JP2017017791A - Solar power generation management device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a solar power generation management device which grasps the operating status of a plurality of unit power generation modules with high accuracy, by using the accumulated detection information about the unit power generation modules.SOLUTION: A solar power generation management device for managing a solar power generation system S includes a detector, and a computer 40 for receiving the detection information from the detector and displaying the operating status of the solar power generation system S in a display 50. The detector detects the output currents of a plurality of unit power generation modules M constituting the solar power generation system and the temperature of the installation place over time. The computer 40 stores and accumulate the detection information of the detector for each unit power generation module M. The computer 40 extracts a plurality of output current values meeting prescribed conditions, set in the items of detection information, over a predetermined detection period, from the stored and accumulated detection information, and aggregates for each unit power generation module M. The aggregation results are displayed in the display 50 for each unit power generation module M.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a solar power generation management apparatus that manages a solar power generation system using a plurality of solar panels, and relates to, for example, an apparatus suitable for so-called mega solar using a large number of solar panels.

  In recent years, in order to further reduce the environmental burden during power supply, mega solar systems that place hundreds to thousands of solar panels on a vast land have attracted attention. This mega solar is, for example, a large-scale solar power generation system with an output exceeding 1 megawatt, and is expected as a basic power source for renewable energy. Under such circumstances, operators of mega solar who want to improve the recovery efficiency of investment costs should carefully maintain the solar panels and maintain the power generation amount at a high level, even within the manufacturer's warranty. Want. However, in the conventional mega solar, it is impossible to easily determine which solar panel has an abnormality, so that the maintenance work load is enormous.

  In order to solve such a problem, the applicant of the present application has developed a photovoltaic power generation management device that facilitates maintenance of the solar panel of the photovoltaic power generation system. (For example, refer to Patent Document 1). The photovoltaic power generation management device is a photovoltaic power generation management device that manages a photovoltaic power generation system using a plurality of solar panels, and is either a single solar panel or a panel group consisting of a predetermined number of solar panels. A unit power generation module, an output detector for detecting an output current value or an output voltage value of each of the plurality of unit power generation modules, and the solar power detector connected to the output detector and receiving detection information from the output detector A calculator that displays the operating status of the photovoltaic system on a display, and the calculator includes detection information acquisition means for acquiring detection information of the output detector, and a plurality of unit power generation modules for the display. Display management means for simultaneously displaying a plurality of corresponding display frames, and the level of the detection information obtained by the detection information acquisition means Correspondingly, display color setting means for setting a color level of information to be displayed in the display frame, and operating the plurality of unit power generation modules according to the color level in the plurality of display frames of the display It was characterized by enabling visual monitoring of the situation.

  The solar power generation management device has been able to appropriately grasp the operating status of the solar panel of the solar power generation system, and has exhibited an excellent effect that maintenance can be performed systematically.

PCT / JP2014 / 080142 patent application documents

  By the way, although the said solar power generation management apparatus is useful, fundamentally, a display is monitored in real time and the operating condition of a several unit power generation module is grasped | ascertained. The applicant of the present application was aware of the problem that there may be matters that cannot be determined only by grasping the operation status of a plurality of unit power generation modules in real time.

  Therefore, in view of such circumstances, the present invention intends to provide a photovoltaic power generation management device that uses a vast amount of detection information relating to a unit power generation module that has been detected and accumulated to grasp its operation status with high accuracy. It is.

    The present invention was made to solve the above problems, the photovoltaic power generation management device of the present invention is a photovoltaic power generation management device for managing a photovoltaic power generation system using a plurality of solar panels, Either a single solar panel or a panel group consisting of a predetermined number of solar panels is used as a unit power generation module, and detection information including an output current value or an output voltage value and a detection date for each of the plurality of unit power generation modules. A detection unit that detects each of the detection units, and a computer that is connected to the detection unit and receives detection information from the detection unit and displays an operation status of the photovoltaic power generation system on a display. For each unit power generation module, a storage unit that stores and accumulates the detection information detected by the detection unit over time, and a period within which the detection information is accumulated An extraction unit that extracts a plurality of the detection information that matches a predetermined condition set for an item that can vary within one day among the items of the detection information over a period of time, and the extracted Based on a plurality of the detection information, a totaling unit that counts the output current value or output voltage value for each of the plurality of unit power generation modules, and the total corresponding to the plurality of unit power generation modules with respect to the display And a display control unit for displaying the totaled result totaled by the unit.

  Moreover, the photovoltaic power generation management apparatus of this invention WHEREIN: The item of the said detection information contains the amount of solar radiation of the said detection day, the temperature of the said detection day, or the detection time of the said detection day.

  In the photovoltaic power generation management apparatus of the present invention, the predetermined condition is a time range of detection time on the detection date.

  Moreover, the photovoltaic power generation management apparatus of this invention WHEREIN: The said predetermined condition is the solar radiation amount range of the said detection day, It is characterized by the above-mentioned.

  In the photovoltaic power generation management apparatus of the present invention, the predetermined condition is a temperature range of the air temperature on the detection date.

  Moreover, the photovoltaic power generation management apparatus of the present invention is characterized by comprising a setting unit for setting the predetermined period or the predetermined condition.

  Further, in the photovoltaic power generation management device of the present invention, a variation amount calculation unit that calculates a variation amount from a reference value of the total value for each unit power generation module based on the total value of the output current value or the output voltage value It is provided with.

  In the photovoltaic power generation management device of the present invention, the variation amount calculation unit is caused to calculate a variation amount for each of a plurality of predetermined periods under the predetermined condition, or to the variation amount calculation unit. A variation data organizing unit that calculates the amount of variation under the predetermined condition under the predetermined period, and the display control unit is calculated by the variation data organizing unit for the display. The calculated calculation results are displayed in a predetermined format.

  Further, in the photovoltaic power generation management device of the present invention, a variation degree calculation unit that calculates a variation degree of the total value among the plurality of unit power generation modules based on the total value of the output current value or the output voltage value. It is provided with.

  Further, in the photovoltaic power generation management apparatus of the present invention, the variation degree calculation unit is configured to calculate a variation degree for each of a plurality of predetermined periods under the predetermined condition, or to the variation degree calculation unit. A variation data organizing unit that calculates the degree of variation under a plurality of the predetermined conditions under the predetermined period, and the display control unit is calculated by the variation data organizing unit for the display. The calculated calculation results are displayed in a predetermined format.

  Further, the photovoltaic power generation management apparatus of the present invention is characterized by comprising an arrangement condition setting unit that sets a plurality of the predetermined periods or a plurality of the predetermined conditions.

  Further, in the photovoltaic power generation management device of the present invention, the display control unit causes the display to simultaneously display a plurality of display frames corresponding to the plurality of unit power generation modules; Display color setting means for setting a color level of information to be displayed in the display frame corresponding to the level, and a plurality of the unit power generation modules according to the color level in the plurality of display frames of the display It is characterized by being able to visually monitor the operating status of the machine.

  Further, in the photovoltaic power generation management device of the present invention, the display control unit causes the display to simultaneously display a plurality of display frames corresponding to the plurality of unit power generation modules, and the variation amount. Display color setting means for setting a color level of information to be displayed in the display frame corresponding to the level, and a plurality of the unit power generation modules according to the color level in the plurality of display frames of the display It is characterized by being able to visually monitor the operating status of the machine.

  According to the photovoltaic power generation management device of the present invention, it is possible to obtain an excellent effect that the operation status can be grasped with high accuracy by using a large amount of detection information relating to the unit power generation module detected and accumulated.

The whole structure of the photovoltaic power generation management apparatus which concerns on embodiment of this invention is shown. The structure of the junction box according to the embodiment of the present invention is shown enlarged. It is a figure which shows the structure of the computer which concerns on embodiment of this invention. It is a figure which shows the detection information table 201 of the arbitrary unit power generation modules M memorize | stored and accumulate | stored in a memory | storage part. It is a figure which shows an example of the display state of the display of a photovoltaic power generation management apparatus. It is the figure where the graph which shows the monthly change of the variation | change_quantity of a certain unit power generation module was displayed on the display. It is the figure where the graph which shows the monthly change of the dispersion | variation degree of the whole system was displayed on the display. It is the figure where the graph which shows the change for every time of the variation degree of the whole system was displayed on the display.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

  FIG. 1 shows the overall configuration of a photovoltaic power generation management device 1 according to an embodiment of the present invention. In addition, this solar power generation management device 1 manages the operation status of the solar power generation system S using a plurality of solar panels P.

  As an example, the solar power generation system S includes 1000 solar panels P. The solar panel P has a structure in which four panel groups are managed as a unit power generation module M as one set. That is, the four solar panels P are connected in series with each other and collectively output as a unit power generation module. Therefore, the photovoltaic power generation system S includes a total of 250 unit power generation modules M. In addition, although the case where the four solar panels P are modularized is illustrated here, for example, about 10 to 20 solar panels P may be used as the unit power generation module M, and one solar panel P may be used as the unit power generation module. M may also be used.

  The photovoltaic power generation management device 1 includes a connection box 10 to which the output wiring H of the unit power generation module M is connected, and a power selling side current collector to which the power selling side output wiring 12 integrated in the connection box 10 is connected. A power storage side current collection box 60 to which the power storage side output wiring 14 integrated in the connection box 10 is connected, and a battery 70 to which the output wiring 62 integrated in the power storage side current collection box is connected. The power conditioner 30 to which the output wiring 22 and the output wiring 72 of the battery 70 integrated in the power selling side current collection box 20 are connected, and the air temperature detection device 80 for detecting the air temperature at the place where the plurality of unit power generation modules M are installed. A solar radiation detection device 81 that detects the amount of solar radiation at the place where the plurality of unit power generation modules M are installed, an output detector (described later) and a switching device (described later) in the connection box 10, and an air temperature detection device 80, respectively. Yes Or comprising wireless communication line 18, 19a, and a computer 40 connected via 19B, a display 50 connected to the computer. Although not specifically shown here, the output current value to the output wiring 72 side by the battery 70 is controlled at any time by a control device (not shown). For example, the temperature detection device 80 can detect an air temperature from −20 ° C. to + 100 ° C., and the solar radiation detection device 81 can detect an amount of solar radiation in the range of 0 to 1430 wh / m 2. . As a measure of the amount of solar radiation, 0wh / m2 is night, 0-50wh / m2 is a thick cloudy sky, 50-200wh / m2 is a light cloudy sky, and 200-500wh / m2 is sunny with a cloud. , 500 to 800 wh / m2 is sunny, and 800 to 1000 wh / m2 is sunny in summer as if it is piercing the skin.

  The output wiring H of ten unit power generation modules M is connected to the connection box 10. Accordingly, 25 connection boxes 10 are prepared. The power sale side current collection box 20 is connected to the power sale side output wirings 12 of the five junction boxes 10 each. The power storage side output wiring 14 of each of the five connection boxes 10 is also connected to the power storage side current collection box 60. The battery 70 is provided so as to correspond to each of the power storage side current collection boxes 60, and the power conditioner 30 is also arranged corresponding to each of the power sale side current collection boxes 20. The computer 40 is connected to all the connection boxes 10. In this way, the output of 1000 solar panels P is aggregated into 5 systems through 250 unit power generation modules M, 25 connection boxes 10 and 5 power-collecting-side current collection boxes 20, and the power conditioner. At 30, it is converted into alternating current and supplied to the power selling terminal 99.

  In order to grasp the state of each unit power generation module M, the photovoltaic power generation management device 1 according to the embodiment of the present invention causes the detection unit as a detection unit to detect various states related to each unit power generation module M, and It is collected and stored as detection information over time. The detection information is, for example, the detection time, the temperature at the installation location of each unit power generation module M at each detection time, the temperature near the installation location, the output current value of each unit power generation module M at each detection time, or An output voltage value or the like is given as an example, but the present invention is not limited to this, and other information is also included in the present invention.

  Moreover, the detection part as a detection means is comprised by several detection means, such as the temperature detection apparatus 80, the solar radiation detection apparatus 81, and the output detector (after-mentioned) in the connection box 10. FIG. Moreover, you may enable it to also detect the detection time when the temperature detector 80 and the output detector (after-mentioned) itself in the connection box 10 each detected the temperature and the output current (output voltage) of each unit power generation module M, respectively. . The same applies to other detection units.

  FIG. 2 shows an enlarged configuration of the junction box 10 according to the embodiment of the present invention. The connection box 10 includes a housing 100, a breaker 102 installed in each output wiring H of the unit power generation module M in the housing 100, an output detector 110 arranged in the housing 100, and a power sale side output. And a switching device 120 that switches the connection destination of the output wiring H between the wiring 12 and the power storage side output wiring 14.

  The output detector 110 includes a Hall element type clamp current sensor 112 installed in each output wiring H, and an ammeter 114 that detects the current value of each output wiring H using the Hall voltage of the clamp current sensor 112. . The output detector 110 can detect each output current value of the unit power generation module M. The output current value information from the output detector 110 is transmitted to the computer 40.

  The switching device 120 is connected to the computer 40 via the communication line 18 and switches the connection destination of the output wiring H based on the instruction information from the computer 40. Specifically, it is independently selected for each unit power generation module M whether the output wiring H is connected to either the power selling side output wiring 12 or the power storage side output wiring 14. As a result, the outputs of all the unit power generation modules M connected to the junction box 10 are aggregated into either the single power sale side output wiring 12 or the single power storage side output wiring 14. The distribution ratio can be flexibly changed. Therefore, especially when an upper limit is set for the power supplied from the power sale side output wiring 12, the switching device 120 is controlled so that the upper limit is reached, and surplus power is supplied to the battery 70 side.

  Here, the case where the ammeter 114 and the switching device 120 are connected to the computer 40 by the wired communication line 18 is illustrated, but the present invention is not limited to this and can be performed by wireless communication. . For example, a wireless communication terminal is installed inside or around the connection box 10, and the ammeter 114 and the communication line of the switching device 120 are connected to the wireless communication terminal. On the other hand, a wireless communication terminal is also connected to the computer 40 side. It is preferable that the signals of the ammeter 114 and the switching device 120 and the signal of the computer 40 are exchanged wirelessly by the wireless communication terminals. When the photovoltaic power generation management device 1 is installed after the mega solar, the number of connection boxes 10 is increased and the distance of the communication wiring is enormous. If the wireless communication line is used in this way, It is possible to greatly reduce the construction burden on site. Needless to say, this wireless communication terminal may use a wireless communication line provided by a so-called mobile phone company (carrier).

  In addition, as in this embodiment, the output detector 110 is housed together in one junction box 10 so that the output current of each unit power generation module M can be detected, and the vicinity of the breaker is used. Current value measurement becomes possible, and the maintainability of the junction box 10 is dramatically improved.

  FIG. 3 is a diagram showing a configuration of the computer 40 according to the embodiment of the present invention. FIG. 3A shows the hardware configuration of the computer 40. The computer 40 includes, for example, a processing device 41, a storage device 42, and the like. The processing device 41 includes a CPU (central processing unit) 45 in which various programs are executed, a memory 46 that temporarily develops information required by the CPU 45, an information storage medium 47 in which programs and various data are stored, a LAN line, and the like Is connected to an external interface (output detector 110 or switching device 120) and an operation interface 49 that is connected to an external operation device such as a keyboard and receives an external input. . The information storage medium 47 includes a hard disk, a rewritable nonvolatile memory, a large-capacity storage medium such as DAT or DVD, and the like.

  The storage device 42 accumulates and stores data transmitted from the outside regardless of a wired line or a wireless line. The storage device 42 is an autonomous storage device having a hardware configuration such as the processing device 41 and capable of storing data transmitted from the outside directly in accordance with a predetermined program stored in the storage device 42. There may be. The storage device 42 may be, for example, a storage device that accumulates and stores data transmitted from the outside via the processing device 41.

  The computer 40 having such a configuration receives the detection information from the detection unit including the temperature detection device 80, the solar radiation detection device 81, the output detector 110, etc., and stores and accumulates the detection information variously. Tabulate under various conditions. The aggregation result is displayed on the display 50 in association with the operation status of the photovoltaic power generation system S, or the switching device 120 is controlled.

  FIG. 3B shows functional blocks realized by the CPU 40 executing a control program or the like stored in the information storage medium 47 in the computer 40. The functional block will be described below.

  The computer 40 includes a storage unit 200, an extraction unit 210, a setting unit 220, a totaling unit 230, a variation degree calculating unit 240, a totaling unit 250 by variation degree period, a display control unit 260, an abnormal condition setting unit 270, an abnormality determination unit 280, and the like. Is provided.

  The storage unit 200 stores / accumulates detection information detected by the detection unit (the temperature detection device 80, the solar radiation detection device 81, the output detector 110, etc.) continuously for each of the plurality of unit power generation modules M. is there. Specifically, in the storage unit 200, for example, detection information such as a detection date, a detection time, an air temperature at the detection time, an amount of solar radiation, and an output current value or an output voltage value for each unit power generation module M at the detection time. Stored and stored in association with the series. An example of how the detected information is stored and accumulated will be described later with reference to FIG.

  It is assumed that the storage unit 200 is carried by the storage device 42 or the information storage medium 47. When the storage device 42 as the storage unit 200 is the autonomous storage device described above, the detection information detected by the detection unit (the temperature detection device 80, the solar radiation detection device 81, the output detector 110, etc.) is directly stored. A configuration that allows transmission to the device 42 is assumed. In this case, the storage device 42 processes and stores and accumulates the transmitted detection information in association with time series. In cases other than the above, it is assumed that the detection information detected by the detection unit is transmitted to the processing device 41. In this case, the processing device 41 processes the transmitted detection information in association with time series, and stores / accumulates the processing information in the storage device 42 or the information storage medium 47.

  The extraction unit 210 includes a plurality of pieces of detection information that match a predetermined condition set for an item that can vary within one day among items of the detection information over a predetermined period within a period in which the detection information is accumulated. This is extracted from the storage unit 200. For example, a case where detection by the detection unit is performed once every three minutes from January 1, 2013 to June 30, 2015 will be described as an example. The “predetermined period within the period in which the detection information is accumulated” is a predetermined period set as a narrowing condition between January 1, 2013 and June 30, 2015 (for example, April 1, 2015 To May 31, 2015). That is, it refers to a certain period during the period detected by the detection unit.

  The “items that can vary within one day among the items of detection information” means, for example, the temperature, the amount of solar radiation, the detection time, and the output current for each unit power generation module M at the installation location of the plurality of unit power generation modules M. Any value or output voltage value can be included in the item because it can vary within a day. In addition, if there are other items that change within one day among the items of detection information, they are also included in the above.

  In addition, in the “predetermined conditions set for items that can fluctuate within one day among items of detection information”, the temperature of the installation locations of the plurality of unit power generation modules M will be described as an example of the items of detection information. In this case, the “set predetermined condition” is a temperature range of the air temperature, and for example, the air temperature is 25 ° C. to 35 ° C. The detection information item will be described by taking detection time as an example. In this case, the “set predetermined condition” is the time range of the detection time, and for example, the time is from 9:00 am to 11:00 am. In addition, as an example of the detection information, explanation will be given taking the amount of solar radiation as an example. In this case, the “set predetermined condition” is the solar radiation amount range at the detection time, and for example, “sunny with clouds (200 to 500 wh / m 2)”. The predetermined conditions listed above are examples, and the predetermined conditions in the present invention are not limited to these examples.

  Based on the above example, the operation of the extraction unit 210 will be described. According to the above example, the detection unit detects at a pace of once every 3 minutes, and the detection information from January 1, 2013 to June 30, 2015 is stored in the storage unit 200 for each unit power generation module M. -Accumulated. The “predetermined period” is from April 1, 2015 to May 31, 2015, and the “set predetermined condition” is the temperature of 25 ° C. to 35 ° C. at the place where the plurality of unit power generation modules M are installed. In the case, the extraction unit 210 includes the detection information between April 1, 2015 and May 31, 2015 when the temperature of the place where the unit power generation module M is installed is in the range of 25 ° C to 35 ° C. The output current value or the output voltage value of the unit power generation module M is searched from the storage unit 200 and extracted. This extraction may be performed for all of the plurality of unit power generation modules M, or may be performed for some specified unit power generation modules M. For example, in which unit power generation module M the above extraction is performed may be set by a setting unit 220 described below.

  The setting unit 220 sets predetermined conditions based on a predetermined period within a period in which the detection information is accumulated and items that can vary within one day among items of the detection information. For example, this setting is assumed to be performed through an input from an external operation device such as a keyboard or a voice input device, but a predetermined condition may be set in advance by a program. When the setting unit 220 sets the predetermined period based on the detection date to be between April 1, 2015 and May 31, 2015 as in the above example, for example, the start date of the period through an external operation device A mode in which the end date of the period is input and specified is assumed as an example. Similarly, when setting the temperature range and solar radiation range of the unit power generation module M installation location, the setting unit 220 similarly sets the upper and lower limits of the air temperature and the upper and lower limits of the solar radiation amount through an external operation device, for example. A mode of inputting and specifying is assumed as an example.

  The totaling unit 230 counts the output current value or the output voltage value for each of the plurality of unit power generation modules M based on the plurality of detection information extracted by the extraction unit 210. As used herein, for example, a case where an average value of the extracted output current value or output voltage value is calculated or a case where the extracted output current value or output voltage value is summed is assumed, but this is not the only case. It is not a thing and other tabulation modes may be sufficient.

  The aggregation unit 230 will be specifically described below. For example, the extraction unit 210 extracts the output current value or the output voltage value in the time period from 9:00 am to 11:00 am during the period from April 1, 2015 to April 30, 2015. . In this case, the totaling unit 230 totals all output current values or output voltage values detected during that time. Thereby, the average value of the output current value or the output voltage value of each unit power generation module M in the time zone during the period, or the total value corresponding thereto is known.

  As described above, by summing up enormous output current values or output voltage values obtained by adding limiting conditions to items that can fluctuate within one day among items of detection information within a predetermined period, It can be grasped that it could not be grasped only from the instantaneous output current value or output voltage value at the current time as in the prior art. For example, it is assumed that the output current of a unit power generation module M suddenly worsens between 10:00 am and 11:00 am on April 1, 2015, but after that, the output current becomes the same as before. . It is difficult to judge whether this unit power generation module M is out of order or whether the unit power generation module M happens to be obstructed by the obstruction when looking at the situation in real time. I don't know. However, it is assumed that the average value of the output current of the unit power generation module M is not so bad within a certain predetermined period and at 10:00 am to 11:00 am. In this case, it is reasonable to see that the unit power generation module M has not failed. As described above, when viewed in real time, it is difficult to grasp the true state of the unit power generation module M, but over a predetermined period in which a limited condition is added to items that can fluctuate within one day among the items of detection information. In some cases, the true state of the unit power generation module M may be grasped.

  Similarly, when viewed in real time, the output current of a specific unit power generation module M decreases slightly with respect to other unit power generation modules M, but only at a specific time in a day during a specific period. In some cases, the output current is greatly reduced. This leads to the discovery of failures and external factors that cannot be grasped by instantaneous data.

  In the present embodiment, the realization of the unit power generation module M that could not be grasped by the real-time monitoring or the narrowing of only the period alone by narrowing down both the period and the addition of the limiting condition to the variation items of the detection information. It is intended to grasp the state of. As described above, not only monitoring the status of the unit power generation module M in real time, but also looking at the status of the unit power generation module M over a predetermined period under the addition of a limited condition to the variation items of the detection information, The operating status of the unit power generation module M can be determined with high accuracy, and the burden on the supervisor can be reduced.

  In particular, since the output characteristics of the unit power generation module M fluctuate within a day, it is not narrowed down to items that can fluctuate within a day, such as so-called skewering search, in data for a specific period. In many cases, events to be discovered are buried.

  The variation amount calculation unit 240A calculates the variation amount from the reference value of the total value for each unit power generation module based on the total value of the output current value or the output voltage value totaled by the totalization unit 230. The variation amount represents how much the total value of the target unit power generation module M varies from the reference value. The reference value is assumed to be, for example, the average value of the total values of the plurality of unit power generation modules M or the maximum total value among the total values of the plurality of unit power generation modules M, but is not limited thereto. Accordingly, it is possible to calculate a variation amount of how much the total value of the output current value or the output voltage value aggregated by the aggregation unit 230 for each unit power generation module M varies from the reference value.

  For example, a difference X1 between the average value (or expected value) of the aggregated values of the plurality of unit power generation modules M and the aggregated value of each unit power generation module M is assumed as the variation amount. However, the present invention is not limited to this, and a value X2 obtained by squaring the difference X1 and a square root X3 of X2 are assumed as examples. However, the present invention is not limited to this, and is a value calculated by another method. May be. The variation degree calculation unit 240B calculates a variation degree of the aggregate value among the plurality of unit power generation modules M based on the aggregate value of the output current value or the output voltage value aggregated by the aggregation unit 230. This calculation is performed for a set of a plurality of unit power generation modules M. The “degree of variation” is an index representing how much the aggregate value of each unit power generation module M varies as a whole in a group of a plurality of unit power generation modules M. For example, if the aggregated values of the plurality of unit power generation modules M are similar to each other, the degree of variation of the plurality of unit power generation modules M as a whole is reduced. For example, if all the aggregated values are the same, zero is assumed. Can do. On the other hand, when the total values of the plurality of unit power generation modules M are all different and the difference between the total values is large, the degree of variation of the plurality of unit power generation modules M as a whole increases.

  As an expression of the degree of variation, for example, it is assumed that an evaluation method such as a so-called population variance, standard deviation, or the like obtained by integrating the above-described “variation amount” between a plurality of unit modules M and an arithmetic average thereof is used. However, the present invention is not limited to this, and other evaluation methods representing the degree of variation may be used.

  The amount of variation in the aggregate value among the plurality of unit power generation modules M also helps to determine the actual operation status of the unit power generation module M. For example, it is assumed that there are a large number of unit power generation modules M having a large variation amount (particularly, a larger variation than the reference value) among a plurality of unit power generation modules M installed in a specific area. In other words, it is assumed that the degree of variation is large. It can be determined that the output current obtained in the same manner in all the unit power generation modules M is not obtained from the specific unit power generation module M, that is, a loss occurs in the entire system. That is, in the case of “variation amount”, it is necessary to make an individual determination for each unit power generation module M, and it is difficult to grasp the influence on the entire system. However, in the case of “variation degree”, it occurs in the entire system. Can be indexed with a single value, so whether it is a level to take some measures in the first place (even if some failure has occurred in the unit power generation module M), or whether it is a level where the need to take measures is low There is an advantage that it can be judged instantaneously.

  When this “degree of variation” is large, it can be considered that many of the plurality of unit power generation modules M installed in the specific area at the same time have failed and have a great influence on the entire system. However, it is unlikely that many unit power generation modules M will fail at the same time. For example, a disconnection occurs on the downstream side of the connection box 10, a large sheet that has been blown over, a tree, It can be inferred that this is due to the fact that the shadow grows over a wide area due to the growth of the grass. In particular, when such an event occurs at a specific time of the day, it can be assumed that the shade has a large effect. That is, when the “degree of variation” is large, it can be seen that the events that are occurring are also large or in a wide range.

  On the other hand, if “the degree of variation” and “the amount of variation” are determined at the same time, more detailed determination may be possible. For example, when the “variation degree” is small, the “variation amount” of each unit power generation module M is intentionally checked, and it is found that the “variation amount” of several unit power generation modules M is extremely large. To do. In the case of such an event, obviously, it can be determined that a special disturbance or failure has occurred in each of the several unit power generation modules M.

  The variation data organizing unit 250 performs the following items. The calculation result by the variation data organizing unit 250 is defined as the calculated result after organizing.

(Organization pattern 1)
The variation amount calculation unit 240A calculates variation amounts for a plurality of predetermined periods under a predetermined condition, and arranges the calculation results for the predetermined periods into a predetermined format. In this case, the variation data organizing unit 250 performs the above processing for each unit power generation module. As in the case of the extraction unit 210, the predetermined condition is set for an item that can vary within one day among items of detection information. Examples of the predetermined condition include a time range of 9:00 am to 11:00 am and a temperature range of 25 ° C. to 35 ° C. as an example. As a plurality of predetermined periods, continuous data such as January 2015, February, March, and April 2015, or 2011, 2012, 2013, etc. Is mentioned.

(Organization pattern 2)
The variation degree calculation unit 240B calculates the degree of variation for each of a plurality of predetermined periods under a predetermined condition, and arranges the calculation results for the plurality of predetermined periods into a predetermined format. In this case, the variation data organizing unit 250 performs the above-described processing in a predetermined area unit constituted by a plurality of unit power generation modules, preferably the entire system. Examples of conditions are the same as those described above (Organization pattern 1).

(Organization pattern 3)
The variation amount calculation unit 240A is caused to calculate variation amounts for a plurality of predetermined conditions under a predetermined period, and the calculation results for the plurality of predetermined conditions are arranged in a predetermined format. In this case, the variation data organizing unit 250 performs the above processing for each unit power generation module. As in the case of the extraction unit 210, the plurality of predetermined conditions are set for items that can vary within one day among items of detection information. As a plurality of predetermined conditions, for example, 9 am, 10:00 am, 11:00 am, 12 am, etc. which is an hour unit, 10 ° C. to 15 ° C., 15 ° C. to 20 ° C., 20 ° C. Examples include 25 ° C, 25 ° C to 35 ° C, 35 ° C to 40 ° C, and the like. Examples of the predetermined period include January to June 2015.

(Organization pattern 4)
The variation degree calculation unit 240B calculates the degree of variation for each of a plurality of predetermined conditions under a predetermined period, and arranges the calculation results for each of the plurality of predetermined conditions into a predetermined format. In this case, the variation data organizing unit 250 performs the above-described processing in a predetermined area unit constituted by a plurality of unit power generation modules, preferably the entire system. An example of the condition is the same as the above (Organization pattern 3).

  For example, in the arrangement pattern 1, the variation of the variation amount of the unit power generation module M for each period is displayed for each unit power generation module M based on the calculation result of the variation amount calculation unit 240A. Thereby, the wrinkles and characteristics of the period variation for each unit power generation module M can be grasped.

  Specifically, it is known for each unit power generation module M which month the amount of variation is large. There are various degrees of variation throughout the year, but it is possible to easily grasp that the degree of variation increases due to factors peculiar to the period. If such a thing is also utilized, the accuracy of monitoring the operating status of the unit power generation module M will be further enhanced. In addition, the burden of monitoring the situation of the unit power generation module M is reduced.

  The plurality of periods may be set manually by the arrangement condition setting unit 251. For example, the periods may be set in advance by a program such as monthly or seasonal (spring, summer, autumn, winter). There may be. The organizing condition setting unit 251 preferably operates in conjunction with the setting unit 220. For example, the setting unit 220 sets an overall period (for example, January 1, 2014 to the end of June 2015). The organizing condition setting unit 251 may set a division period (monthly, quarterly (spring / summer / autumn / winter), weekly, daily, etc.).

  For example, in the organizing pattern 2, the daily variation of the variation amount of the unit power generation module M is displayed for each unit power generation module M based on the calculation result of the variation amount calculation unit 240A. Thereby, it is possible to grasp the habits and characteristics of changes within the day for each unit power generation module M. In this way, the change in the “variation amount” under a plurality of conditions (for example, one hour unit from 9:00 am to 5:00 pm) can be displayed over a predetermined period (for example, one year). The absolute output power fluctuation in the winter is canceled, and it becomes possible to objectively grasp the specific deviation of the output value from the power generation module M as a reference.

  Note that the plurality of predetermined conditions may be set manually by the arrangement condition setting unit 251. For example, a predetermined program such as every hour, every morning / afternoon, every temperature range, every output current range, etc. It may be the mode set in. The arrangement condition setting unit 251 preferably operates in conjunction with the setting unit 220. For example, the setting unit 220 sets an overall predetermined condition (for example, 6 am to 6 pm), and an arrangement condition setting unit In 251, it is only necessary to be able to set division conditions (every hour, every three hours).

  For example, in the organizing pattern 3, based on the calculation result of the variation degree calculation unit 240B, a change in the variation degree of the entire system for each period is displayed. Thereby, it is possible to grasp the habits and characteristics of the period variation of the entire system. And it becomes possible to quickly find a period with a large degree of variation and to take measures.

  For example, in the arrangement pattern 4, based on the calculation result of the variation degree calculation unit 240B, the intra-day change in the variation degree of the entire system is displayed. As a result, it is possible to grasp the habits and characteristics of changes within a day in the degree of variation of the entire system. In this way, changes in the “variation degree” of a plurality of conditions (for example, one hour unit from 9:00 am to 5:00 pm) can be displayed over a predetermined period (for example, one year). And absolute output power fluctuations in winter are canceled and it becomes possible to objectively grasp only the degree of variation of the entire system.

  The display control unit 260 causes the display 50 to display count results corresponding to the plurality of unit power generation modules M, variation amounts, calculation results after sorting, and the like. Further, the display control unit 260 causes the display 50 to display the degree of variation of the entire system, the calculation result after arrangement, and the like. Such a display control unit 260 includes, for example, a display management unit 261 and a display color setting unit 262.

  The display management unit 261 causes the display 50 to simultaneously display a plurality of display frames corresponding to the plurality of unit power generation modules M. The display color setting unit 262 sets the color level of information to be displayed in the display frame in accordance with the result of aggregation by the aggregation unit 230. The display color setting unit 262 sets the color level of information to be displayed in the display frame in accordance with the variation amount calculated by the variation amount calculation unit 240A. In addition, the display management unit 261 separately displays the post-ordering calculation results (the organizing pattern 1 and the organizing pattern 3) among the plurality of unit power generation modules M calculated by the variation data organizing unit 250 for the display 50. To display the transition. The display mode on the display will be described in detail separately.

  In addition, the display management unit 261 causes the display 50 to simultaneously display an entire display column relating to values of the entire system. The display color setting unit 262 sets the color level of information to be displayed in the entire display field. In addition, the display color setting unit 262 sets the color level of information to be displayed in the display column in accordance with the variation degree calculated by the variation degree calculation unit 240B. In addition, the display management unit 261 causes the display 50 to separately display the post-organization calculation results (organization pattern 2 and arrangement pattern 4) of the entire system calculated by the variation data arrangement unit 250 as a transition graph. The display mode on the display will be described in detail separately.

  The abnormal condition setting unit 270 sets an abnormal condition for detecting the abnormality for each unit power generation module M. As an abnormal condition, for example, it is assumed as an example that threshold values are set in advance for each time, every time, every air temperature, every solar radiation amount, etc., for the aggregation result in the aggregation unit 230, the variation degree in the variation degree calculation unit 240, and the like. The For example, when the total result regarding a certain unit power generation module M falls below the threshold, it is assumed that the unit power generation module M is abnormal. Further, the abnormality determination unit 280 determines whether the aggregation result in the aggregation unit 230, the variation degree in the variation degree calculation unit 240, and the like satisfy the abnormal condition, and displays abnormality information when the abnormal condition is satisfied. The abnormality information can be displayed in various ways, for example, by displaying the inside of the display frame generated by the display management unit 261 in a special color, displaying a picture with the color as it is, displaying a warning character, or blinking. A method is conceivable. An example of the display mode of the abnormality information will be described with reference to FIG.

  FIG. 4 is a diagram illustrating a detection information table 201 of an arbitrary unit power generation module M stored and accumulated in the storage unit 200. The detection information table 201 is a table in which detection information is arranged in time series. In the detection information table 201, detection date, detection time, temperature near the installation location of the unit power generation module M at the detection time, solar radiation amount, and output current of the unit power generation module M at the detection time are provided as detection information items. . In FIG. 4, the temperature near the installation location of the unit power generation module M, the amount of solar radiation, and the output current of the unit power generation module M are detected every 3 minutes every day, and these are stored in the storage unit 200 as detection information. Accumulated.

  In the storage unit 200, the detection information table 201 having such an aspect is provided for every unit power generation module M, and each detection information is stored in the same manner as described above. The detection information item in the detection information table 201 is an example, and other detection information items (for example, the output voltage of the unit power generation module M) may be included in the detection information table 201.

  FIG. 5 is a diagram illustrating an example of a display state of the display 50 of the photovoltaic power generation management device 1. The display management unit 261 in the computer 40 described above causes the display 50 to simultaneously display a plurality of display frames 212 corresponding to the plurality of unit power generation modules M, as shown in FIG. Specifically, the arrangement of the display frame 212 is displayed so as to be substantially the same as the arrangement configuration of the unit power generation modules M on site. Thereby, the relevance of the visual judgment in the display 50 and the maintenance action in the field can be imaged. Further, as shown in FIG. 5A, the display management unit 261 displays the entire display field 300 on the display 50 at the same time. Specifically, the entire display field 300 displays the degree of variation of the entire system. Thereby, since the individual determination of the unit power generation module M and the determination of the entire system can be performed simultaneously, the convenience can be further improved.

  As shown in FIG. 5A, the display color setting unit 262 in the computer 40 described above corresponds to the total value (for example, current average value; the same applies hereinafter) in the total unit 230. The color level of information displayed in the display frame 212 is set. Specifically, in the present embodiment, the entire rectangular display frame 212 is displayed so as to be colored, and at least one of the brightness, saturation, and color of the color is changed in a stepwise manner corresponding to the total value. indicate. This color stage should be able to visually recognize the increase / decrease in the aggregate value. For example, a dark color (for example, black) is displayed when the aggregate value is small, and a bright color (for example, red) is displayed when the aggregate value is large. easy. Similarly, white (achromatic color) can be changed when the total value is small, and red (chromatic color) when the total value is large. It is also possible to change the color with reference to the hue circle. Furthermore, characters (for example, current average value: 2.377 (A) and lower left 1.203 (A) are displayed in the upper left in FIG. 5A) are displayed in the display frame, and the character color is displayed. Can also be changed. Note that changing the color display range (area) stepwise is also included in the definition of the color level of the present invention.

  By doing in this way, the operating condition of all the unit power generation modules M can be individually and specifically monitored. For example, the counting unit 230 calculates the total of the output current value or the output voltage value during the time period from 9:00 am to 11:00 am during the period from April 1, 2015 to April 30, 2015 as unit power generation. This is performed for each module M, and the result is output to the display 50 shown in FIG. In FIG. 5A, for example, the display frame 212 of the unit power generation module M having a small total value is displayed in gray, and the display frame 212 of the unit power generation module M having a large total value is displayed in white. In this display, it can be seen that the total value of the unit power generation module M at the lower left of the display 50 is small. In such a case, the unit power generation module M at the lower left of the display 50 is connected to the surrounding area during the time period from 9: 00 am to 11: 00 am during the period from April 1, 2015 to April 30, 2015. It can be assumed that it is a shadow of trees and buildings. When such a fact cannot be confirmed by going to the site, various possibilities can be assumed, such as when the solar panel P itself constituting the unit power generation module M is broken, or when the wiring or connector is disconnected.

  Although not particularly illustrated here, for example, it is assumed that the solar radiation amount range is set to “light cloudy sky (50 to 200 wh / m 2)” and data for a predetermined period is extracted. Depending on the unit power generation module M, a normal power generation capability is exhibited during “clear weather”, but power generation efficiency may be degraded during “cloudy” when the amount of solar radiation decreases. Therefore, if the solar radiation amount range is narrowed down, it is possible to quickly find a unit power generation module M having such special power generation characteristics. Of course, it may be narrowed down by combining a plurality of items such as time, temperature, and amount of solar radiation.

  Further, by visually displaying in this way, the presence or absence of abnormality of the unit power generation module M can be recognized very easily. For example, when the color of the display frame 212 corresponding to one specific unit power generation module M is extremely different from the color of the adjacent surrounding display frame 212, the unit power generation module M has some electrical or mechanical trouble. The operator can guess that it has occurred. In addition, for example, when the color of a specific area (a plurality of display frames 212) composed of a plurality of adjacent unit power generation modules M is different from the color of the surrounding display frames 212, each unit power generation module M It can be determined that the sunlight irradiation environment of the entire specific area has deteriorated. For example, it can be assumed that fallen leaves and sheets are covered or a shadow of an adjacent building.

  In FIG. 5A, the variation amount calculated by the variation amount calculation unit 240A may be displayed as information to be displayed in the square display frame 212. Since the total value in the totaling unit 230 changes for each season due to the sunshine hours and the like, even in the same unit power generation module M, the color level displayed in the square display frame 212 changes for each season. come. On the other hand, the variation amount is a relative difference from the reference value and thus does not change seasonally. Therefore, if a result of the above variation amount changing for each season is obtained, it is not an influence of seasonal variation, but there is a possibility that the unit power generation module M has failed. Display is useful.

  Further, in this embodiment, the entire display field 300 in FIG. 5A is smaller than a reference value (for example, an average value or a maximum value) among all unit power generation modules as a kind of “variation degree” value. The total value (unit A) of variation amounts (unit A) of all unit power generation modules (total variation amount less than the reference value) is displayed. This total value can be considered as a total loss value from the power generation amount (reference value) that would otherwise be obtained. If this value is large, some countermeasure is required.

  Furthermore, the entire display field 300 displays the number of modules of all unit power generation modules smaller than a reference value (for example, an average value or a maximum value) among all unit power generation modules as one type of “variation degree”. When this number is large, the degree of variation is large, and some countermeasure is required.

  Further, the entire display field 300 performs “variation level display” that displays the total variation amount less than the reference value in five levels for each color as one type of the “variation degree” value. This is so that a quick visual judgment can be made.

  FIG. 5B is a diagram illustrating an example of the display mode of the abnormality information. For example, the specific unit power generation module M results in satisfying the abnormality condition, and the abnormality information of the specific display frame 212A of the display 50 corresponding thereto is displayed. The case where is displayed is shown. Thus, since the place where the abnormality has occurred is visually highlighted on the display 50, the operator can quickly notice the abnormality and can immediately maintain the local unit power generation module M. In this case, it is preferable that the background color level is visible as it is because the cause can be estimated.

  FIG. 6 is a diagram in which a graph showing a change in the amount of variation for each specific unit power generation module X in the time zone from 9:00 am to 11:00 am is displayed on the display 50. As described above, the variation data organizing unit 250 in the computer 40 has a plurality of periods in the period from January to September 2014 in the time zone from 9:00 am to 11:00 am with respect to the variation amount calculation unit 240A. It is instructed to calculate the variation amount of the unit power generation module X every month. Upon receiving the instruction, the variation amount calculation unit 240A performs the calculation. Then, the variation data organizing unit 250 organizes the calculation results for each month into a predetermined format. As the predetermined format, for example, a graph format as shown in FIG. 6 is assumed as an example, but is not limited thereto. In addition, the display 50 can display this graph about all the unit power generation modules M. If the amount of variation per month of the unit power generation module X can be visually seen as shown in FIG. 6, it is possible to grasp the status of the unit power generation module X on a monthly basis. Looking at the graph, the variation amount of the unit power generation module X is large from January to April and starts to decrease from May. As an estimation example, it can be analyzed that the position of the sun has changed in the time zone from 9:00 am to 11:00 am in early summer. In other words, there were obstacles (forests and buildings) around the unit power generation module X, and until May, the obstacles blocked the sunlight from 9:00 am to 11:00 am Since May, it seems that obstacles have not blocked the sunlight. Since the influence of shadows is completely different between morning and afternoon, such a case cannot be grasped unless it is narrowed down at a specific time.

  As described above, for example, if it is possible to see the amount of variation per month of the unit power generation module X by adding a limiting condition to items that can vary within one day among the items of detection information, the unit power generation module X It is possible to easily grasp various factors that cause a decrease in power generation. Furthermore, if the above limitation conditions are changed, and the aggregate value of the variation degree of the unit power generation module X can be seen in various periods such as hourly, weekly, bimonthly, and seasonal, the other unit power generation modules X It is possible to grasp various factors that cause a decrease in power generation.

  FIG. 7 is a diagram in which a graph showing a change in the degree of variation for each month of the entire photovoltaic power generation system S in the time zone from 9:00 am to 11:00 am is displayed on the display 50. As described above, the variation data organizing unit 250 in the computer 40 has a plurality of periods in the period from January to September 2014 in the time zone from 9:00 am to 11:00 am with respect to the variation degree calculation unit 240B. It is instructed to calculate the degree of variation of the entire photovoltaic power generation system S every month. Upon receiving the instruction, the variation degree calculation unit 240B performs the calculation. Then, the variation data organizing unit 250 organizes the calculation results for each month into a predetermined format. As the predetermined format, for example, a graph format as shown in FIG. 7 is assumed as an example, but is not limited thereto.

  If the change in the degree of variation of the entire photovoltaic power generation system S can be visually seen as shown in FIG. 7, it is possible to grasp what kind of situation the whole is on a monthly basis. Looking at the graph, the degree of variation is large from May to June. As an estimation example, it can be analyzed that the influence of shadows has increased due to the surrounding vegetation that is affected in the morning (that is, vegetation located on the east side) growing in the early summer. Since weeded in June, it has returned to its original state after July.

  FIG. 8 is a diagram in which a graph showing a change in the degree of variation for each hour of the entire photovoltaic power generation system S in one year from January to December 2014 is displayed on the display 50. The variation data organizing unit 250 in the computer 40 instructs the variation degree calculation unit 240B as described above to calculate the variation degree of the entire photovoltaic power generation system S every hour, which is a plurality of hours, in the period. . Upon receiving the instruction, the variation degree calculation unit 240B performs the calculation. Then, the variation data organizing unit 250 organizes the calculation results for each hour into a predetermined format. As the predetermined format, for example, a graph format as shown in FIG. 8 is assumed as an example, but is not limited thereto.

  If the change in the degree of variation of the entire photovoltaic power generation system S can be visually observed as shown in FIG. 8, it is possible to grasp in what time the entire system is in time units. Looking at the graph, the degree of variation is large from 9 o'clock to 10 o'clock. As an estimation example, it is possible to grasp the possibility that a building (such as a power pole, a steel tower, or an electric wire) that causes a shadow effect in the morning has been newly constructed.

  As described above, according to the photovoltaic power generation management device of the present invention, since the operation status of a plurality of unit power generation modules is quantified using a large amount of detection information relating to the accumulated unit power generation modules, instantaneous abnormalities are detected. The monitor can monitor the operating status of a plurality of unit power generation modules without being confused by an abnormal numerical value of the unit power generation module due to an accidental situation of about one day, for example. That is, according to the present invention, since the operation status of the plurality of unit power generation modules is quantified using a large amount of detection information relating to the accumulated unit power generation modules, the operation status of the plurality of highly reliable unit power generation modules is determined. It is possible to monitor a plurality of unit power generation modules without being caught only by instantaneous and short-term abnormal values. At the same time, since the operation status of the unit power generation module can be grasped with high accuracy by the photovoltaic power generation management device of the present invention, it is possible to reduce the human burden related to monitoring.

  Moreover, the solar power generation management device of the present invention is not limited to the above-described embodiment, and it is needless to say that various changes can be made without departing from the gist of the present invention.

DESCRIPTION OF SYMBOLS 1 Photovoltaic power generation management apparatus 40 Computer 41 Processing apparatus 42 Storage apparatus 50 Display 80 Temperature detection apparatus 81 Solar radiation detection apparatus 110 Output detector 200 Storage part 201 Detection information table 210 Extraction part 212 Display frame 220 Setting part 230 Aggregation part 240A Variation amount Calculation unit 240B Variation degree calculation unit 250 Variation data arrangement unit 251 Arrangement condition setting unit 260 Display control unit 261 Display management unit 262 Display color setting unit 270 Abnormal condition setting unit 280 Abnormality determination unit M Unit power generation module S Solar power generation system

Claims (13)

A solar power generation management device for managing a solar power generation system using a plurality of solar panels,
Either a single solar panel or a panel group consisting of a predetermined number of solar panels is used as a unit power generation module, and detection information including an output current value or an output voltage value and a detection date for each of the plurality of unit power generation modules. A detection unit for detecting each;
A computer connected to the detection unit, receiving detection information from the detection unit and displaying an operation status of the photovoltaic power generation system on a display;
The calculator is
For each of the plurality of unit power generation modules, a storage unit that stores and accumulates the detection information detected by the detection unit over time,
A plurality of the detection information that matches a predetermined condition set for an item that can vary within one day among the items of the detection information over a predetermined period within a period in which the detection information is accumulated. An extraction unit for extracting from,
Based on the extracted plurality of the detection information, the output current value or the output voltage value is totaled for each of the plurality of unit power generation modules, and
A solar power generation management device, comprising: a display control unit configured to display a totaling result totaled by the totaling unit corresponding to the plurality of unit power generation modules with respect to the display. The item of the detection information includes the amount of solar radiation on the detection day, the temperature of the detection day, or the detection time of the detection day.
The solar power generation management device according to claim 1. The predetermined condition is a time range of detection time of the detection date,
The photovoltaic power generation management device according to any one of claims 1 and 2. The predetermined condition is a solar radiation amount range of the detection date,
The photovoltaic power generation management device according to any one of claims 1 and 2. The predetermined condition is a temperature range of the air temperature on the detection date,
The photovoltaic power generation management device according to any one of claims 1 and 2. A setting unit for setting the predetermined period or the predetermined condition is provided.
The solar power generation management device according to any one of claims 1 to 5. A variation amount calculation unit that calculates a variation amount from a reference value of the total value for each unit power generation module based on the total value of the output current value or the output voltage value,
The photovoltaic power generation management device according to any one of claims 1 to 6. Let the variation amount calculation unit calculate a variation amount for each of a plurality of predetermined periods under the predetermined condition, or
A variation data organizing unit that causes the variation amount calculation unit to calculate variation amounts under the predetermined period and a plurality of the predetermined conditions;
The display control unit causes the display to display the calculation result after organization calculated by the variation data organizing unit in a predetermined format.
The photovoltaic power generation management device according to claim 7. A variation degree calculation unit that calculates a variation degree of the aggregate value among the plurality of unit power generation modules based on the aggregate value of the output current value or the output voltage value,
The photovoltaic power generation management device according to any one of claims 1 to 6. Let the variation degree calculation unit calculate a variation degree for each of a plurality of predetermined periods under the predetermined condition, or
A variation data organizing unit that causes the variation degree calculation unit to calculate variation degrees under a plurality of the predetermined conditions under the predetermined period,
The display control unit causes the display to display the calculation result after organization calculated by the variation data organizing unit in a predetermined format.
The photovoltaic power generation management device according to claim 9. It is characterized by comprising an arrangement condition setting unit for setting a plurality of the predetermined periods or a plurality of the predetermined conditions.
The photovoltaic power generation management device according to claim 8 or 10. The display control unit
Display management means for simultaneously displaying a plurality of display frames corresponding to the plurality of unit power generation modules on the display;
Display color setting means for setting a color level of information to be displayed in the display frame in correspondence with the level of the aggregation result;
Have
According to the color level in the plurality of display frames of the display, it is possible to visually monitor the operating status of the plurality of unit power generation modules,
The solar power generation management device according to any one of claims 1 to 11. The display control unit
Display management means for simultaneously displaying a plurality of display frames corresponding to the plurality of unit power generation modules on the display;
Display color setting means for setting a color level of information to be displayed in the display frame in accordance with the level of the variation amount;
Have
According to the color level in the plurality of display frames of the display, it is possible to visually monitor the operating status of the plurality of unit power generation modules,
The photovoltaic power generation management device according to claim 7 or 8.

Images