Photovoltaic power generation panel performance evaluation method and system

Abstract

The invention discloses a photovoltaic power generation panel performance evaluation method and system, and the method comprises the steps: obtaining the performance detection data of a photovoltaic power generation panel in all aspects, screening the performance detection data, and determining the prominent performance detection data in the performance detection data; analyzing the prominent performance detection data, and determining candidate performance parameters highly related to the performance of the photovoltaic power generation panel; evaluating the candidate performance parameters to obtain evaluation values of the candidate performance parameters, and determining key index parameters influencing the performance of the photovoltaic power generation panel according to the evaluation values; and performing evaluation calculation on the performance of the photovoltaic power generation panel based on the key index parameters influencing the performance of the photovoltaic power generation panel to obtain a performance evaluation value of the photovoltaic power generation panel. According to the method, performance data of various aspects of the photovoltaic power generation panel are screened and analyzed, performance parameters are determined, and comprehensive evaluation of the performance of the photovoltaic power generation panel can be realized, so that the working state of the photovoltaic power generation panel is better known, and a scientific basis is provided for design and optimization of the photovoltaic power generation panel.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic power generation, and in particular to a method and system for evaluating the performance of a photovoltaic power generation panel. Background Art

[0002] A photovoltaic panel is a device used to convert solar energy into electrical energy. It is also called a photovoltaic panel. They are usually composed of many solar cells that can directly convert light energy into electrical energy. The performance evaluation of photovoltaic panels is an important process to evaluate whether they can efficiently convert solar energy into electrical energy. The performance evaluation of photovoltaic panels is crucial to ensure the long-term reliability and economy of solar power generation systems. Efficient panels can improve the overall efficiency of solar power generation systems, reduce energy losses, and play a greater role in various applications, including residential, commercial and industrial uses. Therefore, accurate evaluation of the performance of photovoltaic panels is of great significance to promoting the application and development of renewable energy.

[0003] However, traditional photovoltaic panel performance evaluation methods only focus on single indicators such as photoelectric conversion efficiency, while ignoring the complex working conditions and long-term stability of photovoltaic panels in actual environments, which leads to the lack of comprehensiveness and practicality of the evaluation results. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a photovoltaic panel performance evaluation method and system, including:

[0005] Obtain performance test data of various aspects of photovoltaic panels, and screen the performance test data to determine outstanding performance test data;

[0006] Analyze outstanding performance test data to determine candidate performance parameters that are highly correlated with photovoltaic panel performance;

[0007] Evaluate and select the candidate performance parameters to obtain evaluation values ​​of the candidate performance parameters, and determine key indicator parameters that affect the performance of the photovoltaic power generation panel based on the evaluation values;

[0008] The performance of the photovoltaic panels is evaluated and calculated based on the key indicator parameters that affect the performance of the photovoltaic panels, and the performance evaluation value of the photovoltaic panels is obtained.

[0009] Furthermore, the acquisition of performance test data of various aspects of the photovoltaic panels and screening of the performance test data to determine outstanding performance test data in the performance test data include:

[0010] Obtain performance test data of various aspects of photovoltaic panels and preprocess the performance test data, including removing abnormal data and overloaded data in the performance test data and filling in missing data;

[0011] The factory performance standard values ​​of the photovoltaic power generation panels are obtained, and the performance test data exceeding the factory performance standard values ​​in the performance test data are determined as the outstanding performance test data in the performance test data.

[0012] Furthermore, the analysis of the outstanding performance test data to determine candidate performance parameters that are highly correlated with the performance of the photovoltaic panel includes:

[0013] Divide the outstanding performance test data into several performance parameter data groups according to parameter types, and analyze the correlation between each performance parameter data group and the performance of the photovoltaic power generation panel;

[0014] A correlation threshold is preset, and performance parameters whose correlation exceeds the correlation threshold are determined as candidate performance parameters that are highly correlated with the performance of the photovoltaic power generation panel.

[0015] Furthermore, the analysis of the correlation between each performance parameter data set and the performance of the photovoltaic panel includes:

[0016] The correlation coefficient between each performance parameter data set and the performance of the photovoltaic panel is calculated respectively, and the obtained correlation coefficient is used as the correlation degree between the performance parameter data set and the performance of the photovoltaic panel.

[0017] Further, the evaluating and valuing the candidate performance parameters to obtain evaluation values ​​of the candidate performance parameters includes:

[0018] Obtaining the difference between the relevance of the candidate performance parameter and a preset relevance threshold, and evaluating the difference by an expert evaluation method to obtain a plurality of first evaluation values ​​corresponding to each candidate performance parameter;

[0019] An average value of several first evaluation values ​​corresponding to each candidate performance parameter is calculated to obtain a second evaluation value, and the second evaluation value is used as the evaluation value of each candidate performance parameter.

[0020] Furthermore, the key indicator parameters affecting the performance of the photovoltaic panel are determined according to the evaluation value, including:

[0021] Compare the evaluation value of the candidate performance parameter with the preset threshold value, and determine the key indicator parameter affecting the performance of the photovoltaic panel according to the comparison result;

[0022] If the evaluation value of the candidate performance parameter exceeds a preset threshold, the candidate performance parameter is determined as a key indicator parameter;

[0023] If the evaluation value of the candidate performance parameter does not exceed the preset threshold, the candidate performance parameter is not determined as a key indicator parameter.

[0024] Furthermore, the photovoltaic panel performance is evaluated and calculated based on the key indicator parameters that affect the performance of the photovoltaic panel to obtain the performance evaluation value of the photovoltaic panel, including:

[0025] Obtain key indicator parameters that affect the performance of photovoltaic panels and factory performance standard values ​​of photovoltaic panels, and determine performance test data corresponding to the key indicator parameters;

[0026] The performance test data is subtracted from the factory performance standard value to obtain the performance deviation data;

[0027] The performance deviation data is plotted into a performance deviation curve, and the peak value and the trough value in the performance deviation curve are extracted, and each peak value to trough value and each trough value to peak value are determined as deviation cycles;

[0028] Obtain the slope of each deviation period, calculate the average value of the slope of the deviation period, and use the average value as the weight of each key indicator parameter;

[0029] The evaluation value corresponding to each key indicator parameter is obtained, and the evaluation value of each key indicator parameter is weighted and added to the weight of each key indicator parameter to obtain the performance evaluation value of the photovoltaic panel.

[0030] The present invention also provides a photovoltaic panel performance evaluation system, comprising:

[0031] The acquisition module is used to acquire the performance test data of various aspects of the photovoltaic power generation panel, and screen the performance test data to determine the outstanding performance test data in the performance test data;

[0032] An analysis module is used to analyze outstanding performance test data and determine candidate performance parameters that are highly correlated with the performance of photovoltaic panels;

[0033] An evaluation module is used to evaluate and value candidate performance parameters, obtain evaluation values ​​of the candidate performance parameters, and determine key indicator parameters affecting the performance of photovoltaic panels based on the evaluation values;

[0034] The evaluation module is used to evaluate and calculate the performance of the photovoltaic power generation panel based on key indicator parameters that affect the performance of the photovoltaic power generation panel, and obtain a performance evaluation value of the photovoltaic power generation panel.

[0035] Compared with the prior art, the photovoltaic panel performance evaluation method and system according to the embodiment of the present invention have the following beneficial effects:

[0036] The present invention can achieve a comprehensive evaluation of the performance of photovoltaic panels by acquiring, screening and analyzing various aspects of performance data of photovoltaic panels, thereby better understanding their working status;

[0037] The present invention determines outstanding performance data in the photovoltaic panel performance test data through screening and analysis, which may have an important impact on the performance of photovoltaic panels in actual work and help focus on key factors;

[0038] The present invention determines candidate performance parameters that are highly correlated with the performance of photovoltaic panels through analysis of outstanding performance test data, providing an important basis for further evaluation and optimization;

[0039] Based on the evaluation values, the present invention determines the key index parameters that affect the performance of photovoltaic panels. These parameters may have an important impact on the overall performance of photovoltaic panels, which helps to deeply understand their performance.

[0040] The present invention evaluates and calculates the performance of photovoltaic panels based on determined key indicator parameters, obtains a quantitative evaluation value of the performance, and provides a scientific basis for design, optimization and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 is a schematic diagram of the process structure of a photovoltaic panel performance evaluation method in an embodiment of the present invention;

[0042] Figure 2 Schematic diagram of the composition of the photovoltaic panel performance evaluation system in an embodiment of the present invention. DETAILED DESCRIPTION

[0043] The specific implementation methods of the present application are further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0044] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the platform or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0045] The terms "second" and "second" are used for descriptive purposes only and should not be understood as indicating or implying a relative degree of importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined with "second" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "multiple" means two or more.

[0046] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technical personnel in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0047] like Figure 1 As shown, in an embodiment of the present application, a method for evaluating the performance of a photovoltaic panel is provided, including: S100: acquiring performance test data of various aspects of the photovoltaic panel, and screening the performance test data to determine outstanding performance test data in the performance test data; S200: analyzing the outstanding performance test data to determine candidate performance parameters that are highly correlated with the performance of the photovoltaic panel; S300: evaluating and taking values ​​of the candidate performance parameters to obtain evaluation values ​​of the candidate performance parameters, and determining key indicator parameters that affect the performance of the photovoltaic panel based on the evaluation values; S400: evaluating and calculating the performance of the photovoltaic panel based on the key indicator parameters that affect the performance of the photovoltaic panel to obtain a performance evaluation value of the photovoltaic panel.

[0048] Furthermore, the present invention can achieve a comprehensive evaluation of the performance of photovoltaic panels by acquiring, screening and analyzing various aspects of performance data of photovoltaic panels, so as to better understand their working status; the present invention determines the outstanding performance data in the performance test data of photovoltaic panels through screening and analysis, and these data may have an important impact on the performance of photovoltaic panels in actual work, which helps to focus on key factors; the present invention determines the candidate performance parameters that are highly correlated with the performance of photovoltaic panels through analysis of outstanding performance test data, which provides an important basis for further evaluation and optimization; the present invention determines the key indicator parameters that affect the performance of photovoltaic panels based on the evaluation values, and these parameters may have an important impact on the overall performance of photovoltaic panels, which helps to deeply understand their performance; the present invention evaluates and calculates the performance of photovoltaic panels based on the determined key indicator parameters, obtains a quantitative evaluation value of its performance, and provides a scientific basis for design, optimization and application.

[0049] In an embodiment of the present application, a method for evaluating the performance of a photovoltaic panel is provided, wherein performance test data of various aspects of the photovoltaic panel are obtained, and the performance test data are screened to determine outstanding performance test data in the performance test data, including: obtaining performance test data of various aspects of the photovoltaic panel, and preprocessing the performance test data, the preprocessing including removing abnormal data and overloaded data in the performance test data and filling in missing data; obtaining factory performance standard values ​​of the photovoltaic panel, and determining performance test data in the performance test data that exceeds the factory performance standard values ​​as outstanding performance test data in the performance test data.

[0050] Specifically, various performance test data of photovoltaic panels are collected, including data on photoelectric conversion efficiency, IV curve data, temperature characteristics, lighting conditions, shadow effects, etc.; abnormal data are removed, and abnormal values ​​in performance test data are identified and removed through data analysis and statistical methods to ensure the accuracy and reliability of the data; duplicate data are removed, and duplicate or redundant performance test data are excluded to ensure the independence and representativeness of the data; missing data are filled, and interpolation methods or other reasonable filling methods can be used to repair the data for missing performance test data to ensure the integrity and continuity of the data; factory performance standard values ​​are obtained from the product specification sheet or technical documents of photovoltaic panels, including parameters such as photoelectric conversion efficiency and maximum power point; data in performance test data that exceeds factory performance standard values ​​are determined as outstanding performance test data, that is, data that exceeds product specification standards, which may show particularly excellent performance. Through the above preprocessing steps, the accuracy and credibility of the performance test data of photovoltaic panels used can be ensured, and outstanding performance test data are determined, which is helpful for subsequent analysis and evaluation.

[0051] In an embodiment of the present application, a method for evaluating the performance of a photovoltaic panel is provided, wherein outstanding performance detection data is analyzed to determine candidate performance parameters that are highly correlated with the performance of the photovoltaic panel, including: dividing the outstanding performance detection data into a number of performance parameter data groups according to parameter type, and analyzing the correlation between each performance parameter data group and the performance of the photovoltaic panel; presetting a correlation threshold, and determining performance parameters whose correlation exceeds the correlation threshold as candidate performance parameters that are highly correlated with the performance of the photovoltaic panel.

[0052] Specifically, the outstanding performance test data are classified according to parameter types to form several performance parameter data groups, such as photoelectric conversion efficiency data group, temperature characteristic data group, IV curve data group, etc.; correlation analysis is performed on each performance parameter data group to determine which parameters are closely related to the performance of photovoltaic panels; a correlation threshold is pre-set, and this threshold is determined based on professional knowledge. The correlation exceeding this threshold can be regarded as a performance parameter that is highly correlated with the performance of photovoltaic panels; performance parameters with correlations exceeding the correlation threshold are determined as candidate performance parameters that are highly correlated with the performance of photovoltaic panels, and these parameters have an important impact on the overall performance of photovoltaic panels. Through the above analysis, it can be determined which performance parameters are highly correlated with the performance of photovoltaic panels, thereby providing an important basis for subsequent evaluation and optimization.

[0053] In an embodiment of the present application, a method for evaluating the performance of a photovoltaic panel is provided, wherein the analysis of the correlation between each group of performance parameter data groups and the performance of the photovoltaic panel comprises: respectively calculating the correlation coefficient between each group of performance parameter data groups and the performance of the photovoltaic panel, and using the obtained correlation coefficient as the correlation between the performance parameter data group and the performance of the photovoltaic panel.

[0054] Specifically, the correlation coefficient between each performance parameter data set and the performance of the photovoltaic panel is calculated, and the linear correlation between the two variables is measured by the correlation coefficient. By calculating the correlation coefficient between each performance parameter data set and the performance of the photovoltaic panel, the correlation between different performance parameters and the performance of the photovoltaic panel can be obtained, which helps to determine which parameters have a stronger impact on the performance of the photovoltaic panel.

[0055] In an embodiment of the present application, a photovoltaic panel performance evaluation method is provided, wherein the candidate performance parameters are evaluated and evaluated to obtain evaluation values ​​of the candidate performance parameters, including: obtaining the difference between the correlation of the candidate performance parameter and a preset correlation threshold, and evaluating the difference through an expert evaluation method to obtain a number of first evaluation values ​​corresponding to each candidate performance parameter; calculating the average of the several first evaluation values ​​corresponding to each candidate performance parameter to obtain a second evaluation value, and using the second evaluation value as the evaluation value of each candidate performance parameter.

[0056] Specifically, the difference between the relevance of each candidate performance parameter and the preset relevance threshold is calculated, that is, the difference between the correlation coefficient and the preset threshold; experts in related fields are invited to evaluate and select these differences. Experts can score or evaluate the differences based on their professional knowledge and experience. For example, a 1-5 point system can be used for scoring, 5 points for high relevance, 1 point for low relevance, and each candidate performance parameter will receive evaluation values ​​from multiple experts, so each candidate performance parameter corresponds to multiple first evaluation values; the multiple first evaluation values ​​of each candidate performance parameter are averaged to obtain a second evaluation value, and this average value can be regarded as a final evaluation value that integrates the evaluations of multiple experts; the second evaluation value is used as the evaluation value of each candidate performance parameter, indicating the importance of the parameter to the performance of the photovoltaic panel. Through the above steps, the evaluation value of each candidate performance parameter can be obtained, which helps to determine which parameters have the greatest impact on the performance of the photovoltaic panel.

[0057] In an embodiment of the present application, a method for evaluating the performance of a photovoltaic panel is provided, wherein determining key indicator parameters affecting the performance of a photovoltaic panel based on an evaluation value comprises: comparing the evaluation value of a candidate performance parameter with a preset threshold, and determining the key indicator parameters affecting the performance of the photovoltaic panel based on the comparison result; if the evaluation value of the candidate performance parameter exceeds the preset threshold, determining the candidate performance parameter as the key indicator parameter; if the evaluation value of the candidate performance parameter does not exceed the preset threshold, not determining the candidate performance parameter as the key indicator parameter.

[0058] Specifically, the evaluation value of each candidate performance parameter is compared with the preset threshold value. If the evaluation value exceeds the preset threshold value, the candidate performance parameter is determined as a key indicator parameter; if the evaluation value does not exceed the preset threshold value, the candidate performance parameter is not determined as a key indicator parameter; for those candidate performance parameters whose evaluation values ​​exceed the preset threshold value, they are determined as key indicator parameters because they are considered to have an important impact on the performance of photovoltaic panels; those candidate performance parameters whose evaluation values ​​do not exceed the preset threshold value are not considered to be key indicator parameters, and their impact on the performance of photovoltaic panels is relatively small. Through this comparison and determination process, you can clearly identify which performance parameters are determined as key indicator parameters, which helps to focus on monitoring and optimizing these parameters to improve the overall performance of photovoltaic panels.

[0059] In an embodiment of the present application, a method for evaluating the performance of a photovoltaic panel is provided, wherein the performance of the photovoltaic panel is evaluated and calculated based on key indicator parameters that affect the performance of the photovoltaic panel to obtain a performance evaluation value of the photovoltaic panel, including: obtaining the key indicator parameters that affect the performance of the photovoltaic panel and the factory performance standard values ​​of the photovoltaic panel, and determining the performance test data corresponding to the key indicator parameters; performing a difference calculation between the performance test data and the factory performance standard values ​​to obtain performance deviation data; plotting the performance deviation data into a performance deviation curve, extracting the peak value and the trough value in the performance deviation curve, and determining each peak value to trough value and each trough value to peak value as a deviation period; obtaining the slope of each deviation period, and calculating the average value of the slope of the deviation period, and using the average value as the weight corresponding to each key indicator parameter; obtaining the evaluation value corresponding to each key indicator parameter, and performing a weighted addition calculation on the evaluation value of each key indicator parameter and the weight of each key indicator parameter to obtain the performance evaluation value of the photovoltaic panel.

[0060] Specifically, based on previous evaluations and comparisons, key indicator parameters that affect the performance of photovoltaic panels are determined, the factory performance standard values ​​of photovoltaic panels corresponding to each key indicator parameter are determined, and performance test data of photovoltaic panels are collected to ensure that each key indicator parameter is covered; the performance test data is subtracted from the factory performance standard value to obtain performance deviation data; the performance deviation data is plotted into a performance deviation curve, the peak value and trough value are extracted from the performance deviation curve, the deviation period is determined, the slope of each deviation period is obtained, and the average value of the slope of the deviation period is calculated, and the average value is used as the weight corresponding to each key indicator parameter; the evaluation value corresponding to each key indicator parameter is determined, and the evaluation value of each key indicator parameter is weighted and added with the corresponding weight to obtain the performance evaluation value of the photovoltaic panel.

[0061] like Figure 2 As shown, in an embodiment of the present application, a photovoltaic panel performance evaluation system is provided, including: an acquisition module, used to acquire performance test data of various aspects of the photovoltaic panel, and screen the performance test data to determine outstanding performance test data in the performance test data; an analysis module, used to analyze the outstanding performance test data, and determine candidate performance parameters that are highly correlated with the performance of the photovoltaic panel; an evaluation module, used to evaluate and determine the candidate performance parameters, obtain evaluation values ​​of the candidate performance parameters, and determine key indicator parameters that affect the performance of the photovoltaic panel based on the evaluation values; an evaluation module, used to evaluate and calculate the performance of the photovoltaic panel based on the key indicator parameters that affect the performance of the photovoltaic panel, and obtain a performance evaluation value of the photovoltaic panel.

[0062] In summary, the embodiment of the present invention provides a method and system for evaluating the performance of photovoltaic panels, which includes: obtaining performance test data of various aspects of photovoltaic panels, and screening the performance test data to determine outstanding performance test data in the performance test data; analyzing the outstanding performance test data to determine candidate performance parameters that are highly correlated with the performance of photovoltaic panels; evaluating and taking values ​​for the candidate performance parameters to obtain evaluation values ​​of the candidate performance parameters, and determining key indicator parameters that affect the performance of photovoltaic panels based on the evaluation values; evaluating and calculating the performance of photovoltaic panels based on the key indicator parameters that affect the performance of photovoltaic panels to obtain the performance evaluation values ​​of photovoltaic panels. The present invention can achieve a comprehensive evaluation of the performance of photovoltaic panels by screening and analyzing the performance data of various aspects of photovoltaic panels to determine the performance parameters, thereby better understanding the working status of photovoltaic panels and providing a scientific basis for the design and optimization of photovoltaic panels.

[0063] Finally, it should be noted that: Obviously, a person skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the present invention and its equivalent technology, the present invention is also intended to include these modifications and variations.

[0064] The above is only an example of implementation of the present invention, but it cannot be used to limit the scope of the present invention. Any structural changes made according to the present invention, as long as they do not lose the essence of the present invention, should be regarded as falling within the scope of protection of the present invention and being restricted. Technical personnel in the relevant technical field can clearly understand that for the convenience and simplicity of description, the specific working process and related instructions of the platform described above can refer to the corresponding process in the aforementioned platform embodiment, and will not be repeated here.

[0065] The term "comprises" or any other similar term is intended to cover a non-exclusive inclusion such that a process, platform, article, or apparatus / platform that includes a list of elements includes not only those elements but also other elements not expressly listed or inherent to such process, platform, article, or apparatus / platform.

[0066] So far, the technical solutions of the present invention have been described in conjunction with the further embodiments shown in the accompanying drawings. However, it is easy for a person skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, a person skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

[0067] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention.

Claims

1. A method for evaluating the performance of a photovoltaic panel, characterized in that: include: Obtain performance test data of various aspects of photovoltaic panels, and screen the performance test data to determine outstanding performance test data; Analyze outstanding performance test data to determine candidate performance parameters that are highly correlated with photovoltaic panel performance; Evaluate and select the candidate performance parameters to obtain evaluation values ​​of the candidate performance parameters, and determine key indicator parameters that affect the performance of the photovoltaic power generation panel based on the evaluation values; The performance of the photovoltaic panels is evaluated and calculated based on the key indicator parameters that affect the performance of the photovoltaic panels, and the performance evaluation value of the photovoltaic panels is obtained.

2. A photovoltaic panel performance evaluation method according to claim 1, characterized in that: The method of obtaining performance test data of various aspects of the photovoltaic panels and screening the performance test data to determine outstanding performance test data in the performance test data includes: Obtain performance test data of various aspects of photovoltaic panels and preprocess the performance test data, including removing abnormal data and overloaded data in the performance test data and filling in missing data; The factory performance standard values ​​of the photovoltaic power generation panels are obtained, and the performance test data exceeding the factory performance standard values ​​in the performance test data are determined as the outstanding performance test data in the performance test data.

3. A photovoltaic panel performance evaluation method according to claim 2, characterized in that: The analysis of outstanding performance test data to determine candidate performance parameters that are highly correlated with the performance of photovoltaic panels includes: Divide the outstanding performance test data into several performance parameter data groups according to parameter types, and analyze the correlation between each performance parameter data group and the performance of the photovoltaic power generation panel; A correlation threshold is preset, and performance parameters whose correlation exceeds the correlation threshold are determined as candidate performance parameters that are highly correlated with the performance of the photovoltaic power generation panel.

4. A photovoltaic panel performance evaluation method according to claim 3, characterized in that: The analysis of the correlation between each performance parameter data set and the performance of the photovoltaic panel includes: The correlation coefficient between each performance parameter data set and the performance of the photovoltaic panel is calculated respectively, and the obtained correlation coefficient is used as the correlation degree between the performance parameter data set and the performance of the photovoltaic panel.

5. A photovoltaic panel performance evaluation method according to claim 4, characterized in that: The step of evaluating and valuing the candidate performance parameters to obtain evaluation values ​​of the candidate performance parameters includes: Obtaining the difference between the relevance of the candidate performance parameter and a preset relevance threshold, and evaluating the difference by an expert evaluation method to obtain a plurality of first evaluation values ​​corresponding to each candidate performance parameter; An average value of several first evaluation values ​​corresponding to each candidate performance parameter is calculated to obtain a second evaluation value, and the second evaluation value is used as the evaluation value of each candidate performance parameter.

6. A photovoltaic panel performance evaluation method according to claim 5, characterized in that: Determining the key index parameters affecting the performance of the photovoltaic panel according to the evaluation value includes: Compare the evaluation value of the candidate performance parameter with the preset threshold value, and determine the key indicator parameter affecting the performance of the photovoltaic panel according to the comparison result; If the evaluation value of the candidate performance parameter exceeds a preset threshold, the candidate performance parameter is determined as a key indicator parameter; If the evaluation value of the candidate performance parameter does not exceed the preset threshold, the candidate performance parameter is not determined as a key indicator parameter.

7. A photovoltaic panel performance evaluation method according to claim 6, characterized in that: The photovoltaic panel performance is evaluated and calculated based on the key indicator parameters that affect the performance of the photovoltaic panel to obtain the performance evaluation value of the photovoltaic panel, including: Obtain key indicator parameters that affect the performance of photovoltaic panels and factory performance standard values ​​of photovoltaic panels, and determine performance test data corresponding to the key indicator parameters; The performance test data is subtracted from the factory performance standard value to obtain the performance deviation data; The performance deviation data is plotted into a performance deviation curve, and the peak value and the trough value in the performance deviation curve are extracted, and each peak value to trough value and each trough value to peak value are determined as deviation cycles; Obtain the slope of each deviation period, calculate the average value of the slope of the deviation period, and use the average value as the weight of each key indicator parameter; The evaluation value corresponding to each key indicator parameter is obtained, and the evaluation value of each key indicator parameter is weighted and added to the weight of each key indicator parameter to obtain the performance evaluation value of the photovoltaic panel.

8. A photovoltaic panel performance evaluation system, characterized in that: include: The acquisition module is used to acquire the performance test data of various aspects of the photovoltaic power generation panel, and screen the performance test data to determine the outstanding performance test data in the performance test data; An analysis module is used to analyze outstanding performance test data and determine candidate performance parameters that are highly correlated with the performance of photovoltaic panels; An evaluation module is used to evaluate and value candidate performance parameters, obtain evaluation values ​​of the candidate performance parameters, and determine key indicator parameters affecting the performance of photovoltaic panels based on the evaluation values; The evaluation module is used to evaluate and calculate the performance of the photovoltaic power generation panel based on key indicator parameters that affect the performance of the photovoltaic power generation panel, and obtain a performance evaluation value of the photovoltaic power generation panel.

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