A selective control method and related device for photovoltaic array

Abstract

The present invention belongs to the technical field of photovoltaic power stations, and relates to the field of photovoltaic array control. Specifically, a selective control method and related device of a photovoltaic array are disclosed; wherein, the selective control method of the photovoltaic array includes the following steps: step 1, based on the online screen of the host computer, obtaining the trigger instruction of the button; step 2, based on the trigger instruction, using the pre-built array selection control model to issue a control instruction to the array device associated with the button. The technical solution provided by the present invention can reduce the complexity of operation, improve the timeliness of the equipment that requires instantaneous linkage operation, solve the problem of inoperability caused by equipment failure, improve the speed of issuing equipment instructions, and save database memory.

Description

Technical Field

[0001] The present invention belongs to the technical field of photovoltaic power stations, relates to the field of photovoltaic array control, and in particular to a selective control method of a photovoltaic array and related devices. Background Art

[0002] With the transformation of the global energy structure, the new energy industry is gradually becoming an important direction for economic development in various countries. The development of new energy is of great significance for optimizing the energy structure and promoting sustainable economic development.

[0003] Photovoltaic power generation is a clean energy with the advantages of high efficiency, environmental protection, and sustainable utilization. In recent years, the installed capacity of photovoltaic power generation has continued to increase, and the photovoltaic new energy industry has maintained a rapid growth trend. With the advancement of technology and the reduction of costs, the cost of photovoltaic power generation has gradually decreased, making the commercial application of photovoltaic power generation develop rapidly.

[0004] At present, although the photovoltaic new energy industry has made some progress, there are still some technical problems that need to be solved in the photovoltaic array control of photovoltaic power stations, mainly including:

[0005] (1) Photovoltaic power stations generally have dozens of photovoltaic array systems, which are equipped with several inverters and other equipment. Operators often need to operate the equipment in the entire plant one by one. This control method makes the operation complicated and also makes the timeliness of equipment that requires instantaneous linkage operation low;

[0006] (2) The logic of equipment selection strategy is mostly set in logic control devices such as controllers and programmable logic controllers (PLCs). This solution results in the smooth implementation of operation control relying on the normal operation of the logic control devices. Once the equipment fails, the equipment in the entire plant will be unable to operate;

[0007] (3) The data flow in the existing technical solutions is generally: local equipment signal - communication management machine - host computer - controller - host computer - communication management machine - local control signal; there are many control and communication transmission links, and the control signal is sent slowly;

[0008] (4) When establishing a database, it is often necessary to establish two sets (i.e., the device communication database and the controller communication point database), which increases memory usage. Summary of the invention

[0009] The purpose of the present invention is to provide a selective control method and related device for a photovoltaic array to solve one or more of the above-mentioned technical problems. The technical solution provided by the present invention can reduce the complexity of operation, improve the timeliness of devices that require instantaneous linkage operation, solve the problem of inoperability caused by device failure, improve the speed of issuing device instructions, and save database memory.

[0010] In order to achieve the above object, the present invention adopts the following technical solutions:

[0011] In a first aspect, the present invention provides a method for selectively controlling a photovoltaic array, comprising the following steps:

[0012] Step 1, based on the online screen of the host computer, obtain the trigger instruction of the button;

[0013] Step 2, based on the trigger instruction, using a pre-built matrix selection control model to issue a control instruction to the matrix device associated with the button;

[0014] The steps of constructing the matrix selection control model include:

[0015] Use the database configuration tool to obtain the equipment measurement point data of each photovoltaic array in the photovoltaic power station and import it into the database of the host computer;

[0016] Adding virtual remote signal measuring points in the synthesis information column of the database configuration tool; wherein the virtual remote signal measuring points include instruction points and status points;

[0017] Establishing a matrix selection model in the logic editing interface of the programmable platform, and adding multiple instances using the matrix selection model as a template in the instance interface of the programmable platform; in the online interface of the programmable platform, associating the online logic output terminal with the remote control point in the device measurement point, and associating the logic input terminal with the virtual remote signal measurement point;

[0018] In the offline editing interface of the upper computer screen, associate the button command with the command point in the virtual remote signal measurement point, and associate the button color change with the status point in the virtual remote signal measurement point.

[0019] A further improvement of the method of the present invention is that the step of using a database configuration tool to obtain the device measurement point data of each photovoltaic array in the photovoltaic power station and importing it into the database of the host computer includes:

[0020] Create a TXT point table file in a preset fixed format according to the equipment points of each photovoltaic array in the photovoltaic power station;

[0021] Use the database configuration tool to establish a plant station containing each photovoltaic array and import the TXT point table file; after the database configuration tool is released, the equipment measurement point data is imported into the database of the host computer.

[0022] A further improvement of the method of the present invention is that the host computer communicates with the communication management machine of each photovoltaic array in the photovoltaic power station.

[0023] A further improvement of the method of the present invention is that the upper computer communicates with the communication management machine of each photovoltaic array in the photovoltaic power station in the following manner:

[0024] In each photovoltaic array of the photovoltaic power station, the device signals are collected to the communication management machine using the modbus-RTU protocol;

[0025] The host computer and the communication management machines of each photovoltaic array are connected to the core switch, and the host computer establishes communication with each photovoltaic array using the 104 communication protocol.

[0026] A further improvement of the method of the present invention is that the upper computer and the communication management machines of each photovoltaic array are all connected to the core switch in the following implementation form:

[0027] The communication management machines of each photovoltaic array are connected in series via optical fiber to the core switch, and the host computer is connected to the core switch via a network cable.

[0028] A further improvement of the method of the present invention is that in step 1, the trigger instruction is an instruction for selecting the equipment of the entire plant, an instruction for selecting a part of the array, or an instruction for selecting a part of the inverter.

[0029] A further improvement of the method of the present invention is that in step 2, if the trigger instruction is an instruction for selecting the equipment of the entire plant station, the control instruction is directly sent to the inverter equipment of the entire plant station; if the trigger instruction is an instruction for selecting part of the array, the control instruction is directly sent to the inverter equipment in the selected array; if the trigger instruction is an instruction for selecting part of the inverter, the control instruction is directly sent to the selected inverter equipment.

[0030] In a second aspect, the present invention provides a selective control system for a photovoltaic array, comprising:

[0031] The trigger instruction acquisition module is used to obtain the trigger instruction of the button based on the online screen of the host computer;

[0032] A control instruction issuing module, used for issuing a control instruction to the square array device associated with the button based on the trigger instruction and using a pre-built square array selection control model;

[0033] The steps of constructing the matrix selection control model include:

[0034] Use the database configuration tool to obtain the equipment measurement point data of each photovoltaic array in the photovoltaic power station and import it into the database of the host computer;

[0035] Adding virtual remote signal measuring points in the synthesis information column of the database configuration tool; wherein the virtual remote signal measuring points include instruction points and status points;

[0036] Establishing a matrix selection model in the logic editing interface of the programmable platform, and adding multiple instances using the matrix selection model as a template in the instance interface of the programmable platform; in the online interface of the programmable platform, associating the online logic output terminal with the remote control point in the device measurement point, and associating the logic input terminal with the virtual remote signal measurement point;

[0037] In the offline editing interface of the upper computer screen, associate the button command with the command point in the virtual remote signal measurement point, and associate the button color change with the status point in the virtual remote signal measurement point.

[0038] According to a third aspect of the present invention, there is provided an electronic device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, a selective control method for a photovoltaic array as described in any one of the first aspects of the present invention is implemented.

[0039] According to a fourth aspect of the present invention, there is provided a non-transitory computer-readable storage medium having a computer program stored thereon, wherein when the computer program is executed by a processor, the selective control method of a photovoltaic array as described in any one of the first aspects of the present invention is implemented.

[0040] Compared with the prior art, the present invention has the following beneficial effects:

[0041] The present invention specifically discloses a selective control method and related devices for a photovoltaic array, which can reduce the complexity of operations, improve the timeliness of devices that require instantaneous linkage operations, solve the problem of inoperability caused by equipment failure, increase the speed of issuing equipment instructions, and save database memory. Specifically, the technical innovation of the present invention relates to an important improvement in the background management system of photovoltaic power stations, especially in the control strategy for operating plant equipment. This strategy directly implemented in the photovoltaic background has many significant advantages, including: 1) Simplifying operation instructions: Through flexible selective configuration schemes, operators can more conveniently and quickly select and operate various equipment in photovoltaic power stations. This simplification not only reduces the complexity of operation, but also improves work efficiency; 2) Improving timeliness: In the case of instantaneous linkage operation of equipment, this strategy can ensure the timeliness and accuracy of operation, thereby improving the response speed of the entire system; 3) Avoiding the impact of failures: Using device database virtual points to directly implement logical operations means that even if the controller or PLC fails, it will not affect the normal operation of the system. This design greatly improves the stability and reliability of the system; 4) Simplifying the intermediate links of data flow: Using virtual device programming and instruction issuance can reduce the transmission and processing links of data flow in the system, thereby speeding up the issuance of device instructions and reducing the possibility of errors; 5) Saving resources and expanding capabilities: Combining the communication database and the logic database into one not only saves database memory resources, but also increases the number of accessible devices, improving the scalability and compatibility of the system. In summary, the strategy of flexibly and quickly selecting and operating plant equipment directly implemented in the photovoltaic background of the present invention can significantly improve the performance and efficiency of the photovoltaic power station background management system through a series of innovative designs and technical applications. It can not only reduce the operating difficulty and workload of operators, but also improve the stability and reliability of the system, thereby providing a strong technical guarantee for the safe and efficient operation of photovoltaic power stations. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below; obviously, the drawings described below are some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0043] Figure 1 It is a flow chart of a selective control method of a photovoltaic array in an embodiment of the present invention.

[0044] Figure 2 It is an internal logic diagram of a multi-mode control process in an embodiment of the present invention.

[0045] Figure 3 It is a schematic diagram of a selective control system of a photovoltaic array in an embodiment of the present invention. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings in the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0047] See also Figure 1 In an embodiment of the present invention, a selective control method for a photovoltaic array is provided to achieve flexible selection and rapid control of all equipment in a photovoltaic power station, which specifically includes the following steps:

[0048] Step 1, based on the online screen of the host computer, obtain the trigger instruction of the button;

[0049] Step 2, based on the trigger instruction, using the pre-built matrix selection control model to issue a control instruction to the matrix device associated with the button; explanatory, the result of issuing the control instruction is that the device can start or stop the matrix device selected by the operator (explanatory, reflected by the trigger instruction of the button);

[0050] The steps of constructing the matrix selection control model include:

[0051] Use the database configuration tool to obtain the equipment measurement point data of each photovoltaic array in the photovoltaic power station and import it into the database of the host computer;

[0052] Adding virtual remote signal measuring points in the synthesis information column of the database configuration tool; wherein the virtual remote signal measuring points include instruction points and status points;

[0053] Establishing a matrix selection model in the logic editing interface of the programmable platform; adding multiple instances using the matrix selection model as a template in the instance interface of the programmable platform; associating the online logic output terminal with the remote control point in the device measurement point, and associating the logic input terminal with the virtual remote signal measurement point in the online interface of the programmable platform; further explaining that the virtual remote signal measurement point is used as an intermediate point for the matrix selection model logic;

[0054] In the offline editing interface of the upper computer screen, associate the button command with the command point in the virtual remote signal measurement point, and associate the button color change with the status point in the virtual remote signal measurement point.

[0055] In the technical solution provided in the embodiment of the present invention, in order to solve the problem that the operation of the operating personnel when operating the start and stop of the equipment in the whole plant is often complicated, and the timeliness of the equipment that requires instantaneous linkage operation is not high, the method of the embodiment of the present invention realizes the control of the array equipment based on the host computer and the array selection control model, and can adopt flexible selection methods (such as select all / cancel all, select / cancel by array, select / cancel by array inverter, select / cancel fault-free equipment, etc.) to make the operation of many equipment in the power station simpler and faster, and improve the timeliness of the equipment that requires instantaneous linkage operation; in addition, in order to solve the limitation that the existing traditional selection logic model is made in the logic control device such as the controller or PLC, and the operation depends on the normal operation of the logic control device, the method of the embodiment of the present invention adopts the host computer virtual device, and can be configured in several host computers, which can greatly reduce the failure rate and can Improve the availability and reliability of the selection logic model; Furthermore, for the traditional logic model, two sets of databases need to be established (i.e., the device communication database and the controller or PLC communication point database), which increases the memory usage and the number of measurement points is limited by the upper limit of the device's communicable data. The embodiment of the present invention uses virtual measurement points (for example, the virtual measurement points of the photovoltaic SCADA background database can be used (the SCADA database is the self-developed database of the "Ruiwo" brand platform, the full name is the Ruiwo self-developed T316 database, and the English full name is "HNICS-T316-scada_modle"), that is, the above-mentioned "virtual remote signal measurement points") to select the logic construction. The virtual measurement points are directly associated with the operation screen, which simplifies the operation data flow, reduces the system memory usage, and has strong scalability.

[0056] Specifically, the embodiment of the present invention explains that in a photovoltaic power station, the photovoltaic control system is composed of a monitoring system, a control device, a protection device, and a communication system, etc.; wherein, the monitoring system uses a new energy system background, and the software of the new energy system background includes a programmable logic platform, a front-end communication configuration tool, a database configuration tool, a planning curve configuration tool, a screen configuration, and an online interface, etc. In the selective control method of the embodiment of the present invention, the plant area, array, or equipment to be controlled can be marked by selecting or canceling the selection before the control device, and the fault area or equipment can be set as unselectable by marking, so that the operation of the equipment is more convenient and safe; in addition, the programmable platform tool integrated in the photovoltaic scada background can be used to build a strategy, without adding programmable hardware or communicating with programmable hardware, which is convenient for maintenance; the selection and control logic only uses virtual measurement points in the scada library, without using measurement points in the PLC or controller, saving database space and achieving fast logic processing; the control command is sent to each plant area, area, or equipment at the same time through the programmable logic platform online tool, enhancing the timeliness of control.

[0057] In one embodiment of the present invention, the above-mentioned step of using a database configuration tool to obtain device measurement points of each photovoltaic power station multi-mode array and importing them into the database of the host computer may specifically include:

[0058] Create a TXT (plain text file) point table file in a preset fixed format according to the equipment points of each photovoltaic array in the photovoltaic power station;

[0059] Use the database configuration tool to establish a photovoltaic array plant and import the TXT point table file; after the database configuration tool is released, the equipment measurement points enter the database of the host computer.

[0060] In one embodiment of the present invention, the host computer communicates with the communication management machines of each photovoltaic array.

[0061] According to a specific exemplary solution of an embodiment of the present invention, in each photovoltaic array, the signals of devices such as inverters are collected to the communication management machine of the photovoltaic array using the modbus-RTU protocol; the communication management machines of each photovoltaic array are connected in series with optical fibers and connected to the core switch; the host computer is connected to the core switch with a network cable, and establishes communication with each photovoltaic array using the 104 communication protocol.

[0062] In one embodiment of the present invention, in the online interface of the programmable platform, after associating the online logic output terminal to the remote control point in the equipment measurement point and associating the logic input terminal to the virtual remote signal measurement point, a logic function test can be performed to ensure the correctness of the association.

[0063] In one embodiment of the present invention, based on the trigger instruction, the step of issuing an instruction to the matrix device associated with the button using a pre-built matrix selection control model includes three control modes: plant-wide matrix control (i.e., the trigger instruction is an instruction for selecting all plant station devices), multi-matrix selection control (i.e., the trigger instruction is an instruction for selecting some matrixes), and multi-inverter selection control (i.e., the trigger instruction is an instruction for selecting some inverters); wherein,

[0064] In the whole-plant array control mode: after the mode is started, the master remote control and master remote adjustment commands are sent to the whole-plant array inverters with one button, and the whole-plant array inverters can be started and stopped with one button remote control;

[0065] In the multi-array selection control mode: after the mode is started, the master remote control and master remote adjustment commands can control all inverters under the selected array with one button; multiple inverter arrays can be selected in forward or reverse directions;

[0066] In multi-inverter selection mode: after the mode is started, the master remote control and master remote adjustment commands control all selected inverters with one button; multiple inverters can be selected in forward or reverse direction.

[0067] In summary, the embodiment of the present invention discloses a strategy and tool for realizing flexible and fast selection of operation of plant equipment directly in the photovoltaic background. The strategy and tool adopt a flexible selective configuration scheme, which can greatly simplify the operation instructions of the operating personnel to the various equipment of the photovoltaic power station, reduce the complexity of the operation, and improve the timeliness of the equipment that needs instantaneous linkage operation; the device database virtual point is used to directly realize logical operations, avoiding the problem of inoperability caused by controller or PLC failure; the use of virtual device programming and instruction issuance simplifies the intermediate links of the data flow and improves the issuance speed of device instructions; the communication database and the logic database are combined into one, which saves database memory and expands the number of accessible devices.

[0068] See also Figure 2 In the technical solution exemplarily provided in the embodiment of the present invention, the multi-mode control logic may specifically include:

[0069] Determine whether the mode currently set by the operator is the whole-plant array control mode, the multi-array selection control mode, or the multi-inverter selection mode; among which,

[0070] If it is the whole-plant square array control mode, it is determined whether the inverter equipment of the whole plant is selected; if it is selected, the control command is directly sent to the inverter equipment of the whole plant;

[0071] If the control mode is selected for multiple arrays, it is determined whether some arrays are selected; if they are already selected, the control command is sent to the inverter devices in the selected array;

[0072] If it is a multi-inverter selection mode, it is determined whether some inverters are selected; if they are already selected, the control command is sent to the selected inverter device.

[0073] The following are device embodiments of the present invention, which can be used to implement the method embodiments of the present invention. For details not disclosed in the device embodiments, please refer to the method embodiments of the present invention.

[0074] See also Figure 3 In an embodiment of the present invention, a selective control system for a photovoltaic array is provided, comprising:

[0075] The trigger instruction acquisition module is used to obtain the trigger instruction of the button based on the online screen of the host computer;

[0076] A control instruction issuing module, used for issuing a control instruction to the square array device associated with the button based on the trigger instruction and using a pre-built square array selection control model;

[0077] The steps of constructing the matrix selection control model include:

[0078] Use the database configuration tool to obtain the equipment measurement point data of each photovoltaic array in the photovoltaic power station and import it into the database of the host computer;

[0079] Adding virtual remote signal measuring points in the synthesis information column of the database configuration tool; wherein the virtual remote signal measuring points include instruction points and status points;

[0080] Establishing a matrix selection model in the logic editing interface of the programmable platform, and adding multiple instances using the matrix selection model as a template in the instance interface of the programmable platform; in the online interface of the programmable platform, associating the online logic output terminal with the remote control point in the device measurement point, and associating the logic input terminal with the virtual remote signal measurement point;

[0081] In the offline editing interface of the upper computer screen, associate the button command with the command point in the virtual remote signal measurement point, and associate the button color change with the status point in the virtual remote signal measurement point.

[0082] In one embodiment of the present invention, a computer device is provided, the computer device includes a processor and a memory, the memory is used to store a computer program, the computer program includes program instructions, and the processor is used to execute the program instructions stored in the computer storage medium. The processor may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. It is the computing core and control core of the terminal, which is suitable for implementing one or more instructions, and is specifically suitable for loading and executing one or more instructions in the computer storage medium to implement the corresponding method flow or corresponding function; the processor described in the embodiment of the present invention can be used to perform the operation of the selective control method of the photovoltaic array.

[0083] In one embodiment of the present invention, a storage medium is provided, specifically a computer-readable storage medium (Memory), which is a memory device in a computer device for storing programs and data. It is understandable that the computer-readable storage medium here can include both built-in storage media in the computer device and, of course, extended storage media supported by the computer device. The computer-readable storage medium provides a storage space, which stores the operating system of the terminal. In addition, one or more instructions suitable for being loaded and executed by the processor are also stored in the storage space, and these instructions can be one or more computer programs (including program codes). It should be noted that the computer-readable storage medium here can be a high-speed RAM memory or a non-volatile memory, such as at least one disk memory. The processor can load and execute one or more instructions stored in the computer-readable storage medium to implement the corresponding steps of the selective control method of the photovoltaic array in the above embodiment.

[0084] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present application may adopt 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.

[0085] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes 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 device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing 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.

[0086] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising 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.

[0087] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing 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.

[0088] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A selective control method for a photovoltaic array, characterized in that: The following steps are involved: Step 1, based on the online screen of the host computer, obtain the trigger instruction of the button; Step 2, based on the trigger instruction, using a pre-built matrix selection control model to issue a control instruction to the matrix device associated with the button; The steps of constructing the matrix selection control model include: Use the database configuration tool to obtain the equipment measurement point data of each photovoltaic array in the photovoltaic power station and import it into the database of the host computer; Adding virtual remote signal measuring points in the synthesis information column of the database configuration tool; wherein the virtual remote signal measuring points include instruction points and status points; Establishing a matrix selection model in the logic editing interface of the programmable platform, and adding multiple instances using the matrix selection model as a template in the instance interface of the programmable platform; in the online interface of the programmable platform, associating the online logic output terminal with the remote control point in the device measurement point, and associating the logic input terminal with the virtual remote signal measurement point; In the offline editing interface of the upper computer screen, associate the button command with the command point in the virtual remote signal measurement point, and associate the button color change with the status point in the virtual remote signal measurement point.

2. A selective control method for a photovoltaic array according to claim 1, characterized in that: The step of using the database configuration tool to obtain the equipment measurement point data of each photovoltaic array in the photovoltaic power station and importing it into the database of the host computer includes: Create a TXT point table file in a preset fixed format according to the equipment points of each photovoltaic array in the photovoltaic power station; Use the database configuration tool to establish a plant station containing each photovoltaic array and import the TXT point table file; after the database configuration tool is released, the equipment measurement point data is imported into the database of the host computer.

3. A selective control method for a photovoltaic array according to claim 1, characterized in that: The host computer communicates with the communication management machine of each photovoltaic array in the photovoltaic power station.

4. A selective control method for a photovoltaic array according to claim 3, characterized in that: The upper computer communicates with the communication management machine of each photovoltaic array in the photovoltaic power station in the following manner: In each photovoltaic array of the photovoltaic power station, the device signals are collected to the communication management machine using the modbus-RTU protocol; The host computer and the communication management machines of each photovoltaic array are connected to the core switch, and the host computer establishes communication with each photovoltaic array using the 104 communication protocol.

5. A selective control method for a photovoltaic array according to claim 4, characterized in that: The upper computer and the communication management machines of each photovoltaic array are all connected to the core switch in the following implementation form: The communication management machines of each photovoltaic array are connected in series via optical fiber to the core switch, and the host computer is connected to the core switch via a network cable.

6. A selective control method for a photovoltaic array according to claim 1, characterized in that: In step 1, the trigger instruction is an instruction for selecting all the equipment in the plant, an instruction for selecting part of the array, or an instruction for selecting part of the inverter.

7. A selective control method for a photovoltaic array according to claim 6, characterized in that: In step 2, if the trigger instruction is an instruction for selecting all the equipment in the entire plant, the control instruction is directly sent to the inverter equipment in the entire plant; if the trigger instruction is an instruction for selecting some arrays, the control instruction is directly sent to the inverter equipment in the selected array; if the trigger instruction is an instruction for selecting some inverters, the control instruction is directly sent to the selected inverter equipment.

8. A selective control system for a photovoltaic array, characterized in that: include: The trigger instruction acquisition module is used to obtain the trigger instruction of the button based on the online screen of the host computer; A control instruction issuing module, used for issuing a control instruction to the square array device associated with the button based on the trigger instruction and using a pre-built square array selection control model; The steps of constructing the matrix selection control model include: Use the database configuration tool to obtain the equipment measurement point data of each photovoltaic array in the photovoltaic power station and import it into the database of the host computer; Adding virtual remote signal measuring points in the synthesis information column of the database configuration tool; wherein the virtual remote signal measuring points include instruction points and status points; Establishing a matrix selection model in the logic editing interface of the programmable platform, and adding multiple instances using the matrix selection model as a template in the instance interface of the programmable platform; in the online interface of the programmable platform, associating the online logic output terminal with the remote control point in the device measurement point, and associating the logic input terminal with the virtual remote signal measurement point; In the offline editing interface of the upper computer screen, associate the button command with the command point in the virtual remote signal measurement point, and associate the button color change with the status point in the virtual remote signal measurement point.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the program, the selective control method of the photovoltaic array according to any one of claims 1 to 7 is implemented.

10. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the selective control method of the photovoltaic array according to any one of claims 1 to 7 is implemented.

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