JP6190438B2 - Power generation data collection system and solar power generation device - Google Patents

Description

  The present invention relates to a power generation data collection system for collecting power generation data of solar power generation and a solar power generation apparatus using the power generation data collection system.

  In recent years, photovoltaic power generation devices are installed in various places by companies and individuals. A solar power generation device is a device that converts sunlight energy into electric power, and has attracted attention as a clean power generation device that does not emit carbon dioxide and the like.

  A configuration of a general solar power generation device will be described with reference to the drawings. FIG. 7 is a block diagram illustrating a configuration of a general solar power generation device. As shown in FIG. 7, a general photovoltaic power generation apparatus 1000 includes a PV (photovoltaic) array 1010, a connection box 1020, and a power conditioner 1030.

  The PV array 1010 is configured by a plurality of PV modules 1011, and the PV module 1011 is configured by a plurality of PV cells 1012. The PV cell 1012 is a photovoltaic element composed of a semiconductor such as silicon having a pn junction, for example. The PV module 1011 packages a plurality of PV cells 1012 connected in series or in parallel (for example, a plurality of PV cells 1012 aligned and arranged on a thin frame are sealed with a cover such as resin or glass). Integrated).

  A plurality of PV modules 1011 constituting the PV array 1010 are connected in series or in parallel by a connection box 1020. Further, the DC power obtained by the power generation of the plurality of PV modules 1011 electrically connected via the connection box 1020 (in other words, the DC power obtained by the entire power generation of the PV array 1010) is converted to a converter, an inverter, or the like. By the power conditioner 1030, it is converted into AC power suitable for consumption and transmission in various devices and output.

  In the case of a general photovoltaic power generation apparatus 1000 as shown in FIG. 7, the number of PV modules 1011 and the connection method are appropriately determined according to the state of the installation location such as the roof and the required power generation amount. An array 1010 is configured. For example, in a large-scale solar power generation facility (so-called mega solar) operated by a company, a plurality of PV modules 1011 are connected in series to form a PV string, and the PV strings are connected in parallel. A PV array 1010 is configured. Further, for example, in a household solar power generation apparatus used by an individual, a small-scale PV array 1010 is configured by appropriately connecting several PV modules 1011 in series or in parallel.

  In such a photovoltaic power generation apparatus 1000, in order to continuously generate power stably, it is important to periodically check for an abnormality in the PV array 1010. And when abnormality is discovered in the PV array 1010 by this test | inspection, the location where the said abnormality has arisen is specified, and the electric power generation performance of the solar power generation device 1000 is performed by performing repair and replacement | exchange as needed. Can be recovered.

  In the inspection of the PV array 1010 as described above, it is preferable that a location where an abnormality has occurred in the PV array can be specifically identified because repair and replacement can be performed quickly. Therefore, for example, in Patent Document 1, an impedance adjustment circuit for changing the impedance is provided for each PV string constituting the PV array, and the entire voltage value of the PV string is changed while changing the impedance of the PV string. And the diagnostic apparatus which enabled determination of the presence or absence of abnormality in the said PV strings by measuring current value is proposed.

JP 2013-156865 A

  However, since the diagnostic apparatus proposed in Patent Document 1 measures the entire voltage value and current value of the PV string, even if the voltage value and current value are referred to, the PV string is configured. It is difficult to grasp the power generation state of the PV module. Therefore, in this diagnostic apparatus, when the PV strings are composed of a large number of PV modules, it is difficult to identify a deteriorated PV module in the PV strings.

  In addition, in order to continuously and stably generate power in a solar power generation apparatus, it is important to detect anomalies using a diagnostic apparatus as proposed in Patent Document 1, but a PV array or a PV string is configured. It is also important to suppress the occurrence of abnormality in each individual PV module and to predict the occurrence of abnormality. And in order to implement | achieve these objectives, the basic research of PV module is required, and especially the operation test of PV module is required.

  The operation test of the PV module is performed, for example, by installing a large number of PV modules in an outdoor experiment site and measuring DC power generated by the PV modules. However, the PV module is assumed to be used for a long period of time (for example, more than ten years), and changes in the power generation state due to abnormalities such as aging and corrosion occur gradually. For this reason, it is necessary to perform an operation test of the PV module over a long period of time, but it is not easy to maintain an experimental site where a large number of PV modules are installed over a long period of time.

  On the other hand, as an operation test of the PV module, there is an operation test in which the PV module is installed in a laboratory that has artificially created a harsher environment than the actual environment, thereby accelerating the deterioration of the PV module and obtaining an experimental result in a short period of time. Widely done. However, since such an operation test is only a simulation, a result deviating from the truth may be derived.

  Therefore, it is easy and continuous to collect power generation data that can grasp changes in the power generation state of PV modules installed in a realistic usage environment without the difficulty of maintaining the experimental site for a long period of time. There is a need for a device capable of this. Further, if such a device can be used to continuously collect power generation data capable of grasping a change in the power generation state of the PV module, the diagnostic device proposed in Patent Document 1 is difficult to deteriorate. Identification of the PV module is also facilitated.

  Furthermore, the power generation data collected using such a device is not limited to the basic research of PV modules and the identification of deteriorated PV modules, but can be used for various purposes. It can be said that it is data.

  Therefore, the present invention provides a power generation data collection system that makes it possible to easily and continuously collect power generation data capable of grasping changes in the power generation state of a PV module installed in a realistic use environment. The purpose is to do.

  In order to achieve the above object, the present invention is provided in association with a micro inverter that converts DC power generated by a PV module configured by packaging at least one photovoltaic element into AC power. A data collection unit that generates and transmits power generation data including power generation information obtained by measurement, a data reception unit that receives the power generation data transmitted by the data collection unit, and the power generation received by the data reception unit A database for recording data, and the micro-inverter and the data collection unit associated therewith correspond one-to-one to a plurality of power conversion units composed of one or a plurality of the PV modules. In addition to the power generation information, the data collection unit includes the PV module that measures the DC power. Providing power data acquisition system, characterized by generating and transmitting the power data including identification information for identifying the.

  According to this power generation data collection system, the power generation data including the power generation information of the PV module can be recorded in the database only by applying the micro inverter associated with the data collection unit to the PV module actually used. . Since the power generation data recorded in the database includes identification information for identifying the PV module whose DC power is measured by the data collection unit, the power generation state of the PV module can be changed by referring to the power generation data. It becomes possible to grasp.

  In particular, in the power generation data collection system described above, it is preferable that a plurality of sets of the micro inverter and the data collection unit associated therewith are provided so as to correspond to the PV module on a one-to-one basis.

  According to this power generation data collection system, a change in the power generation state of each PV module is provided by providing a data collection unit associated with each of the micro inverters that individually convert the DC power generated by the PV modules into AC power. It is possible to collect power generation data with particularly high utility value including power generation information that individually represents

  The power generation data collection system further includes a user-provided data generation unit that generates user-provided data for provision to a user using the power generation data recorded in the database. In order for the user-provided data generation unit to generate the user-provided data to be provided to the user, at least the power generation data obtained from the PV module operated by a third party other than the user is used. May be.

  According to this power generation data collection system, user-provided data that uses power generation data widely, including power generation data of PV modules operated by third parties other than users, is generated. Therefore, it is possible to generate user-provided data including information with little deviation and close to truth based on power generation data that has a large number of parameters and is generalized.

  In addition, the person who operates the PV module and provides the power generation data is the “power generator”, and the partner who provides the user-provided data generated by the power generation data collection system using the power generation data is the “user”. In this respect, both are distinguished. However, there may be a person who is a “power generator” and a “user”, such as a power generation company.

  Furthermore, in the power generation data collection system, the user-provided data generation unit evaluates the power generation performance of the PV module that is a specific model by using the power generation data separately for each model of the PV module. It is preferable to generate the user-provided data including the evaluation result.

  According to this power generation data collection system, the power generation performance is evaluated by distinguishing the power generation data for each model of the PV module, thereby evaluating the power generation performance for each model of the PV module that normally requires a long-term operation test. Can be performed using the PV module of the power generator.

  In the power generation data collection system, the user-provided data generation unit distinguishes between the power generation data for each model of the PV module, so that the usage state and power generation performance for each model of the PV module are determined. When a deterioration criterion representing a relationship is generated and a model and a use state of a specific second-hand PV module are specified, the second-generation PV module is compared with the second-year PV module. By verifying the usage state, the power generation performance of the used PV module may be estimated, and the user-provided data including information on the estimation result may be generated.

  According to this power generation data collection system, even if it is a used PV module for which detailed power generation data has not been recorded so far (for example, it is only known about the installation year and the total power generation amount of the PV array), the degradation criterion The power generation performance can be estimated with high accuracy by checking the usage state.

  In the power generation data collection system, the user-provided data generation unit evaluates the power generation performance for each model of the PV module by using the power generation data separately for each model of the PV module. When the installation condition is specified, one or more PV module models satisfying the installation condition are selected based on the evaluated power generation performance for each model of the PV module, and information on the selection result is included. User-provided data may be generated.

  According to this power generation data collection system, it is possible to select and propose an appropriate PV module model that satisfies the specified installation conditions, based on the power generation performance of the PV modules actually installed.

  Further, in the power generation data collection system, the data collection unit generates the power generation data including information on a model of the PV module that measures the DC power, and the user-provided data generation unit includes the power generation data. It is preferable to recognize the model of the PV module from which the power generation data is obtained based on the information on the model of the PV module included in the model.

  According to this power generation data collection system, the user-provided data generation unit can recognize the model of the PV module from which the power generation data is obtained only by referring to the power generation data.

  In the power generation data collection system, the user-provided data generation unit determines whether there is an abnormality in the PV module by comparing the power generation data of the plurality of PV modules, and information on the determination result The user-provided data including

  According to this power generation data collection system, it is possible to accurately determine an abnormality specific to a PV module, distinguishing from a power generation failure due to bad weather or a shadow, or an abnormality in a common part such as a connection box or an output control device.

  In the power generation data collection system, the user-provided data generation unit estimates the amount of solar radiation at at least one time point in the past, present, and future by comparing the power generation data of the plurality of PV modules. The user-provided data including information on the estimation result may be generated.

  According to this power generation data collection system, it is possible to accurately estimate the amount of solar radiation by using power generation data obtained from PV modules that can be regarded as an infinite number of solar meters installed in various places.

  Further, in the power generation data collection system, the database may record the power generation data including the power generation information corrected so that a difference caused by an installation environment of each PV module is suppressed. .

  According to this power generation data collection system, power generation data including power generation information that suppresses differences due to the PV module installation environment, which can be an obstacle when evaluating the power generation performance of the PV module, can be recorded in the database. .

  The power generation data collection system further includes a power generation information correction unit that corrects the power generation information included in the power generation data, wherein the data collection unit measures the DC power. Preferably, the power generation information correction unit recognizes the installation environment of the PV module from which the power generation data was obtained based on the information of the installation environment included in the power generation data. .

  According to this power generation data collection system, the power generation information correction unit that corrects the power generation information can recognize the installation environment of the PV module from which the power generation data is obtained only by referring to the power generation data.

  Further, in the power generation data collection system, when a plurality of the power generation information is considered to be approximate because they satisfy a predetermined condition, a part of the plurality of power generation data including the power generation information is the Alternatively, some of the plurality of power generation data including the power generation information may be recorded in the database in a state where a part or all of the power generation information is deleted.

  According to this power generation data collection system, the amount of power generation data recorded in the database can be reduced as much as possible.

  The power generation data collection system may further include a power generator provided data generation unit that generates power generator provided data to be provided to a power generator that operates the PV module, and the power generator provided data generation unit includes: In order to generate the power generator provided data provided to the power generator, at least the power generation data obtained from the PV module operated by the power generator may be used.

  According to this power generation data collection system, it is possible to provide useful power generator provided data to the power generator. For this reason, it is possible to expect cooperation in the generation data generation by each power generator.

  In the power generation data collection system, the data collection unit may generate the power generation data including at least one of information on a model of the PV module that measures the DC power and information on an installation environment.

  According to this power generation data collection system, information on the characteristics of PV modules that have generated power and the situation at the time of power generation is included, so that power generation data that can be easily used for various purposes is recorded in a database. Can do.

  In the power generation data collection system, the data collection unit includes a power generation data temporary recording unit that temporarily records the generated power generation data, and the data collection unit is connected to the data reception unit. When the power generation data cannot be transmitted, the generated power generation data is recorded in the power generation data temporary recording unit, and then when the power generation data can be transmitted to the data reception unit, the power generation data temporary The power generation data recorded in the recording unit may be transmitted to the data receiving unit.

  According to the power generation data collection system, the power generation data temporary recording unit is provided to record untransmitted power generation data temporarily. Power generation data can be reliably transmitted to

  The present invention also includes the power generation data collection system described above, a plurality of the PV modules, and a plurality of the micro inverters, and a plurality of types of the PV modules are installed in a site within a predetermined range. The photovoltaic power generation apparatus is provided so as to be equal to each other.

  According to this solar power generation device, the power generation data including the power generation information representing the difference in power generation performance depending on the model of the PV module is obtained by suppressing the difference caused by the installation environment at the same time as obtaining the power generated by the PV module. Can be generated. That is, it is possible to perform an operation test and a power generation performance evaluation test for each model of the PV module while generating power.

  According to the power generation data collection system having the above characteristics, it is possible to collect power generation data capable of grasping the power generation state of the PV module only by applying the micro inverter associated with the data collection unit to the PV module actually used. it can. Therefore, it is possible to easily and continuously collect power generation data that can grasp the power generation state of the PV module installed in a realistic use environment.

The block diagram shown about an example of the structure of the electric power generation data collection system which concerns on embodiment of this invention. The block diagram shown about an example of a structure of a data collection part. The circuit diagram shown about an example of a structure of a direct-current power measurement part. The conceptual diagram shown about an example of a structure of the electric power generation data which a electric power generation data generation part produces | generates. The conceptual diagram shown about the specific example of the user provision data which a data processing part produces | generates. The block diagram shown about an example of a structure of the electric power generation data collection system which concerns on another embodiment of this invention. The block diagram which shows the structure of a common solar power generation device.

<< Configuration of power generation data collection system >>
Initially, the structure of the electric power generation data collection system which concerns on embodiment of this invention is demonstrated with reference to drawings. FIG. 1 is a block diagram illustrating an example of a configuration of a power generation data collection system according to an embodiment of the present invention.

  Before describing the power generation data collection system according to the embodiment of the present invention, a solar power generation apparatus to which the power generation data collection system according to the embodiment of the present invention is applied will be described. As shown in FIG. 1, the photovoltaic power generation apparatus to which the power generation data collection system 1 according to the embodiment of the present invention is applied includes at least one PV module M and a micro provided one-on-one with respect to the PV module. And an inverter A.

  The PV module M is configured by packaging at least one photovoltaic element E, and has the same configuration as the PV module 1011 illustrated in FIG. The micro inverter A is a device that converts DC power obtained by power generation of the PV module M into AC power and outputs the AC power. Generally, a micro inverter is provided on a one-to-one basis with respect to a power conversion unit composed of one or a plurality of PV modules. Convert to However, FIG. 1 illustrates a case where all power conversion units are configured by one PV module M, that is, a case where the micro inverter A is provided on a one-to-one basis for each PV module M. ing. In the following, it is assumed that the power generation data collection system 1 having the configuration illustrated in FIG. 1 is described unless otherwise specified.

  One solar power generation apparatus operated by one power generator is provided with one or a plurality of PV modules M and the same number of micro inverters A as the PV modules M. In addition, when one solar power generation device is provided with the some PV module M and the micro inverter A, the output stage of the micro inverter A can be connected and put together. This is because the micro inverter A includes a control device that monitors and synchronizes the state of the AC power in the output stage. In this case, the inverter is excluded from the output control device (for example, the power conditioner 1030 illustrated in FIG. 7) in order to control the AC power output to the outside from the output stage to which the plurality of micro inverters A are connected. Apparatus) may be provided.

  Next, the configuration of the power generation data collection system 1 according to the embodiment of the present invention will be described. As shown in FIG. 1, a power generation data collection system 1 according to an embodiment of the present invention includes a data collection unit 10, a data reception unit 11, a database 12, a data processing unit 13, a data output unit 14, And a bus 15.

  The data collection unit 10 is provided in association with the micro inverter A so as to correspond to the micro inverter A on a one-to-one basis. For example, the data collection unit 10 may be configured to be housed in the housing of the micro inverter A, or may be configured to be separate from the micro inverter A. Further, a part of the data collection unit 10 may be common with a part of the micro inverter A. Since the micro inverter A is provided on a one-to-one basis for the PV module M, the data collection unit 10 is also provided on a one-to-one basis for the PV module M.

  The data collection unit 10 is a device that generates power generation data including power generation information obtained by measuring DC power generated by the PV module M, and transmits the power generation data wirelessly or by wire. The details of the data collection unit 10 will be described in <Data collection unit configuration> described later.

  The data receiving unit 11 is configured by a communication device that receives data wirelessly or by wire, for example, and receives power generation data transmitted by the data collecting unit 10. The data collection unit 10 and the data reception unit 11 may directly transmit and receive power generation data wirelessly or by wire. However, when the power generation data is transmitted and received via a network such as the Internet, the PV module M Even if the distance between the installation location (the installation location of the data collection unit 10) and the installation location of the data reception unit 11 is large, it is preferable because the generation data can be easily transmitted and received.

  When the data collection unit 10 transmits power generation data via a network, it is preferable to wirelessly connect to an access point that can be connected to the network and transmit the power generation data because the configuration of wiring and devices can be simplified. . However, since the data collection unit 10 is provided in association with the micro inverter A installed in the vicinity of the PV module M installed outdoors, the data collection unit 10 is a personal access point that is mostly installed indoors, It may be difficult to connect to a public access point installed in Therefore, for example, a personal portable terminal (for example, a smartphone) that operates the PV module M may be configured as an access point of the data collection unit 10.

  The database 12 is composed of a recording device capable of recording a large amount of data, such as a hard disk, and records the power generation data received by the data receiving unit 11. The database 12 can record the power generation data received by the data receiving unit 11 as it is, and can also record the power generation data processed by the data processing unit 13.

  The data processing unit 13 includes an arithmetic device such as a CPU (Central Processing Unit) and a storage device such as a semiconductor memory, and performs predetermined processing when the arithmetic device executes a predetermined program. Specifically, the data processing unit 13 (corresponding to the user-provided data generation unit) performs processing for generating user-provided data to be provided to the user using the power generation data read from the database 12.

  The data output unit 14 is configured by a communication device that transmits data wirelessly or by wire, for example, and transmits the user-provided data generated by the data processing unit 13 to the user. In addition, you may comprise the data output part 14 and the data receiving part 11 with a common communication apparatus. The data output unit 14 may be configured as a display device that displays user-provided data as characters or images, or may be configured as a printing device that prints user-provided data as characters or images.

  The bus 15 is a data communication path used when each of the data receiving unit 11, the database 12, the data processing unit 13, and the data output unit 14 exchanges various data.

<Configuration of data collection unit>
Next, the configuration of the data collection unit 10 described above will be described with reference to the drawings. FIG. 2 is a block diagram illustrating an example of the configuration of the data collection unit.

  As shown in FIG. 2, the data collection unit 10 includes a DC power measurement unit 101, an additional information recording unit 102, an additional information acquisition unit 103, a time measuring unit 104, a power generation data generation unit 105, and a power generation data transmission unit. 106 and a power generation data temporary recording unit 107.

  The DC power measurement unit 101 is a measuring device for measuring DC power generated by the PV module M. As this DC power measuring unit 101, it is possible to use a well-known measuring device for measuring DC power output from a PV array, PV strings, PV module, etc., and an example thereof will be described with reference to the drawings. explain. FIG. 3 is a circuit diagram illustrating an example of the configuration of the DC power measurement unit.

  As shown in FIG. 3, the DC power measuring unit 101 includes a voltmeter 101a connected in parallel to the PV module M, an ammeter 101b and a variable load 101c connected in series to the PV module M. Prepare. The variable load 101c is an element having a variable load such as a variable resistor, a variable voltage source, or a capacitor.

  In the DC power measuring unit 101 shown in FIG. 3, the IV characteristics of the PV module M are obtained by acquiring values measured by the voltmeter 101a and the ammeter 101b while changing the load size of the variable load 101c. (Current-voltage characteristics) can be measured. Information obtained by measurement by the DC power measuring unit 101 is power generation information. Note that the DC power measurement unit 101 may measure other variables in addition to (or instead of) the IV characteristics.

  The DC power measuring unit 101 measures DC power at a predetermined timing such as every few minutes, every several hours, every few days, or the like. Note that the timing at which the DC power measurement unit 101 measures DC power is controlled by the power generation data generation unit 105, for example.

  The additional information recording unit 102 is configured by a recording device capable of recording data, such as a semiconductor memory, and records information to be included in the power generation data. The information recorded by the additional information recording unit 102 is information regarding the PV module M for which the data collecting unit 10 (particularly, the DC power measuring unit 101) measures DC power. For example, identification information such as ID (Identification) of the PV module M, and information on the model of the PV module M (for example, information on various specifications such as manufacturer, model, material constituting the photovoltaic power generation element, light receiving area, price, etc.) , Information on the installation environment of the PV module M (for example, information such as an installation position represented by latitude and longitude, an installation orientation that is an orientation of the light receiving surface, an installation angle that is an angle of the light receiving surface with respect to a horizontal plane), and the like. In principle, the information does not change over time. These pieces of information are recorded in the additional information recording unit 102 when the PV module M, the micro inverter A, and the data collection unit 10 are installed, for example. Note that the identification information of the PV module M may represent not only the PV module M itself but also a solar power generation device that the PV module M configures.

  The additional information acquisition unit 103 includes a measuring device such as a temperature sensor, for example, and acquires information to be included in the power generation data. The information measured by the additional information acquisition unit 103 is information on the PV module M for which the data collection unit 10 (particularly, the DC power measurement unit 101) measures DC power. For example, information on the installation environment of the PV module M (for example, the temperature of the PV module M, specifically, for example, the temperature of the light receiving surface or the back surface of the PV module M, or the ambient temperature), and the passage of time. It is information that can be changed with this.

  The timekeeping unit 104 is constituted by a timekeeping device that measures date and time, such as a timer, and generates date and time information. This date / time information is used, for example, when the power generation data generation unit 105 controls the operation timing of the DC power measurement unit 101.

  The power generation data generation unit 105 includes, for example, an arithmetic device such as a CPU and a storage device such as a semiconductor memory, and the arithmetic device performs a predetermined process by executing a predetermined program. Specifically, the power generation data generation unit 105 generates information on the PV module recorded by the additional information recording unit 102 with respect to the power generation information obtained by measuring the DC power of the PV module M by the DC power measurement unit 101 ( For example, information such as manufacturer, model, various specifications such as light receiving area, installation position, installation angle, etc., information of the PV module acquired by the additional information acquisition unit 103 (for example, information such as temperature of the PV module M), A process of generating power generation data is performed by adding information generated by the power generation data generation unit 105 (for example, information such as the date and time when the DC power measurement of the PV module M was performed by the DC power measurement unit 101).

  Here, an example of the data configuration of the power generation data generated by the power generation data generation unit 105 will be described with reference to the drawings. FIG. 4 is a conceptual diagram showing an example of the configuration of the power generation data generated by the power generation data generation unit.

  As illustrated in FIG. 4, the power generation data includes identification information, model information, installation environment information, measurement date information, and power generation information.

  The identification information is information such as the ID of the PV module M, for example. The model information is information such as various specifications such as the manufacturer, model, and light receiving area of the PV module M, for example. If various specifications are recognizable from the model of the PV module M, the information on the various specifications may not be included in the model information. The installation environment information is information such as the installation position, installation orientation, installation angle, and PV module M temperature of the PV module M, for example. The measurement date / time information is, for example, information on the date / time when the DC power measurement unit 101 measured the DC power of the PV module M. The power generation information is, for example, the IV characteristic of the PV module M.

  The power generation data transmission unit 106 is configured by a communication device that receives data, for example, wirelessly or by wire, and transmits the power generation data generated by the power generation data generation unit 105. The power generation data temporary recording unit 107 is configured by a recording device capable of recording data, such as a semiconductor memory, for example, and the power generation data transmission unit 106 transmits power generation data that cannot be transmitted to the data reception unit 11 after that. Recording is temporarily performed until the transmission unit 106 can transmit the power generation data to the data reception unit 11. In addition, you may comprise the additional information recording part 102 and the electric power generation data temporary recording part 107 with a common recording device.

  As described above, when the data collection unit 10 and the data reception unit 11 transmit and receive power generation data via a network such as the Internet, the data collection unit 10 may communicate with an access point (including a personal portable terminal). Inability to generate power data from the data collection unit 10 to the data reception unit 11 is likely to occur. Even if a personal portable terminal is used as an access point of the data collection unit 10, the portable terminal is not always present at a position where it can communicate with the data collection unit 10. Therefore, by providing the power generation data temporary recording unit 107 so that untransmitted power generation data can be temporarily recorded, even if there are few transmission opportunities of power generation data, the data collection unit 10 to the data reception unit 11 It is possible to reliably transmit power generation data.

  The data collection unit 10 may not include one or both of the additional information recording unit 102 and the additional information acquisition unit 103. The power generation data may not include at least one of model information, installation environment information, and measurement date information. However, since it is necessary to at least identify which PV module M is the power generation data obtained by the data processing unit 13, the additional information recording unit 102 in which the data collection unit 10 records the identification information is used. In addition, it is preferable that the power generation data includes identification information.

<< Operation of power generation data collection system >>
Next, operation | movement of the electric power generation data collection system 1 which concerns on embodiment of this invention is demonstrated. In the following, a person who operates the PV module M and provides power generation data is referred to as a “power generator”, and the user-provided data generated by the power generation data collection system 1 according to the embodiment of the present invention using the power generation data. The partner who provides is called “user” to distinguish between the two. However, there may be a person who is a “power generator” and a “user”, such as a power generation company. In the following description, it is assumed that the data collection unit 10 is installed separately for each of the micro inverters A provided for the PV module M operated by a large number of power generators.

  The data collection unit 10 generates and transmits power generation data at a predetermined timing such as every few minutes, every several hours, or every several days. The data receiving unit 11 receives the power generation data transmitted from the data collecting unit 10, and the database 12 records the power generation data received by the data receiving unit 11. As a result, the power generation data is accumulated in the database 12.

  The data processing unit 13 generates user-provided data using the power generation data recorded in the database 12. At this time, the data processing unit 13 generates user-provided data using at least power generation data obtained from the PV module M operated by a third party other than the user. That is, the user-provided data generated by the data processing unit 13 is data different from data for notifying an individual power generator of the power generation status of the PV module M operated by the power generator.

  For example, the data processing unit 13 selectively extracts the power generation data recorded in the database 12 that matches the user's request, and uses the extracted power generation data as the user provided data. In addition, for example, the data processing unit 13 selectively extracts the power generation data recorded in the database 12 that matches the user's request, and further performs predetermined processing on the power generation information included in the extracted power generation data. The user-provided data is generated by performing the above processing (for example, statistical processing).

  At this time, the data processing unit 13 identifies the PV module M from which the power generation data is obtained by referring to the identification information included in the power generation data. Further, the data processing unit 13 recognizes the model of the PV module M from which the power generation data is obtained by referring to the model information included in the power generation data. Further, the data processing unit 13 recognizes the installation environment of the PV module M from which the power generation data is obtained by referring to the installation environment information included in the power generation data. Further, the data processing unit 13 recognizes the date and time when the DC power was measured in the PV module M from which the power generation data was obtained by referring to the measurement date and time information included in the power generation data.

  Here, a specific example of the user-provided data generated by the data processing unit 13 will be described with reference to the drawings. FIG. 5 is a conceptual diagram illustrating a specific example of user-provided data generated by the data processing unit.

  As shown in FIG. 5, the data processing unit 13 generates various user-provided data according to the user. For example, the data processing unit 13 provides user-provided data including information on the power generation performance of the PV module M to a user who is interested in the power generation performance of the PV module M, such as a design / construction company or a manufacturer. Is generated. Specifically, for example, the data processing unit 13 distinguishes and uses the power generation data for each model of the PV module (for example, selectively uses only the power generation data of the PV module M that is a specific model, or uses a specific model. The power generation performance of a specific PV module M is evaluated by using the power generation data of a certain PV module M and the power generation data of the PV module M, which is at least one model for comparison), and the evaluation result is included. Generate user-provided data. Thus, by evaluating the power generation performance by distinguishing the power generation data for each model of the PV module, the evaluation result of the power generation performance for each model of the PV module M, which normally requires a long-term operation test, Can be easily obtained.

  Further, for example, the data processing unit 13 generates user-provided data including information related to the device abnormality for a user who is interested in the device abnormality such as a maintenance company. Specifically, for example, the data processing unit 13 compares the power generation data of a plurality of PV modules M (for example, compares the power generation information of the power generation data of a plurality of PV modules M having the same or similar model or installation environment). Thus, the presence / absence of abnormality of the PV module M is determined, and user-provided data including information of the determination result is generated. In this way, when comparing the power generation data of a plurality of PV modules M, it is possible to distinguish between power generation failures due to bad weather and shadows, and abnormalities in common parts such as connection boxes and output control devices, and accurately identify abnormalities unique to PV modules M. Can be determined.

  Further, for example, the data processing unit 13 generates user-provided data including information related to the marketing of the PV module M for a user who is interested in the marketing of the PV module M such as a sales / sales company. Specifically, for example, the data processing unit 13 obtains the power generation results of the PV modules M for each region and the past sales results of the PV modules M obtained from the power generation results (for example, the power generation start time is regarded as the sales time). User-provided data including information such as sales results) is generated.

  In addition, for example, the data processing unit 13 includes information on a PV module M installation method suitable for a specific installation condition for a user who is interested in the PV module M installation method such as a sales / sales company. Generate user-provided data. Specifically, for example, the data processing unit 13 is considering the introduction of a photovoltaic power generation apparatus (installation of the PV module M) specified by the input of a sales / sales company or an operator of the power generation data collection system 1. The installation conditions (for example, installation area, required power generation amount, solar radiation amount, budget, etc.) of the PV module M are recognized. Further, the data processing unit 13 evaluates the power generation performance for each model of the PV module M by using the power generation data for each model of the PV module M. Then, the data processing unit 13 determines the model of one or a plurality of PV modules satisfying the specified installation condition (particularly, the PV required to satisfy the installation condition) based on the power generation performance of the PV module M for each evaluated model. Module type and number of modules) are selected, and user-provided data including the selection result is generated. Thereby, after considering the power generation performance of the PV module M that is actually installed, it is possible to select and propose an appropriate model of the PV module that satisfies the specified installation conditions.

  In addition, for example, the data processing unit 13 provides a user including information on the power generation performance of a specific used PV module to a user who is interested in the remaining power generation performance of the used PV module such as a reuse company. Generate data. Specifically, for example, the data processing unit 13 uses the power generation data separately for each model of the PV module M, thereby generating a deterioration determination standard that represents the relationship between the use state and the power generation performance for each model of the PV module M. . For example, the deterioration criterion is a statistical process of power generation data for each model of the PV module M, and estimates the relationship between the usage state such as the installation years and total power generation and the power generation performance that deteriorates over time. Expressed using values and error ranges. Further, the data processing unit 13 recognizes the model and usage state of a specific used PV module specified by the input of the reuse company or the operator of the power generation data collection system 1. And the data processing part 13 estimates the power generation performance of the said used PV module by collating the use condition of the said used PV module with respect to the deterioration criteria of the same model as the used PV module, User-provided data including the estimation result is generated. As a result, even in the case of used PV modules for which detailed power generation data has not been recorded so far (for example, only the number of years of installation or the total power generation amount of the PV array is known), the usage status should be checked against the criteria. Thus, the power generation performance can be estimated with high accuracy. In addition, although the use condition of the whole used PV array can be understood, when the individual use condition of a plurality of PV modules constituting the PV array is not known, the use condition of the PV modules constituting the PV array is equal. Assuming that, the individual use state of the PV module may be obtained. For example, if the total power generation amount of the PV array is known but the individual total power generation amount of the plurality of PV modules constituting the PV array is not known, the total power generation amount of the PV array is divided by the number of PV modules. What is necessary is just to obtain | require the total electric power generation of each PV module. Further, the deterioration criterion is also valuable as an evaluation result of the power generation performance of the PV module M that is a specific model. For this reason, the data processing unit 13 may generate user-provided data including the deterioration criterion (see the description of the user-provided data that is generated for the above-described design / construction company or manufacturer). ).

  In addition, for example, the data processing unit 13 is used for a user who is interested in the amount of solar radiation such as a new power company (a company that supplies power based on a power transaction in a power retail market) or a weather forecasting company. Then, user-provided data including information on the amount of solar radiation estimated based on the power generation data is generated. Specifically, for example, the data processing unit 13 compares a plurality of PV module M power generation data (for example, compares power generation information of power generation data of a plurality of PV modules M whose installation positions are close and whose measurement dates are the same or similar) By doing so, the amount of solar radiation at at least one time point in the past, present and future (for example, the near future in which fluctuations in the amount of solar radiation due to cloud movement can be estimated) is estimated.

  Since the PV module M can be regarded as an infinite number of pyranometers installed in various places, the amount of solar radiation can be accurately estimated by using the power generation data obtained from these. However, when there is power generation data in which the power generation amount is locally small or large among the plurality of power generation data obtained from the plurality of PV modules M whose installation positions are close, such power generation data is stored in the PV module. It is thought that it is influenced by abnormalities such as M and the data collection unit 10 and shadows and dust covering the light receiving surface of the PV module M. Therefore, it is preferable not to use such power generation data when estimating the amount of solar radiation.

  For example, usually, when a single power generator installs a plurality of PV modules M, a plurality of PV modules are installed in a similar installation environment in a predetermined site that is narrow enough to be regarded as the same spot as compared to a range where the weather fluctuates. Module M will be installed. Therefore, taking advantage of the fact that the PV module M is installed in such a situation, the power generation amount of the plurality of PV modules M installed in the same site has a predetermined number of higher power generations and a predetermined lower power generation amount. It may be possible to exclude power generation data included in the number (or only the upper predetermined number or only the lower predetermined number), average the power generation amount, or both. And by performing such a process in the data processing unit 13, it becomes possible to estimate the amount of solar radiation more accurately. Such power generation data exclusion and averaging processes are not limited to estimating the amount of solar radiation, but for other purposes, such as when evaluating the power generation performance of a PV module M that is a specific model. It is also possible to do this.

  As described above, the power generation data collection system 1 according to the embodiment of the present invention simply generates the power generation of the PV module M by applying the micro inverter A accompanied by the data collection unit 10 to the PV module M actually used. It is possible to collect power generation data that can grasp the condition. Accordingly, it is possible to easily and continuously collect power generation data that can grasp the power generation state of the PV module M installed in a realistic use environment.

  In particular, the power generation data collection system 1 according to the embodiment of the present invention includes a data collection unit 10 associated with each of the micro inverters A that individually convert the DC power generated by the PV module M into AC power. The power generation data including the power generation information of the individual PV modules M can be collected. Therefore, it is possible to collect power generation data that can grasp the power generation state of each PV module M.

  Furthermore, in this power generation data collection system 1, user-provided data that widely uses power generation data including power generation data of the PV module M operated by a third party other than the user is generated. Therefore, it is possible to generate user-provided data including information with little deviation and close to truth based on power generation data that has a large number of parameters and is generalized.

  Note that the data processing unit 13 (corresponding to a power generator-provided data generation unit) may generate not only user-provided data for providing to the user but also power-gener provided data for providing to the power generator. . For example, since the power generator is considered to be interested in the PV module M operated by the power generator, the data processing unit 13 uses at least the power generation data obtained from the PV module M operated by the power generator. Generate offer data. Specifically, for example, the data processing unit 13 may generate power generator-provided data including information on the power generation performance of the PV module M operated by the power generator and the determination result of the presence or absence of abnormality of the PV module M. Further, the generator-provided data is also provided to the generator via the data output unit 14 in the same manner as the user-provided data.

  In this way, by providing useful power generator-provided data to power generators, each power generator cooperates in providing power generation data (particularly, permission to install the data collection unit 10 and integration with the data collection unit 10). It is possible to anticipate the installation permission of the micro inverter A.

<< Deformation, etc. >>
[1] Although FIG. 1 illustrates the case where all power conversion units are configured by one PV module M, at least one power conversion unit may be configured by a plurality of PV modules. The configuration of the power generation data collection system in this case will be described with reference to the drawings. FIG. 6 is a block diagram showing an example of the configuration of a power generation data collection system according to another embodiment of the present invention.

  As illustrated in FIG. 6, a power generation data collection system 1X according to another embodiment of the present invention is the same as the power generation data collection system 1 illustrated in FIG. 1, and includes data collection units 10 and 10X and a data reception unit 11. A database 12, a data processing unit 13, a data output unit 14, and a bus 15.

  However, in the power generation data collection system 1X, at least one power conversion unit is configured by a plurality of PV modules M, and one-to-one with respect to the micro inverter AX provided one-to-one with respect to the power conversion unit. A data collection unit 10X is provided so as to correspond.

  Even with such a power generation data collection system 1X, it is possible to collect power generation data capable of grasping the power generation state of the PV module M. Therefore, it is possible to easily and continuously collect power generation data that can grasp the power generation state of the PV module M installed in a realistic use environment.

  However, in this power generation data collection system 1X, when the power conversion unit is composed of a plurality of PV modules M, power generation data including power generation information obtained by adding the power generation states of the plurality of PV modules M is collected. Is done. Therefore, even if a change in the power generation state occurs in only one PV module M, the change may be relatively weakened and buried in the power generation information included in the power generation data.

  On the other hand, as in the power generation data collection system 1 illustrated in FIG. 1, the data collection unit 10 is provided for the micro inverter A provided to correspond to the PV module M on a one-to-one basis. (All power conversion units are configured by one PV module M), and power generation data with particularly high utility value including power generation information that individually represents changes in the power generation state of each PV module M. Can be collected.

  6 illustrates the case where the micro inverter AX is provided for the power conversion unit configured by the two PV modules M, the power conversion unit may be any number of PV modules M of two or more. Can be configured. In addition, FIG. 6 illustrates the case where a power conversion unit including one PV module M is included in addition to a power conversion unit including a plurality of PV modules M. May be composed of a plurality of PV modules M.

  Moreover, the micro inverters A and AX are provided with a control device for synchronization as described above, and it is assumed that a plurality of micro inverters A and AX are provided for one solar power generation device. For example, it is different from the inverter mounted on the power conditioner 1030 in FIG. Further, as the number of PV modules M constituting the power conversion unit is increased, the change in the power generation state caused by only one PV module M is more likely to be buried. Therefore, it is preferable that the PV modules M constituting each power conversion unit be a small number such as 1 to 4.

[2] The above-described power generation data collection system 1 may be implemented as a part of a solar power generation device such as a mega solar. In this case, it is preferable to install a plurality of types of PV modules M in a site within a predetermined range so that installation environments (for example, installation orientation and installation angle) are equal.

  In this solar power generation device, the power generation data including the power generation information representing the difference in the power generation performance depending on the model of the PV module M is obtained by suppressing the difference caused by the installation environment while obtaining the power generated by the PV module M. Can be generated. That is, it is possible to perform an operation test and a power generation performance evaluation test for each model of the PV module M while generating power.

[3] In the power generation data collection system 1 described above, since the power generation data is generated at predetermined timings such as every few minutes, every several hours, every few days, etc., the number becomes enormous. Therefore, it is preferable to reduce the amount of power generation data recorded by the database 12 as much as possible.

  Therefore, for example, in a plurality of power generation data with continuous measurement dates and times obtained from the same PV module M, when power generation information approximates a predetermined level or more, power generation included in a part of the plurality of power generation data A part of the information (for example, measurement points other than the main measurement points of the IV characteristic) or all of the information may be deleted, or a part of the plurality of power generation data may be deleted. This process can be performed by, for example, the data processing unit 13 or the power generation data generation unit 105 in the data collection unit 10. When deleting all of the power generation information included in the power generation data, since the remainder of the power generation data is recorded in the database 12, whether the power generation information was deleted or whether the power generation data was not recorded due to poor communication or the like Can be distinguished from each other.

  Also, for example, in a plurality of power generation data obtained from PV modules M whose installation positions are adjacent at the same measurement date and time, when the power generation information is approximated by a predetermined degree or more, the plurality of these data is similar to the above example. A part or all of the power generation information included in a part of the power generation data may be deleted, or a part of the plurality of power generation data may be deleted. This processing can be performed by, for example, the data processing unit 13.

[4] A solar radiation meter may be provided as the additional information acquisition unit 103, and the amount of solar radiation may be included in the installation environment information included in the power generation data. In this case, it is possible to determine whether the PV module M is abnormal by comparing the power generation information with the amount of solar radiation.

  However, as described above, the amount of solar radiation is estimated by comparing a plurality of power generation data (for example, comparing power generation information of a plurality of power generation data whose installation positions are close and whose measurement dates are the same or similar). Is possible. Therefore, it is possible to determine whether the PV module M is abnormal even if the additional information acquisition unit 103 is not provided with a pyranometer.

  In addition, by comparing the power generation information of a plurality of PV modules M (especially the PV modules M with the same or similar models) whose installation positions are so close that the amount of solar radiation can be regarded as the same, the amount of solar radiation can be measured. The presence or absence of abnormality of the PV module M can be determined without estimation.

[5] Although FIG. 4 illustrates the case where the power generation data includes all model information, installation environment information, and measurement date information, the power generation data may not include at least one of these pieces of information. For example, in the power generation data collection system 1, when model information, installation environment information, and measurement date / time information are unnecessary, the power generation data generation unit 105 of the data collection unit 10 generates power generation data that does not include these unnecessary information. Also good.

  Specifically, for example, when the database 12 records table data in which identification information such as the ID of the PV module M is associated with the model and installation environment of the PV module M, the data processing unit 13 is included in the power generation data. By inquiring the table data based on the identification information, the model and installation environment of the PV module M can be recognized. In this case, model information and installation environment information in the power generation data can be made unnecessary. However, in this method, the data processing unit 13 cannot recognize the temperature information of the PV module M, which is one piece of installation environment information. Therefore, when information on the temperature of the PV module M is necessary, the information needs to be included in the power generation data.

  For example, when the date and time when the DC power measuring unit 101 measures the DC power of the PV module M is determined in advance, the data processing unit 13 starts from the date and time when the power generation data is recorded in the database 12. Can estimate the date and time when the DC power of the PV module M is measured. In this case, the measurement date information in the power generation data can be made unnecessary.

[6] Since the power generation information included in the power generation data obtained from the PV module M installed in each region includes a difference due to the installation environment of the PV module M, an obstacle when evaluating the power generation performance of the PV module M Can be. Therefore, in order to remove this failure, the database 12 may record power generation data including power generation information corrected so as to suppress a difference caused by the installation environment of each PV module M.

  For example, the data processing unit 13 (corresponding to the power generation information correction unit) estimates and estimates the incident state of sunlight on the light receiving surface of the PV module M from the installation position, installation direction, installation angle, etc. of the PV module M. The power generation information is corrected assuming that the incident state of sunlight is a predetermined incident state. For example, the data processing unit 13 corrects the power generation information on the assumption that the actual temperature of the PV module M reaches a predetermined temperature.

  Note that the power generation data generation unit 105 may perform the process of correcting the power generation information described above. For example, when the power generation data generation unit 105 corrects a difference caused by the incident state of sunlight (when a difference caused by the installation position, installation orientation, installation angle, etc. of the PV module M is corrected), for each PV module M The power generation information may be corrected by a predetermined correction method (for example, multiplying by a predetermined coefficient). For example, when the power generation data generation unit 105 corrects a difference caused by the temperature of the PV module M, a correction method using the temperature of the PV module M as a variable (for example, a predetermined coefficient using the temperature of the PV module M as a variable). The power generation information may be corrected by multiplying

  INDUSTRIAL APPLICABILITY The present invention can be used for a power generation data collection system that collects power generation data of solar power generation and a solar power generation apparatus that uses the power generation data collection system.

1, 1X: Power generation data collection system 10, 10X: Data collection unit 101: DC power measurement unit 101a: Voltmeter 102b: Ammeter 103c: Variable load 102: Additional information recording unit 103: Additional information acquisition unit 104: Timing unit 105 : Power generation data generation unit 106: Power generation data transmission unit 107: Power generation data temporary recording unit 11: Data reception unit 12: Database 13: Data processing unit
(User-provided data generator, generator-provided data generator, power generation information correction unit)
14: Data output unit 15: Bus M: PV module E: Photovoltaic element A, AX: Micro inverter

Claims (16)

Power generation including power generation information obtained by measuring the DC power, provided along with a micro inverter that converts DC power generated by a PV module configured by packaging at least one photovoltaic device into AC power A data collector that generates and transmits data;
A data receiving unit for receiving the power generation data transmitted by the data collecting unit;
A database for recording the power generation data received by the data receiving unit;
A plurality of sets of the micro inverter and the data collection unit associated therewith are provided so as to correspond one-to-one to a plurality of power conversion units configured by one or a plurality of the PV modules,
The data collection unit generates and transmits the power generation data including identification information for identifying the PV module that measures the DC power in addition to the power generation information ,
When the plurality of power generation information is considered to be approximate because they satisfy a predetermined condition,
A part of the plurality of power generation data including the power generation information is not recorded in the database, or a part or all of the power generation information is deleted for a part of the plurality of power generation data including the power generation information. The power generation data collection system is recorded in the database .   The data collection unit includes an additional information recording unit for recording the identification information;
  In the additional information recording unit included in the data collection unit, information on the model of the PV module for which the data collection unit measures the DC power is recorded, and the data collection unit includes the information. The information of the model of the PV module associated with the identification information of the PV module included in the power generation data is recorded in the database. Power generation data collection system.   Power generation including power generation information obtained by measuring the DC power, provided along with a micro inverter that converts DC power generated by a PV module configured by packaging at least one photovoltaic device into AC power A data collector that generates and transmits data;
  A data receiving unit for receiving the power generation data transmitted by the data collecting unit;
  A database for recording the power generation data received by the data receiving unit;
  A plurality of sets of the micro inverter and the data collection unit associated therewith are provided so as to correspond one-to-one to a plurality of power conversion units configured by one or a plurality of the PV modules,
  The data collection unit includes an additional information recording unit that records identification information for identifying the PV module that measures the DC power, and generates the power generation data including the identification information in addition to the power generation information. Is to send,
  In the additional information recording unit included in the data collection unit, information on the model of the PV module for which the data collection unit measures the DC power is recorded, and the data collection unit includes the information. Or the database records information on the model of the PV module associated with the identification information of the PV module included in the power generation data.   In the additional information recording unit provided in the data collection unit, information on an installation environment of the PV module in which the data collection unit measures the DC power is recorded, and the data collection unit includes the information The data is generated, or the database records information on an installation environment of the PV module associated with the identification information of the PV module included in the power generation data. Or the power generation data collection system according to 3. The said micro inverter and the said data collection part accompanying it are provided with two or more sets so that it may respond | correspond one-to-one with respect to the said PV module, The any one of Claims 1-4 characterized by the above-mentioned. The power generation data collection system described. A user-provided data generation unit that generates user-provided data for providing to a user using the power generation data recorded in the database,
In order for the user-provided data generation unit to generate the user-provided data to be provided to the user, at least the power generation data obtained from the PV module operated by a third party other than the user The power generation data collection system according to claim 1 , wherein the power generation data collection system is used. The user-provided data generation unit evaluates the power generation performance of the PV module that is a specific model by using the power generation data separately for each model of the PV module, and includes the information of the evaluation result The power generation data collection system according to claim 6 , wherein the data provided by the operator is generated. The user-provided data generation unit
By using the power generation data separately for each model of the PV module, a degradation determination standard that represents the relationship between the usage state and the power generation performance is generated for each model of the PV module,
When the model and usage status of a specific used PV module are specified, the usage status of the used PV module is checked against the deterioration judgment standard of the same model as the used PV module. The power generation data collection system according to claim 6 or 7 , wherein the power generation performance of the PV module is estimated, and the user-provided data including information of the estimation result is generated. The user-provided data generation unit
By distinguishing and using the power generation data for each model of the PV module, the power generation performance is evaluated for each model of the PV module,
When specific installation conditions are specified, one or more PV module models satisfying the installation conditions are selected based on the evaluated power generation performance of each model of the PV module, and information on the selection result is included. The power generation data collection system according to any one of claims 6 to 8 , wherein the user-provided data is generated. The user-provided data generation unit compares the power generation data of a plurality of the PV modules to determine whether the PV module is abnormal, and generates the user-provided data including information on the determination result The power generation data collection system according to any one of claims 6 to 9 . The user-provided data generation unit estimates the amount of solar radiation at at least one time point in the past, present, and future by comparing the power generation data of a plurality of the PV modules, and includes information on the estimation result The power generation data collection system according to any one of claims 6 to 10 , wherein the data provided by the operator is generated. Wherein the database, claim 1-11 for differences caused by the installation environment of each of the PV module and recording the power generation data including corrected the generator information was to be inhibited The power generation data collection system according to item 1. Generation data collection system according to claim 12, characterized in that the power generation information correction unit for correcting the power information included in the power generation data, Ru further comprising. A generator-provided data generation unit for generating generator-provided data for providing to the generator operating the PV module;
The power generator provided data generation unit uses at least the power generation data obtained from the PV module operated by the power generator in order to generate the power generator provided data to be provided to the power generator. The power generation data collection system according to any one of claims 1 to 13 . The data collection unit includes a power generation data temporary recording unit that temporarily records the generated power generation data,
The data collection unit records the generated power generation data in the power generation data temporary recording unit when the power generation data cannot be transmitted to the data reception unit, and then the data reception unit The power generation data recorded in the power generation data temporary recording unit is transmitted to the data receiving unit when power generation data can be transmitted. Power generation data collection system. The power generation data collection system according to any one of claims 1 to 15,
A plurality of the PV modules;
A plurality of the micro inverters,
A plurality of types of the PV modules are installed in a site within a predetermined range so that installation environments are equal.

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