JP2020198711A - Abnormality detection system and abnormality detection method of photovoltaic power generation facility - Google Patents

Abnormality detection system and abnormality detection method of photovoltaic power generation facility Download PDF

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JP2020198711A
JP2020198711A JP2019103789A JP2019103789A JP2020198711A JP 2020198711 A JP2020198711 A JP 2020198711A JP 2019103789 A JP2019103789 A JP 2019103789A JP 2019103789 A JP2019103789 A JP 2019103789A JP 2020198711 A JP2020198711 A JP 2020198711A
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consumer
power generation
photovoltaic power
generation facility
customer
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直紀 福本
Naoki Fukumoto
直紀 福本
小野 進
Susumu Ono
進 小野
健一郎 布上
Kenichiro Nunogami
健一郎 布上
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Chugoku Electric Power Co Inc
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00Integration of renewable energy sources in buildings
    • Y02B10/10Photovoltaic [PV]
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy
    • Y02E10/56Power conversion systems, e.g. maximum power point trackers
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E40/00Technologies for an efficient electrical power generation, transmission or distribution
    • Y02E40/70Smart grids as climate change mitigation technology in the energy generation sector
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04SSYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S10/00Systems supporting electrical power generation, transmission or distribution
    • Y04S10/12Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation
    • Y04S10/123Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation the energy generation units being or involving renewable energy sources

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  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)
  • Supply And Distribution Of Alternating Current (AREA)

Abstract

To detect an abnormality in a photovoltaic power generation facility early and appropriately without imposing a burden on a consumer.SOLUTION: An abnormality detection method of a photovoltaic power generation facility includes steps of measuring and storing a forward power flow to a consumer M side and a reverse power flow from the customer M side, selecting the consumer M located in an area where the weather is at least the same as that of a target consumer M1 as a reference consumer M2 based on these measured values, and determining whether a photovoltaic power generation facility 2 of the target consumer M1 is abnormal based on a measured value of the target consumer M1 and a measured value of the reference consumer M2 in the near period going back a predetermined period from the present time.SELECTED DRAWING: Figure 1

Description

この発明は、太陽光発電設備の異常を検出する太陽光発電設備の異常検出システムおよび異常検出方法に関する。 The present invention relates to an abnormality detection system and an abnormality detection method for a photovoltaic power generation facility that detects an abnormality in the photovoltaic power generation facility.

近年、住宅などに太陽光発電設備を設置し、昼間に太陽光発電設備で発電された電力を使用するとともに、その余剰電力を電力事業者に売電する需要家が増えている。このような需要家においては、太陽光発電設備が故障したり、停電後に自動復旧できなかったりして発電できない状況であっても、電力事業者からの電力供給を受けていれば気づかないことが多く、このような状況が長期間続くと、売電による収入が得られないことになる。 In recent years, an increasing number of consumers have installed photovoltaic power generation facilities in houses and the like to use the power generated by the photovoltaic power generation facilities in the daytime and sell the surplus power to electric power companies. For such consumers, even if the photovoltaic power generation equipment breaks down or cannot be automatically restored after a power outage, it may not be noticed if the power is supplied by the electric power company. In many cases, if such a situation continues for a long period of time, it will not be possible to earn income from selling electricity.

このため、太陽光発電設備の異常を検出してユーザに通知する仕組みが求められるが、異常を検出するセンサや回路、通信手段などを太陽光発電設備ごとに設けると、設備費や維持費が嵩んでしまうばかりでなく、既存の太陽光発電設備に設けることが困難である。一方、発電量低下の要因を分析して経時的に発電量を低下させる要因についても把握できる、という太陽光発電管理装置が知られている(例えば、特許文献1参照。)。この装置は、発電量を用いて発電効率を算出し、日射量と太陽光発電パネルの温度を用いて発電効率の理想値を算出し、算出した発電効率と理想値との比である理想度が経時的に低下しているか否かを判定するものである。 For this reason, a mechanism for detecting an abnormality in the photovoltaic power generation equipment and notifying the user is required. However, if a sensor, a circuit, a communication means, etc. for detecting the abnormality are provided for each photovoltaic power generation equipment, the equipment cost and the maintenance cost will increase. Not only is it bulky, but it is also difficult to install in existing photovoltaic power generation facilities. On the other hand, there is known a photovoltaic power generation management device that can analyze the factors that reduce the amount of power generation and grasp the factors that reduce the amount of power generation over time (see, for example, Patent Document 1). This device calculates the power generation efficiency using the amount of power generation, calculates the ideal value of the power generation efficiency using the amount of solar radiation and the temperature of the photovoltaic power generation panel, and is the ratio of the calculated power generation efficiency to the ideal value. Is to determine whether or not is decreasing over time.

特開2015−47030号公報JP-A-2015-47030

しかしながら、特許文献1に記載の装置では、日射計や温度計などを需要家ごとに設けなければならず、設備費や維持費が嵩み需要家の負担が大きい。また、太陽光発電パネルの経時的な劣化やその要因を知得できるだけであり、現時点において発電停止などの異常が発生しているか否かを早期に知得できるものではない。 However, in the apparatus described in Patent Document 1, a pyranometer, a thermometer, and the like must be provided for each customer, and the equipment cost and maintenance cost are high, which imposes a heavy burden on the customer. In addition, it is only possible to know the deterioration of the photovoltaic power generation panel over time and its factors, and it is not possible to know at an early stage whether or not an abnormality such as power generation stoppage has occurred at this time.

そこでこの発明は、需要家への負担がなく、しかも、太陽光発電設備の停止などの異常を早期かつ適正に検出可能な、太陽光発電設備の異常検出システムおよび異常検出方法を提供することを目的とする。 Therefore, the present invention provides an abnormality detection system and an abnormality detection method for photovoltaic power generation facilities, which can detect abnormalities such as shutdown of photovoltaic power generation facilities at an early stage and appropriately without burdening consumers. The purpose.

上記課題を解決するために、請求項1の発明は、太陽光発電設備が設けられた各需要家に配設され、配電系統から前記需要家側への順潮流と、前記需要家側から前記配電系統への逆潮流とを計量する計量器と、前記各計量器による計量値を記憶する計量値記憶手段と、前記各計量値に基づいて、監視対象の需要家と少なくとも天候が同じエリアに所在する需要家を参照需要家として選出し、現時点から所定期間遡った近期間における前記監視対象の需要家の計量値と前記参照需要家の計量値とに基づいて、前記監視対象の需要家の太陽光発電設備が異常であるか否かを判定する検出手段と、を備えることを特徴とする太陽光発電設備の異常検出システムである。 In order to solve the above problems, the invention of claim 1 is arranged for each customer provided with a photovoltaic power generation facility, and the forward power flow from the distribution system to the customer side and the forward flow from the customer side to the customer side are described. A measuring instrument for measuring the reverse power flow to the distribution system, a measuring value storage means for storing the measured value by each measuring instrument, and an area where the weather is at least the same as that of the monitored consumer based on each measured value. The located consumer is selected as the reference consumer, and the monitored consumer is based on the measured value of the monitored consumer and the measured value of the reference consumer in the near period retroactively from the present time by a predetermined period. It is an abnormality detection system of a photovoltaic power generation facility, which comprises a detection means for determining whether or not the photovoltaic power generation facility is abnormal.

請求項2の発明は、請求項1に記載の異常検出システムにおいて、前記検出手段は、前記監視対象の需要家の計量値において、所定値以上の逆潮流がある場合には、前記太陽光発電設備が異常でないと判定する、ことを特徴とする。 The invention of claim 2 is the abnormality detection system according to claim 1, wherein when the detection means has a reverse power flow of a predetermined value or more in the measured value of the customer to be monitored, the photovoltaic power generation is performed. It is characterized in that it is determined that the equipment is not abnormal.

請求項3の発明は、請求項1または2に記載の異常検出システムにおいて、前記検出手段は、前記参照需要家の計量値に所定値以上の逆潮流があって前記監視対象の需要家の計量値に逆潮流がない場合には、前記太陽光発電設備が異常であると判定する、ことを特徴とする。 The invention of claim 3 is the anomaly detection system according to claim 1 or 2, wherein the detection means measures the consumer to be monitored because the measurement value of the reference consumer has a reverse power flow of a predetermined value or more. When there is no reverse power flow in the value, it is determined that the photovoltaic power generation facility is abnormal.

請求項4の発明は、請求項1から3に記載の異常検出システムにおいて、前記検出手段は、前記監視対象の需要家の平常時の計量値と類似する計量値の需要家を前記参照需要家として選出する、ことを特徴とする。 The invention of claim 4 is the abnormality detection system according to any one of claims 1 to 3, wherein the detection means refers to a consumer having a measurement value similar to the normal measurement value of the customer to be monitored. It is characterized by being elected as.

請求項5の発明は、請求項1から4に記載の異常検出システムにおいて、前記検出手段で異常であると判定された場合に、前記監視対象の需要家に警報を出力する警報手段を備える、ことを特徴とする。 The invention of claim 5 includes an alarm means for outputting an alarm to a customer to be monitored when the detection means determines that the abnormality is abnormal in the abnormality detection system according to claims 1 to 4. It is characterized by that.

請求項6の発明は、太陽光発電設備が設けられた需要家側への配電系統からの順潮流と、前記需要家側から前記配電系統への逆潮流とを計量する計量ステップと、前記計量ステップで計量された前記各需要家の計量値を記憶する計量値記憶ステップと、前記計量値記憶ステップで記憶された各計量値に基づいて、監視対象の需要家と少なくとも天候が同じエリアに所在する需要家を参照需要家として選出し、現時点から所定期間遡った近期間における前記監視対象の需要家の計量値と前記参照需要家の計量値とに基づいて、前記監視対象の需要家の太陽光発電設備が異常であるか否かを判定する検出ステップと、を備えることを特徴とする太陽光発電設備の異常検出方法である。 The invention of claim 6 is a measurement step for measuring a forward power flow from a distribution system to a consumer side provided with a photovoltaic power generation facility and a reverse power flow from the customer side to the distribution system, and the measurement. Based on the measurement value storage step that stores the measurement value of each consumer measured in the step and each measurement value stored in the measurement value storage step, the customer is located in the same area as the monitored customer at least in the same weather. The solar power of the monitored consumer is selected as the reference consumer, and based on the measured value of the monitored consumer and the measured value of the reference consumer in the near period retroactively from the present time by a predetermined period. This is an abnormality detection method for photovoltaic power generation equipment, which comprises a detection step for determining whether or not the photovoltaic power generation equipment is abnormal.

請求項1および請求項6の発明によれば、監視対象の需要家(対象需要家)の計量値と参照需要家の計量値とに基づいて、対象需要家の太陽光発電設備が異常であるか否かが判定されるため、太陽光発電設備の停止などの異常を早期かつ適正に検出することが可能となる。例えば、近期間において、対象需要家と同じ天候の参照需要家の計量値内に逆潮流があるにもかかわらず、対象需要家の計量値内に逆潮流がない場合には、天候以外の要因によって対象需要家の太陽光発電設備が発電していない、つまり異常があると判定される。そして、このような判定を頻繁に行うことで、太陽光発電設備の停止などの異常を早期かつ適正に検出することが可能となる。また、需要家側には順潮流と逆潮流とを計量する計量器を配設するだけでよく、このような計量器は太陽光発電設備が設けられている需要家には配設されるべきものであるため、需要家への負担がなく、広く適用することができる。 According to the inventions of claims 1 and 6, the photovoltaic power generation facility of the target customer is abnormal based on the measured value of the monitored consumer (target customer) and the measured value of the reference customer. Since it is determined whether or not it is, it is possible to detect an abnormality such as a stoppage of the photovoltaic power generation facility early and appropriately. For example, in the near future, if there is reverse power flow within the measured value of the reference consumer with the same weather as the target customer, but there is no reverse power flow within the measured value of the target customer, a factor other than the weather It is determined that the target customer's photovoltaic power generation equipment is not generating power, that is, there is an abnormality. By making such a determination frequently, it is possible to detect an abnormality such as a stoppage of the photovoltaic power generation facility at an early stage and appropriately. In addition, it is only necessary to dispose a measuring instrument for measuring the forward power flow and the reverse power flow on the consumer side, and such a measuring instrument should be arranged for the customer who is provided with the photovoltaic power generation equipment. Since it is a thing, there is no burden on consumers and it can be widely applied.

請求項2の発明によれば、対象需要家の近期間の計量値内に、所定値以上の逆潮流がある場合には、太陽光発電設備が異常でないと判定される。例えば、平常通りの逆潮流があれば、太陽光発電設備が異常でないと判定されるため、異常でないことをより適正に検出することが可能となる。しかも、所定値を適正な値に設定することで、異常の有無をより適正、正確に検出することが可能となる。 According to the invention of claim 2, if there is a reverse power flow of a predetermined value or more within the measured value in the near term of the target consumer, it is determined that the photovoltaic power generation facility is not abnormal. For example, if there is normal reverse power flow, it is determined that the photovoltaic power generation facility is not abnormal, so that it is possible to more appropriately detect that it is not abnormal. Moreover, by setting a predetermined value to an appropriate value, it is possible to more appropriately and accurately detect the presence or absence of an abnormality.

請求項3の発明によれば、近期間において、参照需要家の計量値内に所定値以上の逆潮流があるにもかかわらず、対象需要家の計量値内に逆潮流がない場合には、太陽光発電設備が異常であると判定される。すなわち、参照需要家では適正に発電されて所定値以上の逆潮流があるにもかかわらず、同じ天候の対象需要家で逆潮流がない場合には、対象需要家の太陽光発電設備が適正に発電しておらず異常があると判定されるため、太陽光発電設備の異常を適正に検出することが可能となる。しかも、所定値を適正な値に設定することで、異常の有無をより適正、正確に検出することが可能となる。 According to the invention of claim 3, if there is a reverse power flow of a predetermined value or more in the measured value of the reference consumer in the near period, but there is no reverse power flow in the measured value of the target customer, It is determined that the photovoltaic power generation equipment is abnormal. In other words, if the reference consumer generates electricity properly and there is reverse power flow above the specified value, but there is no reverse power flow in the target customer with the same weather, the target customer's photovoltaic power generation equipment is appropriate. Since it is determined that there is an abnormality without generating power, it is possible to properly detect an abnormality in the photovoltaic power generation equipment. Moreover, by setting a predetermined value to an appropriate value, it is possible to more appropriately and accurately detect the presence or absence of an abnormality.

請求項4の発明によれば、平常時の計量値つまり電力需給状況(電力売買状況)が対象需要家と類似する需要家が参照需要家として選出されるため、より適正な参照需要家の計量値に基づいて、太陽光発電設備の異常をより適正に検出することが可能となる。例えば、逆潮流が発生する時間帯などが類似する参照需要家の計量値に基づいて、近期間において参照需要家で発生している逆潮流の時間帯で対象需要家でも逆潮流があるか否かを確認することで、太陽光発電設備の異常をより適正に検出することが可能となる。 According to the invention of claim 4, since a consumer whose normal measurement value, that is, a customer whose power supply / demand situation (electric power trading situation) is similar to that of the target customer is selected as a reference consumer, a more appropriate measurement of the reference consumer is made. Based on the value, it becomes possible to more appropriately detect an abnormality in the photovoltaic power generation facility. For example, based on the measured values of reference consumers who have similar times of reverse power flow, whether or not the target customers also have reverse power flow during the time of reverse power flow occurring at the reference customers in the near future. By confirming this, it becomes possible to more appropriately detect an abnormality in the photovoltaic power generation equipment.

請求項5の発明によれば、太陽光発電設備が異常であると判定されると、対象需要家に警報が出力されるため、対象需要家において迅速かつ適正な措置を講じることができ、長期間売電できなくなる状況を回避することが可能となる。 According to the invention of claim 5, when it is determined that the photovoltaic power generation facility is abnormal, an alarm is output to the target consumer, so that the target customer can take prompt and appropriate measures. It is possible to avoid the situation where power cannot be sold for a period of time.

この発明の実施の形態に係る太陽光発電設備の異常検出システムを示す概略構成図である。It is a schematic block diagram which shows the abnormality detection system of the photovoltaic power generation facility which concerns on embodiment of this invention. 図1の異常検出システムの監視サーバを示す概略構成ブロック図である。It is a schematic block diagram which shows the monitoring server of the abnormality detection system of FIG. 図2の監視サーバの需要家データベースのデータ構成を示す図である。It is a figure which shows the data structure of the consumer database of the monitoring server of FIG. 図2の監視サーバの計量値データベースに記憶される計量値例を示し、(a)は、太陽光発電設備に異常がない場合の計量値、(b)は、太陽光発電設備に異常がある場合の計量値を示す。An example of the measured value stored in the measured value database of the monitoring server of FIG. 2 is shown. (A) is a measured value when there is no abnormality in the photovoltaic power generation equipment, and (b) is an abnormality in the photovoltaic power generation equipment. The measured value of the case is shown. 図2の監視サーバの検出タスクを示すフローチャートである。It is a flowchart which shows the detection task of the monitoring server of FIG. 図1の異常検出システムの作用、動作を示すタイミングチャートである。It is a timing chart which shows the operation and operation of the abnormality detection system of FIG.

以下、この発明を図示の実施の形態に基づいて説明する。 Hereinafter, the present invention will be described based on the illustrated embodiment.

図1は、この発明の実施の形態に係る太陽光発電設備の異常検出システム(以下、単に「異常検出システム」という)1を示す概略構成図である。この異常検出システム1は、太陽光発電設備2の異常を検出するシステムであり、太陽光発電設備2が設けられた各需要家(需要家宅)Mに配設されたスマートメータ(計量器)3と、電力事業者の監視サーバ4と、を備える。ここで、この実施の形態では、異常検出システム1による検出サービスは、申し込みがあった需要家Mに対してのみ適用するものとする。また、図中符号102は、電柱101に架設された配電線(配電系統)である。 FIG. 1 is a schematic configuration diagram showing an abnormality detection system (hereinafter, simply referred to as “abnormality detection system”) 1 of a photovoltaic power generation facility according to an embodiment of the present invention. The abnormality detection system 1 is a system for detecting an abnormality in the photovoltaic power generation facility 2, and is a smart meter (meter) 3 arranged in each customer (customer's house) M provided with the photovoltaic power generation facility 2. And a monitoring server 4 of the electric power company. Here, in this embodiment, the detection service by the abnormality detection system 1 is applied only to the customer M who has applied. Further, reference numeral 102 in the figure is a distribution line (distribution system) erected on the utility pole 101.

スマートメータ3は、配電線102から需要家M側への順潮流(消費電力量)と、需要家M側つまり太陽光発電設備2から配電線102への逆潮流(販売電力量)とを計量する計量器であり、通信機能を備える。すなわち、所定時間毎、例えば、30分毎の順潮流および逆潮流の電力量を計量し、その計量値をリアルタイムに監視サーバ4に送信する。ここで、監視サーバ4と通信するための通信方式は、配電線102による電力線搬送通信(PLC)などどのようなものでもよい。また、需要家Mの携帯電話などの通信端末と監視サーバ4とは、ネットワークNWを介して通信自在となっている。 The smart meter 3 measures the forward power flow (power consumption) from the distribution line 102 to the consumer M side and the reverse power flow (sales power consumption) from the customer M side, that is, the photovoltaic power generation facility 2 to the distribution line 102. It is a measuring instrument and has a communication function. That is, the electric energy of the forward power flow and the reverse power flow is measured every predetermined time, for example, every 30 minutes, and the measured value is transmitted to the monitoring server 4 in real time. Here, the communication method for communicating with the monitoring server 4 may be any communication method such as power line carrier communication (PLC) by the distribution line 102. Further, the communication terminal such as the mobile phone of the consumer M and the monitoring server 4 can freely communicate with each other via the network NW.

監視サーバ4は、図2に示すように、主として、需要家データベース41と、計量値データベース(計量値記憶手段)42と、通信部43と、検出タスク(検出手段)44と、警報タスク(警報手段)45と、これらを制御などする中央処理部46と、を備える。ここで、これらの一部を他のサーバやコンピュータなどに備え、相互に連携するようにしてもよい。 As shown in FIG. 2, the monitoring server 4 mainly includes a consumer database 41, a measurement value database (measurement value storage means) 42, a communication unit 43, a detection task (detection means) 44, and an alarm task (alarm). Means) 45 and a central processing unit 46 for controlling them. Here, some of them may be provided in other servers, computers, or the like so as to cooperate with each other.

需要家データベース41は、各需要家Mに関する情報を記憶するデータベースであり、図3に示すように、契約番号411ごとに、需要家名412、計器番号413、太陽光414、所在地415、連絡先416、サービス417、計量値418、その他419が記憶されている。契約番号411には、需要家Mと電力事業者との契約を識別する識別情報が記憶され、需要家名412には、需要家Mを識別する氏名などの識別情報が記憶されている。計器番号413には、この需要家Mに配設されているスマートメータ3の識別情報が記憶され、太陽光414には、この需要家Mに太陽光発電設備2が設置されているか否かと、設置されている場合の太陽光発電設備2に関する情報(例えば、発電容量)が記憶されている。 The consumer database 41 is a database that stores information about each customer M, and as shown in FIG. 3, for each contract number 411, the customer name 412, the instrument number 413, the sunlight 414, the location 415, and the contact information. 416, service 417, weighing value 418, and other 419 are stored. The contract number 411 stores identification information for identifying the contract between the consumer M and the electric power company, and the customer name 412 stores identification information such as a name for identifying the customer M. The instrument number 413 stores the identification information of the smart meter 3 arranged in the customer M, and the solar power 414 indicates whether or not the photovoltaic power generation facility 2 is installed in the consumer M. Information (for example, power generation capacity) regarding the photovoltaic power generation facility 2 when it is installed is stored.

所在地415には、この需要家Mの緯度、経度などの位置情報が記憶され、連絡先416には、この需要家Mのメールアドレスや電話番号などの連絡先情報が記憶されている。サービス417には、この需要家Mが検出サービスの適用対象であるか否かが記憶され、計量値418には、異常検出システム1によって、この需要家Mの太陽光発電設備2の異常が過去に検出された場合の検出日時が記憶されている。 The location 415 stores location information such as the latitude and longitude of the customer M, and the contact 416 stores contact information such as the customer M's email address and telephone number. The service 417 stores whether or not the consumer M is the target of the detection service, and the measurement value 418 indicates that the abnormality of the solar power generation facility 2 of the customer M is past by the abnormality detection system 1. The date and time of detection when it is detected in is stored.

計量値データベース42は、各スマートメータ3による計量値を記憶するデータベースであり、スマートメータ3の識別情報ごとに、図4に示すような30分毎の順潮流または逆潮流の電力量が経時的に記憶されている。この図において、実線で示すプラスの電力量は順潮流値で、破線で示すマイナスの電力量は逆潮流値であり、横軸の1目盛は1日を示す。 The measurement value database 42 is a database that stores the measurement values by each smart meter 3, and the electric energy of the forward power flow or the reverse power flow every 30 minutes as shown in FIG. 4 is measured over time for each identification information of the smart meter 3. It is remembered in. In this figure, the positive electric energy shown by the solid line is the forward power flow value, the negative electric energy shown by the broken line is the reverse power flow value, and one scale on the horizontal axis indicates one day.

通信部43は、各スマートメータ3や各需要家Mの通信端末などと通信するためのインターフェイスである。 The communication unit 43 is an interface for communicating with each smart meter 3 and a communication terminal of each consumer M.

検出タスク44は、計量値データベース42の各計量値に基づいて、監視対象の需要家M(以下、「対象需要家M1」という)と少なくとも天候が同じエリアに所在する(対象需要家M1と近隣の)需要家Mを参照需要家M2として選出し、現時点から所定期間遡った近期間における対象需要家M1の計量値と参照需要家M2の計量値とに基づいて、対象需要家M1の太陽光発電設備2が異常であるか否かを判定するタスク・プログラムである。すなわち、この実施の形態では、1週間ごとに定期的に起動され、現時点から所定期間遡った近期間、つまり直近1週間において、対象需要家M1の計量値と参照需要家M2の計量値とを比較することで、対象需要家M1の太陽光発電設備2が異常であるか否かを判定するものである。ここで、1週間ごとではなく、1日ごとや数日ごとに起動し、過去1日間や数日間の計量値に基づいて判定してもよい。 The detection task 44 is located in an area where the weather is at least the same as that of the monitored customer M (hereinafter referred to as “target customer M1”) based on each measurement value in the measurement value database 42 (neighboring to the target customer M1). ) Consumer M is selected as the reference consumer M2, and the solar power of the target consumer M1 is based on the measured value of the target consumer M1 and the measured value of the reference consumer M2 in the near period retroactively from the present time. This is a task program for determining whether or not the power generation facility 2 is abnormal. That is, in this embodiment, the measured value of the target consumer M1 and the measured value of the reference consumer M2 are set in the near period, that is, the latest one week, which is started periodically every week and goes back a predetermined period from the present time. By comparing, it is determined whether or not the photovoltaic power generation facility 2 of the target consumer M1 is abnormal. Here, it may be started every day or several days instead of every week, and the determination may be made based on the measured values of the past one day or several days.

具体的には、図5に示すように、まず、検出サービスの適用対象である最初の対象需要家M1の計量値を計量値データベース42から取得する(ステップS1)。すなわち、需要家データベース41のサービス417に検出サービスの適用対象であることが記憶されている、最初の需要家Mのスマートメータ3の識別情報を計器番号413から取得し、この識別情報の計量値を計量値データベース42から取得する。 Specifically, as shown in FIG. 5, first, the weighing value of the first target consumer M1 to which the detection service is applied is acquired from the weighing value database 42 (step S1). That is, the identification information of the smart meter 3 of the first customer M, which is stored in the service 417 of the consumer database 41 to be applied to the detection service, is acquired from the instrument number 413, and the measurement value of this identification information is obtained. Is obtained from the weighing value database 42.

次に、取得した計量値の過去1週間において、晴判定値(所定値)C以上の逆潮流があるか否かを判定する(ステップS2)。ここで、晴判定値Cとは、天候が晴れていて太陽光発電設備2が正常であれば、計量されると想定される逆潮流値であり、太陽光発電設備2の発電容量などに依存し、例えば、過去の季節ごとの晴れ時の平均的な逆潮流値に基づいて設定される。そして、図4(a)の第3のタイミングT3のように、晴判定値C以上の逆潮流がある場合(ステップS2で「Y」の場合)には、太陽光発電設備2が異常ではなく正常であると判定する(ステップS3)。 Next, it is determined whether or not there is reverse power flow of the fine weather determination value (predetermined value) C or more in the past week of the acquired measured value (step S2). Here, the fine weather determination value C is a reverse power flow value that is assumed to be measured if the weather is fine and the photovoltaic power generation facility 2 is normal, and depends on the power generation capacity of the photovoltaic power generation facility 2 and the like. Then, for example, it is set based on the average reverse power flow value in the past seasons during sunny days. Then, when there is a reverse power flow of the clear judgment value C or more (when “Y” in step S2) as in the third timing T3 of FIG. 4A, the photovoltaic power generation facility 2 is not abnormal. It is determined that it is normal (step S3).

一方、晴判定値C以上の逆潮流がない場合(ステップS2で「N」の場合)には、参照需要家M2を選出する(ステップS4)。参照需要家M2とは、対象需要家M1の電力需給状況(電力売買状況)と同等の電力需給状況で、対象需要家M1の太陽光発電設備2と同等の動作をすると想定される太陽光発電設備2が配設された需要家Mであり、この実施の形態では、天候が同じエリアに所在する需要家Mであり、かつ、対象需要家M1の平常時の計量値と類似する計量値の需要家Mを選出する。 On the other hand, when there is no reverse power flow of the clear judgment value C or more (when “N” in step S2), the reference consumer M2 is selected (step S4). The reference consumer M2 is a photovoltaic power generation system that is expected to operate in the same manner as the photovoltaic power generation facility 2 of the target consumer M1 in the same power supply and demand situation (electric power trading status) as the target consumer M1. It is a consumer M in which the equipment 2 is arranged, and in this embodiment, the customer M is located in the same area with the same weather, and the measured value is similar to the measured value of the target customer M1 in normal times. Select consumer M.

具体的には、対象需要家M1の所在地から所定の範囲内に所在して太陽光発電設備2が配設された需要家Mのなかから、過去の平常時(太陽光発電設備2の異常と判定された期間や停電時などを除く期間)において、逆潮流の発生タイミングなどの潮流傾向が同等の需要家Mを選出する。例えば、図4(b)を対象需要家M1の計量値とした場合、潮流傾向が同等である図4(a)を計量値とする需要家Mを参照需要家M2として選出する。さらに、太陽光発電設備2の発電容量や経年数(劣化度)などが近似する需要家Mを、参照需要家M2として選出してもよい。 Specifically, among the customers M who are located within a predetermined range from the location of the target customer M1 and in which the photovoltaic power generation facility 2 is arranged, the past normal times (abnormality of the photovoltaic power generation facility 2) A customer M having the same power flow tendency such as the timing of reverse power flow generation is selected during the determined period and the period excluding the time of power failure. For example, when FIG. 4 (b) is the measured value of the target consumer M1, the customer M whose measured value is FIG. 4 (a) having the same tidal current tendency is selected as the reference consumer M2. Further, a consumer M whose power generation capacity and aging (deterioration degree) of the photovoltaic power generation facility 2 are similar may be selected as a reference consumer M2.

このような参照需要家M2の選出は、検出タスク44の起動時ごとに行ってもよいが、全対象需要家M1に対する参照需要家M2の選出を予め行って、需要家データベース41に記憶しておいてもよい。そして、このようにして選出した参照需要家M2の直近1週間の計量値を計量値データベース42から取得する(ステップS5)。 Such selection of the reference consumer M2 may be performed each time the detection task 44 is started, but the reference consumer M2 is selected in advance for all target consumers M1 and stored in the customer database 41. You may leave it. Then, the measured value of the reference consumer M2 selected in this way for the most recent week is acquired from the measured value database 42 (step S5).

次に、対象需要家M1と参照需要家M2の直近1週間の計量値が、第1の条件を満たすか否かを判定する(ステップS6)。ここで、第1の条件とは、参照需要家M2の計量値に晴判定値(所定値)C以上の逆潮流があって対象需要家M1の計量値に逆潮流がない、という条件である。 Next, it is determined whether or not the measured values of the target consumer M1 and the reference consumer M2 in the last week satisfy the first condition (step S6). Here, the first condition is a condition that the measured value of the reference consumer M2 has a reverse power flow of a clear judgment value (predetermined value) C or more and the measured value of the target consumer M1 has no reverse power flow. ..

すなわち、参照需要家M2では適正に発電されて晴判定値C以上の逆潮流があるにもかかわらず、同じ天候で潮流傾向が同等の対象需要家M1で逆潮流がない場合には、対象需要家M1の太陽光発電設備2が適正に発電しておらず異常があると判定する。ここで、参照需要家M2の晴判定値Cは、上記の対象需要家M1の晴判定値Cと同様に設定されるが、対象需要家M1の晴判定値Cと同値である必要はない。 That is, if the reference consumer M2 generates electricity properly and there is a reverse power flow of the clear judgment value C or more, but the target customer M1 has the same weather and the same tidal current tendency and there is no reverse power flow, the target demand. It is determined that the photovoltaic power generation facility 2 of the house M1 is not generating power properly and there is an abnormality. Here, the fine weather determination value C of the reference consumer M2 is set in the same manner as the fine weather judgment value C of the target consumer M1 described above, but it does not have to be the same value as the fine weather judgment value C of the target consumer M1.

例えば、参照需要家M2の計量値において、図4(a)の第3のタイミングT3のような晴判定値C以上の逆潮流があるにもかかわらず、対象需要家M1の計量値において、図4(b)に示すように、同じ第3のタイミングT3で逆潮流がない場合には、対象需要家M1の太陽光発電設備2が異常であると推定される。そして、この条件を満たす場合(ステップS6で「Y」の場合)には、太陽光発電設備2が異常であると判定し(ステップS7)、この対象需要家M1の連絡先情報を連絡先416から取得してメモリに記憶する。また、この実施の形態では、第1の条件を満たす場合には、太陽光発電設備2が故障停止しており重大異常であるとしてメモリに記憶する。さらに、計量値418に検出日時つまり検出タスク44の起動日時を記憶する。 For example, in the weighed value of the reference consumer M2, even though there is reverse power flow of the clear judgment value C or more as in the third timing T3 of FIG. As shown in 4 (b), if there is no reverse power flow at the same third timing T3, it is presumed that the photovoltaic power generation facility 2 of the target customer M1 is abnormal. Then, when this condition is satisfied (in the case of "Y" in step S6), it is determined that the photovoltaic power generation facility 2 is abnormal (step S7), and the contact information of the target customer M1 is used as the contact information 416. And store it in memory. Further, in this embodiment, when the first condition is satisfied, the photovoltaic power generation facility 2 is stored in the memory as a serious abnormality due to a failure. Further, the detection date and time, that is, the activation date and time of the detection task 44 is stored in the measurement value 418.

一方、第1の条件を満たさない場合(ステップS6で「N」の場合)には、対象需要家M1と参照需要家M2の直近1週間の計量値が、第2の条件を満たすか否かを判定する(ステップS8)。ここで、第2の条件とは、太陽光発電設備2が故障停止していないが、太陽光パネルに付着物があるなどの何らかの異常があると推定される場合の条件であり、例えば、次のような条件を含む。 On the other hand, when the first condition is not satisfied (in the case of "N" in step S6), whether or not the measured values of the target consumer M1 and the reference consumer M2 in the last week satisfy the second condition. Is determined (step S8). Here, the second condition is a condition in which the photovoltaic power generation facility 2 has not stopped due to failure, but it is presumed that there is some abnormality such as deposits on the solar panel. Including conditions such as.

第1に、対象需要家M1の計量値に逆潮流があるが、参照需要家M2の計量値の同じタイミングでの逆潮流に比べて平常時よりも小さい、という条件である。第2に、平常時には対象需要家M1と参照需要家M2の逆潮流の発生タイミングが同じであり、図4(a)のタイミングT1、T2のように、参照需要家M2の計量値に晴判定値C未満の逆潮流があるにもかかわらず、図4(b)のタイミングT1、T2のように、対象需要家M1の計量値に逆潮流がない、という条件である。 First, there is reverse power flow in the measured value of the target consumer M1, but it is smaller than normal time compared to the reverse power flow of the measured value of the reference consumer M2 at the same timing. Secondly, in normal times, the timing of reverse power flow generation of the target consumer M1 and the reference consumer M2 is the same, and as shown in the timings T1 and T2 of FIG. It is a condition that there is no reverse power flow in the measured value of the target consumer M1 as shown in timings T1 and T2 in FIG. 4B even though there is reverse power flow less than the value C.

そして、第2の条件を満たす場合(ステップS8で「Y」の場合)には、太陽光発電設備2が異常であると判定し(ステップS7)、この対象需要家M1の連絡先情報を連絡先416から取得してメモリに記憶する。また、この実施の形態では、第2の条件を満たす場合には、太陽光発電設備2が故障停止していないが軽異常であるとしてメモリに記憶する。さらに、計量値418に検出日時つまり検出タスク44の起動日時を記憶する。 Then, when the second condition is satisfied (in the case of "Y" in step S8), it is determined that the photovoltaic power generation facility 2 is abnormal (step S7), and the contact information of the target customer M1 is communicated. It is acquired from the previous 416 and stored in the memory. Further, in this embodiment, when the second condition is satisfied, the photovoltaic power generation facility 2 is stored in the memory as a minor abnormality although the failure has not stopped. Further, the detection date and time, that is, the activation date and time of the detection task 44 is stored in the measurement value 418.

一方、第2の条件を満たさない場合(ステップS8で「N」の場合)には、太陽光発電設備2が異常ではなく正常であると判定する(ステップS3)。そして、検出サービスの適用対象である次の対象需要家M1の計量値を計量値データベース42から取得し(ステップS9)、ステップS2に戻って同様の処理を繰り返す。このように、この実施の形態では、定期的に全対象需要家M1に対して異常の有無を検出しているが、任意の日時(例えば、停電復旧後)に検出したり、任意の対象需要家M1に対してのみ検出してもよい。 On the other hand, when the second condition is not satisfied (in the case of "N" in step S8), it is determined that the photovoltaic power generation facility 2 is normal rather than abnormal (step S3). Then, the measurement value of the next target consumer M1 to which the detection service is applied is acquired from the measurement value database 42 (step S9), and the process returns to step S2 to repeat the same process. As described above, in this embodiment, the presence or absence of an abnormality is periodically detected for all the target consumers M1, but it can be detected at an arbitrary date and time (for example, after the power failure is restored) or any target demand. It may be detected only for the house M1.

警報タスク45は、検出タスク44で異常であると判定された対象需要家M1に警報を出力するタスク・プログラムである。すなわち、検出タスク44の処理終了後に起動され、異常検出されてメモリに記憶された全対象需要家M1の連絡先情報に対して、太陽光発電設備2が異常であることを示す警報情報を、通信部43を介して電子メールや電話などで出力するものである。この際、警報情報には、重大異常であるか軽異常であるかの情報を含む。 The alarm task 45 is a task program that outputs an alarm to the target consumer M1 determined to be abnormal in the detection task 44. That is, the alarm information indicating that the photovoltaic power generation facility 2 is abnormal is provided to the contact information of all the target consumers M1 which is started after the processing of the detection task 44 is completed and is detected as abnormal and stored in the memory. It is output by e-mail, telephone, or the like via the communication unit 43. At this time, the alarm information includes information on whether it is a serious abnormality or a minor abnormality.

次に、このような構成の異常検出システム1の作用および、異常検出システム1による太陽光発電設備の異常検出方法などについて説明する。 Next, the operation of the abnormality detection system 1 having such a configuration, the abnormality detection method of the photovoltaic power generation facility by the abnormality detection system 1, and the like will be described.

まず、図6に示すように、各スマートメータ3で30分毎の順潮流と逆潮流とが計量され(計量ステップ)、その計量値が監視サーバ4に送信されると(ステップS11)と、この計量値が計量値データベース42に記憶される(計量値記憶ステップ、ステップS12)。次に、所定の時期になると検出タスク43が起動され(ステップS13)、上記のようにして、各対象需要家M1の太陽光発電設備2が異常であるか否かが判定される(検出ステップ)。そして、異常であると判定された対象需要家M1に対して、監視サーバ4から警報情報が出力される(警報ステップ、ステップS14)ものである。 First, as shown in FIG. 6, each smart meter 3 measures the forward power flow and the reverse power flow every 30 minutes (measurement step), and when the measured value is transmitted to the monitoring server 4 (step S11), This measured value is stored in the measured value database 42 (measured value storage step, step S12). Next, at a predetermined time, the detection task 43 is activated (step S13), and as described above, it is determined whether or not the photovoltaic power generation facility 2 of each target consumer M1 is abnormal (detection step). ). Then, the alarm information is output from the monitoring server 4 to the target consumer M1 determined to be abnormal (alarm step, step S14).

このように、この異常検出システム1および異常検出方法によれば、対象需要家M1の計量値と参照需要家M2の計量値とに基づいて、対象需要家M1の太陽光発電設備2が異常であるか否かが判定されるため、太陽光発電設備2の停止などの異常を早期かつ適正に検出することが可能となる。例えば、直近1週間において、対象需要家M1と同じ天候の参照需要家M2の計量値内に逆潮流があるにもかかわらず、対象需要家M1の計量値内に同じタイミングで逆潮流がない場合には、天候以外の要因によって対象需要家M1の太陽光発電設備2が発電していない、つまり異常があると判定される。そして、このような判定を頻繁、定期的に行うことで、太陽光発電設備2の停止などの異常を早期かつ適正に検出することが可能となる。また、需要家M側には順潮流と逆潮流とを計量するスマートメータ3を配設するだけでよく、このようなスマートメータ3は太陽光発電設備2が設けられている需要家Mには配設されるべきもの(既設のもの)であるため、需要家Mへの負担がなく、広く適用することができる。 As described above, according to the abnormality detection system 1 and the abnormality detection method, the photovoltaic power generation facility 2 of the target consumer M1 is abnormal based on the measured value of the target consumer M1 and the measured value of the reference consumer M2. Since it is determined whether or not there is an abnormality, it is possible to detect an abnormality such as a stoppage of the photovoltaic power generation facility 2 early and appropriately. For example, in the last week, when there is reverse power flow in the measured value of the reference consumer M2 having the same weather as the target customer M1, but there is no reverse power flow in the measured value of the target customer M1 at the same timing. It is determined that the photovoltaic power generation facility 2 of the target consumer M1 is not generating power due to factors other than the weather, that is, there is an abnormality. Then, by making such a determination frequently and regularly, it becomes possible to detect an abnormality such as a stoppage of the photovoltaic power generation facility 2 early and appropriately. Further, it is only necessary to dispose a smart meter 3 for measuring forward power flow and reverse power flow on the customer M side, and such a smart meter 3 is provided to the customer M provided with the photovoltaic power generation facility 2. Since it should be arranged (existing one), there is no burden on the consumer M and it can be widely applied.

また、対象需要家M1の直近1週間の計量値内に、晴判定値C以上の逆潮流がある場合には、太陽光発電設備2が異常でないと判定される。例えば、上記のように、平常通りの逆潮流があれば、太陽光発電設備2が異常でないと判定されるため、異常でないことをより適正に検出することが可能となる。しかも、晴判定値Cを適正な値に設定することで、異常の有無をより適正、正確に検出することが可能となる。 Further, if there is a reverse power flow of the fine weather determination value C or more within the measured value of the target consumer M1 in the last week, it is determined that the photovoltaic power generation facility 2 is not abnormal. For example, as described above, if there is a normal reverse power flow, it is determined that the photovoltaic power generation facility 2 is not abnormal, so that it is possible to more appropriately detect that it is not abnormal. Moreover, by setting the fine weather determination value C to an appropriate value, it is possible to more appropriately and accurately detect the presence or absence of an abnormality.

さらに、直近1週間において、参照需要家M2の計量値内に晴判定値C以上の逆潮流があるにもかかわらず、対象需要家M1の計量値内に逆潮流がない場合には、太陽光発電設備2が異常であると判定される。すなわち、参照需要家M2では適正に発電されて晴判定値C以上の逆潮流があるにもかかわらず、同じ天候の対象需要家M1で逆潮流がない場合には、対象需要家M1の太陽光発電設備2が適正に発電しておらず異常があると判定されるため、太陽光発電設備2の異常を適正に検出することが可能となる。しかも、晴判定値Cを適正な値に設定することで、異常の有無をより適正、正確に検出することが可能となる。 Furthermore, in the last week, if there is a reverse power flow within the measured value of the reference consumer M2 but there is no reverse power flow within the measured value of the target consumer M1, the sunlight It is determined that the power generation facility 2 is abnormal. That is, if the reference consumer M2 generates electricity properly and there is a reverse power flow of the clear judgment value C or more, but there is no reverse power flow in the target consumer M1 with the same weather, the solar power of the target customer M1 Since it is determined that the power generation facility 2 is not generating power properly and there is an abnormality, it is possible to properly detect the abnormality of the photovoltaic power generation facility 2. Moreover, by setting the fine weather determination value C to an appropriate value, it is possible to more appropriately and accurately detect the presence or absence of an abnormality.

また、平常時の計量値つまり電力需給状況(電力売買状況)が対象需要家M1と類似する需要家Mが参照需要家M2として選出されるため、より適正な参照需要家M2の計量値に基づいて、太陽光発電設備2の異常をより適正に検出することが可能となる。例えば、上記のように、逆潮流が発生する時間帯などが類似する参照需要家M2の計量値に基づいて、直近1週間において参照需要家M2で発生している逆潮流の時間帯(日時)で対象需要家M1でも逆潮流があるか否かを確認することで、太陽光発電設備2の異常をより適正に検出することが可能となる。 In addition, since the consumer M whose normal measurement value, that is, the power supply / demand status (electric power trading status) is similar to the target consumer M1, is selected as the reference consumer M2, it is based on the more appropriate measurement value of the reference consumer M2. Therefore, it becomes possible to detect the abnormality of the photovoltaic power generation facility 2 more appropriately. For example, as described above, the time zone (date and time) of the reverse power flow occurring in the reference consumer M2 in the last week based on the measured value of the reference consumer M2 having a similar time zone in which the reverse power flow occurs. By confirming whether or not the target consumer M1 also has reverse power flow, it is possible to more appropriately detect the abnormality of the photovoltaic power generation facility 2.

一方、太陽光発電設備2が異常であると判定されると、対象需要家M1に警報が出力されるため、対象需要家M1において迅速かつ適正な措置を講じることができ、長期間売電できなくなる状況を回避することが可能となる。しかも、故障停止などの重大異常であるか軽異常であるかが対象需要家M1に出力されるため、異常の程度に応じた迅速かつ適正な措置を講じることが可能となる。 On the other hand, if it is determined that the photovoltaic power generation facility 2 is abnormal, an alarm is output to the target consumer M1, so that the target consumer M1 can take prompt and appropriate measures and can sell power for a long period of time. It is possible to avoid the situation where it disappears. Moreover, since it is output to the target consumer M1 whether it is a serious abnormality such as a failure stop or a minor abnormality, it is possible to take prompt and appropriate measures according to the degree of the abnormality.

以上、この発明の実施の形態について説明したが、具体的な構成は、上記の実施の形態に限られるものではなく、この発明の要旨を逸脱しない範囲の設計の変更等があっても、この発明に含まれる。例えば、上記の実施の形態では、対象需要家M1に対して1つの参照需要家M2を選出しているが、複数の参照需要家M2を選出し、複数の参照需要家M2の計量値に基づいて(例えば、平均値を使用したり、順次比較したりして)、対象需要家M1の太陽光発電設備2の異常の有無を判定してもよい。また、検出タスク44の第1の条件や第2の条件として、上記以外の条件を設けてもよい。 Although the embodiment of the present invention has been described above, the specific configuration is not limited to the above-described embodiment, and even if there is a design change or the like within a range that does not deviate from the gist of the present invention. Included in the invention. For example, in the above embodiment, one reference consumer M2 is selected for the target consumer M1, but a plurality of reference consumers M2 are selected based on the measured values of the plurality of reference consumers M2. (For example, the average value may be used or sequentially compared) to determine whether or not there is an abnormality in the photovoltaic power generation facility 2 of the target consumer M1. Further, conditions other than the above may be provided as the first condition and the second condition of the detection task 44.

1 太陽光発電設備の異常検出システム
2 太陽光発電設備
3 スマートメータ(計量器)
4 監視サーバ
41 需要家データベース
42 計量値データベース(計量値記憶手段)
43 通信部
44 検出タスク(検出手段)
45 警報タスク(警報手段)
102 配電線(配電系統)
M 需要家
M1 対象需要家
M2 参照需要家
C 晴判定値(所定値)
1 Abnormality detection system for photovoltaic power generation equipment 2 Solar power generation equipment 3 Smart meter (measuring instrument)
4 Monitoring server 41 Consumer database 42 Weighed value database (Weighed value storage means)
43 Communication unit 44 Detection task (detection means)
45 Alarm task (alarm means)
102 Distribution line (distribution system)
M Demander M1 Target Demander M2 Reference Demander C Fine Judgment Value (Predetermined Value)

Claims (6)

太陽光発電設備が設けられた各需要家に配設され、配電系統から前記需要家側への順潮流と、前記需要家側から前記配電系統への逆潮流とを計量する計量器と、
前記各計量器による計量値を記憶する計量値記憶手段と、
前記各計量値に基づいて、監視対象の需要家と少なくとも天候が同じエリアに所在する需要家を参照需要家として選出し、現時点から所定期間遡った近期間における前記監視対象の需要家の計量値と前記参照需要家の計量値とに基づいて、前記監視対象の需要家の太陽光発電設備が異常であるか否かを判定する検出手段と、
を備えることを特徴とする太陽光発電設備の異常検出システム。
A measuring instrument that is arranged in each customer equipped with a photovoltaic power generation facility and measures the forward power flow from the distribution system to the customer side and the reverse power flow from the customer side to the power distribution system.
A measuring value storage means for storing the measured value by each measuring instrument and
Based on each of the measured values, a customer located in an area where the weather is at least the same as that of the monitored customer is selected as a reference customer, and the measured value of the monitored customer in the near period retroactively from the present time by a predetermined period. And the detection means for determining whether or not the photovoltaic power generation equipment of the monitored consumer is abnormal based on the measured value of the reference consumer and
An abnormality detection system for photovoltaic power generation equipment, which is characterized by being equipped with.
前記検出手段は、前記監視対象の需要家の計量値において、所定値以上の逆潮流がある場合には、前記太陽光発電設備が異常でないと判定する、
ことを特徴とする請求項1に記載の太陽光発電設備の異常検出システム。
The detection means determines that the photovoltaic power generation facility is not abnormal when there is a reverse power flow of a predetermined value or more in the measured value of the customer to be monitored.
The abnormality detection system for photovoltaic power generation equipment according to claim 1.
前記検出手段は、前記参照需要家の計量値に所定値以上の逆潮流があって前記監視対象の需要家の計量値に逆潮流がない場合には、前記太陽光発電設備が異常であると判定する、
ことを特徴とする請求項1または2のいずれか1項に記載の太陽光発電設備の異常検出システム。
The detection means determines that the photovoltaic power generation facility is abnormal when the measured value of the reference consumer has a reverse power flow equal to or higher than a predetermined value and the measured value of the monitored customer does not have a reverse power flow. judge,
The abnormality detection system for a photovoltaic power generation facility according to any one of claims 1 or 2.
前記検出手段は、前記監視対象の需要家の平常時の計量値と類似する計量値の需要家を前記参照需要家として選出する、
ことを特徴とする請求項1から3のいずれか1項に記載の太陽光発電設備の異常検出システム。
The detection means selects a consumer having a metric value similar to the normal metric value of the monitored consumer as the reference consumer.
The abnormality detection system for a photovoltaic power generation facility according to any one of claims 1 to 3, characterized in that.
前記検出手段で異常であると判定された場合に、前記監視対象の需要家に警報を出力する警報手段を備える、
ことを特徴とする請求項1から4のいずれか1項に記載の太陽光発電設備の異常検出システム。
An alarm means for outputting an alarm to the monitored consumer when the detection means determines that the abnormality is abnormal.
The abnormality detection system for a photovoltaic power generation facility according to any one of claims 1 to 4, characterized in that.
太陽光発電設備が設けられた需要家側への配電系統からの順潮流と、前記需要家側から前記配電系統への逆潮流とを計量する計量ステップと、
前記計量ステップで計量された前記各需要家の計量値を記憶する計量値記憶ステップと、
前記計量値記憶ステップで記憶された各計量値に基づいて、監視対象の需要家と少なくとも天候が同じエリアに所在する需要家を参照需要家として選出し、現時点から所定期間遡った近期間における前記監視対象の需要家の計量値と前記参照需要家の計量値とに基づいて、前記監視対象の需要家の太陽光発電設備が異常であるか否かを判定する検出ステップと、
を備えることを特徴とする太陽光発電設備の異常検出方法。
A weighing step for measuring the forward power flow from the distribution system to the customer side where the photovoltaic power generation facility is installed and the reverse power flow from the customer side to the power distribution system.
A measurement value storage step for storing the measurement value of each consumer measured in the measurement step, and a measurement value storage step.
Based on each metric value stored in the metric value storage step, a consumer who is located in an area where the weather is at least the same as that of the monitored consumer is selected as a reference consumer, and the said A detection step for determining whether or not the photovoltaic power generation facility of the monitored consumer is abnormal based on the measured value of the monitored consumer and the measured value of the reference consumer, and
A method for detecting an abnormality in a photovoltaic power generation facility, which comprises the above.
JP2019103789A 2019-06-03 2019-06-03 Abnormality detection system and abnormality detection method of photovoltaic power generation facility Pending JP2020198711A (en)

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