A photovoltaic power station intelligent monitoring operation and maintenance method and system

Abstract

The present invention discloses a method and system for intelligent monitoring and operation and maintenance of a photovoltaic power station, which includes: obtaining the operation monitoring data of the photovoltaic power station, analyzing the data, and determining the state evaluation index of the photovoltaic power station; evaluating and calculating the state of the photovoltaic power station according to the state evaluation index, and obtaining its first state evaluation value; judging whether the photovoltaic power station meets the state requirements according to the state evaluation value, and formulating the inspection and maintenance plan parameters of the photovoltaic power station according to the state evaluation value after judging that it does not meet the state requirements; obtaining the second state evaluation value of the photovoltaic power station after the inspection and maintenance of the photovoltaic power station for a preset time period according to the inspection and maintenance plan parameters, and analyzing the difference between the first state evaluation value and the second state evaluation value; setting an adjustment strategy according to the difference, and adjusting the inspection and maintenance plan parameters according to the difference. The present invention can make the operation and management of the photovoltaic power station more intelligent, efficient and sustainable, improve the utilization rate and reliability of photovoltaic equipment, and reduce operating costs.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic power generation, and in particular to an intelligent monitoring and operation and maintenance method and system for a photovoltaic power station. Background Art

[0002] With the rapid development of the renewable energy industry, photovoltaic power stations have been widely used as an important clean energy generation method. However, the operation and maintenance management of photovoltaic power stations face a series of challenges, and there are certain complexities and difficulties in some aspects.

[0003] Traditional photovoltaic power station operation and maintenance management methods lack intelligent decision-making support in status assessment and maintenance plan formulation. They usually rely on manual experience and simple rules and are difficult to cope with complex changes in operating status. In addition, traditional methods only set up the operation and maintenance management of photovoltaic power stations once and manage them according to the plan. They are unable to adjust the operation and maintenance management according to the operation of the photovoltaic power station, making it increasingly difficult for the operation and maintenance management to adapt to the normal operation of the photovoltaic power station. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a method and system for intelligent monitoring and operation of a photovoltaic power station, comprising:

[0005] Obtain the operation monitoring data of the photovoltaic power station, analyze the operation monitoring data, and determine the status evaluation indicators of the photovoltaic power station;

[0006] The state of the photovoltaic power station is evaluated and calculated according to the state evaluation index to obtain a first state evaluation value of the photovoltaic power station;

[0007] Determine whether the photovoltaic power station meets the status requirements according to the status evaluation value, and if it is determined that the photovoltaic power station does not meet the status requirements, formulate inspection and maintenance plan parameters for the photovoltaic power station according to the status evaluation value;

[0008] Obtaining a second state evaluation value of the photovoltaic power station after the photovoltaic power station is inspected and maintained for a preset period of time according to the inspection and maintenance plan parameters, and analyzing the difference between the first state evaluation value and the second state evaluation value;

[0009] An adjustment strategy is set according to the difference, and the inspection and maintenance plan parameters of the photovoltaic power station are adjusted according to the adjustment strategy.

[0010] Furthermore, the obtaining of the operation monitoring data of the photovoltaic power station and analyzing the operation monitoring data to determine the status evaluation index of the photovoltaic power station include:

[0011] Acquire operation monitoring data of the photovoltaic power station, and divide the operation monitoring data into several parameter data groups according to parameter types;

[0012] The correlation between each parameter data group and the state of the photovoltaic power station is analyzed, the parameter data group whose correlation exceeds the preset value is selected, and the parameters corresponding to the parameter data group whose correlation exceeds the preset value are used as the state evaluation index.

[0013] Furthermore, the analysis of the correlation between each parameter data group and the photovoltaic power station state includes:

[0014] The status data of the photovoltaic power station is obtained, and the correlation coefficient between each parameter data group and the status data is calculated respectively, and the obtained correlation coefficient is used as the correlation degree between each parameter data group and the status of the photovoltaic power station.

[0015] Furthermore, the evaluating and calculating the state of the photovoltaic power station according to the state evaluation index to obtain a first state evaluation value of the photovoltaic power station includes:

[0016] Preset a standard correlation coefficient and obtain the correlation coefficient between each status evaluation indicator and the status of the photovoltaic power station;

[0017] Calculate the difference between each correlation coefficient and the standard correlation coefficient, and set the weight of each state evaluation indicator according to the size of the difference;

[0018] Obtain the parameter data group corresponding to each state evaluation indicator, and calculate the standard deviation of each parameter data group;

[0019] Evaluate and value the standard deviation of each parameter data group to obtain the state evaluation value of each state evaluation indicator;

[0020] The state evaluation value corresponding to each state evaluation indicator is weightedly added to the corresponding preset weight to obtain a first state evaluation value of the photovoltaic power station.

[0021] Further, judging whether the photovoltaic power station meets the status requirements according to the status evaluation value, and formulating the inspection and maintenance plan parameters of the photovoltaic power station according to the status evaluation value after judging that the photovoltaic power station does not meet the status requirements, includes:

[0022] Preset a status assessment threshold, compare the status assessment value with the status assessment threshold, and determine whether the photovoltaic power station meets the status requirements based on the comparison result;

[0023] If the status assessment value exceeds the status assessment threshold, it is judged that the photovoltaic power station meets the status requirements;

[0024] If the status assessment value does not exceed the status assessment threshold, it is determined that the photovoltaic power station does not meet the status requirements;

[0025] After determining that the PV power station does not meet the status requirements, the status level of the PV power station is determined according to the status evaluation value, and the inspection and maintenance frequency, inspection and maintenance cycle and inspection and maintenance nodes of the PV power station are formulated according to the status level of the PV power station.

[0026] Further, the obtaining of a second state evaluation value of the photovoltaic power station after the photovoltaic power station is inspected and maintained for a preset period of time according to the inspection and maintenance plan parameters, and analyzing the difference between the first state evaluation value and the second state evaluation value, includes:

[0027] After performing inspection and maintenance on the photovoltaic power station for a preset period of time according to the inspection and maintenance plan parameters, the state of the photovoltaic power station is evaluated again to obtain a second state evaluation value of the photovoltaic power station;

[0028] A difference between the first state evaluation value and the second state evaluation value is calculated, and the difference is used as the difference between the first state evaluation value and the second state evaluation value.

[0029] Further, setting an adjustment strategy according to the difference, and adjusting the inspection and maintenance plan parameters of the photovoltaic power station according to the adjustment strategy, includes:

[0030] A corresponding relationship between adjustment coefficient and difference interval is preset, and the corresponding relationship between adjustment coefficient and difference interval is associated with a corresponding adjustment coefficient for each difference interval;

[0031] The difference is obtained, and based on the mapping relationship between the difference interval to which the difference belongs and the adjustment coefficient corresponding to the difference interval, an adjustment coefficient corresponding to the difference interval is selected;

[0032] Each parameter in the inspection and maintenance plan parameters of the photovoltaic power station is multiplied and adjusted one by one according to the adjustment coefficient to complete the adjustment of the inspection and maintenance plan parameters of the photovoltaic power station.

[0033] The present invention also provides a photovoltaic power station intelligent monitoring and operation and maintenance system, comprising:

[0034] The acquisition module is used to acquire the operation monitoring data of the photovoltaic power station, analyze the operation monitoring data, and determine the status evaluation index of the photovoltaic power station;

[0035] An evaluation module, used to evaluate and calculate the state of the photovoltaic power station according to the state evaluation index to obtain a first state evaluation value of the photovoltaic power station;

[0036] A judgment module is used to judge whether the photovoltaic power station meets the status requirements according to the status evaluation value, and after judging that the photovoltaic power station does not meet the status requirements, formulate inspection and maintenance plan parameters of the photovoltaic power station according to the status evaluation value;

[0037] An analysis module, used to obtain a second state evaluation value of the photovoltaic power station after the photovoltaic power station is inspected and maintained for a preset period of time according to the inspection and maintenance plan parameters, and to analyze the difference between the first state evaluation value and the second state evaluation value;

[0038] The adjustment module is used to set an adjustment strategy according to the difference, and adjust the inspection and maintenance plan parameters of the photovoltaic power station according to the adjustment strategy.

[0039] Compared with the prior art, the photovoltaic power station intelligent monitoring and operation and maintenance method and system according to the embodiment of the present invention have the following beneficial effects:

[0040] The present invention can realize real-time monitoring of the operating status of a photovoltaic power station through data acquisition and analysis, and timely discover equipment abnormalities or performance degradation;

[0041] The present invention utilizes state assessment indicators and assessment algorithms to realize intelligent assessment calculation of the state of a photovoltaic power station and provide objective and accurate state assessment values;

[0042] The present invention can analyze the change of equipment status by analyzing the difference between the first status evaluation value and the second status evaluation value, and can implement targeted adjustment strategies, including intelligent adjustment of inspection and maintenance plan parameters, so as to improve maintenance efficiency and reduce costs;

[0043] The present invention can realize automatic decision-making on whether the status of a photovoltaic power station meets the requirements based on the judgment of the status evaluation value, thereby reducing human intervention and improving operation and maintenance efficiency;

[0044] The entire process of the present invention is based on a large amount of real-time monitoring data and historical data analysis, realizing data-driven operation management of photovoltaic power stations and improving the scientificity and accuracy of management decisions. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 Schematic diagram of the process structure of the photovoltaic power station intelligent monitoring and operation method in an embodiment of the present invention;

[0046] Figure 2 It is a schematic diagram of the composition of the intelligent monitoring and operation and maintenance system of a photovoltaic power station in an embodiment of the present invention. DETAILED DESCRIPTION

[0047] 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.

[0048] 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.

[0049] 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.

[0050] 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.

[0051] like Figure 1 As shown, in an embodiment of the present application, a method for intelligent monitoring and operation and maintenance of a photovoltaic power station is provided, including: S100: obtaining operation monitoring data of the photovoltaic power station, and analyzing the operation monitoring data to determine a state evaluation index of the photovoltaic power station; S200: evaluating and calculating the state of the photovoltaic power station according to the state evaluation index to obtain a first state evaluation value of the photovoltaic power station; S300: judging whether the photovoltaic power station meets the state requirements according to the state evaluation value, and after judging that the photovoltaic power station does not meet the state requirements, formulating inspection and maintenance plan parameters of the photovoltaic power station according to the state evaluation value; S400: obtaining a second state evaluation value of the photovoltaic power station after the photovoltaic power station is inspected and maintained for a preset time period according to the inspection and maintenance plan parameters, and analyzing the difference between the first state evaluation value and the second state evaluation value; S500: setting an adjustment strategy according to the difference, and adjusting the inspection and maintenance plan parameters of the photovoltaic power station according to the adjustment strategy.

[0052] Furthermore, the present invention can realize real-time monitoring of the operating status of photovoltaic power stations through data acquisition and analysis, and timely discover equipment abnormalities or performance degradation; the present invention uses status evaluation indicators and evaluation algorithms to realize intelligent evaluation and calculation of the status of photovoltaic power stations, and provide objective and accurate status evaluation values; the present invention can realize analysis of equipment status changes through differential analysis of the first status evaluation value and the second status evaluation value, and can implement targeted adjustment strategies, including intelligent adjustment of inspection and maintenance plan parameters, to improve maintenance efficiency and reduce costs; the present invention can realize automated decision-making on whether the status of the photovoltaic power station meets the requirements based on the judgment of the status evaluation value, thereby reducing human intervention and improving operation and maintenance efficiency; the entire process of the present invention is based on a large amount of real-time monitoring data and historical data analysis, to realize data-driven operation and management of photovoltaic power stations, and improve the scientificity and accuracy of management decisions.

[0053] In an embodiment of the present application, a method for intelligent monitoring and operation and maintenance of a photovoltaic power station is provided, wherein the operation monitoring data of the photovoltaic power station is obtained, and the operation monitoring data is analyzed to determine a state evaluation index of the photovoltaic power station, including: obtaining the operation monitoring data of the photovoltaic power station, and dividing the operation monitoring data into a plurality of parameter data groups according to parameter type; analyzing the correlation between each parameter data group and the state of the photovoltaic power station, selecting the parameter data group whose correlation exceeds a preset value, and using the parameter corresponding to the parameter data group whose correlation exceeds the preset value as the state evaluation index.

[0054] Specifically, the operation monitoring data of various parameters are obtained from the monitoring equipment and sensors of the photovoltaic power station, including but not limited to power generation, temperature, radiation intensity, inverter efficiency, wind speed, etc.; the obtained operation monitoring data are divided into several parameter data groups according to the parameter type, for example, all temperature-related data are divided into one group, all power generation-related data are divided into another group, and so on; the correlation between each parameter data group and the photovoltaic power station state is analyzed, and the correlation analysis method is used to measure the correlation between each parameter data group and the photovoltaic power station state; according to the actual situation and professional knowledge, a preset correlation threshold is set, and the parameter data group exceeding the threshold will be selected for the state evaluation index, and the parameter data group whose correlation exceeds the preset value will be selected, and these parameters will be used as the state evaluation index. These parameters have a high correlation and can better reflect the operation state of the photovoltaic power station. Through the above steps, the operation monitoring data of the photovoltaic power station can be reasonably divided and analyzed, and the parameters with a high correlation with the photovoltaic power station state can be selected as the state evaluation index, which provides strong support for the subsequent state evaluation and maintenance plan formulation.

[0055] In an embodiment of the present application, a method for intelligent monitoring and operation of a photovoltaic power station is provided, wherein the analysis of the correlation between each parameter data group and the state of the photovoltaic power station comprises: acquiring the state data of the photovoltaic power station, and respectively calculating the correlation coefficient between each parameter data group and the state data, and using the obtained correlation coefficient as the correlation between each parameter data group and the state of the photovoltaic power station.

[0056] Specifically, the status data of the photovoltaic power station is obtained, including the operating status and performance indicators of the photovoltaic power station; for each parameter data group, the correlation between it and the status data can be calculated using the correlation coefficient. Commonly used correlation coefficients include the Pearson correlation coefficient and the Spearman's rank correlation coefficient. The Pearson correlation coefficient is suitable for measuring the linear correlation between two continuous variables, while the Spearman's rank correlation coefficient is more suitable for measuring the monotonic relationship between two variables, and does not require the variables to be linearly related. Once the correlation coefficient is calculated, the correlation coefficient can be used as a correlation index between each parameter data group and the photovoltaic power station status. The closer the correlation coefficient is to 1 (positive correlation) or -1 (negative correlation), the stronger the correlation between the parameter data group and the photovoltaic power station status. Through the above steps, the correlation coefficient between each parameter data group and the photovoltaic power station status can be obtained, thereby quantifying the correlation between each parameter data group and the status data, providing strong support for further status assessment and maintenance plan formulation.

[0057] In an embodiment of the present application, a method for intelligent monitoring and operation of a photovoltaic power station is provided, wherein the state of the photovoltaic power station is evaluated and calculated according to the state evaluation index to obtain a first state evaluation value of the photovoltaic power station, including: presetting a standard correlation coefficient, and obtaining the correlation coefficient between each state evaluation index and the state of the photovoltaic power station; calculating the difference between each correlation coefficient and the standard correlation coefficient, and setting the weight of each state evaluation index according to the size of the difference; obtaining a parameter data group corresponding to each state evaluation index, and calculating the standard deviation of each parameter data group; evaluating and valuing the standard deviation of each parameter data group to obtain a state evaluation value of each state evaluation index; and performing weighted addition calculation on the state evaluation value corresponding to each state evaluation index and the corresponding preset weight to obtain the first state evaluation value of the photovoltaic power station.

[0058] Specifically, a standard correlation coefficient is pre-set as a standard for measuring the correlation between the state evaluation index and the state of the photovoltaic power station, and the correlation coefficient between each state evaluation index and the state of the photovoltaic power station is obtained, and the calculation is performed according to the method mentioned above; the correlation coefficient of each state evaluation index is compared with the pre-set standard correlation coefficient, and the difference between them is calculated. According to the size of the difference between the correlation coefficient and the standard correlation coefficient, the weight of each state evaluation index is set, and the larger the difference, the higher the weight; the parameter data group corresponding to each state evaluation index is determined, and then the standard deviation of each parameter data group is calculated for subsequent state evaluation; the evaluation value is evaluated according to the standard deviation of each parameter data group to determine its importance in the state evaluation; the state evaluation value corresponding to each state evaluation index is weighted and added with the corresponding preset weight to obtain the first state evaluation value of the photovoltaic power station. Through the above steps, the first state evaluation value of the photovoltaic power station can be obtained, which comprehensively considers the correlation, weight and standard deviation of the parameter data group between each state evaluation index and the state of the photovoltaic power station, and provides a comprehensive state evaluation result, which is helpful for a more in-depth state evaluation of the photovoltaic power station and subsequent operation and maintenance decisions.

[0059] In an embodiment of the present application, a method for intelligent monitoring and operation and maintenance of a photovoltaic power station is provided, wherein the method determines whether the photovoltaic power station meets the status requirements according to a status evaluation value, and after determining that the photovoltaic power station does not meet the status requirements, formulates the inspection and maintenance plan parameters of the photovoltaic power station according to the status evaluation value, including: presetting a status evaluation threshold, comparing the status evaluation value with the status evaluation threshold, and determining whether the photovoltaic power station meets the status requirements according to the comparison result; if the status evaluation value exceeds the status evaluation threshold, determining that the photovoltaic power station meets the status requirements; if the status evaluation value does not exceed the status evaluation threshold, determining that the photovoltaic power station does not meet the status requirements; after determining that the photovoltaic power station does not meet the status requirements, determining the status level of the photovoltaic power station according to the status evaluation value, and formulating the inspection and maintenance frequency, inspection and maintenance cycle, and inspection and maintenance nodes of the photovoltaic power station according to the status level of the photovoltaic power station.

[0060] Specifically, a state evaluation threshold is pre-set as a standard for judging whether the photovoltaic power station meets the state requirements, and the state evaluation value is compared with the state evaluation threshold. According to the comparison result, it is judged whether the photovoltaic power station meets the state requirements. If the state evaluation value exceeds the state evaluation threshold, it is judged that the photovoltaic power station meets the state requirements; otherwise, it is judged that the photovoltaic power station does not meet the state requirements; after judging that the photovoltaic power station does not meet the state requirements, the state level of the photovoltaic power station is determined according to the state evaluation value, and the size of the state evaluation value can be used to determine the state level of the photovoltaic power station, for example, divided into good, general, poor and other levels; according to the state level of the photovoltaic power station, the corresponding inspection and maintenance frequency, cycle and node are formulated. For example, for photovoltaic power stations with poor state levels, it may be necessary to increase the inspection frequency, shorten the inspection cycle, and strengthen the inspection and maintenance of key nodes. Through the above steps, it is possible to judge whether the state of the photovoltaic power station meets the requirements according to the state evaluation value, and determine the state level of the photovoltaic power station according to the size of the evaluation value, and then formulate the corresponding inspection and maintenance frequency, cycle and node, which is helpful to reasonably arrange the inspection and maintenance work of the photovoltaic power station according to the actual situation, and timely discover and solve problems to ensure the normal operation of the photovoltaic power station.

[0061] In an embodiment of the present application, a method for intelligent monitoring and operation and maintenance of a photovoltaic power station is provided, wherein a second state evaluation value of the photovoltaic power station is obtained after the photovoltaic power station is inspected and maintained for a preset time period according to the inspection and maintenance plan parameters, and a difference between the first state evaluation value and the second state evaluation value is analyzed, including: after the photovoltaic power station is inspected and maintained for a preset time period according to the inspection and maintenance plan parameters, the state of the photovoltaic power station is evaluated again to obtain the second state evaluation value of the photovoltaic power station; and the difference between the first state evaluation value and the second state evaluation value is calculated, and the difference is used as the difference between the first state evaluation value and the second state evaluation value.

[0062] Specifically, according to the inspection and maintenance plan parameters, the photovoltaic power station is inspected and maintained, including inspection, maintenance and possible repair work of the equipment; after the preset time period of the inspection and maintenance, the status of the photovoltaic power station is evaluated again to obtain the second status evaluation value of the photovoltaic power station; the first status evaluation value is compared with the second status evaluation value, and the difference between them is calculated. A simple subtraction operation can be used to obtain the difference between the two values. Through the above steps, the difference between the first status evaluation value and the second status evaluation value can be obtained, so as to understand the changes in the status of the photovoltaic power station after the inspection and maintenance, which helps to evaluate the effectiveness of the inspection and maintenance, timely discover changes in the operating status of the equipment, and adjust subsequent maintenance plans and measures as needed.

[0063] In an embodiment of the present application, a method for intelligent monitoring and operation and maintenance of a photovoltaic power station is provided, wherein an adjustment strategy is set according to the difference, and the inspection and maintenance plan parameters of the photovoltaic power station are adjusted according to the adjustment strategy, including: presetting an adjustment coefficient-difference interval correspondence relationship, wherein the adjustment coefficient-difference interval correspondence relationship is associated with a corresponding adjustment coefficient for each difference interval; obtaining the difference, and selecting an adjustment coefficient corresponding to the difference interval based on a mapping relationship between the difference interval to which the difference belongs within the adjustment coefficient-difference interval correspondence relationship; and multiplying and adjusting each parameter in the inspection and maintenance plan parameters of the photovoltaic power station one by one according to the adjustment coefficient, to complete the adjustment of the inspection and maintenance plan parameters of the photovoltaic power station.

[0064] Specifically, a corresponding relationship between an adjustment coefficient and a difference interval is pre-set to ensure that each difference interval has a corresponding adjustment coefficient; the difference between the first state evaluation value and the second state evaluation value is obtained, and the difference interval to which the difference belongs is mapped in the corresponding relationship between the adjustment coefficient and the difference interval, and the adjustment coefficient corresponding to the difference interval is selected; according to the selected adjustment coefficient, each parameter in the inspection and maintenance plan parameters of the photovoltaic power station is multiplied and adjusted one by one to complete the adjustment of the inspection and maintenance plan parameters of the photovoltaic power station, which parameters include inspection frequency, cycle, and node. Through the above steps, appropriate adjustment coefficients can be selected according to the corresponding relationship between the difference interval and the adjustment coefficient, and these coefficients can be used to adjust the inspection and maintenance plan parameters of the photovoltaic power station, which is helpful to adjust the inspection and maintenance plan according to the actual state evaluation value difference, and ensure that the inspection and maintenance work can better adapt to the actual state changes of the photovoltaic power station.

[0065] like Figure 2 As shown, in an embodiment of the present application, a photovoltaic power station intelligent monitoring and operation and maintenance system is provided, including: an acquisition module, used to acquire operation monitoring data of the photovoltaic power station, and analyze the operation monitoring data to determine the state evaluation index of the photovoltaic power station; an evaluation module, used to evaluate and calculate the state of the photovoltaic power station according to the state evaluation index, and obtain a first state evaluation value of the photovoltaic power station; a judgment module, used to judge whether the photovoltaic power station meets the state requirements according to the state evaluation value, and after judging that the photovoltaic power station does not meet the state requirements, formulate the inspection and maintenance plan parameters of the photovoltaic power station according to the state evaluation value; an analysis module, used to obtain the second state evaluation value of the photovoltaic power station after the photovoltaic power station is inspected and maintained for a preset time period according to the inspection and maintenance plan parameters, and analyze the difference between the first state evaluation value and the second state evaluation value; an adjustment module, used to set an adjustment strategy according to the difference, and adjust the inspection and maintenance plan parameters of the photovoltaic power station according to the adjustment strategy.

[0066] In summary, the embodiment of the present invention provides a method and system for intelligent monitoring and operation and maintenance of a photovoltaic power station, which includes: obtaining the operation monitoring data of the photovoltaic power station, analyzing it, and determining the state evaluation index of the photovoltaic power station; evaluating and calculating the state of the photovoltaic power station according to the state evaluation index to obtain its first state evaluation value; judging whether the photovoltaic power station meets the state requirements according to the state evaluation value, and formulating the inspection and maintenance plan parameters of the photovoltaic power station according to it after judging that it does not meet the state requirements; obtaining the second state evaluation value of the photovoltaic power station after the photovoltaic power station is inspected and maintained for a preset time period according to the inspection and maintenance plan parameters, and analyzing the difference between the first state evaluation value and the second state evaluation value; setting an adjustment strategy according to the difference, and adjusting the inspection and maintenance plan parameters according to it. The present invention can make the operation and management of the photovoltaic power station more intelligent, efficient and sustainable, improve the utilization rate and reliability of photovoltaic equipment, and reduce operating costs.

[0067] 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.

[0068] 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.

[0069] 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.

[0070] 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.

[0071] 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 photovoltaic power station intelligent monitoring and operation method, characterized in that: include: Obtain the operation monitoring data of the photovoltaic power station, analyze the operation monitoring data, and determine the status evaluation indicators of the photovoltaic power station; The state of the photovoltaic power station is evaluated and calculated according to the state evaluation index to obtain a first state evaluation value of the photovoltaic power station; Determine whether the photovoltaic power station meets the status requirements according to the status evaluation value, and if it is determined that the photovoltaic power station does not meet the status requirements, formulate inspection and maintenance plan parameters for the photovoltaic power station according to the status evaluation value; Obtaining a second state evaluation value of the photovoltaic power station after the photovoltaic power station is inspected and maintained for a preset period of time according to the inspection and maintenance plan parameters, and analyzing the difference between the first state evaluation value and the second state evaluation value; An adjustment strategy is set according to the difference, and the inspection and maintenance plan parameters of the photovoltaic power station are adjusted according to the adjustment strategy.

2. A photovoltaic power station intelligent monitoring and operation method according to claim condition 1, characterized in that: The step of obtaining the operation monitoring data of the photovoltaic power station and analyzing the operation monitoring data to determine the status evaluation index of the photovoltaic power station includes: Acquire operation monitoring data of the photovoltaic power station, and divide the operation monitoring data into several parameter data groups according to parameter types; The correlation between each parameter data group and the state of the photovoltaic power station is analyzed, the parameter data group whose correlation exceeds the preset value is selected, and the parameters corresponding to the parameter data group whose correlation exceeds the preset value are used as the state evaluation index.

3. A photovoltaic power station intelligent monitoring and operation method according to claim condition 2, characterized in that: The analysis of the correlation between each parameter data group and the photovoltaic power station status includes: The status data of the photovoltaic power station is obtained, and the correlation coefficient between each parameter data group and the status data is calculated respectively, and the obtained correlation coefficient is used as the correlation degree between each parameter data group and the status of the photovoltaic power station.

4. A photovoltaic power station intelligent monitoring and operation method according to claim condition 3, characterized in that: The step of evaluating and calculating the state of the photovoltaic power station according to the state evaluation index to obtain a first state evaluation value of the photovoltaic power station includes: Preset a standard correlation coefficient and obtain the correlation coefficient between each status evaluation indicator and the status of the photovoltaic power station; Calculate the difference between each correlation coefficient and the standard correlation coefficient, and set the weight of each state evaluation indicator according to the size of the difference; Obtain the parameter data group corresponding to each state evaluation indicator, and calculate the standard deviation of each parameter data group; Evaluate and value the standard deviation of each parameter data group to obtain the state evaluation value of each state evaluation indicator; The state evaluation value corresponding to each state evaluation indicator is weightedly added to the corresponding preset weight to obtain a first state evaluation value of the photovoltaic power station.

5. A photovoltaic power station intelligent monitoring and operation method according to claim condition 3, characterized in that: The step of judging whether the photovoltaic power station meets the status requirements according to the status evaluation value, and formulating inspection and maintenance plan parameters for the photovoltaic power station according to the status evaluation value after judging that the photovoltaic power station does not meet the status requirements, includes: Preset a status assessment threshold, compare the status assessment value with the status assessment threshold, and determine whether the photovoltaic power station meets the status requirements based on the comparison result; If the status assessment value exceeds the status assessment threshold, it is judged that the photovoltaic power station meets the status requirements; If the status assessment value does not exceed the status assessment threshold, it is determined that the photovoltaic power station does not meet the status requirements; After determining that the PV power station does not meet the status requirements, the status level of the PV power station is determined according to the status evaluation value, and the inspection and maintenance frequency, inspection and maintenance cycle and inspection and maintenance nodes of the PV power station are formulated according to the status level of the PV power station.

6. A photovoltaic power station intelligent monitoring and operation method according to claim condition 5, characterized in that: The obtaining of the second state evaluation value of the photovoltaic power station after the photovoltaic power station is inspected and maintained for a preset period of time according to the inspection and maintenance plan parameters, and analyzing the difference between the first state evaluation value and the second state evaluation value, includes: After performing inspection and maintenance on the photovoltaic power station for a preset period of time according to the inspection and maintenance plan parameters, the state of the photovoltaic power station is evaluated again to obtain a second state evaluation value of the photovoltaic power station; A difference between the first state evaluation value and the second state evaluation value is calculated, and the difference is used as the difference between the first state evaluation value and the second state evaluation value.

7. A photovoltaic power station intelligent monitoring and operation method according to claim 6, characterized in that: The step of setting an adjustment strategy according to the difference and adjusting the inspection and maintenance plan parameters of the photovoltaic power station according to the adjustment strategy includes: A corresponding relationship between adjustment coefficient and difference interval is preset, and the corresponding relationship between adjustment coefficient and difference interval is associated with a corresponding adjustment coefficient for each difference interval; The difference is obtained, and based on the mapping relationship between the difference interval to which the difference belongs and the adjustment coefficient corresponding to the difference interval, an adjustment coefficient corresponding to the difference interval is selected; Each parameter in the inspection and maintenance plan parameters of the photovoltaic power station is multiplied and adjusted one by one according to the adjustment coefficient to complete the adjustment of the inspection and maintenance plan parameters of the photovoltaic power station.

8. A photovoltaic power station intelligent monitoring and operation and maintenance system, characterized in that: include: The acquisition module is used to acquire the operation monitoring data of the photovoltaic power station, analyze the operation monitoring data, and determine the status evaluation index of the photovoltaic power station; An evaluation module, used to evaluate and calculate the state of the photovoltaic power station according to the state evaluation index to obtain a first state evaluation value of the photovoltaic power station; A judgment module is used to judge whether the photovoltaic power station meets the status requirements according to the status evaluation value, and after judging that the photovoltaic power station does not meet the status requirements, formulate inspection and maintenance plan parameters of the photovoltaic power station according to the status evaluation value; An analysis module, used to obtain a second state evaluation value of the photovoltaic power station after the photovoltaic power station is inspected and maintained for a preset period of time according to the inspection and maintenance plan parameters, and to analyze the difference between the first state evaluation value and the second state evaluation value; The adjustment module is used to set an adjustment strategy according to the difference, and adjust the inspection and maintenance plan parameters of the photovoltaic power station according to the adjustment strategy.

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