Operation and maintenance platform and method based on photovoltaic modules

Abstract

The embodiment of the present application provides an operation and maintenance platform and operation and maintenance method based on photovoltaic components, the platform includes: photovoltaic components, inverters, and control terminals, multiple photovoltaic components are connected to form a photovoltaic string, multiple photovoltaic strings are connected to the inverter, the inverter is connected to the control terminal, and the photovoltaic components are connected to the control terminal. By detecting the data at the photovoltaic component level to locate the fault problem, the fault detection of the photovoltaic power station is more refined, the positioning problem is more accurate, and the operation and maintenance efficiency is improved.

Description

Technical Field

[0001] The present application relates to the field of photovoltaic technology, and in particular to an operation and maintenance platform and an operation and maintenance method based on photovoltaic components. Background Art

[0002] At present, with the development of new energy, photovoltaic power generation has gradually received attention. Photovoltaic power stations will have various faults during long-term operation. It is necessary to discover these problems and maintain the photovoltaic power station according to the specific faults.

[0003] Currently, the main task is to detect the data of photovoltaic strings in photovoltaic power stations and identify fault problems for maintenance.

[0004] However, the above solution determines the fault problem based on the string data, and can only locate the fault problem at the string level, but cannot further refine the fault problem, resulting in low accuracy of fault location and low maintenance efficiency. Summary of the invention

[0005] In view of the above problems, embodiments of the present application are proposed to provide an operation and maintenance platform and an operation and maintenance method involving a photovoltaic component that overcome the above problems or at least partially solve the above problems.

[0006] In a first aspect, an embodiment of the present application discloses an operation and maintenance platform based on a photovoltaic module, including a photovoltaic module, an inverter, and a control terminal, wherein a plurality of the photovoltaic modules are connected to form a photovoltaic string, a plurality of the photovoltaic strings are connected to the inverter, the inverter is connected to the control terminal, and the photovoltaic module is connected to the control terminal;

[0007] The photovoltaic module is used to collect voltage data, current data and module position information of the photovoltaic module;

[0008] The inverter is used to collect the input power of the inverter, the input power of the photovoltaic string and the inverter position information;

[0009] The control terminal is used to obtain operation and maintenance data from the photovoltaic component and the inverter, and generate operation and maintenance messages based on the operation and maintenance data; the operation and maintenance data includes voltage data, current data and component location information of the photovoltaic component, input power of the inverter, input power of the photovoltaic string and inverter location information.

[0010] Optionally, in an exemplary embodiment of the present disclosure, the operation and maintenance platform further includes a data storage server, the control terminal is connected to the data storage server, and the data storage server is used to store the operation and maintenance data uploaded by the control terminal.

[0011] Optionally, in an exemplary embodiment of the present disclosure, the operation and maintenance platform further includes another control terminal, which is connected to the data storage server, and the other control terminal is used to obtain operation and maintenance data from the data storage server.

[0012] In a second aspect, an embodiment of the present application provides an operation and maintenance method based on a photovoltaic module applied to any of the above-mentioned operation and maintenance platforms, the method comprising:

[0013] The control terminal obtains efficiency parameters and solar irradiation data of the photovoltaic power station and calculates the theoretical power generation of the photovoltaic power station;

[0014] The control terminal calculates the actual power generation of the photovoltaic power station according to the operation and maintenance data of the photovoltaic power station;

[0015] The control terminal determines the target photovoltaic component according to the operation and maintenance data when the actual power generation is lower than the theoretical power generation;

[0016] An operation and maintenance message for the target photovoltaic component is generated, where the operation and maintenance message is used to instruct maintenance of the target photovoltaic component.

[0017] Optionally, in an exemplary embodiment of the present disclosure, the step of determining a target photovoltaic component according to the operation and maintenance data includes:

[0018] The control terminal obtains voltage data and current data of all photovoltaic modules and calculates power data of the photovoltaic modules;

[0019] The power data of all the photovoltaic modules are sorted, and the photovoltaic modules whose power data do not meet the preset threshold condition are determined as target photovoltaic modules.

[0020] Optionally, in an exemplary embodiment of the present disclosure, the step of generating an operation and maintenance message for the target photovoltaic component includes:

[0021] When the power data of the target photovoltaic component is zero, an operation and maintenance message for the target photovoltaic component is generated; the content of the operation and maintenance message includes: replacement of the faulty component or repair of the circuit and component location information;

[0022] When the power data of the target photovoltaic component is not zero, an operation and maintenance message for the target photovoltaic component is generated; the content of the operation and maintenance message includes: replacement of a faulty component and component location information.

[0023] Optionally, in an exemplary embodiment of the present disclosure, after the step in which the actual power generation is lower than the theoretical power generation, the method further comprises:

[0024] Determine a target inverter according to the operation and maintenance data, and generate an operation and maintenance message for the target inverter; and / or

[0025] A target photovoltaic string is determined according to the operation and maintenance data, and an operation and maintenance message for the target photovoltaic string is generated.

[0026] Optionally, in an exemplary embodiment of the present disclosure, the step of determining a target inverter according to the operation and maintenance data and generating an operation and maintenance message for the target inverter includes:

[0027] When the input power of the inverter is zero, determining the inverter as a target inverter;

[0028] Generate an operation and maintenance message for the target inverter; the content of the operation and maintenance message includes: checking inverter fault and inverter location information.

[0029] Optionally, in an exemplary embodiment of the present disclosure, the step of determining a target photovoltaic string according to the operation and maintenance data and generating an operation and maintenance message for the target photovoltaic string includes:

[0030] When the input power of the photovoltaic string is zero, determining the photovoltaic string as a target photovoltaic string;

[0031] Generate an operation and maintenance message for the target photovoltaic string; the content of the operation and maintenance message includes: repairing the line of the photovoltaic string and the inverter location information.

[0032] Optionally, in an exemplary embodiment of the present disclosure, the method further includes:

[0033] A shutdown instruction for the target photovoltaic component is generated; the shutdown instruction is used to instruct the photovoltaic component to execute an action of shutting down output.

[0034] The embodiments of the present invention include the following advantages:

[0035] A photovoltaic string is formed by connecting multiple photovoltaic modules. Multiple photovoltaic strings are connected to the inverter, the inverter is connected to the control terminal, and the photovoltaic modules are connected to the control terminal. The photovoltaic modules collect the voltage data, current data and module location information of the photovoltaic modules, and the inverter collects the input power of the inverter, the input power of the photovoltaic strings and the location information of the inverter. The control terminal can obtain this information, detect faults at the photovoltaic module level, and then generate operation and maintenance messages to instruct personnel to perform maintenance, making the fault detection of the photovoltaic power station more refined and the positioning of problems more accurate, thereby improving the operation and maintenance efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 is a schematic diagram of the structure of an operation and maintenance platform based on photovoltaic modules provided in an embodiment of the present invention;

[0037] Figure 2 is a schematic structural diagram of a photovoltaic assembly provided by an embodiment of the present invention;

[0038] Figure 3 is a schematic structural diagram of another photovoltaic module-based operation and maintenance platform provided by an embodiment of the present invention;

[0039] Figure 4 It is a flowchart of the steps of the operation and maintenance method based on photovoltaic components provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0040] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0041] Figure 1 FIG. 1 is a schematic diagram of an operation and maintenance platform based on photovoltaic modules provided by an embodiment of the present invention. Figure 1 As shown, the connection relationship between the components of the photovoltaic module-based operation and maintenance platform is schematically shown. The photovoltaic module-based operation and maintenance platform includes a photovoltaic module 101, a photovoltaic string 102, an inverter 103 and a control terminal 104. Figure 1 As shown, a plurality of photovoltaic modules 101 are connected to form a photovoltaic string 102 . Figure 1 In the figure, four photovoltaic modules 101 are connected to form a photovoltaic string 102, and a total of 16 photovoltaic modules 101 are connected to form 4 photovoltaic strings 102. It can be understood that the number of photovoltaic modules 101 can be adjusted, and different numbers of photovoltaic modules 101 can be connected to form a photovoltaic string 102, and the number of photovoltaic strings 102 can also be adjusted. The inverter 103 is connected to the string 102, and the inverter 103 can be connected to any number of strings 102, for example, the inverter 103 is connected to two strings 102 or to five strings 102. The inverter 103 is connected to the control terminal 104, and any number of inverters 103 can be connected to the control terminal 104. Each photovoltaic module 101 is connected to the control terminal 104.

[0042] A photovoltaic module is a power generation device that generates direct current after being exposed to sunlight, and is composed of a thin solid photovoltaic cell made of a semiconductor material (such as silicon). The photovoltaic module of the present application may be a photovoltaic module with a detection function. The voltage data, current data and module position information of each photovoltaic module may be detected to obtain this information. The photovoltaic module may be provided with a detection device, a voltage detection circuit and a current detection circuit in the module, and the detection device may be connected to the signal transmission port of the voltage detection circuit and the signal transmission port of the current detection circuit, respectively, to obtain the voltage data and current data of the photovoltaic module. The photovoltaic module may be provided with a position sensor in the module, and the position sensor may be a device equipped with a positioning system, and the position information corresponding to the photovoltaic module may be obtained through the position sensor.

[0043] Photovoltaic strings, in photovoltaic power generation systems, are formed by connecting several photovoltaic modules in series to form a circuit unit with a certain DC output. Figure 2 As shown, the photovoltaic module 101 includes a communication port 1011, a positive power port 1012 and a negative power port 1013. The negative power port 1013 of the photovoltaic module 101 is connected to the positive power port 1014 of the next photovoltaic module to form a photovoltaic string.

[0044] An inverter is a device that converts direct current into alternating current. It consists of an inverter bridge, control logic, and a filter circuit, and is used to convert direct current (such as batteries, storage bottles) into alternating current. Inverters can include string inverters and centralized inverters. For string inverters, the components are directly input into the string inverter after being stringed together, and then the components are converted into alternating current and then the components are converged and boosted. String inverters generally have low power. String inverters can detect the voltage and current of each string to which they are connected. For centralized inverters, the components are first converged into direct current after being stringed together, and then added to the inverter. After being converted into alternating current, the components are directly boosted. Generally, the power is large, but centralized inverters cannot detect the voltage and current of each string. The inverter of the present application may be a string inverter, or an inverter in which a component voltage, current detection unit and position sensor are added to a centralized inverter, so that the inverter has the function of collecting the input power of the inverter, the input power of the photovoltaic strings connected to the inverter and the inverter position information. The strings may also be connected to a device with a current and voltage detection unit and then connected to a centralized inverter.

[0045] The control terminal can obtain operation and maintenance data from PV modules and inverters. The operation and maintenance data includes voltage data, current data and module location information of PV modules, input power of inverters, input power of PV strings and inverter location information, and generate operation and maintenance messages based on this information.

[0046] Optional, such as Figure 3 As shown, the operation and maintenance platform also includes a data storage server 105, and the control terminal 104 is connected to the data storage server 105, and the data storage server is used to store the operation and maintenance data uploaded by the control terminal.

[0047] In the disclosed embodiment, the control terminal will upload the operation and maintenance data obtained from the photovoltaic components and the inverter to the data storage server to save a large amount of operation and maintenance data and improve the security of the operation and maintenance data storage. The control terminal can upload the operation and maintenance data at a certain frequency. For example, the operation and maintenance data of the day can be uploaded once a day, or once every two days, or once a week. The disclosed embodiment does not limit this.

[0048] Optional, continue to refer to Figure 3 As shown, the operation and maintenance platform may further include a box transformer 107 , a booster station 108 and a data switch node 109 .

[0049] The photovoltaic string 102 is connected to the input end of the inverter 103, the output end of the inverter 103 is connected to the input end of the box-type transformer 107, the output end of the box-type transformer 107 can be connected to the input end of the booster station 108 after parallel connection through a collector cable, and the output end of the booster station 108 is connected to the power grid to achieve grid connection. The booster station 108 is communicatively connected to the control terminal 104, the control terminal 104 is connected to the data storage server 105, and the data storage server 105 is connected to another control terminal 106.

[0050] The inverter 103 may be connected to the control terminal 104 through the above connection sequence, or directly connected to the control terminal 104 through a separate communication line. The photovoltaic module 101 may be connected to the data switch node 109, connected to the control terminal 104 through the booster station 108, or directly connected to the control terminal 104 through a separate communication line. The above wired communication connection mode may also be replaced by a wireless communication mode connection, and the embodiments of the present disclosure do not limit how the various parts communicate with each other.

[0051] Another object of the present invention is to provide an operation and maintenance method based on photovoltaic modules, such as Figure 4 As shown, the operation and maintenance method based on photovoltaic modules includes the following steps:

[0052] Step 10: The control terminal obtains efficiency parameters and solar irradiation data of the photovoltaic power station, and calculates the theoretical power generation of the photovoltaic power station.

[0053] In the embodiment of the present disclosure, the theoretical power generation of the photovoltaic power station can be calculated by the following formula:

[0054] Ep=HA×S×K2

[0055] HA is the total solar radiation on the inclined surface, expressed in kilowatt-hours per square meter (kW·h / m 2 ), S is the total area of ​​the photovoltaic modules, and K2 is the efficiency parameter of the photovoltaic power station. It is understandable that the conversion efficiency of the photovoltaic modules can be further considered and added to the formula for calculation. The embodiment of the present disclosure does not specifically limit how to calculate the theoretical power generation of the photovoltaic power station.

[0056] Among them, solar radiation data can be directly obtained from the Meteorological Bureau or other data sources. For example, the average annual sunshine hours for a certain place can be obtained from the Meteorological Bureau, which is 2778.7 hours, and the average annual total radiation is 1400.6kW·h / m 2 , and you can also get specific solar radiation data for a certain period of time. The efficiency parameter of a photovoltaic power station is a parameter based on the design of the photovoltaic power station, which represents the efficiency of converting solar radiation energy.

[0057] Step 20: The control terminal calculates the actual power generation of the photovoltaic power station according to the operation and maintenance data of the photovoltaic power station.

[0058] The control terminal calculates the actual power generation of the photovoltaic power station within a certain period of time based on the voltage data and current data of the photovoltaic components, the input power of the inverter, and the input power of the photovoltaic strings, which are data obtained through real-time detection. For example, the actual power generation of the total photovoltaic power station can be obtained by calculating the power generation of each photovoltaic component; the actual power generation of the total photovoltaic power station can also be obtained by calculating the power generation of each photovoltaic string through the input power of each photovoltaic string; or the actual power generation of the total photovoltaic power station can be calculated based on the input power of multiple inverters. How to calculate the actual power generation of the photovoltaic power station based on the operation and maintenance data is not specifically limited here.

[0059] Step 30: When the actual power generation is lower than the theoretical power generation, the control terminal determines a target photovoltaic component according to the operation and maintenance data.

[0060] The control terminal compares the actual power generation with the theoretical power generation. If the actual power generation is lower than the theoretical power generation, there may be a fault problem at a specific location in the power generation system. The target photovoltaic module is determined based on operation and maintenance data such as the voltage data and current data of the photovoltaic module. For example, the general power that a photovoltaic module should reach can be determined first. If the current power of the photovoltaic module is calculated to be less than the general power based on the voltage data and current data of the photovoltaic module, the photovoltaic module is a faulty photovoltaic module and is determined as the target photovoltaic module.

[0061] Step 40: Generate an operation and maintenance message for the target photovoltaic assembly, wherein the operation and maintenance message is used to instruct maintenance of the target photovoltaic assembly.

[0062] For the operation and maintenance message of the target photovoltaic module, the content of the operation and maintenance message can be the current power information of the target photovoltaic module and the location information of the target photovoltaic module obtained above, so as to show the specific information of the faulty target photovoltaic module to the operation and maintenance personnel. The control terminal can send the generated operation and maintenance information to the mobile terminal of the operation and maintenance personnel to instruct the operation and maintenance personnel to repair the target photovoltaic module.

[0063] In the implementation of the embodiments of the present disclosure, the photovoltaic components collect the voltage data, current data and component location information of the photovoltaic components, and the inverter collects the input power of the inverter, the input power of the photovoltaic string and the inverter location information. The control terminal can first determine whether the power generation system itself meets the requirements to confirm whether a fault has occurred, and then obtain this information, detect the fault problem at the photovoltaic component level, and then generate an operation and maintenance message to instruct personnel to perform maintenance, so that the fault detection of the photovoltaic power station is more refined, the positioning problem is more accurate, and the operation and maintenance efficiency is improved.

[0064] Optionally, step 20 of determining a target photovoltaic component according to the operation and maintenance data includes:

[0065] Step 201, the control terminal obtains voltage data and current data of all photovoltaic modules, and calculates power data of the photovoltaic modules;

[0066] Step 202: sort the power data of all the photovoltaic modules, and determine the photovoltaic modules whose power data do not meet the preset threshold condition as target photovoltaic modules.

[0067] In the disclosed embodiment, the control terminal obtains the voltage data and current data of all photovoltaic modules, calculates the power data of all photovoltaic modules, sorts the power data of all photovoltaic modules, and determines the photovoltaic modules whose power data do not meet the preset threshold conditions as target photovoltaic modules.

[0068] Among them, the preset threshold condition can be that after sorting the power data, the power data ranked later in the sequence are selected, for example, the last 5 power data in the ranking, and the preset threshold is 5. The preset threshold condition is that the ranking order in the sequence is not the last 5, that is, each time multiple photovoltaic components are sorted, only a fixed number of target photovoltaic components are selected, that is, each time only a specific number of target photovoltaic components suspected of faults are determined based on the sorting, instead of screening all photovoltaic components that do not meet the preset threshold value when it is a standard value, for example, screening is performed by comparison based on a standard power value.

[0069] The embodiments of the present disclosure are implemented by sorting the power data and directly selecting a fixed number of target photovoltaic modules corresponding to the preset threshold value based on the preset threshold value condition. On the one hand, it avoids the problem of excessive operation and maintenance pressure caused by taking a large number of photovoltaic modules as target photovoltaic modules at one time; on the other hand, the photovoltaic modules with the most serious faults and the lowest power can be prioritized as target photovoltaic modules for maintenance. After maintaining these modules, the power generation efficiency of the photovoltaic power station can be improved to a greater extent, and the power improvement efficiency can be greater.

[0070] It is understandable that after determining a fixed number of target photovoltaic components in the above manner and generating corresponding operation and maintenance messages to indicate maintenance of these target photovoltaic components, it is natural to detect whether the photovoltaic power station is operating normally again, that is, it is possible to continue to repeat steps 10, 201, 202, 30 and 40, and continue to detect the theoretical power generation and the actual power generation. If the actual power generation is lower than the theoretical data, then determine the photovoltaic components with the lower ranking to perform operation and maintenance. Through the method of steps 10, 201, 202, 30 and 40, it is possible to only use the actual power generation to reach the theoretical power generation as the standard, so that each time through the maintenance of a fixed number of target photovoltaic components, to approach the final achievement of this power generation standard, without the need to maintain all components at once when there are many faulty components, so as to avoid causing excessive operation and maintenance pressure.

[0071] Optionally, step 40 of generating an operation and maintenance message for the target photovoltaic component includes:

[0072] Step 401, when the power data of the target photovoltaic component is zero, generating an operation and maintenance message for the target photovoltaic component; the content of the operation and maintenance message includes: replacement of the faulty component or repair of the circuit, component location information;

[0073] Step 402: When the power data of the target photovoltaic component is not zero, an operation and maintenance message for the target photovoltaic component is generated; the content of the operation and maintenance message includes: replacement of the faulty component and component location information.

[0074] In the disclosed embodiment, when the power data of the target photovoltaic module is zero, the content of the operation and maintenance message generated for the target photovoltaic module includes: replacing the faulty module or repairing the line, and the module location information. When the power data of the target photovoltaic module is zero, it may be a problem with the photovoltaic module itself, and there is also a high possibility that there is a line problem, so the operation and maintenance message may include replacing the faulty component or repairing the line. And provide the operation and maintenance personnel with the exact location by including the component location information. For example, a mapping relationship can be established between different values ​​of the power data of the target photovoltaic module and different operation and maintenance message contents. After obtaining the corresponding power value, the corresponding operation and maintenance message is determined according to the mapping relationship between different values ​​and different operation and maintenance message contents.

[0075] When the power data of the target PV module is not zero, the content of the operation and maintenance message generated for the target PV module includes: replacement of the faulty module and module location information. Since the target PV module is ranked last among the power data of all PV modules, when the power data of the target PV module is not zero, it means that the power of the target PV module is low. At this time, the content of the operation and maintenance message generated should be to replace the faulty module.

[0076] By implementing the embodiments of the present disclosure, by determining whether the power data of the target photovoltaic component is zero and generating different operation and maintenance messages, the operation and maintenance personnel can be given intuitive suggestions on how to maintain the target photovoltaic component and the component location, thereby improving the efficiency and accuracy of maintaining the photovoltaic system.

[0077] Optionally, after the step of controlling the terminal in the case where the actual power generation is lower than the theoretical power generation, the method further comprises:

[0078] Determine a target inverter according to the operation and maintenance data, and generate an operation and maintenance message for the target inverter; and / or

[0079] The target PV strings are determined according to the operation and maintenance data, and operation and maintenance messages for the target PV strings are generated.

[0080] In the disclosed embodiment, the control terminal can obtain the input power of the inverter, the input power of the photovoltaic string and the inverter location information. When the input power of the inverter is detected to be zero, the corresponding operation and maintenance message generated includes: checking the inverter fault and the inverter location information. Or when the input power of a string in the inverter is detected to be zero, the corresponding operation and maintenance message generated includes: inspecting the line of the photovoltaic string and the inverter location information. Since the string is connected to the inverter, the position of the string connected to it can be determined by the position of the inverter.

[0081] By implementing the embodiments of the present disclosure, a target inverter or a target photovoltaic string is determined according to the operation and maintenance data, and a corresponding operation and maintenance message is generated, so that fault troubleshooting can be performed from the inverter part and the string part, thereby improving the comprehensiveness of photovoltaic system fault troubleshooting.

[0082] Optionally, the method further includes:

[0083] A shutdown instruction for the target photovoltaic component is generated; the shutdown instruction is used to instruct the photovoltaic component to execute an action of shutting down output.

[0084] In the embodiment of the present disclosure, a photovoltaic module may have a shut-off device inside, and when a faulty target photovoltaic module is detected, a shut-off instruction is sent to the target photovoltaic module, and the target photovoltaic module responds to the shut-off instruction and shuts down the input of the module. For example, the connection between the target photovoltaic module and other photovoltaic modules that are working normally may be cut off.

[0085] By implementing the embodiments of the present disclosure, a shutdown instruction is generated for a target photovoltaic component, so that the target photovoltaic component cuts off the connection between the target photovoltaic component and other photovoltaic components that are working normally in response to the shutdown instruction. This eliminates the DC high voltage in the photovoltaic system array, reduces the risk of electric shock, and improves the safety of photovoltaic power station operation and maintenance.

[0086] It is understandable that the control terminal obtains the operation and maintenance data and uploads the operation and maintenance data to the data storage server, and another control terminal can obtain the operation and maintenance data of the current control terminal from the data storage server. Then, the above method can also be implemented by another terminal based on the operation and maintenance data to detect faults and generate operation and maintenance messages, etc., or another terminal can implement part of it or process part of the data, which is not limited by the present disclosure.

[0087] Another object of the present invention is to provide a storage medium on which a plurality of instructions are stored, wherein the instructions are suitable for being loaded by a processor and executing the above-mentioned photovoltaic component-based operation and maintenance method.

[0088] Another object of the present invention is to provide an electronic device, comprising:

[0089] a processor adapted to implement the instructions; and

[0090] A storage medium is suitable for storing a plurality of instructions, wherein the instructions are suitable for being loaded by a processor and executed by the photovoltaic component-based operation and maintenance method as described above.

[0091] The storage medium, electronic device and the above-mentioned photovoltaic module-based operation and maintenance method and device have the same advantages over the prior art, which will not be repeated here.

[0092] The processor is a processor in the electronic device described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a computer read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0093] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0094] It will be appreciated by those skilled in the art that the embodiments of the present invention may be provided as methods, devices, or computer program products. Therefore, the embodiments of the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the embodiments of the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.

[0095] In a typical configuration, the computer device includes one or more processors (CPU), input / output interfaces, network interfaces and memory. Memory may include non-permanent memory in computer-readable media, random access memory (RAM) and / or non-volatile memory in the form of read-only memory (ROM) or flash RAM. Memory is an example of a computer-readable medium. Computer-readable media include permanent and non-permanent, removable and non-removable media that can be implemented by any method or technology to store information. Information can be computer-readable instructions, data structures, modules of programs or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device. According to the definition in this article, computer-readable media does not include non-transitory media such as modulated data signals and carrier waves.

[0096] The embodiments of the present invention are described with reference to the flowcharts and / or block diagrams of the methods, terminal devices (systems), and computer program products according to the embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of the processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing terminal device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing terminal device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0097] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing terminal device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce a manufactured product including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0098] These computer program instructions can also be loaded onto a computer or other programmable data processing terminal device so that a series of operating steps are executed on the computer or other programmable terminal device to produce a computer-implemented process, thereby providing instructions for executing on the computer or other programmable terminal device to implement the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0099] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the embodiments of the present invention.

[0100] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or terminal device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or terminal device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or terminal device including the elements.

[0101] The above is a detailed introduction to an operation and maintenance method and device based on photovoltaic modules provided by the present invention. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea; at the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. An operation and maintenance platform based on photovoltaic modules, characterized in that: It includes a photovoltaic module, an inverter, and a control terminal. A plurality of the photovoltaic modules are connected to form a photovoltaic string. The plurality of photovoltaic strings are connected to the inverter. The inverter is connected to the control terminal. The photovoltaic module is connected to the control terminal. The photovoltaic module is used to collect voltage data, current data and module position information of the photovoltaic module; The inverter is used to collect the input power of the inverter, the input power of the photovoltaic string and the inverter position information; The control terminal is used to obtain operation and maintenance data from the photovoltaic component and the inverter, and generate operation and maintenance messages based on the operation and maintenance data; the operation and maintenance data includes voltage data, current data and component location information of the photovoltaic component, input power of the inverter, input power of the photovoltaic string and inverter location information.

2. The platform according to claim 1, characterized in that The operation and maintenance platform also includes a data storage server, the control terminal is connected to the data storage server, and the data storage server is used to store the operation and maintenance data uploaded by the control terminal.

3. The platform according to claim 2, characterized in that: The operation and maintenance platform also includes another control terminal, which is connected to the data storage server and is used to obtain operation and maintenance data from the data storage server.

4. An operation and maintenance method based on photovoltaic modules, characterized in that: The method is applied to the operation and maintenance platform according to any one of claims 1 to 3, and the method comprises: The control terminal obtains efficiency parameters and solar irradiation data of the photovoltaic power station and calculates the theoretical power generation of the photovoltaic power station; The control terminal calculates the actual power generation of the photovoltaic power station according to the operation and maintenance data of the photovoltaic power station; The control terminal determines the target photovoltaic component according to the operation and maintenance data when the actual power generation is lower than the theoretical power generation; An operation and maintenance message for the target photovoltaic component is generated, where the operation and maintenance message is used to instruct maintenance of the target photovoltaic component.

5. The method according to claim 4, characterized in that The step of determining the target photovoltaic component according to the operation and maintenance data comprises: The control terminal obtains voltage data and current data of all photovoltaic modules and calculates power data of the photovoltaic modules; The power data of all the photovoltaic modules are sorted, and the photovoltaic modules whose power data do not meet the preset threshold condition are determined as target photovoltaic modules.

6. The method according to claim 5, characterized in that The step of generating an operation and maintenance message for the target photovoltaic component includes: When the power data of the target photovoltaic component is zero, an operation and maintenance message for the target photovoltaic component is generated; the content of the operation and maintenance message includes: replacement of the faulty component or repair of the circuit and component location information; When the power data of the target photovoltaic component is not zero, an operation and maintenance message for the target photovoltaic component is generated; the content of the operation and maintenance message includes: replacement of a faulty component and component location information.

7. The method according to claim 4, characterized in that After the step of controlling the terminal in the case where the actual power generation is lower than the theoretical power generation, the method further comprises: Determine a target inverter according to the operation and maintenance data, and generate an operation and maintenance message for the target inverter; and / or A target photovoltaic string is determined according to the operation and maintenance data, and an operation and maintenance message for the target photovoltaic string is generated.

8. The method according to claim 7, characterized in that The step of determining a target inverter according to the operation and maintenance data and generating an operation and maintenance message for the target inverter comprises: When the input power of the inverter is zero, determining the inverter as a target inverter; Generate an operation and maintenance message for the target inverter; the content of the operation and maintenance message includes: checking inverter fault and inverter location information.

9. The method according to claim 7, characterized in that: The step of determining a target photovoltaic string according to the operation and maintenance data and generating an operation and maintenance message for the target photovoltaic string includes: When the input power of the photovoltaic string is zero, determining the photovoltaic string as a target photovoltaic string; Generate an operation and maintenance message for the target photovoltaic string; the content of the operation and maintenance message includes: repairing the line of the photovoltaic string and the inverter location information.

10. The method according to any one of claims 4 to 6, characterized in that: The method further comprises: A shutdown instruction for the target photovoltaic component is generated; the shutdown instruction is used to instruct the photovoltaic component to execute an action of shutting down output.

Images