Solar panel state estimation system and solar panel state estimation method

Abstract

A solar panel state estimation system is provided that can reduce the risk of solar panels becoming covered in snow or being damaged. [Solution] The solar panel status estimation system 1 is equipped with a control device 30 having a memory unit 32 that pre-stores base information for the installation location of the solar panel structure and solar panel information indicating the installation status of the solar panels, a communication unit 33 that is connected to an external database that transmits extracted snow information that indicates the snow accumulation state at the installation location of the solar panel structure and extracted weather information that indicates the weather conditions at the installation location of the solar panel structure, and a processing unit 31 that determines damage to the solar panel or a decrease in power generation capacity based on the extracted snow information and extracted weather information, and the memory unit 32 stores threshold information and weather standard value information for determining damage or a decrease in power generation capacity, and the processing unit 31 determines damage to the solar panel and a decrease in power generation capacity of the solar panel, and if so determined, issues a warning to an external terminal.

Description

[Technical Field]

[0001] The present invention relates to a solar panel state estimation system and a solar panel state estimation method for estimating the state of a solar cell panel. [Background technology]

[0002] Solar panel structures used in solar power generation systems support solar panels with frames and mounting bases. Solar panels are attached to the frames at an angle, which can lead to snow accumulating on the top surface of the solar panels. As shown in Figure 7(a), snow that accumulates on the top surface of a solar panel falls downward due to the angle. When snow accumulates near the bottom edge (snow caps), it prevents the snow from sliding off, resulting in a long-term decline in power generation efficiency. In addition, as shown in Figure 7(b), there have been cases where the solar panel was damaged due to being unable to withstand the weight of snow accumulated on the top surface.

[0003] To prevent the solar panel from becoming covered with snow or being damaged, a technology has been disclosed that provides a cover that covers the area from the lower end of the solar panel's upper surface in the direction of inclination to a specified part on the solar panel (see Patent Document 1). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 2020-167931 Summary of the Invention [Problem to be solved by the invention]

[0005] However, in recent years, there have been areas where snowfall has increased due to abnormal weather, etc., and it cannot be said that covers will definitely prevent solar panels from becoming covered in snow or being damaged. If solar panels become covered in snow or are damaged, it will take time to repair them, and they will not be able to generate electricity until repairs are made.

[0006] The present invention aims to provide a solar panel status detection system and a solar panel status estimation method that can detect the status of solar panels and the weather conditions at the installation location, and reduce the risk of solar panels becoming covered in snow or being damaged. [Means for solving the problem]

[0007] The solar panel state detection system according to the present invention comprises: a storage unit that stores in advance base information of an installation location of a solar panel structure having a solar panel and a support portion that supports the solar panel, and solar panel information that indicates an installation state of the solar panel; A communication unit connected to an external database that transmits extracted snow accumulation information indicating the snow accumulation state at the installation location of the solar panel structure and extracted weather information indicating the weather condition at the installation location of the solar panel structure; a processing unit that determines whether the solar panel is damaged or the amount of power generation is reduced based on the extracted snow accumulation information and the extracted weather information; a control device having at least the storage unit further stores preset threshold information for determining whether the solar panel is damaged or the amount of power generation is reduced, and preset meteorological reference value information indicating the conditions of the extracted weather information for determining whether snow is present on the upper surface of the solar panel; The processing unit comparing the extracted snow accumulation information with the threshold information to determine damage to the solar panel; comparing the extracted snow accumulation information with the threshold information, and comparing the extracted weather information with the weather reference value information, and determining a decrease in the amount of power generation of the solar panel; If the solar panel is determined to be damaged or the amount of power generated by the solar panel is reduced, a warning is sent to an external terminal. death, The base information is at least one of the location of the installation location of the solar panel structure and the altitude of the installation location of the solar panel structure, The solar panel information is at least one of the eaves height, load capacity, number of vertically arranged panels, and tilt angle of the solar panel, The extracted snow information is at least one of extracted snow depth and extracted snow weight transmitted from the external database for each time period at the installation location of the solar panel structure, The extracted weather information is at least one of the extracted solar radiation amount, the extracted temperature, or the extracted longwave radiation amount transmitted from the external database for each time period at the installation location of the solar panel structure, the threshold information is at least one of a first damage threshold indicating a snow depth at which the solar panel structure may be damaged, a second damage threshold indicating a snow weight at which the solar panel structure may be damaged, or a power generation reduction threshold indicating a snow depth at which the power generation amount may be reduced, The meteorological reference value information is information that serves as a standard for determining whether or not snow is present on the upper surface of the solar panel, and is at least one of a first solar radiation reference value and a second solar radiation reference value that indicate a standard for the amount of solar radiation, a temperature reference value that indicates a standard for the temperature, and a longwave radiation reference value that indicates a standard for the amount of longwave radiation. [Effects of the Invention]

[0008] The solar panel state estimation system according to the present invention can detect the state of the solar panel and the weather conditions at the installation location, thereby reducing the risk of the solar panel being covered in snow or being damaged. [Brief explanation of the drawings]

[0009] [Figure 1] 1 shows an example of a solar panel state estimation system according to an embodiment of the present invention. [Figure 2] 1 shows an example of a system configuration of a solar panel state estimation system according to an embodiment of the present invention. [Figure 3] 2 shows an example of a control device of the solar panel state estimation system of the present embodiment. [Figure 4] 3 shows an example of information handled by the solar panel state estimation system of the present embodiment. [Figure 5] 10 shows an example of an output screen of the solar panel state estimation system of the present embodiment. [Figure 6] 3 shows an example of a flowchart of a solar panel state estimation method according to the present embodiment. [Figure 7] 10 shows an example of weather information conditions for the solar panel state estimation method of the present embodiment. [Figure 8] 1 shows an example of a dangerous state of a solar panel structure. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, an embodiment of a solar panel state estimation system 1 according to the present invention will be described with reference to the drawings. The solar panel state estimation system 1 of this embodiment is used for an existing or newly installed solar panel structure 10.

[0011] Fig. 1 shows an example of a solar panel state estimation system 1 according to this embodiment. Fig. 2 shows an example of the system configuration of the solar panel state estimation system according to this embodiment.

[0012] The solar panel state estimation system 1 of this embodiment includes at least a detection unit 20 that detects the state of an existing or new solar panel structure 10 and surrounding weather information, and a control device 30 that estimates the state of snow accumulation on the solar panels based on weather information in an external database 90 or weather information detected by the detection unit 20. The state of the solar panels estimated by the control device 30 is transmitted to a management terminal 60 such as a server or relay station via a wired or wireless network 50, and is then transmitted from the management terminal 60 to a user terminal 80 via a wired or wireless network 70.

[0013] The solar panel structure 10 of this embodiment has a solar panel 11 and a support portion 12 that supports the solar panel 11. The solar panel 11 uses a silicon semiconductor to convert light energy into electrical energy and may be a commonly used planar panel. The support portion 12 supports the solar panel 11 at a preset angle relative to the ground. The solar panel structure 10 may be either an existing or new installation.

[0014] The detection unit 20 of this embodiment is preferably a sensor that detects the temperature, solar radiation, long-wave radiation, etc. at the installation location of the solar panel structure 10, or a camera that detects the state of snow accumulation on the upper surface of the solar panel 11. The sensor may also detect humidity, wind speed, precipitation, etc.

[0015] If only the weather information in the external database 90 is used, the detection unit 20 does not need to be installed. Alternatively, both the weather information in the external database 90 and the weather information detected by the detection unit 20 may be used. By using the external database 90, a low-cost and quick system can be formed. By using the detection unit 20, it is possible to estimate with higher accuracy whether the solar panel 11 is covered in snow or damaged.

[0016] The external database 90 may be a meteorological data database such as the AMeDAS data of the Japan Meteorological Agency. The AMeDAS data is preferably simulated by the control device 30 using a snow cover transformation model or the like.

[0017] 3 shows an example of the control device 30 of the solar panel state estimation system 1 of this embodiment. The control device 30 has at least a processing unit 31 that calculates the power generation amount risk and damage risk of the solar panel 11 based on input information, a memory unit 32 that stores a data management program 32a such as a calculation program for the processing unit 31 and various information 100, and a communication unit 33 that connects to the detection unit 20, the external database 90, the management terminal 60, etc. via a network 50. The control device 30 may also have an input unit 34 such as a keyboard or touch panel that can input data to be calculated by the processing unit 31 and data to be stored in the memory unit 32, and an output unit 35 that can display the results of calculations by the processing unit 31.

[0018] Fig. 4 shows an example of information handled by the solar panel state estimation system of this embodiment. Fig. 4(a) shows base information 101, Fig. 4(b) shows solar panel information 102, Fig. 4(c) shows threshold information 103, Fig. 4(d) shows extracted snow accumulation information 104, Fig. 4(e) shows extracted weather information 105, Fig. 4(f) shows detected weather information 106, and Fig. 4(g) shows weather reference value information 107.

[0019] The base information 101 is the location and altitude of the installation location of the solar panel structure 10. The installation location of the solar panel structure 10 can be measured or surveyed at the time of installation and stored in the memory unit 32. The location can be indicated by latitude and longitude. Note that in areas with large elevation differences, there is a possibility of large errors in the altitude, so it is preferable to measure it actually.

[0020] The solar panel information 102 may be at least one of the eaves height, load capacity, number of vertically arranged panels, and tilt angle of the solar panels 11. The eaves height, load capacity, number of vertically arranged panels, and tilt angle of the solar panels 11 may be obtained from measurement values or specification data at the time of installation and stored in advance in the storage unit 32.

[0021] The threshold information 103 is set in advance for each solar panel structure 10 based on the base information 101 and the solar panel information 102. The first damage threshold is the snow depth at which damage may occur. The second damage threshold is the snow weight at which damage may occur. The power generation reduction threshold is the snow depth at which power generation may decrease. For example, in this embodiment, the first damage threshold is set to snow depth ≧ height of the eaves of the solar panel 11 × 0.4, and the second damage threshold is snow weight ≧ load capacity of the solar panel 11 × 0.8. Furthermore, the power generation reduction threshold in this embodiment is set to snow depth ≧ 20 cm.

[0022] Furthermore, the threshold information 103 may be set in stages to output the damage status in stages. For example, the threshold information 103 may be set to set the possibility or degree of damage by setting a first major damage threshold indicating a high possibility or degree of damage as eaves edge height x 0.4, a first medium damage threshold indicating a medium possibility or degree of damage as eaves edge height x 0.3, and a first minor damage threshold indicating a low possibility or degree of damage as eaves edge height x 0.2. Similarly, the possibility or degree of damage may be set by setting a second major damage threshold as load capacity x 0.8, a second medium damage threshold as load capacity x 0.6, and a second minor damage threshold as load capacity x 0.4. By setting the degree of damage in this way, it is possible to deliver information such as an estimated repair time.

[0023] The extracted snow accumulation information 104 is the snow depth and snow weight for each time period at the installation location of the solar panel structure 10 extracted from the external database 90. For example, it may be the snow depth and snow weight for each region and time period extracted from AMeDAS or the like.

[0024] The extracted weather information 105 is at least one weather condition selected from the extracted solar radiation amount indicating the amount of solar radiation for each time period at the installation location of the solar panel structure 10, the extracted temperature indicating the temperature, and the extracted longwave radiation indicating the longwave radiation, which are extracted from the external database 90. The extracted weather information 105 may also include data such as extracted humidity indicating the humidity at the installation location of the solar panel structure 10, extracted wind speed indicating the wind speed, and extracted precipitation amount indicating the amount of precipitation. The extracted weather information 105 extracted from the external database 90 is stored in the memory unit 32 of the control device 30.

[0025] The detected weather information 106 is at least one weather condition selected from the detected solar radiation amount, which indicates the amount of solar radiation for each time period at the installation location of the solar panel structure 10, detected temperature, which indicates the temperature, and detected longwave radiation, which indicates the longwave radiation, detected by the detection unit 20. The detected weather information 106 may also include data such as detected humidity, which indicates the humidity at the installation location of the solar panel structure 10, detected wind speed, which indicates the wind speed, and detected precipitation, which indicates the amount of precipitation. The detected weather information 106 detected by the detection unit 20 is stored in the memory unit 32 of the control device 30. If the detection unit 20 is not installed, the detected weather information 106 is not used. The extracted weather information 105 and the detected weather information 106 may simply be weather information.

[0026] The meteorological reference value information 107 is information set in advance to be compared with at least one of the extracted weather information 105 or the detected weather information 106. For example, it may be a first solar radiation reference value and a second solar radiation reference value to be compared with the extracted solar radiation amount or the detected solar radiation amount, a temperature reference value to be compared with the extracted temperature or the detected temperature, or a longwave radiation reference value to be compared with the extracted longwave radiation amount or the detected longwave radiation amount. Furthermore, when the extracted humidity or the detected humidity, the extracted wind speed or the detected wind speed, or the extracted precipitation amount or the detected precipitation amount is used, it is sufficient to set and use a humidity reference value, a wind speed reference value, or a precipitation reference value in advance.

[0027] FIG. 5 shows an example of an output screen of the solar panel state estimation system 1 of this embodiment.

[0028] The solar panel state estimation system 1 of this embodiment outputs the calculation results of the control device 30 to the output unit 35, the management terminal 60, the user terminal 80, etc. For example, the management terminal 60 and the user terminal 80 are used by solar power generation companies, operation management companies, maintenance companies, snow removal companies, etc., and display warnings about the risk of a decrease in the power generation amount of the solar panel structure 10, the risk of damage, and damage, etc.

[0029] FIG. 6 shows an example of a flowchart of the solar panel state estimation method of this embodiment.

[0030] The control device 30 of the solar panel state estimation system 1 of this embodiment determines the risk of a decrease in power generation capacity, risk of damage, and whether or not damage has occurred for the solar panel structure 10 shown in FIG. 5 from the various information 100 shown in FIG. 4. For example, the control device 30 determines the risk of a decrease in power generation capacity, risk of damage, and whether or not damage has occurred, or the level of the risk of a decrease in power generation capacity and risk of damage. Note that the flowchart of the solar panel state estimation method of this embodiment shows an example in which the detection unit 20 is not used, but the extracted snow accumulation information 104 and extracted weather information 105 from the external database 90 are used. When the detection unit 20 is used, at least one of the extracted weather information 105 can be replaced with the detected weather information 106.

[0031] First, in step 1, the base information 101 and the solar panel information 102 are input to the control device 30. The input base information 101 and the solar panel information 102 are stored in the memory unit 32 for each target solar panel structure 10.

[0032] Next, in step 2, threshold information 103 is set. The threshold information 103 is a first damage threshold and a second damage threshold at which a damage risk occurs, and a power generation amount decrease threshold at which a power generation amount decrease risk occurs, and is set for each target solar panel structure 10. Note that the threshold information 103 may be set in stages according to the level of risk.

[0033] Steps up to step 2 may be stored in advance in the storage unit 32 when the solar panel structure 10 is installed.

[0034] Next, in step 3, the extracted snow depth information 104 and extracted weather information 105 are input from the external database 90 to the processing unit 31 or the memory unit 32. It is preferable that the extracted snow depth information 104 and extracted weather information 105 are input for each time period and stored in the memory unit 32. In the solar panel state estimation method of this embodiment, extracted snow depth and extracted snow weight are input as the extracted snow depth information 104, and extracted solar radiation, extracted temperature, and extracted longwave radiation are input as the extracted weather information.

[0035] Next, in step 4, the processing unit 31 determines whether the extracted snow depth information 104 input from the external database 90 is equal to or greater than the threshold information 103. The solar panel state estimation method of this embodiment determines whether the extracted snow depth is equal to or greater than the first damage threshold, or whether the extracted snow weight is equal to or greater than the second damage threshold. If the extracted snow depth information 104 sent from the external database 90 is equal to or greater than the first damage threshold or the second damage threshold, a damage warning is output in step 5.

[0036] The processing unit 31 may also compare the extracted snow information 104 with the first or second damage threshold for past data. For example, if the current extracted snow depth is equal to or greater than the first damage threshold or the current extracted snow weight is equal to or greater than the second damage threshold, the processing unit 31 may then determine whether the extracted snow depth from 12 or 24 hours ago was equal to or greater than the first damage threshold or whether the extracted snow weight from 12 or 24 hours ago was equal to or greater than the second damage threshold. If the extracted snow depth from 12 or 24 hours ago was equal to or greater than the first damage threshold or if the extracted snow weight from 12 or 24 hours ago was equal to or greater than the second damage threshold, a damage warning is output, which is preferable because it allows for more accurate determination.

[0037] If the extracted snow depth information 104 is less than the first and second damage thresholds, in step 6, the processing unit 31 determines whether the snow depth of the input extracted snow depth information 104 is equal to or greater than the power generation reduction threshold.

[0038] If the snow depth in the extracted snow information 104 is equal to or greater than the power generation reduction threshold, it is determined whether the weather information satisfies the conditions in step 7. If the snow depth in the extracted snow information 104 is less than the power generation reduction threshold, the control device 30 ends the control.

[0039] 7 shows an example of the weather information conditions for the solar panel state estimation method of this embodiment. The weather information may be at least one of extracted weather information 105 or detected weather information 106. Step 7 is preferably processed as shown in FIG.

[0040] First, in step 71, the control device 30 determines whether or not the extracted solar radiation amount is equal to or less than a first solar radiation reference value.

[0041] If the extracted solar radiation is equal to or less than the first solar radiation reference value in step 71, the control device 30 determines whether the extracted air temperature is equal to or less than the air temperature reference value in step 72. If the extracted air temperature is equal to or less than the air temperature reference value in step 72, the control device 30 determines that there is snow on the upper surface of the solar panel 11.

[0042] If the extracted air temperature is greater than the reference air temperature value in step 72, the control device 30 determines whether the amount of longwave radiation is less than or equal to the reference longwave radiation value in step 73. If the amount of longwave radiation is less than or equal to the reference longwave radiation value in step 73, the control device 30 determines that there is no snow on the top surface of the solar panel 11. If the amount of longwave radiation is greater than the reference longwave radiation value in step 73, the control device 30 determines that there is snow on the top surface of the solar panel 11.

[0043] If the extracted solar radiation amount is greater than the first solar radiation reference value in step 71, then in step 74 the control device 30 determines whether the extracted air temperature is equal to or less than the air temperature reference value. If the extracted air temperature is greater than the air temperature reference value in step 74, then the control device 30 determines that there is no snow on the upper surface of the solar panel 11. If the extracted air temperature is equal to or less than the air temperature reference value in step 74, then the control device 30 determines in step 75 whether the extracted solar radiation amount is equal to or less than the second solar radiation reference value.

[0044] In step 75, if the extracted solar radiation amount is equal to or less than the second solar radiation reference value, it is determined that there is snow on the upper surface of the solar panel 11. In step 75, if the extracted solar radiation amount is greater than the second solar radiation reference value, it is determined that there is no snow on the upper surface of the solar panel 11.

[0045] If it is determined in step 7 that there is snow on the upper surface of the solar panel 11, the control device 30 outputs a warning of a decrease in power generation amount in step 8. If it is determined in step 7 that there is no snow on the upper surface of the solar panel 11, the control device 30 ends the control.

[0046] As described above, the solar panel state estimation system 1 of this embodiment includes a control device 3 having a storage unit 32 that stores in advance base information 101 of an installation location of a solar panel structure 10 having solar panels 11 and support units 12 that support the solar panels 11, and solar panel information 102 that indicates the installation state of the solar panels 11, a communication unit 33 that is connected to an external database 90 that transmits extracted snow accumulation information 104 that indicates the snow accumulation state at the installation location of the solar panel structure 10, and extracted weather information 105 that indicates the weather condition at the installation location of the solar panel structure 10, and a processing unit 31 that determines damage to the solar panel 11 or a decrease in the amount of power generation based on the extracted snow accumulation information 104 and the extracted weather information 105. 0, and the memory unit 32 further stores preset threshold information 103 for determining whether the solar panel 11 is damaged or the amount of power generation is reduced, and preset weather reference value information 107 indicating conditions for extracted weather information for determining whether snow is present on the upper surface of the solar panel 11. The processing unit 31 compares the extracted snow accumulation information 104 with the threshold information 103 to determine whether the solar panel 11 is damaged, compares the extracted snow accumulation information 104 with the threshold information 103 and compares the extracted weather information 105 with the weather reference value information 107 to determine whether the amount of power generation of the solar panel 11 is reduced, and issues a warning to an external terminal if it determines that the solar panel 11 is damaged or the amount of power generation of the solar panel 11 is reduced. Therefore, the solar panel state estimation system 1 of this embodiment can detect the state of the solar panel 11 and the weather conditions at the installation location, and estimate whether the solar panel 11 is covered with snow or is damaged.

[0047] Furthermore, in the solar panel state estimation system 1 of this embodiment, the base information 101 is at least one of the location of the installation location of the solar panel structure 10 and the altitude of the installation location of the solar panel structure 10, the solar panel information 102 is at least one of the eaves height, load capacity, number of vertically arranged panels, and tilt angle of the solar panels 11, the extracted snow information 104 is at least one of the extracted snow depth and extracted snow weight transmitted by the external database 90 for each time period at the installation location of the solar panel structure 10, and the extracted weather information 105 is at least one of the extracted snow depth and extracted snow weight transmitted by the external database 90 for each time period at the installation location of the solar panel structure 10. The threshold information 103 is at least one of a first damage threshold indicating the snow depth at which the solar panel structure 10 may be damaged, a second damage threshold indicating the snow weight at which damage may occur, or a power generation reduction threshold indicating the snow depth at which power generation may decrease. The meteorological reference value information 107 is information that serves as a reference for determining whether or not snow is present on the upper surface of the solar panel 11, and is at least one of a first solar radiation reference value and a second solar radiation reference value indicating the solar radiation reference value, a temperature reference value indicating the temperature reference value, and a longwave radiation reference value indicating the longwave radiation reference value. Therefore, the solar panel state estimation system 1 of this embodiment can accurately estimate the snow-covered or damaged state of the solar panel 11 by setting a snow depth or snow weight threshold at which the solar panel 11 is at risk of being covered in snow or damaged.

[0048] Furthermore, in the solar panel state estimation system 1 of this embodiment, the processing unit 31 determines that the solar panel is damaged when the extracted snow depth is greater than the first damage threshold or when the extracted snow weight is greater than the second damage threshold, and determines that the power generation capacity of the solar panel 11 has decreased when the extracted snow depth is greater than the power generation capacity decrease threshold. Therefore, the solar panel state estimation system 1 of this embodiment can accurately estimate whether the solar panel 11 is covered in snow or damaged.

[0049] Furthermore, in the solar panel state estimation system 1 of this embodiment, the processing unit 31 compares the extracted weather information with the meteorological reference value information, and if the extracted solar radiation amount is equal to or less than the first solar radiation reference value and the extracted temperature is equal to or less than the temperature reference value, When the extracted solar radiation is less than the first solar radiation reference value, the extracted temperature is greater than the temperature reference value, and the extracted longwave radiation is greater than the longwave radiation reference value, and, If the extracted solar radiation is greater than the first solar radiation reference value, the extracted temperature is equal to or lower than the temperature reference value, and the extracted solar radiation is equal to or lower than the second solar radiation reference value, A decrease in the amount of power generated by the solar panel 11 is determined. Therefore, the solar panel state estimation system 1 of this embodiment can estimate with high accuracy whether the solar panel 11 is covered in snow or damaged.

[0050] It should be noted that the present invention is not limited to these embodiments, and that although the description of the embodiments includes many specific details for illustrative purposes, those skilled in the art may make various variations and modifications to these details. [Explanation of symbols]

[0051] 1. Solar panel status estimation system 10...Solar panel structure, 11...Solar panel, 20...detection unit, 30...control device, 31...processing unit, 32...storage unit, 90...External database 101...base information, 102...solar panel information, 103...threshold information, 104...extracted snow accumulation information (snow accumulation information), 105...extracted weather information (weather information), 106...detected weather information (weather information), 107...weather reference value information

Claims

1. a storage unit that stores in advance base information of an installation location of a solar panel structure having a solar panel and a support portion that supports the solar panel, and solar panel information that indicates an installation state of the solar panel; A communication unit connected to an external database that transmits extracted snow accumulation information indicating the snow accumulation state for each time period at the installation location of the solar panel structure and extracted weather information indicating the weather condition at the installation location of the solar panel structure; a processing unit that determines whether the solar panel is damaged or the amount of power generation is reduced based on the extracted snow accumulation information and the extracted weather information; a control device having at least the storage unit further stores preset threshold information for determining whether the solar panel is damaged or the amount of power generation is reduced, and preset meteorological reference value information indicating the conditions of the extracted weather information for determining whether snow is present on the upper surface of the solar panel; The processing unit comparing the extracted snow accumulation information with the threshold information to determine damage to the solar panel; comparing the extracted snow accumulation information with the threshold information, and comparing the extracted weather information with the weather reference value information, and determining a decrease in the amount of power generation of the solar panel; If it is determined that the solar panel is damaged and the amount of power generated by the solar panel is reduced, a warning is sent to an external terminal; The base information is at least one of a location of an installation location of the solar panel structure and an altitude of the installation location of the solar panel structure, The solar panel information is at least one of the eaves height, load capacity, number of vertically arranged panels, and tilt angle of the solar panel, The extracted snow information is at least one of extracted snow depth and extracted snow weight transmitted from the external database for each time period at the installation location of the solar panel structure, The extracted weather information is at least one of an extracted solar radiation amount, an extracted temperature, or an extracted longwave radiation amount transmitted from the external database for each time period at the installation location of the solar panel structure, the threshold information is at least one of a first damage threshold indicating a snow depth at which the solar panel structure may be damaged, a second damage threshold indicating a snow weight at which the solar panel structure may be damaged, or a power generation reduction threshold indicating a snow depth at which the power generation amount may be reduced, The meteorological reference value information is information that serves as a reference for determining whether or not snow is present on the upper surface of the solar panel, and is at least one of a first solar radiation reference value and a second solar radiation reference value that indicate a reference for the amount of solar radiation, a temperature reference value that indicates a reference for the temperature, and a longwave radiation reference value that indicates a reference for the amount of longwave radiation. Solar panel status estimation system.

2. The processing unit When the extracted snow depth is greater than the first damage threshold, or when the extracted snow weight is greater than the second damage threshold, it is determined that the solar panel is damaged; If the extracted snow depth is greater than the power generation reduction threshold, a reduction in the power generation amount of the solar panel is determined. The solar panel state estimation system according to claim 1 .

3. The processing unit compares the extracted weather information with the weather reference value information, When the extracted solar radiation amount is equal to or less than the first solar radiation reference value and the extracted air temperature is equal to or less than the air temperature reference value, When the extracted solar radiation amount is equal to or less than the first solar radiation amount reference value, the extracted air temperature is greater than the air temperature reference value, and the extracted longwave radiation amount is greater than the longwave radiation amount reference value, and, When the extracted solar radiation amount is greater than the first solar radiation amount reference value, when the extracted air temperature is equal to or lower than the air temperature reference value and when the extracted solar radiation amount is equal to or lower than the second solar radiation amount reference value, Determining a decrease in the amount of power generated by the solar panel The solar panel state estimation system according to claim 2 .

4. a step of storing in advance base information of an installation location of a solar panel structure having a solar panel and a support portion that supports the solar panel, and solar panel information indicating an installation state of the solar panel; storing preset threshold information for determining whether the solar panel is damaged or the amount of power generation is reduced based on the base information and the solar panel information; a step of storing preset weather reference value information indicating conditions for determining whether or not snow is present on the upper surface of the solar panel; A process of inputting extracted snow accumulation information indicating the snow accumulation state for each time period at the installation location of the solar panel structure transmitted from an external database and extracted weather information indicating the weather condition at the installation location of the solar panel structure; A step of comparing the extracted snow accumulation information with the threshold information to determine damage to the solar panel; a step of comparing the extracted snow accumulation information with the threshold information and comparing the extracted weather information with the weather reference value information to determine a decrease in the amount of power generation of the solar panel; transmitting a warning to an external terminal when it is determined that the solar panel is damaged and the amount of power generated by the solar panel has decreased; and The base information is at least one of a location of an installation location of the solar panel structure and an altitude of the installation location of the solar panel structure, The solar panel information is at least one of the eaves height, load capacity, number of vertically arranged panels, and tilt angle of the solar panel, The extracted snow information is at least one of extracted snow depth and extracted snow weight transmitted from the external database for each time period at the installation location of the solar panel structure, The extracted weather information is at least one of an extracted solar radiation amount, an extracted temperature, or an extracted longwave radiation amount transmitted from the external database for each time period at the installation location of the solar panel structure, the threshold information is at least one of a first damage threshold indicating a snow depth at which the solar panel structure may be damaged, a second damage threshold indicating a snow weight at which the solar panel structure may be damaged, or a power generation reduction threshold indicating a snow depth at which the power generation amount may be reduced, The meteorological reference value information is information that serves as a reference for determining whether or not snow is present on the upper surface of the solar panel, and is at least one of a first solar radiation reference value and a second solar radiation reference value that indicate a reference for the amount of solar radiation, a temperature reference value that indicates a reference for the temperature, and a longwave radiation reference value that indicates a reference for the amount of longwave radiation. Solar panel status estimation method.

5. When the extracted snow depth is greater than the first damage threshold, or when the extracted snow weight is greater than the second damage threshold, it is determined that the solar panel is damaged; If the extracted snow depth is greater than the power generation reduction threshold, a reduction in the power generation amount of the solar panel is determined. The solar panel state estimation method according to claim 4 .

6. The step of comparing the extracted weather information with the weather reference value information includes: When the extracted solar radiation amount is equal to or less than the first solar radiation reference value and the extracted air temperature is equal to or less than the air temperature reference value, When the extracted solar radiation amount is equal to or less than the first solar radiation amount reference value, the extracted air temperature is greater than the air temperature reference value, and the extracted longwave radiation amount is greater than the longwave radiation amount reference value, and, When the extracted solar radiation amount is greater than the first solar radiation amount reference value, when the extracted air temperature is equal to or lower than the air temperature reference value and when the extracted solar radiation amount is equal to or lower than the second solar radiation amount reference value, Determining a decrease in the amount of power generated by the solar panel The solar panel state estimation method according to claim 5 .

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