A self-cleaning photovoltaic array system

Abstract

The present invention discloses a self-cleaning photovoltaic array system, which includes a photovoltaic array system, a control system, and a water circulation system, wherein the photovoltaic array system is composed of a plurality of photovoltaic array groups, wherein each photovoltaic array group is arranged at a different part of a target building; the control system is respectively connected to the photovoltaic array system and the water circulation system, and is used to control the water circulation system to supply water to each photovoltaic array by collecting the open-circuit voltage and array temperature of each photovoltaic array group; the water circulation system is used to supply water to the photovoltaic array system; the self-cleaning photovoltaic array system provided by the present invention realizes intelligent cleaning control of the photovoltaic array group, filling the gap in the industry.

Description

Technical Field

[0001] The invention belongs to the field of photovoltaic power generation, and in particular relates to a self-cleaning photovoltaic array system. Background Art

[0002] Photovoltaic modules are solar cell modules. Since the output voltage of a single solar cell is low and the electrodes of unpackaged cells are easily detached due to environmental influences, a certain number of single cells must be sealed into photovoltaic modules in series or parallel to avoid corrosion of the cell electrodes and interconnecting wires. Photovoltaic modules are divided into crystalline silicon solar cell modules and thin-film solar cell modules according to the materials of the solar cells.

[0003] Traditional photovoltaic array groups are composed of different photovoltaic arrays. Each photovoltaic array is composed of several photovoltaic modules. It is not only greatly affected by the geographical and climatic environment, but also very inconvenient to clean, which seriously affects the power generation efficiency. Cleaning the photovoltaic array group is not only time-consuming and labor-intensive, but also has certain risks. In addition, the existing photovoltaic system has weak automation capabilities and cannot judge whether it needs to be cleaned and how to clean it. There is an urgent need for a photovoltaic array system with self-cleaning function, which can not only meet the market demand, but also provide a new digital idea for the photovoltaic field. Summary of the invention

[0004] In order to solve the above problems, the present invention provides a self-cleaning photovoltaic array system, which includes a photovoltaic array system, a control system, and a water circulation system, wherein:

[0005] The photovoltaic array system is composed of several photovoltaic array groups, wherein each photovoltaic array group is arranged at a different part of the target building;

[0006] The control system is connected to the photovoltaic array system and the water circulation system respectively, and is used to control the water circulation system to supply water to each photovoltaic array by collecting the open circuit voltage and array temperature of each photovoltaic array group;

[0007] The water circulation system is used to supply water to the photovoltaic array system.

[0008] Preferably, the photovoltaic array system comprises at least a roof photovoltaic array unit and a photovoltaic curtain wall array unit;

[0009] The roof photovoltaic array unit and the photovoltaic curtain wall array unit are respectively composed of several groups of photovoltaic arrays, each group of photovoltaic arrays is composed of several photovoltaic modules, and each photovoltaic module is composed of several photovoltaic components, among which,

[0010] Each photovoltaic module includes:

[0011] Glass front: The glass front is ultra-clear tempered glass;

[0012] The rear end is a tempered glass, and the rear end also includes a waterway inlet, a waterway, and a waterway outlet arranged inside the tempered glass;

[0013] And, a photovoltaic unit group, the photovoltaic unit group is encapsulated between the glass front and rear ends.

[0014] Preferably, the waterway inlet comprises a longitudinal waterway inlet;

[0015] The waterway outlet includes a horizontal waterway outlet and a longitudinal waterway outlet;

[0016] Waterways include transverse waterways and longitudinal waterways;

[0017] The lateral waterway outlets of the rooftop photovoltaic array units are closed;

[0018] The lateral waterway outlet of the photovoltaic curtain wall array unit is in an open state;

[0019] The longitudinal water flow outlet of each photovoltaic module of the photovoltaic curtain wall array unit is connected to the longitudinal waterway inlet;

[0020] The longitudinal water flow outlet of each photovoltaic module of the roof photovoltaic array unit includes a first outlet and a second outlet, the first outlet is connected to the longitudinal waterway inlet, and the second outlet is used to supply water to the upper surface of the next-level photovoltaic module, wherein the next-level photovoltaic module is used to indicate that according to the trend of the target building, it is divided into several levels of photovoltaic modules from top to bottom, and the photovoltaic module at the top of the target building is taken as the first-level photovoltaic module, and the next-level photovoltaic module is determined according to the first-level photovoltaic module;

[0021] The longitudinal water flow outlet of each photovoltaic module of the photovoltaic curtain wall array unit is connected to the longitudinal water inlet of the next photovoltaic module.

[0022] Preferably, the longitudinal waterway inlet of the first-stage photovoltaic assembly is also connected to a water storage device or a water outlet device for supplying water to the first-stage photovoltaic assembly and the upper surface of the first-stage photovoltaic assembly.

[0023] Preferably, the tempered glass further includes a first water storage unit and a second water storage unit;

[0024] The waterway inlet is connected to the waterway through the first water storage unit;

[0025] The water channel is connected to the water channel outlet through the second water storage unit;

[0026] The first water storage unit includes a first water storage area;

[0027] The second water storage unit includes a second water storage area;

[0028] The first water storage area of ​​the rooftop photovoltaic array unit is 4-6 times the second water storage area;

[0029] The first water storage area of ​​the photovoltaic curtain wall array unit is 1-2 times the second water storage area.

[0030] Preferably, the control system includes a first control system and a second control system;

[0031] The first control system is respectively connected to each photovoltaic array of the roof photovoltaic array unit and the photovoltaic curtain wall array unit, and is used to collect the first open circuit voltage and the first array temperature of each photovoltaic array, and control the water circulation system to supply water to the roof photovoltaic array unit and the photovoltaic curtain wall array unit respectively;

[0032] The second control system is respectively connected to each photovoltaic module of the roof photovoltaic array unit and the photovoltaic curtain wall array unit, and is used to collect the second open circuit voltage and the second array temperature of each photovoltaic module to provide reference information for the first control system.

[0033] Preferably, the first control system includes a first analysis module, the first analysis module is used to obtain a first instruction based on the first open circuit voltage, the first analysis module is used to obtain a second instruction based on the first array temperature, and the first analysis module is used to obtain a third instruction based on the first open circuit voltage and the first array temperature, wherein the first instruction is used to control the water circulation system to supply water to the roof photovoltaic array unit, the second instruction is used to control the water circulation system to supply water to the photovoltaic curtain wall array unit, and the third instruction is used to control the water circulation system to supply water to the roof photovoltaic array unit and the photovoltaic curtain wall array unit, respectively.

[0034] Preferably, the second control system includes a second analysis module, the second analysis module is used to obtain first reference information based on the second open circuit voltage, the second analysis module is used to obtain second reference information based on the second array temperature, and the second analysis module is used to obtain third reference data based on the second open circuit voltage and the second array temperature, wherein the first reference data is used for the first analysis module to obtain a first instruction based on the first reference data and the first open circuit voltage; the second reference data is used for the first analysis module to obtain a second instruction based on the second reference data and the first array temperature; and the third reference data is used for the first analysis module to obtain a third instruction based on the third reference data, the first open circuit voltage, and the first array temperature.

[0035] Preferably, the first analysis module includes a first threshold unit and a second threshold unit;

[0036] The first threshold unit is used to obtain an open circuit voltage threshold according to first historical data of the first open circuit voltage, wherein the first historical data is used to represent the first open circuit voltage when the roof photovoltaic array unit and the photovoltaic curtain wall array unit are working normally;

[0037] The second threshold unit is used to obtain an array temperature threshold according to the normal operating temperature of the self-cleaning photovoltaic array system, wherein the normal operating temperature is -40°C to 85°C, and the array temperature threshold is obtained by collecting the normal operating temperature and removing the first maximum value and the first minimum value of the normal operating temperature to obtain a first temperature set, taking the average value of the first temperature set to obtain a first threshold, taking the average value of the first maximum value and the first minimum value to obtain a second threshold, when the first threshold is less than or equal to the second threshold, the array temperature threshold is the first threshold, and when the first threshold is greater than the second threshold, the array temperature threshold is the second threshold.

[0038] Preferably, the first control system further comprises a third analysis module;

[0039] The third analysis module is used to obtain first judgment information according to the open circuit voltage threshold and the first reference information, wherein the first judgment information is used to indicate whether the open circuit voltage of each photovoltaic module is normal;

[0040] The third analysis module is used to obtain second judgment information according to the array temperature threshold and the second reference information, wherein the second judgment information is used to indicate whether the array temperature of each photovoltaic module is normal;

[0041] The first analysis module is connected to the third analysis module, and is used to collect the first judgment information and the second judgment information, and obtain the third instruction through the first reference information, the second reference information, the first open circuit voltage, and the first array temperature.

[0042] The positive and progressive effects of the present invention are:

[0043] The photovoltaic array system provided by the present invention realizes intelligent cleaning control of the photovoltaic array group, filling a gap in the industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 This is a schematic diagram of the self-cleaning photovoltaic array system described in the present invention. DETAILED DESCRIPTION

[0045] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present application.

[0046] like Figure 1 As shown, the present invention provides a self-cleaning photovoltaic array system, which includes a photovoltaic array system, a control system, and a water circulation system, wherein:

[0047] The photovoltaic array system is composed of several photovoltaic array groups, wherein each photovoltaic array group is arranged at a different part of the target building;

[0048] The control system is connected to the photovoltaic array system and the water circulation system respectively, and is used to control the water circulation system to supply water to each photovoltaic array by collecting the open circuit voltage and array temperature of each photovoltaic array group;

[0049] The water circulation system is used to supply water to the photovoltaic array system.

[0050] The photovoltaic array system at least includes a roof photovoltaic array unit and a photovoltaic curtain wall array unit; the roof photovoltaic array unit and the photovoltaic curtain wall array unit are respectively composed of a number of photovoltaic arrays, each photovoltaic array is composed of a number of photovoltaic modules, each photovoltaic module is composed of a number of photovoltaic components, wherein:

[0051] Each photovoltaic module includes:

[0052] Glass front: The glass front is ultra-clear tempered glass;

[0053] The rear end is a tempered glass, and the rear end also includes a waterway inlet, a waterway, and a waterway outlet arranged inside the tempered glass;

[0054] And, a photovoltaic unit group, the photovoltaic unit group is encapsulated between the glass front and rear ends.

[0055] The water channel inlet includes a longitudinal water channel inlet; the water channel outlet includes a transverse water channel outlet and a longitudinal water channel outlet; the water channel includes a transverse water channel and a longitudinal water channel; the transverse water channel outlet of the roof photovoltaic array unit is in a closed state; the transverse water channel outlet of the photovoltaic curtain wall array unit is in an open state; the longitudinal water flow outlet of each photovoltaic module of the photovoltaic curtain wall array unit is connected to the longitudinal water channel inlet; the longitudinal water flow outlet of each photovoltaic module of the roof photovoltaic array unit includes a first outlet and a second outlet, the first outlet is connected to the longitudinal water channel inlet, and the second outlet is used to supply water to the upper surface of the next-level photovoltaic module, wherein the next-level photovoltaic module is used to indicate that according to the trend of the target building, it is divided into several levels of photovoltaic modules from top to bottom, and the photovoltaic module at the top of the target building is taken as the first-level photovoltaic module, and the next-level photovoltaic module is determined based on the first-level photovoltaic module; the longitudinal water flow outlet of each photovoltaic module of the photovoltaic curtain wall array unit is connected to the longitudinal water inlet of the next-level photovoltaic module.

[0056] The longitudinal waterway inlet of the first-stage photovoltaic assembly is also connected to a water storage device or a water outlet device for supplying water to the first-stage photovoltaic assembly and the upper surface of the first-stage photovoltaic assembly.

[0057] The tempered glass also includes a first water storage unit and a second water storage unit; the waterway inlet is connected to the waterway through the first water storage unit; the waterway is connected to the waterway outlet through the second water storage unit; the first water storage unit includes a first water storage area; the second water storage unit includes a second water storage area; the first water storage area of ​​the rooftop photovoltaic array unit is 4-6 times the second water storage area; the first water storage area of ​​the photovoltaic curtain wall array unit is 1-2 times the second water storage area.

[0058] The control system includes a first control system and a second control system; the first control system is respectively connected to each photovoltaic array of the roof photovoltaic array unit and the photovoltaic curtain wall array unit, and is used to collect the first open-circuit voltage and the first array temperature of each photovoltaic array, and control the water circulation system to supply water to the roof photovoltaic array unit and the photovoltaic curtain wall array unit; the second control system is respectively connected to each photovoltaic module of the roof photovoltaic array unit and the photovoltaic curtain wall array unit, and is used to collect the second open-circuit voltage and the second array temperature of each photovoltaic module, and provide reference information for the first control system.

[0059] The first control system includes a first analysis module, the first analysis module is used to obtain a first instruction according to the first open circuit voltage, the first analysis module is used to obtain a second instruction according to the first array temperature, and the first analysis module is used to obtain a third instruction according to the first open circuit voltage and the first array temperature, wherein the first instruction is used to control the water circulation system to supply water to the roof photovoltaic array unit, the second instruction is used to control the water circulation system to supply water to the photovoltaic curtain wall array unit, and the third instruction is used to control the water circulation system to supply water to the roof photovoltaic array unit and the photovoltaic curtain wall array unit respectively.

[0060] The second control system includes a second analysis module, the second analysis module is used to obtain first reference information according to the second open circuit voltage, the second analysis module is used to obtain second reference information according to the second array temperature, and the second analysis module is used to obtain third reference data according to the second open circuit voltage and the second array temperature, wherein the first reference data is used for the first analysis module to obtain a first instruction according to the first reference data and the first open circuit voltage; the second reference data is used for the first analysis module to obtain a second instruction according to the second reference data and the first array temperature; and the third reference data is used for the first analysis module to obtain a third instruction according to the third reference data, the first open circuit voltage, and the first array temperature.

[0061] The first analysis module includes a first threshold unit and a second threshold unit; the first threshold unit is used to obtain an open circuit voltage threshold according to first historical data of the first open circuit voltage, wherein the first historical data is used to represent the first open circuit voltage of the roof photovoltaic array unit and the photovoltaic curtain wall array unit when they are working normally; the second threshold unit is used to obtain an array temperature threshold according to the normal working temperature of the self-cleaning photovoltaic array system, wherein the normal working temperature is -40°C to 85°C, and the array temperature threshold is obtained by collecting the normal working temperature and removing the first maximum value and the first minimum value of the normal working temperature to obtain a first temperature set, taking the average value of the first temperature set to obtain the first threshold, taking the average value of the first maximum value and the first minimum value to obtain the second threshold, when the first threshold is less than or equal to the second threshold, the array temperature threshold is the first threshold, and when the first threshold is greater than the second threshold, the array temperature threshold is the second threshold.

[0062] The first control system also includes a third analysis module; the third analysis module is used to obtain first judgment information based on an open circuit voltage threshold and first reference information, wherein the first judgment information is used to indicate whether the open circuit voltage of each photovoltaic module is normal; the third analysis module is used to obtain second judgment information based on an array temperature threshold and second reference information, wherein the second judgment information is used to indicate whether the array temperature of each photovoltaic module is normal; the first analysis module is connected to the third analysis module, and is used to collect the first judgment information and the second judgment information, and obtain a third instruction through the first reference information, the second reference information, the first open circuit voltage, and the first array temperature.

[0063] The water circulation system at least includes a water storage tank, a water pump, a water diversion pipeline, and a monitoring system. The monitoring system is used to collect the working index of the water circulation system. The water storage tank is used to store water. The water pump is used to provide water to the photovoltaic array system. The water diversion pipeline is used to introduce water into the water storage tank and evenly distribute the water to the outer surface of the photovoltaic array system.

[0064] The self-cleaning photovoltaic array system also includes a display module for displaying working data of the self-cleaning photovoltaic array system.

[0065] The self-cleaning photovoltaic array system also includes application systems used in different application ends. These systems can understand the working status of the system in real time by interacting with the self-cleaning photovoltaic array system. Among these systems, the system used in the cloud server can perform big data analysis, and then conduct a comprehensive analysis of the self-cleaning photovoltaic array system and the environment, geography and other information of the system application, and integrate the analysis results with the real-time data for judgment, providing a technical basis for the maintenance of the self-cleaning photovoltaic array system.

[0066] The self-cleaning photovoltaic array system provided by the present invention collects system data of the photovoltaic array system through a control system, and makes judgments based on historical data to achieve intelligent control of the operation of the cleaning photovoltaic array system. Furthermore, by judging the open-circuit voltage or array temperature alone, different units in the photovoltaic array system can be cleaned individually, and the entire photovoltaic array can be cleaned periodically or as a whole according to characteristic conditions through comprehensive analysis. This not only meets the special requirements of users, but also meets the objective needs of the geographical environment and climatic environment of different regions for photovoltaic products, provides a broader space for the application of photovoltaic products, and provides technical support for the digital upgrade of photovoltaic products.

[0067] It should be noted that similar numbers and letters represent similar items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description and are not to be understood as indicating or implying relative importance.

[0068] Finally, it should be noted that the above-described embodiments are only specific implementations of the present invention, which are used to illustrate the technical solutions of the present invention, rather than to limit them. The protection scope of the present invention is not limited thereto. Although the present invention is described in detail with reference to the above-described embodiments, those skilled in the art should understand that any person skilled in the art can still modify the technical solutions described in the above-described embodiments within the technical scope disclosed by the present invention, or can easily think of changes, or perform equivalent replacements on some of the technical features thereof; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention. They should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A self-cleaning photovoltaic array system, characterized in that: The self-cleaning photovoltaic array system includes a photovoltaic array system, a control system, and a water circulation system, wherein: The photovoltaic array system is composed of a plurality of photovoltaic array groups, wherein each photovoltaic array group is arranged at a different part of the target building; The control system is connected to the photovoltaic array system and the water circulation system respectively, and is used to control the water circulation system to supply water to each photovoltaic array by collecting the open circuit voltage and array temperature of each photovoltaic array group; The control system includes a first control system and a second control system; The first control system is connected to each group of the photovoltaic arrays of the roof photovoltaic array unit and the photovoltaic curtain wall array unit respectively, and is used to collect the first open circuit voltage and the first array temperature of each group of the photovoltaic array, and control the water circulation system to supply water to the roof photovoltaic array unit and the photovoltaic curtain wall array unit respectively; The second control system is respectively connected to each photovoltaic module of the roof photovoltaic array unit and the photovoltaic curtain wall array unit, and is used to collect the second open circuit voltage and the second array temperature of each photovoltaic module to provide reference information for the first control system; The first control system includes a first analysis module, the first analysis module is used to obtain a first instruction according to the first open circuit voltage, the first analysis module is used to obtain a second instruction according to the first array temperature, and the first analysis module is used to obtain a third instruction according to the first open circuit voltage and the first array temperature, wherein the first instruction is used to control the water circulation system to supply water to the roof photovoltaic array unit, the second instruction is used to control the water circulation system to supply water to the photovoltaic curtain wall array unit, and the third instruction is used to control the water circulation system to supply water to the roof photovoltaic array unit and the photovoltaic curtain wall array unit respectively; The first analysis module includes a first threshold unit and a second threshold unit; The first threshold unit is used to obtain an open circuit voltage threshold according to first historical data of the first open circuit voltage, wherein the first historical data is used to represent the first open circuit voltage when the roof photovoltaic array unit and the photovoltaic curtain wall array unit are working normally; The second threshold unit is used to obtain the array temperature threshold according to the normal operating temperature of the self-cleaning photovoltaic array system, wherein the normal operating temperature is -40°C to 85°C, and the array temperature threshold is obtained by collecting the normal operating temperature and removing the first maximum value and the first minimum value of the normal operating temperature to obtain a first temperature set, taking the average value of the first temperature set to obtain a first threshold, taking the average value of the first maximum value and the first minimum value to obtain a second threshold, when the first threshold is less than or equal to the second threshold, the array temperature threshold is the first threshold, and when the first threshold is greater than the second threshold, the array temperature threshold is the second threshold; The second control system includes a second analysis module, the second analysis module is used to obtain first reference information according to the second open circuit voltage, the second analysis module is used to obtain second reference information according to the second array temperature, and the second analysis module is used to obtain third reference information according to the second open circuit voltage and the second array temperature, wherein the first reference information is used by the first analysis module to obtain the first instruction according to the first reference information and the first open circuit voltage; the second reference information is used by the first analysis module to obtain the second instruction according to the second reference information and the first array temperature; the third reference information is used by the first analysis module to obtain the third instruction according to the third reference information, the first open circuit voltage, and the first array temperature; The water circulation system is used to supply water to the photovoltaic array system.

2. A self-cleaning photovoltaic array system as claimed in claim 1, characterized in that: The photovoltaic array system at least includes a roof photovoltaic array unit and a photovoltaic curtain wall array unit; The roof photovoltaic array unit and the photovoltaic curtain wall array unit are respectively composed of several groups of photovoltaic arrays, each group of photovoltaic arrays is composed of several photovoltaic modules, and each photovoltaic module is composed of several photovoltaic components, wherein: Each photovoltaic module includes: A glass front end, wherein the glass front end is ultra-white tempered glass; A rear end, the rear end is a tempered glass, and the rear end also includes a waterway inlet, a waterway, and a waterway outlet arranged inside the tempered glass; And, a photovoltaic unit group, wherein the photovoltaic unit group is encapsulated between the glass front end and the rear end.

3. A self-cleaning photovoltaic array system as claimed in claim 2, characterized in that: The waterway inlet includes a longitudinal waterway inlet; The waterway outlet includes a transverse waterway outlet and a longitudinal waterway outlet; The waterway includes a transverse waterway and a longitudinal waterway; The lateral waterway outlet of the roof photovoltaic array unit is in a closed state; The transverse waterway outlet of the photovoltaic curtain wall array unit is in an open state; The longitudinal waterway outlet of each photovoltaic module of the photovoltaic curtain wall array unit is connected to the longitudinal waterway inlet; The longitudinal waterway outlet of each photovoltaic module of the roof photovoltaic array unit includes a first outlet and a second outlet, wherein the first outlet is connected to the longitudinal waterway inlet, and the second outlet is used to supply water to the upper surface of the next-level photovoltaic module, wherein the next-level photovoltaic module is used to indicate that the photovoltaic modules are divided into several levels from top to bottom according to the trend of the target building, and the photovoltaic module at the top of the target building is taken as the first-level photovoltaic module, and the next-level photovoltaic module is determined according to the first-level photovoltaic module; The longitudinal waterway outlet of each photovoltaic assembly of the photovoltaic curtain wall array unit is connected to the longitudinal waterway inlet of the next-stage photovoltaic assembly.

4. A self-cleaning photovoltaic array system as claimed in claim 3, characterized in that: The longitudinal waterway inlet of the first-stage photovoltaic assembly is also connected to a water storage device or a water outlet device for supplying water to the first-stage photovoltaic assembly and the upper surface of the first-stage photovoltaic assembly.

5. A self-cleaning photovoltaic array system as claimed in claim 4, characterized in that: The tempered glass also includes a first water storage unit and a second water storage unit; The waterway inlet is connected to the waterway through the first water storage unit; The waterway is connected to the waterway outlet through the second water storage unit; The first water storage unit includes a first water storage area; The second water storage unit includes a second water storage area; The first water storage area of ​​the rooftop photovoltaic array unit is 4-6 times the second water storage area; The first water storage area of ​​the photovoltaic curtain wall array unit is 1-2 times the second water storage area.

6. A self-cleaning photovoltaic array system as claimed in claim 1, characterized in that: The first control system further includes a third analysis module; The third analysis module is used to obtain first judgment information according to the open circuit voltage threshold and the first reference information, wherein the first judgment information is used to indicate whether the open circuit voltage of each photovoltaic module is normal; The third analysis module is used to obtain second judgment information according to the array temperature threshold and the second reference information, wherein the second judgment information is used to indicate whether the array temperature of each photovoltaic module is normal; The first analysis module is connected to the third analysis module, and is used to collect the first judgment information and the second judgment information, and obtain the third instruction through the first reference information, the second reference information, the first open circuit voltage, and the first array temperature.

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