JP6456123B2 - Solar panel alarm notification system - Google Patents

Description

  The present invention relates to a solar panel alarm notification system.

  2. Description of the Related Art Conventionally, there is known a solar panel alarm notification system that detects the occurrence of a malfunction such as a failure or deterioration in a solar panel and notifies an alarm based on the detection result. For example, in the solar panel alarm notification system described in Patent Document 1, it is possible to determine whether or not the measured value of the power generation amount of the solar panel is equal to or greater than a predetermined threshold value. The occurrence of an error is detected.

JP 2014-135304 A

  The solar panel alarm notification system as described above is required to reduce costs, improve defect detection accuracy, improve reliability, and the like.

  The present invention has been made in view of the above circumstances, and an object thereof is to provide a solar panel alarm notification system capable of realizing improvement in detection accuracy of defects and improvement in reliability while achieving cost reduction. To do.

  The solar panel alarm notification system of the present invention includes a receiving unit that receives power generation amount information of a plurality of solar panels, and a comparison amount calculation that calculates a predetermined comparison amount based on the power generation amount information for each of the plurality of solar panels. A means for identifying a pair of solar panels to be compared from among the plurality of solar panels based on the installation conditions of the solar panels stored in the storage means, and a pair of solar panels A determination unit that compares the comparison amount and determines whether or not to notify the alarm based on the comparison result; and a notification unit that instructs the user terminal to notify the alarm when the determination unit determines to notify the alarm. Prepare.

  In this solar panel alarm notification system, power generation amount information of a plurality of solar panels is collected and used. Specifically, the comparison amount is calculated based on the collected power generation amount information, and the comparison amount of the pair of solar panels specified based on the installation conditions is compared to determine whether or not to issue an alarm. To do. As described above, since it is determined whether or not an alarm is to be notified based on the aggregated power generation amount information, it is not necessary to provide a device for determining whether or not a malfunction has occurred for each solar panel as in the prior art. . For this reason, the system configuration can be simplified and the cost can be reduced. Moreover, it is not determined whether or not an alarm is notified based on power generation amount information from one solar panel, but an alarm is notified by comparing the comparison amounts of a pair of solar panels specified based on installation conditions. Since it is determined whether or not to do so, it is possible to improve defect detection accuracy and reliability. Therefore, according to this solar panel alarm notification system, it is possible to improve the detection accuracy of defects and improve the reliability while reducing costs.

  Further, in the solar panel alarm notification system of the present invention, the specifying means uses a plurality of solar panel installation positions stored as installation conditions in the storage means, and a pair of the specifying means based on the distance between the installation positions. The solar panel may be specified. Solar panels with close installation positions tend to have similar power generation. In this respect, according to this solar panel alarm notification system, since a pair of solar panels that should be close in installation position and have similar power generation amounts can be compared, it is possible to improve defect detection accuracy and improve reliability. Improvements can be realized.

  In the solar panel alarm notification system according to the present invention, the determination unit compares the comparison amount of the pair of solar panels and the distance between the installation positions of the pair of solar panels is smaller than a predetermined first set value. In this case, an average value of the comparison amounts in a predetermined first time width is compared, and a distance between the installation positions of the pair of solar panels is greater than or equal to the first set value and greater than the first set value. When the value is smaller than the set value, the average value of the comparison amount in the second time width longer than the first time width may be compared. Depending on the distance between installation positions, even a solar panel that exhibits the same behavior when viewed over a long period of time may exhibit different behavior when viewed over a short period of time. In this respect, according to this solar panel alarm notification system, since the comparison is made by using the average value of the comparison amount in the time width corresponding to the distance between the installation positions, the detection accuracy of the defect is improved and the reliability is improved. Can be realized.

  Moreover, in the solar panel alarm notification system of the present invention, a plurality of solar panel alarm notification systems are stored based on at least one of the solar panel installation position, rated generated power, installation azimuth angle, and elevation angle stored as installation conditions in the storage means. The power generation amount prediction means for specifying the power generation prediction amount for each of the solar panels may be further provided, and the comparison amount calculation means may calculate a ratio between the power generation amount of the solar panel and the power generation prediction amount as a comparison amount. . According to this solar panel alarm notification system, since the predicted power generation amount specified based on the installation conditions of the solar panel is used for calculating the comparison amount, the comparison amount corresponding to the installation conditions of each solar panel can be calculated. . Therefore, a pair of solar panels can be compared in consideration of installation conditions. Therefore, it is possible to improve the detection accuracy of defects and improve the reliability.

  Further, in the solar panel alarm notification system of the present invention, the comparison amount calculation means is configured to calculate at least one of the power generation amount of the solar panel and the installation azimuth and elevation angle of the solar panel stored as the installation conditions in the storage means. A ratio with the rated generated power of the solar panel corrected by use may be calculated as a comparison amount. According to this solar panel alarm notification system, the rated generated power of the solar panel corrected using at least one of the installation azimuth angle and elevation angle of the solar panel is used for calculating the comparison amount. The amount of comparison corresponding to the panel installation conditions can be calculated. Therefore, a pair of solar panels can be compared in consideration of installation conditions. Therefore, it is possible to improve the detection accuracy of defects and improve the reliability.

  ADVANTAGE OF THE INVENTION According to this invention, the solar panel alarm alerting | reporting system which can implement | achieve improvement of the detection accuracy of a malfunction and improvement of reliability can be provided, aiming at cost reduction.

It is a block diagram which shows the structure of a solar panel warning alerting | reporting system. It is a block diagram which shows the structure of a location. It is a block diagram which shows the function structure of a server. It is a block diagram which shows the hardware constitutions of a server. It is a flowchart which shows the example of the processing content of a server. It is a flowchart which shows the example of the processing content of a server. It is a flowchart which shows the example of the processing content of a server, and is a subsequent figure of FIG. It is a flowchart which shows the example of the processing content of a server, and is a subsequent figure of FIG.

  Hereinafter, embodiments according to the present invention will be described in detail with reference to the drawings. In the following description, the same reference numerals are used for the same or corresponding elements, and duplicate descriptions are omitted.

  FIG. 1 is a block diagram showing a configuration of the solar panel alarm notification system 1, and FIG. 2 is a block diagram showing a configuration of the location 20. The solar panel alarm notification system 1 is a system that, in general, detects a failure such as a failure or deterioration in the solar panel 22 by the server 30 and notifies a user terminal 50 of a predetermined alarm based on the detection result. It is. In FIGS. 1 and 2, the flow of electricity is indicated by a thick line, and the flow of signals is indicated by a thin line.

  As shown in FIG. 1, the solar panel alarm notification system 1 includes a plurality of locations 20 and a server 30. As shown in FIG. 2, each location 20 includes a plurality of solar panels 22, a plurality of power conditioners (hereinafter referred to as power conditioners) 24, and a measuring device 26.

  The solar panel 22 is a power generation panel that converts solar energy into electrical energy. The solar panel 22 is installed in a sunny place such as a roof of a house. Each solar panel 22 is installed on the roof of a different house, for example. However, two or more solar panels 22 may be installed on the roof of one house. The plurality of solar panels 22 may have different areas, shapes, number of sheets, and the like. The solar panel 22 may be, for example, a solar cell module in which a plurality of solar cells are connected, or may be a solar cell array in which a plurality of solar cell modules are connected. The solar panel 22 is owned by a user who is a user of the solar panel alarm notification system 1. Here, the solar panel 22 may be owned by one user or may be jointly owned by a plurality of users. The solar panel alarm notification system 1 includes, for example, about tens to hundreds of solar panels 22.

  The power conditioner 24 is a device that converts electric power generated by the solar panel 22 from direct current to alternating current. The power conditioner 24 is installed in the vicinity of the solar panel 22, for example. The power conditioner 24 is electrically connected to each of the solar panel 22 and the measuring device 26, and when receiving the power generated by the solar panel 22, it converts the direct current into alternating current and outputs it to the measuring device 26. . The power conditioner 24 is provided according to the amount of power generated by the solar panel 22 and is electrically connected to at least one solar panel 22.

  The measuring device 26 is a device that measures the power generation amount of the solar panel 22. The measuring device 26 has a plurality of input channels 27 to which the power conditioner 24 is electrically connected, and is electrically connected to the solar panel 22 via the power conditioner 24. The measuring device 26 receives an input from the power conditioner 24 and measures the power generation amount of the solar panel 22 according to the received input. As shown in FIG. 1, the measurement device 26 is configured to be communicable with the server 30, and transmits the power generation amount information including the measurement result to the server 30. As shown in FIG. 2, in this example, the measuring device 26 includes four input channels 27. And four power conditioners 24 are connected to the measuring device 26, and five solar panels 22 are connected via these power conditioners 24. In addition, the number and connection aspect of these solar panels 22, the power conditioner 24, and the input channel 27 can be changed suitably. For example, the number of power conditioners 24 may be increased by connecting two power conditioners 24 to one input channel 27.

  The location 20 including the plurality of solar panels 22, the plurality of power conditioners 24, and the measuring device 26 constitutes one area, for example. That is, it is assumed that the plurality of solar panels 22 included in one location 20 are installed relatively close to each other. However, the distance between the solar panels 22 included in one location 20 is not particularly limited.

  As shown in FIG. 1, the electric power generated at each location 20 is sent to the electric power company. Specifically, it is sent to the power company facility 40 owned by the power company. The power company pays the contractor an amount corresponding to the amount of power received from each location 20 (the amount of power sold). The electric power company side equipment 40 transmits the power sale amount information for the previous month to the server 30 every month, for example. The power sale amount information includes, for example, the power sale performance for the previous month at each location 20. In addition, the time interval which transmits electric power sale amount information to the server 30 can be changed suitably. 1 shows an example in which power is sold to one power company, but the power company that sells power may be different depending on the location 20.

  FIG. 3 is a block diagram illustrating a functional configuration of the server 30. As shown in FIG. 3, the server 30 functionally includes a storage unit (storage unit) 31, a power generation amount prediction unit (power generation amount prediction unit) 32, a reception unit (reception unit) 33, and a comparison amount calculation unit (comparison). It includes an amount calculation unit 34, a specific unit (specific unit) 35, a determination unit (determination unit) 36, and a notification unit (notification unit) 37. Each of these functional units may be distributed among a plurality of devices (servers) that can communicate with each other.

  FIG. 4 is a block diagram illustrating a hardware configuration of the server 30. As shown in FIG. 4, the server 30 is physically composed of a CPU 101, a main storage device 102 composed of memories such as a RAM and a ROM, an auxiliary storage device 103 composed of a hard disk, a network card, and the like. The computer system includes a communication control device 104, an input device 105 such as a keyboard and mouse as input devices, and an output device 106 such as a display.

  Each function shown in FIG. 3 is a communication control device under the control of the CPU 101 by reading predetermined computer software (alarm notification program) on the hardware such as the CPU 101 and the main storage device 102 shown in FIG. This is realized by operating the input device 104, the input device 105, and the output device 106, and reading and writing data in the main storage device 102 and the auxiliary storage device 103. Data and databases necessary for processing are stored in the main storage device 102 and the auxiliary storage device 103.

  Next, the function of the server 30 will be described. The storage unit 31 stores installation conditions for each solar panel 22. The installation conditions include at least an installation position (for example, latitude and longitude), rated generated power, installation azimuth angle, and elevation angle. The installation conditions are stored in advance in the storage unit 31 by being input by an administrator, for example. Moreover, when the solar panel 22 is newly added to the solar panel alarm notification system 1, the installation conditions for the solar panel 22 are added.

  Further, the storage unit 31 stores, for each solar panel 22, information on the predicted power generation amount (daily change) every minute in one day in an ideal state. This power generation prediction amount information is calculated by the power generation amount prediction unit 32. The power generation amount prediction unit 32 is based on at least one of the installation position, rated power generation, installation azimuth angle, and elevation angle of each solar panel 22 stored in the storage unit 31. Specify the predicted power generation amount per minute. In this example, the predicted power generation amount per minute is specified, but it may be a predetermined time interval and can be changed as appropriate.

  As a method for specifying the predicted power generation amount, for example, as a daily change pattern, a plurality of change patterns (for example, a pattern in which the amount of power generation changes in which time zone in a certain time period) of a power generation ratio with respect to the rated power generation in a day are plural. A method of correcting the rated generated power of each solar panel 22 using the diurnal change pattern is set. As a method for specifying the diurnal change pattern, for example, a diurnal change pattern is determined for each installation area divided in advance, and the correspondence between the installation area and the diurnal change pattern is stored in the storage unit 31. Conceivable. In this case, for example, the power generation amount prediction unit 32 is installed according to the installation position of the solar panel 22 from among a plurality of diurnal change patterns stored in the storage unit 31 for one solar panel 22. The daily change pattern corresponding to the region is read, and the rated generated power of the solar panel 22 is corrected by the daily change pattern.

  Alternatively, or in addition to this, the rated generated power may be corrected using at least one of the installation azimuth angle and the elevation angle. For example, as a correction coefficient, a coefficient that the power generation amount changes by how many times the installation azimuth angle and elevation angle are different is set in advance and stored in the storage unit 31, and the rated generated power is corrected using this correction coefficient. That's fine.

  The accepting unit 33 accepts the power generation amount information of the plurality of solar panels 22 from the measuring device 26. The power generation amount information includes at least an acquisition time, an ID for identifying which solar panel 22 indicates the power generation amount, and numerical data indicating the power generation amount. The reception unit 33 receives the power generation amount information at predetermined time intervals, for example, every minute. That is, the measuring device 26 transmits the power generation amount information to the server 30 every minute. In this example, the predicted power generation amount is received and transmitted every minute, but it may be a predetermined time interval and can be changed as appropriate.

  The comparison amount calculation unit 34 calculates a predetermined comparison amount for each of the plurality of solar panels 22 based on the power generation amount information. For example, each time the receiving unit 33 acquires power generation amount information, the comparison amount calculation unit 34 calculates the ratio between the acquired power generation amount and the power generation prediction amount as a feature amount. The predicted power generation amount is specified by, for example, reading the predicted power generation amount at the time when the power generation amount information is acquired with reference to the power generation prediction amount information stored in the storage unit 31.

  Note that the solar panel alarm notification system 1 may not include the power generation amount prediction unit 32. In this case, for example, the comparison amount calculation unit 34 may calculate the ratio between the acquired power generation amount and the rated generated power as the feature amount. In addition, the comparison amount calculation unit 34 may correct the rated generated power using at least one of the installation azimuth angle and the elevation angle. For example, as a correction coefficient, a coefficient that the power generation amount changes by how many times the installation azimuth angle and elevation angle are different is set in advance and stored in the storage unit 31, and the rated generated power is corrected using this correction coefficient. That's fine.

The specifying unit 35 specifies a pair of solar panels 22 to be compared from among the multiple solar panels 22 based on the installation conditions of the multiple solar panels 22 stored in the storage unit 31. For example, the specifying unit 35 uses the installation position stored as the installation condition in the storage unit 31 and specifies the pair of solar panels 22 based on the distance between the installation positions. More specifically, in this example, the specifying unit 35 sets the following three groups of solar panels 22 for each solar panel 22 based on the distance between the installation positions.
Group A: solar panels 22 connected to the same measuring device 26;
Group B: a solar panel 22 connected to another measuring device 26 and installed within a range of 100 m,
Group C: Solar panel 22 connected to another measuring device 26 and installed in a range of 100 m to 1 km.
Group A can also be regarded as a solar panel 22 installed within a range of 10 m, for example. Moreover, these numerical values can be appropriately changed according to the installation range of the solar panel 22 and the like.

  The specifying unit 35 registers ten solar panels 22 in each of the groups A to C for each solar panel 22. More specifically, the specifying unit 35 registers ten solar panels 22 from the solar panels 22 that satisfy the conditions set for each group in order of increasing distance between the installation positions. This registration information is stored in the storage unit 31, for example. When the solar panel 22 is newly added to the solar panel alarm notification system 1, the specifying unit 35 updates the registration information based on the installation position of the solar panel 22.

  Although detailed processing will be described later with reference to the flowcharts of FIGS. 6 to 8, in the present embodiment, the specifying unit 35 is a solar panel registered in the groups A to C with respect to the solar panel 22 to be inspected. One solar panel 22 selected from 22 is specified as the solar panel 22 to be compared. The specifying unit 35 may specify the solar panel 22 to be compared by another process, and for example, a group may not be set. Further, for example, considering the installation azimuth angle or elevation angle, the similarity may be calculated for each of the installation position, installation azimuth angle, and elevation angle, and the comparison target may be specified based on an index obtained by weighting and adding these. .

The determination unit 36 compares the comparison amounts of the pair of solar panels 22 specified by the specification unit 35 and determines whether or not to issue an alarm based on the comparison result. In this example, the determination unit 36 determines whether or not alarm notification is necessary based on the comparison result, and also determines which of the following three alarm levels is to be used when determining that alarm is necessary. judge.
Alarm level A: A slight decline in power generation capacity is suspected.
Warning level B: A significant decline in power generation capacity is suspected.
Alarm level C: There is a suspicion of a serious failure such as a complete shutdown of power generation.

  Although detailed processing will be described later with reference to the flowcharts of FIGS. 6 to 8, in the present embodiment, the determination unit 36 determines which of the groups A to C the solar panel 22 to be compared belongs to. Change the comparison method according to More specifically, in the case of group A, the determination unit 36 compares the comparison amount every minute (which can be regarded as an average value every minute), and in the case of group B, the comparison amount every 10 minutes. In the case of group C, the average value of comparison amounts every 30 minutes is used. As the average value, for example, a moving average can be used.

  That is, for example, in the case of groups B and C, the determination unit 36 determines that the distance between the installation positions of the pair of solar panels 22 is a predetermined value in the comparison of the comparison amounts of the pair of solar panels 22. When it is smaller than the first set value (100 m), the average value of the comparison amount in the predetermined first time width (10 minutes) is compared, and the distance between the installation positions of the pair of solar panels 22 is the first. When the set value is equal to or larger than the first set value and smaller than the second set value (1 km), the average value of the comparison amount in the second time width (30 minutes) longer than the first time width is calculated. Compare. In the case of groups A and B, it can be considered that the first set value is 10 m, the first time width is 1 minute, the second set value is 100 m, and the second time width is 10 minutes.

  The notification unit 37 instructs the user terminal 50 to notify the alarm when the determination unit 36 determines to notify the alarm. In this example, the notification unit 37 prepares an e-mail with a different text for each of the alarm levels A to C, and transmits an e-mail with a text corresponding to the determination result by the determination unit 36 to the user terminal 50. The user terminal 50 is, for example, a known PC or mobile terminal, and is a terminal that is predetermined for each user. The notification unit 37 transmits the e-mail to the user terminal 50 corresponding to the solar panel 22 to be alarmed. The user terminal 50 that receives the e-mail and is instructed to notify the alarm notifies the user of the alarm by displaying the e-mail. In addition, as a method of alerting | reporting, you may use another method, for example, you may alert | report a warning by the output of an alarm sound, etc.

  Subsequently, an example of processing contents of the server 30 will be described with reference to FIGS. FIG. 5 shows processing performed when the power generation amount information is received. In the example of this embodiment, the process shown in FIG. 5 is performed every minute.

  First, the reception part 33 receives the electric power generation amount information of each solar panel 22 included in the solar panel alarm notification system 1 from the measuring device 26 (S11). Next, the comparison amount calculation unit 34 refers to the power generation prediction amount information for each solar panel 22, and reads the power generation prediction amount at the time when the power generation amount information is acquired (S12). And the comparison amount calculation part 34 calculates the ratio of the acquired electric power generation amount and electric power generation prediction amount as a feature-value about each solar panel 22 (S13).

  Next, with reference to FIGS. 6-8, the process of the server 30 at the time of the test | inspection of the solar panel 22 is demonstrated. The flowcharts of FIGS. 6 and 7 are connected at a location indicated by a symbol B, and the flowcharts of FIGS. 7 and 8 are connected at a location indicated by a symbol C. The inspection of the solar panel 22 may be performed, for example, at a predetermined time interval (for example, once a day), or may be performed in response to an instruction from the user. In the following, the inspection procedure of one solar panel 22 will be described as an example, but actually, after the inspection of the solar panel 22 is completed, the other solar panels 22 are inspected and all the solar panels 22 are inspected. The solar panel 22 is sequentially inspected.

  First, the specifying unit 35 includes a solar panel 22 to be inspected and a solar panel 22 (i.e., a solar panel 22 to be compared) registered in i-th group A with respect to the solar panel 22 to be inspected. Are identified as a pair of solar panels 22 to be compared (S21). The initial value of the count number i is 1. Immediately after the start of processing, the first registered solar panel 22 becomes the solar panel 22 to be compared.

  Next, the determination unit 36 calculates the comparison amount per minute of the solar panel 22 to be inspected and the comparison amount per minute of the solar panel 22 to be compared for each of the latest 10 data. Compare (S22). More specifically, the determination unit 36 calculates the ratio of the comparison amount of the solar panel 22 to be inspected to the comparison amount of the solar panel 22 to be compared.

  The determination unit 36 determines whether or not the ratio of the comparison amount calculated in step S22 is 10% or less for all 10 data (condition 1, S23). As a result of the determination, when it is determined that the condition 1 is satisfied (YES in S23), it is determined that the alarm is notified at the alarm level C (S24). In this case, the notification unit 37 transmits an email with a warning level C text to the user terminal 50. Thereafter, the server 30 completes the inspection for one solar panel 22 to be inspected. This is the same in steps S26 and S28 described below except for the alarm level. On the other hand, if it is determined that the condition 1 is not satisfied (NO in S23), the process proceeds to step S25.

  In step S25, the determination unit 36 determines whether or not the ratio of the comparison amount calculated in step S22 is 50% or less for all 10 data (condition 2). As a result of the determination, if condition 2 is satisfied (YES in S25), it is determined that an alarm is to be notified at alarm level B (S26), and if it is determined that condition 2 is not satisfied (NO in S25), step S27 is performed. Proceed to processing. In step S27, the determination unit 36 determines whether or not the ratio of the comparison amount calculated in S22 is 90% or less for all 10 data (condition 3). As a result of the determination, if it is determined that the condition 3 is satisfied (YES in S27), it is determined that the alarm is notified at the alarm level A (S28), and if it is determined that the condition 3 is not satisfied (NO in S27), a step is performed. The process proceeds to S29.

  Subsequently, the determination unit 36 adds 1 to the count number i (S29), and determines whether the count number i is 10 (S30). If the count number i is not 10, the process of step S21 is executed again. If the count number i is 10, the process proceeds to step S31 shown in FIG. Thereby, the comparison with the solar panel 22 registered in the 1st to 10th in the group A is sequentially performed.

  Similarly, the steps S31 to S40 shown in FIG. 7 sequentially compare the solar panel 22 to be inspected with the first to tenth registered solar panels 22 in the group B. Here, the process for the group B is performed in step S32 in which the moving average value of the comparison amount for every 10 minutes of the solar panel 22 to be inspected and the movement of the comparison amount for every 10 minutes of the solar panel 22 to be compared. It differs from the process for group A in that the average value is compared for each of the latest five data. Further, in the steps S33, S35, and S37, the processing for the group A is also different in that these five data are used.

  Similarly, the comparison between the solar panel 22 to be inspected and the first to tenth solar panels 22 registered in the group C is sequentially performed through steps S41 to S50 illustrated in FIG. Here, the process for the group C is performed in step S42 by moving the comparison average value of the comparison amount every 30 minutes of the solar panel 22 to be inspected and the movement of the comparison amount every 30 minutes of the comparison target solar panel 22. It differs from the process for group A in that the average value is compared for each of the latest five data. Further, in the steps S43, S45, and S47, the five data are used, which is different from the process for the group A.

  The effect of the solar panel warning alert system 1 demonstrated above is demonstrated.

  According to the solar panel alarm notification system 1, the power generation amount information of the plurality of solar panels 22 can be collected and used. Specifically, the comparison amount is calculated based on the aggregated power generation amount information, and whether the alarm is notified by comparing the comparison amounts of the pair of solar panels 22 specified based on the installation conditions. Judgment. As described above, since it is determined whether or not to issue an alarm based on the collected power generation amount information, a device for determining whether or not a failure has occurred as in the prior art is provided for each solar panel 22. There is no need. For this reason, the system configuration can be simplified and the cost can be reduced.

  Moreover, it is not determined whether or not an alarm is notified based on the power generation amount information from one solar panel 22, but the alarm is performed by comparing the comparison amounts of the pair of solar panels 22 specified based on the installation conditions. Therefore, it is possible to realize improvement in defect detection accuracy and improvement in reliability. Therefore, according to the solar panel alarm notification system 1, it is possible to improve the detection accuracy of defects and improve the reliability while reducing costs.

  Moreover, according to the solar panel alarm notification system 1, since the installation position of the solar panel 22 is used and the pair of solar panels 22 to be compared is specified based on the distance between the installation positions, the installation is performed. A pair of solar panels 22 that are close in position and should have similar power generation can be compared.

  In addition, the solar panel 22 whose installation position is close tends to have a similar amount of power generation, but when the installation position is some distance away, for example, the timing at which sunlight is blocked by the clouds is different, etc. Even if it is the solar panel 22 which shows the behavior with the same amount of electric power generation if it sees in a long time width, the electric power generation amount may show a different behavior if it sees in a short time width. In such a case, if an average value of the comparison amounts in a short time width is compared, there is a possibility that an alarm is erroneously notified. In this regard, according to the solar panel alarm notification system 1, the solar panels 22 whose installation positions are separated to some extent are compared using an average value of comparison amounts over a longer time width than when the installation positions are close. Therefore, the occurrence of such erroneous notification can be suppressed. Therefore, it is possible to improve the detection accuracy of defects and improve the reliability.

  The reason why such a situation occurs will be further described. In the solar panel alarm notification system 1, as described above, when a solar panel 22 is newly added, a group based on the installation position of the solar panel 22 is added. The registration information in A to C is updated, and the identification of the pair of solar panels 22 to be compared (grouping into groups A to C) is automated. For this reason, depending on the installation position of the added solar panel 22, there may be a case where another solar panel 22 is not installed in the vicinity and it is necessary to perform a comparison with a relatively remote solar panel 22. . In such a case, if the time width of the comparison amount used for the comparison is set to a constant value, the problem of false notification as described above occurs. On the other hand, according to the solar panel alarm notification system 1, occurrence of such erroneous notification can be suppressed.

  Moreover, in the solar panel warning alert system 1, since the power generation prediction amount specified based on the installation condition of the solar panel 22 is used for calculation of the comparison amount, a comparison corresponding to the installation condition of each solar panel 22 is performed. The amount can be calculated. Accordingly, the pair of solar panels 22 can be compared in consideration of the installation conditions.

  Further, as described above, in the solar panel alarm notification system 1, the comparison amount calculation unit 34 calculates a ratio between the acquired power generation amount and the rated generated power corrected using at least one of the installation azimuth angle and the elevation angle. Alternatively, it may be calculated as a comparison amount. Also in this case, the pair of solar panels 22 can be compared in consideration of the installation conditions.

  The preferred embodiments of the present invention have been described above. However, the present invention is not limited to the above-described embodiments. The present invention can be modified without departing from the scope described in the claims or applied to other embodiments. May be.

  For example, by comparing the actual power sale amount included in the power sale amount information received from the power company facility 40 with the estimated power sale amount for the previous month of each location 20 measured by the measurement device 26, You may further provide the calibration part which performs calibration. For example, when there is a deviation between the actual power sale amount and the estimated power sale amount, the estimated power sale amount is corrected by the amount corresponding to the deviation from the next month. Thereby, measurement accuracy can be improved.

  Moreover, you may determine whether an alert | report is alert | reported based on transition of the comparison amount of the solar panel 22 itself to be examined instead of the comparison with the other solar panels 22. In this case, for example, when the measurement point of the power generation amount that is less than 50% of the power generation amount in the ideal state exceeds 70% of all the measurement points in the day, the alarm of the alarm level B is notified, and the power generation amount in the ideal state is When the measurement point of the power generation amount that is less than 10% exceeds 70% of all the measurement points in one day, an alarm of the alarm level C is notified.

DESCRIPTION OF SYMBOLS 1 ... Solar panel alarm alerting system, 20 ... Location, 22 ... Solar panel, 24 ... Power conditioner, 26 ... Measuring device, 27 ... Input channel, 30 ... Server, 31 ... Memory | storage part (memory | storage means), 32 ... Electric power generation Amount prediction unit (power generation amount prediction unit), 33 ... reception unit (reception unit), 34 ... comparison amount calculation unit (comparison amount calculation unit), 35 ... identification unit (specification unit), 36 ... determination unit (determination unit), 37 ... Notification section (notification means), 40 ... Electric power company facilities, 50 ... User terminal.

Claims (3)

Receiving means for receiving power generation amount information of a plurality of solar panels;
Comparison amount calculation means for calculating a predetermined comparison amount based on the power generation amount information for each of the plurality of solar panels;
Based on the installation conditions of the plurality of solar panels stored in the storage unit, a specifying unit that identifies a pair of solar panels to be compared from among the plurality of solar panels;
Determining means for comparing the comparison amount of the pair of solar panels and determining whether or not to issue an alarm based on the comparison result;
A notification means for instructing the user terminal to notify the alarm when the determination means determines to notify the alarm ;
The specifying means uses the installation positions of the plurality of solar panels stored in the storage means as the installation conditions, and specifies the pair of solar panels based on the distance between the installation positions. ,
In the comparison of the comparison amount of the pair of solar panels,
When the distance between the installation positions of the pair of solar panels is smaller than a predetermined first set value, the average value of the comparison amount in a predetermined first time width is compared,
When the distance between the installation positions of the pair of solar panels is not less than the first set value and smaller than the second set value that is greater than the first set value, it is longer than the first time width. A solar panel alarm notification system for comparing an average value of the comparison amounts in a second time width . Receiving means for receiving power generation amount information of a plurality of solar panels;
Comparison amount calculation means for calculating a predetermined comparison amount based on the power generation amount information for each of the plurality of solar panels;
Based on the installation conditions of the plurality of solar panels stored in the storage unit, a specifying unit that identifies a pair of solar panels to be compared from among the plurality of solar panels;
Determining means for comparing the comparison amount of the pair of solar panels and determining whether or not to issue an alarm based on the comparison result;
Informing means for instructing the user terminal to notify the alarm when the determining means determines to notify the alarm ;
Based on at least one of the installation position of the solar panel, the rated generated power, the installation azimuth angle, and the elevation angle stored as the installation condition in the storage unit, the predicted power generation amount for each of the plurality of solar panels. Power generation amount predicting means for identifying
The said comparison amount calculation means is a solar panel warning alert system which calculates the ratio of the electric power generation amount of the said solar panel, and the said electric power generation prediction amount as said comparison amount . Receiving means for receiving power generation amount information of a plurality of solar panels;
Comparison amount calculation means for calculating a predetermined comparison amount based on the power generation amount information for each of the plurality of solar panels;
Based on the installation conditions of the plurality of solar panels stored in the storage unit, a specifying unit that identifies a pair of solar panels to be compared from among the plurality of solar panels;
Determining means for comparing the comparison amount of the pair of solar panels and determining whether or not to issue an alarm based on the comparison result;
A notification means for instructing the user terminal to notify the alarm when the determination means determines to notify the alarm ;
The comparison amount calculation means corrects the solar panel corrected using at least one of the power generation amount of the solar panel and the installation azimuth angle and elevation angle of the solar panel stored as the installation condition in the storage means. A solar panel alarm notification system that calculates a ratio with the rated generated power as the comparison amount .

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