WO2024082596A1 - 光伏设备分组方法、管理模块、光伏设备、系统及介质 - Google Patents

光伏设备分组方法、管理模块、光伏设备、系统及介质 Download PDF

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Publication number
WO2024082596A1
WO2024082596A1 PCT/CN2023/090777 CN2023090777W WO2024082596A1 WO 2024082596 A1 WO2024082596 A1 WO 2024082596A1 CN 2023090777 W CN2023090777 W CN 2023090777W WO 2024082596 A1 WO2024082596 A1 WO 2024082596A1
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WIPO (PCT)
Prior art keywords
photovoltaic
photovoltaic device
signal
instruction
devices
Prior art date
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Ceased
Application number
PCT/CN2023/090777
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English (en)
French (fr)
Inventor
禹红斌
周世高
吴彦伟
荣强
赵一
杨波
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Hoymiles Power Electronics Inc
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Hoymiles Power Electronics Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hoymiles Power Electronics Inc filed Critical Hoymiles Power Electronics Inc
Priority to EP23878596.8A priority Critical patent/EP4607739A4/en
Publication of WO2024082596A1 publication Critical patent/WO2024082596A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S50/00—Monitoring or testing of PV systems, e.g. load balancing or fault identification
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote monitoring or remote control of equipment in a power distribution network
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for AC mains or AC distribution networks
    • H02J3/38—Arrangements for feeding a single network from two or more generators or sources in parallel; Arrangements for feeding already energised networks from additional generators or sources in parallel
    • H02J3/381—Dispersed generators
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for AC mains or AC distribution networks
    • H02J3/38—Arrangements for feeding a single network from two or more generators or sources in parallel; Arrangements for feeding already energised networks from additional generators or sources in parallel
    • H02J3/46—Controlling the sharing of generated power between the generators, sources or networks
    • H02J3/466—Scheduling or selectively controlling the operation of the generators or sources, e.g. connecting or disconnecting generators to meet a demand
    • H02J3/472—Scheduling or selectively controlling the operation of the generators or sources, e.g. connecting or disconnecting generators to meet a demand for selectively connecting the AC sources in a particular order, e.g. sequential, alternating or subsets of sources
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2101/00—Supply or distribution of decentralised, dispersed or local electric power generation
    • H02J2101/20—Dispersed power generation using renewable energy sources
    • H02J2101/22—Solar energy
    • H02J2101/24—Photovoltaics
    • H02J2101/25—Photovoltaics involving maximum power point tracking control for photovoltaic sources
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy

Definitions

  • the present application relates to the field of photovoltaic power generation technology, and in particular to a photovoltaic device grouping method, a management module, a photovoltaic device, a system and a storage medium.
  • MLPE Mode level power electronics
  • one or more photovoltaic modules are equipped with an MLPE photovoltaic device, so there are many MLPE photovoltaic devices in the photovoltaic system.
  • MLPE photovoltaic devices there are many MLPE photovoltaic devices in the photovoltaic system.
  • the grouping of MLPE photovoltaic devices in the photovoltaic system is usually determined manually. Obviously, the process of determining the grouping information of each MLPE photovoltaic device in the related art method is too complicated, the operation time is too long, and it is prone to errors, and the labor cost is increased.
  • a photovoltaic device grouping method, apparatus, system, computer equipment, and storage medium are provided.
  • an embodiment of the present application proposes a photovoltaic device grouping method, which is applied to a management module in a photovoltaic system, wherein the photovoltaic system further includes a plurality of photovoltaic strings, wherein the photovoltaic strings include a plurality of photovoltaic devices connected in series and photovoltaic components respectively connected to each of the photovoltaic devices, and the method includes:
  • the photovoltaic devices are grouped based on the grouping information of the second photovoltaic devices, wherein the grouping information is determined by the second photovoltaic devices according to the receipt signals sent during the communication between the first photovoltaic devices and the management module.
  • determining the first photovoltaic device among the plurality of photovoltaic devices in each photovoltaic string based on the communication with each photovoltaic device comprises:
  • a first receipt signal sent by a photovoltaic device in response to the first signal instruction is received, and a first photovoltaic device among a plurality of photovoltaic devices is determined based on the first receipt signal, wherein the first receipt signal includes device information of the corresponding photovoltaic device.
  • the determining the first photovoltaic device among the plurality of photovoltaic devices in each photovoltaic string based on the communication with each photovoltaic device further comprises:
  • a second signal instruction is sent to each of the photovoltaic devices, where the second signal instruction includes a signal threshold for determining a second photovoltaic device located in the same photovoltaic string as the corresponding first photovoltaic device and grouping information thereof.
  • the grouping of each of the photovoltaic devices based on the grouping information of each of the second photovoltaic devices includes:
  • a third receipt signal sent by the second photovoltaic device in response to the third signal instruction is received, wherein the third receipt signal includes grouping information and/or identification information corresponding to the second photovoltaic device.
  • the method further comprises:
  • a fourth signal instruction is sent to each of the photovoltaic devices, where the fourth signal instruction is used to inform each of the second photovoltaic devices that they have been registered.
  • the first signal instruction is a state collection instruction, including identification information of a photovoltaic device, and the photovoltaic device corresponding to the identification information replies with a first receipt signal, wherein the device information includes a state identifier of the corresponding photovoltaic device, and the state identifier is used to identify whether the corresponding photovoltaic device is a second photovoltaic device; determining the first photovoltaic device among the plurality of photovoltaic devices based on the first receipt signal includes:
  • the first signal instruction is a first photovoltaic device search instruction
  • the photovoltaic device that successfully answers the first photovoltaic device search instruction replies with a first receipt signal. Based on the first receipt signal, it is determined that the corresponding photovoltaic device is the first photovoltaic device, and the device information includes identification information of the corresponding photovoltaic device.
  • the grouping information is determined by each of the second photovoltaic devices according to signal characteristics of each of the first receipt signals and a corresponding signal threshold.
  • the signal characteristic includes one of signal strength, signal impedance, and signal attenuation.
  • the grouping information is determined by the maximum difference value in the sorting of differences between the signal strengths of the first receipt signals of the second photovoltaic devices and the corresponding signal thresholds.
  • the grouping information is generated when each of the second photovoltaic devices receives the second signal instruction and determines that the identification information of the photovoltaic device carried in the received first receipt signal is consistent with the identification information of the photovoltaic device carried in the second signal instruction.
  • the second signal instruction is sent repeatedly, and the grouping information is determined by the second photovoltaic device according to signal characteristics of the second receipt signal sent by each of the first photovoltaic devices in response to the second signal instruction and a corresponding signal threshold.
  • the third signal instruction is a group information reporting instruction
  • the group information reporting instruction includes identification information of a designated second photovoltaic device, and is used to instruct the corresponding second photovoltaic device to report its group information.
  • the third signal instruction is a second photovoltaic device search instruction
  • the second photovoltaic device that successfully answers the second photovoltaic device search instruction reports its grouping information and/or identification information.
  • an embodiment of the present application proposes a management module, which is applied to a photovoltaic system, wherein the photovoltaic system further includes a plurality of photovoltaic strings, wherein the photovoltaic strings include a plurality of photovoltaic devices connected in series and photovoltaic components respectively connected to each of the photovoltaic devices, and the management module includes:
  • a first determination module configured to determine a first photovoltaic device among a plurality of photovoltaic devices in each photovoltaic string based on communication with each photovoltaic device, wherein the first photovoltaic device is configured to determine a second photovoltaic device located in the same photovoltaic string as the first photovoltaic device;
  • a grouping module is used to group each of the photovoltaic devices based on the grouping information of each of the second photovoltaic devices, wherein the grouping information is determined by each of the second photovoltaic devices according to a receipt signal sent during the communication between each of the first photovoltaic devices and the management module.
  • an embodiment of the present application proposes a photovoltaic device grouping method, which is applied to photovoltaic devices in a photovoltaic system, wherein the photovoltaic system includes a plurality of photovoltaic strings and a management module, wherein the photovoltaic strings include a plurality of photovoltaic devices and photovoltaic components respectively connected to each of the photovoltaic devices, and the method includes:
  • Each of the photovoltaic devices communicates with the management module to implement the first photovoltaic device among the multiple photovoltaic devices in each photovoltaic string.
  • the first photovoltaic device is used to determine a second photovoltaic device located in the same photovoltaic string as the first photovoltaic device;
  • Each of the second photovoltaic devices generates grouping information of each of the second photovoltaic devices according to a receipt signal sent during the communication between each of the first photovoltaic devices and the management module; wherein the grouping information is used to implement grouping of each of the photovoltaic devices.
  • each of the photovoltaic devices communicates with the management module to implement the determination of the first photovoltaic device among the plurality of photovoltaic devices in each of the photovoltaic strings, including:
  • Each of the photovoltaic devices receives a first signal instruction sent by the management module
  • the photovoltaic device in response to the first signal instruction sends a first receipt signal to the management module, where the first receipt signal is used to determine a first photovoltaic device among a plurality of photovoltaic devices, and the first receipt signal includes device information of the corresponding photovoltaic device.
  • each of the photovoltaic devices communicates with the management module to implement the determination of the first photovoltaic device among the plurality of photovoltaic devices in each of the photovoltaic strings, and further includes:
  • Each of the photovoltaic devices receives a second signal instruction sent by the management module, where the second signal instruction includes a signal threshold for determining a second photovoltaic device located in the same photovoltaic string as the corresponding first photovoltaic device and its grouping information.
  • the second photovoltaic device is determined based on a signal characteristic of the first receipt signal and a corresponding signal threshold.
  • the method further comprises:
  • Each of the photovoltaic devices receives a third signal instruction sent by the management module
  • the second photovoltaic device In response to the third signal instruction, the second photovoltaic device sends a third receipt signal to the management module, where the third receipt signal includes grouping information and/or identification information corresponding to the second photovoltaic device.
  • the first signal instruction is a status collection instruction, including identification information of the photovoltaic device, and the photovoltaic device corresponding to the identification information replies to the first receipt signal, and the device information includes a status identification of the corresponding photovoltaic device, and the status identification is used to identify whether the corresponding photovoltaic device is a second photovoltaic device.
  • the first signal instruction is a first photovoltaic device search instruction
  • the photovoltaic device that successfully answers the first photovoltaic device search instruction replies with a first receipt signal
  • the device information includes identification information of the corresponding photovoltaic device.
  • the grouping information is determined by each of the second photovoltaic devices according to signal characteristics of each of the first receipt signals and a corresponding signal threshold.
  • the signal characteristic includes one of signal strength, signal impedance, and signal attenuation.
  • the grouping information is determined by the maximum difference value in the sorting of differences between the signal strengths of the first receipt signals of the second photovoltaic devices and the corresponding signal thresholds.
  • the grouping information is generated when each of the second photovoltaic devices receives the second signal instruction and determines that the identification information of the photovoltaic device carried in the received first receipt signal is consistent with the identification information of the photovoltaic device carried in the second signal instruction.
  • the grouping information is determined by the second photovoltaic device according to signal characteristics of each second receipt signal and a corresponding signal threshold.
  • the third signal instruction is a group information reporting instruction
  • the group information reporting instruction includes identification information of a designated second photovoltaic device, and the corresponding second photovoltaic device reports its group information.
  • the third signal instruction is a second photovoltaic device search instruction
  • the second photovoltaic device that successfully answers the second photovoltaic device search instruction reports its grouping information and/or identification information.
  • an embodiment of the present application provides a photovoltaic device, which is applied to a photovoltaic system, wherein the photovoltaic system includes a plurality of photovoltaic strings and a management module, wherein the photovoltaic strings include a plurality of photovoltaic devices and photovoltaic components respectively connected to each of the photovoltaic devices, and wherein the photovoltaic devices Equipment includes:
  • a second determination module is used for communication between the photovoltaic device and the management module to achieve determination of a first photovoltaic device among the multiple optical devices in each photovoltaic string, wherein the first photovoltaic device is used to determine a second photovoltaic device located in the same photovoltaic string;
  • the third determination module is used to determine the grouping information of each of the second photovoltaic devices according to the receipt signal sent during the communication between each of the first photovoltaic devices and the management module; wherein the grouping information is used to implement the grouping of each of the photovoltaic devices.
  • an embodiment of the present application proposes a photovoltaic system, comprising a plurality of photovoltaic strings and a management module as described in the second aspect, wherein the photovoltaic strings comprise a plurality of photovoltaic devices as described in the fourth aspect and photovoltaic components respectively connected to each of the photovoltaic devices.
  • an embodiment of the present application proposes a computer-readable storage medium having a computer program stored thereon, and when the processor executes the computer program, the steps described in the first aspect or the third aspect are implemented.
  • FIG. 1 is a schematic structural diagram of a photovoltaic system in one embodiment.
  • FIG. 2 is a schematic structural diagram of a photovoltaic system in another embodiment.
  • FIG3 is a schematic flow chart of a method for grouping photovoltaic devices in one embodiment.
  • FIG. 4 is a schematic flow chart of a method for determining a first photovoltaic device in an embodiment.
  • FIG. 5 is a schematic diagram of a specific flow chart of a method for determining a first photovoltaic device in an embodiment.
  • FIG. 6 is a schematic diagram of a specific flow chart of a method for determining a first photovoltaic device in another embodiment.
  • FIG. 7 is a schematic diagram of a specific flow chart of a method for determining a first photovoltaic device in yet another embodiment.
  • FIG. 8 is a schematic diagram of a specific flow chart of a photovoltaic device grouping method in one embodiment.
  • FIG. 9 is a schematic diagram of a specific flow chart of a photovoltaic device grouping method in another embodiment.
  • FIG. 10 is a schematic diagram of the overall process of a method for grouping photovoltaic devices in one embodiment.
  • FIG. 11 is a schematic diagram of the overall flow of a method for determining a first photovoltaic device and a second photovoltaic device in another embodiment.
  • FIG. 12 is a schematic diagram of the overall process of a method for grouping photovoltaic devices in another embodiment.
  • FIG. 13 is a schematic diagram of the structure of a management module in one embodiment.
  • FIG. 14 is a schematic flow chart of a photovoltaic device grouping method in another embodiment.
  • FIG. 15 is a schematic diagram of the structure of a photovoltaic device in one embodiment.
  • FIG. 16 is a schematic diagram of the structure of a computer device in one embodiment.
  • FIG 1 is a structural schematic diagram of a photovoltaic system provided in an embodiment of the present application, wherein the photovoltaic system includes a plurality of photovoltaic strings 10 and a management module 20, wherein the photovoltaic string 10 includes a plurality of photovoltaic devices 101 connected in series (i.e., S1-Sm in Figure 1) and photovoltaic modules 102 respectively connected to each photovoltaic device 101, wherein the photovoltaic modules 102 are used to provide direct current, and the management module 20 communicates with each photovoltaic device 10 for grouping each photovoltaic device.
  • the photovoltaic system includes a plurality of photovoltaic strings 10 and a management module 20, wherein the photovoltaic string 10 includes a plurality of photovoltaic devices 101 connected in series (i.e., S1-Sm in Figure 1) and photovoltaic modules 102 respectively connected to each photovoltaic device 101, wherein the photovoltaic modules 102 are used to provide direct current, and the management module
  • the photovoltaic device 101 may be a switch, an optimizer, a micro inverter, a monitor, etc.
  • the management module 20 communicates with each photovoltaic device 101 via a power line carrier, for example.
  • FIG 2 is a structural schematic diagram of a photovoltaic system provided in another embodiment of the present application, wherein the photovoltaic system includes an inverter 30, a plurality of photovoltaic strings 10 connected to the inverter 30, and a management module 20, wherein the photovoltaic string 10 includes a plurality of photovoltaic devices 101 connected in series (i.e., S1-Sm in Figure 1) and photovoltaic modules 102 respectively connected to each photovoltaic device 101, the inverter 30 is used to invert the direct current provided by the photovoltaic module 102 into alternating current and output it, and the management module 20 communicates with each photovoltaic device 101, for example, via power line carrier communication.
  • the photovoltaic string 10 includes a plurality of photovoltaic devices 101 connected in series (i.e., S1-Sm in Figure 1) and photovoltaic modules 102 respectively connected to each photovoltaic device 101
  • the inverter 30 is used to invert the direct current provided by the photovoltaic
  • the photovoltaic device 101 may be a switch, an optimizer, a monitor, etc. Multiple photovoltaic devices in the same photovoltaic string are connected in series, and the multiple photovoltaic strings are respectively connected to multiple DC input ports of the inverter 30.
  • the management module 20 communicates with each photovoltaic device 101, for example, via a power line carrier.
  • the management module 20 is used to communicate with each photovoltaic device 101 and group each photovoltaic device 101 .
  • the management module 20 may be integrated into the inverter 30 .
  • a photovoltaic device grouping method is provided, and the method is applied to a management module in a photovoltaic system in FIG. 1 or FIG. 2 as an example for description, including the following steps:
  • S301 Determine a first photovoltaic device among a plurality of photovoltaic devices in each photovoltaic string based on communication with each photovoltaic device, wherein the first photovoltaic device is used to determine a second photovoltaic device located in the same photovoltaic string as the first photovoltaic device.
  • the first photovoltaic device may be any photovoltaic device in each photovoltaic string, for example, the first photovoltaic device in a photovoltaic string that communicates with the management module; the second photovoltaic device is a photovoltaic device that has grouping information and is not the first photovoltaic device.
  • the second photovoltaic devices During the communication between the management module and each first photovoltaic device, the second photovoltaic devices generate respective grouping information according to the signal characteristics of the receipt signal sent during the communication between the first photovoltaic device and the management module.
  • the signal characteristic may be one of signal strength, signal impedance, and signal attenuation.
  • S302 grouping the photovoltaic devices based on grouping information of the second photovoltaic devices, wherein the grouping information is determined by the second photovoltaic devices according to a receipt signal sent during communication between the first photovoltaic devices and the management module.
  • Each photovoltaic device is connected by a power line. Due to the influence of line impedance, the signal characteristics of the receipt signal sent by the first photovoltaic device and received by the second photovoltaic device located in the same photovoltaic string as the first photovoltaic device are different from the signal characteristics of the receipt signal sent by the first photovoltaic device and received by the second photovoltaic device located in a different photovoltaic string from the first photovoltaic device.
  • the value of the signal characteristics of the receipt signal sent by the first photovoltaic device and received by the second photovoltaic device located in the same photovoltaic string as the first photovoltaic device is greater than or less than (taking into account).
  • the signal characteristics may be signal strength, signal attenuation, signal impedance) and the value of the signal characteristics of the receipt signal sent by the first photovoltaic device received by the second photovoltaic device located in a different photovoltaic string from the first photovoltaic device, and the two have a large difference in magnitude. Therefore, grouping information can be generated based on the signal characteristics of the receipt signal.
  • a first photovoltaic device among multiple photovoltaic devices in each photovoltaic string is determined, the first photovoltaic device is used to determine a second photovoltaic device located in the same photovoltaic string, and then based on the grouping information of each second photovoltaic device, each photovoltaic device is grouped.
  • determining the first photovoltaic device among the plurality of photovoltaic devices in each photovoltaic string based on the communication with each photovoltaic device comprises the following steps:
  • S402 receiving a first receipt signal sent by a photovoltaic device in response to the first signal instruction, and determining a first photovoltaic device among a plurality of photovoltaic devices based on the first receipt signal, wherein the first receipt signal includes device information of the corresponding photovoltaic device.
  • the first receipt signal may include device information of the photovoltaic device itself, or may include device information of the first photovoltaic device in the photovoltaic string to which the photovoltaic device belongs.
  • the device information includes identification information and/or status identification, and the identification information may be a serial number and/or a logical address.
  • a first photovoltaic device among a plurality of photovoltaic devices is determined.
  • the first signal instruction may be a state collection instruction, including identification information of the photovoltaic device, and the photovoltaic device corresponding to the identification information replies with a first receipt signal, and the identification information is, for example, a serial number of the photovoltaic device.
  • the device information for example, includes a state identification of the corresponding photovoltaic device, and the state identification is used to indicate whether the corresponding photovoltaic device is the first photovoltaic device, the second photovoltaic device, or the photovoltaic device to be grouped.
  • the method specifically includes the following steps:
  • S501 Sending a status collection instruction to each photovoltaic device, and receiving a first receipt signal including a status identifier sent by the photovoltaic device in response to the status collection instruction.
  • the first receipt signal may be sent in the form of broadcast.
  • S502 determining whether the corresponding photovoltaic device is the second photovoltaic device according to the status identifier in the first receipt signal; if the status identifier indicates that the corresponding photovoltaic device is not the second photovoltaic device, determining that the corresponding photovoltaic device is the first photovoltaic device.
  • the first photovoltaic device among the plurality of photovoltaic devices can be determined according to the state identifier in the first receipt signal after receiving the first receipt signal.
  • the first receipt signal may also carry identification information of the first photovoltaic device in the photovoltaic string to which the photovoltaic device belongs, such as the serial number of the first photovoltaic device.
  • the type of the photovoltaic device can be determined while confirming the photovoltaic string to which it belongs.
  • the first signal instruction may be a first photovoltaic device search instruction
  • the photovoltaic device that successfully responds to the first photovoltaic device search instruction replies with a first receipt signal
  • the corresponding photovoltaic device is determined to be the first photovoltaic device based on the first receipt signal
  • the device information includes identification information of the corresponding photovoltaic device, such as the serial number of the photovoltaic device.
  • the method specifically includes the following steps:
  • S601 Sending a first photovoltaic device search instruction to each of the photovoltaic devices, and receiving a first receipt signal including identification information sent by the photovoltaic device in response to the first photovoltaic device search instruction.
  • the first receipt signal carries identification information of the photovoltaic device, such as a serial number of the photovoltaic device.
  • the first receipt signal may also carry identification information of the first photovoltaic device in the photovoltaic string to which the photovoltaic device belongs, such as the serial number of the first photovoltaic device.
  • the type of the photovoltaic device can be determined while confirming the photovoltaic string to which it belongs.
  • the photovoltaic devices respond to the first photovoltaic device search instruction by means of a competition, and only the photovoltaic devices that successfully answer the competition reply with a first receipt signal.
  • photovoltaic devices other than the first photovoltaic device and the second photovoltaic device respond to the first photovoltaic device search instruction by means of a competition.
  • the management module When the first receipt signal received by the management module is normal, it means that only one photovoltaic device has successfully responded.
  • the management module repeatedly sends the first photovoltaic device search instruction.
  • the management module and other photovoltaic devices record the identification information in the first receipt signal and the signal characteristics of the first receipt signal.
  • the first photovoltaic device search instruction is sent again or multiple times to the photovoltaic devices that have successfully replied to the first photovoltaic device search instruction, requesting the corresponding photovoltaic devices to resend the first receipt signal, so as to further improve the accuracy of grouping.
  • S602 Determine, based on the first receipt signal, that the corresponding photovoltaic device is a first photovoltaic device.
  • the device information includes identification information of the corresponding photovoltaic device. After receiving the first receipt signal, the management module determines that the photovoltaic device corresponding to the identification information is the first photovoltaic device of a photovoltaic string.
  • the management module sends the competition instruction to each photovoltaic device in the form of broadcast, for example.
  • the management module sends a response instruction to each of the photovoltaic devices. After receiving the response instruction and completing the random delay, all other photovoltaic devices except the first photovoltaic device and the second photovoltaic device detect whether the channel is idle. If the channel is idle, the response instruction is replied, and the response is successful. If the channel is busy, the response instruction is not replied, and the response fails.
  • the contest instruction may be sent repeatedly. If there is still no contest response, a second photovoltaic device search instruction is sent to the second photovoltaic device.
  • the second photovoltaic device search instruction will be described in detail later.
  • the determining the first photovoltaic device among the plurality of photovoltaic devices in each photovoltaic string based on the communication with each photovoltaic device further comprises the following steps:
  • S701 Sending a second signal instruction to each of the photovoltaic devices
  • the second signal instruction includes a signal threshold for determining a second photovoltaic device located in the same photovoltaic string as the corresponding first photovoltaic device and its grouping information.
  • the second signal instruction may be a first photovoltaic device registration instruction, which further includes identification information of the first photovoltaic device to inform the photovoltaic device to be registered as the first photovoltaic device.
  • the second signal instruction may be sent in a broadcast form.
  • the signal threshold is determined according to the signal characteristics of the received receipt signal.
  • the signal threshold value may be set by the management module according to the signal margin and the signal characteristic value of the receipt signal sent by the photovoltaic device.
  • the signal threshold value in the second signal instruction sent each time may be different.
  • the signal margin may be set according to actual conditions, and the signal threshold is the difference between the value of the signal characteristic of the receipt signal sent by the first photovoltaic device and received by the management module and the signal margin.
  • the size of the signal threshold may be set by the management module according to the signal margin and the value of the signal characteristic of the first receipt signal received by the management module.
  • the signal margin can be set according to actual conditions, and the signal threshold is the difference between the value of the signal characteristic of the first receipt signal sent by the first photovoltaic device and received by the management module and the signal margin.
  • the management module When the management module sends the second signal instruction, it notifies other photovoltaic devices except the first photovoltaic device based on the second signal instruction. Generate respective grouping information.
  • the grouping information is, for example, identification information of the first photovoltaic device located in the same photovoltaic string as the second photovoltaic device and stored in the second photovoltaic device.
  • Each other photovoltaic device confirms whether it is in the same photovoltaic string as the corresponding first photovoltaic device based on the signal characteristics of the received first receipt signal and the corresponding signal threshold, and updates the stored status identification and/or identification information of the first photovoltaic device (ie, grouping information).
  • other photovoltaic devices after receiving the second signal instruction, other photovoltaic devices compare the value of the signal characteristic of the most recently received first receipt signal with the corresponding signal threshold in the second signal instruction.
  • other photovoltaic devices after receiving the second signal instruction, other photovoltaic devices first determine whether the identification information of the photovoltaic device carried in the first receipt signal they received is consistent with the identification information of the photovoltaic device carried in the second signal instruction. If they are consistent, the value of the signal characteristic of the received first receipt signal is compared with the corresponding signal threshold; if they are inconsistent, it is considered that the first receipt signal is not sent by the first photovoltaic device specified by the second signal instruction, and no comparison is made. For example, it is determined whether the serial number of the photovoltaic device carried in the first receipt signal it received is the same as the serial number of the photovoltaic device carried in the second signal instruction.
  • the signal characteristic is signal strength
  • the signal strength of the received first receipt signal is compared with the corresponding signal threshold. If the signal strength of the received first receipt signal is greater than the signal threshold, it is confirmed that the corresponding first photovoltaic device is in the same photovoltaic string, and the stored status identification and/or identification information of the first photovoltaic device is updated.
  • the second photovoltaic device receives first receipt signals sent by multiple different first photovoltaic devices. If the second photovoltaic device determines that the signal strength of the first receipt signal it receives is greater than the corresponding signal threshold, it can sort the differences between the signal strengths of the first receipt signals sent by the multiple first photovoltaic devices and the corresponding signal threshold, select the first photovoltaic device with the largest difference that is located in the same photovoltaic string, and update the stored identification information of the first photovoltaic device to the identification information of the first photovoltaic device with the largest difference.
  • the second photovoltaic device receives first receipt signals sent by multiple different first photovoltaic devices. If the second photovoltaic device determines that the signal strength of the first receipt signal it receives is greater than the corresponding signal threshold, the signal strengths of the first receipt signals sent by the multiple different first photovoltaic devices received can be sorted, and the first photovoltaic device with the largest signal strength is selected to be located in the same photovoltaic string, and the identification information of the stored first photovoltaic device is updated to the identification information of the first photovoltaic device with the largest signal strength.
  • the method for determining the grouping information is substantially the same as the principle of the determination method in any of the above embodiments, and therefore will not be described in detail.
  • the management module receives the second receipt signal, which indicates that the corresponding photovoltaic device is successfully registered as the first photovoltaic device.
  • the second receipt signal includes device information of the corresponding photovoltaic device.
  • the management module and other photovoltaic devices record the identification information and signal characteristics of the photovoltaic device in the second receipt signal, and the management module repeats the second signal instruction again or multiple times.
  • Other photovoltaic devices can confirm whether they belong to the same photovoltaic string as the corresponding first photovoltaic device based on the signal characteristics of the received second receipt signal and its corresponding signal threshold, so as to prevent the problem of missed search and missed registration of devices and further improve the accuracy of grouping.
  • the method of confirming whether the received second receipt signal belongs to the same photovoltaic string as the corresponding first photovoltaic device based on the signal characteristics of the received second receipt signal and its corresponding signal threshold is the same as the method of confirming based on the signal characteristics of the first receipt signal and its corresponding signal threshold, so it will not be repeated here.
  • the grouping of each of the photovoltaic devices based on the grouping information of each of the second photovoltaic devices includes the following steps:
  • S802 Receive a third receipt signal sent by the second photovoltaic device in response to the third signal instruction.
  • the third receipt signal includes grouping information and/or identification information corresponding to the second photovoltaic device.
  • the management module sends the third signal instruction in a broadcast form in sequence, for example, wherein the third signal instruction is a group information reporting instruction.
  • the third signal instruction includes identification information of a specified second photovoltaic device, which is used to instruct the corresponding second photovoltaic device to report its group information, and the group information is the identification information of the first photovoltaic device of the photovoltaic string to which it belongs.
  • the management module sends the third signal instruction in the form of broadcast, for example.
  • the third signal instruction here is a second photovoltaic device search instruction, and all unregistered second photovoltaic devices participate in the competition.
  • the second photovoltaic device search instruction includes the identification information of the first photovoltaic device. Only unregistered second photovoltaic devices in the same photovoltaic string as the first photovoltaic device participate in the competition. At this time, the search range of the second photovoltaic device is narrowed to one photovoltaic string, which greatly narrows the search range and improves the search efficiency of the second photovoltaic device. At this time, the second photovoltaic device only needs to report its identification information, such as the serial number, and the management module determines that it is the same photovoltaic string as the first photovoltaic device.
  • a notification instruction may be sent in the form of a broadcast, the notification instruction includes the identification information of the first photovoltaic device, and the notification instruction is used to notify the second photovoltaic device. Only the second photovoltaic device in the same group string as the first photovoltaic device in the notification instruction will respond to the second photovoltaic device search instruction sent later. At this time, the second photovoltaic device search instruction does not need to carry the identification information of the first photovoltaic device. Similarly, the search range of the second photovoltaic device is narrowed to one photovoltaic string, which greatly narrows the search range and improves the search efficiency of the second photovoltaic device.
  • the management module if the management module does not receive the third receipt signal, it repeatedly sends the second photovoltaic device search instruction. If the management module does not receive the third receipt signal for multiple times, it stops sending the second photovoltaic device search instruction and the second photovoltaic device search ends.
  • the management module implements grouping of the photovoltaic devices based on the grouping information corresponding to the second photovoltaic devices.
  • the method further includes:
  • S901 Sending a fourth signal instruction to each of the photovoltaic devices
  • the fourth signal instruction includes identification information of the second photovoltaic device, and the fourth signal instruction is used to inform that the corresponding second photovoltaic device has been registered.
  • the registered second photovoltaic device no longer responds to the second photovoltaic device search instruction subsequently.
  • S902 Receive a fourth receipt signal sent by the second photovoltaic device in response to the fourth signal instruction.
  • step S902 may be omitted, and in this case, the fourth signal instruction may be sent to the second photovoltaic device repeatedly.
  • the first signal instruction when the first signal instruction is a state collection instruction, the first signal instruction or the second signal instruction or the third signal instruction or the fourth signal instruction includes a logical address allocated to the corresponding photovoltaic device to realize networking of the photovoltaic device.
  • the second signal instruction and the fourth signal instruction include logical addresses allocated to corresponding photovoltaic devices to implement networking of photovoltaic devices.
  • the networking of all photovoltaic devices may be completed first, and then the photovoltaic devices may be grouped according to the above grouping method.
  • the grouping and networking of photovoltaic devices may be performed interactively, and the networking of photovoltaic devices may be achieved while grouping.
  • the overall flow chart of the photovoltaic equipment grouping method is shown in FIG10 , and includes the following steps:
  • the serial number mentioned here can be the MAC address of the photovoltaic device, which is entered through the installation assistant APP and then sent to the management module by the installation assistant APP.
  • the management module selects the photovoltaic device Mi to send a first signal instruction
  • the first signal instruction described here is a state collection instruction.
  • the photovoltaic devices Mi here may be numbered in the order of the serial numbers input by the user. For example, if the user inputs the serial numbers "1x, bx, ", then the photovoltaic device with the serial number 1x is M1, the photovoltaic device with the serial number bx is M2, and so on.
  • the photovoltaic device Mi sends a first receipt signal
  • the photovoltaic device Mi will send a first receipt signal to the management module and other photovoltaic devices.
  • step S1004 the management module determines whether the photovoltaic device Mi is the second photovoltaic device. If not, the photovoltaic device Mi is determined as the first photovoltaic device of a photovoltaic string and the process proceeds to step S1005. If yes, the process proceeds to step S1008.
  • the management module and other photovoltaic devices record the identification information of the photovoltaic device Mi carried in the first receipt signal sent by the photovoltaic device Mi and the signal characteristics of the received first receipt signal.
  • the other photovoltaic devices are photovoltaic devices other than the first photovoltaic device.
  • S1005 The management module sends a second signal instruction
  • the second signal instruction is a first photovoltaic device registration instruction, and the second signal instruction includes identification information of the photovoltaic device Mi and a signal threshold value, and the identification information is, for example, a serial number of the photovoltaic device Mi.
  • Each other photovoltaic device confirms whether it is in the same photovoltaic string as the photovoltaic device Mi according to the signal characteristics of the received first receipt signal and the corresponding signal threshold, and updates the stored state identification and identification information of the first photovoltaic device.
  • Each other photovoltaic device is a photovoltaic device other than the first photovoltaic device.
  • the photovoltaic device Mi sends a second receipt signal
  • the second receipt signal is used for the photovoltaic device Mi to send confirmation information to the management module to confirm that it has received the second signal instruction.
  • the management module receives the second receipt signal indicating that the photovoltaic device Mi has completed registration, and the photovoltaic device Mi is registered as the first photovoltaic device.
  • the second receipt signal includes identification information of the photovoltaic device Mi, such as the serial number of the photovoltaic device Mi.
  • n is the number of photovoltaic devices in the photovoltaic system.
  • the management module sends a third signal instruction to the second photovoltaic device
  • the third signal instruction is a group information reporting instruction, and the third signal instruction includes identification information of a specified second photovoltaic device, and is used to instruct the corresponding second photovoltaic device to report its group information.
  • the second photovoltaic device sends a third receipt signal including grouping information
  • the second photovoltaic device specified in step S1009 sends a third receipt signal containing its grouping information, and the third receipt signal includes identification information of the first photovoltaic device belonging to the same group string as the second photovoltaic device, indicating that the second photovoltaic device and the first photovoltaic device are located in the same photovoltaic group string.
  • step S1004 if the management module determines that the photovoltaic device Mi is the second photovoltaic device, it directly enters step S1009 to report the grouping information of the second photovoltaic device. After completion, it determines whether all photovoltaic devices have reported the grouping information. If not, it returns to step S1002 and repeats the cycle until all photovoltaic devices have completed registration and grouping.
  • the method further comprises:
  • the management module sends a fourth signal instruction to the second photovoltaic device
  • the management module sends a fourth signal instruction to the second photovoltaic device in turn to inform that the corresponding second photovoltaic device has been registered.
  • the fourth signal instruction includes identification information of the second photovoltaic device, and the identification information includes, for example, the serial number of the second photovoltaic device.
  • the identification information further includes a logical address allocated by the management module to the corresponding second photovoltaic device, which is used to implement device networking.
  • the corresponding second photovoltaic device sends a fourth receipt signal.
  • the step of the second photovoltaic device sending the fourth receipt signal may be omitted.
  • the fourth signal instruction may be sent to the second photovoltaic device repeatedly to ensure that the logical address is assigned to the second photovoltaic device and the registration is successful.
  • the overall flow chart of the photovoltaic equipment grouping method is shown in FIG11 , and includes the following steps:
  • the management module sends a competition instruction
  • the photovoltaic devices to be grouped are other photovoltaic devices except the first photovoltaic device and the second photovoltaic device. After receiving the competition instruction and completing the random delay, it detects whether the channel is idle. If the channel is idle, it replies to the competition instruction and the answer is successful. If the channel is busy, it does not reply to the competition instruction and the answer fails.
  • step S1103 The management module determines whether there is a quiz response. If yes, it proceeds to step S1104; otherwise, it proceeds to step S1109;
  • S1104 The management module sends a first signal instruction
  • the first signal instruction is a first photovoltaic device search instruction
  • the photovoltaic device that successfully answers the competition instruction answers after receiving the first photovoltaic device search instruction.
  • step S1104 After steps S1101 to S1103, when performing step S1104, the search range of the first photovoltaic device can be greatly narrowed, thereby improving the efficiency of device search and grouping.
  • S1105 The photovoltaic device that successfully answers the question replies with the first receipt signal
  • the management module and other photovoltaic devices record the identification information in the first receipt signal and the signal characteristics of the first receipt signal.
  • the management module determines the photovoltaic device that successfully replies to the first receipt signal as the first photovoltaic device in the photovoltaic string where the photovoltaic device is located.
  • the photovoltaic device that successfully answers each time is located in a different photovoltaic string, for example.
  • S1106 The management module sends a second signal instruction
  • the other photovoltaic devices After receiving the second signal instruction, the other photovoltaic devices confirm whether they are in the same photovoltaic string as the photovoltaic device that successfully answered the question based on the signal characteristics of the received first receipt signal and the corresponding signal threshold, and update the stored state identification and/or identification information of the first photovoltaic device;
  • the photovoltaic device that successfully answers the question is the first photovoltaic device confirmed in step S1105.
  • S1108 The photovoltaic device that successfully answers sends a second receipt signal
  • the photovoltaic device that successfully answers the question is the first photovoltaic device confirmed in step S1105.
  • a first photovoltaic device and a second photovoltaic device among a plurality of photovoltaic devices are determined.
  • S1109 The management module sends a third signal instruction
  • the third signal instruction is a second photovoltaic device search instruction.
  • the management module sends the second photovoltaic device search instruction to each photovoltaic device in the form of broadcast, for example, and all unregistered second photovoltaic devices participate in the competition.
  • the second photovoltaic device search instruction includes the identification information of the first photovoltaic device, and only unregistered second photovoltaic devices located in the same photovoltaic string as the first photovoltaic device participate in the competition. At this time, the search range of the second photovoltaic device is narrowed to one photovoltaic string, which greatly narrows the search range and improves the search efficiency of the second photovoltaic device.
  • a notification instruction may be sent in the form of a broadcast, the notification instruction includes the identification information of the first photovoltaic device, the notification instruction is used to notify the second photovoltaic device, and the second photovoltaic device search instruction sent later will only respond to the second photovoltaic device in the same group string as the first photovoltaic device in the notification instruction.
  • the second photovoltaic device search instruction does not need to carry the identification information of the first photovoltaic device.
  • the second photovoltaic device sends a third receipt signal including grouping information and/or identification information;
  • step S1111 The management module determines whether the third receipt signal is received, if so, proceeds to step S1112; if not, proceeds to step S1114;
  • the management module sends a fourth signal instruction to the second photovoltaic device
  • the second photovoltaic device registration instruction is used to inform the second photovoltaic device that it has been registered, and subsequently the registered second photovoltaic device no longer responds to the second photovoltaic device search instruction.
  • step S1113 may be omitted.
  • step S1114 The management module determines whether the third receipt signal has not been received for multiple times. If not, the process proceeds to step S1109; if yes, the search ends, and all photovoltaic devices are registered and grouped.
  • the number of times that the management module fails to receive the third receipt signal can be set according to actual conditions.
  • steps S1101 to S1103 may be omitted, and the photovoltaic devices to be grouped respond to the first signal instruction in step S1104.
  • the grouping information of the second photovoltaic devices is reported and registered.
  • the reporting of the grouping information of the second photovoltaic device and the registration of the second photovoltaic device of each photovoltaic string may be performed after the search and registration of the first photovoltaic device of each photovoltaic string are completed.
  • the present application provides a photovoltaic equipment management module, which is applied to the photovoltaic system shown in FIG. 1 or FIG. 2 , and the management module includes:
  • a first determination module 1301 is used to determine a first photovoltaic device among multiple photovoltaic devices in each photovoltaic string based on communication with each photovoltaic device, where the first photovoltaic device is used to determine a second photovoltaic device located in the same photovoltaic string as the first photovoltaic device;
  • the grouping module 1302 is used to group the photovoltaic devices based on the grouping information of the second photovoltaic devices, wherein the grouping information is determined by the second photovoltaic devices according to the receipt signals sent by the first photovoltaic devices during the communication process with the management module.
  • the first photovoltaic device among the multiple photovoltaic devices in each photovoltaic string is determined, and the photovoltaic devices are grouped based on the grouping information of each second photovoltaic device.
  • the first determining module is specifically configured to:
  • a first receipt signal sent by a photovoltaic device in response to the first signal instruction is received, and a first photovoltaic device among a plurality of photovoltaic devices is determined based on the first receipt signal, wherein the first receipt signal includes device information of the corresponding photovoltaic device.
  • the first determining module is further configured to:
  • the second signal instruction including a signal for determining a position of the photovoltaic device corresponding to the first photovoltaic device.
  • the grouping module is used to:
  • a third receipt signal sent by the second photovoltaic device in response to the third signal instruction is received, wherein the third receipt signal includes grouping information and/or identification information corresponding to the second photovoltaic device.
  • the grouping module is further used for:
  • a fourth signal instruction is sent to each of the photovoltaic devices, where the fourth signal instruction is used to inform each of the second photovoltaic devices that they have been registered.
  • the first signal instruction is a state collection instruction, including identification information of the photovoltaic device, and the photovoltaic device corresponding to the identification information replies with a first receipt signal, the device information includes a state identifier of the corresponding photovoltaic device, and the state identifier is used to identify whether the corresponding photovoltaic device is the second photovoltaic device; the first determination module is further specifically used to:
  • the first signal instruction is a first photovoltaic device search instruction
  • the photovoltaic device that successfully answers the first photovoltaic device search instruction replies with a first receipt signal.
  • the first determination module determines that the corresponding photovoltaic device is the first photovoltaic device based on the first receipt signal, and the device information includes identification information of the corresponding photovoltaic device.
  • the grouping information is determined by each of the second photovoltaic devices according to a signal characteristic of each of the first receipt signals and the corresponding signal threshold.
  • the signal characteristic includes one of signal strength, signal impedance, and signal attenuation.
  • the grouping information is determined by the maximum difference value in the sorting of differences between the signal strengths of the first receipt signals of the second photovoltaic devices and the corresponding signal thresholds.
  • the grouping information is generated when each of the second photovoltaic devices receives the second signal instruction and determines that the identification information of the photovoltaic device carried in the received first receipt signal is consistent with the identification information of the photovoltaic device carried in the second signal instruction.
  • the second signal instruction is repeatedly sent, and the grouping information is determined by the second photovoltaic device based on the signal characteristics of the second receipt signal sent by each of the first photovoltaic devices in response to the second signal instruction and the corresponding signal threshold.
  • the third signal instruction is a group information reporting instruction
  • the group information reporting instruction includes identification information of a designated second photovoltaic device, and is used to instruct the corresponding second photovoltaic device to report its group information.
  • the third signal instruction is a second photovoltaic device search instruction
  • the second photovoltaic device that successfully answers the second photovoltaic device search instruction reports its grouping information and/or identification information.
  • Each module in the above photovoltaic equipment management module can be implemented in whole or in part by software, hardware and a combination thereof.
  • the above modules can be embedded in or independent of the processor in the computer device in the form of hardware, or can be stored in the memory of the computer device in the form of software, so that the processor can call and execute the operations corresponding to the above modules.
  • a method for grouping photovoltaic devices is provided, and the method is described by taking the photovoltaic devices in the photovoltaic system in FIG. 1 or FIG. 2 as an example, and includes the following steps:
  • Each of the photovoltaic devices communicates with the management module to determine a first photovoltaic device among a plurality of photovoltaic devices in each photovoltaic string, wherein the first photovoltaic device is used to determine a second photovoltaic device located in the same photovoltaic string as the first photovoltaic device;
  • Each of the second photovoltaic devices sends a receipt message during the communication between each of the first photovoltaic devices and the management module. number, and generates grouping information of each of the second photovoltaic devices; wherein the grouping information is used to implement the grouping of each of the photovoltaic devices.
  • each of the photovoltaic devices communicates with the management module to determine the first photovoltaic device among the multiple photovoltaic devices in each photovoltaic string, and each of the second photovoltaic devices generates grouping information of each of the second photovoltaic devices according to the signal characteristics of the receipt signal sent during the communication between each of the first photovoltaic devices and the management module.
  • each of the photovoltaic devices communicates with the management module to implement the determination of the first photovoltaic device among the plurality of photovoltaic devices in each of the photovoltaic strings, including:
  • Each of the photovoltaic devices receives a first signal instruction sent by the management module
  • the photovoltaic device in response to the first signal instruction sends a first receipt signal to the management module, the first receipt signal is used to determine a first photovoltaic device among a plurality of photovoltaic devices, and the first receipt signal includes device information of the corresponding photovoltaic device.
  • each of the photovoltaic devices communicates with the management module to implement the determination of the first photovoltaic device among the plurality of photovoltaic devices in each of the photovoltaic strings, and further includes:
  • Each of the photovoltaic devices receives a second signal instruction sent by the management module, and each of the photovoltaic devices receives a second signal instruction sent by the management module, wherein the second signal instruction includes a signal threshold for determining a second photovoltaic device located in the same photovoltaic string as the corresponding first photovoltaic device and its grouping information.
  • the second photovoltaic device is determined based on a signal characteristic of the first receipt signal and a corresponding signal threshold.
  • the method further comprises:
  • Each of the second photovoltaic devices receives a third signal instruction sent by the management module
  • the second photovoltaic device In response to the third signal instruction, the second photovoltaic device sends a third receipt signal to the management module, where the third receipt signal includes grouping information and/or identification information corresponding to the second photovoltaic device.
  • the first signal instruction is a status collection instruction, including identification information of the photovoltaic device, and the photovoltaic device corresponding to the identification information replies with a first receipt signal, and the device information includes a status identification of the corresponding photovoltaic device, and the status identification is used to identify whether the corresponding photovoltaic device is a second photovoltaic device.
  • the first signal instruction is a first photovoltaic device search instruction
  • the photovoltaic device that successfully answers the first photovoltaic device search instruction replies with a first receipt signal
  • the device information includes identification information of the corresponding photovoltaic device.
  • the grouping information is determined by each of the second photovoltaic devices according to signal characteristics of each of the first receipt signals and a corresponding signal threshold.
  • the signal characteristic includes one of signal strength, signal impedance, and signal attenuation.
  • the grouping information is determined by the maximum difference value in the sorting of differences between the signal strengths of the first receipt signals of the second photovoltaic devices and the corresponding signal thresholds.
  • the grouping information is generated when each of the second photovoltaic devices receives the second signal instruction and determines that the identification information of the photovoltaic device carried in the received first receipt signal is consistent with the identification information of the photovoltaic device carried in the second signal instruction.
  • the grouping information is determined by the second photovoltaic device according to signal characteristics of each second receipt signal and a corresponding signal threshold.
  • the third signal instruction includes a group information reporting instruction
  • the group information reporting instruction includes identification information of a designated second photovoltaic device, and the corresponding second photovoltaic device reports its group information.
  • the third signal instruction is a second photovoltaic device search instruction, and the second photovoltaic device search instruction is successfully answered.
  • the second photovoltaic device reports its grouping information and/or identification information.
  • the present application provides a photovoltaic device, which is applied to the photovoltaic system shown in FIG. 1 or FIG. 2 , and the photovoltaic device includes:
  • a second determination module 1501 is used for communication between the photovoltaic device and the management module to achieve determination of a first photovoltaic device among a plurality of optical devices in each photovoltaic string, wherein the first photovoltaic device is used to determine a second photovoltaic device located in the same photovoltaic string;
  • the third determination module 1502 is used to determine the grouping information of each of the second photovoltaic devices according to the receipt signal sent during the communication between each of the first photovoltaic devices and the management module; wherein the grouping information is used to implement the grouping of each of the photovoltaic devices.
  • the second determining module is specifically configured to:
  • Each of the photovoltaic devices receives a first signal instruction sent by the management module
  • the photovoltaic device in response to the first signal instruction sends a first receipt signal to the management module, the first receipt signal is used to determine a first photovoltaic device among a plurality of photovoltaic devices, and the first receipt signal includes device information of the corresponding photovoltaic device.
  • the second determining module is further configured to:
  • Each of the photovoltaic devices receives a second signal instruction sent by the management module, where the second signal instruction includes a signal threshold for determining a second photovoltaic device located in the same photovoltaic string as the corresponding first photovoltaic device and its grouping information.
  • the second photovoltaic device is determined based on a signal characteristic of the first receipt signal and a corresponding signal threshold.
  • the third determination module is specifically used to:
  • Each of the photovoltaic devices receives a third signal instruction sent by the management module
  • the second photovoltaic device In response to the third signal instruction, the second photovoltaic device sends a third receipt signal to the management module, where the third receipt signal includes grouping information and/or identification information corresponding to the second photovoltaic device.
  • the first signal instruction is a status collection instruction, including identification information of the photovoltaic device, and the photovoltaic device corresponding to the identification information replies with a first receipt signal, and the device information includes a status identification of the corresponding photovoltaic device, and the status identification is used to identify whether the corresponding photovoltaic device is a second photovoltaic device.
  • the first signal instruction is a first photovoltaic device search instruction
  • the photovoltaic device that successfully answers the first photovoltaic device search instruction replies with a first receipt signal
  • the device information includes identification information of the corresponding photovoltaic device.
  • the grouping information is determined by each of the second photovoltaic devices according to signal characteristics of each of the first receipt signals and a corresponding signal threshold.
  • the signal characteristic includes one of signal strength, signal impedance, and signal attenuation.
  • the grouping information is determined by the maximum difference value in the sorting of differences between the signal strengths of the first receipt signals of the second photovoltaic devices and the corresponding signal thresholds.
  • the grouping information is generated when each of the second photovoltaic devices receives the second signal instruction and determines that the identification information of the photovoltaic device carried in the received first receipt signal is consistent with the identification information of the photovoltaic device carried in the second signal instruction.
  • the grouping information is determined by the second photovoltaic device according to signal characteristics of each second receipt signal and a corresponding signal threshold.
  • the third signal instruction includes a group information reporting instruction
  • the group information reporting instruction includes a specified
  • the second photovoltaic device reports its grouping information accordingly.
  • the third signal instruction is a second photovoltaic device search instruction
  • the second photovoltaic device that successfully answers the second photovoltaic device search instruction reports its grouping information and/or identification information.
  • Each module in the above photovoltaic equipment can be implemented in whole or in part by software, hardware and a combination thereof.
  • the above modules can be embedded in or independent of the processor in the computer device in the form of hardware, or can be stored in the memory of the computer device in the form of software, so that the processor can call and execute the operations corresponding to the above modules.
  • a computer device which may be a server, and its internal structure diagram may be as shown in FIG16.
  • the computer device includes a processor, a memory, and a network interface connected via a system bus.
  • the processor of the computer device is used to provide computing and control capabilities.
  • the memory of the computer device includes a non-volatile storage medium and an internal memory.
  • the non-volatile storage medium stores an operating system, a computer program, and a database.
  • the internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium.
  • the database of the computer device is used to store motion detection data.
  • the network interface of the computer device is used to communicate with an external terminal via a network connection.
  • FIG. 16 is merely a block diagram of a partial structure related to the scheme of the present application, and does not constitute a limitation on the computer device to which the scheme of the present application is applied.
  • the specific computer device may include more or fewer components than shown in the figure, or combine certain components, or have a different arrangement of components.
  • a computer device including a memory and a processor, wherein a computer program is stored in the memory, and when the processor executes the computer program, the steps in any of the above-mentioned photovoltaic device grouping method embodiments are implemented.
  • a computer-readable storage medium on which a computer program is stored.
  • the computer program is executed by a processor, the steps in any of the above-mentioned photovoltaic device grouping method embodiments are implemented.
  • Non-volatile memory may include read-only memory (ROM), magnetic tape, floppy disk, flash memory or optical memory, etc.
  • Volatile memory may include random access memory (RAM) or external cache memory.
  • RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM).

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Abstract

一种光伏设备分组方法、管理模块、光伏设备、系统及存储介质，方法包括：基于与各所述光伏设备之间的通信，确定各所述光伏组串中的多个光伏设备中的第一光伏设备，所述第一光伏设备用于确定与其位于同一光伏组串的第二光伏设备；基于各所述第二光伏设备的分组信息实现对各所述光伏设备的分组，其中，所述分组信息由各所述第二光伏设备根据各所述第一光伏设备与所述管理模块通信过程中所发送的回执信号所确定。

Description

光伏设备分组方法、管理模块、光伏设备、系统及介质
相关申请
本申请要求2022年10月19日申请的，申请号为202211279826.7，名称为“光伏设备分组方法、管理模块、光伏设备、系统及介质”的中国专利申请的优先权，在此将其全文引入作为参考。
技术领域
本申请涉及光伏发电技术领域，特别是涉及一种光伏设备分组方法、管理模块、光伏设备、系统及存储介质。
背景技术
随着光伏发电技术的发展，在光伏系统中，MLPE(Module levelpower electronics，组件级电力电子)光伏设备的应用越来越普遍，该MLPE光伏设备可以用于对光伏组件进行最大功率点跟踪、关断开通操作或者数据采集监控等。
通常情况下，一个或者多个光伏组件配置有一个MLPE光伏设备，因此光伏系统中MLPE光伏设备的数量较多。为了准确获取每个光伏组件的信息和方便后期的维护等工作，需要清楚的获知每个光伏设备的位置信息，包括每个MLPE光伏设备属于哪一个光伏组串。
相关技术中，通常采用人工方式确定光伏系统中MLPE光伏设备的分组情况。显然，相关技术的方法中确定各个MLPE光伏设备的分组信息的过程过于复杂，操作时间过长，且容易出错，并增加了人工成本。
发明内容
根据本申请的各种实施例，提供一种光伏设备分组方法、装置、系统、计算机设备及存储介质。
第一方面，本申请实施例提出一种光伏设备分组方法，应用于光伏系统中的管理模块，所述光伏系统还包括多个光伏组串，所述光伏组串包括串联连接的多个光伏设备以及分别与各所述光伏设备连接的光伏组件，所述方法包括：
基于与各所述光伏设备之间的通信，确定各所述光伏组串中的多个光伏设备中的第一光伏设备，所述第一光伏设备用于确定与其位于同一光伏组串的第二光伏设备；
基于各所述第二光伏设备的分组信息实现对各所述光伏设备的分组，其中，所述分组信息由各所述第二光伏设备根据各所述第一光伏设备与所述管理模块通信过程中所发送的回执信号所确定。
在一实施例中，所述基于与各所述光伏设备之间的通信，确定各所述光伏组串中的多个光伏设备中的第一光伏设备包括：
向各所述光伏设备发送第一信号指令；
接收响应于所述第一信号指令的光伏设备所发送的第一回执信号，并基于所述第一回执信号确定多个光伏设备中的第一光伏设备，所述第一回执信号包括对应光伏设备的设备信息。
在一实施例中，所述基于与各所述光伏设备之间的通信，确定各所述光伏组串中的多个光伏设备中的第一光伏设备还包括：
向各所述光伏设备发送第二信号指令，所述第二信号指令包括用于确定与相应的第一光伏设备位于同一光伏组串的第二光伏设备及其分组信息的信号阈值。
在一实施例中，所述基于各所述第二光伏设备的分组信息实现各所述光伏设备的分组包括：
向各所述第二光伏设备发送第三信号指令；
接收响应于所述第三信号指令的第二光伏设备所发送的第三回执信号，所述第三回执信号包括对应第二光伏设备的分组信息和/或标识信息。
在一实施例中，所述方法还包括：
向各所述光伏设备发送第四信号指令，所述第四信号指令用于告知各所述第二光伏设备已被注册。
在一实施例中，所述第一信号指令为状态采集指令，包括光伏设备的标识信息，与标识信息相应的光伏设备回复第一回执信号，所述设备信息包括对应光伏设备的状态标识，所述状态标识用于标识对应光伏设备是否为第二光伏设备；所述基于所述第一回执信号确定多个光伏设备中的第一光伏设备包括：
根据所述第一回执信号中的状态标识确定对应光伏设备是否为第二光伏设备；若不是第二光伏设备，则确定对应光伏设备为第一光伏设备。
在一实施例中，所述第一信号指令为第一光伏设备搜索指令，竞答所述第一光伏设备搜索指令成功的光伏设备回复第一回执信号，基于所述第一回执信号确定对应的光伏设备为第一光伏设备，所述设备信息包括对应光伏设备的标识信息。
在一实施例中，所述分组信息由各所述第二光伏设备根据各所述第一回执信号的信号特征以及相应的信号阈值所确定。
在一实施例中，所述信号特征包括信号强度、信号阻抗、信号衰减度中的一种。
在一实施例中，所述分组信息由各所述第二光伏设备根据各所述第一回执信号的信号强度与相应的信号阈值的差值排序中的最大差值所确定。
在一实施例中，在各所述第二光伏设备接收到第二信号指令，且判断其接收到的第一回执信号中所携带的光伏设备的标识信息与所述第二信号指令中所携带的光伏设备的标识信息一致的情况下，生成所述分组信息。
在一实施例中，重复发送所述第二信号指令，所述分组信息由所述第二光伏设备根据各所述第一光伏设备响应于所述第二信号指令的所发送的第二回执信号的信号特征以及相应的信号阈值所确定。
在一实施例中，所述第三信号指令为分组信息上报指令，所述分组信息上报指令包括所指定的第二光伏设备的标识信息，用于指示相应的第二光伏设备上报其分组信息。
在一实施例中，所述第三信号指令为第二光伏设备搜索指令，竞答所述第二光伏设备搜索指令成功的第二光伏设备上报其分组信息和/或标识信息。
第二方面，本申请实施例提出一种管理模块，应用于光伏系统，所述光伏系统还包括多个光伏组串，所述光伏组串包括串联连接的多个光伏设备以及分别与各所述光伏设备连接的光伏组件，所述管理模块包括：
第一确定模块，用于基于与各所述光伏设备之间的通信，确定各所述光伏组串中的多个光伏设备中的第一光伏设备，所述第一光伏设备用于确定与其位于同一光伏组串的第二光伏设备；
分组模块，用于基于各所述第二光伏设备的分组信息实现对各所述光伏设备的分组，其中，所述分组信息由各所述第二光伏设备根据各所述第一光伏设备与所述管理模块通信过程中所发送的回执信号所确定。
第三方面，本申请实施例提出一种光伏设备分组方法，应用于光伏系统中的光伏设备，所述光伏系统包括多个光伏组串以及管理模块，所述光伏组串包括多个光伏设备以及分别与各所述光伏设备连接的光伏组件，所述方法包括：
各所述光伏设备与所述管理模块通信，以实现各所述光伏组串中的多个光伏设备中的第一光伏设备 的确定，所述第一光伏设备用于确定与其位于同一光伏组串的第二光伏设备；
各所述第二光伏设备根据各所述第一光伏设备与所述管理模块通信过程中所发送的回执信号，生成各所述第二光伏设备的分组信息；其中，所述分组信息用于实现各所述光伏设备的分组。
在一实施例中，所述各所述光伏设备与所述管理模块通信，以实现各所述光伏组串中的多个光伏设备中的第一光伏设备的确定包括：
各所述光伏设备接收所述管理模块发送的第一信号指令；
响应于所述第一信号指令的光伏设备向所述管理模块发送第一回执信号，所述第一回执信号用于确定多个光伏设备中的第一光伏设备，所述第一回执信号包括对应光伏设备的设备信息。
在一实施例中，所述各所述光伏设备与所述管理模块通信，以实现各所述光伏组串中的多个光伏设备中的第一光伏设备的确定还包括：
各所述光伏设备接收所述管理模块发送的第二信号指令，所述第二信号指令包括用于确定与相应的第一光伏设备位于同一光伏组串的第二光伏设备及其分组信息的信号阈值。
在一实施例中，基于所述第一回执信号的信号特征和相应的信号阈值确定第二光伏设备。
在一实施例中，所述方法还包括：
各所述光伏设备接收所述管理模块发送的第三信号指令；
响应于所述第三信号指令的第二光伏设备向所述管理模块发送第三回执信号，所述第三回执信号包括对应第二光伏设备的分组信息和/或标识信息。
在一实施例中，所述第一信号指令为状态采集指令，包括光伏设备的标识信息，与标识信息相应的光伏设备回复所述第一回执信号，所述设备信息包括对应光伏设备的状态标识，所述状态标识用于标识对应光伏设备是否为第二光伏设备。
在一实施例中，所述第一信号指令为第一光伏设备搜索指令，竞答所述第一光伏设备搜索指令成功的光伏设备回复第一回执信号，所述设备信息包括对应光伏设备的标识信息。
在一实施例中，所述分组信息由各所述第二光伏设备根据各所述第一回执信号的信号特征以及相应的信号阈值所确定。
在一实施例中，所述信号特征包括信号强度、信号阻抗、信号衰减度中的一种。
在一实施例中，所述分组信息由各所述第二光伏设备根据各所述第一回执信号的信号强度与相应的信号阈值的差值排序中的最大差值所确定。
在一实施例中，在各所述第二光伏设备接收到第二信号指令，且判断其接收到的第一回执信号中所携带的光伏设备的标识信息与所述第二信号指令中所携带的光伏设备的标识信息一致的情况下，生成所述分组信息。
在一实施例中，在所述第二光伏设备没有接收到第一回执信号且接收到多个所述第二信号指令的情况下，所述分组信息由所述第二光伏设备根据各所述第二回执信号的信号特征以及相应的信号阈值所确定。
在一实施例中，所述第三信号指令为分组信息上报指令，所述分组信息上报指令包括所指定的第二光伏设备的标识信息，相应的第二光伏设备上报其分组信息。
在一实施例中，所述第三信号指令为第二光伏设备搜索指令，竞答所述第二光伏设备搜索指令成功的第二光伏设备上报其分组信息和/或标识信息。
第四方面，本申请实施例提出一种光伏设备，应用于光伏系统，所述光伏系统包括多个光伏组串以及管理模块，所述光伏组串包括多个光伏设备以及分别与各所述光伏设备连接的光伏组件，所述光伏设 备包括：
第二确定模块，用于所述光伏设备与所述管理模块之间的通信，以实现各所述光伏组串中的多个光设备中的第一光伏设备的确定，所述第一光伏设备用于确定与其位于同一光伏组串的第二光伏设备；
第三确定模块，用于根据各所述第一光伏设备与所述管理模块通信过程中所发送的回执信号，确定各所述第二光伏设备的分组信息；其中，所述分组信息用于实现各所述光伏设备的分组。
第五方面，本申请实施例提出一种光伏系统，包括多个光伏组串以及如第二方面所述的管理模块，所述光伏组串包括多个如第四方面的光伏设备以及分别与各所述光伏设备连接的光伏组件。
第六方面，本申请实施例提出一种计算机可读存储介质，其上存储有计算机程序，所述处理器执行所述计算机程序时实现第一方面或第三方面所述的步骤。
本申请的一个或多个实施例的细节在以下附图和描述中提出，以使本申请的其他特征、目的和优点更加简明易懂。
附图说明
为了更清楚地说明本申请实施例或传统技术中的技术方案，下面将对实施例或传统技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据公开的附图获得其他的附图。
图1为一实施例中光伏系统的结构示意图。
图2为另一实施例中光伏系统的结构示意图。
图3为一实施例中光伏设备分组方法的流程示意图。
图4为一实施例中第一光伏设备确定方法的流程示意图。
图5为一实施例中第一光伏设备确定方法的具体流程示意图。
图6为另一实施例中第一光伏设备确定方法的具体流程示意图。
图7为又一实施例中第一光伏设备确定方法的具体流程示意图。
图8为一实施例中光伏设备分组方法的具体流程示意图。
图9为另一实施例中光伏设备分组方法的具体流程示意图。
图10为一实施例中光伏设备分组方法的整体流程示意图。
图11为另一实施例中第一光伏设备和第二光伏设备确定方法整体流程示意图。
图12为另一实施例中光伏设备分组方法的整体流程示意图。
图13为一实施例中管理模块的结构示意图。
图14为另一实施例中光伏设备分组方法的流程示意图。
图15为一实施例中光伏设备的结构示意图。
图16为一实施例中计算机设备的结构示意图。
具体实施方式
为了更清楚地说明本申请的实施例的技术方案，下面将对实施例描述中所需要使用的附图作简单的介绍。显而易见地，下面描述中的附图仅仅是本申请的一些示例或实施例，对于本领域的普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图将本申请应用于其他类似情景。除非从语言环境中显而易见或另做说明，图中相同标号代表相同结构或操作。
如本申请和权利要求书中所示，除非上下文明确提示例外情形，“一”、“一个”、“一种”和/ 或“该”等词并非特指单数，也可包括复数。一般说来，术语“包括”与“包含”仅提示包括已明确标识的步骤和元素，而这些步骤和元素不构成一个排它性的罗列，方法或者设备也可能包含其他的步骤或元素。
虽然本申请对根据本申请的实施例的系统中的某些模块做出了各种引用，然而，任何数量的不同模块可以被使用并运行在计算设备和/或处理器上。模块仅是说明性的，并且系统和方法的不同方面可以使用不同模块。
应当理解的是，当单元或模块被描述为“连接”、“耦接”其它单元、模块或块时，其可以指直接连接或耦接，或者与其它单元、模块或块通信，或者可以存在中间的单元、模块或块，除非上下文明确指明其它方式。本文所使用的术语“和/或”可包括一个或多个相关列出项目的任意与所有组合。
图1为本申请一实施例提供的光伏系统的结构示意图，该光伏系统包括多个光伏组串10以及管理模块20，光伏组串10包括串联连接的多个光伏设备101(即图1中的S1-Sm)以及分别与各光伏设备101连接的光伏组件102，光伏组件102用于提供直流电，管理模块20与各光伏设备10相通信，用于对各光伏设备进行分组。
其中，光伏设备101可以是关断器、优化器、微型逆变器以及监控器等，管理模块20与各光伏设备101例如通过电力线载波通信。
图2为本申请另一实施例提供的光伏系统的结构示意图，该光伏系统包括逆变器30、与逆变器30连接的多个光伏组串10以及管理模块20，光伏组串10包括串联连接的多个光伏设备101(即图1中的S1-Sm)以及分别与各光伏设备101连接的光伏组件102，逆变器30用于将光伏组件102提供的直流电逆变为交流电并输出，管理模块20与各光伏设备101相通信，例如通过电力线载波通讯。
其中，光伏设备101可以是关断器、优化器以及监控器等。同一光伏组串内的多个光伏设备串联连接，多个光伏组串分别接入逆变器30的多个直流输入端口，管理模块20与各光伏设备101例如通过电力线载波通信。
管理模块20用于与各光伏设备101通信，对各光伏设备101实现分组。
在一实施例中，管理模块20可以集成在逆变器30中。
在一实施例中，如图3所示，提供了一种光伏设备分组方法，以该方法应用于图1或图2中的光伏系统中的管理模块为例进行说明，包括以下步骤：
S301：基于与各所述光伏设备之间的通信，确定各所述光伏组串中的多个光伏设备中的第一光伏设备，所述第一光伏设备用于确定与其位于同一光伏组串的第二光伏设备。
其中，第一光伏设备可以为每个光伏组串中的任意一个光伏设备，例如为一个光伏组串中首个与管理模块通信的光伏设备；第二光伏设备为已有分组信息且不是第一光伏设备的光伏设备。
在管理模块与各第一光伏设备通信过程中，第二光伏设备根据第一光伏设备与所述管理模块通信过程中所发送的回执信号的信号特征生成各自的分组信息。
其中，所述信号特征可以是信号强度、信号阻抗、信号衰减度中的一种。
S302：基于各所述第二光伏设备的分组信息实现对各所述光伏设备的分组，其中，所述分组信息由各所述第二光伏设备根据各所述第一光伏设备与所述管理模块通信过程中所发送的回执信号所确定。
各光伏设备之间通过电力线连接，由于线路阻抗的影响，与一第一光伏设备位于同一光伏组串的第二光伏设备接收的该第一光伏设备所发送回执信号的信号特征和与该第一光伏设备位于不同光伏组串的第二光伏设备接收的该第一光伏设备所发送回执信号的信号特征的值不同，与该第一光伏设备位于同一光伏组串的第二光伏设备接收的该第一光伏设备所发送回执信号的信号特征的值大于或小于(考虑到 信号特征可能是信号强度、信号衰减度、信号阻抗的情况)与该第一光伏设备位于不同光伏组串的第二光伏设备接收的该第一光伏设备所发送回执信号的信号特征的值，且两者量级相差较大，因此根据回执信号的信号特征可以生成分组信息。
基于上述步骤S301-S302，首先基于与各光伏设备之间的通信，确定各光伏组串中的多个光伏设备中的第一光伏设备，第一光伏设备用于确定与其位于同一光伏组串的第二光伏设备，然后基于各所述第二光伏设备的分组信息，对各所述光伏设备实现分组。本技术方案实现了光伏设备的自动分组，提高了分组效率。
在一实施例中，如图4所示，所述基于与各所述光伏设备之间的通信，确定各所述光伏组串中的多个光伏设备中的第一光伏设备包括以下步骤：
S401：向各所述光伏设备发送第一信号指令；
S402：接收响应于所述第一信号指令的光伏设备所发送的第一回执信号，并基于所述第一回执信号确定多个光伏设备中的第一光伏设备，所述第一回执信号包括对应光伏设备的设备信息。
其中，所述第一回执信号可以包括该光伏设备自身的设备信息，也可以包括该光伏设备所属光伏组串中的第一光伏设备的设备信息。
其中，所述设备信息包括标识信息和/或状态标识，标识信息可以是序列号和/或逻辑地址。
基于步骤S401-S402，实现确定多个光伏设备中的第一光伏设备。
在一实施例中，第一信号指令可以是状态采集指令，包括光伏设备的标识信息，与标识信息相应的光伏设备回复第一回执信号，标识信息例如为光伏设备的序列号。设备信息例如包括对应光伏设备的状态标识，状态标识用于表示对应光伏设备是第一光伏设备、第二光伏设备以及待分组光伏设备中的哪一种。
如图5所示，具体包括以下步骤：
S501：向各所述光伏设备发送状态采集指令，并接收响应于所述状态采集指令的光伏设备发送的包括状态标识的第一回执信号。
第一回执信号可以是以广播的形式发送。
S502：根据所述第一回执信号中的状态标识确定对应光伏设备是否为第二光伏设备；若状态标识表示对应光伏设备不是第二光伏设备，则确定对应光伏设备为第一光伏设备。
由于第一回执信号包括状态标识，因此在接收到第一回执信号后可以根据其中的状态标识确定多个光伏设备中的第一光伏设备。
在一实施例中，所述第一回执信号中还可以携带有所述光伏设备所属光伏组串中的第一光伏设备的标识信息，例如为第一光伏设备的序列号，此时在确定光伏设备的类型同时可以确认其所属光伏组串。
在另一实施例中，第一信号指令可以是第一光伏设备搜索指令，竞答所述第一光伏设备搜索指令成功的光伏设备回复第一回执信号，基于所述第一回执信号确定对应的光伏设备为第一光伏设备，设备信息包括对应光伏设备的标识信息，例如为光伏设备的序列号。
如图6所示，具体包括以下步骤：
S601：向各所述光伏设备发送第一光伏设备搜索指令，并接收响应于所述第一光伏设备搜索指令的光伏设备发送的包括标识信息的第一回执信号。
在一实施例中，所述第一回执信号中携带有该光伏设备的标识信息，例如为光伏设备的序列号。
在一实施例中，所述第一回执信号中还可以携带有所述光伏设备所属光伏组串中的第一光伏设备的标识信息，例如为第一光伏设备的序列号，此时在确定光伏设备的类型同时可以确认其所属光伏组串。
光伏设备通过竞答的方式响应第一光伏设备搜索指令，只有竞答成功的光伏设备回复第一回执信号。
在一实施例中，除第一光伏设备和第二光伏设备外的其他光伏设备通过竞答的方式响应第一光伏设备搜索指令。
管理模块接收的第一回执信号正常时，表示只有一个光伏设备抢答成功。
进一步的，若是没有接收到第一回执信号，则管理模块重复发送第一光伏设备搜索指令。
只有一个光伏设备抢答成功回复第一回执信号时，管理模块和其他光伏设备记录第一回执信号中的标识信息以及第一回执信号的信号特征。
在一实施例中，向已成功回复第一光伏设备搜索指令的光伏设备再次或多次重复发送第一光伏设备搜索指令，请求对应的光伏设备重新发送第一回执信号，用于进一步提高分组的准确性。
S602：基于所述第一回执信号确定对应的光伏设备为第一光伏设备。
设备信息包括对应光伏设备的标识信息，管理模块收到该第一回执信号后，根据标识信息对应的光伏设备确定为某一光伏组串的第一光伏设备。
在一实施例中，在向各所述光伏设备发送第一光伏设备搜索指令之前，还包括以下步骤：
向各所述光伏设备发送竞答指令。
管理模块例如以广播的形式向各所述光伏设备发送竞答指令。
管理模块向各所述光伏设备发送竞答指令，所有除第一光伏设备和第二光伏设备的外的其他光伏设备在收到竞答指令且完成随机延时后，检测信道是否空闲，如果信道空闲则回复竞答指令，抢答成功，如果信道忙，则不回复竞答指令，抢答失败。
在该实施例中，只有对竞答指令竞答成功的光伏设备参与第一光伏设备搜索指令的抢答，可以将第一光伏设备的搜索范围大幅度缩小，提高了设备搜索和分组的效率。
进一步的，管理模块若判断无竞答响应，则可以重复多次发送竞答指令。若仍无竞答响应则向第二光伏设备发送第二光伏设备搜索指令。后文会对第二光伏设备搜索指令进行详细阐述。
在一实施例中，如图7所示，所述基于与各所述光伏设备之间的通信，确定各所述光伏组串中的多个光伏设备中的第一光伏设备还包括以下步骤：
S701：向各所述光伏设备发送第二信号指令；
其中，所述第二信号指令包括用于确定与相应的第一光伏设备位于同一光伏组串的第二光伏设备及其分组信息的信号阈值。
在一实施例中，第二信号指令可以是第一光伏设备注册指令，其进一步的还包括第一光伏设备的标识信息以告知该光伏设备被注册为第一光伏设备。第二信号指令可以以广播的形式发送。
信号阈值根据接收的回执信号的信号特征所确定。
具体的，信号阈值的大小可以由管理模块根据信号裕量和其接收到的光伏设备发送的回执信号的信号特征的值设置。每次发送的第二信号指令中的信号阈值大小有可能不同。
进一步的，所述信号裕量可以根据实际情况设置，所述信号阈值为管理模块接收到的第一光伏设备发送的回执信号的信号特征的值与信号裕量之差。
在一实施例中，信号阈值的大小可以由管理模块根据信号裕量和其接收到的第一回执信号的信号特征的值设置。
所述信号裕量可以根据实际情况设置，所述信号阈值为管理模块接收到的第一光伏设备发送的第一回执信号的信号特征的值与信号裕量之差。
在管理模块发送第二信号指令的同时，通知除第一光伏设备外的其他光伏设备基于第二信号指令， 生成各自的分组信息。所述分组信息例如为第二光伏设备中所存储的与其位于同一光伏组串的第一光伏设备的标识信息。
各其他光伏设备根据接收到的第一回执信号的信号特征和相应的信号阈值确认是否和对应的第一光伏设备在同一个光伏组串，并更新所存储的状态标识和/或第一光伏设备的标识信息(即分组信息)。
在一实施例中，其他光伏设备接收到第二信号指令后，将接收到的最近一次的第一回执信号的信号特征的值与该第二信号指令中相应的信号阈值进行比较。
在一实施例中，其他光伏设备接收到第二信号指令后，例如首先判断其接收到的第一回执信号中所携带的光伏设备的标识信息是否与第二信号指令中所携带的光伏设备的标识信息一致，若一致，则将接收到的第一回执信号的信号特征的值与相应的信号阈值进行比较；若不一致，则认为该第一回执信号不是第二信号指令所指定的第一光伏设备发送的，不进行比较。例如判断其接收到的第一回执信号中所携带的光伏设备的序列号是否与第二信号指令中所携带的光伏设备的序列号相同。
在一实施例中，信号特征为信号强度，将接收到的第一回执信号的信号强度与相应的信号阈值进行比较，若接收到的第一回执信号的信号强度大于信号阈值，则确认和对应的第一光伏设备在同一个光伏组串，并更新所存储的状态标识和/或第一光伏设备的标识信息。
在另一实施例中，第二光伏设备会收到多个不同的第一光伏设备发送的第一回执信号。若第二光伏设备判断其接收的第一回执信号的信号强度大于相应的信号阈值，其可以将接收到的多个第一光伏设备发送的第一回执信号的信号强度和相应的信号阈值之间的差值进行排序，选择与差值最大的第一光伏设备位于同一光伏组串，并将所存储的第一光伏设备的标识信息更新为差值最大的第一光伏设备的标识信息。
在又一实施例中，第二光伏设备会收到多个不同的第一光伏设备发送的第一回执信号。若第二光伏设备判断其接收的第一回执信号的信号强度大于相应的信号阈值，可以将接收到的多个不同第一光伏设备发送的第一回执信号的信号强度进行排序，选择与信号强度最大的第一光伏设备位于同一光伏组串，并将所存储的第一光伏设备的标识信息更新为信号强度最大的第一光伏设备的标识信息。
需要说明的是，当信号特征为信号阻抗或信号衰减度时，其分组信息的确定方法与上述任一实施例中的确定方法的原理基本相同，因此不再赘述。
S702：接收响应于所述第二信号指令的光伏设备所发送的第二回执信号；
管理模块接收到第二回执信号表示相应的光伏设备成功注册为第一光伏设备。
在一实施例中，所述第二回执信号包括对应光伏设备的设备信息。
在一实施例中，考虑到有些第二光伏设备没有接收到第一回执信号的情况，第一光伏设备发送第二回执信号时，管理模块和其他光伏设备记录所述第二回执信号中光伏设备的标识信息及其信号特征，管理模块再次或多次重复发送第二信号指令。其他光伏设备可以根据接收的第二回执信号的信号特征和其对应的信号阈值确认是否和相应的第一光伏设备属于同一个光伏组串，用于防止设备有漏搜索和漏注册的问题，进一步提高分组的精确度。
根据接收的第二回执信号的信号特征和其对应的信号阈值确认是否和相应的第一光伏设备属于同一个光伏组串，与根据第一回执信号的信号特征和其对应的信号阈值的确认方法相同，因此不再赘述。
在一实施例中，如图8所示，所述基于各所述第二光伏设备的分组信息实现对各所述光伏设备的分组包括以下步骤：
S801：向各所述第二光伏设备发送第三信号指令。
S802：接收响应于所述第三信号指令的第二光伏设备所发送的第三回执信号。
其中，所述第三回执信号包括对应第二光伏设备的分组信息和/或标识信息。
在一实施例中，管理模块例如依次以广播形式发送第三信号指令，这里所述的第三信号指令为分组信息上报指令。所述第三信号指令包括一个指定的第二光伏设备的标识信息，用于指示相应的第二光伏设备上报其分组信息，分组信息为其所属光伏组串的第一光伏设备的标识信息。
在另一实施例中，管理模块例如以广播的形式发送第三信号指令，这里所述的第三信号指令为第二光伏设备搜索指令，所有未注册的第二光伏设备参与竞答。
第二光伏设备搜索指令包括第一光伏设备的标识信息，只有与该第一光伏设备位于同一光伏组串的未注册的第二光伏设备参与竞答，此时将第二光伏设备的搜索范围缩小至一个光伏组串，大大缩小了搜索范围，提高第二光伏设备的搜索效率。此时，第二光伏设备可以只需上报其标识信息，例如序列号，管理模块判断其和该第一光伏设备为同一光伏组串。
在一实施例中，在管理模块发送第二光伏设备搜索指令之前，可以以广播的形式发一个通知指令，所述通知指令包括第一光伏设备的标识信息，所述通知指令用于通知第二光伏设备，后面发送的第二光伏设备搜索指令只有与通知指令中第一光伏设备处于同一组串的第二光伏设备才会进行响应。此时，第二光伏设备搜索指令不需要带第一光伏设备的标识信息，同样地，将第二光伏设备的搜索范围缩小至一个光伏组串，大大缩小了搜索范围，提高第二光伏设备的搜索效率。
在一实施例中，若管理模块接收不到第三回执信号，则重复发送第二光伏设备搜索指令，若管理模块多次收不到第三回执信号，则停止发送第二光伏设备搜索指令，第二光伏设备搜索结束。
管理模块基于对应第二光伏设备的分组信息，实现光伏设备的分组。
在一实施例中，如图9所示，所述方法还包括：
S901：向各所述光伏设备发送第四信号指令；
在一实施例中，第四信号指令包括第二光伏设备的标识信息，所述第四信号指令用于告知相应的第二光伏设备已被注册。
在一实施例中，已注册的第二光伏设备后续不再响应第二光伏设备搜索指令。
S902：接收响应于所述第四信号指令的第二光伏设备所发送的第四回执信号。
在一实施例中，步骤S902可以省略，此时，可以重复多次向第二光伏设备发送第四信号指令。
在一实施例中，当所述第一信号指令为状态采集指令时，所述第一信号指令或所述第二信号指令或所述第三信号指令或所述第四信号指令包括对应光伏设备分配的逻辑地址，以实现光伏设备的组网。
在一实施例中，当所述第一信号指令为第一光伏设备搜索指令时，所述第二信号指令和所述第四信号指令包括对应光伏设备分配的逻辑地址，以实现光伏设备的组网。
在一实施例中，可以首先完成所有光伏设备的组网，然后按照上述分组方式进行光伏设备的分组，也可以光伏设备的分组和组网是交互进行的，在实现分组的同时还实现了光伏设备的组网。
进一步的，在实现分组的同时还实现了光伏设备的自动组网，也就是确定了各光伏组串中的第一光伏设备和第二光伏设备，将设备搜索、组网和设备分组相结合。
在一具体实施例中，光伏设备分组方法的整体流程图如图10所示，包括以下步骤：
S1001：首先手动输入各光伏设备的序列号；
这里所述的序列号，可以是光伏设备的MAC地址，通过安装助手APP录入，然后安装助手APP发送给管理模块。
S1002：管理模块选择光伏设备Mi发送第一信号指令；
这里所述的第一信号指令是状态采集指令。
在一实施例中，最初始时，令i＝1，则管理模块向光伏设备M1发送第一信号指令。
这里的光伏设备Mi可以是根据用户输入的序列号的先后次序依次进行编号。例如：用户输入序列号“1x、bx、……”，则序列号为1x的光伏设备为M1,序列号为bx的光伏设备为M2，依次类推。
S1003：光伏设备Mi发送第一回执信号；
在该步骤中，此时光伏设备Mi会向管理模块和其他光伏设备发送第一回执信号。
S1004：管理模块判断光伏设备Mi是否为第二光伏设备，若否，则将该光伏设备Mi确定为某一光伏组串的第一光伏设备，进入步骤S1005；若是，则进行步骤S1008；
在该步骤中，若光伏设备Mi被确定为第一光伏设备，管理模块和其他光伏设备记录光伏设备Mi发送的第一回执信号中携带的光伏设备Mi的标识信息以及接收到的第一回执信号的信号特征。
其他光伏设备为除第一光伏设备以外的其他光伏设备。
S1005：管理模块发送第二信号指令；
第二信号指令为第一光伏设备注册指令，所述第二信号指令包括光伏设备Mi的标识信息和信号阈值，标识信息例如为光伏设备Mi的序列号。
S1006：各其他光伏设备根据接收到的第一回执信号的信号特征和相应的信号阈值确认是否和光伏设备Mi在同一个光伏组串，并更新所存储的状态标识和第一光伏设备的标识信息。
各其他光伏设备为除第一光伏设备以外的其他光伏设备。
S1007：光伏设备Mi发送第二回执信号；
所述第二回执信号，用于光伏设备Mi向管理模块发送确认信息，确认其已经收到第二信号指令，管理模块接收到第二回执信号表示光伏设备Mi完成注册，光伏设备Mi注册为第一光伏设备，所述第二回执信号包括光伏设备Mi的标识信息，例如为光伏设备Mi的序列号。
S1008：管理模块判断i是否小于n，若是，则，i＝i+1，并返回步骤S1002；若否，则进入步骤S1009。
n为光伏系统中光伏设备的个数。
S1009：管理模块向第二光伏设备发送第三信号指令；
第三信号指令为分组信息上报指令，所述第三信号指令包括一个指定的第二光伏设备的标识信息，用于指示相应的第二光伏设备上报其分组信息。
S1010：第二光伏设备发送包含分组信息的第三回执信号；
在该步骤中，步骤S1009中指定的第二光伏设备发送包含其分组信息的第三回执信号，第三回执信号中包括与该第二光伏设备属于同一组串的第一光伏设备的标识信息，表示该第二光伏设备和该第一光伏设备位于同一光伏组串。
在一实施例中，在步骤S1004中，管理模块若判断光伏设备Mi为第二光伏设备，则直接进入步骤S1009，进行第二光伏设备的分组信息上报，完成后判断是否所有光伏设备已上报分组信息，若否，返回步骤S1002，循环往复，直至所有光伏设备完成注册和分组。
进一步的，所述方法还包括：
管理模块向第二光伏设备发送第四信号指令；
管理模块依次向第二光伏设备发送第四信号指令，用于告知相应的第二光伏设备已被注册，第四信号指令包括第二光伏设备的标识信息，所述标识信息例如包括第二光伏设备的序列号。
在一实施例中，所述标识信息还包括管理模块为对应第二光伏设备分配的逻辑地址，用于实现设备组网。
相应的第二光伏设备发送第四回执信号。
在其他实施例中，第二光伏设备发送第四回执信号的步骤可以省略，此时，可以重复多次向第二光伏设备发送第四信号指令，以确保为第二光伏设备分配逻辑地址和注册成功。
在另一具体实施例中，光伏设备分组方法的整体流程图如图11所示，包括以下步骤：
S1101：管理模块发送竞答指令；
S1102：待分组的光伏设备进行抢答；
待分组的光伏设备为除第一光伏设备和第二光伏设备外的其他光伏设备，在收到竞答指令且完成随机延时后，检测信道是否空闲，如果信道空闲则回复竞答指令，抢答成功，如果信道忙，则不回复竞答指令，抢答失败。
S1103：管理模块判断是否有竞答响应，若有，则进入步骤S1104；若否则进入步骤S1109；
S1104：管理模块发送第一信号指令；
在该步骤中，第一信号指令为第一光伏设备搜索指令，对竞答指令抢答成功的光伏设备在收到第一光伏设备搜索指令后进行抢答。
经过步骤S1101-S1103后，在进行步骤S1104时，可以将第一光伏设备的搜索范围大幅度缩小，提高了设备搜索和分组的效率。
S1105：抢答成功的光伏设备回复第一回执信号；
只有一个光伏设备抢答成功回复第一回执信号时，管理模块和其他光伏设备记录第一回执信号中的标识信息以及第一回执信号的信号特征。
管理模块将所述成功回复第一回执信号的光伏设备确定为该光伏设备所在光伏组串的第一光伏设备。
每次抢答成功的光伏设备例如位于不同的光伏组串。
S1106：管理模块发送第二信号指令；
S1107：其他光伏设备接收到第二信号指令后，根据接收的第一回执信号的信号特征和相应的信号阈值确认是否和所述抢答成功的光伏设备在同一个光伏组串，并更新所存储的状态标识和/或第一光伏设备的标识信息；
在该步骤中，所述抢答成功的光伏设备为步骤S1105中所确认的第一光伏设备。
S1108：所述抢答成功的光伏设备发送第二回执信号；
在该步骤中，管理模块若成功接收到第二回执信号，则返回步骤S1101。
在该步骤中，所述抢答成功的光伏设备为步骤S1105中所确认的第一光伏设备。
基于步骤S1101-S1108，确定多个光伏设备中的第一光伏设备和第二光伏设备。
针对每个光伏组串，执行如图12所示的步骤，以实现光伏设备的分组。
S1109：管理模块发送第三信号指令；
在该步骤中，第三信号指令为第二光伏设备搜索指令，管理模块例如以广播的形式向各光伏设备发送第二光伏设备搜索指令，所有未注册的第二光伏设备参与竞答。
在一实施例中，第二光伏设备搜索指令包括第一光伏设备的标识信息，只有与该第一光伏设备位于同一光伏组串的未注册的第二光伏设备参与竞答，此时将第二光伏设备的搜索范围缩小至一个光伏组串，大大缩小了搜索范围，提高第二光伏设备的搜索效率。
在又一实施例中，在管理模块发送第二光伏设备搜索指令之前，可以以广播的形式发一个通知指令，所述通知指令包括第一光伏设备的标识信息，所述通知指令用于通知第二光伏设备，后面发送的第二光伏设备搜索指令只有与通知指令中第一光伏设备处于同一组串的第二光伏设备才会进行响应。此时，第 二光伏设备搜索指令不需要带第一光伏设备的标识信息。
S1110：第二光伏设备发送包含分组信息和/或标识信息的第三回执信号；
S1111：管理模块判断是否接收到第三回执信号，若是，则进入步骤S1112；若否，则进入步骤S1114；
S1112：管理模块向第二光伏设备发送第四信号指令；
在该步骤中，第二光伏设备注册指令用于告知第二光伏设备其已被注册，后续已注册的第二光伏设备不再响应第二光伏设备搜索指令。
S1113：第二光伏设备发送第四回执信号；
在其他实施例中，可以省略步骤S1113。
S1114：管理模块判断是否多次未接收到第三回执信号，若否，则进入步骤S1109；若是，则搜索结束，所有光伏设备完成注册和分组。
管理模块未接收到第三回执信号的次数可以根据实际情况进行设定。
在其他实施例中，可以省略步骤S1101-S1103，此时待分组的光伏设备对步骤S1104中的第一信号指令进行抢答。
本实施例是在完成所有光伏组串的第一光伏设备的搜索和注册后，进行第二光伏设备的分组信息的上报和注册。
在其他实施例中，可以在完成每个光伏组串的第一光伏设备的搜索和注册后进行第二光伏设备的分组信息的上报以及该光伏组串的第二光伏设备的注册。
应该理解的是，虽然上述流程图中的各个步骤按照箭头的指示依次显示，但是这些步骤并不是必然按照箭头指示的顺序依次执行。除非本文中有明确的说明，这些步骤的执行并没有严格的顺序限制，这些步骤可以以其它的顺序执行。而且，上述流程图中的至少一部分步骤可以包括多个步骤或者多个阶段，这些步骤或者阶段并不必然是在同一时刻执行完成，而是可以在不同的时刻执行，这些步骤或者阶段的执行顺序也不必然是依次进行，而是可以与其它步骤或者其它步骤中的步骤或者阶段的至少一部分轮流或者交替地执行。
在一实施例中，如图13所示，本申请提供了一种光伏设备管理模块，应用于图1或图2所示的光伏系统，所述管理模块包括：
第一确定模块1301，用于基于与各所述光伏设备之间的通信，确定各所述光伏组串中的多个光伏设备中的第一光伏设备，所述第一光伏设备用于确定与其位于同一光伏组串的第二光伏设备；
分组模块1302，用于基于各所述第二光伏设备的分组信息实现对各所述光伏设备的分组，其中，所述分组信息由各所述第二光伏设备根据各所述第一光伏设备与所述管理模块通信过程中所发送的回执信号所确定。
在本实施例中，基于管理模块与各所述光伏设备之间的通信，确定各所述光伏组串中的多个光伏设备中的第一光伏设备，基于各所述第二光伏设备的分组信息实现对各所述光伏设备的分组。本申请实现了光伏设备的自动分组，提高了分组效率。
在一实施例中，所述第一确定模块具体用于：
向各所述光伏设备发送第一信号指令；
接收响应于所述第一信号指令的光伏设备所发送的第一回执信号，并基于所述第一回执信号确定多个光伏设备中的第一光伏设备，所述第一回执信号包括对应光伏设备的设备信息。
在一实施例中，所述第一确定模块具体还用于：
向各所述光伏设备发送第二信号指令，所述第二信号指令包括用于确定与相应的第一光伏设备位于 同一光伏组串的第二光伏设备及其分组信息的信号阈值。
在一实施例中，所述分组模块用于：
向各所述第二光伏设备发送第三信号指令；
接收响应于所述第三信号指令的第二光伏设备所发送的第三回执信号，所述第三回执信号包括对应第二光伏设备的分组信息和/或标识信息。
在一实施例中，所述分组模块还用于：
向各所述光伏设备发送第四信号指令，所述第四信号指令用于告知各所述第二光伏设备已被注册。
在一实施例中，所述第一信号指令为状态采集指令，包括光伏设备的标识信息，与标识信息相应的光伏设备回复第一回执信号，所述设备信息包括对应光伏设备的状态标识，所述状态标识用于标识对应光伏设备是否为第二光伏设备；所述第一确定模块具体还用于：
根据所述第一回执信号中的状态标识确定对应光伏设备是否为第二光伏设备；若不是第二光伏设备，则确定对应光伏设备为第一光伏设备。
在一实施例中，所述第一信号指令为第一光伏设备搜索指令，竞答所述第一光伏设备搜索指令成功的光伏设备回复第一回执信号，所述第一确定模块基于所述第一回执信号确定对应的光伏设备为第一光伏设备，所述设备信息包括对应光伏设备的标识信息。
在一实施例中，所述分组信息由各所述第二光伏设备根据各所述第一回执信号的信号特征以及所述相应的信号阈值所确定。
在一实施例中，所述信号特征包括信号强度、信号阻抗、信号衰减度中的一种。
在一实施例中，所述分组信息由各所述第二光伏设备根据各所述第一回执信号的信号强度与相应的信号阈值的差值排序中的最大差值所确定。
在一实施例中，在各所述第二光伏设备接收到第二信号指令，且判断其接收到的第一回执信号中所携带的光伏设备的标识信息与所述第二信号指令中所携带的光伏设备的标识信息一致的情况下，生成所述分组信息。
在一实施例中，在所述第二光伏设备没有接收到第一回执信号的情况下，重复发送所述第二信号指令，所述分组信息由所述第二光伏设备根据各所述第一光伏设备响应于所述第二信号指令的所发送的第二回执信号的信号特征以及相应的信号阈值所确定。
在一实施例中，所述第三信号指令为分组信息上报指令，所述分组信息上报指令包括所指定的第二光伏设备的标识信息，用于指示相应的第二光伏设备上报其分组信息。
在一实施例中，所述第三信号指令为第二光伏设备搜索指令，竞答所述第二光伏设备搜索指令成功的第二光伏设备上报其分组信息和/或标识信息。
关于光伏设备管理模块的具体限定可以参见上文中对于光伏设备分组方法的限定，在此不再赘述。上述光伏设备管理模块中的各个模块可全部或部分通过软件、硬件及其组合来实现。上述各模块可以硬件形式内嵌于或独立于计算机设备中的处理器中，也可以以软件形式存储于计算机设备中的存储器中，以便于处理器调用执行以上各个模块对应的操作。
在一实施例中，如图14所示，提供了一种光伏设备分组方法，以该方法应用于图1或图2中的光伏系统中的光伏设备为例进行说明，包括以下步骤：
S1401：各所述光伏设备与所述管理模块通信，以实现各所述光伏组串中的多个光伏设备中的第一光伏设备的确定，所述第一光伏设备用于确定与其位于同一光伏组串的第二光伏设备；
S1402：各所述第二光伏设备根据各所述第一光伏设备与所述管理模块通信过程中所发送的回执信 号，生成各所述第二光伏设备的分组信息；其中，所述分组信息用于实现各所述光伏设备的分组。
在该实施例中，各所述光伏设备与所述管理模块通信，以实现各所述光伏组串中的多个光伏设备中的第一光伏设备的确定，各所述第二光伏设备根据各所述第一光伏设备与所述管理模块通信过程中所发送的回执信号的信号特征，生成各所述第二光伏设备的分组信息。本申请实现了光伏设备的自动分组，提高了分组效率。
在一实施例中，所述各所述光伏设备与所述管理模块通信，以实现各所述光伏组串中的多个光伏设备中的第一光伏设备的确定包括：
各所述光伏设备接收所述管理模块发送的第一信号指令；
响应于所述第一信号指令的光伏设备向所述管理模块发送第一回执信号，所述第一回执信号用于确定多个光伏设备中的第一光伏设备，所述第一回执信号包括对应光伏设备的设备信息。
在一实施例中，所述各所述光伏设备与所述管理模块通信，以实现各所述光伏组串中的多个光伏设备中的第一光伏设备的确定还包括：
各所述光伏设备接收所述管理模块发送的第二信号指令，各所述光伏设备接收所述管理模块发送的第二信号指令，所述第二信号指令包括用于确定与相应的第一光伏设备位于同一光伏组串的第二光伏设备及其分组信息的信号阈值。
在一实施例中，基于所述第一回执信号的信号特征和相应的信号阈值确定第二光伏设备。
在一实施例中，所述方法还包括：
各所述第二光伏设备接收所述管理模块发送的第三信号指令；
响应于所述第三信号指令的第二光伏设备向所述管理模块发送第三回执信号，所述第三回执信号包括对应第二光伏设备的分组信息和/或标识信息。
在一实施例中，所述第一信号指令为状态采集指令，包括光伏设备的标识信息，与标识信息相应的光伏设备回复第一回执信号，所述设备信息包括对应光伏设备的状态标识，所述状态标识用于标识对应光伏设备是否为第二光伏设备。
在一实施例中，所述第一信号指令为第一光伏设备搜索指令，竞答所述第一光伏设备搜索指令成功的光伏设备回复第一回执信号，所述设备信息包括对应光伏设备的标识信息。
在一实施例中，所述分组信息由各所述第二光伏设备根据各所述第一回执信号的信号特征以及相应的信号阈值所确定。
在一实施例中，所述信号特征包括信号强度、信号阻抗、信号衰减度中的一种。
在一实施例中，所述分组信息由各所述第二光伏设备根据各所述第一回执信号的信号强度与相应的信号阈值的差值排序中的最大差值所确定。
在一实施例中，在各所述第二光伏设备接收到第二信号指令，且判断其接收到的第一回执信号中所携带的光伏设备的标识信息与所述第二信号指令中所携带的光伏设备的标识信息一致的情况下，生成所述分组信息。
在一实施例中，在所述第二光伏设备没有接收到第一回执信号且接收到多个所述第二信号指令的情况下，所述分组信息由所述第二光伏设备根据各所述第二回执信号的信号特征以及相应的信号阈值所确定。
在一实施例中，所述第三信号指令包括分组信息上报指令，所述分组信息上报指令包括所指定的第二光伏设备的标识信息，相应的第二光伏设备上报其分组信息。
在一实施例中，所述第三信号指令为第二光伏设备搜索指令，竞答所述第二光伏设备搜索指令成功 的第二光伏设备上报其分组信息和/或标识信息。
关于该实施例中光伏设备分组方法的具体限定可以参见上文中对于光伏设备分组方法的限定，在此不再赘述。
如图15所示，本申请提供了一种光伏设备，应用于图1或图2所示的光伏系统，所述光伏设备包括：
第二确定模块1501，用于所述光伏设备与所述管理模块之间的通信，以实现各所述光伏组串中的多个光设备中的第一光伏设备的确定，所述第一光伏设备用于确定与其位于同一光伏组串的第二光伏设备；
第三确定模块1502，用于根据各所述第一光伏设备与所述管理模块通信过程中所发送的回执信号，确定各所述第二光伏设备的分组信息；其中，所述分组信息用于实现各所述光伏设备的分组。
在一实施例中，所述第二确定模块具体用于：
各所述光伏设备接收所述管理模块发送的第一信号指令；
响应于所述第一信号指令的光伏设备向所述管理模块发送第一回执信号，所述第一回执信号用于确定多个光伏设备中的第一光伏设备，所述第一回执信号包括对应光伏设备的设备信息。
在一实施例中，所述第二确定模块具体还用于：
各所述光伏设备接收所述管理模块发送的第二信号指令，所述第二信号指令包括用于确定与相应的第一光伏设备位于同一光伏组串的第二光伏设备及其分组信息的信号阈值。
在一实施例中，基于所述第一回执信号的信号特征和相应的信号阈值确定第二光伏设备。
在一实施例中，所述第三确定模块具体用于：
各所述光伏设备接收所述管理模块发送的第三信号指令；
响应于所述第三信号指令的第二光伏设备向所述管理模块发送第三回执信号，所述第三回执信号包括对应第二光伏设备的分组信息和/或标识信息。
在一实施例中，所述第一信号指令为状态采集指令，包括光伏设备的标识信息，与标识信息相应的光伏设备回复第一回执信号，所述设备信息包括对应光伏设备的状态标识，所述状态标识用于标识对应光伏设备是否为第二光伏设备。
在一实施例中，在一实施例中，所述第一信号指令为第一光伏设备搜索指令，竞答所述第一光伏设备搜索指令成功的光伏设备回复第一回执信号，所述设备信息包括对应光伏设备的标识信息。
在一实施例中，所述分组信息由各所述第二光伏设备根据各所述第一回执信号的信号特征以及相应的信号阈值所确定。
在一实施例中，所述信号特征包括信号强度、信号阻抗、信号衰减度中的一种。
在一实施例中，所述分组信息由各所述第二光伏设备根据各所述第一回执信号的信号强度与相应的信号阈值的差值排序中的最大差值所确定。
在一实施例中，在各所述第二光伏设备接收到第二信号指令，且判断其接收到的第一回执信号中所携带的光伏设备的标识信息与所述第二信号指令中所携带的光伏设备的标识信息一致的情况下，生成所述分组信息。
在一实施例中，在所述第二光伏设备没有接收到第一回执信号且接收到多个所述第二信号指令的情况下，所述分组信息由所述第二光伏设备根据各所述第二回执信号的信号特征以及相应的信号阈值所确定。
在一实施例中，所述第三信号指令包括分组信息上报指令，所述分组信息上报指令包括所指定的第 二光伏设备的标识信息，相应的第二光伏设备上报其分组信息。
在一实施例中，所述第三信号指令为第二光伏设备搜索指令，竞答所述第二光伏设备搜索指令成功的第二光伏设备上报其分组信息和/或标识信息。
关于光伏设备的具体限定可以参见上文中对于光伏设备分组方法的限定，在此不再赘述。上述光伏设备中的各个模块可全部或部分通过软件、硬件及其组合来实现。上述各模块可以硬件形式内嵌于或独立于计算机设备中的处理器中，也可以以软件形式存储于计算机设备中的存储器中，以便于处理器调用执行以上各个模块对应的操作。
在一实施例中，提供了一种计算机设备，该计算机设备可以是服务器，其内部结构图可以如图16所示。该计算机设备包括通过系统总线连接的处理器、存储器和网络接口。其中，该计算机设备的处理器用于提供计算和控制能力。该计算机设备的存储器包括非易失性存储介质、内存储器。该非易失性存储介质存储有操作系统、计算机程序和数据库。该内存储器为非易失性存储介质中的操作系统和计算机程序的运行提供环境。该计算机设备的数据库用于存储动作检测数据。该计算机设备的网络接口用于与外部的终端通过网络连接通信。该计算机程序被处理器执行时以实现上述任一项光伏设备分组方法实施例中的步骤。
本领域技术人员可以理解，图16中示出的结构，仅仅是与本申请方案相关的部分结构的框图，并不构成对本申请方案所应用于其上的计算机设备的限定，具体的计算机设备可以包括比图中所示更多或更少的部件，或者组合某些部件，或者具有不同的部件布置。
在一实施例中，提供了一种计算机设备，包括存储器和处理器，存储器中存储有计算机程序，该处理器执行计算机程序时实现上述任一项光伏设备分组方法实施例中的步骤。
在一实施例中，提供了一种计算机可读存储介质，其上存储有计算机程序，计算机程序被处理器执行时实现上述任一项光伏设备分组方法实施例中的步骤。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分流程，是可以通过计算机程序来指示相关的硬件来完成，计算机程序可存储于一非易失性计算机可读取存储介质中，该计算机程序在执行时，可包括如上述各方法的实施例的流程。其中，本申请所提供的各实施例中所使用的对存储器、存储介质、数据库或其它介质的任何引用，均可包括非易失性和易失性存储器中的至少一种。非易失性存储器可包括只读存储器(Read-OnlyMemory，ROM)、磁带、软盘、闪存或光存储器等。易失性存储器可包括随机存取存储器(RandomAccessMemory，RAM)或外部高速缓冲存储器。作为说明而非局限，RAM可以是多种形式，比如静态随机存取存储器(StaticRandomAccessMemory，SRAM)或动态随机存取存储器(DynamicRandomAccessMemory，DRAM)等。
以上实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。
以上实施例仅表达了本申请的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对申请专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本申请构思的前提下，还可以做出若干变形和改进，这些都属于本申请的保护范围。因此，本申请专利的保护范围应以所附权利要求为准。

Claims (32)

  1. 一种光伏设备分组方法，应用于光伏系统中的管理模块，所述光伏系统还包括多个光伏组串，所述光伏组串包括串联连接的多个光伏设备以及分别与各所述光伏设备连接的光伏组件，其特征在于，所述方法包括：
    基于与各所述光伏设备之间的通信，确定各所述光伏组串中的多个光伏设备中的第一光伏设备，所述第一光伏设备用于确定与其位于同一光伏组串的第二光伏设备；
    基于各所述第二光伏设备的分组信息实现对各所述光伏设备的分组，其中，所述分组信息由各所述第二光伏设备根据各所述第一光伏设备与所述管理模块通信过程中所发送的回执信号所确定。
  2. 根据权利要求1所述的方法，其中，所述基于与各所述光伏设备之间的通信，确定各所述光伏组串中的多个光伏设备中的第一光伏设备包括：
    向各所述光伏设备发送第一信号指令；
    接收响应于所述第一信号指令的光伏设备所发送的第一回执信号，并基于所述第一回执信号确定多个光伏设备中的第一光伏设备，所述第一回执信号包括对应光伏设备的设备信息。
  3. 根据权利要求2所述的方法，其中，所述基于与各所述光伏设备之间的通信，确定各所述光伏组串中的多个光伏设备中的第一光伏设备还包括：
    向各所述光伏设备发送第二信号指令，所述第二信号指令包括用于确定与相应的第一光伏设备位于同一光伏组串的第二光伏设备及其分组信息的信号阈值。
  4. 根据权利要求1所述的方法，其中，所述基于各所述第二光伏设备的分组信息实现各所述光伏设备的分组包括：
    向各所述第二光伏设备发送第三信号指令；
    接收响应于所述第三信号指令的第二光伏设备所发送的第三回执信号，所述第三回执信号包括对应第二光伏设备的分组信息和/或标识信息。
  5. 根据权利要求2或权利要求4所述的方法，其中，所述方法还包括：
    向各所述光伏设备发送第四信号指令，所述第四信号指令用于告知各所述第二光伏设备已被注册。
  6. 根据权利要求2所述的方法，其中，所述第一信号指令为状态采集指令，包括光伏设备的标识信息，与标识信息相应的光伏设备回复第一回执信号，所述设备信息包括对应光伏设备的状态标识，所述状态标识用于标识对应光伏设备是否为第二光伏设备；所述基于所述第一回执信号确定多个光伏设备中的第一光伏设备包括：
    根据所述第一回执信号中的状态标识确定对应光伏设备是否为第二光伏设备；若不是第二光伏设备，则确定对应光伏设备为第一光伏设备。
  7. 根据权利要求2所述的方法，其中，所述第一信号指令为第一光伏设备搜索指令，竞答所述第一光伏设备搜索指令成功的光伏设备回复第一回执信号，基于所述第一回执信号确定对应的光伏设备为第一光伏设备，所述设备信息包括对应光伏设备的标识信息。
  8. 根据权利要求3所述的方法，其中，所述分组信息由各所述第二光伏设备根据各所述第一回执信号的信号特征以及相应的信号阈值所确定。
  9. 根据权利要求8所述的方法，其特征在于，所述信号特征包括信号强度、信号阻抗、信号衰减度中的一种。
  10. 根据权利要求9所述的方法，其中，所述分组信息由各所述第二光伏设备根据各所述第一回执信号的信号强度与相应的信号阈值的差值排序中的最大差值所确定。
  11. 根据权利要求3所述的方法，其中，在各所述第二光伏设备接收到第二信号指令，且判断其接收到的第一回执信号中所携带的光伏设备的标识信息与所述第二信号指令中所携带的光伏设备的标识信息一致的情况下，生成所述分组信息。
  12. 根据权利要求3所述的方法，其中，重复发送所述第二信号指令，所述分组信息由所述第二光伏设备根据各所述第一光伏设备响应于所述第二信号指令的所发送的第二回执信号的信号特征以及相应的信号阈值所确定。
  13. 根据权利要求4所述的方法，其中，所述第三信号指令为分组信息上报指令，所述分组信息上报指令包括所指定的第二光伏设备的标识信息，用于指示相应的第二光伏设备上报其分组信息。
  14. 根据权利要求4所述的方法，其中，所述第三信号指令为第二光伏设备搜索指令，竞答所述第二光伏设备搜索指令成功的第二光伏设备上报其分组信息和/或标识信息。
  15. 一种管理模块，应用于光伏系统，所述光伏系统还包括多个光伏组串，所述光伏组串包括串联连接的多个光伏设备以及分别与各所述光伏设备连接的光伏组件，其特征在于，所述管理模块包括：
    第一确定模块，用于基于与各所述光伏设备之间的通信，确定各所述光伏组串中的多个光伏设备中的第一光伏设备，所述第一光伏设备用于确定与其位于同一光伏组串的第二光伏设备；
    分组模块，用于基于各所述第二光伏设备的分组信息实现对各所述光伏设备的分组，其中，所述分组信息由各所述第二光伏设备根据各所述第一光伏设备与所述管理模块通信过程中所发送的回执信号所确定。
  16. 一种光伏设备分组方法，应用于光伏系统中的光伏设备，所述光伏系统包括多个光伏组串以及管理模块，所述光伏组串包括多个所述光伏设备以及分别与各所述光伏设备连接的光伏组件，其特征在于，所述方法包括：
    各所述光伏设备与所述管理模块通信，以实现各所述光伏组串中的多个光伏设备中的第一光伏设备的确定，所述第一光伏设备用于确定与其位于同一光伏组串的第二光伏设备；
    各所述第二光伏设备根据各所述第一光伏设备与所述管理模块通信过程中所发送的回执信号，生成各所述第二光伏设备的分组信息；其中，所述分组信息用于实现各所述光伏设备的分组。
  17. 根据权利要求16所述的方法，其中，所述各所述光伏设备与所述管理模块通信，以实现各所述光伏组串中的多个光伏设备中的第一光伏设备的确定包括：
    各所述光伏设备接收所述管理模块发送的第一信号指令；
    响应于所述第一信号指令的光伏设备向所述管理模块发送第一回执信号，所述第一回执信号用于确定多个光伏设备中的第一光伏设备，所述第一回执信号包括对应光伏设备的设备信息。
  18. 根据权利要求17所述的方法，其中，所述各所述光伏设备与所述管理模块通信，以实现各所述光伏组串中的多个光伏设备中的第一光伏设备的确定还包括：
    各所述光伏设备接收所述管理模块发送的第二信号指令，所述第二信号指令包括用于确定与相应的第一光伏设备位于同一光伏组串的第二光伏设备及其分组信息的信号阈值。
  19. 根据权利要求18所述的方法，其中，基于所述第一回执信号的信号特征和相应的信号阈值确定第二光伏设备。
  20. 根据权利要求16所述的方法，其中，所述方法还包括：
    各所述光伏设备接收所述管理模块发送的第三信号指令；
    响应于所述第三信号指令的第二光伏设备向所述管理模块发送第三回执信号，所述第三回执信号包括对应第二光伏设备的分组信息和/或标识信息。
  21. 根据权利要求17所述的方法，其中，所述第一信号指令为状态采集指令，包括光伏设备的标识信息，与标识信息相应的光伏设备回复所述第一回执信号，所述设备信息包括对应光伏设备的状态标识，所述状态标识用于标识对应光伏设备是否为第二光伏设备。
  22. 根据权利要求17所述的方法，其中，所述第一信号指令为第一光伏设备搜索指令，竞答所述第一光伏设备搜索指令成功的光伏设备回复第一回执信号，所述设备信息包括对应光伏设备的标识信息。
  23. 根据权利要求18所述的方法，其中，所述分组信息由各所述第二光伏设备根据各所述第一回执信号的信号特征以及相应的信号阈值所确定。
  24. 根据权利要求23所述的方法，其中，所述信号特征包括信号强度、信号阻抗、信号衰减度中的一种。
  25. 根据权利要求24所述的方法，其中，所述分组信息由各所述第二光伏设备根据各所述第一回执信号的信号强度与相应的信号阈值的差值排序中的最大差值所确定。
  26. 根据权利要求18所述的方法，其中，在各所述第二光伏设备接收到第二信号指令，且判断其接收到的第一回执信号中所携带的光伏设备的标识信息与所述第二信号指令中所携带的光伏设备的标识信息一致的情况下，生成所述分组信息。
  27. 根据权利要求18所述的方法，其中，在所述第二光伏设备没有接收到第一回执信号且接收到多个所述第二信号指令的情况下，所述分组信息由所述第二光伏设备根据各第二回执信号的信号特征以及相应的信号阈值所确定。
  28. 根据权利要求20所述的方法，其中，所述第三信号指令为分组信息上报指令，所述分组信息上报指令包括所指定的第二光伏设备的标识信息，相应的第二光伏设备上报其分组信息。
  29. 根据权利要求20所述的方法，其中，所述第三信号指令为第二光伏设备搜索指令，竞答所述第二光伏设备搜索指令成功的第二光伏设备上报其分组信息和/或标识信息。
  30. 一种光伏设备，应用于光伏系统，所述光伏系统包括多个光伏组串以及管理模块，所述光伏组串包括多个光伏设备以及分别与各所述光伏设备连接的光伏组件，其特征在于，所述光伏设备包括：
    第二确定模块，用于所述光伏设备与所述管理模块之间的通信，以实现各所述光伏组串中的多个光设备中的第一光伏设备的确定，所述第一光伏设备用于确定与其位于同一光伏组串的第二光伏设备；
    第三确定模块，用于根据各所述第一光伏设备与所述管理模块通信过程中所发送的回执信号，确定各所述第二光伏设备的分组信息；其中，所述分组信息用于实现各所述光伏设备的分组。
  31. 一种光伏系统，其特征在于，包括多个光伏组串以及如权利要求15所述的管理模块，所述光伏组串包括多个如权利要求30所述的光伏设备以及分别与各所述光伏设备连接的光伏组件。
  32. 一种计算机可读存储介质，其上存储有计算机程序，其特征在于，所述计算机程序被处理器执行时，实现权利要求1至权利要求14中任一项或权利要求16至权利要求29中任一项所述的方法的步骤。
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