Economic benefit analysis and evaluation method based on fishing and light integration

Abstract

The invention is suitable for the technical field of fishing and light integration technology, and provides a fishing and light integration-based economic benefit analysis and evaluation method, which comprises the following steps of: obtaining a preliminary photovoltaic power generation benefit evaluation value of a photovoltaic region in a target fishing and light integration field in a project benefit evaluation period, and monitoring video data and historical operation logs of the photovoltaic region in a project benefit evaluation period are synchronously collected. The specific influence of the actual illumination condition on the photovoltaic power generation benefit can be reflected more accurately by combining two adjustment methods of the illumination duration deviation index and the illumination shielding influence index. According to the illumination duration deviation index, through quantifying the deviation between the actual illumination duration and the standard illumination duration, the initial benefit can be reasonably adjusted according to the condition of insufficient or excessive illumination, so that the excessive optimistic or pessimistic evaluation is avoided, and the benefit evaluation value is ensured to be closer to the actual power generation capacity.

Description

Technical Field

[0001] The present invention belongs to the technical field of integrated fish-photovoltaic technology, and in particular relates to an economic benefit analysis and evaluation method based on integrated fish-photovoltaic technology. Background Art

[0002] Integrated fishery and photovoltaic technology is an innovative renewable energy solution that combines fisheries and photovoltaic power generation. By installing photovoltaic modules on or around water surfaces, not only can large areas of water be effectively utilized for solar power generation, but the shading effect of photovoltaic power stations on water bodies can also be used to improve the aquaculture environment, achieving the dual benefits of "fishing and light." This technology is widely used in projects that combine photovoltaic power generation and aquaculture. It has the advantages of saving land and water, and improving resource utilization, and has become an important development direction in modern agriculture and new energy. However, the economic benefit evaluation of existing integrated fishery and photovoltaic projects mostly relies on traditional evaluation methods, which usually only consider theoretical lighting conditions and simplified photovoltaic power generation calculation models. They lack accurate corrections for fluctuations in sunlight duration and shading factors. As a result, the benefit evaluation results may deviate from the actual situation, affecting investment decisions and the economic feasibility of the project.

[0003] In existing technologies, photovoltaic power generation benefit assessments are usually based on standard sunshine duration data and simple meteorological models to predict power generation. However, lighting conditions are not always stable, and meteorological factors such as clouds, haze, and terrain features can have a significant impact on the actual sunshine duration received by photovoltaic panels. Therefore, traditional assessment methods often underestimate or overestimate the impact of actual lighting conditions on power generation benefits, resulting in a lack of accuracy in benefit assessment results. In addition, photovoltaic panels in integrated fish-light projects may also be affected by physical obstructions such as buildings and trees. These obstructions will cause some areas of the photovoltaic panels to be unable to effectively receive sunlight during certain periods, thereby affecting power generation efficiency. Existing technologies have not yet been able to fully quantify the actual impact of the obstruction area and obstruction duration of photovoltaic panels on power generation benefits, resulting in low precision and incompleteness in photovoltaic power generation benefit assessments. Summary of the Invention

[0004] The purpose of the present invention is to provide an economic benefit analysis and evaluation method based on integrated fish-light system, aiming to solve the problems raised in the background technology.

[0005] The present invention is implemented by a method for analyzing and evaluating the economic benefits of integrated fish-solar power generation, the method comprising:

[0006] Obtain preliminary photovoltaic power generation benefit assessment values ​​for the photovoltaic area within the target integrated fishery-solar site during the project benefit assessment period, and simultaneously collect monitoring video data and historical operation logs for the photovoltaic area during the project benefit assessment period;

[0007] Based on the historical operation logs of the target integrated fishery-photovoltaic field during the project benefit evaluation period, the sunshine duration deviation index of the photovoltaic area during the benefit evaluation period is calculated;

[0008] Analyze the monitoring video data of the photovoltaic area of ​​the target integrated fishery photovoltaic field during the project benefit evaluation period, and evaluate and calculate the light shielding impact index of the photovoltaic area;

[0009] Combined with the sunshine duration deviation index and the sunshine shielding impact index, the preliminary photovoltaic power generation benefit assessment value was revised twice to obtain the final photovoltaic power generation benefit assessment value.

[0010] As a further limitation of the technical solution of the embodiment of the present invention, the historical operation log includes the effective sunshine duration of the photovoltaic area. The effective sunshine duration refers to the period during which the photovoltaic panels in the photovoltaic area actually receive sunlight, excluding invalid sunshine duration caused by cloud cover, cloudy days or other meteorological factors.

[0011] As a further limitation of the technical solution of the embodiment of the present invention, the step of calculating the sunshine duration deviation index of the photovoltaic area within the benefit evaluation period based on the historical operation log of the target integrated fishery photovoltaic field within the project benefit evaluation period includes:

[0012] Extract the effective total sunshine duration of the photovoltaic area from the historical operation log of the target integrated fishery photovoltaic field during the project benefit evaluation period;

[0013] Obtain the standard total sunshine duration of the photovoltaic area of ​​the target integrated fishery photovoltaic field during the project benefit evaluation period;

[0014] According to the calculation formula of sunshine duration deviation, combined with the effective total sunshine duration and standard total sunshine duration of the photovoltaic area, the sunshine duration deviation index of the photovoltaic area during the project benefit evaluation period is calculated.

[0015] As a further limitation of the technical solution of the embodiment of the present invention, the calculation formula for the illumination duration deviation is: Among them D light Refers to the light duration deviation index, L actual Refers to the total effective sunshine duration, L std Refers to the standard total sunshine duration.

[0016] As a further limitation of the technical solution of the embodiment of the present invention, the steps of analyzing monitoring video data of the photovoltaic area of ​​the target integrated fishery-photovoltaic field during the project benefit evaluation period and evaluating and calculating the light shielding impact index of the photovoltaic area include:

[0017] Obtain monitoring video data of the photovoltaic area of ​​the target integrated fishery photovoltaic field during the project benefit evaluation period;

[0018] Through intelligent analysis technology, the monitoring video data is processed to identify the occlusion of photovoltaic panels, search for occlusion factors that affect the illumination of photovoltaic panels, and record the occlusion area and corresponding duration of each occlusion event;

[0019] The light blocking impact index calculation formula is called, and the blocking area and duration of all blocking events are combined to comprehensively calculate the light blocking impact index of the photovoltaic area during the project benefit evaluation period.

[0020] As a further limitation of the technical solution of the embodiment of the present invention, the calculation formula of the light shading impact index is: Among them D shadow Refers to the light occlusion impact index, n refers to the total number of occlusion events, A i Refers to the occlusion area of ​​the i-th occlusion event, A total Refers to the total area of ​​PV panels, T i Refers to the duration of the i-th occlusion event, T total Refers to the total duration of the project benefit evaluation cycle.

[0021] As a further limitation of the technical solution of the embodiment of the present invention, the steps of performing two corrections on the preliminary photovoltaic power generation benefit evaluation value in combination with the light duration deviation index and the light shielding impact index to obtain the final photovoltaic power generation benefit evaluation value include:

[0022] Multiply the preliminary photovoltaic power generation benefit assessment value by the sunshine duration deviation index to obtain the secondary photovoltaic power generation benefit assessment value;

[0023] The secondary photovoltaic power generation benefit assessment value is multiplied by the light shielding impact index to obtain the final photovoltaic power generation benefit assessment value.

[0024] First, combining the two adjustment methods of the sunshine duration deviation index and the sunshine shading impact index can more accurately reflect the specific impact of actual lighting conditions on the benefits of photovoltaic power generation. The sunshine duration deviation index quantifies the deviation between the actual sunshine duration and the standard sunshine duration, and can reasonably adjust the preliminary benefits according to insufficient or excessive sunshine conditions, avoid overly optimistic or overly pessimistic assessments, and ensure that the benefit assessment value is closer to the actual power generation capacity. Secondly, the sunshine shading impact index further considers the impact of shading factors on photovoltaic panels, especially physical shading in the environment (such as buildings, trees, etc.) may cause photovoltaic panels to be unable to effectively receive sunlight part of the time. By quantifying the shading area and shading duration, the benefit assessment value can be accurately adjusted to ensure that the assessment results under different environmental conditions are more reliable.

[0025] The effective combination of these two adjustment mechanisms not only significantly improves the accuracy of benefit assessments, but also provides project managers with more reliable and accurate economic forecasts, helping them better assess the actual economic benefits of photovoltaic power generation projects. Through this approach, project managers can make more scientific and reasonable decisions based on actual operating data, optimize operation and maintenance strategies, and improve return on investment.

[0026] Furthermore, the widespread application of this assessment method will enable the photovoltaic industry to conduct more accurate economic assessments in response to changing climate conditions and complex terrain environments, improving the efficiency of project investment decisions and ultimately optimizing resource allocation and utilization. Ultimately, this will not only help promote the sustainable development of the photovoltaic industry but also contribute positively to the global energy transition and the development of a green economy. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A flowchart of a method provided by an embodiment of the present invention;

[0028] Figure 2 A flow chart of calculating the illumination duration deviation index in the method provided in an embodiment of the present invention;

[0029] Figure 3 A flowchart of calculating the light occlusion impact index in the method provided in an embodiment of the present invention;

[0030] Figure 4 This is a flow chart of obtaining the final photovoltaic power generation benefit evaluation value in the method provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0032] Figure 1 A flow chart of a method provided by an embodiment of the present invention is shown.

[0033] Specifically, the economic benefit analysis and evaluation method based on the integrated fish-solar system includes the following steps:

[0034] Step S100: obtaining a preliminary photovoltaic power generation benefit evaluation value of a photovoltaic area within a target integrated fishery-photovoltaic field within a project benefit evaluation period, and simultaneously collecting monitoring video data and historical operation logs of the photovoltaic area within the project benefit evaluation period.

[0035] The historical operation log includes the effective sunshine duration of the photovoltaic area. The effective sunshine duration refers to the period during which the photovoltaic panels in the photovoltaic area actually receive sunlight, excluding invalid sunshine duration caused by cloud cover, cloudy days or other meteorological factors.

[0036] In this embodiment of the present invention, the target photovoltaic area within the integrated fishery-photovoltaic site refers to a specific area within the integrated fishery-photovoltaic site for installing a photovoltaic power generation system. This area may include both water-based and land-based photovoltaic panels. The scope of this area is determined based on the specific requirements of the project planning and actual geographical conditions, and is generally centered on the area where the photovoltaic equipment is installed.

[0037] The project benefit evaluation cycle refers to the timeframe chosen to assess the benefits of a fish-solar integrated power project, such as a quarter, a year, or a specific operating period. This cycle needs to cover a representative data sample, reflecting both seasonal variations and the full duration of the project's operation.

[0038] The preliminary photovoltaic power generation benefit assessment value refers to the estimated value of power generation benefits calculated based on the design parameters and theoretical models of the photovoltaic power generation system, without considering special environmental influences (such as light changes and shading). Its acquisition method generally includes the following steps: First, the theoretical power generation is calculated based on the total installed capacity of the photovoltaic equipment and the design environmental conditions (such as the local standard annual sunshine and equipment efficiency); second, the corresponding economic benefits are calculated based on the electricity market price and policy subsidies (such as renewable energy subsidies); finally, the preliminary benefit assessment value is formed by integrating historical operating data or the results of simulation tools.

[0039] In order to collect monitoring video data and historical operation logs of the photovoltaic area during the project benefit evaluation cycle, it is usually necessary to deploy a dedicated monitoring system. The collection of monitoring video data relies on cameras installed in the photovoltaic area. These devices must cover the entire photovoltaic area to ensure that they can capture the dynamic changes in the shading of the photovoltaic panels. These video data are usually uploaded to the central database in real time through the Internet of Things or edge computing platforms for subsequent analysis. The collection of historical operation logs is based on the monitoring equipment of the photovoltaic power station, including environmental sensors (recording light, temperature, etc.) and equipment management systems (recording sunshine duration, power generation, etc.). These log data are automatically recorded and stored by the system and can be directly extracted through the interface. To obtain the effective sunshine duration, sensors can be used to monitor the light status of the photovoltaic panels in real time, and invalid periods can be filtered out in combination with shading recognition algorithms to ensure the accuracy and availability of the data.

[0040] Furthermore, the economic benefit analysis and evaluation method based on integrated fish-solar power generation further includes the following steps:

[0041] Step S200 , based on the historical operation logs of the target integrated fishery-photovoltaic farm during the project benefit evaluation period, calculate the illumination duration deviation index of the photovoltaic area during the benefit evaluation period.

[0042] Specifically, Figure 2 A flow chart for calculating the light duration deviation index is shown.

[0043] The calculation of the sunshine duration deviation index of the photovoltaic area during the benefit evaluation period based on the historical operation log of the target integrated fishery photovoltaic field during the project benefit evaluation period specifically includes the following steps:

[0044] Step S201, extracting the effective total sunshine duration of the photovoltaic area from the historical operation log of the target integrated fishery photovoltaic farm within the project benefit evaluation period;

[0045] Step S202, obtaining the standard total sunshine duration of the photovoltaic area of ​​the target integrated fishery photovoltaic field within the project benefit evaluation period;

[0046] Step S203 , according to the sunshine duration deviation calculation formula, combined with the effective total sunshine duration and the standard total sunshine duration of the photovoltaic area, calculate the sunshine duration deviation index of the photovoltaic area within the project benefit evaluation period.

[0047] The calculation formula for the illumination duration deviation is: Among them D light Refers to the light duration deviation index, L actual Refers to the total effective sunshine duration, L std Refers to the standard total sunshine duration.

[0048] In an embodiment of the present invention, in order to extract the effective total sunshine duration of the photovoltaic area from the historical operation log of the target integrated fish-solar field within the project benefit evaluation period, the following method can be used:

[0049] First, the PV zone's historical operation log records daily sunlight data for the area, including information such as daily sunshine duration, weather conditions, and whether there are any obstructions. Based on the sensors and meteorological equipment installed in the PV zone, the historical log records hourly or daily light intensity data. To obtain the total effective sunshine duration, each day's sunlight data must be filtered to remove invalid sunshine periods caused by cloud cover, overcast skies, or other meteorological factors. This can be achieved by setting a light intensity threshold to determine which periods are valid. For example, when the light intensity exceeds a preset standard value, it is considered valid sunshine duration. Ultimately, by accumulating all valid sunshine durations, the total effective sunshine duration for the PV zone over the entire project benefit evaluation period can be calculated.

[0050] The standard total sunshine duration for the target integrated fishery photovoltaic field photovoltaic area during the project benefit evaluation period is typically derived from meteorological data or historical climate information. This data can be obtained by consulting the local meteorological department or using specialized photovoltaic system simulation tools. For example, local solar radiation data and standard photovoltaic panel installation angles can be combined with a standard meteorological model to calculate the expected total sunshine duration for the area during the project benefit evaluation period. The standard total sunshine duration is generally unaffected by shading and weather conditions and represents the total amount of sunlight the area can receive under ideal weather conditions.

[0051] Assume that during the project benefit evaluation period, the photovoltaic area of ​​the target integrated fishery solar farm receives 500 hours of effective sunshine, as recorded in historical operation logs, while the standard total sunshine duration calculated based on local meteorological data is 600 hours. Effective sunshine duration refers to the actual amount of sunlight received by the photovoltaic area during that period, excluding periods of ineffective sunlight due to cloud cover, overcast skies, or other meteorological factors.

[0052] Based on the formula for calculating the sunshine duration deviation, we can derive the sunshine duration deviation index. First, calculate the sunshine duration deviation: the standard sunshine duration minus the effective sunshine duration, then divide it by the standard sunshine duration. Specifically, the calculation process is to subtract the effective sunshine duration of 500 hours from the standard sunshine duration of 600 hours, resulting in 100 hours. Then, divide this difference, 100, by the standard sunshine duration of 600 hours, to obtain 0.1667. Finally, the sunshine duration deviation index is obtained by adding 1 to this result: 1 + 0.1667, resulting in a deviation index of 1.1667. This means that the actual sunshine duration of this photovoltaic area is approximately 16.67% less than the standard sunshine duration, resulting in a sunshine duration deviation index of 1.1667.

[0053] This deviation index can be used to adjust the initial PV power generation benefit assessment. For example, if the initial benefit assessment is 1,000 yuan, to account for insufficient sunlight, we need to multiply the benefit value by the sunlight duration deviation index. The result is 1,000 yuan multiplied by 1.1667, which ultimately comes to 1,166.7 yuan. This indicates that although sunlight is lower than expected, the benefit parameter should be appropriately inflated due to shading or other factors.

[0054] Through such corrections, we can more accurately reflect the impact of actual lighting conditions on the benefits of photovoltaic power generation, thereby deriving a more precise benefit assessment value.

[0055] Furthermore, the economic benefit analysis and evaluation method based on integrated fish-solar power generation further includes the following steps:

[0056] Step S300: analyzing the monitoring video data of the photovoltaic area of ​​the target integrated fishery-photovoltaic field within the project benefit evaluation period, and evaluating and calculating the light shielding impact index of the photovoltaic area.

[0057] Specifically, Figure 3 A flow chart for calculating the light occlusion impact index is shown.

[0058] Analyzing the monitoring video data of the photovoltaic area of ​​the target integrated fishery-photovoltaic field during the project benefit evaluation period, and evaluating and calculating the light shielding impact index of the photovoltaic area specifically include the following steps:

[0059] Step S301, obtaining monitoring video data of the photovoltaic area of ​​the target integrated fishery photovoltaic field within the project benefit evaluation period;

[0060] Step S302: Processing the monitoring video data through intelligent analysis technology to identify the shading of the photovoltaic panels, searching for shading factors that affect the illumination of the photovoltaic panels, and recording the shading area and corresponding duration of each shading event;

[0061] Step S303 , calling the light shielding impact index calculation formula, combining the shielding area and duration of all shielding events, and comprehensively calculating the light shielding impact index of the photovoltaic area during the project benefit evaluation period.

[0062] The calculation formula of the light shading impact index is: Among them D shadow Refers to the light occlusion impact index, n refers to the total number of occlusion events, A i Refers to the occlusion area of ​​the i-th occlusion event, A total Refers to the total area of ​​PV panels, T i Refers to the duration of the i-th occlusion event, T total Refers to the total duration of the project benefit evaluation cycle.

[0063] In this embodiment of the present invention, first, surveillance cameras with wide coverage and high resolution are deployed throughout the photovoltaic area of ​​the target integrated fish-photovoltaic field to ensure that all areas of the photovoltaic panels are monitored. These cameras must support 24 / 7 recording and be able to record the operation of the photovoltaic panels in real time. Surveillance video data will be continuously collected throughout the project benefit evaluation cycle and stored in a centralized database for subsequent analysis.

[0064] Next, intelligent analysis technology is used to process the surveillance video data. Computer vision technology (such as image recognition algorithms based on deep learning) is used to analyze the occlusion of photovoltaic panels in the surveillance video. Specifically, the surveillance video is first divided into frames, and the image of each frame is processed. The trained model is used to identify whether the photovoltaic panel is blocked, as well as the nature of the blocking factors (such as floating objects, plants, building shadows, etc.). Then, the blocked area and the corresponding duration of the blockage are recorded for each blockage event. For example, the blocked area can be obtained by performing pixel-level statistics on the blocked part of the photovoltaic panel and converting it into the actual area, while the blocking duration is calculated by analyzing the occlusion status of consecutive frames.

[0065] On this basis, the calculation formula for the light blocking impact index is called, and the blocking area and duration of all recorded blocking events are combined to calculate the light blocking impact index of the photovoltaic area during the project benefit evaluation period.

[0066] The following is a detailed calculation example:

[0067] Assume that the total photovoltaic area of ​​the target integrated fish-photovoltaic field is 100 square meters and the total evaluation period is 100 hours. The following three occlusion events are detected in the surveillance video:

[0068] 1. The first occlusion event has an area of ​​20 square meters and lasts for 5 hours.

[0069] 2. The second obstruction event had an area of ​​10 square meters and lasted for 10 hours.

[0070] 3. The third obstruction event had an area of ​​30 square meters and lasted for 2 hours.

[0071] According to the calculation formula of light shading impact index: After substituting the data, it is calculated that the impact of the first occlusion is 0.01, the impact of the second occlusion is 0.01, and the impact of the third occlusion is 0.006.

[0072] The total impact is (0.01+0.01+0.006) / 3=0.0086, D shadow =1+0.00867=1.00867.

[0073] Furthermore, the economic benefit analysis and evaluation method based on integrated fish-solar power generation further includes the following steps:

[0074] In step S400 , the preliminary photovoltaic power generation benefit evaluation value is corrected twice by combining the sunshine duration deviation index and the sunshine shielding impact index to obtain a final photovoltaic power generation benefit evaluation value.

[0075] Specifically, Figure 4A flow chart for obtaining the final photovoltaic power generation benefit evaluation value is shown.

[0076] Among them, combining the sunshine duration deviation index and the sunshine shielding impact index, the preliminary photovoltaic power generation benefit assessment value is revised twice to obtain the final photovoltaic power generation benefit assessment value. The specific steps include:

[0077] Step S401, multiplying the preliminary photovoltaic power generation benefit evaluation value by the sunshine duration deviation index to obtain a secondary photovoltaic power generation benefit evaluation value;

[0078] Step S402 : multiplying the secondary photovoltaic power generation benefit evaluation value by the light shielding impact index to obtain a final photovoltaic power generation benefit evaluation value.

[0079] In an embodiment of the present invention, combined with the examples in steps S200 and S300, the preliminary benefit evaluation value (1,000 yuan) is first multiplied by the light duration deviation index (1.1667) to obtain the secondary photovoltaic power generation benefit evaluation value (1,166.7 yuan), and then the secondary photovoltaic power generation benefit evaluation value (1,166.7 yuan) is multiplied by the light shielding impact index (1.00867) to obtain the final photovoltaic power generation benefit evaluation value (1,176.8).

[0080] These two adjustment methods help to more accurately reflect the impact of actual sunlight conditions on the benefits of photovoltaic power generation, thereby improving the accuracy and reliability of benefit assessments. First, the sunshine duration deviation index can reasonably correct preliminary benefit assessments by quantifying the deviation between actual sunshine duration and standard sunshine duration. Whether the sunshine duration is insufficient or excessive, adjusting the deviation index ensures that the preliminary benefit assessment value is closer to the actual situation, thereby avoiding overly optimistic or pessimistic estimates and reducing prediction errors. For example, if the sunshine duration is insufficient, adjusting the deviation index will effectively reduce the benefit assessment value, ensuring that the result is more in line with the actual power generation capacity; conversely, if the sunshine duration is too long, the assessment value can be adjusted accordingly to avoid excessive expectations.

[0081] Secondly, the light blocking impact index further refines the evaluation of photovoltaic power generation benefits, especially when taking into account physical blocking factors in the environment (such as buildings, trees, etc.), it can accurately quantify the impact of blocking area and blocking duration. Many areas where photovoltaic sites are located are subject to varying degrees of blocking, which may result in photovoltaic panels not being able to effectively receive sunlight for some time. The blocking impact index takes this into account and incorporates the power generation capacity of photovoltaic panels in a blocked state into the calculation, which can effectively adjust the benefit evaluation value. This adjustment mechanism ensures a high degree of match between photovoltaic power generation benefit evaluation and actual conditions, especially for areas with complex terrain or those that are more affected by blocking. This adjustment is particularly important.

[0082] The combination of these two adjustment mechanisms not only improves the accuracy and scientific nature of benefit assessments, but also provides project managers with more reliable and actionable economic forecasts. These adjustments enable managers to make more rational decisions during project planning, operations, and maintenance, avoiding the underestimation or overestimation of benefits often associated with a single model. This approach also provides investors with a clearer risk assessment, enabling them to better understand the balance between investment returns and potential risks, thereby helping them make more accurate investment decisions.

[0083] In the long term, this assessment method, based on the sunshine duration deviation and shading impact index, can be widely applied to photovoltaic projects in different regions and climates, especially in highly variable climates and complex geographical conditions. As the photovoltaic industry continues to develop, this scientific and precise economic assessment method will promote the improvement of industry standards, facilitate the optimized design of photovoltaic projects, and rationally allocate resources, thereby enhancing project sustainability and profitability. Ultimately, this will improve the overall return on investment for the photovoltaic industry and make a greater contribution to society's energy transition.

[0084] It should be understood that, although the various steps in the flow chart of each embodiment of the present invention are shown in sequence according to the indication of the arrows, these steps are not necessarily performed in sequence according to the order indicated by the arrows. Unless otherwise specified herein, the execution of these steps is not strictly limited in order, and these steps can be performed in other orders. Moreover, at least a portion of the steps in each embodiment may include a plurality of sub-steps or a plurality of stages, and these sub-steps or stages are not necessarily performed at the same time, but can be performed at different times, and the execution order of these sub-steps or stages is not necessarily performed in sequence, but can be performed in turn or alternately with at least a portion of other steps or sub-steps or stages of other steps.

[0085] Those skilled in the art will appreciate that all or part of the processes in the above-mentioned embodiments can be implemented by instructing the relevant hardware through a computer program. The program can be stored in a non-volatile computer-readable storage medium. When the program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this application can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in various forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

[0086] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0087] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

[0088] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. The economic benefit analysis and evaluation method based on fish-solar integration is characterized by: The method comprises: Obtain preliminary photovoltaic power generation benefit assessment values ​​for the photovoltaic area within the target integrated fishery-solar site during the project benefit assessment period, and simultaneously collect monitoring video data and historical operation logs for the photovoltaic area during the project benefit assessment period; Based on the historical operation logs of the target integrated fishery-photovoltaic field during the project benefit evaluation period, the sunshine duration deviation index of the photovoltaic area during the benefit evaluation period is calculated; Analyze the monitoring video data of the photovoltaic area of ​​the target integrated fishery photovoltaic field during the project benefit evaluation period, and evaluate and calculate the light shielding impact index of the photovoltaic area; Combined with the sunshine duration deviation index and the sunshine shielding impact index, the preliminary photovoltaic power generation benefit assessment value was revised twice to obtain the final photovoltaic power generation benefit assessment value.

2. The economic benefit analysis and evaluation method based on integrated fish-light system according to claim 1 is characterized in that: The historical operation log includes the effective sunshine duration of the photovoltaic area. The effective sunshine duration refers to the period during which the photovoltaic panels in the photovoltaic area actually receive sunlight, excluding invalid sunshine duration caused by cloud cover, cloudy days or other meteorological factors.

3. The economic benefit analysis and evaluation method based on integrated fish-light system according to claim 2 is characterized in that: Based on the historical operation logs of the target integrated fishery-photovoltaic field during the project benefit evaluation period, the steps for calculating the sunshine duration deviation index of the photovoltaic area during the benefit evaluation period include: Extract the effective total sunshine duration of the photovoltaic area from the historical operation log of the target integrated fishery photovoltaic field during the project benefit evaluation period; Obtain the standard total sunshine duration of the photovoltaic area of ​​the target integrated fishery photovoltaic field during the project benefit evaluation period; According to the calculation formula of sunshine duration deviation, combined with the effective total sunshine duration and standard total sunshine duration of the photovoltaic area, the sunshine duration deviation index of the photovoltaic area during the project benefit evaluation period is calculated.

4. The economic benefit analysis and evaluation method based on integrated fish-light system according to claim 3 is characterized in that: The calculation formula for the illumination duration deviation is: Among them D light Refers to the light duration deviation index, L actual Refers to the total effective sunshine duration, L std Refers to the standard total sunshine duration.

5. The economic benefit analysis and evaluation method based on integrated fishery and solar power according to claim 1 is characterized in that: The steps of analyzing the monitoring video data of the photovoltaic area of ​​the target integrated fish-photovoltaic field during the project benefit evaluation period and evaluating and calculating the light shielding impact index of the photovoltaic area include: Obtain monitoring video data of the photovoltaic area of ​​the target integrated fishery photovoltaic field during the project benefit evaluation period; Through intelligent analysis technology, the monitoring video data is processed to identify the occlusion of photovoltaic panels, search for occlusion factors that affect the illumination of photovoltaic panels, and record the occlusion area and corresponding duration of each occlusion event; The light blocking impact index calculation formula is called, and the blocking area and duration of all blocking events are combined to comprehensively calculate the light blocking impact index of the photovoltaic area during the project benefit evaluation period.

6. The economic benefit analysis and evaluation method based on integrated fishery and solar power according to claim 5 is characterized in that: The calculation formula of the light shading impact index is: Among them D shadow Refers to the light occlusion impact index, n refers to the total number of occlusion events, A i Refers to the occlusion area of ​​the i-th occlusion event, A total Refers to the total area of ​​PV panels, T i Refers to the duration of the i-th occlusion event, T total Refers to the total duration of the project benefit evaluation cycle.

7. The economic benefit analysis and evaluation method based on integrated fish-light system according to claim 1 is characterized in that: Combining the sunshine duration deviation index and the sunshine shielding impact index, the preliminary photovoltaic power generation benefit assessment value is revised twice to obtain the final photovoltaic power generation benefit assessment value. The steps include: Multiply the preliminary photovoltaic power generation benefit assessment value by the sunshine duration deviation index to obtain the secondary photovoltaic power generation benefit assessment value; The secondary photovoltaic power generation benefit assessment value is multiplied by the light shielding impact index to obtain the final photovoltaic power generation benefit assessment value.

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