JP2018198510A - Electronic power measuring unit - Google Patents
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- JP2018198510A JP2018198510A JP2017102917A JP2017102917A JP2018198510A JP 2018198510 A JP2018198510 A JP 2018198510A JP 2017102917 A JP2017102917 A JP 2017102917A JP 2017102917 A JP2017102917 A JP 2017102917A JP 2018198510 A JP2018198510 A JP 2018198510A
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/70—Smart grids as climate change mitigation technology in the energy generation sector
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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- Y—GENERAL 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS 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
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/12—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation
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- Y—GENERAL 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS 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
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/14—Energy storage units
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Abstract
【課題】 特定の種類の電力生成設備とそれ以外の電力生成設備の双方を備えても、特定の種類とそれ以外の種類の電力による売電電力を簡易な構成で個別に計測できる電力計量装置を提供する。【解決手段】 需要家が受電している商用電力の使用電力に加えて、商用電力系統に逆潮流させた売電電力を計測する第１のスマートメータ２と通信する第１通信ＩＦ１１と、需要家が発電或いは放電する異なる種類の２つの電源グループを備えて、一方の第１電源グループであるＦＩＴ電力を計測する第２のスマートメータ４と通信する第２通信ＩＦ１２と、第１通信ＩＦ１１及び第２通信ＩＦ１２から入手した電力情報を基に、ＦＩＴ電力の売電電力に加えて、非ＦＩＴ電力の売電電力を算出する電力計量装置ＣＰＵ１７と、入手した電力情報或いは算出した売電電力情報を表示する表示部１３とを備えている。【選択図】 図１PROBLEM TO BE SOLVED: To individually measure electric power sold by a specific type and other types of electric power with a simple configuration even if both a specific type of electric power generation equipment and other electric power generation equipment are provided. I will provide a. SOLUTION: In addition to the used power of commercial power received by a consumer, a first communication IF11 communicating with a first smart meter 2 for measuring the power sold by reverse power flow to the commercial power system, and demand. A second communication IF12 and a first communication IF11 that have two different types of power groups that the house generates or discharges and communicate with a second smart meter 4 that measures FIT power, which is one of the first power groups. Based on the power information obtained from the second communication IF12, in addition to the power sold by the FIT power, the power measuring device CPU 17 that calculates the power sold by the non-FIT power, and the obtained power information or the calculated power sold information Is provided with a display unit 13 for displaying. [Selection diagram] Fig. 1
Description
本発明は、受電電力に加えて家庭で発電された電力を売電する際に、商用電力系統に逆潮流させる電力の発電手段の違いで売電先等が異なる場合であっても、個々の売電電力を計測できる電力計量装置に関する。 In the present invention, when selling power generated at home in addition to the received power, even if the power selling destination is different due to the difference in the power generation means of the power to be reversely flowed to the commercial power system, The present invention relates to a power metering device that can measure power sales.
家庭用ＦＩＴ法に基づき太陽光発電等の再生可能エネルギーによる発電電力から需要家内で使用した電力を差し引いた余剰電力（ＦＩＴ電力）は、電力買取の対象となっており、発電電力を商用電力系統に逆潮流させた電力を電力量計で計測できるようになっている。一方で、ＦＩＴ法の対象となっていない燃料電池発電や交流側結合の蓄電池、更には電気自動車（ＥＶ又はＰＨＥＶ）からの放電設備（非ＦＩＴ電力）を持っている需要家は、再生可能エネルギーと区別されており商用電力系統に逆潮流して売電することが現状禁止されている。尚、ＦＩＴはFeed-in Tariff Programの略で、家庭用ＦＩＴ法とは、電気事業者による再生可能エネルギー電気の調達に関する特別措置法に基づき、家庭で発電した再生可能エネルギーを固定価格で買い取る制度をいう。
そのため、売電可能なＦＩＴ電力と売電が不可となっている非ＦＩＴ電力との双方の設備を備えた需要家では、例えば特許文献１に開示されているように、燃料電池により発電された電力が余剰電力となった場合は、別途設置した蓄電池に蓄電させて商用電力系統に逆潮流しないよう制御したり発電を停止した。
The surplus power (FIT power), which is obtained by subtracting the power used in the consumer from the power generated by renewable energy such as photovoltaic power generation based on the FIT Act for Home Use, is subject to purchase of power, and the generated power is used as a commercial power system. It is now possible to measure the reverse power flow with a watt-hour meter. On the other hand, consumers who have fuel cell power generation or AC-side coupled storage batteries that are not subject to the FIT method, as well as discharge facilities (non-FIT power) from electric vehicles (EV or PHEV) In other words, it is currently prohibited to sell power in reverse power flow to the commercial power system. FIT is an abbreviation for Feed-in Tariff Program. The FIT Act for Homes is a system for purchasing renewable energy generated at home at a fixed price based on the Act on Special Measures concerning Procurement of Renewable Energy Electricity by Electric Power Companies. Say.
Therefore, in a consumer equipped with both FIT power that can sell power and non-FIT power that cannot be sold, for example, as disclosed in Patent Document 1, power is generated by a fuel cell. When the power became surplus, the battery was stored in a separately installed storage battery and controlled so as not to flow backward into the commercial power system, or power generation was stopped.
しかしながら、今後はデマンドレスポンス（ＤＲ）の仕組みを用いた仮想発電所（ＶＰＰ）のリソースになる需要家設備として燃料電池発電や、蓄電池、更にはＥＶ又はＰＨＥＶからの放電電力が注目されており、今後これらの非ＦＩＴ電力も商用電力系統に逆潮流させて買い取りされることが想定される。
その場合、再生可能エネルギーとＶＰＰのリソースとなる発電・放電設備とは、買取価格や買い取り先が異なることが想定されるにもかかわらず、同一の引き込み線から逆潮流させることになるため、同一の需要家において双方を同時に稼働させた場合、売電電力の計測は簡単ではなく、現在これを行う計量システムはない。
一方で、ＦＩＴ電力と非ＦＩＴ電力の売電が混在しても、ＦＩＴ電力を優先して買い取られることが今後も継続されると考えられる。
However, in the future, fuel cell power generation, storage batteries, and discharge power from EVs or PHEVs are attracting attention as customer facilities that become resources of virtual power plants (VPPs) using a demand response (DR) mechanism. In the future, it is expected that these non-FIT power will also be purchased in reverse flow to the commercial power system.
In this case, the renewable energy and the power generation / discharge facilities that are the resources of the VPP are the same because the purchase price and the purchase destination are assumed to be different, but they will flow backward from the same lead-in line. In the case of both consumers operating at the same time, it is not easy to measure the power sales, and there is currently no weighing system that does this.
On the other hand, even if FIT power and non-FIT power sales are mixed, it is considered that FIT power is preferentially purchased.
そこで、本発明はこのような問題点に鑑み、特にＦＩＴ対象電力のように特定の種類の発電電力が優先して買い取られることを前提に、特定の種類の電力生成設備とそれ以外の電力生成設備の双方を備えても、特定の種類とそれ以外の種類の電力による売電電力を簡易な構成で個別に計測できる電力計量装置を提供することを目的としている。 Therefore, in view of such problems, the present invention is based on the premise that a specific type of generated power is preferentially purchased, such as FIT target power, and a specific type of power generation facility and other types of power generation. An object of the present invention is to provide a power metering device capable of individually measuring power sold by a specific type and other types of power with a simple configuration even if both facilities are provided.
上記課題を解決する為に、請求項１の発明は、需要家が受電している商用電力の使用電力に加えて、商用電力系統に逆潮流させた売電電力を計測する第１のスマートメータと通信する第１通信部と、需要家が発電或いは放電する異なる種類の２つの電源グループを備えて、一方の第１電源グループの電力を計測する第２のスマートメータと通信する第２通信部と、第１通信部及び第２通信部から入手した電力情報を基に、第１電源グループの電力の売電電力に加えて、他方の第２電源グループの売電電力を算出する売電電力演算部と、入手した電力情報或いは算出した売電電力情報を表示する表示部と、を備えたことを特徴とする。
この構成によれば、買取価格の異なる２種類の発電或いは放電電力のグループが混在しても、２つのスマートメータからの情報のみで、第１電源グループの電力の売電を優先させた場合の第１電源グループの電力の売電電力に加えて第２電源グループの電力の売電電力も算出可能であり、双方の売電価格が異なっても、また売電先が異なっても対応でき、一方のグループの電力を売電している間であっても他方のグループの出力を停止する必要がなく、効率の良い発電・放電を実施できる。
In order to solve the above-mentioned problems, the invention of claim 1 is a first smart meter that measures the power sale power that has been reverse-flowed in the commercial power system, in addition to the commercial power used by the customer. A first communication unit that communicates with a second smart meter that includes two different power source groups of different types that a customer generates or discharges and that measures the power of one of the first power source groups Based on the power information obtained from the first communication unit and the second communication unit, the power sale power for calculating the power sale power of the other second power supply group in addition to the power sale power of the first power supply group An arithmetic unit and a display unit for displaying the obtained power information or the calculated power sale power information are provided.
According to this configuration, even when two types of power generation or discharge power groups having different purchase prices are mixed, only the information from the two smart meters is used to prioritize the power sale of the first power supply group. In addition to the power selling power of the first power supply group, the power selling power of the power of the second power supply group can also be calculated, and even if both power selling prices are different or the power selling destinations are different, Even while the power of one group is being sold, it is not necessary to stop the output of the other group, and efficient power generation and discharge can be performed.
請求項２の発明は、請求項１に記載の構成において、第１電源グループの電力が再生可能エネルギーにより発電するＦＩＴ電力であり、第２電源グループの電力がそれ以外の発電或いは放電による非ＦＩＴ電力であることを特徴とする。
この構成によれば、２つのスマートメータからの情報のみで、ＦＩＴ電力の売電を優先させた場合のＦＩＴ電力の売電電力及び非ＦＩＴ電力の売電電力を算出するため、双方の売電価格が異なっても、また売電先が異なっても対応でき、これまで逆潮流時（売電時）には停止していた非ＦＩＴの発電や放電を停止する必要がなくなり、効率の良い発電・放電を実施できる。
尚、ＦＩＴ電力とは電気事業者による固定価格での買い取りが実施される需要家での再生可能エネルギーによる発電した電力の余剰分を示し、非ＦＩＴ電力とはそれ以外の需要家での発電電力或いは放電電力を示す。
According to a second aspect of the present invention, in the configuration of the first aspect, the power of the first power supply group is FIT power generated by renewable energy, and the power of the second power supply group is non-FIT generated by other power generation or discharge. It is electric power.
According to this configuration, the power selling power of the FIT power and the power selling power of the non-FIT power when the power selling of the FIT power is given priority only by the information from the two smart meters are calculated. Efficient power generation with no need to stop non-FIT power generation or discharge, which was previously stopped during reverse power flow (power sales), even if the price is different or the power selling destination is different・ Discharge can be performed.
Note that FIT power is the surplus of power generated by renewable energy at consumers that are purchased at a fixed price by electric utilities, and non-FIT power is generated power at other consumers. Alternatively, it indicates discharge power.
請求項３の発明は、請求項２に記載の構成において、売電電力演算部は、第１のスマートメータが逆潮流する売電電力値を計測したら、当該売電電力値が第２のスマートメータが計測したＦＩＴ電力値より大きければ、その差分となる電力値を非ＦＩＴ発電による売電電力値と判断することを特徴とする。
この構成によれば、非ＦＩＴ発電電力を直接計測することなく、非ＦＩＴによる売電電力値を算出することができ、簡易な構成で非ＦＩＴの売電電力を計測できる。
According to a third aspect of the present invention, in the configuration according to the second aspect, when the power sale power calculation unit measures the power sale power value at which the first smart meter flows backward, the power sale power value is the second smart power. If it is larger than the FIT power value measured by the meter, the power value that is the difference is determined as the power selling power value by non-FIT power generation.
According to this configuration, the non-FIT power sales value can be calculated without directly measuring the non-FIT power generation, and the non-FIT power sales power can be measured with a simple configuration.
本発明によれば、買取価格の異なる２種類の発電或いは放電電力のグループが混在しても、２つのスマートメータからの情報のみで、第１電源グループの電力の売電を優先させた場合の第１電源グループの電力の売電電力に加えて第２電源グループの電力の売電電力も算出可能であり、双方の売電価格が異なっても、また売電先が異なっても対応でき、一方のグループの電力を売電している間であっても他方のグループの出力を停止する必要がなく、効率の良い発電・放電を実施できる。 According to the present invention, even when two types of power generation or discharge power groups having different purchase prices are mixed, only the information from the two smart meters is used to prioritize the power sale of the first power supply group. In addition to the power selling power of the first power supply group, the power selling power of the power of the second power supply group can also be calculated. Even while the power of one group is being sold, it is not necessary to stop the output of the other group, and efficient power generation and discharge can be performed.
以下、本発明を具体化した実施の形態を、図面を参照して詳細に説明する。図１は本発明に係る電力計量装置の一例を示すブロック図であり、周辺機器を合わせて示している。図１において、１は電力計量装置、２は電力供給業者から商用電力系統を介して受電する電力を計測すると共に、需要家が発電した電力を商用電力系統に逆潮流させた売電電力を計測する第１のスマートメータ、３は需要家に設置されて需要家の個々の負荷（電気機器）に電力を分岐するための分電盤、４は太陽光発電設備５による発電電力を計測する第２のスマートメータ、６は外部への放電が可能な電気自動車（ＥＶ又はＰＨＥＶ）、７は商用電力により蓄電される蓄電池、８は電気自動車６及び蓄電池７などの放電電力を計測する電力量計である。 DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments embodying the present invention are described in detail below with reference to the drawings. FIG. 1 is a block diagram showing an example of a power metering device according to the present invention, and also shows peripheral devices. In FIG. 1, 1 is a power metering device, 2 is measuring the power received from a power supplier via a commercial power system, and measuring the power sold by causing the power generated by a consumer to flow backward to the commercial power system. The first smart meter, 3 is a distribution board for branching the power to individual loads (electrical devices) installed in the consumer and 4 is the first to measure the power generated by the solar power generation facility 5. Smart meter 2, 6 is an electric vehicle (EV or PHEV) capable of discharging to the outside, 7 is a storage battery that is stored by commercial power, 8 is a watt hour meter that measures the discharge power of the electric vehicle 6 and storage battery 7, etc. It is.
尚、第２のスマートメータ４は、ここでは太陽光発電による電力を計測するが、この発電は風力発電の電力でも、双方を組み合わせた電力でも良く、第２のスマートメータ４は再生可能エネルギーによる発電電力であるＦＩＴ電力を生成する第１電源グループの発電電力を計測するために設置される。また、電力量計８は、ＥＶ６や蓄電池、更には燃料電池発電等の非ＦＩＴ電力を生成する第２電源グループの発電・放電電力を計測する。 Here, the second smart meter 4 measures the electric power by solar power generation, but this electric power generation may be wind power or a combination of both, and the second smart meter 4 is based on renewable energy. It is installed to measure the generated power of the first power supply group that generates FIT power that is generated power. The watt-hour meter 8 measures the power generation / discharge power of the second power source group that generates non-FIT power such as EV6, storage battery, and fuel cell power generation.
電力計量装置１は、第１のスマートメータ２と無線通信するアンテナ１１ａを備えた第１通信ＩＦ１１、第２のスマートメータ４と無線通信するアンテナ１２ａを備えた第２通信ＩＦ１２、売電電力データ等を表示する表示部１３、表示の切り替え等を実施する操作部１４、受信した或いは演算した電力データを記憶するメモリ１５、演算結果を外部に出力するための第３通信ＩＦ１６、受電電力に加えてＦＩＴによる売電電力及び非ＦＩＴによる売電電力を演算すると共に電力計量装置全体を制御する電力計量装置ＣＰＵ１７等を備えている。
The power metering device 1 includes a first communication IF 11 having an
第１通信ＩＦ１１は第１のスマートメータ２とＢルート通信により電力データを入手し、第２通信ＩＦ１２は第２のスマートメータ４とＢルート通信により電力データを入手する。但し、第１のスマートメータ２は、需要家が電力供給業者から受電する電力の計測に加えて、需要家から逆潮流して売電される電力を計測する。 The first communication IF 11 acquires power data from the first smart meter 2 and B route communication, and the second communication IF 12 acquires power data from the second smart meter 4 and B route communication. However, the 1st smart meter 2 measures the electric power sold by a reverse flow from a consumer in addition to the measurement of the electric power which a consumer receives from an electric power supplier.
また第３通信ＩＦ１６は、例えばＨＥＭＳ（Home Energy Management Systemの略）機器と有線あるいは無線で接続されている場合は、ＨＥＭＳ機器において送信された情報、例えば売電電力情報や消費電力情報が表示される。更に、アグリゲータのサーバにインターネット等で接続されていたら、アグリゲータに関連する情報がサーバに送信され、例えば非ＦＩＴの発電・放電による売電電力データが送信される。 For example, when the third communication IF 16 is connected to a HEMS (abbreviation of Home Energy Management System) by wire or wirelessly, information transmitted by the HEMS device, for example, power sale power information and power consumption information is displayed. The Furthermore, if connected to the aggregator server via the Internet or the like, information related to the aggregator is transmitted to the server, for example, power selling power data by non-FIT power generation / discharge.
このように構成された電力計量装置１は、次のように売電電力を算出する。電力計量装置ＣＰＵ１７は、第１のスマートメータ２が売電を検出せず、商用電力の受電電力を計測している間は、そのデータをメモリ１５に保存すると共に表示部１３に表示する。また、外部からの要求に応じて送信する。また、第２のスマートメータ４から発電電力データを入手してメモリ１５に保存する。
この状態で、売電が開始されて第１のスマートメータ２が売電電力の計測を開始したら各種演算を開始する。具体的に、第１のスマートメータ２からは、例えば１５分毎に売電電力値（売電電力データ）Ｐ１を入手し、第２のスマートメータ４からは太陽光発電による発電電力値（発電電力データ）Ｐ２を同様のタイミングで入手する。
The power metering device 1 configured in this way calculates the sold power as follows. The power
In this state, when the power sale is started and the first smart meter 2 starts measuring the power sale power, various calculations are started. Specifically, from the first smart meter 2, for example, the power sale power value (power sale power data) P1 is obtained every 15 minutes, and from the second smart meter 4 the power generation value (power generation by solar power generation). Power data) P2 is obtained at the same timing.
そして、入手したデータを基に、売電電力値Ｐ１が発電電力値Ｐ２に等しい或いは小さい場合は、売電電力はＦＩＴ電力分であると判断し、太陽光発電の売電電力データとして出力し、表示部１３に売電電力データが表示される。また必要に応じて売電電力量が演算されて合わせて表示される。
一方、売電電力値Ｐ１が発電電力値Ｐ２より大きい場合は、太陽光発電電力の全発電量に加えて非ＦＩＴの発電・放電電力も売電されていると判断し、発電電力値Ｐ２が太陽光発電による売電電力、売電電力値Ｐ１から発電電力値Ｐ２を除いた値が非ＦＩＴの発電・放電による売電電力と判断して出力され、表示部１３にＦＩＴ電力、非ＦＩＴ電力のそれぞれの売電電力データが表示される。
Then, based on the obtained data, if the sold power value P1 is equal to or smaller than the generated power value P2, it is determined that the sold power is FIT power, and is output as the sold power data for solar power generation. The power sale power data is displayed on the
On the other hand, when the power sale power value P1 is larger than the generated power value P2, it is determined that non-FIT power generation / discharge power is also sold in addition to the total power generation amount of the solar power generation power. The power sold by solar power generation, the value obtained by subtracting the generated power value P2 from the sold power value P1, is determined as non-FIT generated / discharged power sold, and is output to the
また、これらのデータは第３通信ＩＦ１６から外部に送信される。例えば、ＨＥＭＳ機器が接続されている場合は、ＨＥＭＳ機器において売電電力情報が表示される。加えてアグリゲータのサーバと通信が可能であれば、そのサーバに対して非ＦＩＴの発電・放電による売電電力データが送信される。 These data are transmitted from the third communication IF 16 to the outside. For example, when a HEMS device is connected, the sold power information is displayed on the HEMS device. In addition, if communication with the aggregator server is possible, power selling power data by non-FIT power generation / discharge is transmitted to the server.
尚、非ＦＩＴの発電電力があっても、即ち非ＦＩＴ電力を生成する第２電源グループにおいて発電・放電が行われていても、逆潮流されている電力がＦＩＴ電力より小さいか等しい場合は、電力計量装置ＣＰＵ１７は非ＦＩＴ電力の売電は無いと判断する。
Even if there is non-FIT generated power, that is, even if power generation / discharge is performed in the second power supply group that generates non-FIT power, if the power that is flowing backward is less than or equal to FIT power, The power
このように、２つのスマートメータ２，４からの情報のみで、ＦＩＴ電力の売電を優先させた場合のＦＩＴ電力の売電電力及び非ＦＩＴ電力の売電電力を算出するため、双方の売電価格が異なっても、また売電先が異なっても対応でき、これまで逆潮流時（売電時）には停止していた非ＦＩＴの発電や放電を停止する必要がなくなり、効率の良い発電・放電を実施できる。
また、非ＦＩＴ発電電力を計測することなく、非ＦＩＴによる売電電力値を求めることができ、簡易な構成で非ＦＩＴの売電電力を計測できる。
As described above, the selling power of FIT power and the selling power of non-FIT power when the selling power of FIT power is given priority only by the information from the two smart meters 2 and 4 are calculated. Even if the electricity price is different or the power selling destination is different, it is not necessary to stop the non-FIT power generation and discharge that was stopped at the time of reverse power flow (power selling) so that it is efficient. Can generate and discharge electricity.
Further, the non-FIT power sales value can be obtained without measuring the non-FIT power generation, and the non-FIT power sales power can be measured with a simple configuration.
尚、上記実施形態ではＦＩＴ電力の売電を優先させた構成を示したが、非ＦＩＴ電力の売電を優先しても良く、その場合は第２のスマートメータ４を非ＦＩＴ電力側に設置すれば良い。
また、スマートメータ２，４毎にアンテナ１１ａ，１２ａを設けているが、１つのアンテナを兼用しても良い。
更に、非ＦＩＴ電力として電気自動車６や蓄電池７の放電を一例として挙げたが、非ＦＩＴ電力としては他にエコウィル（家庭用コージェネレーションシステム）やエネファーム（家庭用燃料電池コージェネレーションシステム）等がある。
In the above-described embodiment, the configuration in which priority is given to the sale of FIT power has been given. However, the sale of non-FIT power may be given priority, in which case the second smart meter 4 is installed on the non-FIT power side. Just do it.
Further, although the
Furthermore, as an example of the non-FIT power, the discharge of the electric vehicle 6 and the storage battery 7 is given, but other examples of the non-FIT power include Ecowill (household cogeneration system) and ENE-FARM (household fuel cell cogeneration system). is there.
１・・電力計量装置、２・・第１のスマートメータ、３・・分電盤、４・・第２のスマートメータ、５・・太陽光発電設備（第１電源グループ）、６・・電気自動車（第２電源グループ）、７・・蓄電池（第２電源グループ）、１１・・第１通信ＩＦ（第１通信部）、１２・・第２通信ＩＦ（第２通信部）、１３・・表示部、１７・・電力計量装置ＣＰＵ（売電電力演算部）。 1 .... Power metering device, 2 .... first smart meter, 3 .... distribution panel, 4 .... second smart meter, 5 .... photovoltaic power generation facility (first power supply group), 6 .... electricity Automobile (second power supply group), 7 ... Storage battery (second power supply group), 11 ... First communication IF (first communication unit), 12. Second communication IF (second communication unit), 13 .... Display unit, 17... Electric power metering device CPU (power sale power calculation unit).
Claims (3)
前記需要家が発電或いは放電電力を生成する異なる種類の２つの電源グループを備えて、一方の第１電源グループの電力を計測する第２のスマートメータと通信する第２通信部と、
前記第１通信部及び前記第２通信部から入手した電力情報を基に、前記第１電源グループの電力の売電電力に加えて、他方の第２電源グループの売電電力を算出する売電電力演算部と、
入手した電力情報或いは算出した売電電力情報を表示する表示部と、を備えたことを特徴とする電力計量装置。 A first communication unit that communicates with a first smart meter that measures the sold power that has been reverse-flowed in the commercial power grid in addition to the commercial power used by the consumer;
A second communication unit that communicates with a second smart meter that includes two different power supply groups for generating power or discharge power by the consumer and that measures the power of one of the first power supply groups;
Based on the power information obtained from the first communication unit and the second communication unit, in addition to the power sale power of the power of the first power supply group, the power sale of the other second power supply group is calculated. A power calculator;
A power metering device comprising: a display unit that displays the acquired power information or the calculated power sale power information.
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