JP5258364B2

JP5258364B2 - Photovoltaic power generation system, photovoltaic module fault detection method, photovoltaic module control circuit

Info

Publication number: JP5258364B2
Application number: JP2008113983A
Authority: JP
Inventors: 史郎鈴木; 利康樋熊
Original assignee: Mitsubishi Electric Corp
Current assignee: Mitsubishi Electric Corp
Priority date: 2008-04-24
Filing date: 2008-04-24
Publication date: 2013-08-07
Anticipated expiration: 2028-04-24
Also published as: JP2009267031A

Description

本発明は、太陽光発電システム、太陽光発電システムの故障太陽電池モジュール検出方法太陽電池モジュールの制御回路に関し、特に、故障している太陽電池モジュールの検出に関する。 The present invention, photovoltaic power generation system, related to the control circuitry of the fault solar cell module detection method solar cell module for photovoltaic systems, in particular, relates to the detection of the solar cell module has failed.

太陽電池を利用した太陽光発電システムは、住宅の屋根などに太陽電池モジュールを複数配設して太陽電池アレイとし、この太陽電池アレイで発電された電力は送電ケーブル及び接続箱を介して系統連系インバータへ送電される。 In a solar power generation system using solar cells, a plurality of solar cell modules are arranged on the roof of a house to form a solar cell array, and the electric power generated by the solar cell array is connected to the grid via a transmission cable and a connection box. Power is transmitted to the system inverter.

ここで、太陽電池アレイは、複数枚の太陽電池モジュールを直列に接続してストリングとした場合には、このストリングが１以上集まって構成されている。送電ケーブルの電線は、ストリングの数に応じて存在するのが一般的であり、送電ケーブルの電線が接続箱で並列接続された後に、太陽電池アレイで発電された直流電力を交流電力に変換する系統連系インバータに入力され、一般の交流負荷に供給されたり、もしくは系統連系により電力会社へ売電される。 Here, when a plurality of solar cell modules are connected in series to form a string, the solar cell array is configured by collecting one or more strings. In general, the power transmission cable wires exist according to the number of strings, and after the power transmission cable wires are connected in parallel in the connection box, the DC power generated by the solar cell array is converted into AC power. The power is input to the grid-connected inverter and supplied to a general AC load or sold to a power company through the grid connection.

太陽光発電システムは、太陽電池モジュールを複数枚直列に接続したものをストリングとし、それぞれのストリングを並列に接続して構成しているので、公共施設や工場に設置される場合では数千枚に及ぶことがある。そのため、太陽電池モジュールが故障した際にその故障の有無は知ることができても、故障した太陽電池モジュールがどこに配置されているかを直ちに判別することはできず、故障した太陽電池モジュールを探し出すのに多大な時間と労力を費やすこととなり、正常な発電への迅速な回復ができなかった。 A solar power generation system is made by connecting multiple solar cell modules in series as a string and connecting each string in parallel.Thus, when installed in a public facility or factory, it is several thousand. There may be. Therefore, when a solar cell module fails, the presence or absence of the failure can be known, but it is not possible to immediately determine where the failed solar cell module is located. It took a lot of time and labor to recover the normal power generation.

このため、例えば「太陽光発電システムにおける太陽電池アレイと、この太陽電池アレイとは別のパイロット単位太陽電池部と、このパイロット単位太陽電池部の出力特性曲線から太陽電池アレイの出力特性曲線モデルを作成しこの出力特性曲線モデルを太陽電池アレイの出力特性曲線と比較し太陽電池アレイの異常を診断する診断部とを備えたことを特徴とする太陽電池診断システム。」が提案されている（例えば特許文献１参照）。
また、「複数の太陽電池モジュールと、これら太陽電池モジュールのうち故障している太陽電池モジュールを検出する故障検出手段とを備えた太陽光発電装置であって、前記複数の太陽電池モジュールのそれぞれに、前記故障検出手段に対して信号の送受信を行う通信手段と、太陽電池モジュールの特性及び温度を測定する測定手段と、該測定手段により得られたデータ及び太陽電池モジュールの識別子を記憶する記憶手段とを設け、前記測定手段により得られたデータ及び／または前記太陽電池モジュールの識別子を示す信号を、前記通信手段から前記故障検出手段へ送信可能としたことを特徴とする太陽光発電装置。」が提案されている（例えば特許文献２参照）。 For this reason, for example, a solar cell array in a photovoltaic power generation system, a pilot unit solar cell unit different from this solar cell array, and an output characteristic curve model of the solar cell array from the output characteristic curve of this pilot unit solar cell unit A solar cell diagnostic system comprising a diagnostic unit that creates and compares the output characteristic curve model with the output characteristic curve of the solar cell array and diagnoses an abnormality of the solar cell array has been proposed (for example, Patent Document 1).
Further, “a solar power generation apparatus including a plurality of solar cell modules and a failure detection means for detecting a malfunctioning solar cell module among these solar cell modules, and each of the plurality of solar cell modules. Communication means for transmitting / receiving signals to / from the failure detection means, measurement means for measuring characteristics and temperature of the solar cell module, and storage means for storing data obtained by the measurement means and an identifier of the solar cell module And a signal indicating the data obtained by the measurement unit and / or the identifier of the solar cell module can be transmitted from the communication unit to the failure detection unit. ” Has been proposed (see, for example, Patent Document 2).

特開平８−６４６５３号公報（特許請求の範囲、図３）JP-A-8-64653 (Claims, FIG. 3) 特開２００４−２２１４７９号公報（特許請求の範囲、図１）JP 2004-221479 A (Claims, FIG. 1)

しかしながら、上記の特許文献１の自己診断等の処理を行う場合には、太陽電池モジュール自体に高度な判断回路を設ける必要があり、構造が複雑化するといった問題点が生じる。
また、上記の特許文献２の故障診断等の処理を行う場合には、太陽電池モジュールに予め個別識別情報をもたせ、設置時に個別識別情報と実際の設置場所とを対応させるための情報を故障検出機に設定する必要があり、施工性が悪く、太陽電池モジュールを交換した場合などのメンテナンスも複雑化するといった問題点が生じる。 However, when processing such as the self-diagnosis of Patent Document 1 described above is performed, it is necessary to provide an advanced determination circuit in the solar cell module itself, which causes a problem that the structure becomes complicated.
In addition, when performing a process such as failure diagnosis of Patent Document 2 above, individual identification information is given to the solar cell module in advance, and information for associating the individual identification information with the actual installation location at the time of installation is detected as a failure. It is necessary to set the machine, the workability is poor, and there is a problem that the maintenance is complicated when the solar cell module is replaced.

本発明は、上記のような課題を解決するためになされたものであり、第１には、太陽電池アレイを構成する個々の太陽電池モジュールの状況を容易にかつ迅速に確認することが可能な優れた太陽光発電システム、及び太陽光発電システムの故障太陽電池モジュール検出方法を提供することを目的としている。第２には、前記太陽光発電システムに用いられる太陽電池モジュールの制御回路を提供することを目的としている。 The present invention has been made to solve the above-described problems. First, it is possible to easily and quickly confirm the status of individual solar cell modules constituting the solar cell array. An object of the present invention is to provide an excellent solar power generation system and a method for detecting a faulty solar cell module of the solar power generation system. Second, it is an object to provide a control circuitry of the solar cell module used for the photovoltaic power generation system.

本発明に係る太陽光発電システムは、直列に接続された複数の太陽電池モジュールと、前記直列に接続された複数の太陽電池モジュールのうち故障している太陽電池モジュールを検出する故障検出手段とを備えた太陽光発電システムにおいて、前記直列に接続された複数の太陽電池モジュールのそれぞれは、前記故障検出手段との間で信号を送受信する通信手段と、前記太陽電池モジュールの特性である当該太陽電池モジュールの電圧及び温度を所定の条件で測定する測定手段と、前記太陽電池モジュールの位置情報を内在する個別識別情報を検出する個別識別情報検出手段と、前記測定手段により得られた測定データ及び前記個別識別情報検出手段により得られた太陽電池モジュールの個別識別情報を記憶する記憶手段とを備え、前記個別識別情報検出手段により得られた個別識別情報若しくは当該情報に関連した情報、又は前記測定手段により得られた測定データ及び前記個別識別情報検出手段により得られた太陽電池モジュールの個別識別情報を前記通信手段から前記故障検出手段へ送信可能とし、前記故障検出手段は、前記太陽電池モジュールからの個別識別情報若しくは当該情報に関連する情報を受信すると、受信した情報に基づいて個別識別情報に対応した太陽電池モジュールの位置情報を求めて記憶し、前記太陽電池モジュールからの測定データ及び個別識別情報を受信すると、当該測定データ及び個別識別情報と、予め記憶されている個別識別情報に対応した太陽電池モジュールの位置情報とに基づいて故障している太陽電池モジュールをその設置場所を含めて検出し、前記個別識別情報検出手段は、前記測定手段により測定された電圧値に基づき、前記複数の太陽電池モジュールの共通の電位に対する各前記太陽電池モジュールの出力端の電圧値を前記複数の太陽電池モジュールのそれぞれの個別識別情報と認識し、前記記憶手段に記憶するものである。なお、本発明の太陽電池モジュールの位置情報を内在する個別識別情報とは、その個別識別情報に基づいて太陽電池モジュールの位置情報を一義的に導き出せる情報を言う（詳細は後述の実施の形態を参照）。 A photovoltaic power generation system according to the present invention includes a plurality of solar cell modules connected in series, and a failure detection means for detecting a failed solar cell module among the plurality of solar cell modules connected in series. In the solar power generation system provided, each of the plurality of solar cell modules connected in series includes a communication unit that transmits and receives signals to and from the failure detection unit, and the solar cell that is a characteristic of the solar cell module Measuring means for measuring the voltage and temperature of the module under predetermined conditions, individual identification information detecting means for detecting individual identification information including the positional information of the solar cell module, measurement data obtained by the measuring means, and the Storage means for storing individual identification information of the solar cell module obtained by the individual identification information detection means, and the individual The individual identification information obtained by another information detection means or the information related to the information, or the measurement data obtained by the measurement means and the individual identification information of the solar cell module obtained by the individual identification information detection means are communicated. The failure detection means receives the individual identification information from the solar cell module or information related to the information, and receives the solar corresponding to the individual identification information based on the received information. When the position information of the battery module is obtained and stored, and the measurement data and the individual identification information from the solar cell module are received, the solar cell module corresponding to the measurement data and the individual identification information and the individual identification information stored in advance The faulty solar cell module including its installation location is detected based on the location information of And, wherein the individual identification information detecting means, based on the voltage value measured by the measuring means, said plurality of common each said solar cell output voltage value of the plurality of solar cells of the module with respect to the potential of the solar cell module The module is recognized as individual identification information of each module and stored in the storage means. In addition, the individual identification information including the position information of the solar cell module of the present invention refers to information that can uniquely derive the position information of the solar cell module based on the individual identification information (details will be described in the embodiments described later). reference).

本発明によれば、個別識別情報検出手段が太陽電池モジュールの位置情報を内在する個別識別情報を検出し、故障検出手段が、太陽電池モジュールから個別識別情報（位置情報を内在）若しくは当該情報に関連する情報を受信すると、受信した情報に基づいて個別識別情報に対応した太陽電池モジュールの位置情報を求めて記憶し、太陽電池モジュールからの測定データ及び個別識別情報を受信すると、当該測定データ及び個別識別情報と、予め記憶されている個別識別情報に対応した太陽電池モジュールの位置情報とに基づいて故障している太陽電池モジュールをその設置場所を含めて検出するようにしており、このため、太陽電池モジュール自体に高度な判断回路を設ける必要がなく、構造の複雑化が避けられており、また、太陽電池モジュールに予め個別識別情報を持たせる必要がなく、更に、設置時に個別識別情報と実際の設置場所とを対応させるための情報を故障検出手段に手動で設定する必要がないので、施工性が良く、太陽電池モジュールを交換した場合などのメンテナンスも簡単であり、太陽電池モジュールの状況を容易にかつ迅速に確認することが可能になっている。 According to the present invention, the individual identification information detecting means detects the individual identification information including the position information of the solar cell module, and the failure detection means detects the individual identification information (position information is included) from the solar cell module or the information. When the related information is received, the position information of the solar cell module corresponding to the individual identification information is obtained and stored based on the received information, and when the measurement data and the individual identification information from the solar cell module are received, the measurement data and Based on the individual identification information and the position information of the solar cell module corresponding to the individual identification information stored in advance, the malfunctioning solar cell module is detected including its installation location. It is not necessary to provide an advanced judgment circuit in the solar cell module itself, and the structure is prevented from becoming complicated. It is not necessary to have individual identification information in advance in the module, and it is not necessary to manually set information for associating the individual identification information with the actual installation location in the failure detection means at the time of installation. Maintenance such as when the solar cell module is replaced is also easy, and the status of the solar cell module can be easily and quickly confirmed.

実施の形態１．
図１は、本発明の実施の形態１における太陽光発電システムの全体構成を示すブロック図である。図１に示されるように、太陽電池モジュール１は、直列に接続され、発電を行う複数の太陽電池素子２と、この複数の太陽電池素子２に並列接続され、影等により発電できなくなったときに電流をバイパスする為のダイオード３、情報処理等を行うための制御回路４、発電電力を外部に出力する出力端子５等から構成される。そして、出力端子５は接続箱６を介して太陽電池の発電マネジメントを行う外部機器（以下、マネジメント機器１３という）に接続される。この太陽電池モジュール１は、同様な構成からなる太陽電池モジュール１Ａ、１Ｂと直列に接続されている。 Embodiment 1 FIG.
FIG. 1 is a block diagram showing the overall configuration of the photovoltaic power generation system according to Embodiment 1 of the present invention. As shown in FIG. 1, the solar cell module 1 is connected in series and generates a plurality of solar cell elements 2, and is connected in parallel to the plurality of solar cell elements 2, and cannot generate power due to a shadow or the like. And a control circuit 4 for performing information processing, an output terminal 5 for outputting generated power to the outside, and the like. The output terminal 5 is connected to an external device (hereinafter referred to as a management device 13) that performs power generation management of the solar cell via the connection box 6. This solar cell module 1 is connected in series with solar cell modules 1A and 1B having the same configuration.

制御回路４は、太陽電池素子２の発電電圧、発電電流、温度などを測定する測定手段８と、太陽電池モジュール１の外部へ情報を送信したり、外部からの信号を受信するための通信手段９、測定手段８及び通信手段９を制御したり、個別識別情報を検出する制御部１０、及び制御部１０によりデータの書き込み及び読み出しが行われる記憶部１１から構成される。なお、測定手段８は、電圧センサ、電流センサ、温度センサ、マイクロコンピュータ等を備えており、これらセンサからの信号をマイクロコンピュータのＣＰＵでデータ処理してデータの平均値やピーク値等を算出できるように構成されている。また、制御部１０にもデータ処理用のマイクロコンピュータが備えられており、これは本発明の個別識別情報検出手段としても機能する。また、通信手段９は、送信手段と受信手段から構成されており、送信手段には信号を変調して出力線に搬送波を重畳させる回路が、受信手段には信号を復調する回路がそれぞれ設けられている。 The control circuit 4 includes a measuring unit 8 that measures the generated voltage, generated current, temperature, and the like of the solar cell element 2 and a communication unit that transmits information to the outside of the solar cell module 1 and receives signals from the outside. 9, the control unit 10 that controls the measurement unit 8 and the communication unit 9 and detects individual identification information, and the storage unit 11 that writes and reads data by the control unit 10. The measuring means 8 includes a voltage sensor, a current sensor, a temperature sensor, a microcomputer, and the like, and the average value and peak value of the data can be calculated by processing the signals from these sensors with the CPU of the microcomputer. It is configured as follows. The control unit 10 is also provided with a data processing microcomputer, which also functions as the individual identification information detecting means of the present invention. The communication unit 9 includes a transmission unit and a reception unit. The transmission unit includes a circuit that modulates a signal and superimposes a carrier wave on an output line, and the reception unit includes a circuit that demodulates the signal. ing.

マネジメント機器１３は、系統連系インバータ７と、太陽電池モジュール１と信号の授受をして、故障した太陽電池モジュールを検出する故障検出制御装置（本発明の故障検出手段を構成する）１２とから構成される。故障検出制御装置１２は、太陽電池モジュール１、１Ａ、１Ｂとの間の信号の授受をする通信手段１４、各種のデータが記憶される記憶手段１５、及び故障した電池モジュールを検出するための各種演算処理をする演算手段１６から構成されており、演算手段１６は例えばマイクロコンピュータ等から構成されている。 The management device 13 includes a grid interconnection inverter 7 and a failure detection control device (which constitutes the failure detection means of the present invention) 12 that transmits and receives signals to and from the solar cell module 1 and detects a failed solar cell module. Composed. The failure detection control device 12 includes a communication unit 14 that exchanges signals with the solar cell modules 1, 1 A, and 1 B, a storage unit 15 that stores various data, and various types for detecting a failed battery module. The computing means 16 is configured to perform computation processing, and the computing means 16 is composed of, for example, a microcomputer.

次に、動作について説明する。
住宅や空き地、建物などに本実施形態に係る太陽光発電システムが設置された状態について説明する。太陽電池モジュール１は、屋根等に設置された後に、測定手段８により発電電圧、発電電流、太陽電池モジュール１の温度が測定され、それらの平均値やピーク値などのデータを制御部１０に送る。また、制御部１０は、測定手段８により測定されたデータに基づいて太陽電池モジュール１の個別識別を行って個別識別情報を作成する。測定手段８により測定されたデータや個別識別情報は記憶部１１に格納された後に、通信手段９を通じてマネジメント機器１３に送信することができる。 Next, the operation will be described.
A state in which the photovoltaic power generation system according to the present embodiment is installed in a house, a vacant land, a building, or the like will be described. After the solar cell module 1 is installed on the roof or the like, the measurement unit 8 measures the generated voltage, the generated current, and the temperature of the solar cell module 1, and sends data such as the average value and the peak value to the control unit 10. . Moreover, the control part 10 performs the individual identification of the solar cell module 1 based on the data measured by the measurement means 8, and produces individual identification information. Data and individual identification information measured by the measuring unit 8 can be transmitted to the management device 13 through the communication unit 9 after being stored in the storage unit 11.

マネジメント機器１３の故障検出制御装置１２には、設置初期には各太陽電池モジュールの個体を識別する情報は入力されていないが、次の（ａ）〜（ｃ）の処理をして個別識別情報を取得し、（ｄ）〜（ｇ）の処理をして故障した太陽電池モジュールを検出する。
（ａ）故障検出制御装置１２の演算手段１６は、特定の間隔で太陽電池モジュール全体に対し個別識別情報の送信命令を通信手段１４を介して発信する。
（ｂ）例えば太陽電池モジュール１の制御部１０は、通信手段９を通じてこの命令を認識すると、制御部１０により得られた個別識別情報を通信手段９を介して返信する。太陽電池モジュール１Ａ、１Ｂにおいても同様な処理がなされる。
（ｃ）故障検出制御装置１２の演算手段１６は、通信手段１４が太陽電池モジュール１、１Ａ、１Ｂからの個別識別情報を受信すると、その個別識別情報に基づいて該当する太陽電池モジュール１、１Ａ、１Ｂの位置情報をそれぞれ求め、接続されている太陽電池モジュールの総数、及び個別識別情報と太陽電池モジュールの設置情報との対応データを求めて記憶手段１５に記憶する。
なお、この故障検出制御装置１２が個別識別情報に基づいて太陽電池モジュールの設置場所を求める方法については、後述の実施の形態２及び実施の形態３において詳細に説明する。 Information for identifying individual solar cell modules is not input to the failure detection control device 12 of the management device 13 at the initial stage of installation, but individual identification information is obtained by performing the following processes (a) to (c). Is obtained, and the solar cell module that has failed is detected by performing the processes (d) to (g).
(A) The calculation means 16 of the failure detection control device 12 transmits a transmission command for individual identification information to the entire solar cell module via the communication means 14 at specific intervals.
(B) For example, when the control unit 10 of the solar cell module 1 recognizes this command through the communication unit 9, the individual identification information obtained by the control unit 10 is returned through the communication unit 9. The same processing is performed in the solar cell modules 1A and 1B.
(C) When the communication unit 14 receives the individual identification information from the solar cell modules 1, 1 A, 1 B, the calculation unit 16 of the failure detection control device 12 corresponds to the corresponding solar cell module 1, 1 A based on the individual identification information. 1B position information is obtained, and the total number of connected solar cell modules and the correspondence data between the individual identification information and the installation information of the solar cell modules are obtained and stored in the storage means 15.
In addition, the method in which this failure detection control apparatus 12 calculates | requires the installation location of a solar cell module based on separate identification information is demonstrated in detail in Embodiment 2 and Embodiment 3 mentioned later.

（ｄ）次に、故障検出制御装置１２の演算手段１６は、太陽電池モジュール１の個別識別情報とともにデータの送信命令を通信手段１４を介して発信する。
（ｅ）太陽電池モジュール１の制御部１０は、通信手段９を通じて自分がコールされたことを判断すると、測定手段８又はこれによって得られた測定データを格納した記憶部１１からデータを読み出してその個別識別情報とともに通信手段９を介して返信する。
（ｆ）故障検出制御装置１２の演算手段１６は、通信手段１４が太陽電池モジュール１からのデータを受信すると、そのデータを記憶手段１５に保存する。そして、次の太陽電池モジュール１Ａに同様の指令を送り、同様な作業を繰り返していく。 (D) Next, the calculation means 16 of the failure detection control device 12 transmits a data transmission command together with the individual identification information of the solar cell module 1 via the communication means 14.
(E) When the control unit 10 of the solar cell module 1 determines that it is called through the communication unit 9, the control unit 10 reads the data from the measurement unit 8 or the storage unit 11 storing the measurement data obtained by the measurement unit 8. It returns with the individual identification information via the communication means 9.
(F) When the communication unit 14 receives data from the solar cell module 1, the calculation unit 16 of the failure detection control device 12 stores the data in the storage unit 15. And the same instruction | command is sent to the next solar cell module 1A, and the same operation | work is repeated.

（ｇ）故障検出制御装置１２の演算手段１６は、このようにして、全ての太陽電池モジュール（１、１Ａ、１Ｂ）のデータを収集した後に、それらのデータを比較・検証して、太陽電池モジュールの故障の有無を判定し、太陽電池モジュールの故障の有りと判定された場合には、故障した太陽電池モジュールをその設置箇所も含めて検出する。即ち、故障検出制御装置１２の演算手段１６は、太陽電池モジュール（１、１Ａ、１Ｂ）からの測定データ及び個別識別情報と、記憶手段１５に予め記憶されている個別識別情報に対応した太陽電池モジュールの位置情報とに基づいて、故障している太陽電池モジュールをその設置場所を含めて検出し、例えば表示装置や警報装置（何れも図示せず）により故障した太陽電池モジュールがあることを報知する。 (G) The operation means 16 of the failure detection control device 12 collects data of all the solar cell modules (1, 1A, 1B) in this way, and then compares and verifies the data to obtain the solar cell. The presence / absence of a module failure is determined. If it is determined that the solar cell module is defective, the faulty solar cell module is detected including its installation location. That is, the calculation means 16 of the failure detection control device 12 is a solar cell corresponding to the measurement data and individual identification information from the solar cell modules (1, 1A, 1B) and the individual identification information stored in the storage means 15 in advance. Based on the module position information, the faulty solar cell module is detected including its installation location, and a faulty solar cell module is notified by, for example, a display device or an alarm device (both not shown). To do.

以上のように本実施の形態１においては、制御部１０が太陽電池モジュール１、１Ａ、１Ｂの位置情報を内在する個別識別情報を検出し、故障検出制御装置１２の通信手段１４が、太陽電池モジュール１、１Ａ、１Ｂからの個別識別情報（位置情報を内在）を受信すると、演算手段１６は受信した情報に基づいて個別識別情報に対応した太陽電池モジュール１、１Ａ、１Ｂの位置情報を求めて記憶手段１５に記憶するようにしており、そして、通信手段１４が太陽電池モジュール１、１Ａ、１Ｂからの測定データ及び個別識別情報を受信すると、演算手段１６はその測定データ及び個別識別情報と、予め記憶されている個別識別情報に対応した太陽電池モジュール１、１Ａ、１Ｂの位置情報とに基づいて故障の有無を判定し、故障している太陽電池モジュールをその設置場所を含めて検出するようにしており、このため、太陽電池モジュール自体に高度な判断回路を設ける必要がなく、構造の複雑化が避けられており、また、太陽電池モジュールに予め個別識別情報を持たせる必要がなく、更に、設置時に個別識別情報と実際の設置場所とを対応させるための情報を故障検出制御装置１２に手動で設定する必要がないので、施工性が良く、太陽電池モジュールを交換した場合などのメンテナンスも簡単であり、太陽電池モジュールの状況を容易にかつ迅速に確認することが可能になっている。 As described above, in the first embodiment, the control unit 10 detects the individual identification information including the positional information of the solar cell modules 1, 1 A, 1 B, and the communication unit 14 of the failure detection control device 12 When receiving the individual identification information (position information is inherent) from the modules 1, 1A, 1B, the calculation means 16 obtains the position information of the solar cell modules 1, 1A, 1B corresponding to the individual identification information based on the received information. When the communication means 14 receives the measurement data and the individual identification information from the solar cell modules 1, 1A, 1B, the calculation means 16 receives the measurement data and the individual identification information. The presence / absence of failure is determined based on the position information of the solar cell modules 1, 1A, 1B corresponding to the individual identification information stored in advance. The battery module is detected including its installation location. Therefore, it is not necessary to provide an advanced judgment circuit in the solar cell module itself, so that the structure is not complicated. It is not necessary to have the individual identification information in advance, and it is not necessary to manually set information for associating the individual identification information with the actual installation location in the failure detection control device 12 at the time of installation. Maintenance such as when the solar cell module is replaced is also easy, and the status of the solar cell module can be easily and quickly confirmed.

実施の形態２．
次に、実施の形態１において、故障検出制御装置１２が太陽電池モジュール１の個別識別情報とそれに対応した太陽電池モジュール１の位置情報を取得する例を実施の形態２として説明する。この実施の形態２においては、太陽電池モジュール１、１Ａ、１Ｂが直列に接続されていることから、各太陽電池モジュールでの電圧は一意に決まることを利用している。 Embodiment 2. FIG.
Next, in Embodiment 1, an example in which the failure detection control device 12 acquires the individual identification information of the solar cell module 1 and the corresponding position information of the solar cell module 1 will be described as Embodiment 2. In this Embodiment 2, since the solar cell modules 1, 1A, 1B are connected in series, the voltage at each solar cell module is uniquely determined.

図２は太陽電池モジュール１、１Ａ、１Ｂの電圧の関係を示した説明図である。
図２において例えば各太陽電池モジュールの出力電圧が仮に２５Ｖであるとすると、太陽電池モジュール１の出力端ａにおける電圧は７５Ｖ、同様に太陽電池モジュール１Ａの出力端ｂでは５０Ｖ、太陽電池モジュール１Ｂの出力端ｃでは２５Ｖとなる。 FIG. 2 is an explanatory diagram showing the relationship of the voltages of the solar cell modules 1, 1A, 1B.
In FIG. 2, for example, assuming that the output voltage of each solar cell module is 25V, the voltage at the output terminal a of the solar cell module 1 is 75V, similarly, 50V at the output terminal b of the solar cell module 1A, At the output terminal c, it becomes 25V.

故障検出制御装置１２は、次のように処理して太陽電池モジュール１、１Ａ、１Ｂの個別識別情報とそれに対応した太陽電池モジュール１の位置情報を取得する。
（ａ）故障検出制御装置１２の演算手段１６は、特定の間隔で太陽電池モジュール全体に対し個別識別情報の送信命令を通信手段１４を介して発信する。
（ｂ）太陽電池モジュール１、１Ａ、１Ｂの制御部１０は、通信手段９を通じてこの命令を受信し認識すると次の処理を行わせる。
（ｂ１）測定手段８により各自の電圧を測定する。例えば一番近くの太陽電池モジュール１の個別識別情報は７５Ｖ、真中の太陽電池モジュール１Ａの個別識別情報は５０Ｖ、最後の太陽電池モジュール１Ｂの個別識別情報は２５Ｖとなる。
（ｂ２）制御部１０はその電圧値を自己の個別識別情報として認識して記憶部１１に記憶する。
（ｂ３）通信手段９は、その個別識別情報を故障検出制御装置１２に返信する。
（ｃ）故障検出制御装置１２の演算手段１６は、通信手段１４が太陽電池モジュール１、１Ａ、１Ｂから個別識別情報を受信すると、その情報を記憶手段１５に記憶するとともに、各値をソート比較することで全ての太陽電池モジュール１、１Ａ、１Ｂの数と位置情報を求めて記憶手段１５に記憶する。例えば一番近くの太陽電池モジュール１の個別識別情報は７５、真中の太陽電池モジュール１Ａの個別識別情報は５０、最後の太陽電池モジュール１Ｂの個別識別情報は２５になっている。これらの個別識別情報（７５、５０、２５）により太陽電池モジュールの位置箇所を特定することができるので、太陽電池モジュール１、１Ａ、１Ｂのそれぞれの位置情報が得られる。 The failure detection controller 12 obtains the individual identification information of the solar cell modules 1, 1 A, 1 B and the corresponding position information of the solar cell module 1 by performing the following process.
(A) The calculation means 16 of the failure detection control device 12 transmits a transmission command for individual identification information to the entire solar cell module via the communication means 14 at specific intervals.
(B) When the control unit 10 of the solar cell modules 1, 1 A, 1 B receives and recognizes this command through the communication unit 9, it performs the following process.
(B1) Each voltage is measured by the measuring means 8. For example, the individual identification information of the nearest solar cell module 1 is 75V, the individual identification information of the middle solar cell module 1A is 50V, and the individual identification information of the last solar cell module 1B is 25V.
(B2) The control unit 10 recognizes the voltage value as its own individual identification information and stores it in the storage unit 11.
(B3) The communication unit 9 returns the individual identification information to the failure detection control device 12.
(C) When the communication means 14 receives the individual identification information from the solar cell modules 1, 1A, 1B, the calculation means 16 of the failure detection control device 12 stores the information in the storage means 15 and sorts and compares each value. By doing so, the number and position information of all the solar cell modules 1, 1A, 1B are obtained and stored in the storage means 15. For example, the individual identification information of the nearest solar cell module 1 is 75, the individual identification information of the middle solar cell module 1A is 50, and the individual identification information of the last solar cell module 1B is 25. Since the position location of the solar cell module can be specified by the individual identification information (75, 50, 25), the position information of each of the solar cell modules 1, 1A, 1B is obtained.

以上のように本実施の形態２においては、太陽電池モジュール１、１Ａ、１Ｂは、故障検出制御装置１２からの個別識別情報送信の命令を通信手段９を介して受信すると、測定手段８は、太陽電池モジュール１、１Ａ、１Ｂの電圧を測定し、制御部１０は、測定手段８により測定された電圧を個別識別情報と認識し、記憶部１１に格納し、通信手段９が、個別識別情報を故障検出制御装置１２に送信し、故障検出制御装置１２の演算手段１６は、通信手段１４が太陽電池モジュールから個別識別情報を受信すると、その個別識別情報を記憶手段１５に記憶するとともに、当該個別識別情報に対応した当該太陽電池モジュールの位置情報を求めて記憶手段１５に記憶するようにしたので、太陽電池モジュール１、１Ａ、１Ｂに予め個別識別情報を持たせる必要がなく、更に、設置時に個別識別情報と実際の設置場所とを対応させるための情報を故障検出制御装置１２に手動で設定する必要がないので、施工性が良く、太陽電池モジュールを交換した場合においても個別識別情報の再設定が簡単にできるので、メンテナンスの手間も大幅に省略可能となる。 As described above, in the second embodiment, when the solar cell modules 1, 1A, 1B receive the individual identification information transmission command from the failure detection control device 12 via the communication unit 9, the measurement unit 8 The voltage of the solar cell modules 1, 1A, 1B is measured, the control unit 10 recognizes the voltage measured by the measuring unit 8 as individual identification information, stores it in the storage unit 11, and the communication unit 9 receives the individual identification information. When the communication means 14 receives the individual identification information from the solar cell module, the calculation means 16 of the failure detection control apparatus 12 stores the individual identification information in the storage means 15 and Since the position information of the solar cell module corresponding to the individual identification information is obtained and stored in the storage means 15, the individual identification information is stored in advance in the solar cell modules 1, 1A, 1B. In addition, it is not necessary to manually set information for associating the individual identification information with the actual installation location in the failure detection control device 12 at the time of installation. Even in the case of replacement, the individual identification information can be easily reset, so that maintenance work can be greatly omitted.

実施の形態３．
次に、実施の形態１において、故障検出制御装置１２が太陽電池モジュール１の個別識別情報とそれに対応した太陽電池モジュール１の位置情報を取得する他の例を実施の形態３として説明する。この実施の形態３においても、太陽電池モジュール１、１Ａ、１Ｂが直列に接続されていることから、各太陽電池モジュールでの出力電圧は一意に決まることを利用している。 Embodiment 3 FIG.
Next, in the first embodiment, another example in which the failure detection control device 12 acquires the individual identification information of the solar cell module 1 and the position information of the solar cell module 1 corresponding thereto will be described as the third embodiment. Also in the third embodiment, since the solar cell modules 1, 1A, 1B are connected in series, the fact that the output voltage in each solar cell module is uniquely determined is utilized.

図２において、上記の実施の形態２と同様に、例えば各太陽電池モジュールの出力電圧が２５Ｖであるとすると、太陽電池モジュール１の出力端ａにおける電圧は７５Ｖ、同様に太陽電池モジュール１Ａの出力端ｂでは５０Ｖ、太陽電池モジュール１Ｂの出力端ｃでは２５Ｖとなる。 In FIG. 2, if the output voltage of each solar cell module is 25V, for example, as in the second embodiment, the voltage at the output terminal a of the solar cell module 1 is 75V, and similarly the output of the solar cell module 1A. The end b is 50V, and the output end c of the solar cell module 1B is 25V.

故障検出制御装置１２は、次のように処理して太陽電池モジュール１、１Ａ、１Ｂの個別識別情報とそれに対応した太陽電池モジュール１の位置情報を取得する。
（ａ）故障検出制御装置１２の演算手段１６は、最小電圧値２５Ｖを初期個別識別情報として各太陽電池モジュール１、１Ｂ、１Ｃに個別識別情報の送信命令を通信手段１４を介して発信する。
（ｂ）太陽電池モジュール１、１Ａ、１Ｂの制御部１０は、通信手段９を通じてこの命令を受信し認識すると次の処理を行わせる。
（ｂ１）測定手段８により各自の電圧を測定する。例えば太陽電池モジュール１Ｂの個別識別情報は２５Ｖとなる。
（ｂ２）制御部１０は、その電圧値を自己の個別識別情報として認識して記憶部１１に記憶するとともに、この個別識別情報と故障検出制御装置１２からの個別識別情報とを対比し、合致するかどうかを判定する。
（ｂ３）前記判定において合致するという判定がなされた場合には、通信手段９は、該当する個別識別情報の太陽電池モジュールがある旨の情報（本発明の個別情報に関連した情報に相当する）を故障検出制御装置１２に送信する。
（ｃ）故障検出制御装置１２の演算手段１６は、通信手段１４を介して該当ありの返信があった場合には、その個別識別情報「２５」は図２の例では最後の太陽電池モジュール１Ｂであることが分かるので、個別識別情報を位置情報として取得することができる。次に、故障検出制御装置１２の演算手段１６は、次の電圧値である５０に該当がないかを再び太陽電池モジュール１、１Ａ、１Ｃに通信手段１４を介して発信する。このようして該当ありの返信がなくなるまで繰り返すことで、全ての太陽電池モジュールの数と位置情報を求めて記憶手段１５に記憶する。 The failure detection controller 12 obtains the individual identification information of the solar cell modules 1, 1 A, 1 B and the corresponding position information of the solar cell module 1 by performing the following process.
(A) The calculation means 16 of the failure detection control device 12 transmits a transmission command of individual identification information to each of the solar cell modules 1, 1 B, 1 C through the communication means 14 with the minimum voltage value 25 V as initial individual identification information.
(B) When the control unit 10 of the solar cell modules 1, 1 A, 1 B receives and recognizes this command through the communication unit 9, it performs the following process.
(B1) Each voltage is measured by the measuring means 8. For example, the individual identification information of the solar cell module 1B is 25V.
(B2) The control unit 10 recognizes the voltage value as its own individual identification information and stores it in the storage unit 11, compares the individual identification information with the individual identification information from the failure detection control device 12, and matches them. Determine whether to do.
(B3) If it is determined in the determination that the two match, the communication means 9 is information indicating that there is a solar cell module of the corresponding individual identification information (corresponding to information related to the individual information of the present invention). Is transmitted to the failure detection control device 12.
(C) When the calculation means 16 of the failure detection control device 12 returns a corresponding response via the communication means 14, the individual identification information “25” is the last solar cell module 1B in the example of FIG. Therefore, individual identification information can be acquired as position information. Next, the calculation means 16 of the failure detection control device 12 transmits again to the solar cell modules 1, 1 A, 1 C via the communication means 14 whether or not the next voltage value 50 is applicable. By repeating until there is no corresponding reply in this way, the number and position information of all the solar cell modules are obtained and stored in the storage means 15.

なお、上記の説明においては、個別識別情報を２５、５０…という順序で故障検出制御装置１２から送信する例について説明したが、その逆に、個別識別番号を７５、５０、２５の順番で送信するようにしてもよいし、或いは、５０、７５、２５という順序で送信するようにしてもよい。 In the above description, the example in which the individual identification information is transmitted from the failure detection control device 12 in the order of 25, 50,..., But conversely, the individual identification numbers are transmitted in the order of 75, 50, 25. Alternatively, it may be transmitted in the order of 50, 75, 25.

以上のように本実施の形態３においては、太陽電池モジュール１、１Ａ、１Ｂは、故障検出制御装置１２から個別識別情報を含んだ個別識別情報送信命令を通信手段９を介して受信すると、測定手段８が太陽電池モジュールの出力電圧を測定し、制御部１０は、測定手段８により測定された電圧を個別識別情報と認識し、記憶部１１に格納するとともに、その個別識別情報と故障検出制御装置１２からの個別識別情報とを対比し、合致するかどうかを判定し、合致するという判定がなされた場合には、通信手段９は、該当する個別識別情報の太陽電池モジュールがある旨の情報を故障検出制御装置１２に送信し、故障検出制御装置１２の演算手段１６は、通信手段１４が太陽電池モジュール（１、１Ａ、１Ｂ）から該当の個別識別情報の太陽電池モジュールがある旨の情報を受信すると、次に、先に送信した太陽光モジュールの次の太陽光モジュールの電圧値を個別識別情報とし、当該個別識別情報を含んだ個別識別情報送信命令を通信手段１４を介して太陽光モジュールに送信するという処理を、太陽電池モジュールから該当する個別識別情報の太陽電池モジュールがある旨の情報の受信が無くなるまで繰り返し、そして、全ての太陽電池モジュールの数と位置情報を求めて記憶手段１５に記憶するようにしており、このため、太陽電池モジュール１、１Ａ、１Ｂに予め個別識別情報を持たせる必要がなく、更に、設置時に個別識別情報と実際の設置場所とを対応させるための情報を故障検出制御装置１２に手動で設定する必要がないので、施工性が良く、太陽電池モジュールを交換した場合においても個別識別情報の再設定が簡単にできるので、メンテナンスの手間も大幅に省略可能となる。 As described above, in the third embodiment, solar cell modules 1, 1 A, 1 B measure when receiving an individual identification information transmission command including individual identification information from failure detection control device 12 via communication means 9. The means 8 measures the output voltage of the solar cell module, and the control unit 10 recognizes the voltage measured by the measuring means 8 as individual identification information and stores it in the storage unit 11, and the individual identification information and failure detection control. In contrast to the individual identification information from the device 12, it is determined whether or not they match, and if it is determined that they match, the communication means 9 determines that there is a solar cell module of the corresponding individual identification information. Is transmitted to the failure detection control device 12, and the calculation means 16 of the failure detection control device 12 is configured so that the communication means 14 receives the solar of the corresponding individual identification information from the solar cell module (1, 1 A, 1 B) When information indicating that there is a pond module is received, the voltage value of the solar module next to the previously transmitted solar module is used as individual identification information, and an individual identification information transmission command including the individual identification information is communicated. The process of transmitting to the solar module via the means 14 is repeated until no information indicating that there is a solar cell module of the corresponding individual identification information from the solar cell module is lost, and the number of all solar cell modules The position information is obtained and stored in the storage means 15, so that it is not necessary to give the individual identification information to the solar cell modules 1, 1A, 1B in advance. Since it is not necessary to manually set the information for associating with the failure detection control device 12, the workability is good and the solar cell module Since it easier to reset the individual identification information even when the conversion, a significant optional also troublesome maintenance.

実施の形態４．
上記の実施の形態１においては、太陽電池モジュールからの測定データに異常が発生した場合に故障と検知し、その太陽電池モジュールをその位置を含めて特定することにより、太陽電池モジュールの故障の有無と個体の特定を迅速に識別することができるとした例について説明したが、故障検出制御装置１２の演算手段１６が太陽電池モジュールからの測定データを通信手段１４を介して定期的に取得したものを記憶手段１５に長期間記録しておくことにより、変化の度合いを監視することで故障が発生する前に異常を検知し、経年劣化で不良が発生することを未然に防ぐように制御することもできる。 Embodiment 4 FIG.
In the above-described first embodiment, whether or not there is a failure in the solar cell module is detected by detecting a failure when abnormality occurs in the measurement data from the solar cell module and specifying the solar cell module including its position. In this example, the calculation unit 16 of the failure detection control device 12 periodically acquires measurement data from the solar cell module via the communication unit 14. Is recorded in the storage means 15 for a long period of time, by monitoring the degree of change, an abnormality is detected before a failure occurs, and control is performed so as to prevent the occurrence of defects due to deterioration over time. You can also.

なお、上述の実施の形態において、設定された数値は一例であり、適応する太陽光発電システムに応じて適切に設定する必要があることはいうまでもない。 In the above-described embodiment, the set numerical value is an example, and needless to say, it is necessary to set appropriately according to the solar power generation system to be adapted.

本発明の実施の形態１に係る太陽光発電システムの構成図である。It is a block diagram of the solar energy power generation system which concerns on Embodiment 1 of this invention. 太陽電池モジュールの電圧の関係を示した説明図である。It is explanatory drawing which showed the relationship of the voltage of a solar cell module.

Explanation of symbols

１太陽電池モジュール、２太陽電池素子、３ダイオード、４制御回路、５出力端子、６接続箱、７系統連系インバータ、８測定手段、９通信手段、１０制御部、１１記憶部、１２故障検出制御装置、１３マネジメント機器、１４通信手段、１５記憶手段、１６演算手段。 DESCRIPTION OF SYMBOLS 1 Solar cell module, 2 Solar cell element, 3 Diode, 4 Control circuit, 5 Output terminal, 6 Connection box, 7 Grid connection inverter, 8 Measuring means, 9 Communication means, 10 Control part, 11 Storage part, 12 Failure detection Control device, 13 management device, 14 communication means, 15 storage means, 16 calculation means.

Claims

A plurality of solar cell modules connected in series;
In a photovoltaic power generation system comprising failure detection means for detecting a broken solar cell module among the plurality of solar cell modules connected in series,
Each of the plurality of solar cell modules connected in series is
Communication means for transmitting and receiving signals to and from the failure detection means;
Measuring means for measuring the voltage and temperature of the solar cell module, which is a characteristic of the solar cell module, under predetermined conditions;
Individual identification information detecting means for detecting individual identification information inherent in position information of the solar cell module;
Storage means for storing measurement data obtained by the measurement means and individual identification information of the solar cell module obtained by the individual identification information detection means,
Individual identification information obtained by the individual identification information detection means or information related to the information, or measurement data obtained by the measurement means and individual identification information of the solar cell module obtained by the individual identification information detection means It is possible to transmit from the communication means to the failure detection means,
The failure detection means includes
Upon receiving the individual identification information from the solar cell module or information related to the information, the position information of the solar cell module corresponding to the individual identification information is obtained and stored based on the received information,
When the measurement data and the individual identification information from the solar cell module are received, the measurement data and the individual identification information are failed based on the position information of the solar cell module corresponding to the individual identification information stored in advance. Detect the solar cell module including its installation location,
The individual identification information detection means , based on the voltage value measured by the measurement means, calculates the voltage value at the output end of each solar cell module with respect to a common potential of the plurality of solar cell modules. Recognizing each individual identification information and storing it in the storage means.

When the solar cell module receives an individual identification information transmission command from the failure detection means via the communication means,
The measuring means measures the voltage of the solar cell module;
The individual identification information detection unit recognizes the voltage measured by the measurement unit as individual identification information, stores the voltage in the storage unit,
The communication means transmits the individual identification information to the failure detection means,
The failure detection means includes
Send individual identification information transmission command to the solar cell module,
When the individual identification information is transmitted from the solar cell module, the individual identification information is stored, and the position information of the solar cell module corresponding to the individual identification information is obtained and stored. The solar power generation system according to 1.

When the solar cell module receives an individual identification information transmission command including individual identification information from the failure detection means via the communication means,
The measuring means measures the voltage of the solar cell module;
The individual identification information detection unit recognizes the voltage measured by the measurement unit as individual identification information, stores the voltage in the storage unit, and compares the individual identification information with the individual identification information from the failure detection unit. Determine if they match,
When it is determined that the communication means matches in the determination, the communication means transmits information indicating that there is a solar cell module of the corresponding individual identification information to the failure detection means,
The failure detection means includes
The voltage value of any of the solar cell modules connected in series is the individual identification information, and an individual identification information transmission command including the individual identification information is transmitted to the solar cell module,
When receiving information indicating that there is a solar cell module of the corresponding individual identification information from the solar cell module, next, the voltage value of the solar cell module next to the previously transmitted solar cell module is used as the individual identification information, and the individual The process of transmitting an individual identification information transmission command including identification information to the solar cell module is repeated until there is no reception of information indicating that there is a solar cell module of the corresponding individual identification information from the solar cell module,
2. The photovoltaic power generation system according to claim 1, wherein the position information of the solar cell module corresponding to the individual identification information that the corresponding individual identification information is present is obtained and stored.

The failure detection means periodically acquires and stores the measurement data from the solar cell module, and monitors the degree of change in the stored measurement data. The photovoltaic power generation system described in 1.

A plurality of solar cell modules connected in series;
In the fault solar cell module detection method of the solar power generation system, comprising a fault detection means for detecting a faulty solar cell module among the plurality of solar cell modules connected in series,
An individual identification information transmission command is transmitted from the failure detection means to the solar cell module, and when the solar cell module receives an individual identification information transmission command from the failure detection means, the characteristic of each solar cell module Measuring the voltage and temperature of the solar cell module;
Detecting the voltage of the solar cell module, which is the individual identification information inherent in the position information of each solar cell module;
The voltage value of the output terminal of each solar cell module with respect to a common potential of the plurality of solar cell modules that is individual identification information of each solar cell module or information related to the voltage of the solar cell module that is the individual identification information Transmitting to the failure detection means;
In the failure detection means, when receiving information related to the voltage of the solar cell module as the individual identification information from the solar cell module or the voltage of the solar cell module as the information, the individual identification information is based on the received information. Obtaining and storing position information of a solar cell module corresponding to a voltage of a certain solar cell module;
Transmitting measurement data and individual identification information from each solar cell module to the failure detection means;
In the failure detection means, when the measurement data and the individual identification information from the solar cell module are received, a failure occurs based on the received information and the position information of the solar cell module corresponding to the individual identification information stored in advance. And a step of detecting a solar cell module including the installation location thereof. A method for detecting a faulty solar cell module of a solar power generation system.

The plurality of solar cell modules are connected in series,
In the failure detection means, the voltage value of any one of the solar cell modules connected in series is used as individual identification information, and an individual identification information transmission command including the individual identification information is transmitted to the solar cell module,
When the solar cell module receives an individual identification information transmission command including individual identification information from the failure detection means,
Measuring the voltage of the solar cell module;
Recognizing and storing the measured voltage value as individual identification information, comparing the individual identification information and the individual identification information from the failure detection means, determine whether or not they match,
When it is determined that they match in the determination, information indicating that there is a solar cell module of the corresponding individual identification information is transmitted to the failure detection means,
When the failure detection means receives information from the solar cell module that there is a solar cell module of the corresponding individual identification information, next, the voltage value of the solar cell module next to the previously transmitted solar cell module is individually The process of transmitting the individual identification information transmission command including the individual identification information to the solar cell module as the identification information is received from the solar cell module as information indicating that the corresponding individual identification information solar cell module is present. Repeat until it disappears,
The said failure detection means calculates | requires and memorize | stores the positional information on the said solar cell module corresponding to the individual identification information that there exists the solar cell module of applicable individual identification information from the said solar cell module. The fault solar cell module detection method of the described solar power generation system.

The said failure detection means acquires the said measurement data from the said solar cell module regularly, and memorize | stores it, The degree of change of the memorize | stored measurement data is monitored. A method for detecting a faulty solar cell module in a solar power generation system.

A communication means for transmitting and receiving signals to and from the failure detection control device of the plurality of solar cell modules connected in series with the outside;
Measuring means for measuring the voltage and temperature of the solar cell modules, which are characteristics of the plurality of solar cell modules connected in series, under predetermined conditions;
Individual identification information detecting means for detecting individual identification information inherent in position information of the solar cell module;
Storage means for storing the measurement data obtained by the measurement means and the individual identification information of the solar cell module obtained by the individual identification information detection means,
Individual identification information obtained by the individual identification information detection means or information related to the information, or measurement data obtained by the measurement means and individual identification information of the solar cell module obtained by the individual identification information detection means Can be transmitted from the communication means to the failure detection control device,
The individual identification information detection means , based on the voltage value measured by the measurement means, calculates the voltage value at the output end of each solar cell module with respect to a common potential of the plurality of solar cell modules. A control circuit for a solar cell module, which is recognized as individual identification information and stored in the storage means.

When the communication means receives an individual identification information transmission command from the failure detection control device via the communication means,
The measuring means measures the voltage of the solar cell module;
The individual identification information detection unit recognizes the voltage measured by the measurement unit as individual identification information, stores the voltage in the storage unit,
9. The solar cell module control circuit according to claim 8, wherein the communication means transmits the individual identification information to the failure detection control device.

When the communication means receives from the failure detection control device via an individual identification information transmission command including individual identification information,
The measuring means measures the voltage of the solar cell module;
The individual identification information detection unit recognizes the voltage measured by the measurement unit as individual identification information, stores the voltage in the storage unit, and compares the individual identification information with the individual identification information from the failure detection control device. And determine whether they match,
The said communication means transmits the information that there exists a solar cell module of applicable individual identification information to the said failure detection control apparatus, when it determines with matching in the said determination. The control circuit of the described solar cell module.