Configuration and control method and device of household photovoltaic energy storage system

Abstract

The invention relates to the technical field of photovoltaic energy storage systems, and discloses a configuration and control method and device for a household photovoltaic energy storage system, and the method comprises the steps: obtaining the scene information of a target scene and the equipment information corresponding to candidate equipment; determining a target system architecture needing to be configured according to the scene information; according to the target system architecture and the equipment information, screening out target equipment meeting a system construction condition from the candidate equipment; based on the target system architecture and all the target devices, constructing a zero-output control system which corresponds to the household photovoltaic energy storage system and carries out communication based on the target communication protocol; and after the zero output control system is started, the zero output control system executes power adjustment operation according to the real-time operation data corresponding to the household photovoltaic energy storage system, so that the household photovoltaic energy storage system is in a zero output mode. Therefore, the configuration flexibility and reliability of the zero output control system can be improved, and the operation control flexibility and accuracy of the system can be improved.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic energy storage system technology, and in particular to a configuration and control method and device for a residential photovoltaic energy storage system. Background Technology

[0002] In some regions, due to potential difficulties in obtaining grid connection permits, the instability caused by aging power grids being unable to withstand reverse power transmission, and confusion in bidirectional electricity billing, a zero-export mode is chosen for residential photovoltaic energy storage systems. Zero-export means that the residential photovoltaic energy storage system prevents excess electricity from being fed into the public grid by adjusting the power generation and charging / discharging power in real time, achieving only self-consumption and storage of electricity.

[0003] Currently, most existing residential photovoltaic energy storage systems require the use of inverters, energy storage devices, and dedicated hardware from the same brand to achieve a zero-output mode. However, due to the high dependence of existing systems on specific brand ecosystems, the data interface types and communication protocols of different brands are incompatible, making it difficult to achieve interconnection and collaboration between devices from different brands. This results in poor system scalability, and systems using a mix of multi-brand devices are prone to control lag or power supply deviation, leading to system instability.

[0004] Therefore, it is particularly important to propose a technical solution that can improve the configuration flexibility and reliability of the zero-output control system corresponding to the residential photovoltaic energy storage system, while also improving the operational control flexibility and accuracy of the residential photovoltaic energy storage system, thereby enhancing the system's operational stability. Summary of the Invention

[0005] This invention provides a configuration and control method and apparatus for a residential photovoltaic energy storage system, which can improve the configuration flexibility and reliability of the zero-output control system corresponding to the residential photovoltaic energy storage system, while improving the operation control flexibility and accuracy of the residential photovoltaic energy storage system, thereby improving the system operation stability.

[0006] To address the aforementioned technical problems, the first aspect of this invention discloses a configuration and control method for a residential photovoltaic energy storage system, the method comprising: Obtain scene information of the target scenario and device information corresponding to multiple candidate devices; wherein, the target scenario is a scenario in which a zero-output control system needs to be configured for a residential photovoltaic energy storage system; Based on the scenario information, determine the target system architecture that needs to be configured; Based on the target system architecture and all the device information, select multiple target devices that meet the determined system construction conditions from all the candidate devices; Based on the target system architecture and all the target devices, a zero-output control system corresponding to the residential photovoltaic energy storage system is constructed; wherein, the devices included in the zero-output control system communicate with each other based on a determined target communication protocol; After the zero-output control system is activated, the zero-output control system performs power adjustment operation based on the real-time operating data corresponding to the residential photovoltaic energy storage system, so that the residential photovoltaic energy storage system is in zero-output mode; wherein, the real-time operating data includes real-time load data and real-time energy storage data.

[0007] As an optional implementation, in the first aspect of the present invention, the scene information includes scene scale information of the target scene and photovoltaic energy storage configuration information corresponding to the household photovoltaic energy storage system; The step of determining the target system architecture to be configured based on the scenario information includes: Based on the scene scale information, determine the scene type corresponding to the target scene; Based on the scenario type, determine the system operation index range corresponding to the residential photovoltaic energy storage system; wherein, the system operation index range includes the load power range and / or the energy storage capacity demand range; Based on the system operation index range, determine the inverter configuration information required for the residential photovoltaic energy storage system; wherein, the inverter configuration information includes the number of inverters configured; when the number of inverters configured is greater than 1, the inverter configuration information also includes the inverter configuration relationship; Based on the inverter configuration information and the photovoltaic-storage configuration information, the target system architecture to be configured is determined.

[0008] As an optional implementation, in the first aspect of the present invention, determining the target system architecture to be configured based on the inverter configuration information and the photovoltaic-storage configuration information includes: When the photovoltaic-storage configuration information indicates that the residential photovoltaic energy storage system is configured with both a photovoltaic system and an energy storage system, the required system architecture type is determined to be a first architecture type. Based on the first architecture type and the inverter configuration information, a first target system architecture is determined. The first target system architecture is one of a single-unit system architecture, a master-slave parallel system architecture, and an external data management parallel system architecture. The inverter configured in the first target system architecture includes an energy storage inverter. When the photovoltaic-energy storage configuration information indicates that the residential photovoltaic energy storage system is configured with only a photovoltaic system but not an energy storage system, the required system architecture type is determined to be the second architecture type, and the required second target system architecture is determined according to the second architecture type and the inverter configuration information; wherein, the second target system architecture is a non-energy storage and energy storage parallel system architecture, and the inverters configured in the non-energy storage and energy storage parallel system architecture include energy storage inverters and non-energy storage inverters; The target system architecture includes either the first target system architecture or the second target system architecture.

[0009] As an optional implementation, in the first aspect of the present invention, the device information corresponding to each candidate device includes one or more combinations of signal transmission method, cooperative mode configuration information, power control method, device rated specification information and security authentication information; The step of selecting multiple target devices that meet the determined system construction conditions from all candidate devices based on the target system architecture and all device information includes: Based on the target system architecture, determine the device screening conditions corresponding to the target system architecture; wherein, the device screening conditions include device type screening conditions and device quantity screening conditions; Determine device matching conditions that match the target system architecture; wherein, the device matching conditions include at least one matching sub-condition from the following categories: communication matching conditions, power regulation matching conditions, current measurement matching conditions, mode matching conditions, and security authentication matching conditions; Based on all the device information, multiple target devices that meet the device screening criteria and the device matching criteria are selected from all the candidate devices.

[0010] As an optional implementation, in the first aspect of the present invention, the step of selecting a plurality of target devices that satisfy the device selection criteria and the device matching criteria from all the candidate devices based on all the device information includes: Based on all the device information, multiple preliminary screening device sets that meet the device type screening conditions are selected from all the candidate devices; wherein each preliminary screening device set includes at least one preliminary screening device, and all the preliminary screening devices included in the preliminary screening device set belong to the same target device type in the device type screening conditions; Based on the device matching criteria and all the device information, the device matching degree corresponding to each determined device combination is evaluated; wherein, each device combination includes preliminary screening devices belonging to multiple preliminary screening device sets, and each device combination satisfies the device quantity screening criteria; From all the device combinations, select target device combinations with a device matching degree higher than or equal to a preset matching degree threshold, and determine all the initially screened devices in the target device combinations as target devices.

[0011] As an optional implementation, in the first aspect of the present invention, evaluating the device matching degree corresponding to each determined device combination based on the device matching conditions and all the device information includes: For each determined device combination, the matching degree of the device combination with respect to each matching sub-condition is evaluated based on each matching sub-condition and all the device information. For each of the device combinations, the device matching degree corresponding to the device combination is calculated based on the matching degree corresponding to all the matching sub-conditions. Among them, the matching degree corresponding to all the matching sub-conditions includes at least one of communication matching degree, power regulation matching degree, current measurement matching degree, mode matching degree and security authentication matching degree; Wherein, the communication matching degree is used to represent the degree of matching between the target communication protocols used by all the preliminary screening devices in the device combination; the power regulation matching degree is used to represent the degree of adaptation of the real-time power regulation function among the preliminary screening devices related to power regulation in the device combination; the current measurement matching degree is used to represent the degree of adaptation of the real-time current measurement function among the preliminary screening devices related to current measurement in the device combination; the mode matching degree is used to represent the degree of matching between the cooperative mode information configured by the inverter of the device combination and the cooperative mode requirements corresponding to the target system architecture; wherein, the security authentication matching degree is used to represent the degree of matching between the security authentication information of all the preliminary screening devices in the device combination and the preset security authentication standard.

[0012] As an optional implementation, in a first aspect of the invention, for each determined combination of devices, evaluating the matching degree of the combination of devices with respect to each matching sub-condition based on each matching sub-condition and all the device information includes: When the matching sub-condition is the communication matching condition, the first communication matching degree corresponding to the device combination is evaluated according to the communication matching condition; wherein, the first communication matching degree is used to represent the degree of matching between the communication protocols actually used by all the preliminary screening devices of the device combination; When the first communication matching degree is lower than the preset communication matching degree, it is determined whether the device combination meets the communication protocol conversion conditions; When it is determined that the device combination meets the communication protocol conversion conditions, the first communication matching degree of the device combination is increased to obtain the second communication matching degree, and the second communication matching degree is determined as the communication matching degree of the device combination; When the first communication matching degree is higher than or equal to the preset communication matching degree, or when it is determined that the device combination does not meet the communication protocol conversion conditions, the first communication matching degree is determined as the communication matching degree of the device combination.

[0013] A second aspect of this invention discloses a configuration and control device for a residential photovoltaic energy storage system, the device comprising: The acquisition module is used to acquire scene information of the target scene and device information corresponding to multiple candidate devices; wherein, the target scene is a scene that requires the configuration of a zero-output control system for a residential photovoltaic energy storage system; The determination module is used to determine the target system architecture to be configured based on the scenario information. The filtering module is used to filter out multiple target devices that meet the determined system construction conditions from all the candidate devices based on the target system architecture and all the device information; A construction module is used to construct a zero-output control system corresponding to the residential photovoltaic energy storage system based on the target system architecture and all the target devices; wherein, the devices included in the zero-output control system communicate with each other based on a determined target communication protocol; The power regulation module is used to enable the zero-output control system to perform power regulation operations based on the real-time operating data corresponding to the residential photovoltaic energy storage system after the zero-output control system is activated, so as to put the residential photovoltaic energy storage system in zero-output mode; wherein, the real-time operating data includes real-time load data and real-time energy storage data.

[0014] As an optional implementation, in the second aspect of the present invention, the scene information includes scene scale information of the target scene and photovoltaic energy storage configuration information corresponding to the household photovoltaic energy storage system; The determining module determines the specific method for configuring the target system architecture based on the scenario information, including: Based on the scene scale information, determine the scene type corresponding to the target scene; Based on the scenario type, determine the system operation index range corresponding to the residential photovoltaic energy storage system; wherein, the system operation index range includes the load power range and / or the energy storage capacity demand range; Based on the system operation index range, determine the inverter configuration information required for the residential photovoltaic energy storage system; wherein, the inverter configuration information includes the number of inverters configured; when the number of inverters configured is greater than 1, the inverter configuration information also includes the inverter configuration relationship; Based on the inverter configuration information and the photovoltaic-storage configuration information, the target system architecture to be configured is determined.

[0015] As an optional implementation, in a second aspect of the present invention, the determining module determines the specific method by which it determines the target system architecture to be configured based on the inverter configuration information and the photovoltaic-storage configuration information, including: When the photovoltaic-storage configuration information indicates that the residential photovoltaic energy storage system is configured with both a photovoltaic system and an energy storage system, the required system architecture type is determined to be a first architecture type. Based on the first architecture type and the inverter configuration information, a first target system architecture is determined. The first target system architecture is one of a single-unit system architecture, a master-slave parallel system architecture, and an external data management parallel system architecture. The inverter configured in the first target system architecture includes an energy storage inverter. When the photovoltaic-energy storage configuration information indicates that the residential photovoltaic energy storage system is configured with only a photovoltaic system but not an energy storage system, the required system architecture type is determined to be the second architecture type, and the required second target system architecture is determined according to the second architecture type and the inverter configuration information; wherein, the second target system architecture is a non-energy storage and energy storage parallel system architecture, and the inverters configured in the non-energy storage and energy storage parallel system architecture include energy storage inverters and non-energy storage inverters; The target system architecture includes either the first target system architecture or the second target system architecture.

[0016] As an optional implementation, in the second aspect of the present invention, the device information corresponding to each candidate device includes one or more combinations of signal transmission method, cooperative mode configuration information, power control method, device rated specification information and security authentication information; The specific method by which the filtering module selects multiple target devices that meet the determined system construction conditions from all candidate devices based on the target system architecture and all device information includes: Based on the target system architecture, determine the device screening conditions corresponding to the target system architecture; wherein, the device screening conditions include device type screening conditions and device quantity screening conditions; Determine device matching conditions that match the target system architecture; wherein, the device matching conditions include at least one matching sub-condition from the following categories: communication matching conditions, power regulation matching conditions, current measurement matching conditions, mode matching conditions, and security authentication matching conditions; Based on all the device information, multiple target devices that meet the device screening criteria and the device matching criteria are selected from all the candidate devices.

[0017] As an optional implementation, in a second aspect of the present invention, the specific method by which the filtering module filters out multiple target devices that meet the device filtering conditions and the device matching conditions from all the candidate devices based on all the device information includes: Based on all the device information, multiple preliminary screening device sets that meet the device type screening conditions are selected from all the candidate devices; wherein each preliminary screening device set includes at least one preliminary screening device, and all the preliminary screening devices included in the preliminary screening device set belong to the same target device type in the device type screening conditions; Based on the device matching criteria and all the device information, the device matching degree corresponding to each determined device combination is evaluated; wherein, each device combination includes preliminary screening devices belonging to multiple preliminary screening device sets, and each device combination satisfies the device quantity screening criteria; From all the device combinations, select target device combinations with a device matching degree higher than or equal to a preset matching degree threshold, and determine all the initially screened devices in the target device combinations as target devices.

[0018] As an optional implementation, in a second aspect of the invention, the specific method by which the screening module evaluates the device matching degree corresponding to each determined device combination based on the device matching conditions and all the device information includes: For each determined device combination, the matching degree of the device combination with respect to each matching sub-condition is evaluated based on each matching sub-condition and all the device information. For each of the device combinations, the device matching degree corresponding to the device combination is calculated based on the matching degree corresponding to all the matching sub-conditions. Among them, the matching degree corresponding to all the matching sub-conditions includes at least one of communication matching degree, power regulation matching degree, current measurement matching degree, mode matching degree and security authentication matching degree; Wherein, the communication matching degree is used to represent the degree of matching between the target communication protocols used by all the preliminary screening devices in the device combination; the power regulation matching degree is used to represent the degree of adaptation of the real-time power regulation function among the preliminary screening devices related to power regulation in the device combination; the current measurement matching degree is used to represent the degree of adaptation of the real-time current measurement function among the preliminary screening devices related to current measurement in the device combination; the mode matching degree is used to represent the degree of matching between the cooperative mode information configured by the inverter of the device combination and the cooperative mode requirements corresponding to the target system architecture; wherein, the security authentication matching degree is used to represent the degree of matching between the security authentication information of all the preliminary screening devices in the device combination and the preset security authentication standard.

[0019] As an optional implementation, in a second aspect of the invention, for each determined device combination, the filtering module evaluates the matching degree of the device combination with respect to each matching sub-condition based on each matching sub-condition and all the device information, including: When the matching sub-condition is the communication matching condition, the first communication matching degree corresponding to the device combination is evaluated according to the communication matching condition; wherein, the first communication matching degree is used to represent the degree of matching between the communication protocols actually used by all the preliminary screening devices of the device combination; When the first communication matching degree is lower than the preset communication matching degree, it is determined whether the device combination meets the communication protocol conversion conditions; When it is determined that the device combination meets the communication protocol conversion conditions, the first communication matching degree of the device combination is increased to obtain the second communication matching degree, and the second communication matching degree is determined as the communication matching degree of the device combination; When the first communication matching degree is higher than or equal to the preset communication matching degree, or when it is determined that the device combination does not meet the communication protocol conversion conditions, the first communication matching degree is determined as the communication matching degree of the device combination.

[0020] A third aspect of the present invention discloses another configuration and control device for a residential photovoltaic energy storage system, the device comprising: Memory containing executable program code; A processor coupled to the memory; The processor calls the executable program code stored in the memory to execute some or all of the steps of the configuration and control method for a residential photovoltaic energy storage system disclosed in the first aspect of the present invention.

[0021] The fourth aspect of the present invention discloses a computer storage medium storing computer instructions, which, when invoked, are used to execute some or all of the steps of the configuration and control method for a residential photovoltaic energy storage system disclosed in the first aspect of the present invention.

[0022] Compared with the prior art, the present invention has the following beneficial effects: In this invention, scenario information of a target scenario and device information corresponding to multiple candidate devices are obtained; wherein, the target scenario is a scenario that requires configuring a zero-output control system for a residential photovoltaic energy storage system; based on the scenario information, the target system architecture to be configured is determined; based on the target system architecture and all device information, multiple target devices that meet the determined system construction conditions are selected from all candidate devices; based on the target system architecture and all target devices, a zero-output control system corresponding to the residential photovoltaic energy storage system is constructed; wherein, the devices included in the zero-output control system communicate with each other based on a determined target communication protocol; after the zero-output control system is activated, the zero-output control system performs power adjustment operations according to the real-time operating data corresponding to the residential photovoltaic energy storage system, so that the residential photovoltaic energy storage system is in zero-output mode; wherein, the real-time operating data includes real-time load data and real-time energy storage data. As can be seen, implementing this invention can determine the required target system architecture based on the acquired target scenario information. Then, based on the target system architecture and the equipment information corresponding to all candidate devices, multiple target devices that meet the system construction conditions are selected. Based on the target system architecture and all target devices, a zero-output control system corresponding to the residential photovoltaic energy storage system is constructed. After the zero-output control system is activated, it adjusts the power according to the real-time operating data of the residential photovoltaic energy storage system to keep the system in zero-output mode. Through standardized equipment selection and protocol conversion, the zero-output control system can be compatible with equipment combinations from different brands. This improves the configuration flexibility and reliability of the zero-output control system for the residential photovoltaic energy storage system while dynamically adjusting the inverter output power according to the real-time load and energy storage status, ensuring zero power feed from the residential photovoltaic energy storage system to the grid. This improves the operational control flexibility and accuracy of the residential photovoltaic energy storage system, thereby enhancing system operational stability. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1This is a flowchart illustrating a configuration and control method for a residential photovoltaic energy storage system disclosed in an embodiment of the present invention; Figure 2 This is a flowchart illustrating another configuration and control method for a residential photovoltaic energy storage system disclosed in an embodiment of the present invention; Figure 3 This is a schematic diagram of the architecture of a zero-output control system disclosed in an embodiment of the present invention; Figure 4 This is a schematic diagram of another zero-output control system architecture disclosed in an embodiment of the present invention; Figure 5 This is a schematic diagram of the architecture of another zero-output control system disclosed in an embodiment of the present invention; Figure 6 This is a schematic diagram of the architecture of another zero-output control system disclosed in an embodiment of the present invention; Figure 7 This is a schematic diagram illustrating the effect of a configuration and control method for a residential photovoltaic energy storage system disclosed in an embodiment of the present invention; Figure 8 This is a schematic diagram illustrating the effect of a configuration and control method for a residential photovoltaic energy storage system disclosed in an embodiment of the present invention; Figure 9 This is a schematic diagram illustrating the effect of a configuration and control method for a residential photovoltaic energy storage system disclosed in an embodiment of the present invention; Figure 10 This is a schematic diagram of the configuration and control device for a residential photovoltaic energy storage system disclosed in an embodiment of the present invention; Figure 11 This is a schematic diagram of the configuration and control device for another residential photovoltaic energy storage system disclosed in an embodiment of the present invention. Detailed Implementation

[0025] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this invention are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, apparatus, product, or end that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or ends.

[0027] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0028] This invention discloses a configuration and control method and apparatus for a residential photovoltaic energy storage system. Based on the acquired scenario information, it determines the required target system architecture. Then, based on the target system architecture and the equipment information of all candidate devices, it selects multiple target devices that meet the system construction conditions. Based on the target system architecture and all target devices, it constructs a zero-output control system for the residential photovoltaic energy storage system. After activating the zero-output control system, it adjusts the power output according to the real-time operating data of the residential photovoltaic energy storage system to keep the system in zero-output mode. Through standardized equipment selection and protocol conversion, the zero-output control system is compatible with equipment combinations from different brands. This improves the configuration flexibility and reliability of the zero-output control system for the residential photovoltaic energy storage system while dynamically adjusting the inverter output power based on real-time load and energy storage status, ensuring zero power feed from the residential photovoltaic energy storage system to the grid. This improves the operational control flexibility and accuracy of the residential photovoltaic energy storage system, thereby enhancing system operational stability. Detailed descriptions follow.

[0029] Example 1 Please see Figure 1 , Figure 1 This is a schematic flowchart illustrating the configuration and control method of a residential photovoltaic energy storage system disclosed in an embodiment of the present invention. Figure 1 The described configuration and control method for a residential photovoltaic energy storage system can be applied to a configuration and control device for such a system. This device may include one of a smart terminal, a smart device, a smart system, and a server. The server may be a local server or a cloud server; this embodiment of the invention does not limit the specific implementation. Figure 1As shown, the configuration and control method of this residential photovoltaic energy storage system may include the following operations: 101. Obtain scene information of the target scene and device information corresponding to multiple candidate devices.

[0030] In this embodiment of the invention, the target scenario is a scenario where a zero-output control system needs to be configured for a residential photovoltaic energy storage system; for example, the target scenario can be a home scenario, a residential area management scenario, or other scenarios suitable for residential photovoltaic energy storage systems, and this embodiment of the invention does not limit the scope of the target scenario.

[0031] In this embodiment of the invention, optionally, the scene information of the target scene may include the scene scale information of the target scene and the photovoltaic storage configuration information corresponding to the household photovoltaic energy storage system; further optionally, the scene scale information of the target scene may be used to represent the size of the location where the target scene is located.

[0032] In this embodiment of the invention, optionally, the photovoltaic energy storage configuration information corresponding to the residential photovoltaic energy storage system can be used to indicate whether the residential photovoltaic energy storage system is equipped with a photovoltaic system and / or an energy storage system, and / or the usage type of the residential photovoltaic energy storage system; for example, the usage type can be a single-household usage type or a multi-household shared usage type, and this embodiment of the invention does not limit it.

[0033] 102. Based on the scenario information, determine the target system architecture that needs to be configured.

[0034] In this embodiment of the invention, the target system architecture determined in step 102 is the system architecture of the zero-output control system to be constructed.

[0035] 103. Based on the target system architecture and all device information, select multiple target devices from all candidate devices that meet the determined system construction conditions.

[0036] 104. Based on the target system architecture and all target devices, construct a zero-output control system corresponding to the residential photovoltaic energy storage system.

[0037] In this embodiment of the invention, the devices included in the zero-output control system communicate with each other based on a determined target communication protocol; optionally, the target communication protocol can be the communication protocol initially used by the target device, or it can be a common communication protocol after protocol conversion, and this embodiment of the invention does not limit it.

[0038] 105. After the zero-output control system is activated, the zero-output control system performs power adjustment operations based on the real-time operating data of the residential photovoltaic energy storage system to put the residential photovoltaic energy storage system into zero-output mode.

[0039] In this embodiment of the invention, the real-time operating data corresponding to the residential photovoltaic energy storage system may include the real-time load data and real-time energy storage data corresponding to the residential photovoltaic energy storage system; optionally, the real-time energy storage data may be the first real-time energy storage data corresponding to the residential photovoltaic energy storage system or the second real-time energy storage data corresponding to the zero-output control system, and this embodiment of the invention does not limit the data.

[0040] In this embodiment of the invention, after the household photovoltaic energy storage system is configured and the above-mentioned zero-output control system is enabled, if the power grid experiences an anomaly (such as a power outage), the household photovoltaic energy storage system can be prevented from feeding power to the power grid through the above-mentioned zero-output control system, thereby avoiding safety accidents such as electric shock, realizing the anti-islanding function, and improving the safety and reliability of the household photovoltaic energy storage system.

[0041] It is understandable that different regions have different requirements. For example, in the Philippines, the ERC (Energy Regulatory Commission) and DU (Distribution Utility) require residential photovoltaic energy storage systems to meet grid connection standards (such as IEEE 1547 / IEC 62116), thus imposing very strict requirements on anti-islanding functionality. Since hybrid (energy storage) inverters have functions such as EPS (Electric Power System), Backup, and Off-grid operation, they still need to have anti-islanding functionality even in a zero-output state.

[0042] As can be seen, the method described in the embodiments of the present invention can determine the target system architecture to be configured based on the scene information of the target scenario, and then select multiple target devices that meet the system construction conditions based on the target system architecture and the device information corresponding to all candidate devices. Based on the target system architecture and all target devices, a zero-output control system corresponding to the residential photovoltaic energy storage system is constructed. After the zero-output control system is activated, the zero-output control system adjusts the power according to the real-time operating data of the residential photovoltaic energy storage system to put the residential photovoltaic energy storage system in zero-output mode. Through standardized device selection and protocol conversion, the zero-output control system can be compatible with different brand combinations of equipment. This improves the configuration flexibility and reliability of the zero-output control system corresponding to the residential photovoltaic energy storage system, while realizing the dynamic adjustment of inverter output power according to real-time load and energy storage status, ensuring zero feed to the grid by the residential photovoltaic energy storage system, thereby improving the operational control flexibility and accuracy of the residential photovoltaic energy storage system and improving the system's operational stability.

[0043] In an optional embodiment, determining the target system architecture to be configured based on scenario information may include the following operations: Based on the scene scale information, determine the scene type corresponding to the target scene; Based on the scenario type, determine the corresponding system operation index range for the residential photovoltaic energy storage system; wherein, the system operation index range includes the load power range and / or the energy storage capacity demand range; Based on the system operation index range, determine the inverter configuration information required for the residential photovoltaic energy storage system; the inverter configuration information includes the number of inverters; when the number of inverters is greater than 1, the inverter configuration information also includes the inverter configuration relationship. Based on the inverter configuration information and the photovoltaic and energy storage configuration information, determine the target system architecture that needs to be configured.

[0044] Optionally, the target scenario can be one of the following: ordinary family type, medium and large residential type, or villa type. This embodiment of the invention does not limit the type.

[0045] Optionally, the inverter configuration relationship can be a master-slave relationship or a parallel relationship, which is not limited in this embodiment of the invention; when multiple inverters are connected in parallel and in a master-slave relationship, one inverter needs to be set as the master (responsible for collecting CT and electricity meter data and calculating power requirements), and the rest are slaves (receiving power limit instructions from the master). This embodiment of the invention is not limited in this embodiment of the invention.

[0046] For example, when the scenario type is a typical household, the load power range can be 2-5kW, and the energy storage capacity requirement range can be 3-8kWh, requiring only one inverter. When the scenario type is a medium-to-large residential building, the load power range can be 5-10kW, and the energy storage capacity requirement range can be 8-15kWh, requiring multiple inverters. The inverter configuration relationship between the multiple inverters can be configured as a master-slave relationship (e.g., 1 master inverter + 2 slave inverters). When the scenario type is a villa, the load power range can be greater than 10kW, and the energy storage capacity requirement range can be greater than 15kWh, requiring multiple inverters. The multiple inverters need to be managed uniformly, and the inverter configuration relationship between the multiple inverters can be configured as a parallel relationship. When the photovoltaic-energy storage configuration information indicates that the target scenario does not have an energy storage system, one additional inverter needs to be configured. This embodiment of the invention does not impose any limitations.

[0047] As can be seen, this optional embodiment can determine the scenario type corresponding to the target scenario based on the scenario scale information, then determine the corresponding system operation index range based on the scenario type, then determine the required inverter configuration information based on the system operation index range, and finally determine the target system architecture required for the zero-output control system by combining the inverter configuration information and the photovoltaic-storage configuration information. This can improve the accuracy of demand analysis for the target scenario and the accuracy of architecture determination for the zero-output control system, thereby facilitating the selection of equipment more suitable for the target scenario and building the zero-output control system more efficiently and accurately.

[0048] In this optional embodiment, determining the target system architecture to be configured based on the inverter configuration information and the photovoltaic-storage configuration information may include the following operations: When the photovoltaic-storage configuration information is used to indicate that a residential photovoltaic energy storage system is configured with both a photovoltaic system and an energy storage system, the required system architecture type is determined as the first architecture type. Based on the first architecture type and the inverter configuration information, the required first target system architecture is determined. The first target system architecture is one of the following: a single-unit system architecture, a master-slave parallel system architecture, and an external data management parallel system architecture. The inverters configured in the first target system architecture include energy storage inverters. When the photovoltaic-storage configuration information indicates that the residential photovoltaic energy storage system is configured with only a photovoltaic system but not an energy storage system, the required system architecture type is determined to be the second architecture type. Based on the second architecture type and the inverter configuration information, the required second target system architecture is determined. The second target system architecture is a non-energy storage and energy storage parallel system architecture, and the inverters configured in the non-energy storage and energy storage parallel system architecture include energy storage inverters and non-energy storage inverters. The target system architecture includes either a first target system architecture or a second target system architecture.

[0049] Optionally, when the number of inverters is equal to 1, the first target system architecture to be configured is determined to be a single-unit system architecture; wherein, the single-unit system architecture is configured with one inverter, one current transformer (CT), one anti-reverse current meter and a communication line. Optionally, when the number of inverters configured is greater than 1 and the number of inverters configured is less than or equal to the preset number, the first target system architecture to be configured is determined to be a master-slave parallel system architecture; wherein, the master-slave parallel system architecture is configured with the number of inverters configured, a current transformer, an anti-reverse current meter and a communication line, and the inverter configuration relationship between all inverters is a master-slave relationship. Optionally, when the number of inverters configured is greater than the preset number, the first target system architecture to be configured is determined to be an external data management parallel system architecture; wherein, the external data management parallel system architecture is configured with the number of inverters configured, a current transformer, an anti-reverse current meter, communication lines, and data management units corresponding to all inverters, and the inverter configuration relationship between all inverters is a parallel relationship.

[0050] Alternatively, the communication line can be an RS485 line, but this embodiment of the invention does not limit the specific type of line.

[0051] It can be understood that the zero-output control system may include an inverter and a zero-output control device, wherein the zero-output control device may include a current transformer, an anti-reverse current meter, and a communication line.

[0052] Optionally, the non-energy storage inverter can be a grid-connected inverter, and the energy storage inverter and the grid-connected inverter are respectively equipped with corresponding current transformers, anti-reverse current meters and communication lines, and are also equipped with energy storage batteries corresponding to the energy storage inverter. This embodiment of the invention does not limit the scope of the invention.

[0053] As can be seen, this optional embodiment can also determine the required system architecture type as a first architecture type when the residential photovoltaic energy storage system is configured with both a photovoltaic system and an energy storage system, in order to determine the required first target system architecture by combining the inverter configuration information; or, when the residential photovoltaic energy storage system is configured with only a photovoltaic system but not an energy storage system, it can determine the required system architecture type as a second architecture type, in order to determine the required second target system architecture by combining the inverter configuration information. This enables flexible matching of different zero-output control system architectures based on different photovoltaic energy storage configurations used by the residential photovoltaic energy storage system in the target scenario, thereby improving the adaptability of the zero-output control system architecture to the target scenario, improving the accuracy of the zero-output control system determination, and thus facilitating the subsequent improvement of the flexibility and accuracy of the residential photovoltaic energy storage system's operation and control in zero-output mode.

[0054] In an embodiment of the present invention, exemplarily, Figures 3-6 This is a schematic diagram of the architecture of various zero-output control systems disclosed in embodiments of the present invention. Specifically: When the zero-output control system is a standalone system architecture, the architecture formed by combining the zero-output control system with the residential photovoltaic energy storage system can be as follows: Figure 3 As shown: The architecture may include (1) a zero-output control device (CT + anti-reverse current meter, i.e. Figure 3The components include: (1) 0 output meter + RS485 communication line, (2) single inverter, (3) solar panel, (4) energy storage battery, (5) household load (general load + important load), and (6) mains power. The control logic for the power regulation operation corresponding to this architecture can be: the CT collects the load current, the anti-reverse current meter calculates the real-time power, transmits the data to the inverter via RS485, and the inverter adjusts the output power according to the data to ensure zero power supply to the mains. When the zero-output control system is in a master-slave parallel system architecture, the architecture formed by combining the zero-output control system with the residential photovoltaic energy storage system can be as follows: Figure 4 As shown: The architecture may include (1) a zero-output control device (CT + anti-reverse current meter + RS485 communication line), (2) 3 inverters (1 master and 2 slaves), (3) multiple sets of solar panels (assemblies AE), (4) multiple sets of energy storage batteries, (5) household load, and (6) mains power; The control logic of the power regulation operation corresponding to this architecture can be: the master collects the total load power through the CT / meter, calculates the target output power of each inverter, sends instructions to the slave through RS485, and the multiple machines coordinate to adjust to ensure that the total output power matches the load and there is zero power supply; When the zero-output control system is an external data management parallel system architecture, the architecture formed by combining the zero-output control system and the residential photovoltaic energy storage system can be as follows: Figure 5 As shown: The architecture may include (1) a zero-output control device (CT + anti-reverse meter + RS485 communication line), (2) an external data management unit, (3) multiple inverters, (4) multiple sets of solar panels / energy storage batteries, (5) household loads, and (6) mains power; The control logic of the power regulation operation corresponding to this architecture can be: the data management unit replaces the host function, centrally collects CT / meter data, uniformly calculates and sends power limit commands to all inverters, and monitors the system operation status at the same time, triggering protection when abnormal; When the zero-output control system is a parallel system architecture with and without energy storage, it can be achieved by retrofitting an existing grid-connected photovoltaic system (without energy storage) and adding a power conversion system (PCS) to achieve zero-output functionality. In this case, the architecture formed by combining the zero-output control system and the residential photovoltaic energy storage system can be as follows: Figure 6As shown: The architecture may include (1) two sets of zero-output control devices (CT1 / meter 1 + CT2 / meter 2 + RS485 communication line), (2) one grid-connected non-energy storage inverter, (3) one energy storage PCS (i.e., an energy storage inverter with PCS function), (4) solar panels (modules A - B), (5) energy storage batteries, (6) household loads, and (7) mains power; wherein, the control logic of the power regulation operation corresponding to the architecture can be: meter 1 monitors the output power of the grid-connected inverter, meter 2 monitors the charging and discharging power of the energy storage PCS (i.e., the energy storage inverter), the two devices transmit data to the corresponding equipment respectively, the grid-connected inverter adjusts the power generation, the energy storage PCS adjusts the charging and discharging state, and the two work together to ensure that the total power matches the load and there is zero power supply. The embodiments of the present invention are not limited.

[0055] Example 2 Please see Figure 2 , Figure 2 This is a schematic flowchart illustrating the configuration and control method of a residential photovoltaic energy storage system disclosed in an embodiment of the present invention. Figure 2 The described configuration and control method for a residential photovoltaic energy storage system can be applied to a configuration and control device for such a system. This device may include one of a smart terminal, a smart device, a smart system, and a server. The server may be a local server or a cloud server; this embodiment of the invention does not limit the specific implementation. Figure 2 As shown, the configuration and control method of this residential photovoltaic energy storage system may include the following operations: 201. Obtain scene information of the target scene and device information corresponding to multiple candidate devices.

[0056] In this embodiment of the invention, the target scenario is a scenario where a zero-output control system needs to be configured for a residential photovoltaic energy storage system; optionally, the equipment information corresponding to each candidate device may include one or more combinations of signal transmission method, cooperative mode configuration information, power regulation method, equipment rated specification information and safety certification information.

[0057] 202. Based on the scenario information, determine the target system architecture that needs to be configured.

[0058] 203. Based on the target system architecture, determine the device selection criteria corresponding to the target system architecture.

[0059] In this embodiment of the invention, the equipment filtering conditions include equipment type filtering conditions and equipment quantity filtering conditions; wherein, optionally, the equipment type filtering conditions may include at least one target equipment type; the equipment quantity filtering conditions may include the total number of equipment to be filtered and / or the number of equipment corresponding to each target equipment type in the equipment type filtering conditions, which is not limited in this embodiment of the invention.

[0060] 204. Determine the equipment matching conditions that match the target system architecture.

[0061] In this embodiment of the invention, the device matching conditions may include at least one matching sub-condition among communication matching conditions, power regulation matching conditions, current measurement matching conditions, mode matching conditions, and security authentication matching conditions. This embodiment of the invention does not limit the specific conditions.

[0062] 205. Based on all equipment information, select multiple target devices from all candidate devices that meet the equipment screening and matching conditions.

[0063] 206. Based on the target system architecture and all target devices, construct a zero-output control system corresponding to the residential photovoltaic energy storage system.

[0064] In this embodiment of the invention, the devices included in the zero-output control system communicate with each other based on a determined target communication protocol.

[0065] 207. After the zero-output control system is activated, the zero-output control system performs power adjustment operations based on the real-time operating data of the residential photovoltaic energy storage system to put the residential photovoltaic energy storage system into zero-output mode.

[0066] In this embodiment of the invention, the real-time operating data includes real-time load data and real-time energy storage data.

[0067] In this embodiment of the invention, for other detailed descriptions of steps 201-202 and steps 206-207, please refer to the detailed descriptions of steps 101-102 and steps 104-105 in Embodiment 1. These descriptions will not be repeated in this embodiment of the invention.

[0068] As can be seen, the method described in the embodiments of the present invention can determine the target system architecture to be configured based on the scene information of the target scenario, and then select multiple target devices that meet the system construction conditions based on the target system architecture and the device information corresponding to all candidate devices. Based on the target system architecture and all target devices, a zero-output control system corresponding to the residential photovoltaic energy storage system is constructed. After the zero-output control system is activated, the zero-output control system adjusts the power according to the real-time operating data of the residential photovoltaic energy storage system to put the residential photovoltaic energy storage system in zero-output mode. Through standardized device selection and protocol conversion, the zero-output control system can be compatible with different brand combinations of equipment. This improves the configuration flexibility and reliability of the zero-output control system corresponding to the residential photovoltaic energy storage system, while realizing the dynamic adjustment of inverter output power according to real-time load and energy storage status, ensuring zero feed to the grid by the residential photovoltaic energy storage system, thereby improving the operational control flexibility and accuracy of the residential photovoltaic energy storage system and improving the system's operational stability. Furthermore, it can determine the corresponding equipment screening conditions and equipment matching conditions that match the target system architecture based on the target system architecture, and then select multiple target devices that meet the equipment screening conditions and equipment matching conditions from all candidate devices. This enables the targeted determination of corresponding equipment screening conditions and equipment matching conditions for the system architecture of the zero-output control system, thereby improving the accuracy and flexibility of system equipment screening, and further improving the configuration flexibility and reliability of the zero-output control system.

[0069] In an optional embodiment, selecting multiple target devices that meet the device selection criteria and device matching criteria from all candidate devices based on all device information may include the following operations: Based on all device information, multiple preliminary screening device sets that meet the device type screening criteria are selected from all candidate devices; wherein each preliminary screening device set includes at least one preliminary screening device, and all preliminary screening devices included in the preliminary screening device set belong to the same target device type in the device type screening criteria; Based on the equipment matching criteria and all equipment information, the equipment matching degree corresponding to each determined equipment combination is evaluated; wherein, each equipment combination includes preliminary screening equipment belonging to multiple preliminary screening equipment sets, and each equipment combination meets the equipment quantity screening criteria. Select target device combinations from all device combinations whose device matching degree is higher than or equal to a preset matching degree threshold, and identify all the initially screened devices in the target device combinations as target devices.

[0070] As can be seen, this optional embodiment can first select a preliminary set of target devices that meet the device type selection criteria from all candidate devices. Then, based on the device matching criteria and all device information, it evaluates the device matching degree of each device combination that contains multiple target device types. This allows it to select target device combinations from all device combinations whose device matching degree is higher than or equal to a preset matching degree threshold, and to identify the devices in these target device combinations as target devices. Through multiple screenings, the selected target devices can meet the conditions of device type and quantity, as well as the matching degree conditions between device combinations. This further improves the accuracy and reliability of device screening, and consequently, it helps to further improve the configuration flexibility and reliability of the zero-output control system.

[0071] In this optional embodiment, optionally, evaluating the device matching degree corresponding to each determined device combination based on device matching conditions and all device information may include the following operations: For each identified device combination, evaluate the matching degree of the device combination with respect to each matching sub-condition based on each matching sub-condition and all device information; For each device combination, calculate the device matching degree corresponding to that device combination based on the matching degree corresponding to all matching sub-conditions; Among them, the matching degree corresponding to all matching sub-conditions includes at least one of communication matching degree, power regulation matching degree, current measurement matching degree, mode matching degree and security authentication matching degree; Among them, the communication matching degree is used to indicate the degree of matching between the target communication protocols used by all the preliminary screening devices in the equipment combination; the power regulation matching degree is used to indicate the degree of adaptation of the real-time power regulation function among the preliminary screening devices related to power regulation in the equipment combination; the current measurement matching degree is used to indicate the degree of adaptation of the real-time current measurement function among the preliminary screening devices related to current measurement in the equipment combination; the mode matching degree is used to indicate the degree of matching between the cooperative mode information configured by the inverter in the equipment combination and the cooperative mode requirements corresponding to the target system architecture; and the security certification matching degree is used to indicate the degree of matching between the security certification information of all the preliminary screening devices in the equipment combination and the preset security certification standard.

[0072] Optionally, for each device combination, the device matching degree corresponding to the device combination is calculated based on the matching degree corresponding to all matching sub-conditions. Specifically, this can be done by using a weighted summation method to calculate the device matching degree corresponding to the device combination based on the matching degree corresponding to each matching sub-condition and the corresponding preset weight; or, the lowest value among the matching degrees corresponding to all matching sub-conditions is determined as the device matching degree corresponding to the device combination. This embodiment of the invention does not impose any limitations.

[0073] As can be seen, this optional embodiment can also evaluate the matching degree of each device combination with respect to each matching sub-condition for each device combination, and then calculate the device matching degree corresponding to the device combination based on the matching degree corresponding to all matching sub-conditions of the device combination. This enables the evaluation of the matching degree of each device combination from aspects such as communication, power regulation, current measurement, mode and security authentication, which can improve the accuracy and comprehensiveness of the evaluation of the matching degree between the devices included in the device combination, thereby helping to improve the accuracy of determining the device matching degree and further improving the accuracy of device screening.

[0074] In this optional embodiment, optionally, for each determined device combination, evaluating the matching degree of the device combination with respect to each matching sub-condition based on each matching sub-condition and all device information may include the following operations: When the matching sub-condition is a communication matching condition, the first communication matching degree corresponding to the device combination is evaluated according to the communication matching condition; wherein, the first communication matching degree is used to represent the degree of matching between the communication protocols actually used by all the preliminary screening devices of the device combination; When the first communication matching degree is lower than the preset communication matching degree, it is determined whether the device combination meets the communication protocol conversion conditions; When it is determined that the device combination meets the communication protocol conversion conditions, the first communication matching degree of the device combination is increased to obtain the second communication matching degree, and the second communication matching degree is determined as the communication matching degree of the device combination. When the first communication matching degree is higher than or equal to the preset communication matching degree, or when it is determined that the device combination does not meet the communication protocol conversion conditions, the first communication matching degree is determined as the communication matching degree of the device combination.

[0075] For example, the communication protocols / signal types supported by the inverter may include Modbus TCP / RTU, RS485, pulse signals, or 0-10V / 4-20mA analog signals, and the embodiments of the present invention are not limited thereto.

[0076] For example, if the inverters and the main controller in the device combination have the same communication protocol (e.g., both support Modbus RTU), then the first communication matching degree corresponding to the device combination can be determined to be higher than or equal to the preset communication matching degree; otherwise, if the device combination includes inverters from multiple brands, and the combination can achieve protocol conversion through devices such as Modbus gateways (e.g., converting Wi-Fi signals to RS485 signals) to avoid communication interruption, then the second communication matching degree corresponding to the device combination can be determined, and the second communication matching degree is higher than or equal to the preset communication matching degree.

[0077] As can be seen, this optional embodiment can also, in terms of communication matching, first evaluate the first communication matching degree between the communication protocols actually used by the device locks of the device combination. If the first communication matching degree is too low, it is necessary to determine whether the device combination meets the communication protocol conversion condition. If the communication protocol conversion condition is met, the first communication matching degree of the device combination is increased to obtain a second communication matching degree, and the second communication matching degree is determined as the communication matching degree of the device combination. Otherwise, if the first communication matching degree is high enough, or if the device combination does not meet the communication protocol conversion condition, the first communication matching degree is determined as the communication matching degree of the device combination. This can improve the accuracy of the analysis of the matching degree of communication protocols between devices, thereby helping to improve the accuracy of the determination of the communication matching degree.

[0078] In this optional embodiment, optionally, for each determined device combination, evaluating the matching degree of the device combination with respect to each matching sub-condition based on each matching sub-condition and all device information may include the following operations: When the matching sub-condition is a power regulation matching condition, it is determined whether the inverter in the equipment combination supports the target power regulation function; wherein, the target power regulation function may include a real-time power setting function or a fast dynamic response function. When it is determined that the inverter in the equipment combination supports the target power regulation function, the power regulation matching degree corresponding to the equipment combination is determined as the first power regulation matching degree; wherein, the first power regulation matching degree is higher than or equal to the preset power regulation matching degree. When it is determined that the inverter in the equipment combination does not support the target power regulation function, determine whether the energy storage device in the equipment combination meets the preset charging and discharging conditions. When it is determined that the energy storage device in the equipment combination meets the preset charging and discharging conditions, the power regulation matching degree corresponding to the equipment combination is determined as the second power regulation matching degree; wherein, the second power regulation matching degree is higher than or equal to the preset power regulation matching degree; When it is determined that the energy storage device in the equipment combination does not meet the preset charging and discharging conditions, the power regulation matching degree corresponding to the equipment combination is determined to be the third power regulation matching degree; wherein, the third power regulation matching degree is lower than the preset power regulation matching degree; The power control matching degree corresponding to this equipment combination is one of the first power control matching degree, the second power control matching degree, and the third power control matching degree.

[0079] For example, the inverter needs to support real-time power setting (e.g., ±0.1kW adjustment accuracy) or fast dynamic response (e.g., response time ≤100ms) to ensure timely power adjustment. This embodiment of the invention does not impose any limitations. Furthermore, when there is a delay in inverter power adjustment, the power is compensated by charging and discharging the energy storage battery (e.g., when the load suddenly increases, the energy storage battery discharges to supplement the power gap) to avoid feeding power to the grid.

[0080] As can be seen, this optional embodiment can also comprehensively evaluate the power regulation matching degree of the equipment combination by judging the power regulation function of the inverter and the charging and discharging conditions of the energy storage device in sequence, which can improve the accuracy of determining the power regulation matching degree.

[0081] In this optional embodiment, optionally, for each determined device combination, evaluating the matching degree of the device combination with respect to each matching sub-condition based on each matching sub-condition and all device information may include the following operations: When the matching sub-condition is the current measurement matching condition, the CT level matching degree is determined according to the CT level of the current transformer in the equipment combination and the preset target CT level. The accuracy matching degree of the CT is determined based on the output data accuracy of the current transformers in the equipment combination and the preset first target accuracy level. Based on the CT grade matching degree and CT accuracy matching degree, determine the first current measurement matching degree corresponding to this equipment combination; The accuracy matching degree of the meter is determined based on the accuracy class of the anti-backflow meter in the device assembly and the preset target accuracy class. The electrical parameter matching degree of the meter is determined based on the update speed of the backflow prevention meter of the device combination and the preset target update speed. Based on the meter accuracy matching degree and the meter electrical parameter matching degree, determine the second current measurement matching degree corresponding to this equipment combination; The current measurement matching degree corresponding to the device combination is determined based on the first current measurement matching degree and the second current measurement matching degree.

[0082] For example, the current transformer (CT) can be selected to cover the maximum load current of a household (typically 100A~400A) and the output is in the mA range to ensure the accuracy of current measurement. This embodiment of the invention does not limit the scope of the invention.

[0083] For example, the electricity meter should preferably be a backflow prevention meter with an accuracy class of Class 0.5 / 0.5S (i.e., not lower than Class 1) and an electrical parameter update speed of ≤50ms to ensure that the power calculation error is ≤1% and to ensure the reliability of power calculation. This embodiment of the invention does not limit the scope of the invention.

[0084] As can be seen, this optional embodiment can also comprehensively evaluate the current measurement matching degree corresponding to the equipment combination by evaluating the CT level and accuracy of the current transformer, as well as the accuracy level and the update speed of the anti-reverse current meter and the meter's electrical parameters, thereby improving the accuracy of determining the current measurement matching degree.

[0085] In this optional embodiment, optionally, for each determined device combination, evaluating the matching degree of the device combination with respect to each matching sub-condition based on each matching sub-condition and all device information may include the following operations: When the matching sub-condition is a mode matching condition, the matching degree between the mode configuration functions supported by the inverters of the device combination and the inverter configuration relationship required by the target system architecture is evaluated to obtain the mode matching degree corresponding to the device combination.

[0086] For example, the mode matching degree is highest when the mode configuration function supported by the inverter includes the configuration mode corresponding to the inverter configuration relationship required by the target system architecture.

[0087] For example, the energy storage inverter needs to support master-slave collaborative control of multiple devices to ensure uniform power distribution during combined operation. This embodiment of the invention does not impose any limitations. Furthermore, the master device needs to have data priority processing capabilities to ensure the synchronization of power limiting commands issued to the slave devices (command delay ≤ 50ms) and avoid power outage caused by the superposition of power from multiple devices.

[0088] As can be seen, this optional embodiment can also obtain the corresponding mode matching degree by analyzing the matching degree between the mode configuration functions supported by the device combination and the inverter configuration relationship required by the target system architecture, which can improve the accuracy and efficiency of determining the mode matching degree.

[0089] In this optional embodiment, optionally, for each determined device combination, evaluating the matching degree of the device combination with respect to each matching sub-condition based on each matching sub-condition and all device information may include the following operations: When the matching sub-condition is a security certification matching condition, the equipment included in the equipment combination is evaluated to determine whether it meets the equipment standards corresponding to the target region, and the certification evaluation result is obtained. The target region can be the region where the target scenario is located, and the equipment standards can include regional zero-output standards or international certification standards. Based on the certification assessment results, determine the certification matching degree corresponding to the equipment combination; The degree of matching between the security protection functions corresponding to the equipment combination and the pre-set target security protection requirements is evaluated to obtain the security matching degree of the equipment combination. Based on the authentication matching degree and the security matching degree, determine the security authentication matching degree corresponding to the device combination.

[0090] For example, the device must comply with local zero-output standards (such as DOE Grid Code 2020 in the Philippines) and international certifications (such as UL 1741 SA, IEC 61850, IEC 62109) to ensure compliance and safety. This embodiment of the invention does not impose any limitations.

[0091] For example, the system should have an abnormal protection function. When the grid voltage fluctuates (e.g., exceeds 220V±10%) or the inverter malfunctions (e.g., overcurrent, overtemperature), the inverter output should be automatically cut off to avoid equipment damage or grid impact. This embodiment of the invention does not limit this.

[0092] As can be seen, this optional embodiment can also determine the certification matching degree of the device combination by evaluating whether the devices included in the device combination meet the device standards corresponding to the target region, and obtain the security matching degree of the device combination by evaluating the matching degree between the security protection functions of the device combination and the target security protection requirements. By combining the certification matching degree and the security matching degree, the security certification matching degree of the device combination can be evaluated, which can help improve the verification efficiency of the security reliability of the device combination, thereby improving the accuracy and efficiency of determining the security certification matching degree.

[0093] In this embodiment of the invention, the device parameters of the candidate device can be as shown in Tables 1 and 2 below, but this embodiment of the invention does not limit them.

[0094]

[0095]

[0096] In this embodiment of the invention, for example, after constructing the aforementioned zero-output control system, if the zero-output function is not enabled, the operational status of the target scenario can be referred to... Figure 7 , Figure 7 This is a schematic diagram illustrating the effect of a configuration and control method for a residential photovoltaic energy storage system disclosed in an embodiment of the present invention; wherein, as shown... Figure 7 As shown: Solar power generation capacity is 13.68kW, energy storage battery capacity is 62.6% (remaining energy 16.00kWh), household load power is 1.29kW, and excess power (13.68-1.29=12.39kW) is fed back to the grid (a permit to sell electricity is required). If the zero-output function is enabled (i.e., the zero-output control system is activated) and the scenario is a solar power generation + energy storage charging scenario, the operational status of this target scenario can be found in [reference needed]. Figure 8 , Figure 8 This is a schematic diagram illustrating the effect of a configuration and control method for a residential photovoltaic energy storage system disclosed in an embodiment of the present invention; wherein, as shown... Figure 8 As shown: Photovoltaic power 3.745kW, energy storage battery remaining power 61% (output power 2.405kW), household load power 1.364kW, photovoltaic power prioritizes load + energy storage charging (1.364 + 2.405 ≈ 3.745kW), zero power supply to grid (grid power 0.024kW, error ≤1% is normal). If the zero-output function is enabled and the scenario involves no solar power generation and only energy storage discharge, the operational status of this target scenario can be found in [reference needed]. Figure 9 , Figure 9 This is a schematic diagram illustrating the effect of a configuration and control method for a residential photovoltaic energy storage system disclosed in an embodiment of the present invention; wherein, as shown... Figure 9 As shown: Photovoltaic power 0.000kW (no sunlight), energy storage battery remaining power 98% (discharge power 0.740kW), household load power 0.752kW, energy storage discharge + a small amount of mains power (0.012kW) work together to meet the load, with zero power feed to the mains.

[0097] Example 3 Please see Figure 10 , Figure 10 This is a schematic diagram of the configuration and control device for a residential photovoltaic energy storage system disclosed in an embodiment of the present invention. Figure 10 The configuration and control device for the described residential photovoltaic energy storage system may include one of the following: a smart terminal, a smart device, a smart system, and a server. The server may be a local server or a cloud server; this embodiment of the invention does not limit the scope of the device. Figure 10 As shown, the configuration and control device for this residential photovoltaic energy storage system may include: The acquisition module 301 is used to acquire scene information of the target scene and device information corresponding to multiple candidate devices; wherein, the target scene is the scene that requires the configuration of a zero-output control system for the residential photovoltaic energy storage system; The determination module 302 is used to determine the target system architecture to be configured based on the scenario information; The filtering module 303 is used to filter out multiple target devices that meet the determined system construction conditions from all candidate devices based on the target system architecture and all device information; Module 304 is used to build a zero-output control system for a residential photovoltaic energy storage system based on the target system architecture and all target devices; wherein the devices included in the zero-output control system communicate with each other based on a determined target communication protocol; The power regulation module 305 is used to perform power regulation operations based on the real-time operating data of the residential photovoltaic energy storage system after the zero-output control system is activated, so as to put the residential photovoltaic energy storage system in zero-output mode; wherein, the real-time operating data includes real-time load data and real-time energy storage data.

[0098] As can be seen, the apparatus described in the embodiments of the present invention can determine the target system architecture to be configured based on the scene information of the target scenario, and then select multiple target devices that meet the system construction conditions based on the target system architecture and the device information corresponding to all candidate devices. Based on the target system architecture and all target devices, a zero-output control system corresponding to the residential photovoltaic energy storage system is constructed. After the zero-output control system is activated, the zero-output control system adjusts the power according to the real-time operating data of the residential photovoltaic energy storage system to put the residential photovoltaic energy storage system in zero-output mode. Through standardized device selection and protocol conversion, the zero-output control system can be compatible with different brand combinations of equipment. This improves the configuration flexibility and reliability of the zero-output control system corresponding to the residential photovoltaic energy storage system, while dynamically adjusting the inverter output power according to the real-time load and energy storage status to ensure zero feed to the grid from the residential photovoltaic energy storage system. This improves the operational control flexibility and accuracy of the residential photovoltaic energy storage system, thereby improving the system's operational stability.

[0099] In an optional embodiment, the scene information includes the scene scale information of the target scene and the photovoltaic storage configuration information corresponding to the residential photovoltaic energy storage system; The specific method by which the determining module 302 determines the target system architecture to be configured based on the scenario information may include: Based on the scene scale information, determine the scene type corresponding to the target scene; Based on the scenario type, determine the corresponding system operation index range for the residential photovoltaic energy storage system; wherein, the system operation index range includes the load power range and / or the energy storage capacity demand range; Based on the system operation index range, determine the inverter configuration information required for the residential photovoltaic energy storage system; the inverter configuration information includes the number of inverters; when the number of inverters is greater than 1, the inverter configuration information also includes the inverter configuration relationship. Based on the inverter configuration information and the photovoltaic and energy storage configuration information, determine the target system architecture that needs to be configured.

[0100] As can be seen, the apparatus described in this optional embodiment can determine the scene type corresponding to the target scene based on the scene scale information, then determine the corresponding system operation index range based on the scene type, then determine the required inverter configuration information based on the system operation index range, and then determine the target system architecture required for the zero-output control system by combining the inverter configuration information and the photovoltaic-storage configuration information. This can improve the accuracy of demand analysis for the target scene and the accuracy of architecture determination for the zero-output control system, thereby facilitating the selection of equipment more suitable for the target scene and building the zero-output control system more efficiently and accurately.

[0101] In this optional embodiment, the method by which the determining module 302 determines the specific target system architecture to be configured based on the inverter configuration information and the photovoltaic-storage configuration information may include: When the photovoltaic-storage configuration information is used to indicate that a residential photovoltaic energy storage system is configured with both a photovoltaic system and an energy storage system, the required system architecture type is determined as the first architecture type. Based on the first architecture type and the inverter configuration information, the required first target system architecture is determined. The first target system architecture is one of the following: a single-unit system architecture, a master-slave parallel system architecture, and an external data management parallel system architecture. The inverters configured in the first target system architecture include energy storage inverters. When the photovoltaic-storage configuration information indicates that the residential photovoltaic energy storage system is configured with only a photovoltaic system but not an energy storage system, the required system architecture type is determined to be the second architecture type. Based on the second architecture type and the inverter configuration information, the required second target system architecture is determined. The second target system architecture is a non-energy storage and energy storage parallel system architecture, and the inverters configured in the non-energy storage and energy storage parallel system architecture include energy storage inverters and non-energy storage inverters. The target system architecture includes either a first target system architecture or a second target system architecture.

[0102] As can be seen, the apparatus described in this optional embodiment can also determine the required system architecture type as a first architecture type when the residential photovoltaic energy storage system is configured with both a photovoltaic system and an energy storage system, in order to determine the required first target system architecture in combination with inverter configuration information; or, when the residential photovoltaic energy storage system is configured with only a photovoltaic system but not an energy storage system, it can determine the required system architecture type as a second architecture type, in order to determine the required second target system architecture in combination with inverter configuration information. This enables flexible matching of different zero-output control system architectures based on different photovoltaic energy storage configurations used by the residential photovoltaic energy storage system in the target scenario, thereby improving the adaptability of the zero-output control system architecture to the target scenario, improving the accuracy of the zero-output control system determination, and thus facilitating the subsequent improvement of the flexibility and accuracy of the residential photovoltaic energy storage system's operation and control in zero-output mode.

[0103] In an optional embodiment, the device information corresponding to each candidate device includes one or more combinations of signal transmission method, cooperative mode configuration information, power control method, device rated specification information and security authentication information; The specific method by which the screening module 303 selects multiple target devices that meet the determined system construction conditions from all candidate devices based on the target system architecture and all device information may include: Based on the target system architecture, determine the equipment selection criteria corresponding to the target system architecture; among which, the equipment selection criteria include equipment type selection criteria and equipment quantity selection criteria. Determine the device matching conditions that match the target system architecture; wherein, the device matching conditions include at least one matching sub-condition from the following categories: communication matching conditions, power regulation matching conditions, current measurement matching conditions, mode matching conditions, and security authentication matching conditions; Based on all device information, select multiple target devices from all candidate devices that meet the device selection criteria and device matching criteria.

[0104] As can be seen, the apparatus described in this optional embodiment can determine the corresponding equipment screening conditions and the equipment matching conditions that match the target system architecture according to the target system architecture, and then screen out multiple target devices that meet the equipment screening conditions and equipment matching conditions from all candidate devices. This enables the targeted determination of the corresponding equipment screening conditions and equipment matching conditions for the system architecture of the zero-output control system, thereby improving the accuracy and flexibility of system equipment screening, and further improving the configuration flexibility and configuration reliability of the zero-output control system.

[0105] In this optional embodiment, the specific method by which the filtering module 303 filters out multiple target devices that meet the device filtering conditions and device matching conditions from all candidate devices based on all device information may include: Based on all device information, multiple preliminary screening device sets that meet the device type screening criteria are selected from all candidate devices; wherein each preliminary screening device set includes at least one preliminary screening device, and all preliminary screening devices included in the preliminary screening device set belong to the same target device type in the device type screening criteria; Based on the equipment matching criteria and all equipment information, the equipment matching degree corresponding to each determined equipment combination is evaluated; wherein, each equipment combination includes preliminary screening equipment belonging to multiple preliminary screening equipment sets, and each equipment combination meets the equipment quantity screening criteria. Select target device combinations from all device combinations whose device matching degree is higher than or equal to a preset matching degree threshold, and identify all the initially screened devices in the target device combinations as target devices.

[0106] As can be seen, the apparatus described in this optional embodiment can first screen out a preliminary set of target devices that meet the device type screening conditions from all candidate devices, and then evaluate the device matching degree corresponding to each device combination containing multiple target device types based on device matching conditions and all device information, so as to screen out target device combinations with device matching degrees higher than or equal to a preset matching degree threshold from all device combinations, and determine the devices in the target device combination as target devices. Through multiple screening, the screened target devices can meet the conditions of device type and quantity, as well as the matching degree conditions between device combinations, thereby further improving the accuracy and reliability of device screening, and thus helping to further improve the configuration flexibility and configuration reliability of the zero-output control system.

[0107] In this optional embodiment, the specific method by which the screening module 303 evaluates the device matching degree corresponding to each determined device combination based on device matching conditions and all device information may include: For each identified device combination, evaluate the matching degree of the device combination with respect to each matching sub-condition based on each matching sub-condition and all device information; For each device combination, calculate the device matching degree corresponding to that device combination based on the matching degree corresponding to all matching sub-conditions; Among them, the matching degree corresponding to all matching sub-conditions includes at least one of communication matching degree, power regulation matching degree, current measurement matching degree, mode matching degree and security authentication matching degree; Among them, the communication matching degree is used to indicate the degree of matching between the target communication protocols used by all the preliminary screening devices in the equipment combination; the power regulation matching degree is used to indicate the degree of adaptation of the real-time power regulation function among the preliminary screening devices related to power regulation in the equipment combination; the current measurement matching degree is used to indicate the degree of adaptation of the real-time current measurement function among the preliminary screening devices related to current measurement in the equipment combination; the mode matching degree is used to indicate the degree of matching between the cooperative mode information configured by the inverter in the equipment combination and the cooperative mode requirements corresponding to the target system architecture; and the security certification matching degree is used to indicate the degree of matching between the security certification information of all the preliminary screening devices in the equipment combination and the preset security certification standard.

[0108] As can be seen, the apparatus described in this optional embodiment can also evaluate the matching degree of each device combination with respect to each matching sub-condition, and then calculate the device matching degree of the device combination based on the matching degree of all matching sub-conditions of the device combination. This enables the evaluation of the matching degree of each device combination from aspects such as communication, power regulation, current measurement, mode and security authentication, thereby improving the accuracy and comprehensiveness of the evaluation of the matching degree between the devices included in the device combination, and further improving the accuracy of determining the device matching degree, so as to further improve the accuracy of device screening.

[0109] In this optional embodiment, optionally, for each determined device combination, the filtering module 303 evaluates the matching degree of the device combination with respect to each matching sub-condition based on each matching sub-condition and all device information in a specific way, which may include: When the matching sub-condition is a communication matching condition, the first communication matching degree corresponding to the device combination is evaluated according to the communication matching condition; wherein, the first communication matching degree is used to represent the degree of matching between the communication protocols actually used by all the preliminary screening devices of the device combination; When the first communication matching degree is lower than the preset communication matching degree, it is determined whether the device combination meets the communication protocol conversion conditions; When it is determined that the device combination meets the communication protocol conversion conditions, the first communication matching degree of the device combination is increased to obtain the second communication matching degree, and the second communication matching degree is determined as the communication matching degree of the device combination. When the first communication matching degree is higher than or equal to the preset communication matching degree, or when it is determined that the device combination does not meet the communication protocol conversion conditions, the first communication matching degree is determined as the communication matching degree of the device combination.

[0110] As can be seen, the apparatus described in this optional embodiment can also, in terms of communication matching, first evaluate the first communication matching degree between the communication protocols actually used by the device locks of the device combination. If the first communication matching degree is too low, it is necessary to determine whether the device combination meets the communication protocol conversion condition. If the communication protocol conversion condition is met, the first communication matching degree of the device combination is increased to obtain a second communication matching degree, and the second communication matching degree is determined as the communication matching degree of the device combination. Otherwise, if the first communication matching degree is high enough, or if the device combination does not meet the communication protocol conversion condition, the first communication matching degree is determined as the communication matching degree of the device combination. This can improve the accuracy of the analysis of the matching degree of communication protocols between devices, thereby helping to improve the accuracy of the determination of the communication matching degree.

[0111] Example 4 Please see Figure 11 , Figure 11 This is a schematic diagram of the configuration and control device for another residential photovoltaic energy storage system disclosed in an embodiment of the present invention. Figure 11 As shown, the configuration and control device for this residential photovoltaic energy storage system may include: Memory 401 storing executable program code; Processor 402 coupled to memory 401; The processor 402 calls the executable program code stored in the memory 401 to execute some or all of the steps in the configuration and control method of the residential photovoltaic energy storage system described in Embodiment 1 or Embodiment 2 of the present invention.

[0112] Example 5 This invention discloses a computer storage medium storing computer instructions. When these computer instructions are invoked, they are used to execute some or all of the steps in the configuration and control method of the residential photovoltaic energy storage system described in Embodiment 1 or Embodiment 2 of this invention.

[0113] Example 6 This invention discloses a computer program product, which includes a non-transitory computer-readable storage medium storing a computer program, and the computer program is operable to cause a computer to perform some or all of the steps in the configuration and control method of the residential photovoltaic energy storage system described in Embodiment 1 or Embodiment 2.

[0114] The device embodiments described above are merely illustrative. The modules described as separate components may or may not be physically separate. The components shown as modules may or may not be physical modules; that is, they may be located in one place or distributed across multiple network modules. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0115] Through the detailed description of the above embodiments, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, including read-only memory (ROM), random access memory (RAM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), one-time programmable read-only memory (OTPROM), electrically-Erasable Programmable Read-Only Memory (EEPROM), compact disc read-only memory (CD-ROM) or other optical disc storage, disk storage, magnetic tape storage, or any other computer-readable medium that can be used to carry or store data.

[0116] Finally, it should be noted that the configuration and control method and device for a residential photovoltaic energy storage system disclosed in the embodiments of the present invention are merely preferred embodiments of the present invention and are only used to illustrate the technical solutions of the present invention, not to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A configuration and control method for a residential photovoltaic energy storage system, characterized in that, The method includes: Obtain scene information of the target scenario and device information corresponding to multiple candidate devices; wherein, the target scenario is a scenario in which a zero-output control system needs to be configured for a residential photovoltaic energy storage system; Based on the scenario information, determine the target system architecture that needs to be configured; Based on the target system architecture and all the device information, select multiple target devices that meet the determined system construction conditions from all the candidate devices; Based on the target system architecture and all the target devices, a zero-output control system corresponding to the residential photovoltaic energy storage system is constructed; wherein, the devices included in the zero-output control system communicate with each other based on a determined target communication protocol; After the zero-output control system is activated, the zero-output control system performs power adjustment operation based on the real-time operating data corresponding to the residential photovoltaic energy storage system, so that the residential photovoltaic energy storage system is in zero-output mode; wherein, the real-time operating data includes real-time load data and real-time energy storage data.

2. The configuration and control method for a residential photovoltaic energy storage system according to claim 1, characterized in that, The scene information includes the scene scale information of the target scene and the photovoltaic and energy storage configuration information corresponding to the household photovoltaic energy storage system; The step of determining the target system architecture to be configured based on the scenario information includes: Based on the scene scale information, determine the scene type corresponding to the target scene; Based on the scenario type, determine the system operation index range corresponding to the residential photovoltaic energy storage system; wherein, the system operation index range includes the load power range and / or the energy storage capacity demand range; Based on the system operation index range, determine the inverter configuration information required for the residential photovoltaic energy storage system; wherein, the inverter configuration information includes the number of inverters configured; when the number of inverters configured is greater than 1, the inverter configuration information also includes the inverter configuration relationship; Based on the inverter configuration information and the photovoltaic-storage configuration information, the target system architecture to be configured is determined.

3. The configuration and control method for a residential photovoltaic energy storage system according to claim 2, characterized in that, The step of determining the target system architecture to be configured based on the inverter configuration information and the photovoltaic-storage configuration information includes: When the photovoltaic-storage configuration information indicates that the residential photovoltaic energy storage system is configured with both a photovoltaic system and an energy storage system, the required system architecture type is determined to be a first architecture type. Based on the first architecture type and the inverter configuration information, a first target system architecture is determined. The first target system architecture is one of a single-unit system architecture, a master-slave parallel system architecture, and an external data management parallel system architecture. The inverter configured in the first target system architecture includes an energy storage inverter. When the photovoltaic-energy storage configuration information indicates that the residential photovoltaic energy storage system is configured with only a photovoltaic system but not an energy storage system, the required system architecture type is determined to be the second architecture type, and the required second target system architecture is determined according to the second architecture type and the inverter configuration information; wherein, the second target system architecture is a non-energy storage and energy storage parallel system architecture, and the inverters configured in the non-energy storage and energy storage parallel system architecture include energy storage inverters and non-energy storage inverters; The target system architecture includes either the first target system architecture or the second target system architecture.

4. The configuration and control method for a residential photovoltaic energy storage system according to any one of claims 1-3, characterized in that, The device information corresponding to each candidate device includes one or more combinations of signal transmission method, cooperative mode configuration information, power control method, device rated specification information, and security certification information; The step of selecting multiple target devices that meet the determined system construction conditions from all candidate devices based on the target system architecture and all device information includes: Based on the target system architecture, determine the device screening conditions corresponding to the target system architecture; wherein, the device screening conditions include device type screening conditions and device quantity screening conditions; Determine device matching conditions that match the target system architecture; wherein, the device matching conditions include at least one matching sub-condition from the following categories: communication matching conditions, power regulation matching conditions, current measurement matching conditions, mode matching conditions, and security authentication matching conditions; Based on all the device information, multiple target devices that meet the device screening criteria and the device matching criteria are selected from all the candidate devices.

5. The configuration and control method for a residential photovoltaic energy storage system according to claim 4, characterized in that, The step of selecting multiple target devices that meet the device selection criteria and the device matching criteria from all the candidate devices based on all the device information includes: Based on all the device information, multiple preliminary screening device sets that meet the device type screening conditions are selected from all the candidate devices; wherein each preliminary screening device set includes at least one preliminary screening device, and all the preliminary screening devices included in the preliminary screening device set belong to the same target device type in the device type screening conditions; Based on the device matching criteria and all the device information, the device matching degree corresponding to each determined device combination is evaluated; wherein, each device combination includes preliminary screening devices belonging to multiple preliminary screening device sets, and each device combination satisfies the device quantity screening criteria; From all the device combinations, select target device combinations with a device matching degree higher than or equal to a preset matching degree threshold, and determine all the initially screened devices in the target device combinations as target devices.

6. The configuration and control method for a residential photovoltaic energy storage system according to claim 5, characterized in that, The step of evaluating the device matching degree corresponding to each determined device combination based on the device matching conditions and all the device information includes: For each determined device combination, the matching degree of the device combination with respect to each matching sub-condition is evaluated based on each matching sub-condition and all the device information. For each of the device combinations, the device matching degree corresponding to the device combination is calculated based on the matching degree corresponding to all the matching sub-conditions. Among them, the matching degree corresponding to all the matching sub-conditions includes at least one of communication matching degree, power regulation matching degree, current measurement matching degree, mode matching degree and security authentication matching degree; Wherein, the communication matching degree is used to represent the degree of matching between the target communication protocols used by all the preliminary screening devices in the device combination; the power regulation matching degree is used to represent the degree of adaptation of the real-time power regulation function among the preliminary screening devices related to power regulation in the device combination; the current measurement matching degree is used to represent the degree of adaptation of the real-time current measurement function among the preliminary screening devices related to current measurement in the device combination; the mode matching degree is used to represent the degree of matching between the cooperative mode information configured by the inverter of the device combination and the cooperative mode requirements corresponding to the target system architecture; wherein, the security authentication matching degree is used to represent the degree of matching between the security authentication information of all the preliminary screening devices in the device combination and the preset security authentication standard.

7. The configuration and control method for a residential photovoltaic energy storage system according to claim 6, characterized in that, For each determined device combination, the step of evaluating the matching degree of the device combination with respect to each matching sub-condition based on each matching sub-condition and all the device information includes: When the matching sub-condition is the communication matching condition, the first communication matching degree corresponding to the device combination is evaluated according to the communication matching condition; wherein, the first communication matching degree is used to represent the degree of matching between the communication protocols actually used by all the preliminary screening devices of the device combination; When the first communication matching degree is lower than the preset communication matching degree, it is determined whether the device combination meets the communication protocol conversion conditions; When it is determined that the device combination meets the communication protocol conversion conditions, the first communication matching degree of the device combination is increased to obtain the second communication matching degree, and the second communication matching degree is determined as the communication matching degree of the device combination; When the first communication matching degree is higher than or equal to the preset communication matching degree, or when it is determined that the device combination does not meet the communication protocol conversion conditions, the first communication matching degree is determined as the communication matching degree of the device combination.

8. A configuration and control device for a residential photovoltaic energy storage system, characterized in that, The device includes: The acquisition module is used to acquire scene information of the target scene and device information corresponding to multiple candidate devices; wherein, the target scene is a scene that requires the configuration of a zero-output control system for a residential photovoltaic energy storage system; The determination module is used to determine the target system architecture to be configured based on the scenario information. The filtering module is used to filter out multiple target devices that meet the determined system construction conditions from all the candidate devices based on the target system architecture and all the device information; A construction module is used to construct a zero-output control system corresponding to the residential photovoltaic energy storage system based on the target system architecture and all the target devices; wherein, the devices included in the zero-output control system communicate with each other based on a determined target communication protocol; The power regulation module is used to enable the zero-output control system to perform power regulation operations based on the real-time operating data corresponding to the residential photovoltaic energy storage system after the zero-output control system is activated, so as to put the residential photovoltaic energy storage system in zero-output mode; wherein, the real-time operating data includes real-time load data and real-time energy storage data.

9. A configuration and control device for a residential photovoltaic energy storage system, characterized in that, The device includes: Memory containing executable program code; A processor coupled to the memory; The processor calls the executable program code stored in the memory to execute the configuration and control method of the residential photovoltaic energy storage system as described in any one of claims 1-7.

10. A computer storage medium, characterized in that, The computer storage medium stores computer instructions, which, when invoked, are used to execute the configuration and control method of the residential photovoltaic energy storage system as described in any one of claims 1-7.

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