Abnormality monitoring method and device based on power generation proportion of photovoltaic module, and storage medium
By obtaining the power generation data of photovoltaic components in photovoltaic power stations and calculating the proportion of power generation, it solves the difficulty of data collection and coordination that financial enterprises face when monitoring the photovoltaic power station, and achieve the convenience and efficiency of the abnormal detection of photovoltaic power stations.
Patent Information
- Application Number
- CN202411527330.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-29
- Publication Date
- 2025-01-24
AI Technical Summary
When monitoring the operation of photovoltaic power plants, financial companies face the difficulty of data collection and coordination caused by the diversity of inverter brands, which increases costs and complexity.
By obtaining the power generation data of photovoltaic modules in the photovoltaic power station, calculating the proportion of power generation in different power generation cycles, and determining abnormal power generation of photovoltaic modules, the data collection process is simplified and the cost is reduced.
The convenience and efficiency of the abnormal detection of photovoltaic power stations can be achieved, which can quickly identify changes and abnormalities in power generation efficiency, and reduce the monitoring costs of financial enterprises.
Smart Images
Figure CN119363028A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of photoelectric monitoring technology, and in particular to an abnormality monitoring method, device and storage medium based on the power generation ratio of photovoltaic modules. Background Art
[0002] When financial leasing companies, banks and other financial enterprises carry out financing business related to photovoltaic power stations, they usually need to manage the physical assets of photovoltaic power stations under the financial business and monitor whether the photovoltaic power stations are operating normally, so as to determine whether the customers have repayment risks.
[0003] At present, the operation of the photovoltaic power station inverter is mainly used to judge whether the power station is operating normally. However, there are many brands of photovoltaic inverters, and accessing photovoltaic inverter data requires coordination with many inverter manufacturers, which is difficult and costly for financial companies.
[0004] Therefore, how to improve the convenience of abnormality detection in photovoltaic power plants has become a technical problem that needs to be solved urgently. Summary of the invention
[0005] The present application provides an abnormality monitoring method, device and storage medium based on the power generation ratio of photovoltaic modules, aiming to improve the convenience of abnormality detection in photovoltaic power stations.
[0006] In a first aspect, the present application provides an abnormality monitoring method based on the proportion of photovoltaic module power generation, and the abnormality monitoring method based on the proportion of photovoltaic module power generation includes the following steps:
[0007] Acquiring first power generation data of at least one photovoltaic component in a photovoltaic power station;
[0008] Based on the first power generation data of each photovoltaic component, calculating a first power generation proportion of each photovoltaic component in a first power generation cycle;
[0009] Acquire second power generation data of each photovoltaic assembly in a second power generation cycle, wherein the second power generation cycle is shorter than the first power generation cycle;
[0010] Based on the second power generation data, calculating the second power generation proportion of each of the photovoltaic components in the second power generation cycle;
[0011] When the second power generation proportion is less than the first power generation proportion, it is determined that power generation of the photovoltaic assembly is abnormal.
[0012] In a second aspect, the present application further provides an abnormality monitoring device based on the proportion of photovoltaic module power generation, and the abnormality monitoring device based on the proportion of photovoltaic module power generation includes:
[0013] A first power generation data acquisition module, used to acquire first power generation data of at least one photovoltaic component in the photovoltaic power station;
[0014] A first power generation proportion calculation module, used for calculating a first power generation proportion of each photovoltaic component in a first power generation cycle based on the first power generation data of each photovoltaic component;
[0015] A second power generation data acquisition module, used to acquire second power generation data of each photovoltaic assembly in a second power generation cycle, wherein the second power generation cycle is shorter than the first power generation cycle;
[0016] A second power generation proportion calculation module, used for calculating a second power generation proportion of each photovoltaic module in the second power generation cycle based on the second power generation data;
[0017] The abnormality judgment module is used to determine that the power generation of the photovoltaic component is abnormal when the second power generation proportion is less than the first power generation proportion.
[0018] In a third aspect, the present application also provides a computer device, comprising a processor, a memory, and a computer program stored in the memory and executable by the processor, wherein when the computer program is executed by the processor, the steps of the above-mentioned abnormal monitoring method based on the proportion of photovoltaic module power generation are implemented.
[0019] In a fourth aspect, the present application also provides a computer-readable storage medium having a computer program stored thereon, wherein when the computer program is executed by a processor, the steps of the above-mentioned abnormality monitoring method based on the proportion of photovoltaic module power generation are implemented.
[0020] The present application provides an abnormal monitoring method, device, computer equipment and storage medium based on the proportion of photovoltaic component power generation. The method of the present application includes obtaining the first power generation data of at least one photovoltaic component in a photovoltaic power station; based on the first power generation data of each photovoltaic component, calculating the first power generation proportion of each photovoltaic component in the first power generation cycle; obtaining the second power generation data of each photovoltaic component in the second power generation cycle, wherein the second power generation cycle is less than the first power generation cycle; based on the second power generation data, calculating the second power generation proportion of each photovoltaic component in the second power generation cycle; when the second power generation proportion is less than the first power generation proportion, determining that the photovoltaic component power generation is abnormal. In the above manner, the present application simplifies the data collection process by obtaining the power generation data of a single photovoltaic component, avoiding the complexity and high cost of the power generation data collection process of multiple photovoltaic components. By calculating the power generation proportion of these components in different power generation cycles, the power generation performance of different components can be standardized, thereby quickly identifying changes in power generation efficiency, which is convenient for comparison and analysis. By comparing the power generation proportions of different cycles, the first power generation proportion calculated by the first power generation cycle with a longer cycle interval is used as a reference proportion, and then the power generation efficiency of the second power generation proportion of the photovoltaic module in the second power generation cycle within a short cycle is judged. Photovoltaic modules with abnormal power generation can be quickly identified, thereby improving the convenience and efficiency of abnormal detection in photovoltaic power stations. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0022] Figure 1 A schematic flow chart of a first embodiment of an abnormal monitoring method based on photovoltaic module power generation ratio provided by the present application;
[0023] Figure 2 A schematic diagram of the power generation data collection structure of each photovoltaic module of a photovoltaic power station provided in an embodiment of the present application;
[0024] Figure 3 A schematic diagram of a photovoltaic module abnormality determination process provided in an embodiment of the present application;
[0025] Figure 4 It is a structural schematic diagram of a first embodiment of an abnormal monitoring device based on photovoltaic module power generation ratio provided by the present application;
[0026] Figure 5 It is a schematic block diagram of the structure of a computer device provided in an embodiment of the present application.
[0027] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION
[0028] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.
[0029] The flowcharts shown in the accompanying drawings are only examples and do not necessarily include all the contents and operations / steps, nor must they be executed in the order described. For example, some operations / steps may also be decomposed, combined or partially merged, so the actual execution order may change according to actual conditions.
[0030] In conjunction with the accompanying drawings, some embodiments of the present application are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.
[0031] Please refer to Figure 1 , Figure 1 A schematic flow chart of a first embodiment of an abnormality monitoring method based on photovoltaic module power generation ratio provided in the present application.
[0032] like Figure 1 As shown, the abnormality monitoring method based on the power generation ratio of photovoltaic modules includes steps S101 to S105.
[0033] S101, obtaining first power generation data of at least one photovoltaic component in a photovoltaic power station;
[0034] In one embodiment, if Figure 2 As shown, in a photovoltaic power station, each photovoltaic module can be equipped with a photovoltaic power meter to record and display the power generation data of the photovoltaic module, and then the power generation data of the photovoltaic power meter is collected by a data collector as the first power generation data of each photovoltaic module. In this way, the power generation data of each photovoltaic module can be collected and monitored separately, making the first power generation data of the photovoltaic module more accurate.
[0035] Exemplarily, the data collector may be an image sensor, a data reading device, etc. The data collector also needs to be equipped with a communication component to facilitate transmission of the collected first power generation data to the service end.
[0036] In one embodiment, each photovoltaic component in a photovoltaic power station uniquely corresponds to a photovoltaic power meter, and each photovoltaic power meter can uniquely correspond to a data collector. Therefore, the photovoltaic components, photovoltaic power meters and data collectors in the same group can be coded and sorted, and given unique identification marks, such as identification codes, data codes, etc.
[0037] In one embodiment, the first power generation data includes the total power generation, peak power generation, peak power generation, normal power generation and valley power generation of the photovoltaic assembly in the first power generation cycle.
[0038] For example, the first power generation cycle may be a photovoltaic power station in a relatively long period of time, such as a week, a month, a quarter, or a year, etc. The value may be determined according to actual needs.
[0039] In one embodiment, the first power generation data of the photovoltaic power station power meter is collected, and the first power generation data includes total power generation, peak time power generation, peak time power generation, normal time power generation, and valley time power generation. Usually, a power meter can carry a maximum photovoltaic panel capacity of 400KW. For example, a 1000KW photovoltaic power station requires 3 power meters.
[0040] Specifically, the total power generation is an indicator that measures the total amount of electricity generated by a photovoltaic power station in the first power generation cycle (such as a week, a month or a year), which can be obtained by cumulative calculation.
[0041] Specifically, peak-period power generation refers to the power generation during the period of the day when solar radiation is strongest, temperature is highest, and electricity demand reaches its peak (such as noon to afternoon).
[0042] Specifically, the peak-time power generation refers to the power generation during the period of time when the power demand is higher (such as morning or evening) except for the peak period.
[0043] Specifically, the normal period power generation refers to the power generation during a period when the power demand is relatively stable within the first power generation cycle.
[0044] Specifically, off-peak power generation refers to power generation at night or during periods when solar radiation is weakest, when electricity demand is generally lower.
[0045] In one embodiment, the data collector in the photovoltaic power station can periodically collect and record the first power generation data of the photovoltaic module, for example, collect data every fifteen minutes, and then send the first power generation data collected on that day to the server every day, or send the data to the server every time it is collected, and the server performs statistics and storage, etc. In addition, the photovoltaic module number, collection time and other information corresponding to each collected first power generation data are marked, and when these data need to be referenced, data can be queried and called according to the photovoltaic module number and data collection time.
[0046] S102, calculating a first power generation proportion of each photovoltaic component in a first power generation cycle based on the first power generation data of each photovoltaic component;
[0047] In one embodiment, the proportion of each photovoltaic meter in the components is calculated when the power station is operating normally. For example, a 1000KW photovoltaic power station has 3 photovoltaic power meters (behind each photovoltaic power meter is a group of photovoltaic power generation panels, and the power generation of these photovoltaic power generation panels will be measured by the photovoltaic power meter to measure the total power generation of this batch of photovoltaic components). Usually, when the power station is just built, the power station operation is normal. At the same time, if a photovoltaic power station is under the same sky and the power station has been operating normally, the proportion of the power generation of each photovoltaic power meter in the total power generation is basically the same. In order to reduce the problem of small overall power generation due to rainy days, resulting in large deviations in the calculated proportion, the power generation over a period of time can be selected to calculate the component proportion.
[0048] Furthermore, based on the first power generation data of each of the photovoltaic components, the first total power generation of each of the photovoltaic components in the photovoltaic power station within the first power generation cycle is calculated; the ratio of the first power generation data of each of the photovoltaic components to the first total power generation is calculated respectively to obtain the first power generation proportion corresponding to each of the photovoltaic components.
[0049] For example, assuming that the first power generation cycle is seven days, the first power generation ratio corresponding to photovoltaic module n is:
[0050]
[0051] Among them, Q n,i represents the power generation of PV module n on the i-th day, Q j It represents the total power generation of the jth photovoltaic module in the first power generation cycle. It represents the first total power generation of all photovoltaic modules in the first power generation cycle, which is the sum of the total power generation of each photovoltaic module in the first power generation cycle. It refers to the total power generation of photovoltaic module n in the first power generation cycle.
[0052] S103, obtaining second power generation data of each photovoltaic module in a second power generation cycle, wherein the second power generation cycle is shorter than the first power generation cycle;
[0053] In one embodiment, the second power generation data includes the total power generation of the photovoltaic assembly in the second power generation cycle, the power generation during the peak period, the power generation during the peak period, the power generation during the normal period, and the power generation during the valley period.
[0054] Furthermore, the time range information of the second power generation cycle and the component identification information of each photovoltaic component are obtained; based on the time range information and the component identification information, data query information is generated; based on the data query information, the second power generation data matching the data query information is queried from a database.
[0055] In one embodiment, first, the second power generation cycle is determined, that is, the time range for abnormal detection, such as the current day, a certain day in history, a certain period of time, etc. It can be understood that the first power generation ratio is used as a reference value. To ensure the accuracy of the reference value, the second power generation cycle needs to be smaller than the first power generation cycle and can have a larger time range difference. For example, the first power generation cycle is one week, and the second power generation cycle can be one day, or several hours, etc.
[0056] In one embodiment, the power generation data of the photovoltaic module can be stored in a database, and each power generation data can be marked, and the marking information can include the unique identification information of the photovoltaic module, the data collection time, etc. Then, when necessary, according to the unique identification information of the photovoltaic module (such as ID, device number, etc.) and the time period of the power generation data that needs to be detected for abnormality, a query statement is written to query the corresponding second power generation data in the database.
[0057] It can be understood that the first power generation data can also be acquired in the same manner.
[0058] S104, calculating a second power generation proportion of each of the photovoltaic modules in the second power generation cycle based on the second power generation data;
[0059] In one embodiment, based on the second power generation data of each photovoltaic component and the first power generation ratio, the equivalent power generation of each photovoltaic component in the second power generation cycle is calculated; the equivalent power generation corresponding to each photovoltaic component is compared, and the maximum equivalent power generation is determined to be the standard power generation.
[0060] Generally, the actual power generation of photovoltaic modules is affected by many factors, including weather conditions, temperature, shadows, dust accumulation, equipment aging, etc. These factors may cause the actual power generation to be lower than the maximum theoretical power generation of photovoltaic modules under ideal conditions.
[0061] In one embodiment, equivalent power generation refers to the amount of electricity that a photovoltaic module should generate under standard or expected power generation conditions. It is calculated based on the actual power generation of the photovoltaic module and its power generation proportion to reflect the power generation performance of the photovoltaic module under non-ideal conditions.
[0062] In one embodiment, the concept of equivalent power generation is used to evaluate the power generation performance of a photovoltaic power plant or its individual photovoltaic modules under specific conditions and compare it with the standard or expected power generation performance. The equivalent power generation takes into account the difference between the actual power generation capacity and the theoretical maximum power generation capacity of the photovoltaic module, as well as the performance changes over different time periods.
[0063] In one embodiment, for each PV meter (representing a group of PV modules), its equivalent power generation is calculated, which is obtained by dividing the power generation of the PV meter in the second power generation cycle by its power generation proportion in the first power generation cycle.
[0064] Specifically, the calculation formula of equivalent power generation can be expressed as:
[0065]
[0066] In one embodiment, the standard power generation of the photovoltaic power station in the second power generation cycle is the maximum value of the equivalent power generation of all photovoltaic meters in the second power generation cycle, that is, the maximum value of the equivalent power generation of all photovoltaic meters is taken as the standard power generation of the power station.
[0067] Specifically, the standard power generation of the photovoltaic power station in the second power generation cycle can be expressed as:
[0068] The standard power generation of a photovoltaic power station = the maximum value of the equivalent power generation of all photovoltaic modules
[0069] Furthermore, based on the second power generation data of each of the photovoltaic components and the first power generation proportion, the standard power generation of the photovoltaic power station in the second power generation cycle is calculated; based on the second power generation data of each of the photovoltaic components and the standard power generation, the second power generation proportion corresponding to each of the photovoltaic components is calculated.
[0070] In one embodiment, the power generation proportion of each photovoltaic meter in the second power generation cycle can be calculated by dividing the power generation of the photovoltaic meter in the second power generation cycle by the normal power generation of the power station on that day.
[0071] Specifically, the standard power generation refers to the amount of electricity that a photovoltaic power station should generate under certain conditions. This specific condition can be the expected power generation based on the first power generation ratio. The second power generation ratio refers to the proportion of the power generation of the photovoltaic module in the second power generation cycle to the standard power generation.
[0072] Exemplarily, the second power generation proportion of each photovoltaic meter can be calculated by the following formula:
[0073]
[0074] That is, the power generation of each photovoltaic meter in the second power generation cycle is calculated by dividing the power generation of the photovoltaic meter in the second power generation cycle by the standard power generation of the photovoltaic power station in the second power generation cycle. The standard power generation can be understood as the expected power generation of the photovoltaic power station under standard conditions.
[0075] S105: When the second power generation proportion is less than the first power generation proportion, determining that power generation of the photovoltaic assembly is abnormal.
[0076] In one embodiment, if Figure 3 As shown, the current proportion is the second power generation proportion, and the actual proportion is the first power generation proportion. If the second power generation proportion of the photovoltaic module in the second power generation cycle is the same as or very close to the first power generation proportion of the first power generation cycle, it indicates that the power generation performance of the photovoltaic module is consistent in the two time periods, and it can be considered that its power generation is normal.
[0077] In one embodiment, if the second power generation ratio corresponding to a photovoltaic component is less than the first power generation ratio corresponding to it, it means that in the second power generation cycle, the photovoltaic component fails to provide sufficient power generation and the power generation efficiency of the photovoltaic component decreases. Therefore, it can be determined that the photovoltaic component may be abnormal, for example, due to aging, damage, shading, dirt accumulation, high temperature or other environmental factors of the photovoltaic component.
[0078] Exemplarily, abnormalities of PV modules may include, but are not limited to, physical damage or aging of PV panels, obstruction of PV panels (such as dust, bird droppings, vegetation growth), electrical connection problems such as poor wiring or junction box failure, and environmental factors such as excessive temperature or changes in lighting conditions.
[0079] For example, for photovoltaic modules that are judged to be abnormal, an inspection and diagnosis task can be established to conduct a more detailed inspection and diagnosis of the abnormal photovoltaic modules to determine the specific problem. Based on the diagnosis results, necessary maintenance and repair measures are collected, such as cleaning photovoltaic panels, repairing or replacing damaged modules, etc. After taking measures, the performance of photovoltaic modules continues to be monitored to ensure that the power generation efficiency returns to normal and prevent future abnormalities.
[0080] In another embodiment, based on the second power generation ratio and the first power generation ratio, the power generation ratio deviation of the photovoltaic component is calculated; when the power generation ratio deviation is greater than a preset ratio deviation threshold, it is determined that the photovoltaic component has power generation abnormality.
[0081] In one embodiment, the preset ratio deviation threshold can be set based on historical data, experience or performance standards of the photovoltaic power plant. The setting of the ratio deviation threshold should take into account changes in normal operating conditions, such as seasonal changes, weather changes, etc.
[0082] In one embodiment, the power generation ratio deviation refers to the difference between the power generation ratio of the photovoltaic assembly in the second power generation cycle and the power generation ratio of the photovoltaic assembly in the first power generation cycle.
[0083] Exemplarily, the calculation formula of the power generation ratio deviation of photovoltaic module n can be expressed as:
[0084]
[0085] If the calculated power generation share deviation is greater than the preset share deviation threshold, this indicates that the power generation performance of the photovoltaic module in the second power generation cycle is significantly lower than its performance in the first power generation cycle, and it can be judged that the photovoltaic module may be abnormal.
[0086] The present embodiment provides an abnormal monitoring method based on the proportion of photovoltaic module power generation. The present application method simplifies the data collection process by obtaining the power generation data of a single photovoltaic module, avoiding the complexity and high cost of the power generation data collection process of multiple photovoltaic modules. By calculating the power generation proportion of these components in different power generation cycles, the power generation performance of different components can be standardized, so as to quickly identify the changes in power generation efficiency, which is convenient for comparison and analysis. By comparing the power generation proportions of different cycles, the first power generation proportion calculated in the first power generation cycle with a longer cycle interval is used as the reference proportion, and then the power generation efficiency of the second power generation proportion of the photovoltaic module in the second power generation cycle within a short cycle is judged, which can quickly identify photovoltaic modules with abnormal power generation, thereby improving the convenience and efficiency of abnormal detection of photovoltaic power stations.
[0087] See also Figure 4 , Figure 4 It is a structural schematic diagram of a first embodiment of an abnormality monitoring device based on the proportion of power generation of photovoltaic modules provided in the present application. The abnormality monitoring device based on the proportion of power generation of photovoltaic modules is used to execute the aforementioned abnormality monitoring method based on the proportion of power generation of photovoltaic modules.
[0088] like Figure 4 As shown, the abnormality monitoring device 200 based on the power generation proportion of photovoltaic components includes: a first power generation data acquisition module 201, a first power generation proportion calculation module 202, a second power generation data acquisition module 203, a second power generation proportion calculation module 204 and an abnormality judgment module 205.
[0089] The first power generation data acquisition module 201 is used to acquire first power generation data of at least one photovoltaic component in the photovoltaic power station;
[0090] A first power generation proportion calculation module 202, configured to calculate a first power generation proportion of each photovoltaic component in a first power generation cycle based on the first power generation data of each photovoltaic component;
[0091] A second power generation data acquisition module 203 is used to acquire second power generation data of each photovoltaic module in a second power generation cycle, wherein the second power generation cycle is shorter than the first power generation cycle;
[0092] A second power generation proportion calculation module 204, configured to calculate a second power generation proportion of each of the photovoltaic modules in the second power generation cycle based on the second power generation data;
[0093] The abnormality judgment module 205 is used to determine that the power generation of the photovoltaic assembly is abnormal when the second power generation proportion is less than the first power generation proportion.
[0094] In one embodiment, the first power generation proportion calculation module 202 includes:
[0095] A first total power generation calculation unit, configured to calculate a first total power generation of each photovoltaic component in the photovoltaic power station within the first power generation cycle based on the first power generation data of each photovoltaic component;
[0096] The first power generation ratio calculation unit is used to respectively calculate the ratio of the first power generation data of each photovoltaic component to the first total power generation, and obtain the first power generation ratio corresponding to each photovoltaic component.
[0097] In one embodiment, the second power generation proportion calculation module 204 includes:
[0098] A standard power generation calculation unit, configured to calculate a standard power generation of the photovoltaic power station in the second power generation cycle based on the second power generation data of each photovoltaic module and the first power generation ratio;
[0099] The second power generation proportion calculation unit is used to calculate the second power generation proportion corresponding to each photovoltaic component based on the second power generation data of each photovoltaic component and the standard power generation.
[0100] In one embodiment, the standard power generation calculation unit includes:
[0101] an equivalent power generation calculation subunit, configured to calculate the equivalent power generation of each photovoltaic module in the second power generation cycle based on the second power generation data of each photovoltaic module and the first power generation proportion;
[0102] The standard power generation determination subunit is used to compare the equivalent power generation corresponding to each photovoltaic module and determine the maximum equivalent power generation as the standard power generation.
[0103] In one embodiment, the abnormality determination module 205 further includes:
[0104] A power generation ratio deviation calculation unit, used for the power generation ratio deviation determination unit, for calculating the power generation ratio deviation of the photovoltaic module based on the second power generation ratio and the first power generation ratio;
[0105] The abnormality identification unit is used to determine that the photovoltaic component has power generation abnormality when the power generation ratio deviation is greater than a preset ratio deviation threshold.
[0106] In one embodiment, the first power generation data includes the total power generation of the photovoltaic assembly in the first power generation cycle, the power generation during the peak period, the power generation during the peak period, the power generation during the normal period, and the power generation during the valley period;
[0107] The second power generation data includes the total power generation of the photovoltaic component in the second power generation cycle, the power generation during the peak period, the power generation during the peak period, the power generation during the normal period, and the power generation during the off-peak period.
[0108] In one embodiment, the second power generation data acquisition module 203 includes:
[0109] An information acquisition unit, used to acquire time range information of the second power generation cycle and component identification information of each photovoltaic component;
[0110] A query information generating unit, configured to generate data query information based on the time range information and the component identification information;
[0111] A data query unit is used to query the second power generation data matching the data query information from a database based on the data query information.
[0112] It should be noted that technicians in the relevant field can clearly understand that for the convenience and simplicity of description, the specific working process of the above-described device and each module can refer to the corresponding process in the aforementioned abnormal monitoring method embodiment based on the power generation ratio of photovoltaic components, and will not be repeated here.
[0113] The apparatus provided in the above embodiment may be implemented in the form of a computer program. The computer program may be Figure 5 Runs on the computer device shown.
[0114] See also Figure 5 , Figure 5 1 is a schematic block diagram of a computer device provided in an embodiment of the present application. The computer device may be a server.
[0115] See also Figure 5 The computer device includes a processor, a memory and a network interface connected through a system bus, wherein the memory may include a non-volatile storage medium and an internal memory.
[0116] The non-volatile storage medium can store an operating system and a computer program. The computer program includes program instructions, and when the program instructions are executed, the processor can execute any abnormality monitoring method based on the power generation ratio of photovoltaic components.
[0117] The processor is used to provide computing and control capabilities and support the operation of the entire computer equipment.
[0118] The internal memory provides an environment for the operation of the computer program in the non-volatile storage medium. When the computer program is executed by the processor, the processor can execute any abnormality monitoring method based on the power generation ratio of the photovoltaic components.
[0119] The network interface is used for network communication, such as sending assigned tasks, etc. Those skilled in the art will understand that Figure 5 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.
[0120] It should be understood that the processor may be a central processing unit (CPU), and the processor may also be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. Among them, the general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.
[0121] In one embodiment, the processor is used to run a computer program stored in the memory to implement the following steps:
[0122] Acquiring first power generation data of at least one photovoltaic component in a photovoltaic power station;
[0123] Based on the first power generation data of each photovoltaic component, calculating a first power generation proportion of each photovoltaic component in a first power generation cycle;
[0124] Acquire second power generation data of each photovoltaic assembly in a second power generation cycle, wherein the second power generation cycle is shorter than the first power generation cycle;
[0125] Based on the second power generation data, calculating the second power generation proportion of each of the photovoltaic components in the second power generation cycle;
[0126] When the second power generation proportion is less than the first power generation proportion, it is determined that power generation of the photovoltaic assembly is abnormal.
[0127] In one embodiment, when the processor calculates the first power generation proportion of each photovoltaic component in the first power generation cycle based on the first power generation data of each photovoltaic component, it is used to implement:
[0128] Calculating a first total power generation of each photovoltaic component in the photovoltaic power station within the first power generation cycle based on the first power generation data of each photovoltaic component;
[0129] The ratio of the first power generation data of each photovoltaic component to the first total power generation is calculated respectively to obtain the first power generation proportion corresponding to each photovoltaic component.
[0130] In one embodiment, when the processor calculates the second power generation proportion of each photovoltaic component in the second power generation cycle based on the second power generation data, it is used to implement:
[0131] Calculating a standard power generation of the photovoltaic power station in the second power generation cycle based on the second power generation data of each of the photovoltaic components and the first power generation ratio;
[0132] Based on the second power generation data of each photovoltaic component and the standard power generation, the second power generation proportion corresponding to each photovoltaic component is calculated.
[0133] In one embodiment, when the processor calculates the standard power generation of the photovoltaic power station in the second power generation cycle based on the second power generation data of each photovoltaic component and the first power generation proportion, it is used to implement:
[0134] Calculating the equivalent power generation of each photovoltaic component in the second power generation cycle based on the second power generation data of each photovoltaic component and the first power generation proportion;
[0135] The equivalent power generation corresponding to each of the photovoltaic modules is compared to determine the maximum equivalent power generation as the standard power generation.
[0136] In one embodiment, after calculating the second power generation proportion of each photovoltaic component in the second power generation cycle based on the second power generation data, the processor is further configured to implement:
[0137] Calculating a power generation ratio deviation of the photovoltaic module based on the second power generation ratio and the first power generation ratio;
[0138] When the power generation proportion deviation is greater than a preset proportion deviation threshold, it is determined that the photovoltaic assembly has power generation abnormality.
[0139] In one embodiment, the first power generation data includes the total power generation of the photovoltaic assembly in the first power generation cycle, the power generation during the peak period, the power generation during the peak period, the power generation during the normal period, and the power generation during the valley period;
[0140] The second power generation data includes the total power generation of the photovoltaic component in the second power generation cycle, the power generation during the peak period, the power generation during the peak period, the power generation during the normal period, and the power generation during the off-peak period.
[0141] In one embodiment, when the processor is performing the acquiring of the second power generation data of each photovoltaic component in the second power generation cycle, it is used to implement:
[0142] Acquiring time range information of the second power generation cycle and component identification information of each photovoltaic component;
[0143] generating data query information based on the time range information and the component identification information;
[0144] Based on the data query information, the second power generation data matching the data query information is queried from a database.
[0145] A computer-readable storage medium is also provided in an embodiment of the present application, wherein the computer-readable storage medium stores a computer program, wherein the computer program includes program instructions, and the processor executes the program instructions to implement any one of the abnormal monitoring methods based on the proportion of photovoltaic component power generation provided in the embodiments of the present application.
[0146] The computer-readable storage medium may be an internal storage unit of the computer device described in the foregoing embodiment, such as a hard disk or memory of the computer device. The computer-readable storage medium may also be an external storage device of the computer device, such as a plug-in hard disk, a smart memory card (SmartMedia Card, SMC), a secure digital (Secure Digital, SD) card, a flash card (Flash Card), etc., equipped on the computer device.
[0147] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in the present application, and these modifications or replacements should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.
Claims
1. A method for monitoring abnormality based on the proportion of photovoltaic module power generation, characterized in that: The method comprises: Acquiring first power generation data of at least one photovoltaic component in a photovoltaic power station; Based on the first power generation data of each photovoltaic component, calculating a first power generation proportion of each photovoltaic component in a first power generation cycle; Acquire second power generation data of each photovoltaic assembly in a second power generation cycle, wherein the second power generation cycle is shorter than the first power generation cycle; Based on the second power generation data, calculating the second power generation proportion of each of the photovoltaic components in the second power generation cycle; When the second power generation proportion is less than the first power generation proportion, it is determined that power generation of the photovoltaic assembly is abnormal.
2. The abnormal monitoring method based on the proportion of photovoltaic module power generation according to claim 1 is characterized in that: The calculating, based on the first power generation data of each photovoltaic assembly, a first power generation proportion of each photovoltaic assembly in a first power generation cycle includes: Calculating a first total power generation of each photovoltaic component in the photovoltaic power station within the first power generation cycle based on the first power generation data of each photovoltaic component; The ratio of the first power generation data of each photovoltaic component to the first total power generation is calculated respectively to obtain the first power generation proportion corresponding to each photovoltaic component.
3. The abnormal monitoring method based on the proportion of photovoltaic module power generation according to claim 1 is characterized in that: The calculating, based on the second power generation data, the second power generation proportion of each photovoltaic module in the second power generation cycle includes: Calculating a standard power generation of the photovoltaic power station in the second power generation cycle based on the second power generation data of each of the photovoltaic components and the first power generation ratio; Based on the second power generation data of each photovoltaic component and the standard power generation, the second power generation proportion corresponding to each photovoltaic component is calculated.
4. The abnormal monitoring method based on the proportion of photovoltaic module power generation according to claim 3 is characterized in that: The calculating, based on the second power generation data of each photovoltaic module and the first power generation proportion, the standard power generation of the photovoltaic power station in the second power generation cycle includes: Calculating the equivalent power generation of each photovoltaic component in the second power generation cycle based on the second power generation data of each photovoltaic component and the first power generation proportion; The equivalent power generation corresponding to each of the photovoltaic modules is compared to determine the maximum equivalent power generation as the standard power generation.
5. The abnormal monitoring method based on the proportion of photovoltaic module power generation according to claim 1 is characterized in that: After calculating the second power generation proportion of each photovoltaic module in the second power generation cycle based on the second power generation data, the method further includes: Calculating a power generation ratio deviation of the photovoltaic module based on the second power generation ratio and the first power generation ratio; When the power generation proportion deviation is greater than a preset proportion deviation threshold, it is determined that the photovoltaic assembly has power generation abnormality.
6. The abnormal monitoring method based on the proportion of photovoltaic module power generation according to claim 1 is characterized in that: The first power generation data includes the total power generation of the photovoltaic assembly in the first power generation cycle, the power generation during the peak period, the power generation during the peak period, the power generation during the normal period, and the power generation during the off-peak period; The second power generation data includes the total power generation of the photovoltaic component in the second power generation cycle, the power generation during the peak period, the power generation during the peak period, the power generation during the normal period, and the power generation during the off-peak period.
7. The abnormal monitoring method based on the proportion of photovoltaic module power generation according to claim 1 is characterized in that: The obtaining of the second power generation data of each photovoltaic assembly in the second power generation cycle includes: Acquiring time range information of the second power generation cycle and component identification information of each photovoltaic component; generating data query information based on the time range information and the component identification information; Based on the data query information, the second power generation data matching the data query information is queried from a database.
8. An abnormal monitoring device based on the proportion of photovoltaic module power generation, characterized in that: The abnormal monitoring device based on the proportion of photovoltaic module power generation includes: A first power generation data acquisition module, used to acquire first power generation data of at least one photovoltaic component in the photovoltaic power station; A first power generation proportion calculation module, used for calculating a first power generation proportion of each photovoltaic component in a first power generation cycle based on the first power generation data of each photovoltaic component; A second power generation data acquisition module, used to acquire second power generation data of each photovoltaic assembly in a second power generation cycle, wherein the second power generation cycle is shorter than the first power generation cycle; A second power generation proportion calculation module, used for calculating a second power generation proportion of each photovoltaic module in the second power generation cycle based on the second power generation data; The abnormality judgment module is used to determine that the power generation of the photovoltaic component is abnormal when the second power generation proportion is less than the first power generation proportion.
9. A computer device, characterized in that: The computer device includes a processor, a memory, and a computer program stored in the memory and executable by the processor, wherein when the computer program is executed by the processor, the steps of the abnormal monitoring method based on the power generation proportion of photovoltaic components as described in any one of claims 1 to 7 are implemented.
10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, wherein when the computer program is executed by a processor, the steps of the abnormality monitoring method based on the power generation proportion of photovoltaic components as described in any one of claims 1 to 7 are implemented.