Photovoltaic module array unit operation status judgment method and electronic equipment

Abstract

The present application provides a method for determining the operating status of a photovoltaic component array unit and an electronic device, and relates to the field of photovoltaic technology. The method obtains identification attribute parameters of a first component array and a second component array in a preset photovoltaic power generation device; obtains operating parameters of the first component array and the second component array in a unit historical time period; the operating parameters include: actual power generation, and actual state parameters; according to the identification attribute parameters and the actual power generation, the actual power generation gain of the first component array and the second component array is calculated; according to the identification attribute parameters and the actual state parameters, the theoretical power generation gain of the first component array and the second component array is calculated; according to the actual power generation gain and the theoretical power generation gain, the operating status of the first component array and the second component array is determined. Thus, the operating status of the component array is accurately determined, which facilitates the staff to adjust the component array according to the operating status to maximize the power generation efficiency of the component array.

Description

Technical Field

[0001] The present invention relates to the field of photovoltaic technology, and in particular to a method for judging the operating state of a photovoltaic component array unit and electronic equipment. Background Art

[0002] In recent years, photovoltaic module technology has been continuously innovating, and the types of photovoltaic modules have been growing. With the increase in the number of photovoltaic power stations and the expansion of installed capacity, there are many types of photovoltaic modules in photovoltaic power stations of 100 megawatts. The electrical performance parameters of different types of photovoltaic module arrays are often different, and the power generation capacity of different types of photovoltaic module array units is not the same, which affects the power generation output of the power station. Moreover, the power generation state of photovoltaic modules will be affected when they are dusty, blocked or damaged, and they cannot exert the maximum power, which is not conducive to ensuring the revenue of the power station.

[0003] Each photovoltaic module array unit has a different rated power. If a certain array unit has a problem (for example, dust, obstruction, damage, etc.), it will lead to low power generation efficiency. According to the current power generation monitoring system, staff cannot accurately determine which array unit has a problem. Usually, they can only judge from the overall power generation of the power station. For example, if the power generation of the entire power station continues to be low within a cycle, it means that there is a problem with the array unit and the entire power station needs to be fully inspected. Comprehensive inspections are not targeted, the workload is large, and it is not easy to quickly solve the problem, resulting in a long maintenance period. The long-term inefficiency of the problematic array unit cannot be solved. In serious cases, it will also affect the operating status of adjacent array units.

[0004] In the prior art, although there are methods to determine the working conditions of photovoltaic modules based on the operating parameters of photovoltaic module array units, they are still limited to the circuit level. For example, by monitoring whether the photovoltaic module array units are short-circuited, or whether the current or power is greatly reduced, it is determined whether there are abnormalities in each photovoltaic module array unit. Monitoring whether there is a short circuit cannot determine whether the operating status of the entire module array is affected, and is usually only used to determine a larger fault in the power station; and judging the operating status of the photovoltaic module array unit by the power and current size is not accurate. This is because the power generation of the photovoltaic module array unit is affected by a variety of external factors, such as temperature, light incident angle, light intensity, etc., which will cause power or current changes. Simply monitoring current or power cannot avoid the influence of multiple factors. In other words, power or current changes may be caused by external factors. Therefore, it is impossible to know whether the power generation status of the photovoltaic module array unit is affected from a smaller power or current change. In addition, for the currently widely used double-glass modules, their operating power and current are also affected by the back power generation gain, and it is even more difficult to determine whether their power generation status is normal by the existing method of monitoring power or current. Summary of the invention

[0005] The purpose of the present invention is to address the deficiencies in the above-mentioned prior art and provide a method and electronic device for determining the operating status of a photovoltaic module array unit to solve the problem in the prior art that the power generation status of a photovoltaic module array unit cannot be accurately monitored.

[0006] To achieve the above purpose, the technical solution adopted in the embodiment of the present application is as follows:

[0007] In a first aspect, an embodiment of the present application provides a method for determining an operating state of a photovoltaic assembly array unit, the method comprising:

[0008] Obtaining identification attribute parameters of a first component array and a second component array in a preset photovoltaic power generation device;

[0009] Acquire operating parameters of the first component array and the second component array within a unit historical time period; the operating parameters include: actual power generation and actual state parameters;

[0010] Calculating actual power generation gains of the first component array and the second component array according to the identification attribute parameter and the actual power generation;

[0011] Calculating theoretical power generation gains of the first component array and the second component array according to the identification attribute parameter and the actual state parameter;

[0012] The operating states of the first component array and the second component array are determined according to the actual power generation gain and the theoretical power generation gain.

[0013] Optionally, the identification attribute parameter includes: rated power; and calculating the actual power generation gain of the first component array and the second component array according to the identification attribute parameter and the actual power generation includes:

[0014] Normalizing the actual power generation of the first component array according to the rated power of the first component array to obtain a first normalized power generation of the first component array;

[0015] Normalizing the actual power generation of the second component array according to the rated power of the second component array to obtain a second normalized power generation of the second component array;

[0016] The actual power generation amount gain is calculated according to the first normalized power generation amount and the second normalized power generation amount.

[0017] Optionally, the identification attribute parameter further includes: maximum power temperature coefficient; the actual state parameter further includes: instantaneous power and operating temperature;

[0018] The calculating the theoretical power generation gains of the first component array and the second component array according to the identification attribute parameter and the actual state parameter includes:

[0019] Calculating the temperature gain of the first component array and the second component array according to the maximum power temperature coefficient, the rated power, the instantaneous power and the operating temperature of the first component array and the second component array;

[0020] The theoretical power generation gain is calculated according to the temperature gain.

[0021] Optionally, calculating the temperature gains of the first component array and the second component array according to the maximum power temperature coefficient, the rated power, the instantaneous power and the operating temperature of the first component array and the second component array includes:

[0022] Calculating a first temperature loss of the first component array according to a maximum power temperature coefficient, a rated power, an instantaneous power, and an operating temperature of the first component array;

[0023] calculating a second temperature loss of the second component array according to a maximum power temperature coefficient, a rated power, an instantaneous power, and an operating temperature of the second component array;

[0024] The temperature gain is calculated according to the first temperature loss and the second temperature loss.

[0025] Optionally, if the first component array is a first double-glass component and the second component array is a second double-glass component, the identification attribute parameter further includes: a double-sided coefficient; the actual state parameter further includes: an actual total irradiance and an actual back irradiance;

[0026] The calculating the theoretical power generation gains of the first component array and the second component array according to the identification attribute parameter and the actual state parameter includes:

[0027] Calculating bifaciality gains of the first double-glass component and the second double-glass component according to the bifaciality coefficients, actual total radiation exposure, and actual back radiation exposure of the first double-glass component and the second double-glass component;

[0028] The theoretical power generation gain is calculated according to the bifaciality gain.

[0029] Optionally, if the first component array is a first double-glass component and the second component array is a second double-glass component, the actual state parameter further includes: instantaneous power and back irradiation;

[0030] The calculating the theoretical power generation gains of the first component array and the second component array according to the identification attribute parameter and the actual state parameter includes:

[0031] Calculating a first low radiation loss of the first double-glass component according to the first normalized power generation, the instantaneous power of the first double-glass component, and the back radiation amount;

[0032] Calculating the second minimum radiation loss of the second double-glass component according to the second normalized power generation, the instantaneous power of the second double-glass component, and the back radiation amount;

[0033] Calculating low radiation gains of the first double-glass component and the second double-glass component according to the first low radiation loss and the second low radiation loss;

[0034] The theoretical power generation gain is calculated according to the low irradiation gain.

[0035] Optionally, the identification attribute parameter further includes: a resistance parameter, and the actual state parameter further includes: an instantaneous current parameter;

[0036] The calculating the theoretical power generation gains of the first component array and the second component array according to the identification attribute parameter and the actual state parameter includes:

[0037] Calculating a first line loss of the first component array according to the first normalized power generation, an instantaneous current parameter, a resistance parameter, and a rated power of the first component array;

[0038] Calculating a second line loss of the second component array according to the second normalized power generation, an instantaneous current parameter, a resistance parameter, and a rated power of the second component array;

[0039] Calculating line loss gains of the first component array and the second component array according to the first line loss and the second line loss;

[0040] The theoretical power generation gain is calculated according to the line loss gain.

[0041] Optionally, the actual state parameters further include: incident angle parameters and instantaneous power;

[0042] The calculating the theoretical power generation gains of the first component array and the second component array according to the identification attribute parameter and the actual state parameter includes:

[0043] Calculating a first incident angle correction parameter of the first component array according to the incident angle parameter of the first component array;

[0044] Calculating a second incident angle correction parameter of the second component array according to the incident angle parameter of the second component array;

[0045] Calculating a first incident angle loss of the first component array according to the first incident angle correction parameter, the first normalized power generation, the instantaneous power and the rated power of the first component array;

[0046] Calculating a second incident angle loss of the second component array according to the second incident angle correction parameter, the second normalized power generation, the instantaneous power and the rated power of the second component array;

[0047] Calculating incident angle correction gains of the first component array and the second component array according to the first incident angle loss and the second incident angle loss;

[0048] The theoretical power generation gain is calculated according to the incident angle correction gain.

[0049] Optionally, determining the operating states of the first component array and the second component array according to the actual power generation gain and the theoretical power generation gain includes:

[0050] Calculating a gain difference between the actual power generation gain and the theoretical power generation gain;

[0051] If the absolute value of the gain difference is within a first preset difference interval, determining that the operation state of the first component array and the second component array is a stable operation state;

[0052] If the absolute value of the gain difference is within a second preset difference interval, it is determined that the operating state of the first component array and the second component array is a shielding operating state; and the minimum value of the second preset difference interval is greater than the maximum value of the first preset difference interval;

[0053] If the absolute value of the gain difference is greater than the maximum value of the second preset difference interval, it is determined that the operating state of the first component array and the second component array is a faulty operating state.

[0054] In a second aspect, an embodiment of the present application provides an electronic device, comprising: a processor and a storage medium, wherein the processor and the storage medium are connected to each other via a bus communication, the storage medium stores program instructions executable by the processor, and the processor calls the program stored in the storage medium to execute the steps of the method for determining the operating status of a photovoltaic component array unit as described in any one of the first aspects.

[0055] Compared with the prior art, this application has the following beneficial effects:

[0056] The present application provides a method for determining the operating status of a photovoltaic component array unit and an electronic device. The method obtains identification attribute parameters of a first component array and a second component array in a preset photovoltaic power generation device; obtains operating parameters of the first component array and the second component array in a unit historical time period; the operating parameters include: actual power generation and actual state parameters; according to the identification attribute parameters and the actual power generation, calculates the actual power generation gain of the first component array and the second component array; according to the identification attribute parameters and the actual state parameters, calculates the theoretical power generation gain of the first component array and the second component array; according to the actual power generation gain and the theoretical power generation gain, determines the operating status of the first component array and the second component array. Thus, the power generation data of the component array is used to characterize the influence of internal and external factors on the power generation capacity of the component array, and the power generation data of the component array is compared to accurately determine the operating status of the component array. The severity of the problem can be determined based on the operating status, which makes it easier for staff to accurately know the inefficient component array, reducing the time for troubleshooting, and then targeted maintenance and adjustment of the inefficient component array (for example, clearing dust, removing obstructions, and repairing fault locations), thereby improving maintenance efficiency and avoiding the influence of internal and external factors on power generation. By adjusting the inefficient component array to maximize its operating efficiency (for example, the power generation efficiency is 50% before dust removal and 85% after dust removal), the power generation is increased to maximize the power generation efficiency of the component array.

[0057] Furthermore, the method also introduces a bifacial coefficient, an actual total irradiation, and an actual back irradiation, and calculates the bifacial rate gain of the first double-glass component and the second double-glass component according to the bifacial coefficient, the actual total irradiation, and the actual back irradiation of the first double-glass component and the second double-glass component; calculates the theoretical power generation gain according to the bifacial rate gain; calculates the first low irradiation loss of the first double-glass component according to the first normalized power generation, the instantaneous power, and the back irradiation of the first double-glass component by introducing instantaneous power and back irradiation; calculates the second low irradiation loss of the second double-glass component according to the second normalized power generation, the instantaneous power, and the back irradiation of the second double-glass component; calculates the low irradiation gain of the first double-glass component and the second double-glass component according to the first low irradiation loss and the second low irradiation loss; and calculates the theoretical power generation gain according to the low irradiation gain. Furthermore, the power generation data of the double-glass modules is used to characterize the impact of internal and external factors on the power generation capacity of the double-glass modules. The power generation data of the double-glass modules is compared to accurately determine the operating status of the double-glass modules. The severity of the existing problems can be determined based on the operating status, which facilitates accurate maintenance by staff, improves maintenance efficiency, improves the operating efficiency of the double-glass modules, and increases power generation, thereby maximizing the power generation benefits of the double-glass modules. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0059] Figure 1 A schematic diagram of a flow chart of a method for determining an operating state of a photovoltaic module array unit provided in an embodiment of the present application;

[0060] Figure 2 A schematic diagram of a flow chart of a method for calculating actual power generation gain provided in an embodiment of the present application;

[0061] Figure 3 A schematic diagram of a flow chart of a method for calculating theoretical power generation gain provided in an embodiment of the present application;

[0062] Figure 4 A schematic diagram of a flow chart of a method for calculating temperature gain provided in an embodiment of the present application;

[0063] Figure 5 A schematic flow chart of another method for calculating theoretical power generation gain provided in an embodiment of the present application;

[0064] Figure 6 A schematic flow chart of another method for calculating theoretical power generation gain provided in an embodiment of the present application;

[0065] Figure 7 A schematic flow chart of another method for calculating theoretical power generation gain provided in an embodiment of the present application;

[0066] Figure 8 A schematic flow chart of another method for calculating theoretical power generation gain provided in an embodiment of the present application;

[0067] Fig. 9 A flowchart of a method for determining the operating status of a first component array and a second component array provided in an embodiment of the present application;

[0068] Fig.10 A schematic diagram of a photovoltaic module array unit operating status determination device provided in an embodiment of the present application;

[0069] Fig.11 A schematic diagram of an electronic device provided in an embodiment of the present application.

[0070] Icons: 1001 - first acquisition module, 1002 - second acquisition module, 1003 - first calculation module, 1004 - second calculation module, 1005 - determination module, 1101 - processor, 1102 - storage medium. DETAILED DESCRIPTION

[0071] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. The photovoltaic components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0072] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0073] In order to accurately determine the operating status of a photovoltaic module array so that the photovoltaic module array can play a maximum role, the present application provides a method for determining the operating status of a photovoltaic module array unit and an electronic device.

[0074] A method for determining the operating status of a photovoltaic module array unit provided in the present application is explained below through a specific example. Figure 1 The present invention provides a flow chart of a method for determining the operating status of a photovoltaic module array unit. The method may be performed by an electronic device, which may be a device with computing and processing functions, such as a desktop computer, a laptop computer, etc. Figure 1 As shown, the method includes:

[0075] S101, obtaining identification attribute parameters of a first component array and a second component array in a preset photovoltaic power generation device.

[0076] In a photovoltaic power station, each photovoltaic power generation unit has corresponding identification attribute parameters, which are fixed parameters and do not change with external factors or time.

[0077] For example, the first component array and the second component array may be components of the same type or components of different types.

[0078] S102: Obtain operating parameters of the first component array and the second component array within a unit historical time period.

[0079] The operating parameters include: actual power generation and actual state parameters.

[0080] In a photovoltaic power station, operating parameters are variable parameters that will change with external factors and time.

[0081] For example, the unit historical time period is a research time period for determining the operating status of the photovoltaic component array, for example, the unit historical time period may be a certain day, a certain week, etc. The actual power generation and actual status parameters may be obtained in real time through a preset photovoltaic power station information management platform.

[0082] S103, calculating actual power generation gains of the first component array and the second component array according to the identification attribute parameters and the actual power generation.

[0083] When calculating the actual power generation gain of the first component array and the second component array, the actual power generation gain of the first component array relative to the second component array may be calculated, or the actual power generation gain of the second component array relative to the first component array may be calculated.

[0084] The calculation methods of the two are similar, and the following embodiments are explained by taking the calculation of the actual power generation gain of the first component array relative to the second component array as an example.

[0085] S104, calculating theoretical power generation gains of the first component array and the second component array according to the identification attribute parameters and the actual state parameters.

[0086] When the first component array and the second component array operate normally, the theoretical power generation gain is affected by both external environmental factors and the first component array and the second component array. Therefore, it is necessary to comprehensively consider the identification attribute parameters and the actual state parameters.

[0087] S105: Determine the operating status of the first component array and the second component array according to the actual power generation gain and the theoretical power generation gain.

[0088] By comparing the actual power generation gain with the theoretical power generation gain, the operating status of the first component array and the second component array can be determined. The power generation data of the photovoltaic component array is used to characterize the influence of internal and external factors on the power generation capacity of the component array, and the power generation data of the component array is compared to accurately determine the operating status of the component array.

[0089] For example, the operating state of the first component array and the second component array can be determined according to the difference between the actual power generation gain and the theoretical power generation gain. The operating state of the first component array and the second component array can also be determined according to the ratio of the actual power generation gain to the theoretical power generation gain.

[0090] The severity of the problem can be determined based on the operating status, which allows staff to accurately know the inefficient component array, reducing the time for troubleshooting. Inefficient component arrays can then be maintained and adjusted in a targeted manner, improving maintenance efficiency and avoiding the impact of internal and external factors on power generation. The inefficient component array can be adjusted to maximize its operating efficiency and increase power generation, thereby maximizing the power generation benefits of the component array.

[0091] For example, if it is determined that the problem of the low-efficiency component array is excessive dust accumulation, the dust is cleared; if it is determined that the problem of the low-efficiency component array is obstruction by other objects or mutual obstruction between components, the obstruction is removed; if it is determined that the problem of the low-efficiency component array is a fault in the component array, the fault location is repaired.

[0092] In summary, in the present embodiment, identification attribute parameters of the first component array and the second component array in the preset photovoltaic power generation equipment are obtained; operating parameters of the first component array and the second component array in a unit historical time period are obtained; the operating parameters include: actual power generation, and actual state parameters; according to the identification attribute parameters and the actual power generation, the actual power generation gain of the first component array and the second component array is calculated; according to the identification attribute parameters and the actual state parameters, the theoretical power generation gain of the first component array and the second component array is calculated; according to the actual power generation gain and the theoretical power generation gain, the operating state of the first component array and the second component array is determined. Therefore, the power generation data of the component array is used to characterize the influence of internal and external factors on the power generation capacity of the component array, and the power generation data of the component array is compared to accurately determine the operating status of the component array. The severity of the problem can be determined based on the operating status, which makes it easier for staff to accurately know the inefficient component array, reducing the time for troubleshooting, and then targeted maintenance and adjustment of the inefficient component array (for example, clearing dust, removing obstructions, and repairing fault locations), thereby improving maintenance efficiency, avoiding the influence of internal and external factors on power generation, and maximizing the operating efficiency and power generation efficiency of the component array by adjusting the inefficient component array.

[0093] In the above Figure 1 Based on the corresponding embodiments, the embodiments of the present application provide a method for calculating actual power generation gain. Figure 2 A flow chart of a method for calculating actual power generation gain provided in an embodiment of the present application. Figure 2 As shown, the identification attribute parameter includes: rated power; in S103, according to the identification attribute parameter and the actual power generation, calculating the actual power generation gain of the first component array and the second component array includes:

[0094] S201. Normalize the actual power generation of the first component array according to the rated power of the first component array to obtain a first normalized power generation of the first component array.

[0095] The calculation method of the first normalized power generation is shown in the following formula (1):

[0096] (1)

[0097] in, is the first normalized power generation, is the total power generation of the first component array, is the rated power of the first component array, is the number of components in the first component array.

[0098] S202: Normalize the actual power generation of the second component array according to the rated power of the second component array to obtain a second normalized power generation of the second component array.

[0099] The calculation method of the second normalized power generation is shown in the following formula (2):

[0100] (2)

[0101] in, is the second normalized power generation, is the total power generation of the second component array, is the rated power of the second component array, is the number of components in the second component array.

[0102] S203: Calculate the actual power generation gain according to the first normalized power generation and the second normalized power generation.

[0103] The actual power generation gain is calculated as shown in the following formula (3):

[0104] (3)

[0105] in, is the actual power generation gain.

[0106] In summary, in this embodiment, the actual power generation of the first component array is normalized according to the rated power of the first component array to obtain the first normalized power generation of the first component array; the actual power generation of the second component array is normalized according to the rated power of the second component array to obtain the second normalized power generation of the second component array; the actual power generation gain is calculated according to the first normalized power generation and the second normalized power generation. Thus, the actual power generation gain is accurately obtained through normalization processing.

[0107] In the above Figure 2 On the basis of the corresponding embodiments, the embodiments of the present application provide a method for calculating theoretical power generation gain. Figure 3 A flow chart of a method for calculating theoretical power generation gain provided in an embodiment of the present application. Figure 3 As shown, the identification attribute parameters also include: maximum power temperature coefficient; the actual state parameters also include: instantaneous power and operating temperature.

[0108] In S104, according to the identification attribute parameter and the actual state parameter, the theoretical power generation gain of the first component array and the second component array is calculated, including:

[0109] S301, calculating the temperature gain of the first component array and the second component array according to the maximum power temperature coefficient, rated power, instantaneous power and operating temperature of the first component array and the second component array.

[0110] Temperature has a significant impact on photovoltaic power generation, so the temperature-related parameters are comprehensively considered to determine the impact of temperature on power generation of the first component array and the second component array.

[0111] S302: Calculate theoretical power generation gain according to the temperature gain.

[0112] For example, the temperature gain may be determined as the theoretical power generation gain; the theoretical power generation gain may also be calculated based on the temperature gain and other objectively existing gains.

[0113] In summary, in this embodiment, the temperature gain of the first component array and the second component array is calculated according to the maximum power temperature coefficient, rated power, instantaneous power and operating temperature of the first component array and the second component array; and the theoretical power generation gain is calculated according to the temperature gain. Thus, the theoretical power generation gain is obtained by comprehensively considering the temperature factor.

[0114] In the above Figure 3 Based on the corresponding embodiments, the embodiments of the present application provide a method for calculating temperature gain. Figure 4 A flow chart of a method for calculating temperature gain provided in an embodiment of the present application. Figure 4 As shown, in S301, according to the maximum power temperature coefficient, rated power, instantaneous power and operating temperature of the first component array and the second component array, the temperature gain of the first component array and the second component array is calculated, including:

[0115] S401. Calculate a first temperature loss of a first component array according to a maximum power temperature coefficient, a rated power, an instantaneous power, and an operating temperature of the first component array.

[0116] The calculation method of the first temperature loss is shown in the following formula (4):

[0117] (4)

[0118] in, is the first temperature loss, is the instantaneous power of the first component array, is the maximum power temperature coefficient of the first component array, T is the operating temperature, is the first normalized power generation.

[0119] S402: Calculate a second temperature loss of the second component array according to the maximum power temperature coefficient, rated power, instantaneous power and operating temperature of the second component array.

[0120] The second temperature loss is calculated as shown in the following formula (5):

[0121] (5)

[0122] in, is the second temperature loss, is the instantaneous power of the second component array, is the maximum power temperature coefficient of the second component array, is the second normalized power generation.

[0123] S403: Calculate a temperature gain according to the first temperature loss and the second temperature loss.

[0124] The temperature gain is calculated as shown in the following formula (6):

[0125] (6)

[0126] in, is the temperature gain.

[0127] In summary, in this embodiment, the first temperature loss of the first component array is calculated according to the maximum power temperature coefficient, rated power, instantaneous power and operating temperature of the first component array; the second temperature loss of the second component array is calculated according to the maximum power temperature coefficient, rated power, instantaneous power and operating temperature of the second component array; the temperature gain is calculated according to the first temperature loss and the second temperature loss. Thus, the temperature gain is accurately calculated.

[0128] In the above Figure 1 Based on the corresponding embodiments, the embodiments of the present application provide another method for calculating the theoretical power generation gain. Figure 5 A flow chart of another method for calculating theoretical power generation gain provided in an embodiment of the present application. Figure 5As shown, if the first component array is a first double-glass component and the second component array is a second double-glass component, the identification attribute parameter also includes: a double-sided coefficient; the actual state parameter also includes: an actual total irradiation amount and an actual back irradiation amount.

[0129] Calculating the theoretical power generation gains of the first component array and the second component array according to the identification attribute parameters and the actual state parameters in S104 also includes:

[0130] S501, calculating the bifaciality gain of the first double-glass component and the second double-glass component according to the bifaciality coefficients, the actual total radiation amount, and the actual back radiation amount of the first double-glass component and the second double-glass component.

[0131] The temperature gain is calculated as shown in the following formula (7):

[0132] (7)

[0133] in, is the bifaciality gain, is the actual total radiation exposure, is the actual back irradiation of the first double-glass module, is the bifacial coefficient of the first double-glass component, is the actual back irradiation of the second double-glass module, is the bifacial coefficient of the second double-glass component.

[0134] S502: Calculate theoretical power generation gain based on the bifaciality gain.

[0135] For example, the bifaciality gain may be determined as the theoretical power generation gain; or the theoretical power generation gain may be calculated based on the bifaciality gain and other objectively existing gains.

[0136] In summary, in this embodiment, the bifaciality gain of the first double-glass component and the second double-glass component is calculated according to the bifaciality coefficient, the actual total irradiation, and the actual back irradiation of the first double-glass component and the second double-glass component; and the theoretical power generation gain is calculated according to the bifaciality gain. Thus, the theoretical power generation gain is obtained by comprehensively considering the bifaciality.

[0137] In the above Figure 2 On the basis of the corresponding embodiments, the embodiments of the present application provide another method for calculating the theoretical power generation gain. Figure 6 A flow chart of another method for calculating theoretical power generation gain provided in an embodiment of the present application. Figure 6 As shown, if the first component array is a first double-glass component and the second component array is a second double-glass component, the actual state parameters also include: instantaneous power and back radiation.

[0138] In S104, according to the identification attribute parameter and the actual state parameter, the theoretical power generation gain of the first double-glass component and the second double-glass component is calculated, including:

[0139] S601. Calculate a first low radiation loss of the first double-glass component according to a first normalized power generation, an instantaneous power of the first double-glass component, and a back radiation amount.

[0140] The calculation method of the first low radiation loss is shown in the following formula (8):

[0141] (8)

[0142] in, is the first lowest radiation loss, is the first normalized power generation, is the actual back irradiation of the first double-glass module, is the instantaneous power of the first component array, is the rated power of the first component array, is the number of components in the first component array.

[0143] S602: Calculate the second minimum radiation loss of the second double-glass component according to the second normalized power generation, the instantaneous power of the second double-glass component, and the back radiation amount.

[0144] The calculation method of the second lowest radiation loss is shown in the following formula (9):

[0145] (9)

[0146] in, The second lowest radiation loss, is the second normalized power generation, is the actual back irradiation of the second double-glass module, is the instantaneous power of the second component array, is the rated power of the second component array, is the number of components in the second component array.

[0147] S603: Calculate the low radiation gains of the first double-glass component and the second double-glass component according to the first low radiation loss and the second low radiation loss.

[0148] The calculation method of low irradiation gain is shown in the following formula (10):

[0149] (10)

[0150] in, For low irradiance gain, is the first lowest radiation loss, It is the second lowest radiation loss.

[0151] S604: Calculate theoretical power generation gain based on the low irradiation gain.

[0152] For example, the low irradiation gain may be determined as the theoretical power generation gain; or the theoretical power generation gain may be calculated based on the low irradiation gain and other objectively existing gains.

[0153] In summary, in this embodiment, the first low radiation loss of the first double-glass component is calculated according to the first normalized power generation, the instantaneous power of the first double-glass component, and the back radiation; the second low radiation loss of the second double-glass component is calculated according to the second normalized power generation, the instantaneous power of the second double-glass component, and the back radiation; the low radiation gain of the first double-glass component and the second double-glass component is calculated according to the first low radiation loss and the second low radiation loss; the theoretical power generation gain is calculated according to the low radiation gain. Thus, the theoretical power generation gain is obtained by comprehensively considering the low radiation.

[0154] In the above Figure 2 On the basis of the corresponding embodiments, the embodiments of the present application provide another method for calculating the theoretical power generation gain. Figure 7 A flow chart of another method for calculating theoretical power generation gain provided in an embodiment of the present application. Figure 7 As shown, the identification attribute parameters also include: resistance parameters, and the actual state parameters also include: instantaneous current parameters.

[0155] In S104, according to the identification attribute parameter and the actual state parameter, the theoretical power generation gain of the first component array and the second component array is calculated, including:

[0156] S701, calculating a first line loss of a first component array according to a first normalized power generation, an instantaneous current parameter, a resistance parameter, and a rated power of a first component array.

[0157] The calculation method of the first line loss is shown in the following formula (11):

[0158] (11)

[0159] in, is the first line loss, is the instantaneous current parameter of the first component array, is the resistance parameter of the first component array, is the rated power of the first component array, is the number of components in the first component array.

[0160] S702: Calculate a second line loss of the second component array according to the second normalized power generation, the instantaneous current parameter, the resistance parameter and the rated power of the second component array.

[0161] The second line loss is calculated as shown in the following formula (12):

[0162] (12)

[0163] in, is the second line loss, is the instantaneous current parameter of the second component array, is the resistance parameter of the second component array, is the rated power of the second component array, is the number of components in the second component array.

[0164] S703: Calculate line loss gains of the first component array and the second component array according to the first line loss and the second line loss.

[0165] The calculation method of line loss gain is shown in the following formula (13):

[0166] (13)

[0167] S704: Calculate theoretical power generation gain according to the line loss gain.

[0168] For example, the line loss gain may be determined as the theoretical power generation gain; or the theoretical power generation gain may be calculated based on the line loss gain and other objectively existing gains.

[0169] In summary, in this embodiment, the first line loss of the first component array is calculated according to the first normalized power generation, the instantaneous current parameter, the resistance parameter and the rated power of the first component array; the second line loss of the second component array is calculated according to the second normalized power generation, the instantaneous current parameter, the resistance parameter and the rated power of the second component array; the line loss gain of the first component array and the second component array is calculated according to the first line loss and the second line loss; the theoretical power generation gain is calculated according to the line loss gain. Thus, the theoretical power generation gain is obtained by comprehensively considering the line loss.

[0170] In the above Figure 2 On the basis of the corresponding embodiments, the embodiments of the present application provide a method for calculating theoretical power generation gain. Figure 8 A flow chart of another method for calculating theoretical power generation gain provided in an embodiment of the present application is shown below. Figure 8 As shown, the actual state parameters also include: incident angle parameters and instantaneous power.

[0171] In S104, according to the identification attribute parameter and the actual state parameter, the theoretical power generation gain of the first component array and the second component array is calculated, including:

[0172] S801. Calculate a first incident angle correction parameter of the first component array according to the incident angle parameter of the first component array.

[0173] The calculation method of the second incident angle correction parameter is shown in the following formula (14):

[0174] (14)

[0175] in, is the first incident angle correction parameter, is the incident angle correction factor, is the incident angle of sunlight on the first component array.

[0176] Furthermore, to calculate and derive the above formula (14), the following formula must be used:

[0177] (15)

[0178] (16)

[0179] (17)

[0180] (18)

[0181] (19)

[0182] in, Component incident angle AOI, is the solar altitude angle, is the solar azimuth, is the geographical latitude, is the solar declination, is the solar zenith angle, Component inclination, Component azimuth, L is the local geographic longitude, is the geographical longitude of the standard time location in the local area, e is the time difference, n is the nth day of the year, t is the local standard time, True solar time.

[0183] S802. Calculate a second incident angle correction parameter of the second component array according to the incident angle parameter of the second component array.

[0184] The calculation method of the second incident angle correction parameter is shown in the following formula (15):

[0185] (15)

[0186] in, is the second incident angle correction parameter, is the incident angle of sunlight on the second component array.

[0187] S803, calculating the first incident angle loss of the first component array according to the first incident angle correction parameter, the first normalized power generation, the instantaneous power and the rated power of the first component array.

[0188] The calculation method of the first incident angle loss is shown in the following formula (16):

[0189] (16)

[0190] in, is the loss at the first incident angle.

[0191] S804: Calculate the second incident angle loss of the second component array according to the second incident angle correction parameter, the second normalized power generation, the instantaneous power and the rated power of the second component array.

[0192] The calculation method of the second incident angle loss is shown in the following formula (17):

[0193] (17)

[0194] in, is the loss at the second incident angle.

[0195] S805. Calculate incident angle correction gains of the first component array and the second component array according to the first incident angle loss and the second incident angle loss.

[0196] The calculation method of the incident angle correction gain is shown in the following formula (18):

[0197] (18)

[0198] in, is the gain corrected for the angle of incidence.

[0199] S806. Calculate the theoretical power generation gain according to the incident angle correction gain.

[0200] For example, the incident angle correction gain may be determined as the theoretical power generation gain; or the theoretical power generation gain may be calculated based on the incident angle correction gain and other objectively existing gains.

[0201] In summary, in this embodiment, according to the incident angle parameter of the first component array, the first incident angle correction parameter of the first component array is calculated; according to the incident angle parameter of the second component array, the second incident angle correction parameter of the second component array is calculated; according to the first incident angle correction parameter, the first normalized power generation, the instantaneous power of the first component array and the rated power, the first incident angle loss of the first component array is calculated; according to the second incident angle correction parameter, the second normalized power generation, the instantaneous power of the second component array and the rated power, the second incident angle loss of the second component array is calculated; according to the first incident angle loss and the second incident angle loss, the incident angle correction gain of the first component array and the second component array is calculated; according to the incident angle correction gain, the theoretical power generation gain is calculated. Thus, the theoretical power generation gain is obtained by comprehensively considering the incident angle correction.

[0202] On the basis of the above embodiment, in another embodiment of the present application, the theoretical power generation gain can also be calculated according to the temperature gain, bifaciality gain, low irradiation gain, line loss gain, and incident angle correction gain. The influence of factors such as temperature, bifaciality, low irradiation, line loss, and incident angle correction on the theoretical power generation gain is comprehensively considered.

[0203] The specific calculation method can be shown in the following formula (19):

[0204] (19)

[0205] in, is the theoretical power generation gain.

[0206] Based on the above embodiments, an embodiment of the present application provides a method for determining the operating status of a first component array and a second component array. Fig. 9 A flowchart of a method for determining the operating status of a first component array and a second component array provided in an embodiment of the present application. Fig. 9 As shown, in S105, the operation states of the first component array and the second component array are determined according to the actual power generation gain and the theoretical power generation gain, including:

[0207] S901. Calculate the gain difference between the actual power generation gain and the theoretical power generation gain.

[0208] The gain difference is calculated as shown in the following formula (20):

[0209] (20)

[0210] S902: If the absolute value of the gain difference is within a first preset difference interval, determine that the operation state of the first component array and the second component array is a stable operation state.

[0211] For example, the first preset difference interval can be 0≤|σ|≤0.5%. The absolute value of the gain difference is within the first preset difference interval, indicating that the gap between the actual power generation gain and the theoretical power generation gain is very small. It can be considered that the double-sided double-glass photovoltaic module operates well and does not affect the power generation efficiency of the power station.

[0212] S903: If the absolute value of the gain difference is within a second preset difference interval, determine that the operating state of the first component array and the second component array is a shielding operating state.

[0213] The minimum value of the second preset difference interval is greater than the maximum value of the first preset difference interval.

[0214] For example, the second preset difference interval may be 0.5%<|σ|≤1%. If the absolute value of the gain difference is within the second preset difference interval, it indicates that the gap between the actual power generation gain and the theoretical power generation gain is already quite obvious. It can be considered that the bifacial double-glass photovoltaic module has minor problems such as shading, and the bifacial double-glass photovoltaic module has not been maximized, which has affected the power generation efficiency of the power station. In the shading operation state, the staff can handle the shading problem.

[0215] For example, the shielding operation state may also be caused by excessive dust accumulation, which requires staff to remove the dust.

[0216] S904: If the absolute value of the gain difference is greater than the maximum value of the second preset difference interval, determine that the operation status of the first component array and the second component array is a faulty operation status.

[0217] For example, the absolute value of the gain difference is greater than the maximum value of the second preset difference interval, which can be 1%<|σ|. The absolute value of the gain difference is greater than the maximum value of the second preset difference interval, indicating that the gap between the actual power generation gain and the theoretical power generation gain is already very large, and it can be considered that the operation is poor, affecting the power generation of the power station, and the power generation unit must be rectified. In the faulty operation state, the staff can adjust the double-sided double-glass photovoltaic module, or repair the fault location to improve its operation state.

[0218] In summary, in this embodiment, the gain difference between the actual power generation gain and the theoretical power generation gain is calculated; if the absolute value of the gain difference is within the first preset difference interval, the operating state of the first component array and the second component array is determined to be a stable operating state; if the absolute value of the gain difference is within the second preset difference interval, the operating state of the first component array and the second component array is determined to be a shielded operating state; the maximum value of the first preset difference interval is greater than the maximum value of the first preset difference interval; if the absolute value of the gain difference is greater than the maximum value of the second preset difference interval, the operating state of the first component array and the second component array is determined to be a faulty operating state. Thus, the operating state of the double-glass component is accurately determined, which is convenient for the staff to adjust the double-glass component according to the operating state.

[0219] On the basis of determining the operating status of the photovoltaic module array in the above-mentioned embodiment, in addition to the double-glass module, the technical solution of the present application can also determine the operating status of the single-glass module.

[0220] The difference between double-glass modules and single-glass modules is that there is an additional back irradiation. The parameters related to back irradiation in the above embodiment are: actual back irradiation, double-sided rate gain, and back irradiation. Removing the parameters related to back irradiation, the remaining technical solutions of the embodiments of this application can also be used to determine the operating status of single-glass modules. The specific technical principles and beneficial effects are similar to those in the above embodiments and will not be repeated here.

[0221] The following is a description of a photovoltaic module array unit operating status judgment device, electronic equipment, etc. provided by the present application for execution. The specific implementation process and technical effects are described above and will not be repeated below.

[0222] Fig.10 A schematic diagram of a photovoltaic module array unit operating status judgment device provided in an embodiment of the present application, such as Fig.10 As shown, the device comprises:

[0223] The first acquisition module 1001 is used to acquire identification attribute parameters of a first component array and a second component array in a preset photovoltaic power generation device.

[0224] The second acquisition module 1002 is used to acquire the operating parameters of the first component array and the second component array in a unit historical time period; the operating parameters include: actual power generation and actual state parameters.

[0225] The first calculation module 1003 is used to calculate the actual power generation gain of the first component array and the second component array according to the identification attribute parameters and the actual power generation.

[0226] The second calculation module 1004 is used to calculate the theoretical power generation gains of the first component array and the second component array according to the identification attribute parameters and the actual state parameters.

[0227] The determination module 1005 is used to determine the operating status of the first component array and the second component array according to the actual power generation gain and the theoretical power generation gain.

[0228] Furthermore, the first calculation module 1003 is specifically used to identify the attribute parameters including: rated power; normalizing the actual power generation of the first component array according to the rated power of the first component array to obtain a first normalized power generation of the first component array; normalizing the actual power generation of the second component array according to the rated power of the second component array to obtain a second normalized power generation of the second component array; and calculating the actual power generation gain according to the first normalized power generation and the second normalized power generation.

[0229] Furthermore, the second calculation module 1004 is specifically used to identify that the attribute parameters also include: a maximum power temperature coefficient; the actual state parameters also include: instantaneous power and operating temperature; based on the identification attribute parameters and the actual state parameters, the theoretical power generation gain of the first component array and the second component array is calculated, including: based on the maximum power temperature coefficient, rated power, instantaneous power and operating temperature of the first component array and the second component array, the temperature gain of the first component array and the second component array is calculated; based on the temperature gain, the theoretical power generation gain is calculated.

[0230] Furthermore, the second calculation module 1004 is specifically used to calculate the first temperature loss of the first component array according to the maximum power temperature coefficient, rated power, instantaneous power and operating temperature of the first component array; calculate the second temperature loss of the second component array according to the maximum power temperature coefficient, rated power, instantaneous power and operating temperature of the second component array; calculate the temperature gain according to the first temperature loss and the second temperature loss.

[0231] Furthermore, the second calculation module 1004 is specifically used to identify that the attribute parameters also include: the bifacial coefficient; the actual state parameters also include: the actual total irradiation and the actual back irradiation; based on the bifacial coefficients, the actual total irradiation and the actual back irradiation of the first component array and the second component array, the bifaciality gain of the first component array and the second component array is calculated; based on the bifaciality gain, the theoretical power generation gain is calculated.

[0232] Furthermore, the second calculation module 1004 is specifically used for actual state parameters including: instantaneous power and back radiation; calculating the first low radiation loss of the first component array according to the first normalized power generation, the instantaneous power of the first component array, and the back radiation; calculating the second low radiation loss of the second component array according to the second normalized power generation, the instantaneous power of the second component array, and the back radiation; calculating the low radiation gain of the first component array and the second component array according to the first low radiation loss and the second low radiation loss; and calculating the theoretical power generation gain according to the low radiation gain.

[0233] Furthermore, the second calculation module 1004 is specifically used to identify that the attribute parameters also include: resistance parameters, and the actual state parameters also include: instantaneous current parameters; according to the first normalized power generation, the instantaneous current parameters, resistance parameters and rated power of the first component array, the first line loss of the first component array is calculated; according to the second normalized power generation, the instantaneous current parameters, resistance parameters and rated power of the second component array, the second line loss of the second component array is calculated; according to the first line loss and the second line loss, the line loss gain of the first component array and the second component array is calculated; according to the line loss gain, the theoretical power generation gain is calculated.

[0234] Furthermore, the second calculation module 1004, which is specifically used for actual state parameters, also includes: incident angle parameters and instantaneous power; calculating the first incident angle correction parameter of the first component array according to the incident angle parameter of the first component array; calculating the second incident angle correction parameter of the second component array according to the incident angle parameter of the second component array; calculating the first incident angle loss of the first component array according to the first incident angle correction parameter, the first normalized power generation, the instantaneous power of the first component array and the rated power; calculating the second incident angle loss of the second component array according to the second incident angle correction parameter, the second normalized power generation, the instantaneous power of the second component array and the rated power; calculating the incident angle correction gain of the first component array and the second component array according to the first incident angle loss and the second incident angle loss; calculating the theoretical power generation gain according to the incident angle correction gain.

[0235] Further, the determination module 1005 is specifically used to calculate the gain difference between the actual power generation gain and the theoretical power generation gain; if the absolute value of the gain difference is within the first preset difference interval, the operating state of the first component array and the second component array is determined to be a stable operating state; if the absolute value of the gain difference is within the second preset difference interval, the operating state of the first component array and the second component array is determined to be a shielded operating state; the maximum value of the first preset difference interval is greater than the maximum value of the first preset difference interval; if the absolute value of the gain difference is greater than the maximum value of the second preset difference interval, the operating state of the first component array and the second component array is determined to be a faulty operating state.

[0236] Fig.11 A schematic diagram of an electronic device provided in an embodiment of the present application, which electronic device may be a device with computing and processing functions.

[0237] The electronic device includes: a processor 1101 and a storage medium 1102. The processor 1101 and the storage medium 1102 are connected via a bus.

[0238] The storage medium 1102 is used to store programs, and the processor 1101 calls the programs stored in the storage medium 1102 to execute the above method embodiment. The specific implementation method and technical effect are similar and will not be repeated here.

[0239] Optionally, the present invention also provides a storage medium, including a program, which is used to execute the above-mentioned method embodiment when executed by a processor. In the several embodiments provided by the present invention, it should be understood that the disclosed device and method can be implemented in other ways. For example, the embodiments described above are merely schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0240] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0241] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of hardware plus software functional units.

[0242] The above-mentioned integrated unit implemented in the form of a software functional unit can be stored in a storage medium. The above-mentioned software functional unit is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor (English: processor) to perform some steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (English: Read-Only Memory, abbreviated: ROM), random access memory (English: Random Access Memory, abbreviated: RAM), disk or optical disk and other media that can store program codes.

Claims

1. A method for determining the operating status of a photovoltaic module array unit, characterized in that: The method comprises: Obtain identification attribute parameters of a first component array and a second component array in a preset photovoltaic power generation device; wherein the first component array is a first double-glass component, and the second component array is a second double-glass component, and the identification attribute parameters include: rated power and bifacial coefficient; Acquire the operating parameters of the first component array and the second component array in a unit historical time period; the operating parameters include: actual power generation and actual state parameters; the actual state parameters include: actual total irradiation, actual back irradiation, and instantaneous power; Calculating actual power generation gains of the first component array and the second component array according to the identification attribute parameter and the actual power generation; Calculating theoretical power generation gains of the first component array and the second component array according to the identification attribute parameter and the actual state parameter; According to the actual power generation gain and the theoretical power generation gain, the operating states of the first component array and the second component array are determined; wherein, The step of calculating the actual power generation gains of the first component array and the second component array according to the identification attribute parameters and the actual power generation comprises: Normalizing the actual power generation of the first component array according to the rated power of the first component array to obtain a first normalized power generation of the first component array; Normalizing the actual power generation of the second component array according to the rated power of the second component array to obtain a second normalized power generation of the second component array; Calculating the actual power generation gain according to the first normalized power generation and the second normalized power generation; The step of calculating the theoretical power generation gains of the first component array and the second component array according to the identification attribute parameter and the actual state parameter comprises: Calculating bifaciality gains of the first double-glass component and the second double-glass component according to the bifaciality coefficients, actual total radiation exposure, and actual back radiation exposure of the first double-glass component and the second double-glass component; The temperature gain of the first double-glass component and the second double-glass component is calculated as shown in the following formula: in, is the bifaciality gain, is the actual total radiation exposure, is the actual back irradiation of the first double-glass component, is the bifacial coefficient of the first double-glass component, is the actual back irradiation of the second double-glass component, is the bifacial coefficient of the second double-glass component; Calculating a first low radiation loss of the first double-glass component according to the first normalized power generation, the instantaneous power of the first double-glass component, and the actual back radiation amount; The calculation method of the first low radiation loss of the first double-glass component is as shown in the following formula: in, For the first low irradiation loss, is the first normalized power generation, is the actual back irradiation of the first double-glass component, is the instantaneous power of the first component array, is the rated power of the first component array, is the number of components in the first component array; Calculating the second minimum radiation loss of the second double-glass component according to the second normalized power generation, the instantaneous power of the second double-glass component, and the actual back radiation amount; The second lowest radiation loss of the second double-glass component is calculated as shown in the following formula: in, For the second lowest radiation loss, is the second normalized power generation, is the actual back irradiation of the second double-glass component, is the instantaneous power of the second component array, is the rated power of the second component array, is the number of components in the second component array; Calculating low radiation gains of the first double-glass component and the second double-glass component according to the first low radiation loss and the second low radiation loss; The theoretical power generation gain is calculated according to the bifaciality gain and the low irradiation gain.

2. The method according to claim 1, characterized in that The identification attribute parameters also include: maximum power temperature coefficient; the actual state parameters also include: instantaneous power and operating temperature; The calculating the theoretical power generation gains of the first component array and the second component array according to the identification attribute parameter and the actual state parameter includes: Calculating the temperature gain of the first component array and the second component array according to the maximum power temperature coefficient, the rated power, the instantaneous power and the operating temperature of the first component array and the second component array; The theoretical power generation gain is calculated according to the temperature gain.

3. The method according to claim 2, characterized in that The step of calculating the temperature gains of the first component array and the second component array according to the maximum power temperature coefficient, the rated power, the instantaneous power and the operating temperature of the first component array and the second component array comprises: Calculating a first temperature loss of the first component array according to a maximum power temperature coefficient, a rated power, an instantaneous power, and an operating temperature of the first component array; calculating a second temperature loss of the second component array according to a maximum power temperature coefficient, a rated power, an instantaneous power, and an operating temperature of the second component array; The temperature gain is calculated according to the first temperature loss and the second temperature loss.

4. The method according to claim 1, characterized in that: The identification attribute parameters also include: resistance parameters, and the actual state parameters also include: instantaneous current parameters; The calculating the theoretical power generation gains of the first component array and the second component array according to the identification attribute parameter and the actual state parameter includes: Calculating a first line loss of the first component array according to the first normalized power generation, an instantaneous current parameter, a resistance parameter, and a rated power of the first component array; Calculating a second line loss of the second component array according to the second normalized power generation, an instantaneous current parameter, a resistance parameter, and a rated power of the second component array; Calculating line loss gains of the first component array and the second component array according to the first line loss and the second line loss; The theoretical power generation gain is calculated according to the line loss gain.

5. The method according to claim 1, characterized in that The actual state parameters also include: incident angle parameters and instantaneous power; The calculating the theoretical power generation gains of the first component array and the second component array according to the identification attribute parameter and the actual state parameter includes: Calculating a first incident angle correction parameter of the first component array according to the incident angle parameter of the first component array; Calculating a second incident angle correction parameter of the second component array according to the incident angle parameter of the second component array; Calculating a first incident angle loss of the first component array according to the first incident angle correction parameter, the first normalized power generation, the instantaneous power and the rated power of the first component array; Calculating a second incident angle loss of the second component array according to the second incident angle correction parameter, the second normalized power generation, the instantaneous power and the rated power of the second component array; Calculating incident angle correction gains of the first component array and the second component array according to the first incident angle loss and the second incident angle loss; The theoretical power generation gain is calculated according to the incident angle correction gain.

6. The method according to any one of claims 1 to 5, characterized in that: The determining the operating states of the first component array and the second component array according to the actual power generation gain and the theoretical power generation gain includes: Calculating a gain difference between the actual power generation gain and the theoretical power generation gain; If the absolute value of the gain difference is within a first preset difference interval, determining that the operation state of the first component array and the second component array is a stable operation state; If the absolute value of the gain difference is within a second preset difference interval, it is determined that the operating state of the first component array and the second component array is a shielding operating state; and the minimum value of the second preset difference interval is greater than the maximum value of the first preset difference interval; If the absolute value of the gain difference is greater than the maximum value of the second preset difference interval, it is determined that the operating state of the first component array and the second component array is a faulty operating state.

7. An electronic device, used for judging the operating status of a photovoltaic module array unit, characterized in that: include: A processor and a storage medium, wherein the processor and the storage medium are connected to each other through a bus communication, the storage medium stores executable program instructions of the method for determining the operating status of a photovoltaic component array unit as described in any one of claims 1 to 6, and identification attribute parameters and operating parameters in a photovoltaic power generation device, and the processor calls the program, identification attribute parameters and operating parameters stored in the storage medium to execute the steps of the method for determining the operating status of a photovoltaic component array unit.

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