Running state monitoring system of solar photovoltaic power station

Abstract

The invention discloses an operation state monitoring system of a solar photovoltaic power station. The operation state monitoring system comprises a photovoltaic power station operation monitoring platform, a photovoltaic resource acquisition module, a photovoltaic equipment operation tracking module, a photovoltaic power generation evaluation module, an area positioning tracking troubleshooting module and an early warning module. In the operation process of the photovoltaic power station, multi-aspect comprehensive monitoring analysis is performed on the output power generation value by combining the operation data of photovoltaic equipment and the environment data of the power station, and the operation performance of the photovoltaic power generation panel is evaluated and judged by comparing the actual output electric energy of the photovoltaic power generation panel with the output power generation value of the photovoltaic power generation panel. The monitoring area where the photovoltaic power generation panel judged to be in the low-efficiency operation state is located is divided into an operation low-efficiency area, then the photovoltaic power generation panel in the operation low-efficiency area is singly positioned, and the operation performance of the photovoltaic power generation panel is judged, so that the detection range of the photovoltaic module is gradually reduced from wide to small, the unqualified photovoltaic module is easy to find out, and the detection efficiency of the photovoltaic module is improved. And the stability of photovoltaic power generation is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic power stations, and more specifically, to an operation status monitoring system of a solar photovoltaic power station. Background Art

[0002] With the development of technology and demand, solar photovoltaic power generation will gradually replace some conventional energy and will become the main body of the world's energy supply. At this point, the demand for intelligent operation and maintenance systems for photovoltaic power stations will become increasingly higher.

[0003] The operating mode of a photovoltaic power station is that under the condition of solar radiation, the solar photovoltaic cell array of the photovoltaic power generation system converts the output electricity from solar energy, which is then sent to the DC distribution cabinet through the DC combiner box and then converted into AC power by the grid-connected inverter to supply the building's own load. The power generation efficiency of a photovoltaic power station mainly depends on the power generation efficiency of the photovoltaic panels in the natural environment.

[0004] The traditional solar photovoltaic power station operation monitoring system only monitors the output power of the power station and the meteorological environment of the power station. It is unable to monitor the operating status and power generation efficiency of the photovoltaic panels themselves. It is difficult to judge the real-time operating status of the photovoltaic components based on the actual output results of electric energy, resulting in the inability to eliminate unqualified components in many photovoltaic panels, which in turn leads to reduced stability and low efficiency of photovoltaic power generation.

[0005] To this end, we propose an operation status monitoring system for solar photovoltaic power stations based on existing practical problems. Summary of the invention

[0006] The purpose of the present invention is to solve the problem that the operating status and power generation efficiency of photovoltaic panels themselves are rarely monitored, and it is difficult to judge the real-time operating status of photovoltaic components based on the actual output results of electric energy, resulting in the inability to eliminate unqualified components among many photovoltaic panels. Compared with the existing technology, an operating status monitoring system for a solar photovoltaic power station is provided.

[0007] The object of the present invention can be achieved by the following technical solutions: A solar photovoltaic power station operation status monitoring system, including a photovoltaic power station operation monitoring platform, a photovoltaic resource acquisition module, a photovoltaic equipment operation tracking module, a photovoltaic power generation evaluation module, a regional positioning tracking and troubleshooting module and an early warning module;

[0008] The photovoltaic power station operation monitoring platform divides the total laying range of photovoltaic panels of the solar photovoltaic power station into I monitoring areas, sets the monitoring cycle to T days, and sets t monitoring periods within a single day;

[0009] The photovoltaic resource acquisition module is used to obtain the environmental data of the photovoltaic power station during the monitoring period, generate the light source forward conversion mean value through the environmental data, and send it to the photovoltaic power generation evaluation module;

[0010] The photovoltaic equipment operation tracking module is used to obtain the operation data of the photovoltaic power generation panel, which includes the temperature value of the photovoltaic power generation panel, the voltage output value of the photovoltaic power generation panel, and the actual output power of the photovoltaic power generation panel. The photovoltaic power generation panel temperature value and the photovoltaic power generation panel voltage output value are calculated and processed to obtain the reverse impact value of the photovoltaic power generation panel, and the reverse impact value and the actual output power of the photovoltaic power generation panel are sent to the photovoltaic power generation evaluation module;

[0011] After receiving the forward conversion mean value of the light source and the reverse impact value of the photovoltaic panel, the photovoltaic power generation evaluation module comprehensively calculates and generates the output power generation value of the photovoltaic panel, compares the actual output power of the photovoltaic panel with the output power generation value of the photovoltaic panel, and evaluates and determines the operating performance of the photovoltaic panel. According to the evaluation results, an operating high-efficiency signal and an operating low-efficiency signal are generated, and the monitoring area that generates the operating low-efficiency signal is marked as an operating low-efficiency area, and the operating low-efficiency area number is sent to the regional positioning tracking and troubleshooting module;

[0012] The regional positioning tracking and troubleshooting module is used to locate multiple photovoltaic panels in the inefficient operation area and judge the operating performance of a single photovoltaic panel, and send the judgment result to the early warning module.

[0013] As a preferred embodiment of the present invention, the process of obtaining the forward conversion mean of the light source includes: collecting environmental data of a single day within the monitoring period, which includes the mean ambient temperature, the mean light intensity and the total sunshine time, marking the mean ambient temperature, the mean light intensity and the total sunshine time as HW, GQ and GT respectively, and calculating the forward conversion mean GZX of the light source by the formula, GZX=[(α+1)HW+(β+1)GQ]×GT, wherein α and β represent the forward proportional coefficients of the mean ambient temperature and the mean light intensity respectively, 0﹤α﹤β.

[0014] As a preferred embodiment of the present invention, the process of performing data calculation and processing on the temperature value and voltage output value of the photovoltaic power generation panel includes: obtaining the temperature value Wt of the photovoltaic power generation panel within a single day within the monitoring period, summing and averaging the temperature values ​​of multiple photovoltaic power generation panels during the monitoring period, and obtaining the average temperature value of the photovoltaic power generation panel, which is marked as WJ;

[0015] Obtain the voltage output value Vt of the photovoltaic power generation panel within a single day within the monitoring period, calculate the difference between the voltage output values ​​of the photovoltaic power generation panel in the two previous and next monitoring periods, and obtain the voltage output fluctuation value, compare the voltage output fluctuation value with the preset voltage output fluctuation threshold, and mark the sum of all voltage output fluctuation values ​​greater than the preset voltage output fluctuation threshold as the voltage output abnormal fluctuation value, marked as VB;

[0016] The reverse impact value BNX of the photovoltaic panel is calculated according to the average temperature of the photovoltaic panel and the abnormal voltage output fluctuation value, BNX=(a1+1)WJ+(a2+1)VB, a1﹥a2﹥0, a1 and a2 are the proportional coefficients of the average temperature WJ of the photovoltaic panel and the abnormal voltage output fluctuation value VB respectively.

[0017] As a preferred embodiment of the present invention, the process of evaluating and judging the operating performance of the photovoltaic power generation panel within the monitoring period includes: obtaining the forward conversion mean value GZX of the light source and the reverse impact value BNX of the photovoltaic power generation panel, performing formula calculation, and obtaining the output power generation value FDL of the photovoltaic power generation panel, γ is the error correction factor, and the total output power value of the photovoltaic panels is obtained by summing up the output power values ​​of all photovoltaic panels within the monitoring period.

[0018] As a preferred embodiment of the present invention, the ratio between the actual output electric energy of the photovoltaic panel and the total output power of the photovoltaic panel is marked as the photovoltaic panel conversion rate, and the photovoltaic panel conversion rate is compared with a preset photovoltaic panel conversion rate threshold. When the photovoltaic panel conversion rate is greater than or equal to the preset photovoltaic panel conversion rate threshold, it is determined that the photovoltaic panels in the monitoring area are in an efficient operation state, and an efficient operation signal is generated. When the photovoltaic panel conversion rate is less than the preset photovoltaic panel conversion rate threshold, it is determined that the photovoltaic panels in the monitoring area are in an inefficient operation state, and an inefficient operation signal is generated.

[0019] As a preferred embodiment of the present invention, the process of judging the operating performance of a single photovoltaic panel in an operating inefficient area includes: obtaining the forward conversion mean values ​​of multiple light sources of a single photovoltaic panel within T days and the output power generation value of the photovoltaic panel, organizing the forward conversion mean values ​​of the light sources into a set A from small to large, taking the values ​​in set A as the x-axis and the output power generation value of the photovoltaic panel corresponding to the forward conversion mean value of the light source as the Y-axis to establish a rectangular coordinate system, and drawing a curve of the change of the output power generation value of the photovoltaic panel at multiple collection points on the rectangular coordinate system by drawing points.

[0020] As a preferred embodiment of the present invention, when the output power generation value change curve of the photovoltaic power generation panel shows a positive growth trend, it is judged that the operating performance of the photovoltaic power generation panel meets the standards and is marked as a qualified photovoltaic module. When the output power generation value change curve of the photovoltaic power generation panel does not show a positive growth trend, it is judged that the operating performance of the photovoltaic power generation panel does not meet the standards and is marked as an unqualified photovoltaic module, and a warning signal is generated.

[0021] Compared with the prior art, the advantages of the present invention are:

[0022] (1) This scheme is to conduct a comprehensive monitoring and analysis of the output power generation value in combination with the operating data of the photovoltaic equipment and the environmental data of the power station during the operation of the solar photovoltaic power station. The actual output power of the photovoltaic panels is compared with the output power generation value of the photovoltaic panels to evaluate and determine the operating performance of the photovoltaic panels. The monitoring area where the photovoltaic panels that are determined to be in an inefficient operating state are located is divided into an inefficient operating area. Then, multiple photovoltaic panels in the inefficient operating area are located in a single location and the operating performance of each photovoltaic panel is judged one by one, thereby realizing the real-time operating status of the photovoltaic components based on the actual output results of the power generation, gradually narrowing the monitoring range of the photovoltaic components from wide to small, making it easy to find unqualified photovoltaic components and improving the stability of photovoltaic power generation.

[0023] (2) After determining the inefficient operation area, this scheme uses the regional positioning tracking and troubleshooting module to perform a single positioning of multiple photovoltaic panels in the inefficient operation area, and obtains the forward conversion mean values ​​of multiple light sources and the output power generation value of the photovoltaic panel of a single photovoltaic panel during the monitoring period. The forward conversion mean values ​​of the light sources are grouped into a set A from small to large. The values ​​in set A are taken as the x-axis, and the photovoltaic panel output power generation value of the corresponding light source forward conversion mean value is taken as the Y-axis to establish a rectangular coordinate system. The output power generation value change curve of the photovoltaic panel at multiple collection points is drawn on the rectangular coordinate system by plotting points, and the performance of the photovoltaic panel is judged according to the growth method of the output power generation value change curve of the photovoltaic panel;

[0024] When the output power generation value change curve of the photovoltaic power generation panel shows a positive growth trend, it is judged that the operating performance of the photovoltaic power generation panel meets the standards and is marked as a qualified photovoltaic module. Otherwise, it is marked as an unqualified photovoltaic module. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a system block diagram of Embodiment 1 of the present invention;

[0026] Figure 2 This is a system block diagram of Embodiment 2 of the present invention. DETAILED DESCRIPTION

[0027] The following will combine the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all the embodiments. All other embodiments obtained by ordinary technicians in this field without creative work based on the embodiments of the present invention belong to the scope of protection of the present invention.

[0028] Example 1: The present invention discloses an operation status monitoring system for a solar photovoltaic power station. Figure 1 , including a photovoltaic power station operation monitoring platform and a photovoltaic resource acquisition module, a photovoltaic equipment operation tracking module, a photovoltaic power generation evaluation module, a regional positioning tracking and investigation module and an early warning module that are communicated with the photovoltaic power station operation monitoring platform. The photovoltaic power station operation monitoring platform divides the total laying range of photovoltaic panels of the solar photovoltaic power station into I monitoring areas, sets a monitoring cycle of T days, and sets t monitoring periods within a single day, where I, T, and t are all positive integers greater than 1.

[0029] The photovoltaic resource acquisition module is used to obtain the environmental data of the photovoltaic power station during the monitoring period. The environmental data include the average ambient temperature, the average light intensity and the total sunshine time. The average ambient temperature, the average light intensity and the total sunshine time are marked as HW, GQ and GT respectively. The forward conversion mean value GZX of the light source is calculated by the formula: GZX = [(α+1)HW+(β+1)GQ]×GT, where α and β represent the positive proportional coefficients of the average ambient temperature and the average light intensity respectively, 0﹤α﹤β. The forward conversion mean value GZX of the light source is sent to the photovoltaic power generation evaluation module. Temperature, light intensity and sunshine time are all positive factors affecting the output value of the photovoltaic panel power conversion.

[0030] The photovoltaic equipment operation tracking module is used to obtain the operation data of the photovoltaic power generation panel, which includes the temperature value of the photovoltaic power generation panel, the voltage output value of the photovoltaic power generation panel, and the actual output power of the photovoltaic power generation panel;

[0031] The temperature value and the voltage output value of the photovoltaic panel are calculated and processed to obtain the reverse impact value of the photovoltaic panel. The process includes: obtaining the temperature value Wt of the photovoltaic panel within a single day in the monitoring period, summing and averaging the temperature values ​​of multiple photovoltaic panels in the monitoring period, and obtaining the average temperature of the photovoltaic panel, which is marked as WJ;

[0032] Obtain the voltage output value Vt of the photovoltaic power generation panel on a single day within the monitoring period, calculate the difference between the voltage output values ​​of the photovoltaic power generation panel in the two previous monitoring periods, and obtain the voltage output fluctuation value, compare the voltage output fluctuation value with the preset voltage output fluctuation threshold, and mark the sum of all the voltage output fluctuation values ​​greater than the preset voltage output fluctuation threshold as the voltage output abnormal fluctuation value, marked as VB;

[0033] The reverse impact value BNX of the photovoltaic panel is calculated based on the average temperature value of the photovoltaic panel and the abnormal voltage output fluctuation value, BNX=(a1+1)WJ+(a2+1)VB, a1﹥a2﹥0, a1 and a2 are the proportional coefficients of the average temperature value WJ of the photovoltaic panel and the abnormal voltage output fluctuation value VB, respectively. The average temperature value of the photovoltaic panel and the abnormal voltage output fluctuation value are both reverse influencing factors of the output value of the photovoltaic panel power generation conversion;

[0034] The photovoltaic equipment operation tracking module sends the photovoltaic panel reverse impact value BNX and the actual output power of the photovoltaic panel to the photovoltaic power generation evaluation module.

[0035] After receiving the forward conversion mean value GZX of the light source and the reverse impact value BNX of the photovoltaic panel, the photovoltaic power generation evaluation module performs a formula calculation to obtain the output power generation value FDL of the photovoltaic panel. γ is the error correction factor. The total output power value of the photovoltaic panels is obtained by summing up the output power values ​​of all photovoltaic panels in the monitoring period. The larger the forward conversion mean value GZX of the light source is, the higher the output power value FDL of the photovoltaic panels is. The larger the reverse impact value BNX of the photovoltaic panels is, the smaller the output power value FDL of the photovoltaic panels is. This means that under good light intensity, abnormal temperature rise or voltage fluctuation of the photovoltaic panels will affect the output power value of the photovoltaic panels.

[0036] The ratio between the actual output power of the photovoltaic power generation panel and the total output power of the photovoltaic power generation panel is marked as the photovoltaic power generation panel conversion rate, and the photovoltaic power generation panel conversion rate is compared with the preset photovoltaic power generation panel conversion rate threshold. When the photovoltaic power generation panel conversion rate is greater than or equal to the preset photovoltaic power generation panel conversion rate threshold, it is determined that the photovoltaic power generation panel in the monitoring area is in a high-efficiency operation state, and an operation high-efficiency signal is generated;

[0037] When the conversion rate of the photovoltaic panel is less than the preset photovoltaic panel conversion rate threshold, the photovoltaic panel in the monitoring area is determined to be in an inefficient operating state, and an inefficient operation signal is generated. The actual output power of the photovoltaic panel is compared with the output power value of the photovoltaic panel to evaluate and determine the operating performance of the photovoltaic panel. The monitoring area where the photovoltaic panel determined to be in an inefficient operating state is located is divided into an inefficient operating area, and the inefficient operating area number is sent to the regional positioning tracking and troubleshooting module to narrow the scope of subsequent positioning and troubleshooting;

[0038] Embodiment 2: Based on Embodiment 1, this embodiment uses a regional positioning tracking and troubleshooting module to monitor the operating status of multiple photovoltaic panels in the low-efficiency operating area one by one;

[0039] See also Figure 2 The regional positioning tracking and troubleshooting module is used to locate multiple photovoltaic panels in the inefficient operation area and judge the operation performance of a single photovoltaic panel, as follows:

[0040] Get the forward conversion mean values ​​of multiple light sources and the output power generation value of the photovoltaic panel of a single photovoltaic panel within T days, organize the forward conversion mean values ​​of the light sources into a set A from small to large, take the values ​​in set A as the x-axis, and establish a rectangular coordinate system with the output power generation value of the photovoltaic panel of the corresponding forward conversion mean value of the light source as the Y-axis, and draw the output power generation value change curve of the photovoltaic panel at multiple collection points on the rectangular coordinate system by plotting points.

[0041] When the output power generation value curve of the photovoltaic power generation panel shows a positive growth trend, it is judged that the operation performance of the photovoltaic power generation panel meets the standard and is marked as a qualified photovoltaic module, which means that the larger the mean value of the forward conversion of the light source is, the more the output power generation value of the photovoltaic power generation panel shows a gradual upward growth trend, and the impact of the reverse impact value BNX of the photovoltaic power generation panel on the growth of the output power generation value of the photovoltaic power generation panel is far less than the impact of the mean value of the forward conversion of the light source on the growth of the output power generation value of the photovoltaic power generation panel;

[0042] When the output power generation value change curve of the photovoltaic power generation panel does not show a positive growth trend, it is judged that the operation performance of the photovoltaic power generation panel does not meet the standard and is marked as an unqualified photovoltaic module;

[0043] That is to say, the larger the mean value of the forward conversion of the light source is, the output power generation value of the photovoltaic panel does not show a gradually increasing trend. When the mean value of the forward conversion of the light source is larger, the output power generation value of the photovoltaic panel is smaller. The reverse impact value BNX of the photovoltaic panel has a much greater impact on the growth of the output power generation value of the photovoltaic panel than the mean value of the forward conversion of the light source. This shows that the average temperature of the photovoltaic panel or the abnormal fluctuation value of the voltage output of the photovoltaic panel is abnormal. The larger the mean value of the forward conversion of the light source is, the larger the average temperature of the photovoltaic panel is. The heat dissipation performance of the photovoltaic panel is poor. The abnormal fluctuation value of the voltage output is one of the restricting factors affecting the output power generation value of the photovoltaic panel. When the heat dissipation performance of the photovoltaic panel is poor and it is continuously in a high temperature state, it is easy to cause fluctuations in the working voltage of the photovoltaic panel.

[0044] When it is determined that the operating performance of the photovoltaic panel does not meet the standards, a warning signal is generated and sent to the warning module. The warning module sends it to the management terminal in the form of a text alert. When the management personnel receive the corresponding warning, they will promptly inspect and repair the marked solar photovoltaic components to ensure the subsequent safe, stable and efficient operation of the solar photovoltaic components and increase their service life.

[0045] The above formulas are all dimensionless and numerical calculations. The formula is a formula for the most recent real situation obtained by collecting a large amount of data and performing software simulation. The preset parameters in the formula are set by technicians in this field according to actual conditions.

[0046] The above is only a preferred specific implementation manner of the present invention; but the protection scope of the present invention is not limited thereto; any technician familiar with the technical field within the technical scope disclosed by the present invention; any equivalent replacement or change based on the technical solution and improved concept of the present invention shall be covered by the protection scope of the present invention.

Claims

1. An operation status monitoring system for a solar photovoltaic power station, characterized in that: It includes photovoltaic power station operation monitoring platform, photovoltaic resource collection module, photovoltaic equipment operation tracking module, photovoltaic power generation evaluation module, regional positioning tracking and investigation module and early warning module; The photovoltaic power station operation monitoring platform divides the total laying range of photovoltaic panels of the solar photovoltaic power station into I monitoring areas, sets the monitoring cycle to T days, and sets t monitoring periods within a single day; The photovoltaic resource acquisition module is used to obtain the environmental data of the photovoltaic power station during the monitoring period, generate the light source forward conversion mean value through the environmental data, and send it to the photovoltaic power generation evaluation module; The photovoltaic equipment operation tracking module is used to obtain the operation data of the photovoltaic power generation panel, which includes the temperature value of the photovoltaic power generation panel, the voltage output value of the photovoltaic power generation panel, and the actual output power of the photovoltaic power generation panel. The photovoltaic power generation panel temperature value and the photovoltaic power generation panel voltage output value are calculated and processed to obtain the reverse impact value of the photovoltaic power generation panel, and the reverse impact value and the actual output power of the photovoltaic power generation panel are sent to the photovoltaic power generation evaluation module; After receiving the forward conversion mean value of the light source and the reverse impact value of the photovoltaic panel, the photovoltaic power generation evaluation module comprehensively calculates and generates the output power generation value of the photovoltaic panel, compares the actual output power of the photovoltaic panel with the output power generation value of the photovoltaic panel, and evaluates and determines the operating performance of the photovoltaic panel. According to the evaluation results, an operating high-efficiency signal and an operating low-efficiency signal are generated, and the monitoring area that generates the operating low-efficiency signal is marked as an operating low-efficiency area, and the operating low-efficiency area number is sent to the regional positioning tracking and troubleshooting module; The regional positioning tracking and troubleshooting module is used to locate multiple photovoltaic panels in the inefficient operation area and judge the operating performance of a single photovoltaic panel, and send the judgment result to the early warning module.

2. The operating status monitoring system of a solar photovoltaic power station according to claim 1, characterized in that: The process of obtaining the forward conversion mean of the light source includes: collecting the environmental data of a single day within the monitoring period, which includes the mean ambient temperature, the mean light intensity and the total sunshine time, marking the mean ambient temperature, the mean light intensity and the total sunshine time as HW, GQ and GT respectively, and obtaining the forward conversion mean GZX of the light source by calculating through the formula.

3. The operating status monitoring system of a solar photovoltaic power station according to claim 2, characterized in that: The process of calculating and processing the temperature value and voltage output value of the photovoltaic power generation panel includes: obtaining the temperature value Wt of the photovoltaic power generation panel within a single day in the monitoring period, summing and averaging the temperature values ​​of multiple photovoltaic power generation panels in the monitoring period, and obtaining the average temperature value of the photovoltaic power generation panel, which is marked as WJ; Obtain the voltage output value Vt of the photovoltaic power generation panel within a single day within the monitoring period, calculate the difference between the voltage output values ​​of the photovoltaic power generation panel in the two previous and next monitoring periods, and obtain the voltage output fluctuation value, compare the voltage output fluctuation value with the preset voltage output fluctuation threshold, and mark the sum of all voltage output fluctuation values ​​greater than the preset voltage output fluctuation threshold as the voltage output abnormal fluctuation value, marked as VB; The reverse impact value BNX of the photovoltaic panel is calculated based on the average temperature of the photovoltaic panel and the abnormal voltage output fluctuation value.

4. The operating status monitoring system of a solar photovoltaic power station according to claim 3, characterized in that: The process of evaluating and judging the operating performance of the photovoltaic panel during the monitoring period includes: obtaining the forward conversion mean value GZX of the light source and the reverse impact value BNX of the photovoltaic panel, performing formula calculations, and obtaining the output power generation value FDL of the photovoltaic panel.

5. The operating status monitoring system of a solar photovoltaic power station according to claim 4, characterized in that: The ratio between the actual output electric energy of the photovoltaic panel and the total output power of the photovoltaic panel is marked as the photovoltaic panel conversion rate, and the photovoltaic panel conversion rate is compared with the preset photovoltaic panel conversion rate threshold. When the photovoltaic panel conversion rate is greater than or equal to the preset photovoltaic panel conversion rate threshold, the photovoltaic panels in the monitoring area are determined to be in an efficient operation state, and an efficient operation signal is generated. When the photovoltaic panel conversion rate is less than the preset photovoltaic panel conversion rate threshold, the photovoltaic panels in the monitoring area are determined to be in an inefficient operation state, and an inefficient operation signal is generated.

6. The operating status monitoring system of a solar photovoltaic power station according to claim 4, characterized in that: The process of judging the operating performance of a single photovoltaic panel in an operating inefficient area includes: obtaining the average forward conversion values ​​of multiple light sources and the output power generation value of the photovoltaic panel of a single photovoltaic panel within T days, organizing the forward conversion values ​​of the light sources into a set A from small to large, establishing a rectangular coordinate system with the values ​​in the set A as the x-axis and the output power generation value of the photovoltaic panel of the corresponding light source forward conversion average as the Y-axis, drawing a curve of the output power generation value of the photovoltaic panel at multiple collection points on the rectangular coordinate system by tracing points, and judging the photovoltaic panel according to the growth method of the output power generation value change curve of the photovoltaic panel.

7. The operating status monitoring system of a solar photovoltaic power station according to claim 5, characterized in that: When the output power generation value change curve of the photovoltaic panel shows a positive growth trend, it is judged that the operating performance of the photovoltaic panel meets the standards and is marked as a qualified photovoltaic module. When the output power generation value change curve of the photovoltaic panel does not show a positive growth trend, it is judged that the operating performance of the photovoltaic panel does not meet the standards and is marked as an unqualified photovoltaic module, and a warning signal is generated.

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