Photovoltaic tracking system and ad hoc network method

Abstract

The application belongs to the technical field of photovoltaic, and provides a self-organizing network method of a photovoltaic tracking system. The photovoltaic tracking system comprises a plurality of photovoltaic sub-arrays. Each photovoltaic sub-array comprises a photovoltaic communication box and a plurality of photovoltaic control boxes in communication with the photovoltaic communication box. The method comprises the following steps: receiving unique identification information of the photovoltaic control box and entering the unique identification information of the photovoltaic control box into a communication white list of the photovoltaic communication box; a WISUN center module of the photovoltaic communication box filters a network access request of the photovoltaic control box based on the communication white list; and if the photovoltaic control box is located in the communication white list, the network access request of the photovoltaic control box is accepted. The application realizes a photovoltaic tracking system communication with single network, multiple nodes, fast self-organizing network and fast data transmission.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic technology, and in particular to a photovoltaic tracking system and a self-organizing network method. Background Technology

[0002] Currently, the most commonly used wireless communication technologies in photovoltaic (PV) tracking systems are LoRa and Zigbee, each with its own advantages and disadvantages. For LoRa solutions, due to the long transmission distance of LoRa modules, a star-shaped network topology is generally used. The advantages of this approach are simple network structure, easy debugging, and fast data upload speed. It is also directly compatible with traditional wired RS-485 solutions and is widely used in tracking bracket systems. Its disadvantage is that in projects with complex terrain, PV brackets and modules can strongly obstruct wireless signals, causing signals from some LoRa modules in the control box to fail to reach the LoRa modules in the communication box, resulting in signal loss and communication interruption. For Zigbee solutions, the advantage is the use of a self-organizing network, which can overcome signal loss caused by complex terrain. Its disadvantages are a smaller number of individual network nodes, higher hop count, and slower signal transmission speed. Summary of the Invention

[0003] To address this problem, the present invention provides a photovoltaic tracking system and a self-organizing network method.

[0004] To achieve the above-mentioned objectives of this invention, the invention is implemented through the following techniques:

[0005] On one hand, the present invention provides a self-organizing network method for a photovoltaic tracking system, the photovoltaic tracking system comprising a plurality of photovoltaic subarrays, each photovoltaic subarray comprising a photovoltaic communication box and a plurality of photovoltaic control boxes communicating with the photovoltaic communication box, including:

[0006] Receive the unique identification information of the photovoltaic control box and enter the unique identification information of the photovoltaic control box into the communication whitelist of the photovoltaic communication box;

[0007] The WISUN central module of the photovoltaic communication box filters the network access requests of the photovoltaic control box based on the communication whitelist;

[0008] If the photovoltaic control box is in the communication whitelist, then the network access request of the photovoltaic control box will be approved.

[0009] In some embodiments, receiving the unique identification information of the photovoltaic control box includes:

[0010] The unique identification information of the photovoltaic control box is obtained by scanning the unique identification code of the photovoltaic control box within the photovoltaic subarray using debugging equipment.

[0011] The debugging equipment transmits the unique identification information of the photovoltaic control box to the photovoltaic communication box.

[0012] In some embodiments, before the WISUN central module of the photovoltaic communication box filters the grid access request of the photovoltaic control box based on the communication whitelist, the method further includes:

[0013] Based on commands from the host computer, the photovoltaic communication box sends the unique identification information of the photovoltaic control box to the communication whitelist of the WISUN central module of the photovoltaic communication box.

[0014] In some embodiments, the WISUN central module of the photovoltaic communication box filters the network access requests of the photovoltaic control box based on the communication whitelist, including:

[0015] The WISUN central module enables the whitelist function;

[0016] Receive the network access request sent by the WISUN node module of the photovoltaic control box, and compare whether the photovoltaic control box is in the communication whitelist of the photovoltaic communication box;

[0017] If the photovoltaic control box is in the communication whitelist of the photovoltaic communication box, then the network access request is sent through the WISUN node module of the photovoltaic control box.

[0018] If the photovoltaic control box is not in the communication whitelist of the photovoltaic communication box, the network access request sent by the WISUN node module of the photovoltaic control box will be rejected.

[0019] In some embodiments, the unique identification information of the photovoltaic control box includes the MAC address information of the WISUN node module in the photovoltaic control box and / or the number information of the photovoltaic control box.

[0020] In some embodiments, before the WISUN central module of the photovoltaic communication box filters the grid access request of the photovoltaic control box based on the communication whitelist, it further includes:

[0021] When the photovoltaic communication box is powered on, the self-organizing network is started based on the self-organizing network communication protocol stored in the WISUN central module.

[0022] In some embodiments, after the WISUN central module initiates the self-organizing network, before filtering the network access requests of the photovoltaic control box based on the communication whitelist, the method further includes:

[0023] The photovoltaic communication box queries whether the whitelist function of the WISUN central module is enabled based on the query command sent by the host computer, and feeds back the query result to the host computer.

[0024] In some embodiments, when the photovoltaic control box needs to be replaced and reconnection is required, the system further includes:

[0025] The host computer sends a replacement command to the photovoltaic communication box within the photovoltaic subarray.

[0026] Remove the original photovoltaic control box from the communication whitelist of the photovoltaic communication box, and add the replaced photovoltaic control box to the communication whitelist of the photovoltaic communication box based on the unique identification information of the replaced photovoltaic control box.

[0027] In some embodiments, it also includes:

[0028] Once each photovoltaic subarray is connected to the SCADA system via a fiber optic ring network, the photovoltaic subarray is managed through the SCADA system.

[0029] Once communication is established between each of the photovoltaic subarrays, the sensor data acquired by each photovoltaic subarray is shared.

[0030] In some embodiments, the present invention also provides a photovoltaic tracking system, the photovoltaic tracking system comprising a plurality of photovoltaic subarrays, each photovoltaic subarray comprising a photovoltaic communication box and a plurality of photovoltaic control boxes communicating with the photovoltaic communication box, characterized in that the self-organizing network method of the photovoltaic tracking system comprises:

[0031] The debugging equipment is used to scan the unique identification code of the photovoltaic control box to identify the unique identification information of the photovoltaic control box and transmit the unique identification information of the photovoltaic control box to the photovoltaic communication box;

[0032] The photovoltaic communication box is used to receive the unique identification information of the photovoltaic control box and enter the unique identification information of the photovoltaic control box into the communication whitelist of the photovoltaic communication box. The photovoltaic communication box includes a WISUN central module.

[0033] The photovoltaic communication box is also used by the WISUN central module to filter the network access requests of the photovoltaic control box based on the communication whitelist;

[0034] The photovoltaic communication box is also used to, if the photovoltaic control box is in the communication whitelist of the photovoltaic communication box, complete the configuration of all photovoltaic control boxes in the photovoltaic subarray through the network access request of the photovoltaic control box. The photovoltaic tracking system and self-organizing network method provided by this invention have at least the following beneficial effects: The WISUN technology adopted by this invention solves the wireless communication problem faced by photovoltaic tracking systems, realizing multi-node communication in a single network, and enabling rapid self-organizing and fast data transmission in photovoltaic tracking systems. Attached Figure Description

[0035] The preferred embodiments will be described below in a clear and easy-to-understand manner, with reference to the accompanying drawings, to further explain the above-mentioned characteristics, technical features, advantages, and implementation methods of a photovoltaic tracking system and self-organizing network method.

[0036] Figure 1 This is a schematic diagram of an embodiment of a self-organizing network method for a photovoltaic tracking system according to the present invention;

[0037] Figure 2 This is a schematic diagram of another embodiment of a self-organizing network method for a photovoltaic tracking system according to the present invention;

[0038] Figure 3 This is a schematic diagram of the WISUN network communication structure. Detailed Implementation

[0039] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of this application. However, those skilled in the art will understand that this application can also be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods have been omitted so as not to obscure the description of this application with unnecessary detail.

[0040] It should be understood that, when used in this specification and the appended claims, the term "comprising" indicates the presence of the described features, integrals, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or sets.

[0041] To keep the drawings concise, only the parts relevant to the invention are shown schematically in each figure, and they do not represent the actual structure of the product. Furthermore, for ease of understanding, in some figures, only one of components with the same structure or function is shown schematically, or only one is labeled. In this document, "one" can mean not only "only one" but also "more than one".

[0042] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0043] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0044] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.

[0045] It should be noted that Wi-SU (WISUN), short for Wireless Utility Networks, is a collective term for a series of standard wireless communication networks based on the IEEE 802.15.4 underlying protocol. It mainly includes Wi-SUNFAN (Wireless Utility Field Area Network) and Wi-SUNHAN (Wireless Home Area Network).

[0046] In one embodiment, such as Figure 1 As shown, this invention provides an embodiment of a self-organizing network method for a photovoltaic (PV) tracking system. In one aspect, the invention provides a self-organizing network method for a PV tracking system, wherein the PV tracking system includes several PV subarrays, each PV subarray including a PV communication box and multiple PV control boxes communicating with the PV communication box, comprising:

[0047] S101 receives the unique identification information of the photovoltaic control box and enters the unique identification information of the photovoltaic control box into the communication whitelist of the photovoltaic communication box.

[0048] The unique identification information includes the MAC address of the WISUN node module in the photovoltaic control box.

[0049] In this embodiment, in order to realize the application of WISUN technology in the photovoltaic tracking system, the main development work includes: customizing a professional communication module suitable for photovoltaic tracker manufacturers based on the purchased WISUN communication module.

[0050] WISUN wireless modules come in two types: gateway modules, installed on the communication box, and node modules, installed on the tracker control box. Communication software suitable for photovoltaic manufacturers is developed based on the WISUN module's communication interface and networking method. The main tasks of the software include configuring communication packets and unpacking, and configuring self-organizing network parameters according to the WISUN module's unique communication format.

[0051] To simplify on-site commissioning and make it more suitable for photovoltaic tracking system applications, this invention proposes an implementation scheme.

[0052] Before leaving the factory, WISUN modules are configured with uniform factory networking parameters, and a MAC address with a unique module identification mark is affixed to the tracker control box.

[0053] After the product is installed on site, during the initial debugging, the QR code label on the control box label, which is the MAC address of the WISUN module, is scanned and saved to the debugging device using a handheld debugging device. After the entire subarray is scanned, the MAC address list is imported into the Flash memory of the MCU of the subarray communication box through the debugging interface.

[0054] The WISUN central module of the photovoltaic communication box described in S102 filters the network access requests of the photovoltaic control box based on the communication whitelist.

[0055] For example, when the WISUN central module of the photovoltaic communication box starts the self-organizing network, it filters the network access requests of the photovoltaic control box based on the communication whitelist of the photovoltaic communication box.

[0056] In this embodiment, when the device is powered on, the WISUN gateway module on the communication box starts the self-organizing network. Since the WISUN node modules of other subarrays in this project also have the same factory parameters, they may also enter this network when they first form a network.

[0057] The WISUN central module and the WISUN node module have different functions. One is the central module, which is responsible for establishing the network, while the other can only perform routing functions. This is determined by the WISUN networking protocol.

[0058] Therefore, the communication box program will enable the whitelist mode of the WISUN gateway module based on the imported MAC address, so that only the modules of this sub-array can enter this network.

[0059] One communication box establishes a network that can only communicate with the control box of its own subarray; control boxes of other subarrays cannot join this network.

[0060] S103 If the photovoltaic control box is in the communication whitelist, then the network access request of the photovoltaic control box is approved.

[0061] For example, if the photovoltaic control box is in the communication whitelist of the photovoltaic communication box, the configuration will be completed through the network access request of the photovoltaic control box until all photovoltaic control boxes in the photovoltaic subarray are configured.

[0062] In this embodiment, the configuration work for the network debugging phase is completed, including configuring the network name for mass transmission, configuring the network channel, and initializing the node trackers by numbering them.

[0063] After the initial network configuration is complete, no further configuration is needed after the next power outage; the network can be established directly. Once the network is established, the communication box and the tracker can communicate for data acquisition and control command issuance according to their respective manufacturers' proprietary application-layer communication protocols.

[0064] The test results show that the WISUN communication module and configuration method of this invention are simple to debug on site, have good communication performance, and solve some problems existing in LoRa and Zigbee communication methods.

[0065] The WISUN technology employed in this invention solves the wireless communication problem faced by photovoltaic tracking systems, enabling communication in photovoltaic tracking systems with multiple nodes in a single network, rapid self-organization, and fast data transmission.

[0066] In one embodiment, receiving the unique identification information of the photovoltaic control box includes:

[0067] The unique identification information of the photovoltaic control box is obtained by scanning the unique identification code of the photovoltaic control box within the photovoltaic subarray using debugging equipment.

[0068] The debugging equipment transmits the unique identification information of the photovoltaic control box to the photovoltaic communication box.

[0069] Each WISUN module has a unique MAC address. In addition to the MAC address, each control box should also have its own identification number. A correspondence is established within the communication box, which allows for easy identification of which communication box is receiving information from which control box.

[0070] Therefore, the unique identifier of the photovoltaic control box in this embodiment carries not only the MAC address of the WISUN node module of the photovoltaic control box, but also the number of the photovoltaic control box.

[0071] In one embodiment, before the WISUN central module of the photovoltaic communication box filters the grid access request of the photovoltaic control box based on the communication whitelist of the photovoltaic communication box, it further includes:

[0072] Based on commands from the host computer, the photovoltaic communication box sends the unique identification information of the photovoltaic control box to the communication whitelist of the WISUN central module of the photovoltaic communication box.

[0073] In one embodiment, the WISUN central module of the photovoltaic communication box filters the network access requests of the photovoltaic control box based on the communication whitelist. The WISUN central module includes:

[0074] The WISUN central module enables the whitelist function;

[0075] Receive the network access request sent by the WISUN node module of the photovoltaic control box, and compare whether the photovoltaic control box is in the communication whitelist of the photovoltaic communication box;

[0076] If the photovoltaic control box is in the communication whitelist of the photovoltaic communication box, then the network access request is sent through the WISUN node module of the photovoltaic control box.

[0077] If the photovoltaic control box is not in the communication whitelist of the photovoltaic communication box, the network access request sent by the WISUN node module of the photovoltaic control box will be rejected.

[0078] For example, when the WISUN central module of the photovoltaic communication box starts the self-organizing network, the WISUN central module activates the whitelist function. If it receives a network access request from the WISUN node module of the photovoltaic control box, it compares the MAC address of the WISUN node module of the photovoltaic control box with the communication whitelist of the photovoltaic communication box. If the MAC address of the WISUN node module of the photovoltaic control box is in the communication whitelist, the network access request sent by the WISUN node module of the photovoltaic control box is accepted. If the MAC address of the WISUN node module of the photovoltaic control box is not in the communication whitelist, the network access request sent by the WISUN node module of the photovoltaic control box is rejected.

[0079] In one embodiment, the unique identification information of the photovoltaic control box includes the MAC address information of the WISUN node module in the photovoltaic control box and / or the number information of the photovoltaic control box.

[0080] The unique identification information includes not only the MAC address of the WISUN node module in the photovoltaic control box, but also the number of the photovoltaic control box.

[0081] In this invention, identification can be performed solely based on the MAC address or the control box number.

[0082] In practical applications, the control box number is temporarily assigned based on the installation location during on-site installation and commissioning. After scanning the control box's QR code, the MAC address of the WISUN module is obtained, and the control box number is manually entered. This combines the MAC address and the control box number. Then, the control box number and MAC address are imported into the communication box. Based on the MAC address, it is easy to identify the specific photovoltaic control box.

[0083] In one embodiment, before the WISUN central module of the photovoltaic communication box filters the grid access request of the photovoltaic control box based on the communication whitelist, it further includes:

[0084] When the photovoltaic communication box is powered on, the self-organizing network is started based on the self-organizing network communication protocol stored in the WISUN central module.

[0085] In one embodiment, if the photovoltaic control box is located in the communication whitelist of the photovoltaic communication box, then the configuration is completed through the grid access request of the photovoltaic control box until all photovoltaic control boxes in the photovoltaic subarray are configured, including:

[0086] The configuration operation for the photovoltaic control box in the photovoltaic subarray is carried out during the network commissioning phase. The configuration operation includes configuring the group transmission network name, configuring the network channel, and initializing the number of the photovoltaic control box.

[0087] In one embodiment, after the WISUN central module initiates the self-organizing network, before filtering the photovoltaic control box's network access request based on the communication whitelist, the method further includes:

[0088] The photovoltaic communication box queries whether the whitelist function of the WISUN central module is enabled based on the query command sent by the host computer, and feeds back the query result to the host computer.

[0089] For example, when the photovoltaic communication box receives a query command sent by the host computer, the photovoltaic communication box queries whether the whitelist function of the WISUN central module of the photovoltaic communication box is enabled based on the query command, and feeds back the query result to the host computer.

[0090] In one embodiment, it also includes:

[0091] Based on commands from the host computer, the photovoltaic communication box downloads the MAC address of the WISUN node module in the photovoltaic control box to the communication whitelist of the WISUN central module in the photovoltaic communication box.

[0092] In one embodiment, when the photovoltaic control box needs to be replaced and reconnection is required, the system further includes:

[0093] The host computer sends a replacement command to the photovoltaic communication box within the photovoltaic subarray.

[0094] Remove the original photovoltaic control box from the communication whitelist of the photovoltaic communication box, and add the replaced photovoltaic control box to the communication whitelist of the photovoltaic communication box based on the unique identification information of the replaced photovoltaic control box.

[0095] Specifically, when the photovoltaic control box in the photovoltaic subarray needs to be replaced, the host computer sends a replacement command to the photovoltaic communication box in the photovoltaic subarray; the MAC address of the WISUN node module of the photovoltaic control box is deleted from the communication whitelist of the photovoltaic communication box, and the MAC address of the WISUN node module of the replaced photovoltaic control box is added to the communication whitelist of the photovoltaic communication box.

[0096] In one embodiment, it also includes:

[0097] Once each photovoltaic subarray is connected to the SCADA system via a fiber optic ring network, the photovoltaic subarray is managed through the SCADA system.

[0098] Once communication is established between each of the photovoltaic subarrays, the sensor data acquired by each photovoltaic subarray is shared.

[0099] In this embodiment, for ease of management, each photovoltaic subarray establishes an independent network communication via a wireless network. Different photovoltaic subarrays are connected to the SCADA system through a fiber optic ring network. Communication can also be established between photovoltaic subarrays, primarily for sharing sensor data.

[0100] In one embodiment, such as Figure 2 As shown, the present invention also provides a self-organizing network method for a photovoltaic tracking system, specifically including:

[0101] S1. The debugging equipment scans the control box identification code and saves the identification code to the debugging equipment. The identification code is generated based on the MAC address of the WISUN node module in the control box. The debugging equipment can be a mobile phone, tablet computer, etc.

[0102] S2. The debugging device connects to the communication box via the debugging interface on the communication box and transmits the identified address list information to the communication box. The communication box receives the address list information and saves it to its internal FLASH. The host computer on the communication box can send commands to download the MAC address list from the communication box's FLASH to the whitelist of the gateway WISUN module. The WISUN module has a microcontroller and storage module internally, and it has a self-organizing network communication protocol. As long as the communication box is powered on, that is, the WISUN module is powered on, it will automatically establish a network connection according to the MAC addresses in the whitelist. This internal FLASH is the communication box's storage module, used to store various received information. The WISUN module and the communication box are connected through a communication interface. The host computer sends data packets or configures parameters to the WISUN module through the communication box.

[0103] S3. The WISUN gateway module of the communication box starts the self-organizing network, the host computer starts the whitelist function, and the WISUN node module of the control box sends a pairing request to the communication box. Since the whitelist function has been enabled by the WISUN gateway module of the communication box, the gateway WISUN module will check whether the WISUN node of this control box is in the whitelist. If it is in the whitelist, it is allowed to join the network; otherwise, it is not allowed to join the network.

[0104] S4. After pairing is completed, repeat the previous operation to pair the next control box until all control boxes in the subarray are configured.

[0105] S5. When a control box in a subarray is damaged and needs to be replaced, the MAC address of the original faulty control box's WISUN module must be removed from the whitelist, and the whitelist of the newly replaced control box's WISUN module must be added. Specifically, the host computer sends a deletion command to the communication box, which then sends it to the WISUN gateway module, which then initiates the deletion process. The addition and deletion processes are the same.

[0106] In this embodiment, a query action can be added before network pairing to check whether the whitelist function of the gateway WISUN module has been enabled. Specifically, if the host computer wants to confirm whether the whitelist function is enabled, it sends a query command to the WISUN module through the communication box. After querying, the WISUN module sends the query back to the host computer through the communication box.

[0107] In one embodiment, the present invention also provides a photovoltaic tracking system, the photovoltaic tracking system comprising a plurality of photovoltaic subarrays, each photovoltaic subarray comprising a photovoltaic communication box and a plurality of photovoltaic control boxes controlled by the photovoltaic communication box, and the self-organizing network method of the photovoltaic tracking system comprising:

[0108] The debugging equipment is used to scan the unique identification code of the photovoltaic control box to identify the unique identification information of the photovoltaic control box and transmit the unique identification information of the photovoltaic control box to the photovoltaic communication box;

[0109] The photovoltaic communication box is used to receive the unique identification information of the photovoltaic control box and enter the unique identification information of the photovoltaic control box into the communication whitelist of the photovoltaic communication box. The photovoltaic communication box includes a WISUN central module.

[0110] The photovoltaic communication box is also used by the WISUN central module to filter the network access requests of the photovoltaic control box based on the communication whitelist;

[0111] The photovoltaic communication box is also used to, if the photovoltaic control box is in the communication whitelist of the photovoltaic communication box, then through the network access request of the photovoltaic control box until all photovoltaic control boxes in the photovoltaic subarray have completed configuration.

[0112] This invention proposes using WISUN technology to solve the wireless communication problems currently faced by photovoltaic (PV) tracking systems. WISUN technology is a wireless communication technology that has emerged in the last year or two, primarily used in the smart wireless meter reading industry. For the meter reading application scenario, this technology is also applicable to the PV tracking industry. Its main characteristics are self-organizing networking and low transmission power, which can meet the communication needs of complex terrain. Currently, domestic and international manufacturers have provided WISUN modules. Based on these modules, secondary development can solve the communication problems in PV tracking brackets.

[0113] In this embodiment, the wireless communication problem faced by the photovoltaic tracking system is solved by using WISUN technology, enabling the photovoltaic tracking system to achieve communication with multiple nodes in a single network, as well as rapid self-organization and fast data transmission.

[0114] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the above-described division of program modules is merely an example. In practical applications, the above functions can be assigned to different program modules as needed, that is, the internal structure of the device can be divided into different program units or modules to complete all or part of the functions described above. The program modules in the embodiments can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one processing unit. The integrated unit can be implemented in hardware or as a software program unit. Furthermore, the specific names of the program modules are only for easy differentiation and are not intended to limit the scope of protection of this application.

[0115] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0116] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0117] In the embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; the division of modules or units is merely a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual coupling or direct coupling or communication connection may be through some interface; the indirect coupling or communication connection of apparatus or units may be electrical, mechanical, or other forms.

[0118] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0119] Furthermore, the functional units in the various embodiments of this application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The integrated unit described above can be implemented in hardware or as a software functional unit.

[0120] It should be noted that the above embodiments can be freely combined as needed. The above description is only a preferred embodiment of the present invention. It should be pointed out that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A self-organizing network method for a photovoltaic tracking system, the photovoltaic tracking system comprising a plurality of photovoltaic subarrays, each photovoltaic subarray comprising a photovoltaic communication box and a plurality of photovoltaic control boxes communicating with the photovoltaic communication box, characterized in that, include: By scanning the unique identifier of the photovoltaic control box within the photovoltaic subarray using debugging equipment, the unique identifier information of the photovoltaic control box is obtained. The unique identifier information of the photovoltaic control box includes the MAC address information of the WISUN node module in the photovoltaic control box and / or the number information of the photovoltaic control box. The debugging equipment transmits the unique identification information of the photovoltaic control box to the photovoltaic communication box; Receive the unique identification information of the photovoltaic control box and enter the unique identification information of the photovoltaic control box into the communication whitelist of the photovoltaic communication box; The WISUN central module of the photovoltaic communication box filters the network access requests of the photovoltaic control box based on the communication whitelist; If the photovoltaic control box is in the communication whitelist, then the network access request of the photovoltaic control box will be approved; The WISUN central module of the photovoltaic communication box filters the network access requests of the photovoltaic control box based on the communication whitelist, including: The WISUN central module enables the whitelist function; Receive the network access request sent by the WISUN node module of the photovoltaic control box, and compare whether the photovoltaic control box is in the communication whitelist of the photovoltaic communication box; If the photovoltaic control box is in the communication whitelist of the photovoltaic communication box, then the network access request is sent through the WISUN node module of the photovoltaic control box. If the photovoltaic control box is not in the communication whitelist of the photovoltaic communication box, the network access request sent by the WISUN node module of the photovoltaic control box will be rejected.

2. The self-organizing network method for a photovoltaic tracking system according to claim 1, characterized in that, Before the WISUN central module of the photovoltaic communication box filters the grid access request of the photovoltaic control box based on the communication whitelist, it also includes: Based on commands from the host computer, the photovoltaic communication box sends the unique identification information of the photovoltaic control box to the communication whitelist of the WISUN central module of the photovoltaic communication box.

3. The self-organizing network method for a photovoltaic tracking system according to claim 2, characterized in that, Before the WISUN central module of the photovoltaic communication box filters the network access requests of the photovoltaic control box based on the communication whitelist, it also includes: When the photovoltaic communication box is powered on, the self-organizing network is started based on the self-organizing network communication protocol stored in the WISUN central module.

4. The self-organizing network method for a photovoltaic tracking system according to claim 3, characterized in that, After the WISUN central module starts the self-organizing network, before filtering the network access requests of the photovoltaic control box based on the communication whitelist, the following steps are also included: The photovoltaic communication box queries whether the whitelist function of the WISUN central module is enabled based on the query command sent by the host computer, and feeds back the query result to the host computer.

5. The self-organizing network method for a photovoltaic tracking system according to any one of claims 2-4, characterized in that, When the photovoltaic control box needs to be replaced and reconnection is required, it also includes: The host computer sends a replacement command to the photovoltaic communication box within the photovoltaic subarray. Remove the original photovoltaic control box from the communication whitelist of the photovoltaic communication box, and add the replaced photovoltaic control box to the communication whitelist of the photovoltaic communication box based on the unique identification information of the replaced photovoltaic control box.

6. The self-organizing network method for a photovoltaic tracking system according to any one of claims 1 to 5, characterized in that, Also includes: Once each photovoltaic subarray is connected to the SCADA system via a fiber optic ring network, the photovoltaic subarray is managed through the SCADA system. Once communication is established between each of the photovoltaic subarrays, the sensor data acquired by each photovoltaic subarray is shared.

7. A photovoltaic tracking system, the photovoltaic tracking system comprising a plurality of photovoltaic subarrays, each photovoltaic subarray comprising a photovoltaic communication box and a plurality of photovoltaic control boxes communicating with the photovoltaic communication box, characterized in that, The self-organizing network method for the photovoltaic tracking system as described in any one of claims 1 to 6 includes: The debugging equipment is used to scan the unique identification code of the photovoltaic control box to identify the unique identification information of the photovoltaic control box and transmit the unique identification information of the photovoltaic control box to the photovoltaic communication box; The photovoltaic communication box is used to receive the unique identification information of the photovoltaic control box and enter the unique identification information of the photovoltaic control box into the communication whitelist of the photovoltaic communication box. The photovoltaic communication box includes a WISUN central module. The photovoltaic communication box is also used by the WISUN central module to filter the network access requests of the photovoltaic control box based on the communication whitelist; The photovoltaic communication box is also used to, if the photovoltaic control box is in the communication whitelist of the photovoltaic communication box, then through the network access request of the photovoltaic control box until all photovoltaic control boxes in the photovoltaic subarray have completed configuration.

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