustment parameters corresponding to each disconnected subsystem based on the first total power generation capacity of the equipment connected to the disconnected subsystem and the second total power generation capacity of the parallel system when a communication link is lost in the parallel system. The second processing module 420 is used to adjust parameters based on the target and control the operation of each subsystem.
[0074] According to the control device of the parallel system provided in the embodiments of this application, after the parallel system is disconnected, the operating parameters of each subsystem are updated according to the first total power generation capacity of the equipment connected to each disconnected subsystem and the second total power generation capacity of the parallel system. The device also independently controls the operation of each subsystem with respect to the updated operating parameters. This enables each disconnected subsystem to continuously perform local power scheduling within the allowable power limit, maintain the normal operation of the parallel system to meet the power demand, reduce the probability of shutdown, reduce the curtailment rate, and effectively improve the utilization rate of photovoltaic and energy storage equipment.
[0075] In some embodiments, the first processing module 410 is configured to: The target adjustment parameters are determined based on the ratio of the first total power generation capacity to the second total power generation capacity.
[0076] In some embodiments, power generation capacity includes at least one of: equipment capacity or number of equipment.
[0077] In some embodiments, the second processing module 420 is configured to: Based on the product of the target adjustment parameters and the target system operating parameters corresponding to the parallel system, the subsystem operating parameters corresponding to each subsystem are determined respectively; Control the operation of the corresponding subsystem based on the subsystem's operating parameters.
[0078] In some embodiments, the target system operating parameters include: grid connection point capacity and / or reverse flow parameters.
[0079] The control device of the parallel system in this application embodiment can be an electronic device or a component of an electronic device, such as an integrated circuit or a chip. The electronic device can be a terminal or other devices besides a terminal. For example, the electronic device can be a mobile phone, tablet computer, laptop computer, handheld computer, in-vehicle electronic device, mobile internet device (MID), augmented reality (AR) / virtual reality (VR) device, robot, wearable device, ultra-mobile personal computer (UMPC), netbook or personal digital assistant (PDA), etc. It can also be a server, network attached storage (NAS), personal computer (PC), television (TV), ATM or self-service machine, etc. The embodiments of this application do not specifically limit it.
[0080] The control device of the parallel system in this application embodiment can be a device with an operating system. The operating system can be Android, iOS, or other possible operating systems, and this application embodiment does not specifically limit it.
[0081] The control device for the parallel system provided in this application embodiment can achieve... Figure 1 The various processes implemented in the method implementation examples will not be described again here to avoid repetition.
[0082] This application also provides a parallel system.
[0083] like Figure 2 As shown, the parallel system includes multiple devices connected in parallel, and the devices are interconnected. The parallel system operates based on the control method of the parallel system described in any of the above embodiments.
[0084] In some embodiments, the parallel system may further include one or more grid connection point acquisition devices.
[0085] In some embodiments, the grid connection point acquisition device may be installed inside each of the multiple devices, or the grid connection point acquisition device may be installed independently and connected to any one of the multiple devices.
[0086] According to the parallel system provided in the embodiments of this application, after the parallel system is disconnected, the operating parameters of each subsystem are updated according to the first total power generation capacity of the equipment connected to each disconnected subsystem and the second total power generation capacity of the parallel system. The operation of each subsystem is independently controlled with respect to the updated operating parameters. This enables each disconnected subsystem to continuously perform local power scheduling within the allowable power limit, maintain the normal operation of the parallel system to meet the power demand, reduce the probability of shutdown, reduce the curtailment rate, and effectively improve the utilization rate of photovoltaic and energy storage equipment.
[0087] In some embodiments, such as Figure 5 As shown, this application embodiment also provides an electronic device 500, including a processor 501, a memory 502, and a computer program stored in the memory 502 and executable on the processor 501. When the program is executed by the processor 501, it implements the various processes of the control method embodiment of the parallel system described above and can achieve the same technical effect. To avoid repetition, it will not be described again here.
[0088] This application also provides a non-transitory computer-readable storage medium storing a computer program. When the computer program is executed by a processor, it implements the various processes of the control method embodiment of the parallel system described above and achieves the same technical effect. To avoid repetition, it will not be described again here.
[0089] The processor is the processor in the electronic device described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk.
[0090] This application also provides a computer program product, including a computer program that, when executed by a processor, implements the control method of the above-described parallel system.
[0091] The processor is the processor in the electronic device described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk.
[0092] This application embodiment also provides a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement the various processes of the control method embodiment of the above parallel system and can achieve the same technical effect. To avoid repetition, it will not be described again here.
[0093] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.
[0094] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.
[0095] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a computer software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods described in the various embodiments of this application.
[0096] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.
[0097] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0098] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.
Claims
1. A control method for a parallel system, characterized in that, The parallel system includes multiple devices, which are communicatively connected to each other. The method includes: In the event of a communication link failure in the parallel system, the target adjustment parameters corresponding to each of the disconnected subsystems are determined based on the total power generation capacity of the equipment connected to the disconnected subsystem and the total power generation capacity of the parallel system. Based on the stated objective, adjust the parameters to control the operation of each subsystem.
2. The control method for a parallel system according to claim 1, characterized in that, The step of determining the target adjustment parameters for each of the disconnected subsystems based on the first total power generation capacity of the equipment connected to the disconnected subsystem and the second total power generation capacity of the parallel system includes: The target adjustment parameter is determined based on the ratio of the first total power generation capacity to the second total power generation capacity.
3. The control method for a parallel system according to claim 2, characterized in that, Power generation capacity includes at least one of the following: equipment capacity or number of equipment.
4. The control method for a parallel system according to any one of claims 1-3, characterized in that, The step of adjusting the parameters based on the target and controlling the operation of each subsystem includes: Based on the product of the target adjustment parameters and the target system operating parameters corresponding to the parallel system, the subsystem operating parameters corresponding to each subsystem are determined respectively; Based on the operating parameters of the subsystem, control the operation of the corresponding subsystem.
5. The control method for a parallel system according to claim 4, characterized in that, The target system operating parameters include at least one of equipment limiting parameters and power grid operating parameters.
6. The control method for a parallel system according to claim 5, characterized in that, The power grid operating parameters include: grid connection point capacity and / or reverse flow parameters.
7. The control method for a parallel system according to claim 4, characterized in that, The target system operating parameters include: electricity purchase scenario parameters and / or electricity sales scenario parameters.
8. A control device for a parallel system, characterized in that, The parallel system includes multiple devices, and the devices are interconnected, including: The first processing module is used to determine the target adjustment parameters corresponding to each of the disconnected subsystems in the event of a communication link failure in the parallel system, based on the first total power generation capacity of the equipment connected to the disconnected subsystem and the second total power generation capacity of the parallel system. The second processing module is used to adjust parameters based on the target and control the operation of each of the subsystems.
9. A parallel system, characterized in that, include: Multiple devices connected in parallel, with communication connections between each device; The parallel system operates based on the control method of the parallel system as described in any one of claims 1 to 7.
10. The parallel system according to claim 9, characterized in that, It also includes grid connection point data acquisition devices. The grid connection point acquisition device is installed inside each of the plurality of devices, or the grid connection point acquisition device is set independently and connected to any one of the plurality of devices.