JP6256844B2 - Power management apparatus, power management system, and power management method - Google Patents

Power management apparatus, power management system, and power management method Download PDF

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JP6256844B2
JP6256844B2 JP2015153501A JP2015153501A JP6256844B2 JP 6256844 B2 JP6256844 B2 JP 6256844B2 JP 2015153501 A JP2015153501 A JP 2015153501A JP 2015153501 A JP2015153501 A JP 2015153501A JP 6256844 B2 JP6256844 B2 JP 6256844B2
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power
storage battery
charging
power management
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JP2015195726A (en
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秀樹 武長
秀樹 武長
鈴木　淳一
淳一 鈴木
隆之 新居
隆之 新居
岡田　幸夫
幸夫 岡田
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Panasonic Intellectual Property Management Co Ltd
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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
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02B90/20—Smart grids as enabling technology in buildings sector
    • 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
    • Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/12—Energy storage units, uninterruptible power supply [UPS] systems or standby or emergency generators, e.g. in the last power distribution stages
    • 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
    • Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
    • Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
    • Y04S40/128—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment involving the use of Internet protocol

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  • Supply And Distribution Of Alternating Current (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)

Description

本発明は、需要家における蓄電量を管理する電力管理装置、電力管理システム、電力管理方法に関する。 The present invention is a power management device for managing the storage amount in the customer, the power management system, a power management method.

電力の供給元である電力会社は、商用電力の供給量が需要量を超える虞がある場合、供給範囲内の各需要家に対して、商用電力の供給量を低減させることを予め通知し、各需要家における電力使用量の削減を啓蒙することが考えられる。   When there is a possibility that the supply amount of commercial power exceeds the demand amount, the power company that is the power supply source notifies in advance to each consumer within the supply range that the supply amount of commercial power will be reduced, It is possible to enlighten the reduction of power consumption by each consumer.

このとき、集合住宅の各住戸、戸建て住宅、工場、事務所等の各需要家では、電力供給量の低減期間の前に、電力を十分に蓄積しておれば、電力供給量の低減期間における電力需要を満たすことができる。しかし、電力供給量の低減期間の前に、電力を十分に蓄積することができなければ、生活、業務、生産等に支障をきたす。   At this time, in each consumer unit such as an apartment house, a detached house, a factory, an office, etc., if the power is sufficiently accumulated before the power supply reduction period, It can meet the power demand. However, if sufficient power cannot be stored before the period for reducing the amount of power supply, life, work, production, etc. will be hindered.

そこで、蓄電装置を設置した電源システムでは、商用電力の供給が停止したときに、蓄電装置の電力供給力を増大させ、蓄電装置から負荷装置へ電力を供給することが提案されている（例えば、特許文献１参照）。具体的には、商用電源の停止情報が入力された場合に、蓄電装置の目標状態量（例えばＳＯＣ（State Of Charge）の目標量）を向上させるとともに、充電電力を増大させている。   Therefore, in a power supply system in which a power storage device is installed, it has been proposed to increase the power supply capability of the power storage device and supply power from the power storage device to the load device when the supply of commercial power stops (for example, Patent Document 1). Specifically, when the commercial power supply stop information is input, the target state quantity (for example, SOC (State Of Charge) target quantity) of the power storage device is improved and the charging power is increased.

特開２００８−１８７８００号公報JP 2008-187800 A

本発明の目的は、ピークカットを実行しながら、機器の動作電力を確保することができる電力管理装置、電力管理システム、電力管理方法を提供することにある。 An object of the present invention, while performing peak shaving, power management device capable of ensuring operating power of the device, the power management system is to provide a power management method.

本発明の電力管理装置は、需要家に設けられた蓄電池を充電し、前記蓄電池の蓄電電力を放電させる電力管理装置であって、商用電力の使用を控えて電力需要のピークを抑制する電力ピークカットの開始時に前記蓄電池の蓄電電力が所定の目標値に達しているように、単位時間あたりの充電量を制御し、前記電力ピークカットの開始前の前記蓄電池の充電には、少なくとも太陽光発電装置の発電電力を用い、前記電力ピークカットの開始時になったとしても前記蓄電池の蓄電電力が所定の目標値に達しないと判断した場合、前記商用電力および前記太陽光発電装置の発電電力を用いて動作する機器の一部または全部を待機状態に制御することを特徴とする。 The power management apparatus of the present invention is a power management apparatus that charges a storage battery provided at a consumer and discharges the stored power of the storage battery, and suppresses the peak of power demand by refraining from using commercial power. as the stored power of the storage battery at the start of the cut has reached the predetermined target value, and controls the charging amount per unit of time, the charging of the battery before the start of the power peak cut is at least sunlight When it is determined that the stored power of the storage battery does not reach a predetermined target value even when the power peak cut starts, using the generated power of the power generator, the commercial power and the generated power of the solar power generator are It is characterized in that a part or all of the devices that operate using the device are controlled in a standby state .

本発明の電力管理システムは、蓄電池と、上述の電力管理装置とを備えることを特徴とする。   The power management system of the present invention includes a storage battery and the power management apparatus described above.

本発明の電力管理方法は、需要家に設けられた蓄電池を充電し、前記蓄電池の蓄電電力を放電させる電力管理方法であって、情報を受信するステップと、商用電力の使用を控えて電力需要のピークを抑制する電力ピークカットの開始時に前記蓄電池の蓄電電力が所定の目標値に達しているように、単位時間あたりの充電量を制御するステップと、前記電力ピークカットの開始前の前記蓄電池の充電には、少なくとも太陽光発電装置の発電電力を用い、前記電力ピークカットの開始時になったとしても前記蓄電池の蓄電電力が所定の目標値に達しないと判断した場合、前記商用電力および前記太陽光発電装置の発電電力を用いて動作する機器の一部または全部を待機状態に制御するステップとを有することを特徴とする。
The power management method of the present invention is a power management method for charging a storage battery provided in a consumer and discharging the stored power of the storage battery, the step of receiving information, and a demand for power without using commercial power as the stored power of the storage battery at the start of suppressing peak power cut peaks has reached a predetermined target value, and controlling the charge amount per unit of time, the pre-start of the power peak cut When charging the storage battery, at least using the generated power of the photovoltaic power generation device, even when the power peak cut starts, when it is determined that the stored power of the storage battery does not reach a predetermined target value, the commercial power and And a step of controlling a part or all of the devices that operate using the generated power of the solar power generation device to a standby state .

以上説明したように、本発明では、ピークカットを実行しながら、機器の動作電力を確保することができるという効果がある。   As described above, according to the present invention, there is an effect that it is possible to ensure the operating power of the device while performing the peak cut.

実施形態１の電力管理システムの構成を示すブロック図である。It is a block diagram which shows the structure of the power management system of Embodiment 1. 実施形態２の電力管理システムの構成を示すブロック図である。It is a block diagram which shows the structure of the power management system of Embodiment 2.

以下、本発明の実施の形態を図面に基づいて説明する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings.

（実施形態１）
本実施形態の電力管理システムは、電力会社から電力を供給されている各需要家において用いるものであり、図１に示すように、分電盤１１、電力管理装置１２、機器１３、検針メータ１４、蓄電池１５を主構成として備える。 (Embodiment 1)
The power management system of the present embodiment is used in each consumer who is supplied with electric power from an electric power company. As shown in FIG. 1, a distribution board 11, a power management device 12, a device 13, and a meter-reading meter 14. The storage battery 15 is provided as a main configuration.

分電盤１１は、集合住宅の各住戸、戸建て住宅、工場、事務所等の需要家内に引き込まれたＡＣ１００／２００Ｖの幹線電路Ｗａ１が接続され、幹線電路Ｗａ１を介して、電力会社からの商用電源が接続されている。分電盤１１内には、複数の分岐ブレーカから構成される分岐部１１１が収納されている。幹線電路Ｗａ１は、分岐部１１１を介して、住宅に敷設した複数の分岐電路Ｗａ２に分岐する。分岐電路Ｗａ２のそれぞれは、照明機器、空調機器、パーソナルコンピュータ（パソコン）等の機器１３が接続され、これらの機器１３へ動作電力を供給する。なお、商用電源は、各地に設けられた変電所から需要家の近傍の電柱Ｄに設けた柱上変圧器Ｔｒに配電され、柱上変圧器Ｔｒによって降圧された後に、各需要家へ配電される。なお、需要家の形態としては、集合住宅の各住戸、戸建て住宅、工場、事務所以外であってもよい。   The distribution board 11 is connected to an AC100 / 200V main line Wa1 drawn into a consumer such as a dwelling unit, a detached house, a factory, an office, etc. of a collective housing, and a commercial from an electric power company through the main line Wa1. The power supply is connected. In the distribution board 11, a branch portion 111 composed of a plurality of branch breakers is accommodated. The trunk line electric circuit Wa1 branches to a plurality of branch electric lines Wa2 laid in the house via the branch part 111. Each branch electric circuit Wa <b> 2 is connected to a device 13 such as a lighting device, an air conditioner, or a personal computer (PC), and supplies operating power to these devices 13. The commercial power source is distributed from the substations provided in various places to the pole transformer Tr provided in the utility pole D near the customer, and after being stepped down by the pole transformer Tr, it is distributed to each consumer. The In addition, as a form of a consumer, other than each dwelling unit of a housing complex, a detached house, a factory, and an office may be sufficient.

次に、電力管理装置１２は、インバータ部１２１と、充放電部１２２と、機器制御部１２３とを備える。   Next, the power management apparatus 12 includes an inverter unit 121, a charge / discharge unit 122, and a device control unit 123.

本システムは、リチウムイオン電池等で構成される蓄電池１５を備えており、蓄電池１５は、充放電部１２２に接続される。   This system includes a storage battery 15 configured by a lithium ion battery or the like, and the storage battery 15 is connected to the charge / discharge unit 122.

インバータ部１２１は、充放電部１２２を介して入力される蓄電池１５の直流出力を交流電圧に変換し、インバータ部１２１の交流出力は、住宅に敷設した交流電路Ｗａ３を介して分電盤１１に供給される。なお、インバータ部１２１は、その交流出力を、幹線電路Ｗａ１を介して供給される商用電源に協調させる機能を有する。   The inverter unit 121 converts the DC output of the storage battery 15 input via the charging / discharging unit 122 into an AC voltage, and the AC output of the inverter unit 121 is sent to the distribution board 11 via the AC circuit Wa3 installed in the house. Supplied. Note that the inverter unit 121 has a function of coordinating the AC output with a commercial power source supplied via the main line Wa1.

充放電部１２２は、蓄電池１５の充放電制御を行う、具体的に、充放電部１２２は、商用電源から幹線電路Ｗａ１を介して供給される商用電力が入力され、この商用電力を直流電力に変換して蓄電池１５を充電する。さらに充放電部１２２は、蓄電池１５の直流出力をインバータ部１２１へ供給することによって、蓄電池１５の蓄電電力を放電させて、機器１３へ交流電力を供給する。   The charging / discharging unit 122 performs charging / discharging control of the storage battery 15. Specifically, the charging / discharging unit 122 receives commercial power supplied from a commercial power source via the main line Wa1, and converts the commercial power into DC power. Conversion is performed to charge the storage battery 15. Furthermore, the charging / discharging unit 122 supplies the DC power of the storage battery 15 to the inverter unit 121, thereby discharging the stored power of the storage battery 15 and supplying AC power to the device 13.

機器制御部１２３は、通信線Ｌ１を介して機器１３と通信可能に接続しており、通常時において、機器１３に対して、予め設定されているスケジュール制御、省エネ制御、シーン制御等を実行する。機器１３は、商用電源から供給される商用電力、電力管理装置１２のインバータ部１２１から供給される電力（蓄電池１５の蓄電電力）を用いて動作する。なお、機器制御部１２３は、機器１３との間で無線信号による通信を行ってもよい。   The device control unit 123 is communicably connected to the device 13 via the communication line L1 and executes preset schedule control, energy saving control, scene control, and the like on the device 13 in a normal time. . The device 13 operates using commercial power supplied from a commercial power source and power supplied from the inverter unit 121 of the power management device 12 (power stored in the storage battery 15). Note that the device control unit 123 may communicate with the device 13 using a radio signal.

そして、通常（後述の電力ピークカットの要請がない場合）、インバータ部１２１の交流出力動作、充放電部１２２の充放電動作は、蓄電池１５の蓄電量、時刻等に基づいて行われる。そして、機器１３は、蓄電池１５の蓄電電力、または商用電源、または蓄電池１５の蓄電電力と商用電源との組み合わせが供給される。また、電力管理装置１２は、無線通信機能を有しており、分電盤１１、検針メータ１４等との間で後述の無線通信を行う。   In general (when there is no request for a power peak cut described later), the AC output operation of the inverter unit 121 and the charge / discharge operation of the charge / discharge unit 122 are performed based on the storage amount of the storage battery 15, the time, and the like. The device 13 is supplied with the stored power of the storage battery 15 or a commercial power source, or a combination of the stored power of the storage battery 15 and the commercial power source. The power management apparatus 12 has a wireless communication function, and performs wireless communication, which will be described later, with the distribution board 11, meter reading meter 14, and the like.

次に、検針メータ１４は、幹線電路Ｗａ１に設けられ、需要家における商用電力の使用量を計測し、この計測結果（検針データ）を無線通信、電力線搬送通信等を用いて送信する遠隔検針機能を具備する。検針メータから送信された検針データは、例えば住宅近傍の電柱Ｄに設置した親機Ｘが受信し、親機Ｘは、光ファイバ等を用いて、インターネットＮＴ１に接続した電力会社の管理サーバＣＳへ検針データを送信する。   Next, the meter-reading meter 14 is provided on the main line Wa1, and measures the amount of commercial power used by consumers, and transmits a measurement result (meter-reading data) using wireless communication, power line carrier communication, or the like. It comprises. Meter reading data transmitted from the meter-reading meter is received by, for example, the master unit X installed on the utility pole D near the house, and the master unit X uses an optical fiber or the like to the management server CS of the power company connected to the Internet NT1. Transmit meter reading data.

また、親機Ｘは、電力会社の管理サーバＣＳから送信された各種信号を、インターネットＮＴ１を含む通信ネットワークを介して検針メータ１４へ送信し、検針メータ１４は、受信した信号を需要家内の無線端末へ無線送信する機能も有する。   Moreover, the main | base station X transmits the various signals transmitted from the management server CS of the electric power company to the meter-reading meter 14 via a communication network including the Internet NT1, and the meter-reading meter 14 transmits the received signal to the wireless in the consumer. It also has a function of wireless transmission to the terminal.

そして、電力需要の増加や電力会社の発電状況等によっては、電力会社の配電範囲において、商用電源の需要量が発電量を超える電力供給不足によって停電が発生する虞がある。この場合、電力会社から配電範囲内の各需要家に対して、商用電源の使用を控えて電力需要のピークを抑制する電力ピークカットの要請がなされる。   Depending on the increase in power demand, the power generation status of the power company, etc., there is a possibility that a power failure may occur due to a shortage of power supply in which the demand amount of the commercial power source exceeds the power generation amount in the power company distribution range. In this case, the power company requests each customer in the distribution range to cut the power peak to refrain from using the commercial power source and suppress the peak of the power demand.

本実施形態では、電力ピークカットの要請時に、電力会社の管理サーバＣＳから配電範囲内の各需要家へ、インターネットＮＴ１を含む通信ネットワークを介して電力供給情報が送信され、各需要家の検針メータ１４が電力供給情報を受信する。電力供給情報は、商用電源から幹線電路Ｗａ１を介して供給可能な商用電力の時間変動に関する情報であり、本実施形態では、「＊月＊日 ＊時〜＊時まで供給可能な商用電力を＊％低減」という情報で構成される。検針メータ１４は、この電力供給情報を電力管理装置１２へ無線信号で転送する。   In this embodiment, when a power peak cut is requested, power supply information is transmitted from the management server CS of the power company to each customer in the distribution range via a communication network including the Internet NT1, and the meter reading meter of each customer 14 receives power supply information. The power supply information is information related to the time fluctuation of commercial power that can be supplied from the commercial power supply via the trunk line Wa1, and in this embodiment, the commercial power that can be supplied from * month * day * hour to * hour * % Reduction ”. The meter-reading meter 14 transfers this power supply information to the power management apparatus 12 by a radio signal.

ここで、検針メータ１４−管理サーバＣＳ間の通信ネットワークは、検針メータ１４の検針データを送信する遠隔検針ネットワークである。したがって、電力供給情報は、この遠隔検針ネットワークを用いて各需要家へ伝達されるので、需要家は、電力供給情報取得用のネットワークを別に設ける必要がない。すなわち、本電力管理システムは、システム構築の簡略化を図りながら、商用電源の電力供給情報を取得することができる。   Here, the communication network between the meter-reading meter 14 and the management server CS is a remote meter-reading network that transmits meter-reading data of the meter-reading meter 14. Therefore, since the power supply information is transmitted to each consumer using this remote meter reading network, the consumer does not need to provide a separate network for acquiring power supply information. That is, the power management system can acquire the power supply information of the commercial power supply while simplifying the system construction.

電力管理装置１２の充放電部１２２は、受信した電力供給情報に基づき、電力ピークカットの開始時刻を認識し、この電力ピークカットの開始時刻を、充電停止タイミングとする。この充電停止タイミングは、需要家に対して供給可能な商用電力が機器１３の使用電力を下回って余剰電力がゼロになる時刻であり、充電停止タイミング以降では、蓄電池１５の充電が不可能になる。すなわち、充電停止タイミングは、商用電力の供給量が低減して、蓄電池１５の充電に用いることができる商用電力が所定量（この場合はゼロ）を下回るタイミングである。   The charging / discharging unit 122 of the power management apparatus 12 recognizes the start time of the power peak cut based on the received power supply information, and sets the start time of the power peak cut as the charge stop timing. This charging stop timing is a time when the commercial power that can be supplied to the consumer falls below the power used by the device 13 and the surplus power becomes zero. After the charging stop timing, the storage battery 15 cannot be charged. . That is, the charging stop timing is a timing at which the supply amount of commercial power is reduced and the commercial power that can be used for charging the storage battery 15 falls below a predetermined amount (in this case, zero).

そして、充放電部１２２は、充電停止タイミング（電力ピークカットの開始時刻）には、蓄電池１５のＳＯＣ（State Of Charge）が予め決められた所定の目標値（例えば８０％）に達しているように、蓄電池１５を急速充電する。   Then, the charging / discharging unit 122 seems to have reached a predetermined target value (for example, 80%) of the SOC (State Of Charge) of the storage battery 15 at the charging stop timing (power peak cut start time). In addition, the storage battery 15 is rapidly charged.

すなわち、急速充電の開始時刻、および急速充電時に蓄電池１５を充電する単位時間あたりの充電量は、充電停止タイミングにおいて、蓄電池１５のＳＯＣが予め決められた所定の目標値に達しているように決定される。具体的に、急速充電の開始時刻は、電力供給情報の受信後の時刻に設定され（例えば、受信時刻＋１０分）、単位時間あたりの充電量は、急速充電の開始時刻と充電停止タイミングとに基づいて決定される。この単位時間あたりの充電量は、急速充電の開始時刻から充電停止タイミングまでの期間が長いほど、小さくなる。したがって、急速充電の開始時刻から充電停止タイミングまでの期間が長い場合は、急速充電中であっても、機器１３へ供給可能な交流電力が増大し、動作可能な機器１３を増やすことができる。   That is, the start time of the quick charge and the charge amount per unit time for charging the storage battery 15 during the quick charge are determined so that the SOC of the storage battery 15 has reached a predetermined target value determined in advance at the charge stop timing. Is done. Specifically, the start time of the quick charge is set to the time after receiving the power supply information (for example, the reception time +10 minutes), and the charge amount per unit time is set to the start time of the quick charge and the charge stop timing. To be determined. The amount of charge per unit time becomes smaller as the period from the quick charge start time to the charge stop timing is longer. Therefore, when the period from the start time of the quick charge to the charge stop timing is long, the AC power that can be supplied to the device 13 is increased even during the quick charge, and the operable devices 13 can be increased.

このように、電力管理装置１２は、電力供給情報に基づいて、充電停止タイミングに蓄電池１５のＳＯＣが所定の目標値に達しているように、急速充電を開始し、単位時間あたりの充電量を制御する。   As described above, the power management device 12 starts the rapid charging based on the power supply information so that the SOC of the storage battery 15 reaches the predetermined target value at the charging stop timing, and determines the charging amount per unit time. Control.

充放電部１２２は、充電停止タイミング以降において、蓄電池１５の直流出力をインバータ部１２１へ供給することによって、蓄電池１５の蓄電電力を放電させる。そして、充電停止タイミング以降において、蓄電池１５の蓄電電力と商用電源との組み合わせが機器１３に供給され、ピークカットを実行しながら、機器１３の動作電力を確保することができる。   The charging / discharging unit 122 discharges the stored electric power of the storage battery 15 by supplying the DC output of the storage battery 15 to the inverter unit 121 after the charging stop timing. Then, after the charging stop timing, the combination of the stored power of the storage battery 15 and the commercial power supply is supplied to the device 13, and the operating power of the device 13 can be ensured while performing the peak cut.

そして、充電停止タイミング（電力ピークカットの開始時刻）には、蓄電池１５のＳＯＣが予め決められた所定の目標値（例えば８０％）に達しているので、電力ピークカット期間においても、機器１３への供給電力を確保することができる。   Then, since the SOC of the storage battery 15 has reached a predetermined target value (for example, 80%) determined in advance at the charging stop timing (power peak cut start time), even during the power peak cut period, to the device 13. Can be ensured.

また、充放電部１２２は、充電停止タイミング以降において、各機器１３の動作パターンに基づいて蓄電電力の放電量を制御してもよい。例えば、全ての機器１３から、ピークカット期間にも動作を保障する機器１３を予め選択しておき、機器制御部１２３は、ピークカット期間において、この動作保障された機器１３以外の機器１３を待機状態に制御する。そして、充放電部１２２は、動作保障された機器１３の動作パターンに基づいて放電量を制御することによって、蓄電池１５の蓄電電力を効率よく消費することができ、蓄電電力の使用可能期間を長くすることができる。また、動作保障された機器１３は、ライフラインを守る機器であり、テレビ、ネットワーク機器、最小限の照明機器等であり、外部とのネットワーク通信を行うことができる検針メータ１４も含まれる。   Further, the charging / discharging unit 122 may control the discharge amount of the stored power based on the operation pattern of each device 13 after the charging stop timing. For example, a device 13 that guarantees the operation during the peak cut period is selected in advance from all the devices 13, and the device control unit 123 waits for a device 13 other than the device 13 for which the operation is guaranteed during the peak cut period. Control to the state. The charging / discharging unit 122 can efficiently consume the stored power of the storage battery 15 by controlling the discharge amount based on the operation pattern of the device 13 whose operation is guaranteed, and the usable period of the stored power can be extended. can do. The operation-guaranteed device 13 is a device that protects the lifeline, is a television, a network device, a minimum lighting device, and the like, and includes a meter-reading meter 14 that can perform network communication with the outside.

また、充放電部１２２は、需要家に供給された商用電力のうち、機器１３が使用しない余剰電力を用いて蓄電池１５を充電している。そして、充放電部１２２が、現在の余剰電力を用いて単位時間あたりの充電量を最大にした場合でも、充電停止タイミングに蓄電池１５のＳＯＣが所定の目標値に達しないと判断した場合、機器制御部１２３は、一部または全部の機器１３を待機状態に制御する。すなわち、動作可能な機器１３の台数を減らすことによって、機器１３による商用電力の使用量が低減し、余剰電力が増大するので、充放電部１２２は、急速充電用の電力を確保して、単位時間あたりの充電量をより高く設定できる。この場合、蓄電池１５のＳＯＣを所定の目標値により近付けることができるので、充電停止タイミングにおける蓄電池１５の蓄電量をより高くすることができ、ピークカット期間の供給電力をより確保することができる。   Moreover, the charging / discharging part 122 is charging the storage battery 15 using the surplus electric power which the apparatus 13 does not use among the commercial electric power supplied to the consumer. When the charging / discharging unit 122 determines that the SOC of the storage battery 15 does not reach the predetermined target value at the charging stop timing even when the current surplus power is used to maximize the charging amount per unit time, The control unit 123 controls a part or all of the devices 13 to a standby state. That is, by reducing the number of operable devices 13, the amount of commercial power used by the devices 13 is reduced and surplus power is increased. Therefore, the charging / discharging unit 122 ensures power for quick charging and The amount of charge per hour can be set higher. In this case, since the SOC of the storage battery 15 can be brought closer to the predetermined target value, the amount of power stored in the storage battery 15 at the charge stop timing can be increased, and the supply power during the peak cut period can be further secured.

（実施形態２）
本実施形態の電力管理システムは、図２に示すように、太陽電池１６と、パワーコンディショナ１７とを各需要家に設けたものであり、実施形態１と同様の構成には同一の符号を付して説明は省略する。 (Embodiment 2)
As shown in FIG. 2, the power management system of the present embodiment is provided with a solar cell 16 and a power conditioner 17 in each consumer, and the same reference numerals are given to the same configurations as those of the first embodiment. A description thereof will be omitted.

本システムは、太陽電池１６と、パワーコンディショナ１７とで太陽光発電装置を構成しており、太陽光によって太陽電池１６が発電した直流電力は、パワーコンディショナ１７に供給され、パワーコンディショナ１７によって交流電力に変換される。   In the present system, a solar battery 16 and a power conditioner 17 constitute a solar power generation device, and DC power generated by the solar battery 16 by sunlight is supplied to the power conditioner 17, and the power conditioner 17. Is converted into AC power.

パワーコンディショナ１７の交流出力は、交流電路Ｗａ３に供給される。通常（電力ピークカットの要請がない場合）、パワーコンディショナ１７の交流出力のうち、機器１３で消費されなかった余剰分は、幹線電路Ｗａ１を介して商用電源へ逆潮流（売電）する。なお、パワーコンディショナ１７は、商用電源が供給する商用電力に交流出力を協調させる系統連系運転機能を有する。   The alternating current output of the power conditioner 17 is supplied to the alternating current circuit Wa3. Normally (when there is no request for power peak cut), the surplus of the AC output from the power conditioner 17 that has not been consumed by the device 13 is reversely flowed (sold) to the commercial power supply via the trunk line Wa1. Note that the power conditioner 17 has a grid-connected operation function for coordinating AC output with commercial power supplied from commercial power.

そして、電力会社から電力ピークカットの要請があった場合、パワーコンディショナ１７の交流出力のうち、機器１３で消費されなかった余剰分は、蓄電池１５の急速充電に用いられる。したがって、蓄電池１５の急速充電には、太陽光発電装置の発電電力を商用電力に併せて用いることができるので、蓄電池１５の蓄電量を、より確実に確保することができる。   Then, when there is a request for power peak cut from the power company, the surplus that is not consumed by the device 13 in the AC output of the power conditioner 17 is used for quick charging of the storage battery 15. Therefore, since the power generated by the solar power generator can be used together with the commercial power for rapid charging of the storage battery 15, the amount of power stored in the storage battery 15 can be more reliably ensured.

また、電力ピークカット時には、太陽光発電装置の発電電力を、蓄電池１５の蓄電電力に併せて用いることができるので、電力ピークカット時において使用可能な電力が増大する。   Moreover, since the electric power generated by the photovoltaic power generator can be used together with the stored electric power of the storage battery 15 at the time of power peak cut, the power that can be used at the time of power peak cut increases.

上述の電力管理装置１２は、需要家に供給された商用電力を用いて蓄電池１５を充電し、蓄電池１５の蓄電電力を放電させる。そして、電力管理装置１２は、受信した情報に基づいて、充電停止タイミングに蓄電池１５の蓄電電力が所定の目標値に達しているように、蓄電池１５の充電を開始し、単位時間あたりの充電量を制御することを特徴とする。充電停止タイミングは、商用電力の供給量が低減して蓄電池１５の充電に用いることができる商用電力が所定量を下回るタイミングである。   The power management device 12 described above charges the storage battery 15 using commercial power supplied to the consumer, and discharges the stored power of the storage battery 15. Then, the power management device 12 starts charging the storage battery 15 based on the received information so that the stored power of the storage battery 15 reaches a predetermined target value at the charging stop timing, and the charge amount per unit time It is characterized by controlling. The charging stop timing is a timing at which commercial power that can be used for charging the storage battery 15 falls below a predetermined amount due to a reduction in the amount of commercial power supplied.

さらに上述の電力管理システムは、蓄電池１５と、電力管理装置１２とを備えることを特徴とする。   Furthermore, the above-described power management system includes a storage battery 15 and a power management device 12.

さらに上述の蓄電池１５は、需要家に供給された商用電力を用いて充電され、電力管理装置１２の制御により放電する。蓄電池１５は、電力管理装置１２が受信した情報に基づいて、電力管理装置１２により、充電停止タイミングに蓄電池１５の蓄電電力が所定の目標値に達しているように、充電を開始し、単位時間あたりの充電量を制御されることを特徴とする。充電停止タイミングは、商用電力の供給量が低減して蓄電池１５の充電に用いることができる商用電力が所定量を下回るタイミングである。   Furthermore, the above-described storage battery 15 is charged using commercial power supplied to a consumer and discharged under the control of the power management device 12. Based on the information received by the power management device 12, the storage battery 15 starts charging so that the stored power of the storage battery 15 reaches a predetermined target value at the charging stop timing by the power management device 12, and unit time The amount of charge per unit is controlled. The charging stop timing is a timing at which commercial power that can be used for charging the storage battery 15 falls below a predetermined amount due to a reduction in the amount of commercial power supplied.

さらに、上述の電力管理方法は、需要家に供給された商用電力を用いて蓄電池１５を充電し、蓄電池１５の蓄電電力を放電させる。この電力管理方法は、情報を受信するステップと、受信した情報に基づいて、充電停止タイミングに蓄電池１５の蓄電電力が所定の目標値に達しているように、蓄電池１５の充電を開始し、単位時間あたりの充電量を制御するステップとを有することを特徴とする。充電停止タイミングは、商用電力の供給量が低減して蓄電池１５の充電に用いることができる商用電力が所定量を下回るタイミングである。   Furthermore, the above-described power management method charges the storage battery 15 using commercial power supplied to the consumer, and discharges the stored power of the storage battery 15. This power management method starts charging the storage battery 15 based on the received information, and based on the received information, so that the stored power of the storage battery 15 has reached a predetermined target value at the charging stop timing. And a step of controlling the amount of charge per hour. The charging stop timing is a timing at which commercial power that can be used for charging the storage battery 15 falls below a predetermined amount due to a reduction in the amount of commercial power supplied.

１１ 分電盤
１２ 電力管理装置
１２１ インバータ部
１２２ 充放電部
１２３ 機器制御部
１３ 機器
１４ 検針メータ
１５ 蓄電池
ＣＳ 管理サーバ DESCRIPTION OF SYMBOLS 11 Distribution board 12 Power management apparatus 121 Inverter part 122 Charging / discharging part 123 Equipment control part 13 Equipment 14 Meter-reading meter 15 Storage battery CS management server

Claims (4)

需要家に設けられた蓄電池を充電し、前記蓄電池の蓄電電力を放電させる電力管理装置であって、
商用電力の使用を控えて電力需要のピークを抑制する電力ピークカットの開始時に前記蓄電池の蓄電電力が所定の目標値に達しているように、単位時間あたりの充電量を制御し、
前記電力ピークカットの開始前の前記蓄電池の充電には、少なくとも太陽光発電装置の発電電力を用い、
前記電力ピークカットの開始時になったとしても前記蓄電池の蓄電電力が所定の目標値に達しないと判断した場合、前記商用電力および前記太陽光発電装置の発電電力を用いて動作する機器の一部または全部を待機状態に制御する
ことを特徴とする電力管理装置。 A power management device that charges a storage battery provided to a consumer and discharges the stored power of the storage battery,
As the stored power of the storage battery at the start of the commercial power suppressing power peak cut the peak of power demand ahead of the use of has reached a predetermined target value, and controls the charging amount per unit of time,
For charging the storage battery before the start of the power peak cut, use at least the generated power of the solar power generation device,
If it is determined that the stored power of the storage battery does not reach a predetermined target value even when the power peak cut starts, a part of the device that operates using the commercial power and the generated power of the solar power generation device Alternatively, a power management apparatus that controls all of them to a standby state . 前記商用電力および前記蓄電池の蓄電電力を用いて動作する複数の機器のうち一部を動作保障機器として選択し、
前記電力ピークカットの開始時以降において、前記複数の機器のうち前記動作保障機器以外の機器を待機状態に制御し、前記動作保障機器の動作パターンに基づいて前記蓄電池の蓄電電力の放電量を制御する
ことを特徴とする請求項１記載の電力管理装置。 Selecting a part of the plurality of devices that operate using the commercial power and the stored power of the storage battery as the operation guarantee device,
After the start of the power peak cut, devices other than the operation-guaranteed device among the plurality of devices are controlled to be in a standby state, and the discharge amount of the storage power of the storage battery is controlled based on the operation pattern of the operation-assured device. the power management apparatus according to claim 1, characterized in that. 蓄電池と、請求項１または２記載の電力管理装置とを備えることを特徴とする電力管理システム。A power management system comprising a storage battery and the power management apparatus according to claim 1. 需要家に設けられた蓄電池を充電し、前記蓄電池の蓄電電力を放電させる電力管理方法であって、
情報を受信するステップと、
商用電力の使用を控えて電力需要のピークを抑制する電力ピークカットの開始時に前記蓄電池の蓄電電力が所定の目標値に達しているように、単位時間あたりの充電量を制御するステップと、
前記電力ピークカットの開始前の前記蓄電池の充電には、少なくとも太陽光発電装置の発電電力を用い、前記電力ピークカットの開始時になったとしても前記蓄電池の蓄電電力が所定の目標値に達しないと判断した場合、前記商用電力および前記太陽光発電装置の発電電力を用いて動作する機器の一部または全部を待機状態に制御するステップと
を有することを特徴とする電力管理方法。 A power management method for charging a storage battery provided in a consumer and discharging the stored power of the storage battery,
Receiving information; and
As the stored power of the storage battery at the start of the commercial power suppressing power peak cut the peak of power demand ahead of the use of has reached a predetermined target value, and controlling the charge amount per unit of time,
For charging the storage battery before the start of the power peak cut, at least the power generated by the photovoltaic power generation device is used, and even if the power peak cut starts, the stored power of the storage battery does not reach a predetermined target value. And a step of controlling a part or all of the devices that operate using the commercial power and the generated power of the solar power generation device to a standby state .
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