Display processing device, display processing method and display processing program

Abstract

To display a more useful screen for grasping a state of a photovoltaic power generation system.SOLUTION: A display processing device is used for a photovoltaic power generation system with a power generation unit and comprises: an acquisition unit which acquires a determination result of a state of the photovoltaic power generation system; and a display processing unit which performs display processing of displaying the determination result acquired by the acquisition unit on a map comprising the power generation unit.SELECTED DRAWING: Figure 7

Description

[Technical field]

[0001] The present disclosure relates to a display processing device, a display processing method, and a display processing program. [Background technology]

[0002] Conventionally, techniques for monitoring a photovoltaic power generation system have been developed. For example, Patent Document 1 (JP Patent Publication 2012-205078 A) discloses the following technique. That is, the photovoltaic power generation system is a photovoltaic power generation monitoring system that monitors the power generation status of a plurality of photovoltaic panels in a photovoltaic power generation system that aggregates the output from the plurality of photovoltaic panels and sends it to a power conversion device, and includes a measuring device that is provided at a location where the output electric paths from the plurality of photovoltaic panels are aggregated and measures the amount of power generated by each photovoltaic panel, a lower-level communication device that is connected to the measuring device and has a function of transmitting measurement data of the amount of power generated by the measuring device, an upper-level communication device that has a function of receiving the measurement data transmitted from the lower-level communication device, and a management device that has a function of collecting the measurement data for each photovoltaic panel via the upper-level communication device. The management device is a terminal having functions of information processing and display, such as a personal computer. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2012-205078 A Summary of the Invention [Problem to be solved by the invention]

[0004] There is a need for a technique that goes beyond the technique described in Patent Document 1 and that is capable of displaying a screen for understanding the state of a photovoltaic power generation system and providing a user with more useful information.

[0005] The present disclosure has been made to solve the above-mentioned problems, and its purpose is to provide a display processing device, a display processing method, and a display processing program capable of displaying a more useful screen for understanding the status of a solar power generation system. [Means for solving the problem]

[0006] The display processing device of the present disclosure is a display processing device used in a solar power generation system equipped with a power generation unit, and includes an acquisition unit that acquires a judgment result of the status of the solar power generation system, and a display processing unit that performs display processing to display the judgment result acquired by the acquisition unit on a map including the power generation unit.

[0007] One aspect of the present disclosure can be realized not only as a display processing device equipped with such a characteristic processing unit, but also as a semiconductor integrated circuit that realizes part or all of the display processing device, or as a system that includes a display processing device. Effect of the Invention

[0008] According to the present disclosure, it is possible to display a more useful screen for understanding the status of a photovoltaic power generation system. [Brief description of the drawings]

[0009] [Figure 1] FIG. 1 is a diagram showing a configuration of a solar power generation system according to a first embodiment of the present disclosure. [Diagram 2] FIG. 2 is a diagram illustrating a configuration of a PCS unit according to the first embodiment of the present disclosure. [Diagram 3] FIG. 3 is a diagram showing a configuration of a current collecting unit according to the first embodiment of the present disclosure. [Figure 4] FIG. 4 is a diagram illustrating a configuration of a solar cell unit according to the first embodiment of the present disclosure. [Diagram 5] FIG. 5 is a diagram illustrating a configuration of a determination system according to the first embodiment of the present disclosure. [Figure 6]FIG. 6 is a diagram illustrating a configuration of a monitoring device in the determination system according to the first embodiment of the present disclosure. [Figure 7] FIG. 7 is a diagram illustrating a configuration of a management server according to the first embodiment of the present disclosure. [Figure 8] FIG. 8 is a diagram illustrating an example of a screen displayed by the state display process performed by the management server according to the first embodiment of the present disclosure. [Figure 9] FIG. 9 is a diagram illustrating another example of a screen displayed by the state display process by the management server according to the first embodiment of the present disclosure. [Figure 10] FIG. 10 is a diagram illustrating another example of a screen displayed by the status display process performed by the management server according to the first embodiment of the present disclosure. [Figure 11] FIG. 11 is a flowchart defining an operation procedure when the management server according to the first embodiment of the present disclosure performs the determination process. [Figure 12] FIG. 12 is a flowchart defining an operation procedure when the management server according to the first embodiment of the present disclosure performs the status display process. [Figure 13] FIG. 13 is a diagram illustrating an example of a screen displayed by a statistics display process performed by a management server according to a second embodiment of the present disclosure. [Figure 14] FIG. 14 is a diagram illustrating an example of an explanation field displayed by the statistics display process by the management server according to the second embodiment of the present disclosure. [Figure 15] FIG. 15 is a diagram illustrating another example of the explanation field displayed by the statistics display process by the management server according to the second embodiment of the present disclosure. [Figure 16] FIG. 16 is a diagram showing an example of a screen at a certain time constituting a moving image displayed by a moving image display process by a management server according to a second embodiment of the present disclosure. [Figure 17] FIG. 17 is a diagram showing an example of a screen at another time constituting a moving image displayed by a moving image display process by a management server according to the second embodiment of the present disclosure. [Figure 18]FIG. 18 is a flowchart defining an operation procedure when the management server according to the second embodiment of the present disclosure performs the statistics display process and the video display process. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] First, the contents of the embodiments of the present disclosure will be listed and described. (1) A display processing device according to an embodiment of the present disclosure is a display processing device used in a solar power generation system having a power generation unit, and includes an acquisition unit that acquires a judgment result of the status of the solar power generation system, and a display processing unit that performs display processing to display the judgment result acquired by the acquisition unit on a map including the power generation unit.

[0011] With this configuration, it is possible to provide a display content that associates a map including the power generation unit with the determination result of the state of the photovoltaic power generation system, so that the manager or the like can easily visually recognize the location of a predetermined state, such as the location of an abnormality, on the map. Therefore, it is possible to display a more useful screen for understanding the state of the photovoltaic power generation system.

[0012] (2) In (1) above, when the judgment result indicates a specific state, the display processing unit may further display on the map, in the display processing, a time period during which the state of the solar power generation system is in the specific state.

[0013] With this configuration, the administrator can grasp the judgment result of the state of the photovoltaic power generation system and the time period in which the state of the judgment result occurred on the same screen. In addition, since the administrator can easily grasp the time period in which the state indicated by the judgment result occurred, the administrator can analyze the cause of the state and plan measures to suppress the occurrence of the state.

[0014] (3) In the above (1) or (2), the acquisition unit may further acquire a monitoring result of the power generation unit corresponding to the judgment result, and when the judgment result indicates a specific state, the display processing unit may further display the monitoring result acquired by the acquisition unit on the map in the display processing.

[0015] With this configuration, the administrator can grasp the judgment result of the state of the photovoltaic power generation system and the monitoring result of the power generation unit corresponding to the judgment result on the same screen. In addition, since the administrator can easily grasp the power generation unit information corresponding to the state indicated by the judgment result, the administrator can analyze the cause of the state and plan measures to prevent the state from occurring.

[0016] (4) In the above (2) or (3), the specific state may be a state in which an abnormality occurs in the solar power generation system.

[0017] With this configuration, it is possible to analyze the cause of an abnormality occurring in the photovoltaic power generation system and to plan measures to suppress the occurrence of the abnormality.

[0018] (5) In any of (1) to (4) above, the acquisition unit may acquire the judgment results of the state at multiple locations of the solar power generation system, and the display processing unit may further display, in the display processing, identification information of the location where the state, which is the judgment result, occurred on the map.

[0019] With this configuration, the administrator can grasp the judgment result of the state of the photovoltaic power generation system and the identification information of the location where the state of the judgment result occurred on the same screen. In addition, since the location where the state indicated by the judgment result occurred can be easily identified, maintenance of the location can be performed more efficiently.

[0020] (6) In any of (1) to (5) above, the acquisition unit may acquire the judgment results of the state at multiple locations of the solar power generation system and operation information indicating an operation content for specifying a position on the map, and the display processing unit may perform the display process to superimpose on the map, the judgment result at a location of the solar power generation system corresponding to the specified position, among the judgment results of the state at multiple locations of the solar power generation system acquired by the acquisition unit, based on the operation information acquired by the acquisition unit.

[0021] With this configuration, for example, if a determined condition occurs at a location on a map specified by an administrator or the like, the determined condition can be displayed as a pop-up, etc., so that the condition at that location can be grasped in even greater detail even on a small screen such as that of a mobile information terminal device.

[0022] (7) A display processing device according to an embodiment of the present disclosure is a display processing device used in a solar power generation system equipped with a power generation unit, and includes an acquisition unit that acquires monitoring results of the power generation unit and judgment results of the status of the solar power generation system, and a display processing unit that performs display processing that displays a video showing time-series changes in the amount of power generated by the power generation unit on a map including the power generation unit, in association with the judgment results, based on the monitoring results and the judgment results acquired by the acquisition unit.

[0023] With this configuration, it is possible to provide a display content in which a video showing the time-series change in the amount of power generated by the power generating unit on a map, which is created based on the content related to the monitoring results of the power generating unit in the photovoltaic power generation system, is associated with the judgment result of the status of the photovoltaic power generation system, so that by referring to the time-series change and the judgment result, for example, when there is a problem with the amount of power generated, the cause can be easily analyzed. Also, the manager, etc. can easily visually recognize the time-series change on the map. Therefore, it is possible to display a more useful screen for understanding the status of the photovoltaic power generation system.

[0024] (8) In the above item (7), the display processing unit may change a display mode of the power generation unit depending on the amount of power generation in the display process.

[0025] With this configuration, power generation units with high power generation and power generation units with low power generation within the same time period can be displayed in different ways on the map, making it easier to identify power generation units and time periods with problems with power generation, and allowing for more efficient analysis of the causes and planning of countermeasures.

[0026] (9) A display processing device according to an embodiment of the present disclosure is a display processing device used in a solar power generation system equipped with a power generation unit, and includes an acquisition unit that acquires a judgment result of the status of the solar power generation system, and a display processing unit that performs display processing to display the judgment result for each date based on the judgment result acquired by the acquisition unit, and to display the weather on the dates.

[0027] With this configuration, it is possible to provide a display that associates the determination result of the state of the photovoltaic power generation system for each date with the weather on that date, so that the manager or the like can easily visually recognize, for example, on a calendar, the occurrence frequency of a predetermined state in the photovoltaic power generation system and the relationship between the predetermined state and the weather. Therefore, it is possible to display a more useful screen for understanding the state of the photovoltaic power generation system.

[0028] (10) In (9) above, the display processing unit may acquire the judgment results of the state at multiple locations of the solar power generation system, and the display processing unit may further display, in the display process, the type of judgment state that is the judgment result and the number of locations where the judgment state occurred on the date when the state of the solar power generation system is in the judgment state.

[0029] With this configuration, an administrator or the like can grasp, on the same screen, the date on which the solar power generation system is in the state indicated by the judgment result, the weather on that date, the type of state, and the number of locations where that state is occurring. Therefore, even on a small screen such as that of a mobile information terminal device, the state of the solar power generation system can be grasped in even more detail.

[0030] (11) A display processing method according to an embodiment of the present disclosure is a display processing method in a display processing device used in a solar power generation system equipped with a power generation unit, and includes a step of acquiring a judgment result of the status of the solar power generation system, and a step of performing display processing to display the acquired judgment result on a map including the power generation unit.

[0031] This method makes it possible to provide a display content that associates a map including the power generation unit with the determination result of the state of the photovoltaic power generation system, so that a manager or the like can easily visually recognize on the map the location where a predetermined state, such as the location of an abnormality, has occurred. Therefore, it is possible to display a more useful screen for understanding the state of the photovoltaic power generation system.

[0032] (12) A display processing method according to an embodiment of the present disclosure is a display processing method in a display processing device used in a solar power generation system equipped with a power generation unit, and includes the steps of acquiring monitoring results of the power generation unit and judgment results of the status of the solar power generation system, and performing display processing of displaying a video showing time-series changes in the amount of power generated by the power generation unit on a map including the power generation unit, in association with the judgment results, based on the acquired monitoring results and judgment results.

[0033] This method makes it possible to provide a display content in which a video showing the time-series change in the amount of power generated by a power generating unit on a map, which is created based on the content related to the monitoring results of the power generating unit in the photovoltaic power generation system, is associated with the judgment result of the status of the photovoltaic power generation system, so that by referring to the time-series change and the judgment result, for example, when there is a problem with the amount of power generated, the cause can be easily analyzed. Also, a manager or the like can easily visually recognize the time-series change on the map. Therefore, a more useful screen for understanding the status of the photovoltaic power generation system can be displayed.

[0034] (13) A display processing method according to an embodiment of the present disclosure is a display processing method in a display processing device used in a solar power generation system equipped with a power generation unit, and includes the steps of acquiring a judgment result of the status of the solar power generation system, and performing display processing of displaying the judgment result for each date based on the acquired judgment result and displaying the weather on the dates.

[0035] This method makes it possible to provide a display that associates the determination result of the state of the photovoltaic power generation system for each date with the weather on that date, so that the manager or the like can easily visually recognize, for example, on a calendar, the occurrence frequency of a predetermined state in the photovoltaic power generation system and the relationship between the predetermined state and the weather. Therefore, it is possible to display a more useful screen for understanding the state of the photovoltaic power generation system.

[0036] (14) A display processing program according to an embodiment of the present disclosure is a display processing program used in a display processing device used in a solar power generation system equipped with a power generation unit, and is a program for causing a computer to function as an acquisition unit that acquires a judgment result of the status of the solar power generation system, and a display processing unit that performs display processing to display the judgment result acquired by the acquisition unit on a map including the power generation unit.

[0037] With this configuration, it is possible to provide a display content that associates a map including the power generation unit with the determination result of the state of the photovoltaic power generation system, so that the manager or the like can easily visually recognize the location of a predetermined state, such as the location of an abnormality, on the map. Therefore, it is possible to display a more useful screen for understanding the state of the photovoltaic power generation system.

[0038] (15) A display processing program according to an embodiment of the present disclosure is a display processing program used in a display processing device used in a solar power generation system equipped with a power generation unit, and is a program for causing a computer to function as an acquisition unit that acquires monitoring results of the power generation unit and judgment results of the status of the solar power generation system, and a display processing unit that performs display processing that displays a video showing time-series changes in the amount of power generated by the power generation unit on a map including the power generation unit, in association with the judgment results, based on the monitoring results and the judgment results acquired by the acquisition unit.

[0039] With this configuration, it is possible to provide a display content in which a video showing the time-series change in the amount of power generated by the power generating unit on a map, which is created based on the content related to the monitoring results of the power generating unit in the photovoltaic power generation system, is associated with the judgment result of the status of the photovoltaic power generation system, so that by referring to the time-series change and the judgment result, for example, when there is a problem with the amount of power generated, the cause can be easily analyzed. Also, the manager, etc. can easily visually recognize the time-series change on the map. Therefore, it is possible to display a more useful screen for understanding the status of the photovoltaic power generation system.

[0040] (16) A display processing program according to an embodiment of the present disclosure is a display processing program used in a display processing device used in a solar power generation system having a power generation unit, and is a program for causing a computer to function as an acquisition unit that acquires a judgment result of the status of the solar power generation system, and a processing unit that performs display processing that displays the judgment result for each date based on the judgment result acquired by the acquisition unit and displays the weather on the dates.

[0041] With this configuration, it is possible to provide a display that associates the determination result of the state of the photovoltaic power generation system for each date with the weather on that date, so that the manager or the like can easily visually recognize, for example, on a calendar, the occurrence frequency of a predetermined state in the photovoltaic power generation system and the relationship between the predetermined state and the weather. Therefore, it is possible to display a more useful screen for understanding the state of the photovoltaic power generation system.

[0042] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals, and the description thereof will not be repeated. In addition, at least some of the embodiments described below may be arbitrarily combined.

[0043] <First embodiment> [Solar power generation system configuration] Fig. 1 is a diagram showing a configuration of a photovoltaic power generation system according to a first embodiment of the present disclosure. Referring to Fig. 1, a photovoltaic power generation system 401 includes four PCS (Power Conditioning System) units 80 and a cubicle 6. The cubicle 6 includes a copper bar 73.

[0044] In FIG. 1, four PCS units 80 are representatively shown, but a greater or lesser number of PCS units 80 may be provided.

[0045] Fig. 2 is a diagram showing a configuration of a PCS unit according to the first embodiment of the present disclosure. Referring to Fig. 2, a PCS unit 80 includes four current collecting units 60 and a PCS (power conversion device) 8. The PCS 8 includes a copper bar 7 and a power conversion section 9.

[0046] In FIG. 2, four current collecting units 60 are representatively shown, but a greater or lesser number of current collecting units 60 may be provided.

[0047] Fig. 3 is a diagram showing a configuration of a current collecting unit according to the first embodiment of the present disclosure. Referring to Fig. 3, current collecting unit 60 includes four solar cell units 74 and a current collecting box 71. Current collecting box 71 has a copper bar 72.

[0048] In FIG. 3, four solar cell units 74 are representatively shown, but a greater or lesser number of solar cell units 74 may be provided.

[0049] Fig. 4 is a diagram showing a configuration of a solar cell unit according to the first embodiment of the present disclosure. Referring to Fig. 4, solar cell unit 74 includes four power generation units 78A, 78B, 78C, and 78D and a junction box 76. Hereinafter, each of power generation units 78A, 78B, 78C, and 78D will also be referred to as power generation unit 78.

[0050] In FIG. 4, four power generation units 78 are representatively shown, but a greater or lesser number of power generation units 78 may be provided.

[0051] The junction box 76 has copper bars 77. The power generation unit 78 has a solar cell panel 79. In this example, the power generation unit 78 is a string in which four solar cell panels 79 are connected in series.

[0052] In FIG. 4, four solar panels 79 are representatively shown, but a greater or lesser number of solar panels may be provided.

[0053] In the photovoltaic power generation system 401, output lines and aggregation lines, that is, power lines, from the multiple power generation units 78 are electrically connected to the PCS 8 shown in FIG.

[0054] More specifically, the output line 1 of the power generating unit 78 has a first end connected to the power generating unit 78 and a second end connected to the copper bar 77. The output lines 1 are aggregated into the aggregate line 5 via the copper bar 77. The copper bar 77 is provided, for example, inside the connection box 76.

[0055] When power generation unit 78 receives sunlight, it converts the energy of the received sunlight into DC power and outputs the converted DC power to output line 1.

[0056] 3 and 4, the aggregation line 5 has a first end connected to a copper bar 77 in a corresponding solar cell unit 74, and a second end connected to a copper bar 72. Each aggregation line 5 is aggregated into an aggregation line 2 via the copper bar 72. The copper bar 72 is provided inside a current collector box 71, for example.

[0057] Referring to Figures 1 to 4, in the solar power generation system 401, as described above, each output line 1 from multiple power generation units 78 is aggregated into an aggregated line 5, each aggregated line 5 is aggregated into an aggregated line 2, and each aggregated line 2 is electrically connected to a PCS 8.

[0058] More specifically, each aggregated line 2 has a first end connected to a copper bar 72 in a corresponding current collecting unit 60 and a second end connected to a copper bar 7. In the PCS 8, the internal line 3 has a first end connected to the copper bar 7 and a second end connected to a power converter 9.

[0059] In PCS8, for example, when power conversion unit 9 receives DC power generated in each power generation unit 78 via output line 1, copper bar 77, aggregation line 5, copper bar 72, aggregation line 2, copper bar 7 and internal line 3, it converts the received DC power into AC power and outputs it to aggregation line 4.

[0060] The aggregated line 4 has a first end connected to the power conversion unit 9 and a second end connected to the copper bar 73 .

[0061] In the cubicle 6, the AC power output from the power conversion unit 9 in each PCS 8 to each aggregation line 4 is output to the system via the copper bar 73.

[0062] [Configuration of the judgment system] Fig. 5 is a diagram showing a configuration of a determination system according to the first embodiment of the present disclosure. Referring to Fig. 5, a determination system 301 is used in a solar power generation system 401. The determination system 301 includes a management server 161, a plurality of monitoring devices 111, and a collection device 151.

[0063] 5 representatively shows four monitoring devices 111 provided corresponding to one current collecting unit 60, but more or fewer monitoring devices 111 may be provided. In addition, the determination system 301 includes one collecting device 151, but may include multiple collecting devices 151.

[0064] In the determination system 301, information from the sensor in the monitoring device 111 is transmitted to the collection device 151 periodically or irregularly.

[0065] The monitoring device 111 is provided, for example, in the power collecting unit 60. More specifically, four monitoring devices 111 are provided corresponding to the four solar cell units 74, respectively. Each monitoring device 111 is electrically connected, for example, to a corresponding output line 1 and aggregation line 5.

[0066] The monitoring device 111 monitors the power generation section 78 in the corresponding solar cell unit 74. For example, the monitoring device 111 measures the current of each output line 1 in the corresponding solar cell unit 74 using a sensor. Also, for example, the monitoring device 111 measures the voltage of each output line 1 in the corresponding solar cell unit 74 using a sensor.

[0067] The collecting device 151 collects the monitoring results from each monitoring device 111. The collecting device 151 is provided, for example, near the PCS 8. More specifically, the collecting device 151 is provided corresponding to the PCS 8 and is electrically connected to the copper bar 7 via the signal line 46.

[0068] The monitoring device 111 and the collecting device 151 transmit and receive information by performing power line communication (PLC) via the aggregation lines 2 and 5.

[0069] More specifically, each monitoring device 111 transmits monitoring results including measurements of the current and voltage on the corresponding output line.

[0070] The collection device 151 is capable of transmitting and receiving information via the aggregation lines 2 and 5. Specifically, the collection device 151 performs power line communication with the monitoring device 111 via, for example, the signal line 46 and the aggregation lines 2 and 5, and receives monitoring results from the monitoring device 111.

[0071] The collection device 151 transmits and receives information to and from other devices such as a management server 161 via a network 501 such as the Internet.

[0072] [Monitoring device configuration] 6 is a diagram showing a configuration of a monitoring device in the determination system according to the first embodiment of the present disclosure, in which the inside of the connection box 76 is shown in more detail.

[0073] Referring to FIG. 6, the connection box 76 includes an aggregation section 91, switches 93A, 93B, 93C, and 93D, backflow prevention diodes 94A, 94B, 94C, and 94D, an output line 1, an aggregation line 5, a copper bar 77, and a SPD (Surge Protective Device) 23 which is a protective device.

[0074] Hereinafter, each of the switches 93A, 93B, 93C, and 93D will also be referred to as a switch 93, and each of the reverse current prevention diodes 94A, 94B, 94C, and 94D will also be referred to as a reverse current prevention diode 94.

[0075] Each of the output lines 1 includes positive output lines 1pa, 1pb, and 1pc, and negative output lines 1na and 1nb.

[0076] The aggregated line 5 includes a positive aggregated line 5p and a negative aggregated line 5n. The aggregated section 91 includes a copper bar 77 and aggregates output lines 1 from a plurality of power generating sections 78. The copper bar 77 has a positive copper bar 77p and a negative copper bar 77n.

[0077] Although not shown, the copper bars 72 in the current collection box 71 shown in FIG. 3 include a positive copper bar 72p and a negative copper bar 72n corresponding to the positive aggregated line 5p and the negative aggregated line 5n, respectively.

[0078] The reverse current prevention diode 94 is connected between the power generation unit 78 and the consolidation unit 91. More specifically, the positive output line 1pa has a first end connected to the corresponding power generation unit 78 and a second end connected to the corresponding switch 93. The positive output line 1pb has a first end connected to the corresponding switch 93 and a second end connected to the anode of the corresponding reverse current prevention diode 94. The positive output line 1pc has a first end connected to the cathode of the corresponding reverse current prevention diode 94 and a second end connected to the corresponding positive side copper bar 77p.

[0079] The negative side output line 1na has a first end connected to the corresponding power generating unit 78 and a second end connected to the corresponding switch 93. The negative side output line 1nb has a first end connected to the corresponding switch 93 and a second end connected to the negative side copper bar 77n.

[0080] The positive-side aggregated line 5p has a first end connected to the positive-side copper bar 77p and a second end connected to the positive-side copper bar 72p in the current collection box 71. The negative-side aggregated line 5n has a first end connected to the negative-side copper bar 77n and a second end connected to the negative-side copper bar 72n in the current collection box 71.

[0081] The monitoring device 111 includes an acquisition unit 11, a communication unit 14, a voltage sensor 17, a storage unit 18, a measurement unit 19, and a temperature sensor 21. The measurement unit 19 includes four current sensors 16.

[0082] The monitoring device 111 may further include a larger or smaller number of current sensors 16 depending on the number of output lines 1 .

[0083] The monitoring device 111 is provided, for example, near the power generation unit 78. Specifically, the monitoring device 111 is provided, for example, inside the connection box 76 in which the copper bar 77 to which the output line 1 to be measured is connected is provided. The monitoring device 111 may be provided outside the connection box 76.

[0084] The monitoring device 111 is electrically connected to the positive aggregated line 5p and the negative aggregated line 5n via a positive power line 26p and a negative power line 26n, respectively. Hereinafter, each of the positive power line 26p and the negative power line 26n will also be referred to as a power line 26.

[0085] Each current sensor 16 is, for example, a Hall element type current probe connected between the power generation unit 78 and the PCS 8. The current sensor 16 measures the current flowing through the corresponding negative output line 1n. The current sensor 16 outputs a signal of a level according to the measured current to the acquisition unit 11. The current sensor 16 may also measure the current flowing through the positive output line 1p.

[0086] The voltage sensor 17 measures, for example, the output voltage of the output line 1. More specifically, the voltage sensor 17 measures the voltage between the positive side copper bar 77p and the negative side copper bar 77n. The voltage sensor 17 outputs to the acquisition unit 11 a signal at a level corresponding to the measured voltage.

[0087] The temperature sensor 21 measures, for example, the temperature in the collection unit 91. The temperature sensor 21 outputs to the acquisition unit 11 a signal at a level corresponding to the measured temperature.

[0088] The SPD 23 is connected to the positive aggregate line 5p, the negative aggregate line 5n, and the ground node 24.

[0089] When a surge voltage, which is a momentary overvoltage caused by lightning or the like, is applied to the output circuit of the power generation unit 78 to which the SPD 23 is connected via the aggregation line 5, the SPD 23 protects the solar power generation system 401 and the monitoring device 111 by dissipating the surge voltage to the ground node.

[0090] The SPD 23 switches the connection state of the contacts depending on the state of the SPD 23. The acquisition unit 11 monitors the state of the SPD 23 by checking the connection state of the contacts of the SPD 23.

[0091] The acquisition unit 11 acquires the measurement result of the current C by the current sensor 16, the measurement result of the voltage V by the voltage sensor 17, the measurement result of the temperature T by the temperature sensor 21, and contact information indicating the state of the SPD .

[0092] The acquiring unit 11 acquires, for example, a current measurement value that is a measurement value of the current C by each current sensor 16 based on a signal output from each current sensor 16 during a predetermined acquisition period Pm. Also, the acquiring unit 11 acquires a voltage measurement value that is a measurement value of the voltage V by the voltage sensor 17 based on a signal output from the voltage sensor 17 during the acquisition period Pm. Also, the acquiring unit 11 acquires a temperature measurement value that is a measurement value of the temperature T by the temperature sensor 21 based on a signal output from the temperature sensor 21 during the acquisition period Pm. Also, the acquiring unit 11 monitors the state of the SPD 23 and acquires contact information during the acquisition period Pm.

[0093] The acquiring unit 11 acquires the current measurement values ​​by the current sensors 16, the voltage measurement values ​​by the voltage sensor 17, the voltage measurement values ​​by the temperature sensor 21, and the contact information at each acquisition time tm according to a predetermined acquisition cycle Cm. Then, the acquiring unit 11 stores the acquired monitoring results, i.e., the current measurement values, the voltage measurement values, the temperature measurement values, and the contact information, together with the acquisition time tm, in the storage unit 18. The acquisition cycle Cm is, for example, 10 minutes.

[0094] The communication unit 14 can perform power line communication via the aggregation line with a collection device 151 that collects monitoring results from a plurality of monitoring devices 111. Specifically, for example, every time the communication unit 14 receives a monitoring result from the acquisition unit 11, the communication unit 14 transmits the received monitoring result including the ID of its own monitoring device 111, the ID of the corresponding connection box 76, and the ID of each corresponding power generation unit 78 to the collection device 151 via the PCS 8. Note that the ID of the monitoring device 111 and the ID of the connection box 76 may be the same.

[0095] The collection device 151 collects the monitoring results of each monitoring device 111. More specifically, the collection device 151 transmits a plurality of monitoring results transmitted from each monitoring device 111 to the management server 161 in a lump.

[0096] [Administration Server Configuration] Fig. 7 is a diagram showing a configuration of a management server according to the first embodiment of the present disclosure. Referring to Fig. 7, management server 161 includes communication unit 31, determination unit 32, acquisition unit 33, display processing unit 34, and storage unit 35. A part or all of communication unit 31, determination unit 32, acquisition unit 33, and display processing unit 34 are realized, for example, by a processing circuit including one or more processors. Storage unit 35 is, for example, a non-volatile memory included in the processing circuit.

[0097] The acquisition unit 33 and the display processing unit 34 constitute a part or the whole of a display processing device 171. The display processing device 171 may be provided outside the management server 161.

[0098] The communication unit 31 acquires and stores the monitoring results of the solar power generation system 401. For example, the communication unit 31 acquires and stores the monitoring results of each power generation unit 78, which is an example of power generation unit information.

[0099] More specifically, for example, during a given period of one day, each time the communication unit 31 receives monitoring results of each power generation unit 78 from the collection device 151, the communication unit 31 stores the received monitoring results in the storage unit .

[0100] The determination unit 32 performs a determination process for determining the state of the photovoltaic power generation system 401 based on the power generation unit information acquired by the communication unit 31 .

[0101] More specifically, for example, when a specified daily processing timing, for example a specified time each day, arrives, the judgment unit 32 acquires from the memory unit 35 a plurality of monitoring results including acquisition times tm that belong to the period from 24 hours before the daily processing timing to the daily processing timing.

[0102] Then, the determination unit 32 performs a determination process to determine the state of at least one of the power generation unit 78, the connection box 76, and the PCS 8, which are targets of monitoring in the solar power generation system 401, based on the multiple monitoring results acquired from the storage unit 35. Then, the determination unit 32 stores, in the storage unit 35, determination information including the determination result (hereinafter, also referred to as the "determined state").

[0103] [Specific example of judgment process] (Short circuit judgement) The determination unit 32 performs a short circuit determination to determine whether or not there is an abnormality, such as a short circuit, in the output circuit of each power generation unit 78, based on the measurement result of the current sensor 16 included in the monitoring result.

[0104] More specifically, the determination unit 32 refers to the monitoring results stored in the memory unit 35 and determines whether or not an abnormality such as a short circuit has occurred in the output circuit of the power generation unit 78 based on the measurement results of the current sensor 16 included in the monitoring results. For example, the determination unit 32 refers to the monitoring results stored in the memory unit 35 and determines that an abnormality such as a wiring short circuit has occurred in the power generation unit 78 when there is a power generation unit 78 in which the measurement result of the current sensor 16 under the PCS 8, i.e., the current sensor 16 in the current collection unit 60 connected to the PCS 8, continues to be equal to or higher than the threshold value Th1 for a predetermined time T1 or more during a time period when the PCS 8 is not operating.

[0105] Then, when the judgment unit 32 judges that an abnormality has occurred in which a positive current flows due to a PN short circuit in the output circuit, for example, the judgment unit 32 stores in the memory unit 35 judgment information including the IDs of the connection box 76 and the multiple power generation units 78 included in the monitoring result, the maximum value of the measurement result of the current sensor 16 included in the monitoring result, and the short circuit judgment result indicating that the abnormality has occurred in the connection box 76.

[0106] Alternatively, if the judgment unit 32 judges that an abnormality has occurred in which a negative current flows due to a PN short circuit in the output circuit, the judgment unit 32 stores in the memory unit 35 judgment information including the IDs of the connection box 76 and the multiple power generation units 78 included in the monitoring result, the minimum value of the measurement results of the current sensor 16 included in the monitoring result, and a short circuit judgment result indicating that the abnormality has occurred in the connection box 76.

[0107] On the other hand, if the judgment unit 32 determines that no abnormality such as a short circuit has occurred in the output circuit of the power generation unit 78, it stores in the memory unit 35 judgment information including a short circuit judgment result indicating that no abnormality such as a short circuit has occurred.

[0108] (Disconnection detection) The determination unit 32 performs a disconnection determination to determine whether or not the DC cable connecting the multiple solar cell panels 79 in series in each power generation unit 78 is disconnected, based on the measurement result of the current sensor 16 included in the monitoring result.

[0109] More specifically, the judgment unit 32, for example, refers to the monitoring results stored in the memory unit 35 and judges that an abnormality such as a break in a DC cable has occurred in the target power generating unit if the measurement result of the current sensor 16 corresponding to the target power generating unit continues to be near zero for a predetermined time T2 or more during a time period in which the power generation power of the other power generating unit 78 different from the power generating unit 78 that is the subject of the break judgment (hereinafter also referred to as the "target power generating unit") is equal to or higher than a predetermined threshold. As an example, the other power generating unit 78 different from the target power generating unit is a power generating unit 78 that is connected to the same connection box 76 as the target power generating unit.

[0110] Here, the storage unit 35 stores, for example, a correspondence table Ta1 indicating the correspondence relationship between the ID of the current sensor 16 and the ID of the power generation unit 78. When the determination unit 32 determines that an abnormality such as a break in the DC cable has occurred, the determination unit 32 refers to the correspondence table Ta1 and stores in the storage unit 35 determination information including the ID of the corresponding power generation unit 78 and a break determination result indicating that an abnormality such as a break in the DC cable has occurred in the power generation unit 78.

[0111] On the other hand, if the time during which the measurement result of the current sensor 16 corresponding to the target power generation unit continues to be near zero during a time period during which the power generation power of a power generation unit 78 other than the target power generation unit is equal to or greater than the above-mentioned specified threshold is less than a specified time T2, the judgment unit 32 stores in the memory unit 35 judgment information including a short-circuit judgment result indicating that no abnormality such as a break in the DC cable has occurred.

[0112] (Reverse current prevention diode determination) The determining unit 32 performs a reverse current prevention diode determination to determine whether or not there is an abnormality in the reverse current prevention diode 94 based on the measurement result of the output current included in the monitoring result.

[0113] More specifically, the determination unit 32 refers to the monitoring results stored in the storage unit 35 and determines whether or not an abnormality such as a short circuit has occurred in the backflow prevention diode 94 based on the measurement results of the current sensor 16 included in the monitoring results. For example, the determination unit 32 refers to the monitoring results stored in the storage unit 35 and, when there is a power generation unit 78 in which the measurement results of the current sensor 16 under the control of the PCS 8 have remained below the threshold value Th2 for a predetermined time T3 or more, determines that an abnormality such as a short circuit has occurred in the backflow prevention diode 94 corresponding to the power generation unit 78. The threshold value Th2 is, for example, a negative value. Specifically, the threshold value Th2 is, for example, -2.0 amperes.

[0114] If the judgment unit 32 judges that an abnormality such as a short circuit has occurred, it stores in the memory unit 35 judgment information including, for example, the ID of each of the connection box 76 and the multiple power generation units 78 included in the monitoring result, the minimum value of the measurement results of the current sensor 16 included in the monitoring result, and the backflow prevention diode judgment result indicating that an abnormality such as a short circuit has occurred in the backflow prevention diode 94 in the connection box 76.

[0115] On the other hand, if the judgment unit 32 judges that no abnormality such as a short circuit has occurred in the reverse current prevention diode 94, it stores in the memory unit 35 judgment information including a reverse current prevention diode judgment result indicating that no abnormality such as a short circuit has occurred.

[0116] (Communication determination) The determining unit 32 performs communication determination to determine whether or not there is a communication abnormality in the monitoring device 111 based on the state in which the communication unit 31 acquires the monitoring result.

[0117] More specifically, for example, the communication unit 31 stores time information indicating the timing of acquisition of the monitoring result from the monitoring device 111 in the storage unit 35 together with the monitoring result.

[0118] The judgment unit 32 refers to the monitoring results stored in the memory unit 35 and the corresponding time information, and if the communication unit 31 has not continuously obtained monitoring results from the same monitoring device 111 for a predetermined time period T4 or more, it judges that a communication abnormality has occurred in the monitoring device 111.

[0119] Then, the determination unit 32 stores in the storage unit 35 determination information including, for example, the ID of the junction box 76 included in the monitoring result, the time period during which the communication abnormality is occurring (hereinafter also referred to as the "communication abnormality time period"), and the communication determination result indicating that a communication abnormality is occurring in the junction box 76. The communication abnormality time period is, for example, the time period from the time when a predetermined time T4 has elapsed after the most recent monitoring result is obtained to the time when a monitoring result is obtained again from the same monitoring device 111.

[0120] On the other hand, if the judgment unit 32 obtains monitoring results from the same monitoring device 111 within the specified time T4 for all monitoring devices 111, it stores in the memory unit 35 judgment information including a communication judgment result indicating that no communication abnormality has occurred.

[0121] (Temperature judgment) The determining unit 32 performs a temperature determination to determine whether or not there is a temperature abnormality in the collecting unit 91 based on the monitoring result.

[0122] More specifically, the judgment unit 32, for example, refers to the monitoring results stored in the memory unit 35, and if there is an aggregation unit 91 in which the temperature remains above the threshold value Th3 for a predetermined time T5 or more, judges that a high temperature abnormality has occurred in the aggregation unit 91.

[0123] Then, the judgment unit 32 stores in the memory unit 35 judgment information including, for example, the ID of the corresponding connection box 76, the maximum value of the measurement result of the temperature sensor 21 included in the monitoring result, and a temperature judgment result indicating that a high temperature abnormality has occurred in the connection box 76.

[0124] On the other hand, if there is no collection unit 91 where the temperature remains above the threshold value Th3 for a predetermined period of time T5 or longer, the judgment unit 32 stores in the memory unit 35 judgment information including a communication judgment result indicating that no high temperature abnormality has occurred in the collection unit 91.

[0125] (Power judgment) The determining unit 32 performs power determination to determine which power generating unit 78 is experiencing a decrease in generated power, based on the monitoring result.

[0126] More specifically, the judgment unit 32, for example, refers to the monitoring results stored in the memory unit 35 and judges the power generation units 78 whose power generation power is decreasing based on the measurement results of at least one of the output current and output voltage of each power generation unit 78.

[0127] Specifically, the determination unit 32, for example, refers to the monitoring results stored in the storage unit 35 and calculates the average power generation amount of each of the power generation units 78 in the photovoltaic power generation system 401 that are in the top 1 / 4 of each of the power generation units 78 (hereinafter also referred to as "reference cluster") in each time period into which a day is arbitrarily divided. The determination unit 32 calculates the average power generation amount in the time periods of, for example, morning, daytime, and evening. Here, morning is defined as 8:00 AM to 10:59 AM, daytime is defined as 11:00 AM to 1:59 PM, and evening is defined as 2:00 PM to 3:59 PM. Note that the classification method of the time periods is not limited to this and is set appropriately. For example, since the sunrise time and the sunset time change, the classification of the time periods is set according to the season.

[0128] The determining unit 32 determines a day on which the calculated average power generation amount is equal to or greater than a threshold value Th4 in any time period as a sunny day, and determines a day on which the calculated average power generation amount is less than the threshold value Th4 as a cloudy day.

[0129] On a sunny day, when there is a power generation unit 78 whose power generation is lower by more than a threshold value Th5 compared to other power generation units 78, the judgment unit 32 judges that the power generation power of the power generation unit 78 is lowered due to being affected by a shadow.

[0130] The determination unit 32 also calculates a power generation determination value for each of the morning, daytime, and evening time periods by dividing the calculated average power generation amount by the reference power generation amount for that time period.

[0131] As an example of calculating the reference power generation amount, the determination unit 32 classifies the power generation units 78 into a plurality of groups, and calculates the reference power generation amount based on the measurement result of at least one group selected from the plurality of groups.

[0132] Specifically, for example, the judgment unit 32 selects N (N is an integer greater than or equal to 2) reference clusters in descending order of average power generation in each of the morning, daytime, and evening time periods, calculates the average of the average power generation in each time period of each of the selected reference clusters, and sets the average as the reference power generation.

[0133] In addition, the judgment unit 32 may set the average power generation amount in the reference cluster having the largest average power generation amount from among the above-mentioned multiple groups as the reference power generation amount, or may set the median of the average power generation amounts from among the above-mentioned multiple groups as the reference power generation amount.

[0134] Then, the judgment unit 32, for example, refers to the correspondence table Ta1 and stores in the memory unit 35 judgment information including the ID of the power generation unit 78, the time period in which the power generation power has decreased by more than the threshold value Th5, the power generation judgment values ​​for the morning, daytime and evening time periods, and the power judgment result indicating that the power generation unit 78 is affected by the shadow.

[0135] Furthermore, on a cloudy day, when there is a power generation unit 78 whose power generation power is lower than that of the other power generation units 78 by more than the threshold value Th6, the determination unit 32 determines that deterioration of the solar cell panel 79 has occurred in the power generation unit 78. In this case, the determination unit 32 calculates a power generation determination value for each of the morning, daytime, and evening time periods.

[0136] Then, the judgment unit 32, for example, by referring to the correspondence table Ta1, stores in the memory unit 35 judgment information including the ID of the power generation unit 78, the power generation judgment values ​​for each of the morning, daytime and evening time periods, and the power judgment result indicating that deterioration of the solar panel 79 in the power generation unit 78 has occurred.

[0137] Furthermore, when there are multiple power generation units 78 whose power generation power has decreased by more than threshold value Th7 compared to other power generation units 78 during the operating time period of PCS8, for example, during the time period when output suppression control of PCS8 is active, the judgment unit 32 judges that cluster degradation of the solar panel 79 has occurred in each of the power generation units 78.

[0138] Then, the judgment unit 32, for example, by referring to the correspondence table Ta1, stores judgment information in the memory unit 35, the judgment information including the ID of each power generation unit 78 and a power judgment result indicating that cluster deterioration of the solar panel 79 has occurred in each power generation unit 78.

[0139] On the other hand, if there is no power generation unit 78 with reduced power generation, i.e., no power generation unit 78 that is affected by the shadow or has deteriorated solar panel 79 or cluster deterioration, the judgment unit 32 stores in the memory unit 35 judgment information including a power judgment result indicating that there is no power generation unit 78 with reduced power generation.

[0140] In addition to determining the deterioration of the solar panel 79, the determination unit 32 may further store in the memory unit 35 determination information including a power determination result indicating that deterioration over time is occurring in parts other than the solar panel 79 when there is a power generation unit 78 whose power generation power has decreased by more than threshold value Th8 in a transition of power generation power over a period of several months to years.

[0141] (Sensor judgment) The determination unit 32 performs sensor determination to determine the presence or absence of an abnormality in at least one of the current sensor 16, the voltage sensor 17, and the temperature sensor 21 based on the monitoring result.

[0142] More specifically, for example, the determination unit 32 refers to the monitoring results stored in the storage unit 35 and assumes that the determination unit 32 has continuously acquired, from the same monitoring device 111, monitoring results that do not include a measurement result of at least one of the current sensor 16, the voltage sensor 17, and the temperature sensor 21, or in which the measurement result has not changed for a predetermined time T6 or more, for a predetermined time T7 or more. In this case, the determination unit 32 determines that an abnormality has occurred in the corresponding sensor in the monitoring device 111.

[0143] Then, the judgment unit 32 stores in the memory unit 35 judgment information including, for example, the ID of the junction box 76 included in the monitoring result and a sensor judgment result indicating that a sensor abnormality has occurred in the junction box 76.

[0144] On the other hand, if there is no monitoring device 111 with a sensor abnormality, the determination unit 32 stores in the storage unit 35 the determination information including the sensor determination result indicating that no sensor abnormality has occurred.

[0145] (PCS judgment) The determination unit 32 performs a PCS determination to determine whether or not there is an abnormality in the PCS 8 based on the measurement result of the current sensor 16 included in the monitoring result.

[0146] More specifically, the determination unit 32 refers to the monitoring results stored in the storage unit 35 and determines whether or not an abnormality such as a stop has occurred in the PCS 8 based on the measurement results of the current sensors 16 included in the monitoring results. For example, the determination unit 32 refers to the monitoring results stored in the storage unit 35 and determines that the PCS 8 has stopped when the measurement results of all the current sensors 16 in the monitoring device 111 under the control of the collecting device 151, i.e., the monitoring device 111 that transmits the monitoring results to the collecting device 151, are equal to or less than the threshold value Th9 during the operating time period of the PCS 8. Then, when the determination unit 32 determines that an abnormality such as a stop has occurred, it stores in the storage unit 35 determination information including, for example, the ID of the PCS 8 corresponding to the connection box 76 and the multiple power generation units 78 included in the monitoring results, the time period during which the abnormality has occurred (hereinafter also referred to as the "PCS abnormal time period"), and a PCS determination result indicating that an abnormality such as a stop has occurred in the PCS 8. The PCS abnormal time period is, for example, a time period from the time when the measurement results of all the current sensors 16 become equal to or less than the threshold value Th9 to the time when the measurement results exceed the threshold value Th9.

[0147] On the other hand, when the determination unit 32 determines that no abnormality such as a stop has occurred in the PCS 8, the determination unit 32 stores in the storage unit 35 determination information including a PCS determination result indicating that no abnormality such as a stop has occurred.

[0148] (SPD judgement) The determination unit 32 performs PCS determination to determine whether or not there is an abnormality in the SPD 23, based on the contact point information included in the monitoring result.

[0149] More specifically, the determination unit 32 refers to the monitoring results stored in the storage unit 35 and determines whether or not an abnormality such as an open fault has occurred in the SPD 23 based on contact information included in the monitoring results. If the determination unit 32 determines that an abnormality such as an open fault has occurred, the determination unit 32 stores in the storage unit 35 determination information including, for example, the IDs of the junction box 76 and the plurality of power generation units 78 included in the monitoring results, and an SPD determination result indicating that an abnormality such as an open fault has occurred in the junction box 76.

[0150] On the other hand, when the determination unit 32 determines that no abnormality such as an open circuit fault has occurred in the SPD 23, the determination unit 32 stores in the storage unit 35 determination information including an SPD determination result indicating that no abnormality such as an open circuit fault has occurred.

[0151] The determination unit 32 may be configured not to perform at least one of the above-mentioned determinations, or may be configured to perform other determinations in addition to the above-mentioned determinations.

[0152] [Status display process] The display processing unit 34 performs a status display process to display the result of the determination by the determination unit 32 on a map MP including the power generation unit 78, the junction box 76, and the PCS 8. The status display process is an example of a display process.

[0153] More specifically, for example, the display processing unit 34 displays a screen G0 on a display device (not shown) for the user to input a period for which the determination results are to be displayed (hereinafter also referred to as a "display target period"). With the screen G0 displayed on the display device, the user designates, for example, a period of one day or two or more days as the display target period.

[0154] For example, the acquisition unit 33 acquires operation information indicating an operation by a user on a screen displayed on a display device.

[0155] More specifically, for example, in a state where the screen G0 is displayed on the display device, the acquisition unit 33 acquires operation information D0 indicating the operation content that specifies the display target period.

[0156] For example, the acquisition unit 33 further acquires the determination result of the state of the solar power generation system 401 and the monitoring result of the power generation unit 78 corresponding to the determination result.

[0157] More specifically, for example, when the acquisition unit 33 acquires the operation information D0, the acquisition unit 33 acquires from the storage unit 35 the determination information and the power generation unit information corresponding to the determination information during the display target period indicated by the acquired operation information D0.

[0158] For example, the acquisition unit 33 acquires the determination results of the states at multiple locations of the photovoltaic power generation system 401 from the storage unit 35. Specifically, the acquisition unit 33 acquires determination information including the respective determination results for multiple monitoring targets from the storage unit 35. Also, for example, the acquisition unit 33 acquires power generation unit information at multiple timings included in a predetermined period of one day.

[0159] For example, when the display target period indicated by the operation information D0 is one day, the acquisition unit 33 acquires from the storage unit 35 one piece of determination information corresponding to the display target period and one piece of power generation unit information corresponding to the determination information.

[0160] Alternatively, for example, when the display target period indicated by the operation information D0 includes multiple dates, the acquisition unit 33 acquires multiple pieces of judgment information corresponding to the multiple dates and multiple pieces of power generation unit information corresponding to the multiple judgment information from the storage unit 35. That is, the acquisition unit 33 acquires the judgment information and the power generation unit information for each day in the display target period from the storage unit 35.

[0161] Then, the acquisition unit 33 outputs the acquired determination information and power generation unit information to the display processing unit 34.

[0162] (Area R11) In the state display process, the display processing unit 34 displays the determination result of the state of the photovoltaic power generation system 401 acquired by the acquisition unit 33 on the map MP.

[0163] More specifically, for example, when the display processing unit 34 receives the determination information and the power generation unit information from the acquisition unit 33, it displays a screen G1 including a map MP on a display device (not shown). The display device may be directly connected to the management server 161, or may be connected to the management server 161 via a network 501.

[0164] Fig. 8 is a diagram showing an example of a screen displayed by the status display process by the management server according to the first embodiment of the present disclosure. Fig. 9 and Fig. 10 are diagrams showing other examples of a screen displayed by the status display process by the management server according to the first embodiment of the present disclosure.

[0165] 8 to 10, screen G1 includes an area R11 and an area R12. Area R11 indicates position information of a monitoring target on map MP.

[0166] More specifically, the memory unit 35 stores, for example, a correspondence table Ta2 indicating the correspondence between the position information on the map MP and the ID for each of the multiple power generation units 78, the multiple connection boxes 76, and the multiple PCSs 8.

[0167] The display processing unit 34 refers to the correspondence table Ta2 and displays in the region R11 a map MP showing part or all of the area in which the power generation units 78, the junction boxes 76, and the PCSs 8 are arranged.

[0168] When the judgment result included in the judgment information from the acquisition unit 33 indicates that an abnormality has occurred in the monitored object, the display processing unit 34 displays the monitored object on the map MP in a display mode different from that of other monitored objects that are not experiencing abnormalities.

[0169] For example, on the screen G1, the display processing unit 34 changes the display mode of the portion on the map MP that corresponds to the determination result according to the type of the determination result.

[0170] More specifically, the display processing unit 34 changes the display mode of the monitored object on the map MP depending on whether the abnormality occurring in the monitored object is serious or minor.

[0171] Specifically, for example, the display processing unit 34 fills in the map MP with red any monitoring object having a serious abnormality, with gray any monitoring object having a minor abnormality, and with no filling in any monitoring object having no abnormality. Note that in Figs. 8 to 10, red filling is indicated by black filling, and gray filling is indicated by diagonal hatching.

[0172] Here, a serious abnormality is an abnormality that may lead to a secondary disaster such as a fire, such as a short circuit in the output circuit of the power generation unit 78. A minor abnormality is an abnormality that is unlikely to immediately lead to a major problem, such as deterioration over time.

[0173] The importance level, such as "major" or "minor," may be set arbitrarily by the user. For example, the user can set the importance level for each type of abnormality in a table Ta3 or the like that lists the types of abnormalities.

[0174] In this case, the determination unit 32 determines that an abnormality of a type whose importance is set higher than a predetermined standard in the table Ta3 is a serious abnormality, and determines that an abnormality of a type whose importance is set lower than a predetermined standard in the table Ta3 is a minor abnormality.

[0175] (Display of judgment result) For example, the acquisition unit 33 further acquires operation information D1 indicating the operation content of designating a position on the map MP while the screen G1 is being displayed on the display device.

[0176] Specifically, for example, while the screen G1 is displayed on the display device, the acquisition unit 33 acquires an instruction to display the determination result corresponding to the monitoring target having an abnormality (hereinafter also referred to as a "determination display instruction") and operation information D1 indicating the position of the monitoring target on the map MP. The acquisition unit 33 outputs the acquired operation information D1 to the display processing unit 34.

[0177] For example, in the status display process, based on the operation information D1 acquired by the acquisition unit 33, the display processing unit 34 superimposes on the map MP the judgment result at a location of the solar power generation system 401 corresponding to a position specified on the map MP, among the status judgment results at multiple locations of the solar power generation system 401 acquired by the acquisition unit 33.

[0178] More specifically, for example, when the display processing unit 34 receives operation information D1 from the acquisition unit 33, it displays in a pop-up on the map MP the type of the determination result for the monitoring target corresponding to the position indicated by the operation information D1.

[0179] Specifically, for example, it is assumed that the user operates the mouse, keyboard, or the like to move the pointer P to a position in area R11 of screen G1 where the pointer P overlaps with a monitoring target in which an abnormality is occurring.

[0180] In this case, the acquisition unit 33 acquires operation information D1 indicating the position of the monitoring target selected by the pointer P, and outputs the acquired operation information D1 to the display processing unit .

[0181] When the display processing unit 34 receives the operation information D1 from the acquisition unit 33, it selects, from the determination information received from the acquisition unit 33, determination information including a determination result for a monitoring target corresponding to the position indicated by the operation information D1. Then, the display processing unit 34 checks the determination result included in the acquired determination information, and displays a pop-up explanation field indicating the name of the corresponding abnormality.

[0182] When there are a plurality of pieces of determination information including a determination result for a monitoring target corresponding to the position indicated by the operation information D1, the display processing unit 34 may pop up an explanation field showing the name of an abnormality corresponding to the determination result included in each piece of determination information, that is, a plurality of names. Furthermore, the display processing unit 34 may further pop up an explanation field showing the latest date among a plurality of dates corresponding to each of the plurality of pieces of determination information, in addition to the plurality of names.

[0183] Furthermore, for example, in the state display process, the display processing unit 34 further displays, on the map MP, identification information of the location where the state, which is the determination result, has occurred.

[0184] More specifically, the display processing unit 34 further displays the ID included in the determination information acquired from the storage unit 35 in the explanation field showing the name of the abnormality.

[0185] (a) When the power generating unit 78 in which the DC cable is disconnected is selected In the example shown in Figure 8, when the user moves the pointer P to a position overlapping with the power generation unit 78 of ID "PCS102-16-ch01" where a DC cable break has occurred, the display processing unit 34 displays a pop-up explanation field S21 showing the name of the abnormality "String break" and the ID.

[0186] (b) When the junction box 76 in which a communication error is occurring is selected When the user moves the pointer P to a position overlapping with the connection box 76 of the ID "PCS102-14" in which a communication abnormality is occurring, the display processing unit 34 displays a pop-up explanation field S22 showing the name of the abnormality "Device Abnormality" and the ID.

[0187] (c) When a PCS8 that is experiencing an abnormality such as a stoppage is selected When the user moves the pointer P to a position overlapping with the PCS8 of the ID "PCS101-00" in which an abnormality such as a shutdown has occurred, the display processing unit 34 displays a pop-up explanation field S23 showing the name of the abnormality "PCS stopped" and the ID.

[0188] (d) When the power generating unit 78 that is affected by the shadow is selected When the user moves the pointer P to a position overlapping with the power generation unit 78 with the ID "PCS101-15-ch05" that is affected by the shadow, the display processing unit 34 displays a pop-up explanation field S24 showing the name of the abnormality "Shadow Determination" and the ID.

[0189] (e) When the power generating unit 78 in which a short circuit occurs is selected In the example shown in Figure 9, when the user moves the pointer P to a position overlapping with the power generation unit 78 of ID "PCS101-04-ch02" in which an abnormality has occurred in which a negative current flows due to a short circuit between PN and the backflow prevention diode 94 has a short circuit, the display processing unit 34 displays a pop-up display of the name of the abnormality "Short circuit between PN (negative current)" and "Short circuit of the backflow prevention diode" as well as an explanation field S25 indicating the ID.

[0190] In addition, when the user moves the pointer P to a position overlapping with the power generation unit 78 of ID "PCS101-11-ch03" in which an abnormality has occurred in which a positive current is flowing due to a short circuit between PN, the display processing unit 34 pops up an explanation field S26 showing the name of the abnormality "PN short circuit (positive current)".

[0191] (f) When the junction box 76 having a temperature abnormality is selected In addition, when the user moves the pointer P to a position overlapping with the connection box 76 with the ID "PCS101-07" in which a high temperature abnormality is occurring, the display processing unit 34 pops up an explanation field S27 showing the name of the abnormality "High Temperature Abnormality" and the ID.

[0192] (g) When a power generating unit 78 in which deterioration of a solar panel 79 has occurred is selected In addition, when the user moves the pointer P to a position overlapping with the power generation unit 78 of the ID "PCS102-02-ch05" where deterioration of the solar panel 79 is occurring, the display processing unit 34 pops up an explanation field S28 showing the name of the abnormality "Panel Deterioration" and the ID.

[0193] (h) When a junction box 76 containing a shorted SPD 23 is selected In the example shown in Figure 10, when the user moves the pointer P to a position overlapping with the connection box 76 of ID "PCS101-09" in which an abnormality is occurring in SPD 23, the display processing unit 34 displays a pop-up explanation field S29 showing the name of the abnormality "SPD abnormality" and the ID.

[0194] (i) When the power generating unit 78 that has deteriorated over time is selected When the user moves the pointer P to a position overlapping with the power generation unit 78 of ID "PCS102-04-ch05" where deterioration due to aging or the like is occurring in a part other than the solar panel 79, the display processing unit 34 displays a pop-up explanation field S30 showing the name of the abnormality "deterioration due to aging" and the ID.

[0195] (j) When the power generation unit 78 in which a sensor abnormality is occurring is selected When the user moves the pointer P to a position overlapping with the power generation unit 78 of the ID "PCS101-11-ch03" in which a sensor abnormality is occurring, the display processing unit 34 pops up an explanation field S31 showing the name of the abnormality "Sensor abnormality" and the ID.

[0196] (k) When a power generating unit 78 in which cluster deterioration is occurring is selected When the user moves the pointer P to a position overlapping with the power generation unit 78 of the ID "PCS101-14-ch06" in which cluster degradation of the solar panel 79 is occurring, the display processing unit 34 displays a pop-up explanation field S32 showing the name of the abnormality "Cluster Degradation" and the ID.

[0197] In the examples shown in Figs. 8 to 10, in order to simplify the explanation, a plurality of explanatory columns are displayed on one screen G1. For example, after displaying a certain explanatory column, if the user moves the pointer P on the map MP from a monitoring target corresponding to the explanatory column, or moves the pointer P to a monitoring target different from the relevant monitoring target, the display processing unit 34 hides the explanatory column. That is, one explanatory column is displayed on one screen G1. Note that the display processing unit 34 may be configured to, for example, display a certain explanatory column on the screen G1, and then continue to display the explanatory column for a predetermined period of time regardless of the position of the pointer P.

[0198] 7 and 8 again, for example, when the determination result of the state of the solar power generation system 401 indicates a specific state, the display processing unit 34 further displays on the map MP a time period during which the state of the solar power generation system 401 is in the specific state in the state display process. Here, the specific state is, for example, a state in which a predetermined abnormality occurs in the solar power generation system 401.

[0199] More specifically, for example, if the judgment result included in the judgment information obtained from the memory unit 35 indicates that a communication abnormality has occurred in the connection box 76, that an abnormality such as a stoppage has occurred in the PCS 8, or that the power generation unit 78 is affected by a shadow, the display processing unit 34 further displays the time period included in the judgment information in the explanation field.

[0200] Specifically, for example, the display processing unit 34 displays the communication abnormality time period included in the determination information acquired from the storage unit 35 in a description field S22 indicating "device abnormality." The display processing unit 34 displays the PCS abnormality time period included in the determination information acquired from the storage unit 35 in a description field S23 indicating "PCS stop."

[0201] Also, for example, when the time period included in the judgment information corresponding to the "shadow judgment" acquired from the storage unit 35 indicates the time period of the morning, daytime, or evening, the display processing unit 34 displays "morning shadow", "daytime shadow", or "evening shadow" in the explanation field S24, respectively. When the time period included in the judgment information indicates the time period of the morning and daytime, but does not indicate the time period of the evening, the display processing unit 34 displays "morning sun shadow" in the explanation field S24. When the time period included in the judgment information indicates the time period of the morning and evening, but does not indicate the time period of the day, the display processing unit 34 displays "morning sun shadow" in the explanation field S24. When the time period included in the judgment information indicates the time period of the daytime and evening, but does not indicate the time period of the morning, the display processing unit 34 displays "sunset sun shadow" in the explanation field S24. When the time period included in the judgment information indicates the time period of the morning, daytime, or evening, the display processing unit 34 displays "all day shadow" in the explanation field S24.

[0202] 8, the display processing unit 34 further displays the time period "8:00-15:00" in the explanation field S22 indicating "Device Abnormality". The display processing unit 34 further displays the time period "10:00-14:00" in the explanation field S23 indicating "PCS Stop". The display processing unit 34 further displays the time period "Morning and Evening Shadows" in the explanation field S24 indicating "Shadow Determination".

[0203] For example, when the judgment result of the state of the solar power generation system 401 indicates a specific state, in the state display process, the display processing unit 34 further displays on the map MP the power generation unit information corresponding to the judgment result from among the power generation unit information at multiple timings acquired by the acquisition unit 33.

[0204] More specifically, if the judgment result included in the judgment information acquired by the acquisition unit 33 indicates, for example, that a PN short circuit has occurred, that the reverse current prevention diode 94 has been short-circuited, that a high temperature abnormality has occurred in the connection box 76, that the power generation unit 78 is affected by a shadow, or that deterioration has occurred in the solar panel 79, the display processing unit 34 further displays power generation unit information corresponding to the judgment result in the explanation field.

[0205] Specifically, for example, when the judgment result included in the judgment information indicates that an abnormality has occurred in which a positive current flows due to a PN short circuit, the display processing unit 34 further displays, in the explanation field, the maximum value of the measurement result of the current sensor 16 included in the judgment information.

[0206] For example, when the judgment result included in the judgment information indicates that an abnormality has occurred in which a negative current flows due to a PN short circuit, the display processing unit 34 further displays, in the explanation field, the minimum value of the measurement result of the current sensor 16 included in the judgment information.

[0207] For example, when the judgment result included in the judgment information indicates that a short circuit has occurred in the reverse current prevention diode 94, the display processing unit 34 further displays in the explanation field the minimum value of the measurement result of the current sensor 16 included in the judgment information.

[0208] For example, if the judgment result included in the judgment information indicates that the power generation unit 78 is affected by a shadow or that deterioration of the solar panel 79 has occurred, the display processing unit 34 further displays in the explanation field the power generation judgment values ​​for each of the morning, daytime, and evening time periods included in the judgment information.

[0209] For example, when the judgment result included in the judgment information indicates that a high temperature abnormality has occurred in the connection box 76, the display processing unit 34 further displays in the explanation field the maximum value of the measurement result of the temperature sensor 21 included in the judgment information.

[0210] In the example shown in Figure 8, the display processing unit 34 further displays in the explanation field S24 indicating "Shadow Determination" a power generation determination value of "71.5"% for the morning time period, a power generation determination value of "89.9"% for the daytime time period, and a power generation determination value of "61.8"% for the evening time period.

[0211] In the example shown in FIG. 9, the display processing unit 34 further displays the minimum negative current value "-3.1A" and the minimum short circuit current value "-3.1A" in the explanation field S25 indicating "PN short circuit (negative current)" and "reverse current prevention diode short circuit". The display processing unit 34 further displays the maximum temperature "92°C" in the explanation field S26 indicating "high temperature abnormality". The display processing unit 34 further displays the maximum positive current value "3.2A" in the explanation field S27 indicating "PN short circuit (positive current)". Furthermore, the display processing unit 34 further displays the power generation determination value in the morning time zone of "71.5", the power generation determination value in the daytime time zone of "69.2", and the power generation determination value in the evening time zone of "73.8" in the explanation field S28 indicating "panel deterioration".

[0212] (Area R12) 7 to 10, the display processing unit 34 displays, for example, the ID of the power generation unit 78, junction box 76, or PCS 8 in which an abnormality has occurred, and the details of the abnormality in the area R12 below the map MP. More specifically, when a serious abnormality has occurred, the display processing unit 34 displays the ID of the corresponding power generation unit 78, junction box 76, or PCS 8 against a red background in the area R12. Also, when a minor abnormality has occurred, the display processing unit 34 displays the ID of the corresponding power generation unit 78, junction box 76, or PCS 8 against a gray background in the area R12.

[0213] 8, in region R12, it is displayed that the power generation unit 78 with ID "PCS102-16-ch01", the PCS8 with ID "PCS101-00", and the connection box 76 with ID "PCS102-14" displayed against a red background are experiencing serious abnormalities such as DC cable disconnection, stoppage, and communication abnormalities. In addition, it is displayed that the power generation unit 78 with ID "PCS101-15-ch05" displayed against a gray background is being affected by a shadow, which is a minor abnormality.

[0214] 9, in the region R12, it is displayed that the power generating unit 78 with ID "PCS101-04-ch02" has a serious abnormality of a short circuit between PN and a short circuit in the reverse current prevention diode 94. It is also displayed that the power generating unit 78 with ID "PCS101-11-ch03" and the junction box 76 with ID "PCS101-07" have a serious abnormality of a short circuit between PN and a high temperature abnormality. It is also displayed that the power generating unit 78 with ID "PCS102-02-ch05", which is displayed against a gray background, has a minor abnormality of deterioration of the solar panel 79.

[0215] 10, in the region R12, it is displayed that a serious abnormality in the SPD 23 has occurred in the connection box 76 with ID "PCS101-09." In addition, it is displayed that minor abnormalities such as deterioration of the solar panel 79, sensor abnormality, and cluster deterioration of the solar panel 79 have occurred in the power generation unit 78 with ID "PCS102-04-ch05," the power generation unit 78 with ID "PCS101-11-ch03," and the power generation unit 78 with ID "PCS101-14-ch06," which are displayed against a gray background.

[0216] [Operation flow] FIG. 11 is a flowchart defining an operation procedure when the management server according to the first embodiment of the present disclosure performs the determination process.

[0217] 11, first, the management server 161 acquires power generation unit information from the collection device 151 and stores it in the storage unit 35 (step S101) until the daily processing timing arrives (NO in step S102).

[0218] Next, when the daily processing timing arrives (YES in step S102), the management server 161 performs a determination process to determine the state of the photovoltaic power generation system 401 based on the power generation unit information for a certain day stored in the storage unit 35 (step S103).

[0219] Next, the management server 161 stores the determination information indicating the determination result in the storage unit 35 (step S104).

[0220] FIG. 12 is a flowchart defining an operation procedure when the management server according to the first embodiment of the present disclosure performs the status display process.

[0221] 12, first, management server 161 waits for a user's operation to specify a display target period on screen G0 (NO in step S111).

[0222] Next, when the user performs an operation to specify a display target period (YES in step S111), the management server 161 acquires the judgment information for each day in the specified display target period from the storage unit 35 (step S112).

[0223] Next, the management server 161 creates a screen G1 including a map MP based on the acquired determination information (step S113).

[0224] Next, the management server 161 displays the created screen G1 on the display device (step S114).

[0225] Next, the management server 161 waits for a user operation on the currently displayed screen G1 (NO in step S115), and if an operation has been performed (YES in step S115), performs processing according to the content of the operation.

[0226] More specifically, when the user performs an operation indicating a status display instruction on the currently displayed screen G1 (YES in step S116), the management server 161 performs the status display process. Specifically, the management server 161 pops up an explanation field on the screen G1 showing the name of the abnormality in the monitored object in which the abnormality occurs and the ID of the monitored object. Furthermore, when the above-mentioned predetermined abnormality occurs in the monitored object, the management server 161 further displays at least one of the time period in which the predetermined abnormality occurs in the monitored object, the date on which the predetermined abnormality occurred, and the power generation unit information corresponding to the predetermined abnormality in the explanation field (step S117). Then, the management server 161 waits for a new operation from the user (NO in step S115).

[0227] On the other hand, if the user instructs the management server 161 to end the display of screen G1 (NO in step S116 and YES in step S118), the management server 161 ends the display of screen G1 (step S119) and waits for the user's operation to specify a new display target period on screen G0 (NO in step S111).

[0228] Furthermore, if there is another operation from the user (NO in step S116 and NO in step S118), the management server 161 waits for a new operation from the user (NO in step S115).

[0229] In the management server 161 according to the first embodiment of the present disclosure, the display processing unit 34 is configured to display on the map MP at least one of the time period during which a predetermined abnormality occurs in the monitored object, the power generation unit information corresponding to the monitored object in which the predetermined abnormality occurs, and the ID of the monitored object in which the abnormality occurs, in the status display process, but this is not limited to this. The display processing unit 34 may be configured not to display the time period, the power generation unit information, and the ID on the map MP, or may be configured to display other information other than the time period, the power generation unit information, and the ID on the map MP.

[0230] In addition, in the management server 161 according to the first embodiment of the present disclosure, the display processing unit 34 is configured to display the determination result of the monitoring target selected by the pointer P superimposed on the map MP in the status display process, but this is not limited to this. The display processing unit 34 may be configured not to display the determination result superimposed on the map MP. In this case, the display processing unit 34 displays the determination result in another location on the screen G1.

[0231] <Second embodiment> In the first embodiment of the present disclosure described above, the management server 161 displays the judgment results of the photovoltaic power generation system 401 on the map MP. In contrast to this, in the second embodiment of the present disclosure, the management server 161 displays the judgment results for each date, and also displays the weather on the date. In addition, the management server 161 displays a video showing the time-series change in the amount of power generated by the power generation unit 78 on the map MP. Contents other than those described below are the same as those of the management server 161 according to the first embodiment.

[0232] [Counting the number of occurrences of each anomaly in a given period] 7, the display processing unit 34 counts the total number of occurrences for each type of abnormality in a predetermined period. Specifically, for example, the acquisition unit 33 acquires operation information D10 indicating an operation content that specifies a display target period, for example, the past one month, and outputs the acquired operation information D0 to the display processing unit 34.

[0233] When the display processing unit 34 receives the operation information D10 from the acquisition unit 33, it counts the total number of occurrences for each type of abnormality during the past month indicated by the operation information D3.

[0234] Then, the display processing unit 34 stores in the storage unit 35 occurrence number information indicating the total number of occurrences for each type of abnormality within the past month and the dates on which the abnormalities occurred within the past month.

[0235] [Counting the number of abnormal occurrences on the target date] The display processing unit 34 counts the number of occurrence locations on a target date for each type of abnormality. Specifically, for example, when the display processing unit 34 determines that a certain abnormality has occurred on a certain date in the past month indicated by the operation information D10 from the acquisition unit 33, the display processing unit 34 counts the number of occurrence locations of the abnormality on the certain date.

[0236] Then, the display processing unit 34 stores in the storage unit 35 occurrence location information indicating the number of occurrence locations on a target date for each type of abnormality and the target date.

[0237] [Statistics display process] FIG. 13 is a diagram illustrating an example of a screen displayed by the statistics display process by the management server according to the second embodiment of the present disclosure.

[0238] 7 and 13, the display processing unit 34 performs a statistical display process to display the determination results of the state of the photovoltaic power generation system 401 acquired by the acquisition unit 33 for each date, and to display the weather on each date, based on the determination results. The statistical display process is an example of a display process.

[0239] More specifically, for example, when acquiring the above-mentioned operation information D10, the acquisition unit 33 acquires a plurality of pieces of determination information for the display target period indicated by the operation information D10 from the storage unit 35. Then, the acquisition unit 33 outputs the acquired plurality of pieces of determination information to the display processing unit 34.

[0240] When the display processing unit 34 receives the plurality of pieces of determination information from the acquisition unit 33, the display processing unit 34 displays, on the display device, a screen G2 including statistical data of the determination results of the state of the photovoltaic power generation system 401 based on the plurality of pieces of determination information. The screen G2 includes an area R21.

[0241] For example, the region R21 includes a graph showing the occurrence history of anomalies in the photovoltaic power generation system 401. Specifically, the display processing unit 34 displays in the region R21 a graph including a plurality of icons showing the occurrence dates of anomalies in the past month for each type of anomaly based on the occurrence number information received from the determination unit 32. In the example shown in FIG. 13, the display processing unit 34 displays that an anomaly of "string break" occurred on October 27, 2022, an anomaly of "PCS stop" occurred on November 7, 2022, an anomaly of "SPD anomaly" occurred on October 27, 2022, an anomaly of "shadow determination" occurred on October 26, 28, 29, and November 2, 3, 6, 9, 10, and 13, and an anomaly of "cluster degradation" occurred on October 26, 28-30, and November 4, 9, and 10, 2022.

[0242] In addition, the display processing unit 34 acquires weather information indicating the weather on each date in the past month, for example, by cooperating with a weather application or the like. Then, the display processing unit 34 displays the weather indicated by the acquired weather information below the corresponding date. Specifically, for example, the display processing unit 34 displays an icon indicating the weather below the corresponding date.

[0243] Furthermore, for example, on the screen G2 including statistical data on the determination results, the display processing unit 34 changes the display mode of the portion corresponding to the determination result depending on the type of the determination result.

[0244] More specifically, the display processing unit 34 changes the display mode for the relevant day depending on whether the abnormality that has occurred is serious or minor.

[0245] Specifically, for example, the display processing unit 34 fills in the days on which a serious abnormality occurs with red, fills in the days on which a minor abnormality occurs with gray, and displays the days on which no abnormality occurs without filling in. In Fig. 13, the red fill is shown by black fill, and the gray fill is shown by diagonal hatching.

[0246] Also, for example, on screen G2 including statistical data of the judgment results, the display processing unit 34 changes the display mode of the portion corresponding to the judgment result depending on the history of the judgment results by the judgment unit 32, that is, depending on the content of the statistical data, for example, the size of the statistical value.

[0247] More specifically, the display processing unit 34 checks the total number of occurrences in the past month and the dates on which the abnormalities occurred in the past month for each type of abnormality by referring to the occurrence number information stored in the memory unit 35. Then, the display processing unit 34 displays, for example, the number of days on which the abnormality occurred in the past month and a bar graph of a length corresponding to the abnormality occurrence rate for each type of abnormality based on the check result. In the example shown in Fig. 13, the number of days is displayed to the right of the name of the abnormality, and a bar graph of a length corresponding to the abnormality occurrence rate is displayed below the name of the abnormality.

[0248] Also, for example, the display processing unit 34 displays the total number of abnormality occurrences for all types during the past month based on the occurrence number information stored in the storage unit 35.

[0249] Specifically, for example, the display processing unit 34 refers to the occurrence count information stored in the memory unit 35, totals the number of occurrences during the past month for each type of abnormality indicated by the occurrence count information, and displays the total value in area R21 of the screen G2.

[0250] In the example shown in Figure 13, the display processing unit 34 displays the total number of abnormality occurrences of all types from October 24, 2022 to November 24, 2022, "340 cases," in the upper part of area R21.

[0251] Fig. 14 is a diagram showing an example of an explanation field displayed by a statistics display process by a management server according to a second embodiment of the present disclosure. Fig. 15 is a diagram showing another example of an explanation field displayed by a statistics display process by a management server according to a second embodiment of the present disclosure.

[0252] 14 and 15, for example, in the statistical display process, the display processing unit 34 further displays the type of judgment state and the number of locations where the judgment state occurs on the date on which the state of the solar power generation system 401 is in the judgment state.

[0253] More specifically, when the display processing unit 34 receives an instruction from the user to display details of a certain abnormality on the date on which the abnormality occurred (hereinafter also referred to as a "detailed display instruction") while screen G2 is being displayed on the display device, the display processing unit 34 displays the name of the abnormality and the number of locations where the abnormality occurred.

[0254] Specifically, for example, it is assumed that the user operates the mouse, keyboard, or the like to move the pointer P to a position in area R21 of screen G2 where the pointer P overlaps with the icon indicating the date on which the abnormality occurred.

[0255] In this case, the display processing unit 34 checks the number of occurrence locations of the abnormality corresponding to the icon selected by the pointer P by referring to the occurrence location information stored in the storage unit 35. Then, the display processing unit 34 pops up an explanation field showing the name of the abnormality corresponding to the icon, the date on which the abnormality occurred, and the number of occurrence locations of the abnormality.

[0256] In the example shown in FIG. 14, when the user moves the pointer P to a position overlapping with the icon C1, the display processing unit 34 displays a pop-up explanation field S41 indicating "string break", the date of occurrence "10 / 27", and the number of occurrences "1". When the user moves the pointer P to a position overlapping with the icon C2, the display processing unit 34 displays a pop-up explanation field S42 indicating "shadow determination", the date of occurrence "10 / 26", and the number of occurrences "297". When the user moves the pointer P to a position overlapping with the icon C3, the display processing unit 34 displays a pop-up explanation field S43 indicating "cluster deterioration", the date of occurrence "11 / 9", and the number of occurrences "1".

[0257] 15, when the user moves the pointer P to a position overlapping with the icon C4, the display processing unit 34 displays a pop-up explanation field S44 indicating "SPD abnormality", the date of occurrence "10 / 27", and the number of occurrences "1". In addition, when the user moves the pointer P to a position overlapping with the icon C5, the display processing unit 34 displays a pop-up explanation field S45 indicating "PCS stopped", the date of occurrence "11 / 7", and the number of occurrences "1".

[0258] [Video display processing] 7 and 13 again, the display processing unit 34 performs a moving image display process for displaying a moving image (hereinafter also referred to as a "power generation amount moving image") showing a time-series change in the amount of power generated by the power generation unit 78 on a map MP including the power generation unit 78 in association with the determination result, based on the monitoring result of the power generation unit 78 acquired by the acquisition unit 33 and the determination result of the state of the solar power generation system 401. The moving image display process is an example of a display process.

[0259] For example, in the moving image display process, the display processing unit 34 displays the determination result of the state of the solar power generation system 401 and a power generation amount moving image on one screen G2.

[0260] More specifically, when the display processing unit 34 receives an instruction from the user to display a video of the amount of power generation on the day when the ``shadow determination'' abnormality occurred (hereinafter also referred to as a ``video display instruction'') while the screen G2 is being displayed on the display device, the display processing unit 34 performs video display processing.

[0261] Specifically, for example, it is assumed that the user clicks on an icon indicating the date on which the "shadow judgment" abnormality occurred in region R21 of screen G2 shown in Fig. 13. Here, it is assumed that the user clicks on icon C6 indicating that the "shadow judgment" abnormality occurred on "11 / 6".

[0262] In this case, the acquisition unit 33 acquires from the storage unit 35 the monitoring result corresponding to the occurrence date indicated by the icon C6 among the monitoring results stored in the storage unit 35. Then, the acquisition unit 33 outputs the monitoring result to the display processing unit 34. Upon receiving the monitoring result from the acquisition unit 33, the display processing unit 34 calculates the amount of power generation for each predetermined time for each power generation unit 78 in the solar power generation system 401 based on the monitoring result.

[0263] Then, the display processing unit 34 creates a map MP by referring to the correspondence table Ta2 stored in the memory unit 35, and sequentially displays on the map MP the calculation results for the amount of power generated by each power generation unit 78 for each specified time period.

[0264] Fig. 16 is a diagram showing an example of a screen at a certain time constituting a moving image displayed by a moving image display process by a management server according to a second embodiment of the present disclosure. Fig. 17 is a diagram showing an example of a screen at another time constituting a moving image displayed by a moving image display process by a management server according to a second embodiment of the present disclosure. Fig. 16 shows the amount of power generated by each power generation unit 78 at a certain time t1. Fig. 17 shows the amount of power generated by each power generation unit 78 at a time t2 after time t1.

[0265] 16 and 17, for example, the display processing unit 34 displays a map MP in an area R22 below an area R21 of the screen G2. Also, for example, the display processing unit 34 changes the display mode of the power generation unit 78 depending on the amount of power generation in the video display process.

[0266] More specifically, for example, the display processing unit 34 displays the power generation units 78 on the map MP in different colors according to the amount of power generation. In the examples shown in Fig. 16 and Fig. 17, the colors are displayed according to the amount of power generation by using different patterns.

[0267] The power generation amounts indicated by patterns L1, L2, L3, L4, L5, L6 and L7 are, for example, values ​​from 0 W to 720 W, values ​​from 721 W to 1440 W, values ​​from 1441 W to 2160 W, values ​​from 2161 W to 2880 W, values ​​from 2881 W to 3600 W, values ​​from 3601 W to 4320 W and values ​​from 4321 W to 5100 W, respectively.

[0268] FIG. 18 is a flowchart defining an operation procedure when the management server according to the second embodiment of the present disclosure performs the statistics display process and the video display process.

[0269] The processes in steps S201 and S202 shown in FIG. 18 are similar to the processes in steps S111 and S112 shown in FIG.

[0270] Next, the management server 161 creates a screen G2 showing statistical data of the judgment results included in the judgment information based on the acquired judgment information (step S203).

[0271] Next, the management server 161 displays the created screen G2 on the display device (step S204).

[0272] Next, the management server 161 waits for a user operation on the currently displayed screen G2 (NO in step S205), and if an operation has been performed (YES in step S205), performs processing according to the content of the operation.

[0273] More specifically, when the user performs an operation indicating a detailed display instruction (YES in step S206), the management server 161 performs the above-mentioned statistical display process. Specifically, the management server 161 pops up an explanation field showing the name of the abnormality, the date on which the abnormality occurred, and the number of locations where the abnormality occurred on the screen G2 (step S207). Then, the management server 161 waits for a new operation from the user (NO in step S205).

[0274] On the other hand, when the management server 161 receives an operation indicating a video display instruction from the user (NO in step S206 and YES in step S208), the management server 161 performs the video display process. Specifically, the management server 161 displays a video showing the time-series change in the amount of power generated by each power generation unit 78 on the map MP of the screen G2 (step S209). Then, the management server 161 waits for a new operation from the user (NO in step S205).

[0275] If the user instructs the management server 161 to end the display of screen G2 (NO in step S206, NO in step S208 and YES in step S210), the management server 161 ends the display of screen G2 (step S211) and waits for the user's operation to specify a new display target period on screen G0 (NO in step S201).

[0276] Furthermore, if there has been another operation (NO in step S206, NO in step S208 and NO in step S210), the management server 161 waits for a new operation by the user (NO in step S205).

[0277] In the management server 161 according to the second embodiment of the present disclosure, the display processing unit 34 is configured to further display the type of the judgment state and the number of occurrences of the judgment state on the date when the state of the photovoltaic power generation system 401 is in the judgment state in the statistical display process, but is not limited to this. The display processing unit 34 may be configured not to display the type and the number of occurrences in the statistical display process, or may be configured to further display other information other than the type and the number of occurrences.

[0278] In addition, in the management server 161 according to the second embodiment of the present disclosure, the display processing unit 34 is configured to change the display mode of the power generation unit 78 depending on the amount of power generation in the video display process, but this is not limited to this. The display processing unit 34 may display each power generation unit 78 in the same display mode regardless of the amount of power generation. In this case, for example, the display processing unit 34 sequentially displays the value of the amount of power generation of each power generation unit 78 for each predetermined time in the region R21 of the screen G2.

[0279] Furthermore, some or all of the functions of the management server 161 according to the embodiment of the present disclosure may be provided by cloud computing. That is, the management server 161 according to the embodiment of the present disclosure may be a cloud server configured by a plurality of servers.

[0280] The above-described embodiments should be considered as illustrative and not restrictive in all respects. The scope of the present invention is defined by the claims, not by the above description, and is intended to include all modifications within the meaning and scope of the claims.

[0281] Each process (each function) of the above-mentioned embodiment is realized by a processing circuit including one or more processors. The above-mentioned processing circuit may be composed of an integrated circuit or the like in which one or more memories, various analog circuits, and various digital circuits are combined in addition to the above-mentioned one or more processors. The above-mentioned one or more memories store programs (instructions) that cause the above-mentioned one or more processors to execute each of the above-mentioned processes. The above-mentioned one or more processors may execute each of the above-mentioned processes according to the programs read from the above-mentioned one or more memories, or may execute each of the above-mentioned processes according to a logic circuit designed in advance to execute each of the above-mentioned processes. The above-mentioned processors may be various processors suitable for computer control, such as a CPU (Central Processing Unit), a GPU (Graphics Processing Unit), a DSP (Digital Signal Processor), an FPGA (Field Programmable Gate Array), and an ASIC (Application Specific Integrated Circuit). The above-mentioned physically separated processors may execute each of the above-mentioned processes in cooperation with each other. For example, the processors mounted on each of a plurality of physically separated computers may cooperate with each other via a network such as a LAN (Local Area Network), a WAN (Wide Area Network), the Internet, etc. The program may be installed in the memory from an external server device or the like via the network, or may be distributed in a state stored in a recording medium such as a CD-ROM (Compact Disc Read Only Memory), a DVD-ROM (Digital Versatile Disc Read Only Memory), or a semiconductor memory, and installed in the memory from the recording medium.

[0282] The above description includes the following additional features. [Appendix 1] A display processing device used in a solar power generation system including a power generation unit, an acquisition unit that acquires a determination result of the state of the photovoltaic power generation system; a display processing unit that performs a display process to display the determination result acquired by the acquisition unit on a map including the power generation unit, The display processing device, in the display process, wherein the display processing unit displays a plurality of types of the determination results on the map and changes the display manner of the portion on the map corresponding to the determination results depending on the type of the determination result.

[0283] [Appendix 2] A display processing device used in a solar power generation system including a power generation unit, an acquisition unit that acquires a monitoring result of the power generation unit and a determination result of a state of the photovoltaic power generation system; a display processing unit that performs display processing to display a video showing a time-series change in the amount of power generated by the power generation unit on a map including the power generation unit, in association with the determination result, based on the monitoring result and the determination result acquired by the acquisition unit, The display processing unit displays the determination result and the video on one screen in the display processing.

[0284] [Appendix 3] A display processing device used in a solar power generation system including a power generation unit, an acquisition unit that acquires a determination result of the state of the photovoltaic power generation system; a display processing unit that performs a display process to display the judgment results for each date based on the judgment results acquired by the acquisition unit, and to display the weather on the dates; The display processing device, wherein the display processing unit, in the display process, displays a plurality of types of the determination results for each date, and changes a display mode of a portion corresponding to the determination result depending on the type of the determination result.

[0285] [Appendix 4] A display processing device used in a solar power generation system including a power generation unit, A processing circuit is provided, The processing circuitry includes: Obtaining a determination result of the state of the photovoltaic power generation system; A display processing device that performs display processing for displaying the acquired determination result on a map including the power generation unit.

[0286] [Appendix 5] A display processing device used in a solar power generation system including a power generation unit, A processing circuit is provided, The processing circuitry includes: Obtaining a monitoring result of the power generation unit and a determination result of a state of the photovoltaic power generation system; A display processing device that performs display processing based on the acquired monitoring results and judgment results, in which a video showing the time-series changes in the amount of power generated by the power generation unit on a map including the power generation unit is displayed in association with the judgment results.

[0287] [Appendix 6] A display processing device used in a solar power generation system including a power generation unit, A processing circuit is provided, The processing circuitry includes: Obtaining a determination result of the state of the photovoltaic power generation system; A display processing device that performs display processing for displaying the judgment results for each date based on the acquired judgment results and displaying the weather on the dates. [Explanation of symbols]

[0288] 1,1pa,1pb,1pc,1na,1nb output lines 2,4,5,5p,5n Aggregation Line 3. Internal Lines 6. Cubicle 7,72,73,77,77p,77n Copper bars 8 PCS (Power Converter) 9 Power conversion section 11 Acquisition Department 14 Communications Department 16 Current Sensor 17 Voltage Sensor 18 Memory section 19 Measurement section 21 Temperature Sensor 23 SPD (Protection Device) 24 Ground Node 26,26p,26n power line 31 Communications Department 32 Judgment section 33 Acquisition Department 34 Display processing section 35 Storage section 60 Current collector unit 71 Current collector box 74 Solar cell unit 76 Junction box 78, 78A, 78B, 78C, 78D Power generation section 79 Solar Panels 80 PCS units 91 Consolidation Department 93,93A,93B,93C,93D Switch 94, 94A, 94B, 94C, 94D Reverse current prevention diode 101 Display processing device 111 Monitoring equipment 151 Collection Device 161 Management Server 171 Display processing device 301 Judgment System 401 Photovoltaic Power Generation System 501 Network G1, G2 screen P Pointer MP Map R11,R12,R21,R22 area S21 to S29, S30 to S32, S41 to S45 Explanation

Claims

1. A display processing device used in a solar power generation system including a power generation unit, an acquisition unit that acquires a determination result of the state of the photovoltaic power generation system; a display processing unit that performs display processing to display the determination result acquired by the acquisition unit on a map including the power generation unit.

2. The display processing device according to claim 1 , wherein, when the determination result indicates a specific state, in the display processing, the display processing unit further displays on the map a time period during which the state of the photovoltaic power generation system is the specific state.

3. The acquisition unit further acquires a monitoring result of the power generation unit corresponding to the determination result, The display processing device according to claim 1 , wherein the display processing unit, when the determination result indicates a specific state, further displays the monitoring result acquired by the acquisition unit on the map in the display process.

4. The display processing device according to claim 2 , wherein the specific state is a state in which an abnormality occurs in the solar power generation system.

5. The acquisition unit acquires the determination results of states at a plurality of points of the photovoltaic power generation system, The display processing device according to claim 1 , wherein the display processing unit further displays, in the display process, on the map, identification information of a location where the state, which is the determination result, has occurred.

6. the acquisition unit acquires the determination results of states at a plurality of points of the photovoltaic power generation system and operation information indicating an operation content for designating a position on the map, 3. The display processing device according to claim 1, wherein the display processing unit performs the display processing of superimposing on the map, the judgment result at a location of the solar power generation system corresponding to the specified position, among the judgment results of the state at multiple locations of the solar power generation system acquired by the acquisition unit, based on the operation information acquired by the acquisition unit.

7. A display processing device used in a solar power generation system including a power generation unit, an acquisition unit that acquires a monitoring result of the power generation unit and a determination result of a state of the photovoltaic power generation system; A display processing device comprising: a display processing unit that performs display processing that displays a video showing time-series changes in the amount of power generated by the power generation unit on a map including the power generation unit, in association with the judgment result, based on the monitoring result and the judgment result acquired by the acquisition unit.

8. The display processing device according to claim 7 , wherein the display processing unit changes a display mode of the power generation unit depending on the amount of power generation in the display process.

9. A display processing device used in a solar power generation system including a power generation unit, an acquisition unit that acquires a determination result of the state of the photovoltaic power generation system; a display processing unit that performs display processing to display the determination results for each date based on the determination results acquired by the acquisition unit, and to display the weather on the dates.

10. The acquisition unit acquires the determination results of states at a plurality of points of the photovoltaic power generation system, The display processing device according to claim 9 , wherein the display processing unit further displays, in the display process, a type of judgment state that is the judgment result and a number of locations where the judgment state occurs on the date on which the state of the solar power generation system is the judgment state.

11. A display processing method in a display processing device used in a solar power generation system including a power generation unit, Obtaining a determination result of the state of the photovoltaic power generation system; and performing a display process of displaying the acquired determination result on a map including the power generation unit.

12. A display processing method in a display processing device used in a solar power generation system including a power generation unit, Obtaining a monitoring result of the power generation unit and a determination result of a state of the solar power generation system; A display processing method including a step of performing display processing to display a video showing the time-series change in the amount of power generated by the power generation unit on a map including the power generation unit based on the acquired monitoring results and judgment results, in association with the judgment results.

13. A display processing method in a display processing device used in a solar power generation system including a power generation unit, Obtaining a determination result of the state of the photovoltaic power generation system; and performing a display process for displaying the judgment results for each date based on the acquired judgment results, and displaying the weather on the dates.

14. A display processing program used in a display processing device used in a solar power generation system including a power generation unit, Computer, an acquisition unit that acquires a determination result of the state of the photovoltaic power generation system; a display processing unit that performs a display process to display the determination result acquired by the acquisition unit on a map including the power generation unit; A display processing program that functions as a

15. A display processing program used in a display processing device used in a solar power generation system including a power generation unit, Computer, an acquisition unit that acquires a monitoring result of the power generation unit and a determination result of a state of the photovoltaic power generation system; a display processing unit that performs display processing to display a video showing a time-series change in the amount of power generated by the power generation unit on a map including the power generation unit, in association with the determination result, based on the monitoring result and the determination result acquired by the acquisition unit; A display processing program that functions as a

16. A display processing program used in a display processing device used in a solar power generation system including a power generation unit, Computer, an acquisition unit that acquires a determination result of the state of the photovoltaic power generation system; a display processing unit that performs a display process to display the determination results for each date based on the determination results acquired by the acquisition unit, and to display the weather on the dates; A display processing program that functions as a

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