Method, system, device and storage medium for identifying low efficiency photovoltaic inverter assemblies

Abstract

The application discloses a kind of identification methods, systems, devices and storage medium of low-efficiency photovoltaic inverter assembly, applied to photovoltaic power generation technical field, comprising: the orientation and installation inclination of the photovoltaic inverter assembly to be measured in photovoltaic power station are acquired;The equivalent working time length of the photovoltaic inverter assembly to be measured in first time length is determined by the power generation of the photovoltaic inverter assembly to be measured in first time length and the installed capacity of the photovoltaic inverter assembly to be measured;Whether the photovoltaic inverter assembly to be measured is low-efficiency photovoltaic inverter assembly based on the orientation of the photovoltaic inverter assembly to be measured, installation inclination and equivalent working time length is determined.The application can effectively identify the low-efficiency photovoltaic inverter assembly of photovoltaic power station, and effectively improve the accuracy of identification result.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic power generation technology, and in particular to a method, system, device and storage medium for identifying inefficient photovoltaic inverter components. Background Technology

[0002] In recent years, the photovoltaic power generation industry has achieved rapid development. With the large-scale construction and grid connection of photovoltaic power plants, ensuring the long-term stable operation of these plants has become a crucial objective. For example, intelligent operation and maintenance platforms developed based on advanced IoT, AI, and big data technologies, and deeply applied artificial intelligence technologies, can achieve intelligent data collection, intelligent fault alarms, string fault location and intelligent diagnosis, automatic work order dispatch, closed-loop fault management, intelligent inspection, and intelligent trend analysis.

[0003] Currently, the power generation level of inverter modules in photovoltaic power plants is assessed. Specifically, based on the daily power generation and installed capacity of the photovoltaic inverter module, the equivalent operating time of the inverter module in a day is calculated. This equivalent operating time is then compared with a fixed threshold to determine whether the photovoltaic inverter module is inefficient, and thus decide whether maintenance is required. However, in practical applications, this detection method has low accuracy. It often results in situations where a photovoltaic inverter module is detected as inefficient, but after maintenance, it is found that the inverter module has no abnormalities.

[0004] In summary, how to effectively identify inefficient photovoltaic inverter components in photovoltaic power plants and improve the accuracy of the identification results is a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] The purpose of this invention is to provide a method, system, device, and storage medium for identifying inefficient photovoltaic inverter components, so as to effectively identify inefficient photovoltaic inverter components in photovoltaic power plants and improve the accuracy of the identification results.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0007] A method for identifying inefficient photovoltaic inverter modules, comprising:

[0008] Obtain the orientation and installation tilt angle of the photovoltaic inverter module under test in the photovoltaic power station;

[0009] The equivalent operating time of the photovoltaic inverter module under test in the first time period is determined by the power generation of the photovoltaic inverter module under test in the first time period and the installed capacity of the photovoltaic inverter module under test.

[0010] Based on the orientation, installation tilt angle, and equivalent operating time of the photovoltaic inverter module under test, it is determined whether the photovoltaic inverter module under test is an inefficient photovoltaic inverter module.

[0011] Preferably, determining whether the photovoltaic inverter module under test is an inefficient photovoltaic inverter module based on its orientation, installation tilt angle, and equivalent operating time includes:

[0012] The operating time of the photovoltaic inverter module with the orientation of the photovoltaic inverter module under test and the installation tilt angle of the photovoltaic inverter module under test is determined in a first time period and used as a reference time period;

[0013] Based on the deviation between the equivalent operating time and the reference time, it is determined whether the photovoltaic inverter module under test is an inefficient photovoltaic inverter module.

[0014] Preferably, determining whether the photovoltaic inverter module under test is an inefficient photovoltaic inverter module based on the deviation between the equivalent operating time and the reference time includes:

[0015] pass The calculation method determines the deviation rate r between the equivalent working time and the reference working time. 待测 ;

[0016] Determine the deviation rate r 待测 Is it below a preset first threshold?

[0017] If so, the photovoltaic inverter module under test is determined to be an inefficient photovoltaic inverter module; otherwise, the photovoltaic inverter module under test is determined not to be an inefficient photovoltaic inverter module.

[0018] in, To determine the operating duration of the photovoltaic inverter module with the orientation and installation tilt angle of the photovoltaic inverter module under test within a first time period, R 待测 The equivalent operating time of the photovoltaic inverter module under test within the first time period.

[0019] Preferably, the operating time of the photovoltaic inverter module having the orientation of the photovoltaic inverter module under test and the installation tilt angle of the photovoltaic inverter module under test within a first time period is determined as a reference time period, including:

[0020] Obtain the orientation of each photovoltaic inverter module in the photovoltaic power plant and group them according to their orientation;

[0021] Obtain the installation tilt angle of each photovoltaic inverter module in the photovoltaic power station, and classify the photovoltaic inverter modules in each group according to their different installation tilt angles;

[0022] In the classification of the photovoltaic inverter module under test, according to The calculation method determines the operating time of the photovoltaic inverter module with the orientation and installation tilt angle of the photovoltaic inverter module under test within a first time period. For reference duration;

[0023] Where m represents the total number of photovoltaic inverter modules in the category to which the photovoltaic inverter module under test belongs, i is a positive integer and 1≤i≤m, R i E represents the equivalent operating time of the i-th photovoltaic inverter module out of m photovoltaic inverter modules during the first time period. i Let C be the power generation of the i-th photovoltaic inverter module during the first time period. i Let be the installed capacity of the i-th photovoltaic inverter module. The operating time of the photovoltaic inverter module with the orientation and installation tilt angle of the photovoltaic inverter module under test within a first time period is determined.

[0024] Preferably, after obtaining the installation tilt angle of each photovoltaic inverter module in the photovoltaic power station, and classifying the photovoltaic inverter modules in each group according to their installation tilt angles, the method further includes:

[0025] Determine whether the total number m of photovoltaic inverter components in the category to which the photovoltaic inverter component under test belongs is greater than a preset first quantity value;

[0026] If so, then perform the procedure according to the category to which the photovoltaic inverter component under test belongs. The calculation method determines the operating time of the photovoltaic inverter module with the orientation and installation tilt angle of the photovoltaic inverter module under test within a first time period. Operation;

[0027] If not, then proceed according to The calculation method determines the operating time of the photovoltaic inverter module with the orientation and installation tilt angle of the photovoltaic inverter module under test within a first time period. For reference duration;

[0028] Where n represents the total number of photovoltaic inverter modules in the photovoltaic power station, j is a positive integer and 1≤j≤n, H jE represents the equivalent conversion operating time of the j-th photovoltaic inverter module out of n photovoltaic inverter modules during the first time period. j Let C be the power generation of the j-th photovoltaic inverter module during the first time period. j Let j be the installed capacity of the j-th photovoltaic inverter module. To determine the operating duration of a photovoltaic inverter module with the orientation and installation tilt angle of the photovoltaic inverter module under test within a first time period, α j Let be the equivalent conversion factor of the j-th photovoltaic inverter module, and G j G represents the radiation emitted per unit time by the j-th photovoltaic inverter module under the actual orientation and installation tilt angle of the photovoltaic inverter module. t This represents the amount of radiation emitted per unit time by the j-th photovoltaic inverter module under the preset first orientation and first installation tilt angle;

[0029] Accordingly, based on the deviation between the equivalent operating time and the reference time, it is determined whether the photovoltaic inverter module under test is an inefficient photovoltaic inverter module, including:

[0030] Based on the deviation between the equivalent conversion operating time of the photovoltaic inverter module under test within a first time period and the reference time period, it is determined whether the photovoltaic inverter module under test is an inefficient photovoltaic inverter module.

[0031] Preferred, G j and G t All values ​​were obtained by modeling the photovoltaic power station and setting the corresponding parameters.

[0032] Preferably, before obtaining the orientation of each photovoltaic inverter module in the photovoltaic power plant, the method further includes:

[0033] Photovoltaic inverter components in the photovoltaic power station that are subject to power curtailment and / or faults and / or invalid power generation will be removed.

[0034] Accordingly, the orientation of each photovoltaic inverter module in the photovoltaic power plant is obtained, including:

[0035] Obtain the orientation of each photovoltaic inverter module remaining after the elimination operation in the photovoltaic power plant.

[0036] A system for identifying inefficient photovoltaic inverter modules, comprising:

[0037] The parameter acquisition module is used to acquire the orientation and installation tilt angle of the photovoltaic inverter component under test in the photovoltaic power station;

[0038] The equivalent working time calculation module is used to determine the equivalent working time of the photovoltaic inverter module under test in the first time period by using the power generation of the photovoltaic inverter module under test in the first time period and the installed capacity of the photovoltaic inverter module under test.

[0039] The identification execution module is used to determine whether the photovoltaic inverter component under test is an inefficient photovoltaic inverter component based on the orientation, installation tilt angle, and equivalent operating time of the photovoltaic inverter component under test.

[0040] A device for identifying inefficient photovoltaic inverter modules, comprising:

[0041] Memory, used to store computer programs;

[0042] A processor for executing the computer program to implement the steps of the method for identifying inefficient photovoltaic inverter components as described above.

[0043] A computer-readable storage medium storing a computer program that, when executed by a processor, implements the steps of the method for identifying inefficient photovoltaic inverter components as described above.

[0044] The applicant noted that traditional solutions use fixed standards to identify all inverter modules in a power station, neglecting the impact of orientation and tilt angle on their power generation capabilities. For example, in some distributed rooftop photovoltaic (PV) power stations, different roof types result in varying tilt angles for different modules, leading to inconsistent actual power generation capacity. Similarly, in some PV power stations with corrugated steel roofs, construction may place some modules on the south-facing slope and others on the north-facing slope, resulting in inconsistent orientations and consequently, inconsistent power generation capacity.

[0045] In this application, the solution considers not only the equivalent operating time of the photovoltaic inverter module under test, but also its orientation and installation tilt angle when determining whether the inverter module is inefficient. Specifically, the solution determines the equivalent operating time of the inverter module under test within a first time period based on its power generation and installed capacity. Furthermore, the solution also obtains the orientation and installation tilt angle of the inverter module in the photovoltaic power plant. Because this solution determines whether an inverter module is inefficient based on its orientation, installation tilt angle, and equivalent operating time, the accuracy of the results is high.

[0046] In summary, the solution proposed in this application can effectively identify inefficient photovoltaic inverter components in photovoltaic power plants and effectively improve the accuracy of the identification results. Attached Figure Description

[0047] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0048] Figure 1 This is a flowchart illustrating the implementation of a method for identifying inefficient photovoltaic inverter components according to the present invention.

[0049] Figure 2 This is a schematic diagram of the structure of an identification system for an inefficient photovoltaic inverter module according to the present invention;

[0050] Figure 3 This is a schematic diagram of the structure of an identification device for inefficient photovoltaic inverter components according to the present invention. Detailed Implementation

[0051] The core of this invention is to provide a method for identifying inefficient photovoltaic inverter components, which can effectively identify inefficient photovoltaic inverter components in photovoltaic power plants and effectively improve the accuracy of the identification results.

[0052] To enable those skilled in the art to better understand the present invention, the invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are merely some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0053] Please refer to Figure 1 , Figure 1 This is a flowchart illustrating an implementation method for identifying inefficient photovoltaic inverter modules according to the present invention. The method for identifying inefficient photovoltaic inverter modules may include the following steps:

[0054] Step S101: Obtain the orientation and installation tilt angle of the photovoltaic inverter module under test in the photovoltaic power station.

[0055] Specifically, based on the basic information of the photovoltaic power station, the orientation and installation tilt angle of each photovoltaic inverter component in the photovoltaic power station can be obtained. For example, in one scenario, the basic information of the photovoltaic power station is stored in a database in the form of a table. Through this table, various information, including the orientation and installation tilt angle, can be obtained for each photovoltaic inverter component in the photovoltaic power station.

[0056] Furthermore, it should be noted that in some cases, multiple photovoltaic (PV) panels may be connected to one inverter. That is, a single PV inverter module may include one or more PV panels. If there are multiple panels, under normal circumstances, these PV panels will have the same orientation and installation tilt angle. However, in some cases, due to factors such as terrain, the orientation / installation tilt angle of some PV panels may differ from that of the other PV panels in the PV inverter module. In this case, the orientation of each PV panel in the PV inverter module can be statistically analyzed, and the most frequent orientation can be taken as the orientation of the PV inverter module and recorded in the database. Similarly, the installation tilt angle of each PV panel in the PV inverter module can be statistically analyzed, and the most frequent installation tilt angle can be taken as the installation tilt angle of the PV inverter module and recorded in the database.

[0057] The photovoltaic inverter module under test described in this application can be any photovoltaic inverter module that needs to be identified in terms of power generation capacity. That is, the photovoltaic inverter module under test can be any photovoltaic inverter module in a photovoltaic power plant. Of course, in practical applications, the power generation capacity of the photovoltaic inverter modules in the entire photovoltaic power plant is usually identified at regular intervals. That is, each photovoltaic inverter module in the photovoltaic power plant can be used sequentially as the photovoltaic inverter module under test to perform the various steps of this application in order to determine which of the photovoltaic inverter modules in the photovoltaic power plant are inefficient photovoltaic inverter modules.

[0058] Step S102: Determine the equivalent operating time of the photovoltaic inverter module under test in the first time period by using the power generation of the photovoltaic inverter module under test in the first time period and the installed capacity of the photovoltaic inverter module under test.

[0059] The specific value of the first duration can be set and adjusted as needed, such as 1 day, 1 week, 1 month, etc. For example, in one implementation, the first duration is 1 day, then the power generation of the photovoltaic inverter module under test within the first duration is also the daily power generation of the photovoltaic inverter module under test.

[0060] It is understandable that photovoltaic inverter modules cannot receive sunlight at all times, and the intensity of the sunlight received will also change. Therefore, under different circumstances, the power generation value of the photovoltaic inverter module under test in the first time period will fluctuate. Therefore, in order to ensure the accuracy of the identification results, the first time period is usually not set too short, and can generally be set to 1 day or more.

[0061] The installed capacity of the photovoltaic inverter module under test is a known parameter, representing the power generation of the photovoltaic inverter module per unit time under a set light intensity, which is typically 1 hour. The installed capacity of the photovoltaic inverter module is affected by parameters such as the module model and the number of modules, which are usually determined and specified by the manufacturer at the time of shipment.

[0062] Dividing the power generation of the photovoltaic inverter module under test during the first time period by the installed capacity of the photovoltaic inverter module under test yields the equivalent operating time of the photovoltaic inverter module under test during the first time period. Taking the i-th photovoltaic inverter module as an example, it can be expressed as follows: That is, R i The equivalent operating time of the i-th photovoltaic inverter module during the first time period is the power generation E of the i-th photovoltaic inverter module during the first time period. i Divide by the installed capacity C of the photovoltaic inverter module i And thus obtained.

[0063] It can be seen that the equivalent operating time of the photovoltaic inverter module under test within the first time period reflects how long the photovoltaic inverter module under test has been working within the first time period. For example, if the first time period is 1 day, the photovoltaic inverter module under test generates 300KW in one day, and the installed capacity of the photovoltaic inverter module under test is 60KW, then 300÷60=5, indicating that the photovoltaic inverter module under test received the rated level of sunlight for 5 hours in this 1 day, that is, the equivalent operating time of the photovoltaic inverter module under test within the first time period is 5 hours.

[0064] Step S103: Based on the orientation, installation tilt angle, and equivalent operating time of the photovoltaic inverter module under test, determine whether the photovoltaic inverter module under test is an inefficient photovoltaic inverter module.

[0065] In the scheme of this application, when determining whether the photovoltaic inverter module under test is an inefficient photovoltaic inverter module, not only the equivalent operating time of the photovoltaic inverter module under test is considered, but also the orientation and installation tilt angle of the photovoltaic inverter module under test.

[0066] Since the orientation and installation tilt angle of photovoltaic inverter modules both affect their power generation capacity, in order to accurately determine whether a photovoltaic inverter module under test is an inefficient photovoltaic inverter module, a reference duration can usually be determined based on the orientation and installation tilt angle of the photovoltaic inverter module under test. By comparing the equivalent operating time of the photovoltaic inverter module under test with this reference duration, it can be determined whether the photovoltaic inverter module under test is an inefficient photovoltaic inverter module.

[0067] Of course, in other embodiments, other methods can be used to determine whether the photovoltaic inverter module under test is an inefficient photovoltaic inverter module, as long as the requirements of step S103 are met, taking into account not only the equivalent working time of the photovoltaic inverter module under test in the first time period, but also the orientation and installation tilt angle of the photovoltaic inverter module under test.

[0068] If the photovoltaic inverter module under test is determined to be an inefficient photovoltaic inverter module, a prompt message can be output and recorded so that maintenance personnel can take timely follow-up actions. For example, if the photovoltaic inverter module under test is determined to be an inefficient photovoltaic inverter module, the reason may be that the photovoltaic inverter module cannot effectively receive light energy due to obstruction by dust, debris, etc. Or, it may be due to the photovoltaic inverter module's own hardware failure, which causes the photovoltaic inverter module to be unable to effectively receive light energy, requiring staff to handle the fault.

[0069] In one specific embodiment of the present invention, step S103 may specifically include:

[0070] Step 1: Determine the operating time of the photovoltaic inverter module with the orientation and installation tilt angle of the photovoltaic inverter module under test within a first time period, as a reference time period;

[0071] Step 2: Based on the deviation between the equivalent working time and the reference time, determine whether the photovoltaic inverter module under test is an inefficient photovoltaic inverter module.

[0072] In this implementation, the reference duration refers to the operating time of the photovoltaic inverter module with the orientation and installation tilt angle of the photovoltaic inverter module under test within a first duration. In practical applications, the reference duration can be determined through data statistics or theoretical analysis.

[0073] Understandably, if the equivalent operating time of the photovoltaic inverter module under test within the first time period is similar to or even higher than the reference time period, it indicates that the photovoltaic inverter module under test has good power generation capacity. Conversely, if the equivalent operating time is lower than the reference time period and the difference is significant, it can be determined that the photovoltaic inverter module under test has poor power generation capacity, i.e., the photovoltaic inverter module under test is identified as an inefficient photovoltaic inverter module.

[0074] Of course, there are many ways to determine whether a photovoltaic inverter module under test is an inefficient photovoltaic inverter module based on the deviation between the equivalent working time and the reference time. For example, a simple way is to subtract the reference time from the equivalent working time of the photovoltaic inverter module under test in the first time period, and then determine whether the difference is higher than a set threshold. If it is not higher than the set threshold, it can be determined that the photovoltaic inverter module under test is an inefficient photovoltaic inverter module.

[0075] For example, in one specific embodiment of the present invention, although the direct subtraction method is relatively simple, the order of magnitude of the equivalent working time of the photovoltaic inverter module under test in the first time period may be different in different situations. Therefore, it is not easy to set the relevant threshold, or different thresholds need to be configured in different situations. Therefore, the deviation rate can be used to reflect the deviation between the equivalent working time and the reference time.

[0076] In one specific embodiment of the present invention, step two may specifically include:

[0077] pass The calculation method determines the deviation rate r between the equivalent working time and the reference working time. 待测 ;

[0078] Judgment deviation rate r 待测 Is it below a preset first threshold?

[0079] If so, the photovoltaic inverter module under test is determined to be an inefficient photovoltaic inverter module; otherwise, the photovoltaic inverter module under test is determined not to be an inefficient photovoltaic inverter module.

[0080] in, To determine the operating duration of the photovoltaic inverter module with the orientation and installation tilt angle of the photovoltaic inverter module under test within a first time period, R 待测 The equivalent operating time of the photovoltaic inverter module under test during the first time period.

[0081] In this implementation method This refers to the reference duration. This method of calculating the deviation rate, compared to the method described above which directly calculates R... 待测 and The subtraction method helps to more accurately reflect the deviation between the equivalent working time and the reference time, which in turn helps to ensure the identification accuracy of the solution in this application.

[0082] Of course, the deviation rate r was obtained. 待测 Next, it is necessary to determine the deviation rate r. 待测 Is it below a preset first threshold? If it is below the preset first threshold, then it indicates that R... 待测 A low value indicates poor power generation capacity of the photovoltaic inverter module under test, thus identifying it as an inefficient photovoltaic inverter module. Conversely, a high value indicates that the photovoltaic inverter module under test is normal and not an inefficient photovoltaic inverter module.

[0083] As described above, in practical applications, the reference duration can be determined through data statistics or theoretical analysis. This application further considers that the total number of photovoltaic inverter modules in a photovoltaic power plant is large, and there are usually multiple photovoltaic inverter modules with a certain orientation and installation tilt angle. Furthermore, in most cases, photovoltaic inverter modules can generate electricity normally, meaning that inefficient photovoltaic inverter modules are in the minority. Therefore, when determining the reference duration—that is, when determining the operating time of photovoltaic inverter modules with the orientation and installation tilt angle of the photovoltaic inverter module under test within a first time period—the power generation of such photovoltaic inverter modules can be statistically analyzed, and the required reference duration can be obtained by averaging. This makes the calculation method for determining the reference duration relatively simple and convenient.

[0084] For example, in one specific embodiment of the present invention, step one above may specifically include:

[0085] Obtain the orientation of each photovoltaic inverter module in the photovoltaic power plant and group them according to their orientation;

[0086] Obtain the installation tilt angle of each photovoltaic inverter module in the photovoltaic power station, and classify the photovoltaic inverter modules in each group according to their different installation tilt angles;

[0087] In the classification of the photovoltaic inverter module under test, according to The calculation method determines the operating time of the photovoltaic inverter module with the orientation and installation tilt angle of the photovoltaic inverter module under test within the first time period. For reference duration;

[0088] Where m represents the total number of photovoltaic inverter modules in the category to which the photovoltaic inverter module under test belongs, i is a positive integer and 1≤i≤m, R i E represents the equivalent operating time of the i-th photovoltaic inverter module out of m photovoltaic inverter modules during the first time period.i Let C be the power generation of the i-th photovoltaic inverter module during the first time period. i Let be the installed capacity of the i-th photovoltaic inverter module. The operating time of the photovoltaic inverter module with the orientation and installation tilt angle of the photovoltaic inverter module under test within a first time period is determined.

[0089] Specifically, in this implementation, when grouping according to different orientations, the number of groups can be set and adjusted as needed. For example, in one scenario, the orientation is divided according to four directions: east, west, south, and north. In another scenario, the orientation is divided according to eight directions: east, west, south, north, northwest, northeast, southwest, and southeast. It is also understood that, for example, if a photovoltaic inverter module is not oriented due north, but is closest to due north among the eight orientations, then that photovoltaic inverter module should be assigned to the due north group.

[0090] After the groups are divided, each photovoltaic inverter module in each group needs to be classified according to the different installation tilt angles. For example, within the installation tilt angle range of 0° to 90°, each 5° is used as a classification level to classify the photovoltaic inverter modules in that group.

[0091] Furthermore, in practical applications, adjustments can be made to each category. For example, in some cases, when the number of photovoltaic inverter modules in a certain category is small, these modules can be grouped into adjacent categories. For instance, in the 20° to 25° category within the north-facing group, if there are only two photovoltaic inverter modules, one with an installation tilt angle of 21° and the other 23.5°, the module with the 21° tilt angle can be moved to the 15° to 20° category, and the module with the 23.5° tilt angle can be placed in the 25° to 30° category. This is done because a small number of photovoltaic inverter modules in a category can affect the accuracy of identifying inefficient modules within that category. Therefore, photovoltaic inverter modules with similar installation tilt angles can be grouped into the same category.

[0092] After grouping and classifying, this implementation method follows the classification of the photovoltaic inverter components under test. The calculation method determines the operating time of the photovoltaic inverter module with the orientation and installation tilt angle of the photovoltaic inverter module under test within the first time period. For reference duration.

[0093] In other words, for photovoltaic inverter modules belonging to the same group and category, their orientation and installation tilt angle are considered to be consistent. Therefore, within the category to which the photovoltaic inverter module under test belongs, each photovoltaic inverter module in that category, including the one under test, is treated as follows: The equivalent operating time of the photovoltaic inverter module within the first time period is calculated, and then the average value is taken to obtain the reference time.

[0094] It can be seen that this implementation method determines the reference duration. It's very simple and convenient.

[0095] In one specific embodiment of the present invention, after obtaining the installation tilt angle of each photovoltaic inverter module in the photovoltaic power station, and classifying the photovoltaic inverter modules in each group according to their different installation tilt angles, the method may further include:

[0096] Determine whether the total number m of photovoltaic inverter modules in the category to which the photovoltaic inverter module under test belongs is greater than a preset first quantity value;

[0097] If so, then execute the procedure according to the category to which the photovoltaic inverter component under test belongs. The calculation method determines the operating time of the photovoltaic inverter module with the orientation and installation tilt angle of the photovoltaic inverter module under test within the first time period. Operation;

[0098] If not, then proceed according to The calculation method determines the operating time of the photovoltaic inverter module with the orientation and installation tilt angle of the photovoltaic inverter module under test within the first time period. For reference duration;

[0099] Where n represents the total number of photovoltaic inverter modules in the photovoltaic power station, j is a positive integer and 1≤j≤n, H j E represents the equivalent conversion operating time of the j-th photovoltaic inverter module out of n photovoltaic inverter modules during the first time period. j Let C be the power generation of the j-th photovoltaic inverter module during the first time period. j Let j be the installed capacity of the j-th photovoltaic inverter module. To determine the operating duration of the photovoltaic inverter module with the orientation and installation tilt angle of the photovoltaic inverter module under test within the first time period, α j Let be the equivalent conversion factor of the j-th photovoltaic inverter module, and G jG represents the radiation emitted per unit time by the j-th photovoltaic inverter module under the actual orientation and installation tilt angle of the photovoltaic inverter module. t This represents the amount of radiation emitted per unit time by the j-th photovoltaic inverter module under the preset first orientation and first installation tilt angle;

[0100] Accordingly, based on the deviation between the equivalent operating time and the reference time, it is determined whether the photovoltaic inverter module under test is an inefficient photovoltaic inverter module, including:

[0101] Based on the deviation between the equivalent conversion operating time of the photovoltaic inverter module under test and the reference time within the first time period, it is determined whether the photovoltaic inverter module under test is an inefficient photovoltaic inverter module.

[0102] In this implementation, after grouping and classifying, it is determined whether the total number m of photovoltaic inverter modules in the category to which the photovoltaic inverter module under test belongs is greater than a preset first quantity value, that is, whether the total number of photovoltaic inverter modules in the category to which the photovoltaic inverter module under test belongs is too low. The value of the first quantity value can be set as needed, for example, set to 5.

[0103] If the total quantity is not too low, it can be conveniently determined according to the aforementioned implementation method. This will not be repeated here. However, if the total number m in the category is too low, i.e., not greater than the preset first quantity value, if the average of the equivalent working time of each photovoltaic inverter component in the category within the first time period is still used as the required reference value according to the aforementioned implementation method, the obtained reference value may be unreasonable. For example, in one case, there are only 2 photovoltaic inverter components in a certain category, and for example, these 2 photovoltaic inverter components are actually inefficient photovoltaic inverter components. Then, the reference value determined according to the average of the equivalent working time of these 2 photovoltaic inverter components within the first time period is an inappropriate value. According to this reference value, it may not be possible to accurately identify that these 2 photovoltaic inverter components are inefficient photovoltaic inverter components.

[0104] In this implementation, when the total quantity m in the classification is too low, it is based on... The calculation method determines the operating time of the photovoltaic inverter module with the orientation and installation tilt angle of the photovoltaic inverter module under test within the first time period.

[0105] G j G represents the radiation emitted per unit time by the j-th photovoltaic inverter module under the actual orientation and installation tilt angle of the photovoltaic inverter module. tThis represents the radiation emitted per unit time by the j-th photovoltaic inverter module under a preset first orientation and first installation tilt angle. j and G t The value of can be determined through theoretical analysis or experimentation.

[0106] Furthermore, in one specific embodiment of the present invention, G j and G t All values ​​were obtained by modeling the photovoltaic power station and setting the corresponding parameters, which makes it relatively easy to determine G. j and G t The value of .

[0107] For example, PVsyst can be used to model a photovoltaic power station and simulate its operating status. Taking a specific photovoltaic inverter module as an example, the model needs to be input with the "power station latitude and longitude," as well as the "module model," "number of modules," "inverter model," "actual installation tilt angle," and "actual orientation of the module." The model's output is the radiation emitted by the photovoltaic inverter module per unit time under its actual orientation and installation tilt angle; that is, the model's output is G. j Then, the parameters "actual installation tilt angle of the component" and "actual orientation of the component" are modified to "first installation tilt angle" and "first orientation," respectively. The model output is the radiation of the photovoltaic inverter component per unit time under the preset first orientation and first installation tilt angle, i.e., the model output at this time is G. t .

[0108] Furthermore, the number of components described here refers to the number of photovoltaic panels in the photovoltaic inverter assembly.

[0109] It is understandable that, due to differences in inverter models, number of modules, and other parameters among different photovoltaic inverter modules, the equivalent conversion factor values ​​may differ for different photovoltaic inverter modules.

[0110] After obtaining the equivalent conversion factor of each photovoltaic inverter component in the photovoltaic power station, according to By calculating the equivalent conversion operating time of each photovoltaic inverter module, the average value can be obtained to determine the reference operating time for this implementation method.

[0111] Furthermore, it is understandable that, in this implementation method, when determining the deviation from the reference duration, the equivalent operating time of the photovoltaic inverter module under test within the first duration is not directly used. Instead, the equivalent conversion operating time of the photovoltaic inverter module under test within the first duration needs to be used. That is, the equivalent operating time needs to be multiplied by the equivalent conversion factor of the photovoltaic inverter module before comparing the deviation with the reference duration. For example, in a specific scenario, this can be expressed as: through The calculation method determines the equivalent conversion working time H. 待测 Deviation rate h between the reference duration and the reference duration 待测 .

[0112] In one specific embodiment of the present invention, before obtaining the orientation of each photovoltaic inverter component in the photovoltaic power station, the following may be included:

[0113] Photovoltaic inverter modules in photovoltaic power plants that experience power curtailment and / or malfunctions and / or invalid power generation will be removed.

[0114] Accordingly, the orientation of each photovoltaic inverter module in the photovoltaic power plant is obtained, including:

[0115] Obtain the orientation of each photovoltaic inverter module remaining after the elimination operation in the photovoltaic power plant.

[0116] This implementation takes into account that if a photovoltaic inverter component is determined to be in a limited state, a faulty state, or an invalid power generation state, such a photovoltaic inverter component can be eliminated to avoid affecting the identification results, thereby further improving the identification accuracy of the present application solution.

[0117] The applicant noted that traditional solutions use fixed standards to identify all inverter modules in a power station, neglecting the impact of orientation and tilt angle on their power generation capabilities. For example, in some distributed rooftop photovoltaic (PV) power stations, different roof types result in varying tilt angles for different modules, leading to inconsistent actual power generation capacity. Similarly, in some PV power stations with corrugated steel roofs, construction may place some modules on the south-facing slope and others on the north-facing slope, resulting in inconsistent orientations and consequently, inconsistent power generation capacity.

[0118] In this application, the solution considers not only the equivalent operating time of the photovoltaic inverter module under test, but also its orientation and installation tilt angle when determining whether the inverter module is inefficient. Specifically, the solution determines the equivalent operating time of the inverter module under test within a first time period based on its power generation and installed capacity. Furthermore, the solution also obtains the orientation and installation tilt angle of the inverter module in the photovoltaic power plant. Because this solution determines whether an inverter module is inefficient based on its orientation, installation tilt angle, and equivalent operating time, the accuracy of the results is high.

[0119] In summary, the solution proposed in this application can effectively identify inefficient photovoltaic inverter components in photovoltaic power plants and effectively improve the accuracy of the identification results.

[0120] Corresponding to the above method embodiments, this invention also provides an identification system for inefficient photovoltaic inverter components, which can be referred to in conjunction with the above.

[0121] See Figure 2 The diagram shown is a structural schematic of an identification system for inefficient photovoltaic inverter modules according to the present invention, comprising:

[0122] The parameter acquisition module 201 is used to acquire the orientation and installation tilt angle of the photovoltaic inverter component under test in the photovoltaic power station;

[0123] The equivalent working time calculation module 202 is used to determine the equivalent working time of the photovoltaic inverter module under test in the first time period by using the power generation of the photovoltaic inverter module under test in the first time period and the installed capacity of the photovoltaic inverter module under test.

[0124] The identification execution module 203 is used to determine whether the photovoltaic inverter module under test is an inefficient photovoltaic inverter module based on the orientation, installation tilt angle, and equivalent operating time of the photovoltaic inverter module under test.

[0125] In one specific embodiment of the present invention, the identification execution module 203 includes:

[0126] The reference duration determination unit is used to determine the operating duration of the photovoltaic inverter module with the orientation of the photovoltaic inverter module under test and the installation tilt angle of the photovoltaic inverter module under test within a first duration, as a reference duration;

[0127] The identification execution unit is used to determine whether the photovoltaic inverter module under test is an inefficient photovoltaic inverter module based on the deviation between the equivalent working time and the reference time.

[0128] In one specific embodiment of the present invention, the identification execution unit is specifically used for:

[0129] pass The calculation method determines the deviation rate r between the equivalent working time and the reference working time. 待测 ;

[0130] Judgment deviation rate r 待测 Is it below a preset first threshold?

[0131] If so, the photovoltaic inverter module under test is determined to be an inefficient photovoltaic inverter module; otherwise, the photovoltaic inverter module under test is determined not to be an inefficient photovoltaic inverter module.

[0132] in, To determine the operating duration of the photovoltaic inverter module with the orientation and installation tilt angle of the photovoltaic inverter module under test within a first time period, R 待测 The equivalent operating time of the photovoltaic inverter module under test during the first time period.

[0133] In one specific embodiment of the present invention, the reference duration determination unit includes:

[0134] The grouping subunit is used to obtain the orientation of each photovoltaic inverter component in the photovoltaic power station and group them according to their orientation.

[0135] The classification subunit is used to obtain the installation tilt angle of each photovoltaic inverter component in the photovoltaic power station, and classify the photovoltaic inverter components in each group according to the different installation tilt angles.

[0136] The reference duration calculation unit is used to determine the classification of the photovoltaic inverter module under test according to... The calculation method determines the operating time of the photovoltaic inverter module with the orientation and installation tilt angle of the photovoltaic inverter module under test within the first time period. For reference duration;

[0137] Where m represents the total number of photovoltaic inverter modules in the category to which the photovoltaic inverter module under test belongs, i is a positive integer and 1≤i≤m, R i E represents the equivalent operating time of the i-th photovoltaic inverter module out of m photovoltaic inverter modules during the first time period. i Let C be the power generation of the i-th photovoltaic inverter module during the first time period. i Let be the installed capacity of the i-th photovoltaic inverter module. The operating time of the photovoltaic inverter module with the orientation and installation tilt angle of the photovoltaic inverter module under test within a first time period is determined.

[0138] In one specific embodiment of the present invention, after the classification subunit obtains the installation tilt angle of each photovoltaic inverter module in the photovoltaic power station, and classifies the photovoltaic inverter modules in each group according to their different installation tilt angles, the invention further includes a judgment subunit for:

[0139] Determine whether the total number m of photovoltaic inverter modules in the category to which the photovoltaic inverter module under test belongs is greater than a preset first quantity value;

[0140] If yes, then the reference duration calculation unit is triggered; otherwise, it is performed according to... The calculation method determines the operating time of the photovoltaic inverter module with the orientation and installation tilt angle of the photovoltaic inverter module under test within the first time period. For reference duration;

[0141] Where n represents the total number of photovoltaic inverter modules in the photovoltaic power station, j is a positive integer and 1≤j≤n, H j E represents the equivalent conversion operating time of the j-th photovoltaic inverter module out of n photovoltaic inverter modules during the first time period. j Let C be the power generation of the j-th photovoltaic inverter module during the first time period. j Let j be the installed capacity of the j-th photovoltaic inverter module. To determine the operating duration of the photovoltaic inverter module with the orientation and installation tilt angle of the photovoltaic inverter module under test within the first time period, α j Let be the equivalent conversion factor of the j-th photovoltaic inverter module, and G j G represents the radiation emitted per unit time by the j-th photovoltaic inverter module under the actual orientation and installation tilt angle of the photovoltaic inverter module. t This represents the amount of radiation emitted per unit time by the j-th photovoltaic inverter module under the preset first orientation and first installation tilt angle;

[0142] Accordingly, the identification execution unit is specifically used for:

[0143] Based on the deviation between the equivalent conversion operating time of the photovoltaic inverter module under test and the reference time within the first time period, it is determined whether the photovoltaic inverter module under test is an inefficient photovoltaic inverter module.

[0144] In one specific embodiment of the present invention, G j and Gt All values ​​were obtained by modeling the photovoltaic power station and setting the corresponding parameters.

[0145] In one specific embodiment of the present invention, before the grouping subunit obtains the orientation of each photovoltaic inverter component in the photovoltaic power station, a filtering unit is further included, for:

[0146] Photovoltaic inverter modules in photovoltaic power plants that experience power curtailment and / or malfunctions and / or invalid power generation will be removed.

[0147] Accordingly, the orientation of each photovoltaic inverter module in the photovoltaic power plant is obtained, including:

[0148] Obtain the orientation of each photovoltaic inverter module remaining after the elimination operation in the photovoltaic power plant.

[0149] Corresponding to the above methods and system embodiments, this invention also provides an identification device for inefficient photovoltaic inverter components and a computer-readable storage medium, which can be referred to in conjunction with the above.

[0150] See Figure 3 The identification device for the inefficient photovoltaic inverter module may include:

[0151] Memory 301 is used to store computer programs;

[0152] Processor 302 is configured to execute a computer program to implement the steps of the method for identifying inefficient photovoltaic inverter components as described in any of the above embodiments.

[0153] The computer-readable storage medium stores a computer program that, when executed by a processor, implements the steps of the method for identifying inefficient photovoltaic inverter components as described in any of the above embodiments. The computer-readable storage medium referred to herein includes random access memory (RAM), main memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disks, removable disks, CD-ROMs, or any other form of storage medium known in the art.

[0154] It should also be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0155] Those skilled in the art will further recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of the various examples have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementations should not be considered beyond the scope of this invention.

[0156] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the technical solutions and core ideas of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the protection scope of the present invention.

Claims

1. A method for identifying inefficient photovoltaic inverter modules, characterized in that, include: Obtain the orientation and installation tilt angle of the photovoltaic inverter module under test in the photovoltaic power station; The equivalent operating time of the photovoltaic inverter module under test in the first time period is determined by the power generation of the photovoltaic inverter module under test in the first time period and the installed capacity of the photovoltaic inverter module under test. Based on the orientation, installation tilt angle, and equivalent operating time of the photovoltaic inverter module under test, it is determined whether the photovoltaic inverter module under test is an inefficient photovoltaic inverter module. Based on the orientation, installation tilt angle, and equivalent operating time of the photovoltaic inverter module under test, it is determined whether the photovoltaic inverter module under test is an inefficient photovoltaic inverter module, including: The operating time of the photovoltaic inverter module with the orientation of the photovoltaic inverter module under test and the installation tilt angle of the photovoltaic inverter module under test is determined in a first time period and used as a reference time period; Based on the deviation between the equivalent working time and the reference time, it is determined whether the photovoltaic inverter module under test is an inefficient photovoltaic inverter module. The operating duration of the photovoltaic inverter module with the orientation and installation tilt angle of the photovoltaic inverter module under test within a first time period is determined as a reference duration, including: Obtain the orientation of each photovoltaic inverter module in the photovoltaic power plant and group them according to their orientation; Obtain the installation tilt angle of each photovoltaic inverter module in the photovoltaic power station, and classify the photovoltaic inverter modules in each group according to their different installation tilt angles; In the classification of the photovoltaic inverter module under test, according to The calculation method determines the operating time of the photovoltaic inverter module with the orientation and installation tilt angle of the photovoltaic inverter module under test within a first time period. This is for reference duration; Where m represents the total number of photovoltaic inverter modules in the category to which the photovoltaic inverter module under test belongs, and i is a positive integer and 1≤i≤m. This represents the equivalent operating time of the i-th photovoltaic inverter module out of m photovoltaic inverter modules during the first time period. Let be the power generation of the i-th photovoltaic inverter module during the first time period. Let be the installed capacity of the i-th photovoltaic inverter module. The operating time of the photovoltaic inverter module with the orientation of the photovoltaic inverter module under test and the installation tilt angle of the photovoltaic inverter module under test within a first time period is determined. After obtaining the installation tilt angle of each photovoltaic inverter module in the photovoltaic power plant, and classifying the photovoltaic inverter modules in each group according to their installation tilt angle, the process also includes: Determine whether the total number m of photovoltaic inverter components in the category to which the photovoltaic inverter component under test belongs is greater than a preset first quantity value; If so, then perform the procedure according to the category to which the photovoltaic inverter component under test belongs. The calculation method determines the operating time of the photovoltaic inverter module with the orientation and installation tilt angle of the photovoltaic inverter module under test within a first time period. Operation; If not, then proceed according to The calculation method determines the operating time of the photovoltaic inverter module with the orientation and installation tilt angle of the photovoltaic inverter module under test within a first time period. This is for reference duration; Where n represents the total number of photovoltaic inverter modules in the photovoltaic power station, and j is a positive integer where 1 ≤ j ≤ n. This represents the equivalent conversion operating time of the j-th photovoltaic inverter module out of n photovoltaic inverter modules within the first time period. Let J be the power generation of the j-th photovoltaic inverter module during the first time period. Let j be the installed capacity of the j-th photovoltaic inverter module. To determine the operating time of the photovoltaic inverter module with the orientation and installation tilt angle of the photovoltaic inverter module under test within a first time period, Let be the equivalent conversion factor of the j-th photovoltaic inverter module, and , This represents the radiation emitted per unit time by the j-th photovoltaic inverter module, given its actual orientation and installation tilt angle. This represents the amount of radiation emitted per unit time by the j-th photovoltaic inverter module under the preset first orientation and first installation tilt angle; Accordingly, based on the deviation between the equivalent operating time and the reference time, it is determined whether the photovoltaic inverter module under test is an inefficient photovoltaic inverter module, including: Based on the deviation between the equivalent conversion operating time of the photovoltaic inverter module under test within a first time period and the reference time period, it is determined whether the photovoltaic inverter module under test is an inefficient photovoltaic inverter module.

2. The method for identifying inefficient photovoltaic inverter modules according to claim 1, characterized in that, Based on the deviation between the equivalent operating time and the reference time, determining whether the photovoltaic inverter module under test is an inefficient photovoltaic inverter module includes: pass The calculation method determines the deviation rate between the equivalent working time and the reference working time. ; Determine the deviation rate Is it below a preset first threshold? If so, the photovoltaic inverter module under test is determined to be an inefficient photovoltaic inverter module; otherwise, the photovoltaic inverter module under test is determined not to be an inefficient photovoltaic inverter module. in, To determine the operating time of the photovoltaic inverter module with the orientation and installation tilt angle of the photovoltaic inverter module under test within a first time period, The equivalent operating time of the photovoltaic inverter module under test within the first time period.

3. The method for identifying inefficient photovoltaic inverter modules according to claim 1, characterized in that, and All values ​​were obtained by modeling the photovoltaic power station and setting the corresponding parameters.

4. The method for identifying inefficient photovoltaic inverter modules according to any one of claims 1 to 3, characterized in that, Before obtaining the orientation of each photovoltaic inverter module in the photovoltaic power plant, the following steps are also included: Photovoltaic inverter components in the photovoltaic power station that are subject to power curtailment and / or faults and / or invalid power generation will be removed. Accordingly, the orientation of each photovoltaic inverter module in the photovoltaic power plant is obtained, including: Obtain the orientation of each photovoltaic inverter module remaining after the elimination operation in the photovoltaic power plant.

5. A system for identifying inefficient photovoltaic inverter modules, characterized in that, include: The parameter acquisition module is used to acquire the orientation and installation tilt angle of the photovoltaic inverter component under test in the photovoltaic power station; The equivalent working time calculation module is used to determine the equivalent working time of the photovoltaic inverter module under test in the first time period by using the power generation of the photovoltaic inverter module under test in the first time period and the installed capacity of the photovoltaic inverter module under test. The identification execution module is used to determine whether the photovoltaic inverter component under test is an inefficient photovoltaic inverter component based on the orientation, installation tilt angle, and equivalent operating time of the photovoltaic inverter component under test. The identification and execution module includes: The reference duration determination unit is used to determine the operating duration of the photovoltaic inverter module with the orientation of the photovoltaic inverter module under test and the installation tilt angle of the photovoltaic inverter module under test within a first duration, as a reference duration; An identification execution unit is used to determine whether the photovoltaic inverter module under test is an inefficient photovoltaic inverter module based on the deviation between the equivalent working time and the reference time. The reference duration determination unit includes: The grouping subunit is used to obtain the orientation of each photovoltaic inverter component in the photovoltaic power station and group them according to their orientation. The classification subunit is used to obtain the installation tilt angle of each photovoltaic inverter component in the photovoltaic power station, and classify the photovoltaic inverter components in each group according to the different installation tilt angles. The reference duration calculation unit is used to determine the classification of the photovoltaic inverter module under test according to... The calculation method determines the operating time of the photovoltaic inverter module with the orientation and installation tilt angle of the photovoltaic inverter module under test within the first time period. This is for reference duration; Where m represents the total number of photovoltaic inverter modules in the category to which the photovoltaic inverter module under test belongs, and i is a positive integer and 1≤i≤m. This represents the equivalent operating time of the i-th photovoltaic inverter module out of m photovoltaic inverter modules during the first time period. Let be the power generation of the i-th photovoltaic inverter module during the first time period. Let be the installed capacity of the i-th photovoltaic inverter module. The operating time of the photovoltaic inverter module with the orientation and installation tilt angle of the photovoltaic inverter module under test within the first time period is determined. After the classification subunit obtains the installation tilt angle of each photovoltaic inverter module in the photovoltaic power station, and classifies the photovoltaic inverter modules in each group according to their installation tilt angle, the system also includes a judgment subunit for: Determine whether the total number m of photovoltaic inverter modules in the category to which the photovoltaic inverter module under test belongs is greater than a preset first quantity value; If yes, then the reference duration calculation unit is triggered; otherwise, it is performed according to... The calculation method determines the operating time of the photovoltaic inverter module with the orientation and installation tilt angle of the photovoltaic inverter module under test within the first time period. This is for reference duration; Where n represents the total number of photovoltaic inverter modules in the photovoltaic power station, and j is a positive integer where 1 ≤ j ≤ n. This represents the equivalent conversion operating time of the j-th photovoltaic inverter module out of n photovoltaic inverter modules within the first time period. Let J be the power generation of the j-th photovoltaic inverter module during the first time period. Let j be the installed capacity of the j-th photovoltaic inverter module. To determine the operating time of the photovoltaic inverter module with the orientation and installation tilt angle of the photovoltaic inverter module under test within a first time period, Let be the equivalent conversion factor of the j-th photovoltaic inverter module, and , This represents the radiation emitted per unit time by the j-th photovoltaic inverter module, given its actual orientation and installation tilt angle. This represents the amount of radiation emitted per unit time by the j-th photovoltaic inverter module under the preset first orientation and first installation tilt angle; Accordingly, the identification execution unit is specifically used for: Based on the deviation between the equivalent conversion operating time of the photovoltaic inverter module under test and the reference time within the first time period, it is determined whether the photovoltaic inverter module under test is an inefficient photovoltaic inverter module.

6. A device for identifying inefficient photovoltaic inverter modules, characterized in that, include: Memory, used to store computer programs; A processor for executing the computer program to implement the steps of the method for identifying inefficient photovoltaic inverter components as described in any one of claims 1 to 4.

7. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed by a processor, implements the steps of the method for identifying inefficient photovoltaic inverter components as described in any one of claims 1 to 4.

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