JP6002196B2 - Load control device - Google Patents
Load control device Download PDFInfo
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- JP6002196B2 JP6002196B2 JP2014228226A JP2014228226A JP6002196B2 JP 6002196 B2 JP6002196 B2 JP 6002196B2 JP 2014228226 A JP2014228226 A JP 2014228226A JP 2014228226 A JP2014228226 A JP 2014228226A JP 6002196 B2 JP6002196 B2 JP 6002196B2
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- water storage
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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
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
- Y02B70/3225—Demand response systems, e.g. load shedding, peak shaving
-
- 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
- Y02E60/10—Energy storage using batteries
-
- 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
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
-
- 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
- Y04S20/20—End-user application control systems
- Y04S20/222—Demand response systems, e.g. load shedding, peak shaving
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- Supply And Distribution Of Alternating Current (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Description
本発明の実施形態は、負荷制御装置に関する。 Embodiments described herein relate generally to a load control device.
従来、住宅に自然エネルギー発電装置、例えば太陽光発電装置を設置する場合、同時に
蓄電装置も設置して充放電することがある。太陽光発電装置が発電を行っている時間帯に
蓄電装置の充電量が満杯であった場合に家庭内で電力を消費している機器の稼動を停止す
ると家庭内の電力使用量が減って、家庭から配電系統への電力の逆潮流が発生するが、こ
のとき太陽光発電装置からの発電量が抑制される場合がある。
Conventionally, when installing a natural energy power generation device, for example, a solar power generation device in a house, a power storage device is also installed and charged and discharged at the same time. When the amount of charge of the power storage device is full during the time when the photovoltaic power generator is generating power, if the operation of the device that consumes power in the home is stopped, the amount of power used in the home decreases, Although a reverse power flow from the home to the distribution system occurs, the amount of power generated from the solar power generation device may be suppressed at this time.
これは、家庭における太陽光発電装置の発電量が、電力使用量を上回ると商用電源側の
配電系統へ逆潮流させる方法を取っているが、逆潮流が順調に行われるためには家庭側の
電圧が配電系統側の電圧を上回っていなければならないため、近隣の多くの家庭が一斉に
逆潮流を行うなどにより配電系統側の電圧が上昇すると逆潮流を行うことが困難になり、
太陽光発電装置のパワーコンディショナが発電量そのものを抑制するためである。
This is a method of causing a reverse power flow to the distribution system on the commercial power supply side when the amount of power generated by the photovoltaic power generation device at home exceeds the amount of power used. Since the voltage must exceed the voltage on the distribution system side, it becomes difficult to perform the reverse power flow when the voltage on the distribution system side rises due to the reverse flow of many nearby households at the same time,
This is because the power conditioner of the solar power generation device suppresses the power generation amount itself.
また、蓄電装置へ充電を行う際にはその時点での充電量を考慮していないため、太陽光
発電装置の発電電力が家庭内の負荷全体の電力使用量を越える場合、蓄電装置の充電量が
満杯になって、それ以上蓄電することができずに逆潮流が発生する場合もある。この場合
も同様にして、太陽光発電装置の発電量が抑制されて太陽光のエネルギーの有効活用にな
らないおそれがある。また、計画的に充電量を算出していないため、安価な商用電源の利
用が効率的にならない場合もある。
In addition, when charging the power storage device, the amount of charge at that time is not taken into consideration, so if the power generated by the solar power generation device exceeds the power consumption of the entire household load, the power storage device charge amount May become full, and no more electricity can be stored, causing reverse power flow. In this case as well, there is a possibility that the amount of power generated by the solar power generation device is suppressed and the solar energy is not effectively used. Moreover, since the charge amount is not calculated in a planned manner, the use of an inexpensive commercial power source may not be efficient.
そこで、前記課題を解決するために、太陽光発電装置の発電量が最大となるように、ま
た、安価な深夜電力の利用量を増加させることによって、省エネルギー性と経済性の両方
を向上させる負荷制御装置が考えられている。
Therefore, in order to solve the above-described problem, a load that improves both energy saving and economic efficiency by maximizing the amount of power generated by the photovoltaic power generation apparatus and increasing the amount of inexpensive late-night power used. A control device is considered.
この負荷制御装置は、過去の履歴に基づいた太陽光発電装置の発電量の予測値である予
測発電量を算出する発電予測部と、過去の履歴に基づいた電力の使用量の予測値である予
測負荷量を算出する負荷予測部と、予測負荷量と機器の稼動時刻の変更によって深夜に蓄
電装置に蓄える電力量を算出する充電量算出部と、蓄電装置に蓄えられている所定時間間
隔毎の電力量の推移である蓄電量カーブと蓄えた電力の所定時間間隔毎の料金単価である
蓄電単価カーブを算出する蓄電単価算出部と、予測発電量と予測負荷量と蓄電量カーブと
蓄電単価カーブと商用電源の料金とから１日の電力料金を算出する料金算出部と、算出し
た充電量に基づいて蓄電装置の制御を行う蓄電制御部と、算出した機器の稼動スケジュー
ルに基づいて機器の制御を行う機器制御部とを有し、最も省エネルギーと省コストとなる
ように、蓄電装置と機器の制御を行う。
これにより、太陽光発電装置の予測発電量が予測電力使用量を超える時間に、機器の稼
動時刻を制御することによって太陽光発電の余剰電力を削減し、機器の稼動時刻変更によ
って削減される余剰発電量と、予測電力負荷と蓄電装置内の残存電力量から、充電すべき
深夜電力量である充電量を算出し、蓄電装置の充電量を制御することによって、太陽光発
電装置の発電量を最大にし、かつ、安価な深夜電力の使用量を増やす。
The load control device includes a power generation prediction unit that calculates a predicted power generation amount that is a predicted value of the power generation amount of the solar power generation device based on a past history, and a predicted value of power usage based on the past history. A load prediction unit that calculates a predicted load amount, a charge amount calculation unit that calculates an amount of power stored in the power storage device at midnight by changing the predicted load amount and the operation time of the device, and every predetermined time interval stored in the power storage device Storage unit price calculation unit that calculates a storage amount curve that is a transition of the amount of power and a storage unit price curve that is a unit price of the stored power at a predetermined time interval; a predicted power generation amount, a predicted load amount, a storage amount curve, and a storage unit price A charge calculation unit that calculates a daily power charge from the curve and the charge of the commercial power supply, a power storage control unit that controls the power storage device based on the calculated charge amount, and a device operation based on the calculated device operation schedule Do control And a vessel control unit, such that the most energy-saving and cost saving, and controls the power storage device and the device.
As a result, the surplus power of solar power generation is reduced by controlling the operation time of the device during the time when the predicted power generation amount of the photovoltaic power generation device exceeds the predicted power consumption, and the surplus that is reduced by changing the operation time of the device By calculating the amount of power that is the amount of late-night power to be charged from the power generation amount, the predicted power load and the remaining power amount in the power storage device, and controlling the power storage device charge amount, Maximize and increase the use of cheap late-night power.
これにより、太陽光発電装置から得られる自然エネルギーを効率的に利用し、安価な深
夜電力の利用料を増加させることができるため、省エネルギー性を高めると同時に、経済
性も高めることが可能である。
As a result, it is possible to efficiently use natural energy obtained from the solar power generation device and increase the usage fee of inexpensive late-night power, so that it is possible to improve the energy saving and at the same time improve the economy. .
上述した負荷制御装置においては、過去の履歴に基づいた太陽光発電予測発電量と、過
去の履歴に基づいた予測負荷量を用いて、蓄電装置の充電量や機器の稼動スケジュールを
あらかじめ決め、それにしたがって蓄電装置を制御する。
In the load control device described above, the amount of power storage device charge and the operation schedule of the device are determined in advance using the predicted photovoltaic power generation amount based on the past history and the predicted load amount based on the past history. Therefore, the power storage device is controlled.
しかし、実際の電力系統では、逆潮流を阻害するほど配電電圧が上昇するか否か、また
、家電機器の実際に運用があらかじめ想定したとおりか否か、天気が予報どおりになるか
どうかなど、あらかじめ決めたスケジューリング制御では対応できない事象が多々存在す
る。そのために、スケジューリングされた蓄電計画が、太陽光発電を最も有効に使うもの
とは限らない。
However, in the actual power system, whether or not the distribution voltage rises so as to inhibit reverse power flow, whether or not the operation of home appliances is actually assumed in advance, whether the weather is as predicted, etc. There are many events that cannot be handled by the predetermined scheduling control. Therefore, a scheduled power storage plan is not always the one that uses solar power most effectively.
本発明の実施形態は、自然エネルギー発電装置の出力抑制を回避し、自然エネルギー発
電装置による発電量の利用効率を向上させることのできる負荷制御装置を得ることを目的
とする。
An object of the embodiment of the present invention is to obtain a load control device that can avoid the output suppression of the natural energy power generation device and can improve the utilization efficiency of the amount of power generated by the natural energy power generation device.
本発明の実施形態における負荷制御装置は、電力を充電する蓄電手段と当該蓄電手段よ
り電力の消費応答が遅い負荷手段とを制御する。また、前記蓄電手段および前記負荷手段
に接続する自然エネルギー発電手段からの出力に関する
値が第１の閾値を上回る場合、前記蓄電手段および前記負荷手段の負荷電力
を増加させた後、事前に設定された時間経過後に前記蓄電手段の負荷電力を減少さ
せる制御手段を備える。
The load control device according to the embodiment of the present invention controls a power storage unit that charges power and a load unit whose power consumption response is slower than that of the power storage unit. Further, when a value related to the output from the natural energy power generation means connected to the power storage means and the load means exceeds a first threshold, the load power of the power storage means and the load means is increased and then set in advance. Control means for reducing the load power of the power storage means after a lapse of time.
以下、本発明係る実施形態における家庭用エネルギー管理システムについて、図面を参
照して説明する。
Hereinafter, a household energy management system according to an embodiment of the present invention will be described with reference to the drawings.
（第１の実施形態）
（構成）
第１の実施形態の家庭用エネルギー管理システムの構成について図１を用いて説明する
。本実施形態の家庭用エネルギー管理システムは、太陽光発電装置１、蓄電装置２、貯湯
式給湯器３、電圧計測装置５、および負荷制御装置６を備える。
(First embodiment)
(Constitution)
The configuration of the home energy management system according to the first embodiment will be described with reference to FIG. The home energy management system of this embodiment includes a solar power generation device 1, a power storage device 2, a hot water storage type hot water heater 3, a voltage measurement device 5, and a load control device 6.
太陽光発電装置１は、自然エネルギー発電装置の一つであり、商用系統７（商用電源、
送電線、配電線等を含む）と接続点４にて接続し、発電した電力は商用系統７に送電する
。さらに、図示しないが、太陽光発電装置１が発電した直流電力を交流単相の電力に変換
するパワーコンディショナー（以下、ＰＣＳと呼ぶ）が設けられ、このＰＣＳには商用系
統７の保護回路が設けられており、出力電圧が所定の電圧範囲１０１Ｖ±６Ｖの上限であ
る１０７Ｖを逸脱した時に出力を停止する機能を有している。
The solar power generation device 1 is one of natural energy power generation devices and includes a commercial system 7 (commercial power source,
Power transmission lines, distribution lines and the like) are connected at the connection point 4, and the generated power is transmitted to the commercial system 7. Further, although not shown, a power conditioner (hereinafter referred to as PCS) for converting the DC power generated by the solar power generation device 1 into AC single-phase power is provided, and a protection circuit for the commercial system 7 is provided in the PCS. And has a function of stopping output when the output voltage deviates from 107 V, which is the upper limit of a predetermined voltage range 101 V ± 6 V.
蓄電装置２は、例えば蓄電池、フライホイール、キャパシタ、ＳＭＥＳ等であり、電気
エネルギーを蓄え、任意のタイミングで蓄えた電気エネルギーを出力することが可能であ
る。この蓄電装置２は商用系統７と接続し、充電時は商用系統７から電力を供給され、放
電時は商用系統７に電力を放出する。また、蓄電装置２は負荷制御装置６と接続し、負荷
制御装置６から蓄電装置充電制御信号を受信した場合に充電し、蓄電装置停止制御信号を
受信した場合は充電を停止する。
The power storage device 2 is, for example, a storage battery, flywheel, capacitor, SMES, or the like, and can store electrical energy and output the stored electrical energy at an arbitrary timing. The power storage device 2 is connected to the commercial system 7 and is supplied with electric power from the commercial system 7 during charging, and discharges electric power to the commercial system 7 during discharging. In addition, the power storage device 2 is connected to the load control device 6 and is charged when a power storage device charge control signal is received from the load control device 6, and is stopped when a power storage device stop control signal is received.
さらに、図示しないが、蓄電装置２の充放電を制御するＰＣＳが設けられ、このＰＣＳ
には発電装置の発熱を考慮しながら充放電を制御する機能を有している。このＰＣＳによ
る制御はインバータ制御であるため、蓄電装置充電制御信号を受信すると、ほぼ遅れなく
充電を開始し、蓄電装置停止制御信号を受信すると、ほぼ遅れなく充電を停止する。
Further, although not shown, a PCS for controlling charging / discharging of the power storage device 2 is provided.
Has a function of controlling charging / discharging while considering the heat generation of the power generation device. Since control by the PCS is inverter control, charging is started almost without delay when a power storage device charging control signal is received, and charging is stopped almost without delay when a power storage device stop control signal is received.
貯湯式給湯器３は、ヒートポンプ型の給湯器であり、ヒートポンプを使用して温度が低
い水を温めて貯湯しておき、居住者による貯湯されている湯の任意のタイミングでの使用
を可能とするものである。この貯湯式給湯器３は、商用系統７と接続し、貯湯時（水を温
める時）は商用系統７から供給される電力にて水を温める。また、貯湯式給湯器３は負荷
制御装置６と接続し、負荷制御装置６から貯湯開始制御信号を受信した場合に貯湯を開始
し、貯湯停止制御信号を受信した場合に貯湯を停止する。
The hot water storage type water heater 3 is a heat pump type hot water heater, which uses a heat pump to warm and store hot water at a low temperature so that the resident can use the hot water stored at any timing. To do. This hot water storage type water heater 3 is connected to a commercial system 7 and warms water with electric power supplied from the commercial system 7 during hot water storage (when warming water). The hot water storage type water heater 3 is connected to the load control device 6, starts hot water storage when receiving a hot water storage start control signal from the load control device 6, and stops hot water storage when receiving a hot water storage stop control signal.
しかし、この貯湯式給湯器３が負荷制御装置６から貯湯開始制御信号を受信し、貯湯を
開始した場合でも、ヒートポンプの保護のため、貯湯開始から５分程度の保護運転が行わ
れる。そのため、この保護運転時間経過後に全負荷運転（フルパワー運転）が行われる。
However, even when this hot water storage type water heater 3 receives a hot water storage start control signal from the load control device 6 and starts hot water storage, a protection operation of about 5 minutes from the start of hot water storage is performed to protect the heat pump. Therefore, full load operation (full power operation) is performed after the protection operation time has elapsed.
電圧計測装置５は、太陽光発電装置１と接続点４との間における系統電圧Ｖ０を計測し
ており、その計測結果を負荷制御装置６に出力する。
The voltage measuring device 5 measures the
負荷制御装置６は、電圧比較手段８、給湯器起動時刻算出手段９、および機器制御手段
１０を備える。
The load control device 6 includes a voltage comparison unit 8, a water heater start time calculation unit 9, and a device control unit 10.
電圧比較手段８は、電圧計測装置５により計測された系統電圧Ｖ０と、事前に設定され
た第１の基準電圧Ｖ１および第２の基準電圧Ｖ２とを比較する。系統電圧Ｖ０が事前に設
定された第１の基準電圧値Ｖ１を超えると、給湯器起動時刻算出手段９に対して、蓄電装
置２の充電を開始させるための蓄電装置充電信号と、貯湯式給湯器３の貯湯を開始させる
ための貯湯開始信号を出力する。系統電圧Ｖ０が事前に設定された第２の基準電圧Ｖ２を
下回ると、給湯器起動時刻算出手段９に対して、貯湯式給湯器３を停止させるための貯湯
停止信号を出力する。ここでの第１の基準電圧Ｖ１は第２の基準電圧Ｖ２より高く設定し
ている。
The voltage comparison means 8 compares the system voltage V0 measured by the voltage measuring device 5 with the first reference voltage V1 and the second reference voltage V2 set in advance. When the system voltage V0 exceeds the first reference voltage value V1 set in advance, the storage device charging signal for starting the charging of the storage device 2 to the hot water heater start time calculating means 9, and the hot water storage type hot water supply The hot water storage start signal for starting the hot water storage of the device 3 is output. When the system voltage V0 falls below the second reference voltage V2 set in advance, a hot water storage stop signal for stopping the hot water storage type water heater 3 is output to the water heater start time calculating means 9. Here, the first reference voltage V1 is set higher than the second reference voltage V2.
給湯器起動時刻算出手段９は、電圧比較手段８から蓄電装置充電信号および貯湯開始信
号を受信した場合は、機器制御手段１０にこの蓄電装置充電信号および貯湯開始信号を受
け渡すと共に、事前に設定された貯湯式給湯器３の保護運転時間待機する。そして、給湯
器起動時刻算出手段９は、蓄電装置充電信号および貯湯開始信号を受け渡した時間から保
護運転時間経過し、貯湯式給湯器３が全負荷運転となったことを確認すると、機器制御手
段１０に対して、蓄電装置２の充電を停止させるための蓄電装置停止信号を出力する。
When the hot water heater activation time calculation means 9 receives the power storage device charging signal and the hot water storage start signal from the voltage comparison means 8, it passes the power storage device charging signal and the hot water storage start signal to the device control means 10 and sets in advance. It waits for the protection operation time of the stored hot water heater 3. Then, when the hot water heater activation time calculation means 9 confirms that the protection operation time has elapsed from the time when the power storage device charging signal and the hot water storage start signal are delivered, and the hot water storage water heater 3 is in full load operation, the equipment control means 10, a power storage device stop signal for stopping the charging of the power storage device 2 is output.
また、給湯器起動時刻算出手段９が電圧比較手段８から貯湯停止信号を受信した場合は
、機器制御手段１０に受信した貯湯停止信号を受け渡す。
When the hot water heater activation time calculation means 9 receives the hot water storage stop signal from the voltage comparison means 8, it passes the received hot water storage stop signal to the device control means 10.
機器制御手段１０は、給湯器起動時刻算出手段９から蓄電装置充電信号を受信した場合
は、蓄電装置２に対して蓄電装置充電制御信号を出力し、蓄電装置停止信号を受信した場
合は、蓄電装置２に対して蓄電装置停止制御信号を出力する。同様に、機器制御手段１０
は、給湯器起動時刻算出手段９から貯湯開始信号を受信した場合は、貯湯式給湯器３に対
して貯湯開始制御信号を出力し、貯湯停止信号を受信した場合は、貯湯式給湯器３に対し
て貯湯停止制御信号を出力する。
The device control means 10 outputs a power storage device charging control signal to the power storage device 2 when receiving the power storage device charging signal from the water heater start time calculating means 9 and stores the power storage device when receiving the power storage device stop signal. A power storage device stop control signal is output to the device 2. Similarly, the device control means 10
When a hot water storage start signal is received from the hot water heater activation time calculation means 9, a hot water storage start control signal is output to the hot water storage hot water heater 3, and when a hot water storage stop signal is received, In response, a hot water storage stop control signal is output.
（作用）
次に、本実施形態の家庭用エネルギー管理システムの動作について図２を用いて説明す
る。図２は、本実施形態の家庭用エネルギー管理システムを用いて蓄電装置２および貯湯
式給湯器３を制御した場合の（ａ）太陽光発電装置１の発電量、（ｂ）電圧計測装置５に
より計測される電圧値、（ｃ）蓄電装置２および貯湯式給湯器３の総負荷電力を示してい
る。
(Function)
Next, operation | movement of the household energy management system of this embodiment is demonstrated using FIG. FIG. 2 shows (a) the amount of power generated by the photovoltaic power generator 1 and (b) the voltage measuring device 5 when the power storage device 2 and the hot water storage hot water heater 3 are controlled using the household energy management system of the present embodiment. The measured voltage value, (c) the total load power of the power storage device 2 and the hot water storage type water heater 3 are shown.
図２（ａ）に示すように、太陽光発電装置１により発電される１日の発電量は、日中に
最大となり、夜間に最小となる。そのため、図２（ｂ）に示すように、電圧計測装置５に
より計測される電圧値は日中に上昇して第１の基準電圧Ｖ１を超えたり、夜間に減少して
第２の基準電圧Ｖ２を下回ったりすることがある。
As shown in FIG. 2A, the daily power generation amount generated by the solar power generation device 1 is maximum during the day and minimum during the night. Therefore, as shown in FIG. 2B, the voltage value measured by the voltage measuring device 5 increases during the day and exceeds the first reference voltage V1, or decreases at night and decreases to the second reference voltage V2. May fall below.
第１の基準電圧Ｖ１を超えたことを電圧比較手段８が検出し、給湯器起動時刻算出手段
９に対して、蓄電装置２の充電を開始させるための蓄電装置充電信号と、貯湯式給湯器３
の貯湯を開始させるための貯湯開始信号を出力する。蓄電装置充電信号および貯湯開始信
号を受信した給湯器起動時刻算出手段９は、機器制御手段１０にこの蓄電装置充電信号お
よび貯湯開始信号を受け渡す。
The voltage comparison means 8 detects that the first reference voltage V1 has been exceeded, and the hot water heater activation time calculation means 9 causes the power storage device charging signal to start charging the power storage device 2 and the hot water storage type water heater. 3
A hot water storage start signal for starting hot water storage is output. Upon receiving the power storage device charging signal and the hot water storage start signal, the water heater start time calculating means 9 delivers the power storage device charging signal and the hot water storage start signal to the device control means 10.
蓄電装置充電信号および貯湯開始信号を受信した機器制御手段１０は、蓄電装置２に蓄
電装置充電制御信号を出力して充電を開始させ、貯湯式給湯器３に貯湯開始制御信号を出
力して貯湯を開始させる。
Receiving the power storage device charging signal and the hot water storage start signal, the device control means 10 outputs a power storage device charging control signal to the power storage device 2 to start charging, and outputs a hot water storage start control signal to the hot water storage type hot water heater 3. To start.
さらに、給湯器起動時刻算出手段９は、蓄電装置充電信号および貯湯開始信号を受け渡
した時間から事前に設定された保護運転時間経過し、貯湯式給湯器３が全負荷運転したこ
とを確認すると、機器制御手段１０に対して、蓄電装置２の充電を停止させるための蓄電
装置停止信号を出力する。蓄電装置停止信号を受信した機器制御手段１０は、蓄電装置２
に蓄電装置停止制御信号を出力して充電を停止させる。
Furthermore, when the hot water heater activation time calculation means 9 confirms that the preset protection operation time has elapsed from the time when the power storage device charging signal and the hot water storage start signal are delivered, the hot water storage water heater 3 has been fully loaded, A power storage device stop signal for stopping the charging of the power storage device 2 is output to the device control means 10. The device control means 10 that has received the power storage device stop signal receives the power storage device 2
To output a power storage device stop control signal to stop charging.
その後、太陽光発電装置１の発電量の減少に伴い、電圧計測装置５により計測される電
圧値が第２の基準電圧Ｖ２を下回ったことを電圧比較手段８が検出し、給湯器起動時刻算
出手段９に対して貯湯停止信号を出力する。貯湯停止信号を受信した給湯器起動時刻算出
手段９は、機器制御手段１０に対して貯湯停止信号を受け渡す。貯湯停止信号を受信した
機器制御手段１０は、貯湯式給湯器３に貯湯停止信号を出力し、貯湯式給湯器３を停止さ
せることで貯湯は停止する。
Thereafter, the voltage comparison means 8 detects that the voltage value measured by the voltage measuring device 5 has fallen below the second reference voltage V2 as the amount of power generated by the photovoltaic power generator 1 decreases, and calculates the hot water heater start time. A hot water storage stop signal is output to the means 9. Upon receiving the hot water storage stop signal, the hot water heater activation time calculation means 9 delivers the hot water storage stop signal to the device control means 10. The device control means 10 that has received the hot water storage stop signal outputs a hot water storage stop signal to the hot water storage type hot water heater 3 and stops the hot water storage type hot water heater 3 to stop the hot water storage.
（効果）
本実施形態では、太陽光発電装置１の出力抑制を回避し、太陽光発電装置１による発電
量の利用効率を向上させることが可能である。
(effect)
In this embodiment, it is possible to avoid the output suppression of the solar power generation device 1 and improve the utilization efficiency of the power generation amount by the solar power generation device 1.
この発電量の利用効率の向上について、以下に説明する。蓄電装置２を用いず、電圧計
測装置５により計測される電圧値が第１の基準電圧Ｖ１を超えた場合に貯湯式給湯器３の
貯湯を開始し、第２の基準電圧Ｖ２を下回った場合に貯湯を停止した場合について図３を
用いて説明する。図３（ａ）は、太陽光発電装置１の発電量、図３（ｂ）電圧計測装置５
により計測される電圧値、図３（ｃ）貯湯式給湯器３の負荷電力を示している。
The improvement of the power generation utilization efficiency will be described below. When the voltage value measured by the voltage measuring device 5 exceeds the first reference voltage V1 without using the power storage device 2, the hot water storage water heater 3 starts hot water storage and falls below the second reference voltage V2. The case where hot water storage is stopped will be described with reference to FIG. FIG. 3A shows the amount of power generated by the solar power generation device 1, and FIG. 3B shows the voltage measurement device 5.
FIG. 3C shows the load power measured by the hot water storage water heater 3.
電圧計測装置５により計測される電圧値が第１の基準電圧Ｖ１を超えた場合、貯湯式給
湯器３の貯湯を開始するが、貯湯開始後は５分程度の保護運転期間が設定されており、電
圧値が即応して下がらない。そのため、保護運転期間に電圧値がＰＣＳの電圧範囲の上限
である１０７Ｖを超えると太陽光発電装置１による発電を停止させていた。
When the voltage value measured by the voltage measuring device 5 exceeds the first reference voltage V1, hot water storage of the hot water storage type water heater 3 is started, but a protection operation period of about 5 minutes is set after the start of hot water storage. The voltage value does not decrease immediately. Therefore, when the voltage value exceeds 107 V, which is the upper limit of the PCS voltage range, during the protection operation period, power generation by the solar power generation device 1 is stopped.
つまり、本実施形態では、貯湯式給湯器３に加えて、充電動作の応答が速い蓄電装置２
を起動・停止を制御しているため、太陽光発電装置１を停止させ、出力抑制する必要がな
いため、発電量の利用効率を向上させることが可能である。
That is, in this embodiment, in addition to the hot water storage type water heater 3, the power storage device 2 having a quick response to the charging operation.
Since the start / stop is controlled, there is no need to stop the solar power generation device 1 and suppress the output, so that it is possible to improve the utilization efficiency of the power generation amount.
また、貯湯式給湯器３が全負荷運転を開始すると、蓄電装置２の充電を停止するため、
蓄電装置２の蓄電量が満杯になることが少なく、蓄電装置２に対する負荷を抑えることが
可能である。
In addition, when the hot water storage water heater 3 starts full load operation, charging of the power storage device 2 is stopped.
The power storage amount of the power storage device 2 is rarely full, and the load on the power storage device 2 can be suppressed.
なお、本実施形態の電圧比較手段８は、蓄電装置停止信号および貯湯停止信号を給湯器
起動時刻算出手段９に出力していたが、直接、蓄電装置２および貯湯式給湯器３に対して
出力してもよい。この時、蓄電装置停止信号を受信した蓄電装置２は充電を停止し、貯湯
停止信号を受信した貯湯式給湯器３は貯湯を停止する。
The voltage comparison unit 8 of the present embodiment outputs the power storage device stop signal and the hot water storage stop signal to the water heater start time calculation unit 9, but directly outputs them to the power storage device 2 and the hot water storage type water heater 3. May be. At this time, the power storage device 2 that has received the power storage device stop signal stops charging, and the hot water storage type water heater 3 that has received the hot water storage stop signal stops hot water storage.
また、本実施形態の機器制御手段１０は、給湯器起動時刻算出手段９から蓄電装置充電
信号および蓄電装置停止信号を受信し、蓄電装置２に対して蓄電装置充電制御信号および
蓄電装置停止制御信号を出力する。また機器制御手段１０は、給湯器起動時刻算出手段９
から貯湯開始信号および貯湯停止信号を受信し、貯湯式給湯器３に対して貯湯開始信号お
よび貯湯停止信号を出力している。しかし、給湯器起動時刻算出手段９から直接、蓄電装
置２に対して蓄電装置充電信号および蓄電装置停止信号、貯湯式給湯器３に対して貯湯開
始信号および貯湯停止信号を出力してもよい。
In addition, the device control unit 10 of the present embodiment receives the power storage device charging signal and the power storage device stop signal from the water heater start time calculating unit 9, and stores the power storage device charging control signal and the power storage device stop control signal for the power storage device 2. Is output. The device control means 10 also includes a hot water heater start time calculation means 9.
The hot water storage start signal and the hot water storage stop signal are received from the hot water storage hot water heater 3 and the hot water storage start signal and the hot water storage stop signal are output. However, the storage device charging signal and the storage device stop signal may be directly output to the storage device 2, and the hot water storage start signal and the hot water storage stop signal may be output to the hot water storage type water heater 3 directly from the hot water heater activation time calculation unit 9.
この時、蓄電装置２は、蓄電装置充電信号を受信した場合は充電を開始し、蓄電装置停
止信号を受信した場合は充電を停止する。同様に、貯湯式給湯器３は、貯湯開始信号を受
信した場合は貯湯を開始し、貯湯停止信号を受信した場合は貯湯を停止する。
At this time, the power storage device 2 starts charging when the power storage device charging signal is received, and stops charging when the power storage device stop signal is received. Similarly, the hot water storage type water heater 3 starts hot water storage when it receives a hot water start signal, and stops hot water storage when it receives a hot water stop signal.
また、本実施形態の給湯器起動時刻算出手段９は、機器制御手段１０に蓄電装置充電信
号および貯湯開始信号を出力した時間から、事前に設定された保護運転時間を待機し、蓄
電装置停止信号を機器制御手段１０に対して出力している。しかし、保護運転時間終了直
後に蓄電装置２を停止させるための蓄電装置停止信号を出力する必要はなく、保護運転時
間終了後から蓄電装置２の蓄電量が満杯になる前であれば、同様の効果を得ることが可能
である。
In addition, the hot water heater activation time calculation unit 9 of the present embodiment waits for a preset protection operation time from the time when the power storage device charging signal and the hot water storage start signal are output to the device control unit 10, and the power storage device stop signal Is output to the device control means 10. However, it is not necessary to output a power storage device stop signal for stopping the power storage device 2 immediately after the end of the protection operation time, and if the storage amount of the power storage device 2 is not full after the end of the protection operation time, the same An effect can be obtained.
また、貯湯式給湯器３の保護運転時間は、起動時の外気温、気圧、等の変化パラメータ
により変化があるため、給湯器起動時刻算出手段９は、これらの現在の変化パラメータを
図示しない温度計、気圧計から受信し、受信した変化パラメータに基づいて、事前に設定
された保護運転時間の調整を行うことによって、より正確な制御を可能とする。
Moreover, since the protection operation time of the hot water storage type hot water heater 3 varies depending on the change parameters such as the outside air temperature and the atmospheric pressure at the time of start-up, the water heater start time calculation means 9 does not show these current change parameters at a temperature not shown. More accurate control is possible by adjusting the protection operation time set in advance based on the change parameter received from the gauge and barometer.
（第２の実施形態）
次に、本発明に係る第２の実施形態について図４を用いて説明する。なお第１の実施形
態と同一の構成には同一の符号を付し、重複する説明は省略する。第１の実施形態との構
成の違いは、給湯器起動時刻算出手段９に替えて、充電可能時間算出手段１１を有してい
ることである。
(Second Embodiment)
Next, a second embodiment according to the present invention will be described with reference to FIG. In addition, the same code | symbol is attached | subjected to the structure same as 1st Embodiment, and the overlapping description is abbreviate | omitted. The difference in configuration from the first embodiment is that it has a rechargeable time calculation means 11 instead of the hot water heater activation time calculation means 9.
また、電圧比較手段８は、電圧計測装置５により計測された系統電圧Ｖ０と第１の基準
電圧Ｖ１および第２の基準電圧Ｖ２を比較する。系統電圧Ｖ０が事前に設定された第１の
基準電圧値Ｖ１を超えると、充電可能時間算出手段１１に対して、蓄電装置２の充電を開
始させるための蓄電装置充電信号を出力する。系統電圧Ｖ０が事前に設定された第２の基
準電圧Ｖ２を下回ると、充電可能時間算出手段１１に対して、貯湯式給湯器３を停止させ
るための貯湯停止信号を出力する。
Further, the voltage comparison means 8 compares the system voltage V0 measured by the voltage measuring device 5 with the first reference voltage V1 and the second reference voltage V2. When the system voltage V0 exceeds a preset first reference voltage value V1, a chargeable device charge signal for starting charging of the power storage device 2 is output to the chargeable time calculation means 11. When the system voltage V0 falls below the second reference voltage V2 set in advance, a hot water storage stop signal for stopping the hot water storage type water heater 3 is output to the chargeable time calculation means 11.
充電可能時間算出手段１１は、電圧比較手段８から蓄電装置充電信号を受信した場合は
、機器制御手段１０にこの蓄電装置充電信号を受け渡すと共に、（１）式により貯湯待機
時間を計算する。この貯湯待機時間は、充電可能時間算出手段１１が機器制御手段１０に
蓄電装置充電信号を受け渡した時間から、貯湯式給湯器３が貯湯を開始するための貯湯開
始信号を出力するまでの待機時間である。蓄電装置充電信号を受け渡した時間から貯湯待
機時刻経過後に貯湯開始信号を出力することで、蓄電装置２の蓄電量が満杯になるタイミ
ングにて貯湯式給湯器３が全負荷運転させることができる。
When the chargeable time calculation means 11 receives the power storage device charge signal from the voltage comparison means 8, it passes this power storage device charge signal to the device control means 10 and calculates the hot water storage standby time by the equation (1). This hot water storage standby time is the standby time from when the chargeable time calculating means 11 delivers the power storage device charging signal to the device control means 10 until the hot water storage type water heater 3 outputs a hot water start signal for starting hot water storage. It is. By outputting the hot water storage start signal after the hot water storage standby time has elapsed from the time when the power storage device charging signal is delivered, the hot water storage type hot water heater 3 can be fully loaded at the timing when the amount of power stored in the power storage device 2 is full.
貯湯待機時間＝（蓄電容量−現在蓄電量）／（充電電力値）−（保護運転時間）・・・
（１）式
ここで、蓄電容量は蓄電装置２の蓄電量の上限値であり、現在蓄電量は蓄電装置２の現
在の蓄電量であり、充電電力値は単位時間当たりの充電量である。
Hot water storage standby time = (power storage capacity−current power storage amount) / (charged power value) − (protection operation time)...
Here, the storage capacity is the upper limit value of the storage amount of the storage device 2, the current storage amount is the current storage amount of the storage device 2, and the charge power value is the charge amount per unit time.
そして、充電可能時間算出手段１１は機器制御手段１０に蓄電装置充電信号を受け渡し
た時間から、貯湯待機時間経過したことを確認すると、機器制御手段１０に対して、貯湯
式給湯器３の貯湯を開始させるための貯湯開始信号を出力する。
When the chargeable time calculation means 11 confirms that the hot water storage standby time has elapsed from the time when the power storage device charging signal is delivered to the equipment control means 10, the hot water storage hot water heater 3 is stored in the equipment control means 10. A hot water storage start signal for starting is output.
また、電圧比較手段８から貯湯停止信号を受信した場合、充電可能時間算出手段１１は
、機器制御手段１０に受信した蓄電装置停止信号と貯湯停止信号を受け渡す。
When the hot water storage stop signal is received from the voltage comparison unit 8, the chargeable time calculation unit 11 passes the received power storage device stop signal and hot water storage stop signal to the device control unit 10.
（作用）
次に、本実施形態の家庭用エネルギー管理システムの動作について図５を用いて説明す
る。図５は、本実施形態の家庭用エネルギー管理システムを用いて蓄電装置２および貯湯
式給湯器３を制御した場合の（ａ）太陽光発電装置１の発電量、（ｂ）電圧計測装置５に
より計測される電圧値、（ｃ）蓄電装置２および貯湯式給湯器３の総負荷電力を示してい
る。
(Function)
Next, operation | movement of the household energy management system of this embodiment is demonstrated using FIG. FIG. 5 shows (a) the amount of power generated by the photovoltaic power generator 1 and (b) the voltage measuring device 5 when the power storage device 2 and the hot water storage hot water heater 3 are controlled using the household energy management system of the present embodiment. The measured voltage value, (c) the total load power of the power storage device 2 and the hot water storage type water heater 3 are shown.
第１の実施形態と同様に、図５（ａ）太陽光発電装置１により発電される１日の発電量
は、日中に最大となり、夜間に最小となる。そのため、図５（ｂ）に示すように、電圧計
測装置５により計測される電圧値は日中に上昇して第１の基準電圧Ｖ１を超えたり、夜間
に減少して第２の基準電圧Ｖ２を下回ったりすることがある。
As in the first embodiment, the daily power generation amount generated by the solar power generation device 1 in FIG. 5A is maximum during the day and minimum during the night. Therefore, as shown in FIG. 5B, the voltage value measured by the voltage measuring device 5 increases during the day and exceeds the first reference voltage V1, or decreases at night and decreases to the second reference voltage V2. May fall below.
第１の基準電圧Ｖ１を超えたことを電圧比較手段８が検出し、充電可能時間算出手段１
１に対して、蓄電装置２の充電を開始させるための蓄電装置充電信号を出力する。蓄電装
置充電信号を受信した充電可能時間算出手段１１は、機器制御手段１０にこの蓄電装置充
電信号を受け渡す。
The voltage comparison means 8 detects that the first reference voltage V1 has been exceeded, and the chargeable time calculation means 1
1, a power storage device charging signal for starting charging of the power storage device 2 is output. The chargeable time calculation unit 11 that has received the power storage device charging signal delivers the power storage device charging signal to the device control unit 10.
蓄電装置充電信号を受信した機器制御手段１０は、蓄電装置２に蓄電装置充電制御信号
を出力し、蓄電装置２を起動させることで充電を開始する。
The device control means 10 that has received the power storage device charging signal outputs a power storage device charging control signal to the power storage device 2 and starts the power storage device 2 to start charging.
さらに、充電可能時間算出手段１１は、機器制御手段１０に蓄電装置充電信号を受け渡
した時間から貯湯待機時間経過したことを確認すると、機器制御手段１０に対して、貯湯
式給湯器３の充電を開始させるための貯湯開始信号を出力する。貯湯開始信号を受信した
機器制御手段１０は、貯湯式給湯器３に貯湯開始制御信号を出力し、貯湯式給湯器３を起
動させることで貯湯を開始する。その後、蓄電装置２の蓄電量が満杯になった場合、蓄電
装置２は停止する。
Further, when the chargeable time calculation means 11 confirms that the hot water storage standby time has elapsed from the time when the power storage device charging signal is delivered to the device control means 10, the charge control device 10 charges the hot water storage type water heater 3 to the device control means 10. A hot water storage start signal for starting is output. The device control means 10 that has received the hot water storage start signal outputs a hot water storage start control signal to the hot water storage type water heater 3 and starts the hot water storage type water heater 3 to start hot water storage. Thereafter, when the amount of power stored in power storage device 2 becomes full, power storage device 2 stops.
さらに、太陽光発電装置１の発電量の減少に伴い、電圧計測装置５により計測される電
圧値が第２の基準電圧Ｖ２を下回ったことを電圧比較手段８が検出し、充電可能時間算出
手段１１に対して貯湯停止信号を出力する。貯湯停止信号を受信した給湯器起動時刻算出
手段９は、機器制御手段１０に対して貯湯停止信号を受け渡す。貯湯停止信号を受信した
機器制御手段１０は、貯湯式給湯器３に貯湯停止制御信号を出力し、貯湯式給湯器３の貯
湯を停止させる。
Further, the voltage comparison means 8 detects that the voltage value measured by the voltage measurement device 5 has fallen below the second reference voltage V2 as the amount of power generated by the solar power generation device 1 decreases, and the chargeable time calculation means. 11 outputs a hot water storage stop signal. Upon receiving the hot water storage stop signal, the hot water heater activation time calculation means 9 delivers the hot water storage stop signal to the device control means 10. The device control means 10 that has received the hot water storage stop signal outputs a hot water storage stop control signal to the hot water storage type hot water heater 3 and stops the hot water storage of the hot water storage type water heater 3.
（効果）
本実施形態では、貯湯式給湯器３に加えて、充電動作の応答が速い蓄電装置２の起動・
停止を制御しているため、太陽光発電装置１を停止させ、出力抑制する必要がないため、
発電量の利用効率を向上させることが可能である。
(effect)
In the present embodiment, in addition to the hot water storage type water heater 3, the start-up and
Since the stop is controlled, it is not necessary to stop the solar power generation device 1 and suppress the output.
It is possible to improve the utilization efficiency of the power generation amount.
なお、本実施形態の充電可能時間算出手段１１は、蓄電装置２の蓄電量が満杯になるタ
イミングにて貯湯式給湯器３の保護運転時間が終了して全負荷運転を開始するように、機
器制御手段１０に対して蓄電開始信号を出力した時間から貯湯待機時間経過後に、貯湯開
始信号を出力している。しかし、蓄電装置２の蓄電量が満杯になることを防ぐ場合は、貯
湯待機時間を（２）式で算出し、保護運転時間が終了するタイミングにて蓄電装置２を停
止させるための蓄電装置停止信号を充電可能時間算出手段１１が機器制御手段１０に出力
するとよい。（２）式は、蓄電装置２の上限蓄電量の８０％まで達するタイミングにて、
貯湯式給湯器３が全負荷運転を開始し、蓄電装置２が停止する場合の貯湯待機時間を示し
ている。
Note that the chargeable time calculation unit 11 of the present embodiment is configured so that the protection operation time of the hot water storage type water heater 3 ends and the full load operation starts at the timing when the amount of power stored in the power storage device 2 becomes full. The hot water storage start signal is output after the hot water storage waiting time has elapsed from the time when the power storage start signal is output to the control means 10. However, in order to prevent the power storage amount of power storage device 2 from becoming full, the hot water storage standby time is calculated using equation (2), and the power storage device is stopped to stop power storage device 2 at the timing when the protection operation time ends. The chargeable time calculation unit 11 may output the signal to the device control unit 10. The expression (2) is calculated at a timing of reaching 80% of the upper limit storage amount of the storage device 2.
A hot water storage standby time when the hot water storage type water heater 3 starts full load operation and the power storage device 2 stops is shown.
貯湯待機時間＝（蓄電容量×０．８−現在蓄電量）／（充電電力値）−（保護運転時間
）・・・（２）式
ここでの「（蓄電容量×０．８−現在蓄電量）／（充電電力値）」は、蓄電装置２の現
在の蓄電量が、事前に設定された蓄電量（ここでは上限蓄電量の８０％）になるまでの時
間を示す設定蓄電量時間と呼んでいる。
Hot water storage standby time = (power storage capacity × 0.8−current power storage amount) / (charged electric power value) − (protective operation time) (2) equation where “(power storage capacity × 0.8−current power storage amount ) / (Charged power value) ”is referred to as a set charge amount time indicating the time until the current charge amount of the power storage device 2 reaches a preset charge amount (here, 80% of the upper limit charge amount). It is out.
なお、第１の実施形態および第２の実施形態において、蓄電装置２および貯湯式給湯器
３は単数としているが、複数であっても同様の制御を行うことによって、同様の効果を得
ることが可能である。また、蓄電装置２が例えば蓄電池とフライホイールの種類が異なる
ものであっても、同様の制御にて同様の効果を得ることが可能である。
In addition, in 1st Embodiment and 2nd Embodiment, although the electrical storage apparatus 2 and the hot water storage type water heater 3 are single, even if it is multiple, the same effect can be acquired by performing the same control. Is possible. Moreover, even if the power storage device 2 is different in, for example, the type of storage battery and flywheel, the same effect can be obtained by the same control.
また、太陽光発電装置１の発電量が短期間（数秒単位）で激しく変動する場合には、電
圧計測装置５により計測される電圧値も同様に変化する虞がある。その場合は、電圧比較
手段８は、電圧計測装置５により計測される電圧値のうち、任意の時間帯の平均値または
ＲＭＳ値（Root Mean Square：二乗平均平方根）と、第１の基準電圧Ｖ１および第２の基
準電圧Ｖ２とを比較しても同様の効果を得ることが可能である。
Moreover, when the electric power generation amount of the solar power generation device 1 fluctuates violently in a short period (several seconds), the voltage value measured by the voltage measurement device 5 may change similarly. In that case, the voltage comparison means 8 includes an average value or an RMS value (Root Mean Square) of the arbitrary time zone among the voltage values measured by the voltage measuring device 5, and the first reference voltage V1. The same effect can be obtained by comparing with the second reference voltage V2.
（第３の実施形態）
（構成・作用）
第３の実施形態の家庭用エネルギー管理システムの構成について図６を用いて説明する
。本実施形態の家庭用エネルギー管理システムは、太陽光発電装置１、蓄電装置２、貯湯
式給湯器３、電圧計測装置５、および負荷制御装置６を備える。
(Third embodiment)
(Configuration and action)
The configuration of the home energy management system according to the third embodiment will be described with reference to FIG. The home energy management system of this embodiment includes a solar power generation device 1, a power storage device 2, a hot water storage type hot water heater 3, a voltage measurement device 5, and a load control device 6.
太陽光発電装置１は、自然エネルギー発電装置の一つであり、商用系統７（商用電源、
送電線、配電線等を含む）と接続点４にて接続し、発電した電力は商用系統７に送電する
。さらに、図示しないが、太陽光発電装置１が発電した直流電力を交流単相２００Ｖの電
力に変換するパワーコンディショナー（以下、ＰＣＳと呼ぶ）が設けられ、このＰＣＳに
は商用系統７の保護回路が設けられており、出力電圧が所定の電圧範囲１０１Ｖ±６Ｖを
逸脱した時に出力を停止する機能を有している。
The solar power generation device 1 is one of natural energy power generation devices and includes a commercial system 7 (commercial power source,
Power transmission lines, distribution lines and the like) are connected at the connection point 4, and the generated power is transmitted to the commercial system 7. Further, although not shown, a power conditioner (hereinafter referred to as PCS) for converting the DC power generated by the photovoltaic power generator 1 into AC single-phase 200V power is provided, and this PCS has a protection circuit for the commercial system 7. It has a function of stopping output when the output voltage deviates from a predetermined voltage range 101V ± 6V.
蓄電装置２は、例えば蓄電池、フライホイール、キャパシタ、ＳＭＥＳ等であり、電気
エネルギーを蓄え、任意のタイミングで蓄えた電気エネルギーを出力することが可能であ
る。この蓄電装置２は商用系統７と接続し、充電時は商用系統７から電力を供給され、放
電時は商用系統７に電力を放出する。さらに、図示しないが、蓄電装置２の充放電を制御
するＰＣＳが設けられ、このＰＣＳには発電装置の発熱を考慮しながら充放電を制御する
機能を有している。このＰＣＳによる制御はインバータ制御であるため、ほぼおくれなく
制御に応答する。
The power storage device 2 is, for example, a storage battery, flywheel, capacitor, SMES, or the like, and can store electrical energy and output the stored electrical energy at an arbitrary timing. The power storage device 2 is connected to the commercial system 7 and is supplied with electric power from the commercial system 7 during charging, and discharges electric power to the commercial system 7 during discharging. Further, although not shown, a PCS for controlling charging / discharging of the power storage device 2 is provided, and this PCS has a function of controlling charging / discharging while taking into consideration the heat generation of the power generation device. Since control by this PCS is inverter control, it responds to control almost without leaving.
貯湯式給湯器３は、ヒートポンプ型の給湯器であり、ヒートポンプを使用して温度が低
い水を温めて貯湯しておき、居住者が貯湯されている湯の任意のタイミングでの使用を可
能とするものである。この貯湯式給湯器３は、商用系統７と接続し、貯湯時（水を温める
時）は商用系統７から供給される電力にて水を温める。しかし、この貯湯式給湯器３が貯
湯を開始した場合でも、ヒートポンプの保護のため、貯湯開始から５分程度の保護運転が
行われる。そのため、この保護運転時間経過後に全負荷運転（フルパワー運転）が行われ
る。
The hot water storage type hot water heater 3 is a heat pump type hot water heater, which uses a heat pump to warm and store hot water at a low temperature so that a resident can use the hot water stored at any timing. To do. This hot water storage type water heater 3 is connected to a commercial system 7 and warms water with electric power supplied from the commercial system 7 during hot water storage (when warming water). However, even when the hot water storage type water heater 3 starts hot water storage, a protection operation is performed for about 5 minutes from the start of hot water storage to protect the heat pump. Therefore, full load operation (full power operation) is performed after the protection operation time has elapsed.
電圧計測装置５は、太陽光発電装置１と接続点４との間における系統電圧Ｖ０を計測し
ており、その計測結果を負荷制御装置６に出力する。
The voltage measuring device 5 measures the
負荷制御装置６は、電圧ＤＢ１３、発電ＤＢ１４、電圧予測手段１５、発電予測手段１
６、発電抑制量算出手段１７、蓄電・貯湯必要量算出手段１８、蓄電・貯湯スケジュール
制御手段１９、負荷予測手段２０、負荷ＤＢ２１を備える。
The load control device 6 includes a voltage DB 13, a power generation DB 14, a voltage prediction unit 15, and a power generation prediction unit 1.
6. Power generation suppression amount calculation means 17, storage / hot water storage requirement calculation means 18, storage / hot water schedule control means 19, load prediction means 20, and load DB 21.
電圧ＤＢ１３は、電圧計測装置５により計測される電圧値を記憶し、発電ＤＢ１４は、
太陽光発電装置１の発電量を記憶する。また、負荷ＤＢ２１は、図示しない負荷の電力消
費量を記憶する。
The voltage DB 13 stores the voltage value measured by the voltage measuring device 5, and the power generation DB 14
The power generation amount of the solar power generation device 1 is stored. The load DB 21 stores the power consumption of a load (not shown).
電圧予測手段１５は、電圧ＤＢ１３に記憶された電圧値と、天気予報ＤＢ１２から受信
した天気予報から翌日の電圧値を示す予測電圧値を算出し、発電抑制量算出手段１７に出
力する。
The voltage predicting unit 15 calculates a predicted voltage value indicating the voltage value of the next day from the voltage value stored in the voltage DB 13 and the weather forecast received from the
発電予測手段１６は、発電ＤＢ１４に記憶された発電量と、天気予報ＤＢ１２から受信
した天気予報から翌日の発電量を示す予測発電量を算出し、発電抑制量算出手段１７に出
力する。
The power generation prediction unit 16 calculates a predicted power generation amount indicating the power generation amount of the next day from the power generation amount stored in the power generation DB 14 and the weather forecast received from the
負荷予測手段２０は、負荷ＤＢ２１に記憶された電力消費量と、天気予報ＤＢ１２から
受信した天気予報から翌日の電力消費量を示す予測電力消費量を算出し、発電抑制量算出
手段１７に出力する。
The load prediction unit 20 calculates a predicted power consumption indicating the power consumption of the next day from the power consumption stored in the load DB 21 and the weather forecast received from the
ここでは、電圧予測手段１５、発電予測手段１６、および負荷予測手段２０は、夫々、
翌日の予測電圧値、予測発電量、および予測電力消費量を予測しているが、予測する期間
を示す予測期間は利用者が任意に設定可能である。
Here, the voltage prediction means 15, the power generation prediction means 16, and the load prediction means 20 are respectively
The predicted voltage value, predicted power generation amount, and predicted power consumption amount of the next day are predicted, but the user can arbitrarily set the prediction period indicating the period to be predicted.
発電抑制量算出手段１７は、予測電圧値、予測発電量、および予測電力消費量から、翌
日に電圧計測装置５により計測される電圧値が高すぎるために、太陽光発電装置１の発電
が抑制される時間を示す抑制時間と、その時間帯に太陽光発電装置１により発電される発
電量を示す抑制発電量を算出し、この抑制時間および抑制発電量を蓄電・貯湯必要量算出
手段１８に出力する。
The power generation suppression amount calculation means 17 suppresses power generation of the solar power generation device 1 because the voltage value measured by the voltage measurement device 5 on the next day is too high from the predicted voltage value, the predicted power generation amount, and the predicted power consumption amount. And a suppression power generation amount indicating a power generation amount generated by the solar power generation device 1 during that time period is calculated, and the suppression time and the suppression power generation amount are stored in the storage / hot water storage requirement calculation means 18. Output.
蓄電・貯湯必要量算出手段１８は、蓄電装置２における現在の蓄電量と貯湯式給湯器３
における現在の貯湯量を取得し、取得した現在の蓄電量および現在の貯湯量と、発電抑制
量算出手段１７から受信した抑制時間および抑制発電量とから、蓄電装置２の起動・停止
をスケジューリングした蓄電スケジュールと、貯湯式給湯器３の起動・停止をスケジュー
ルリングした貯湯スケジュールとを作成する。このとき、蓄電スケジュールおよび貯湯ス
ケジュールは、翌日の太陽光発電装置１による発電が抑制されないよう、予測した抑制時
間の前に予測した抑制発電量分を蓄電装置２または貯湯式給湯器３にて消費できるよう、
スケジューリングされている。
The power storage / hot water storage required amount calculation means 18 is configured to calculate the current power storage amount in the power storage device 2 and the hot water storage type water heater 3.
The current storage amount of hot water is acquired, and the start / stop of the power storage device 2 is scheduled from the acquired current storage amount and current storage amount, and the suppression time and suppression generation amount received from the power generation suppression amount calculation means 17 A power storage schedule and a hot water storage schedule in which the hot water storage water heater 3 is started and stopped are created. At this time, in the power storage schedule and the hot water storage schedule, the power generation device 2 or the hot water storage water heater 3 consumes the suppressed power generation amount predicted before the predicted suppression time so that the power generation by the solar power generation device 1 on the next day is not suppressed. Be able to,
Scheduled.
蓄電・貯湯スケジュール制御手段１９は、蓄電・貯湯必要量算出手段１８により作成さ
れた蓄電スケジュールおよび貯湯スケジュールに基づいて、蓄電装置２および貯湯式給湯
器３の起動・停止を制御する。
The power storage / hot water storage schedule control means 19 controls the start / stop of the power storage device 2 and the hot water storage type water heater 3 based on the power storage schedule and the hot water storage schedule created by the power storage / hot water storage requirement calculation means 18.
（効果）
本実施形態では、太陽光発電装置１の出力抑制を回避し、太陽光発電装置１による発電
量の利用効率を向上させることが可能である。
(effect)
In this embodiment, it is possible to avoid the output suppression of the solar power generation device 1 and improve the utilization efficiency of the power generation amount by the solar power generation device 1.
本発明に係る実施形態によれば、自然エネルギー発電装置の出力抑制を回避し、自然エ
ネルギー発電装置による発電量の利用効率を向上させることが可能である。
According to the embodiment of the present invention, it is possible to avoid the output suppression of the natural energy power generation device and improve the utilization efficiency of the power generation amount by the natural energy power generation device.
以上、本発明のいくつかの実施形態について説明したが、これらの実施形態は、例とし
て提示したものであり、発明の範囲を限定することは意図していない。これら新規な実施
形態は、その他の様々な形態で実施されることが可能であり、発明の要旨を逸脱しない範
囲で、種々の省略、置き換え、変更を行うことが出来る。これら実施形態やその変形は、
発明の範囲や要旨に含まれると共に、特許請求の範囲に記載された発明とその均等の範囲
に含まれる。
As mentioned above, although some embodiment of this invention was described, these embodiment was shown as an example and is not intending limiting the range of invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and their variations are
It is included in the scope and gist of the invention, and is included in the invention described in the claims and the equivalent scope thereof.
１…太陽光発電装置
２…蓄電装置
３…貯湯式給湯器
４…接続点
５…電圧計測装置
６…負荷制御装置
７…商用系統
８…電圧比較手段
９…給湯器起動時刻算出手段
１０…機器制御手段
１１…蓄電可能時間算出手段
１２…天気予報ＤＢ
１３…電圧ＤＢ
１４…発電ＤＢ
１５…電圧予測手段
１６…発電予測手段
１７…発電抑制量算出手段
１８…蓄電・貯湯必要量算出手段
１９…蓄電・貯湯スケジュール制御手段
２０…負荷予測手段
２１…負荷ＤＢ
DESCRIPTION OF SYMBOLS 1 ... Solar power generation device 2 ... Power storage device 3 ... Hot water storage type water heater 4 ... Connection point 5 ... Voltage measuring device 6 ... Load control device 7 ... Commercial system 8 ... Voltage comparison means 9 ... Water heater start time calculation means 10 ... Equipment Control unit 11 ... Storage
13 ... Voltage DB
14 ... Power generation DB
DESCRIPTION OF SYMBOLS 15 ... Voltage prediction means 16 ... Electric power generation prediction means 17 ... Electric power generation suppression amount calculation means 18 ... Electric power storage / hot water required amount calculation means 19 ... Electric power storage / hot water schedule control means 20 ... Load prediction means 21 ... Load DB
Claims (5)
る負荷制御装置において、
前記蓄電手段および前記負荷手段に接続する自然エネルギー発電手段からの出力に関す
る値が第１の閾値を上回る場合、前記蓄電手段および前記負荷手段の負荷電力を増加させ
た後、事前に設定された時間経過後に前記蓄電手段の負荷電力を減少させる制御手段を備
える、
負荷制御装置。 In the load control device for controlling the power storage means for charging power and the load means having a slower power consumption response than the power storage means,
When a value related to the output from the natural energy power generation means connected to the power storage means and the load means exceeds a first threshold, a time set in advance after increasing the load power of the power storage means and the load means Comprising control means for reducing the load power of the power storage means after elapse,
Load control device.
低い値の第２の閾値を下回る場合、前記負荷手段の負荷電力を減少させる
請求項１に記載の負荷制御装置。 2. The load control device according to claim 1, wherein the control unit decreases the load power of the load unit when a value related to the output of the natural energy power generation unit is lower than a second threshold value that is lower than the first threshold value. .
する負荷制御装置において、
自然エネルギー発電手段からの出力に関する値が第１の閾値を上回る場合、前記蓄電手
段の充電量を増加させた後、前記蓄電手段の蓄電量が第２の閾値を上回る時間と事前に設
定された時間とに基づいて算出される時間経過後に前記負荷手段の負荷電力を増加させる
制御手段を備える、
負荷制御装置。 In the load control device for controlling the power storage means for charging and discharging power and the load means having a slower power consumption response than the power storage means,
When the value related to the output from the natural energy power generation means exceeds the first threshold, after the amount of charge of the power storage means is increased, the time when the power storage amount of the power storage means exceeds the second threshold is set in advance. Control means for increasing the load power of the load means after elapse of time calculated based on time,
Load control device.
低い値の第３の閾値を下回る場合、前記負荷手段の負荷電力を減少させる
請求項３に記載の負荷制御装置。 4. The load control device according to claim 3, wherein the control unit decreases the load power of the load unit when a value related to the output of the natural energy power generation unit is lower than a third threshold value lower than the first threshold value. .
する負荷制御装置において、
前記蓄電手段および前記負荷手段に接続する自然エネルギー発電手段からの出力に関す
る値が第１の閾値を上回る場合、前記蓄電手段および前記負荷手段の負荷電力を増加さ
せた後、事前に設定された時間経過後に前記蓄電手段の負荷電力を減少させる制御手段を
備える、
負荷制御装置。 In the load control device for controlling the power storage means for charging and discharging power and the load means having a slower power consumption response than the power storage means,
When a value related to the output from the natural energy power generation means connected to the power storage means and the load means exceeds a first threshold, a time set in advance after increasing the load power of the power storage means and the load means Comprising control means for reducing the load power of the power storage means after elapse,
Load control device.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010244651A JP5681448B2 (en) | 2010-10-29 | 2010-10-29 | Home energy management system |
| JP2014228226A JP6002196B2 (en) | 2010-10-29 | 2014-11-10 | Load control device |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010244651A JP5681448B2 (en) | 2010-10-29 | 2010-10-29 | Home energy management system |
| JP2014228226A JP6002196B2 (en) | 2010-10-29 | 2014-11-10 | Load control device |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2010244651A Division JP5681448B2 (en) | 2010-10-29 | 2010-10-29 | Home energy management system |
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| Publication Number | Publication Date |
|---|---|
| JP2015073433A JP2015073433A (en) | 2015-04-16 |
| JP6002196B2 true JP6002196B2 (en) | 2016-10-05 |
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|---|---|---|---|
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| JP2014228226A Active JP6002196B2 (en) | 2010-10-29 | 2014-11-10 | Load control device |
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| JP2010244651A Expired - Fee Related JP5681448B2 (en) | 2010-10-29 | 2010-10-29 | Home energy management system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP5652196B2 (en) * | 2010-12-27 | 2015-01-14 | 株式会社ノーリツ | Inverter |
| JP5138110B1 (en) * | 2012-05-24 | 2013-02-06 | キャリアシステム株式会社 | Solar power system |
| JP6036016B2 (en) * | 2012-08-30 | 2016-11-30 | 株式会社ノーリツ | Heat pump hot water supply system |
| JP5904933B2 (en) * | 2012-12-26 | 2016-04-20 | リンナイ株式会社 | Hot water storage water heater |
| JP5907921B2 (en) * | 2013-03-27 | 2016-04-26 | リンナイ株式会社 | Heating system |
| JP6203016B2 (en) * | 2013-11-28 | 2017-09-27 | 三菱電機株式会社 | Solar power system |
| JP6447093B2 (en) * | 2014-12-19 | 2019-01-09 | 株式会社デンソー | Power management system |
| JP6491494B2 (en) * | 2015-02-18 | 2019-03-27 | 積水化学工業株式会社 | Hot water controller |
| JP6082420B2 (en) | 2015-03-31 | 2017-02-15 | 富士重工業株式会社 | Vehicle power supply |
| JP6495089B2 (en) * | 2015-04-28 | 2019-04-03 | 京セラ株式会社 | Power management apparatus and power conversion apparatus |
| WO2016189710A1 (en) * | 2015-05-27 | 2016-12-01 | 株式会社システム・ジェイディー | Voltage measurement device and voltage measurement method |
| JP6554923B2 (en) * | 2015-06-09 | 2019-08-07 | 東京電力ホールディングス株式会社 | Power control method and power control system |
| JP2017050903A (en) * | 2015-08-31 | 2017-03-09 | シャープ株式会社 | Energy management system, energy management apparatus, and energy management method |
| JP2017038432A (en) * | 2015-08-07 | 2017-02-16 | シャープ株式会社 | Control device, system, and control method |
| WO2017026287A1 (en) * | 2015-08-07 | 2017-02-16 | シャープ株式会社 | Control device, energy management device, system, and control method |
| JP6508000B2 (en) * | 2015-11-05 | 2019-05-08 | 株式会社デンソー | Power controller |
| JP6143979B1 (en) * | 2015-12-16 | 2017-06-07 | 三菱電機株式会社 | Power management equipment |
| JP6598070B2 (en) * | 2016-03-11 | 2019-10-30 | パナソニックＩｐマネジメント株式会社 | Energy prediction system |
| JP6800592B2 (en) * | 2016-03-14 | 2020-12-16 | シャープ株式会社 | Controls, control methods and programs |
| CN109791418B (en) | 2016-10-03 | 2021-02-09 | 株式会社Iks | Power control device and control method thereof |
| JP6964284B2 (en) * | 2017-03-23 | 2021-11-10 | 株式会社日立製作所 | Aggregation system and its control method and composite power converter |
| JP6624266B2 (en) * | 2018-10-30 | 2019-12-25 | 日本電気株式会社 | Power control device |
| JP2020174460A (en) * | 2019-04-10 | 2020-10-22 | シャープ株式会社 | Control device, control method, and power control system |
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| JP2001260718A (en) * | 2000-03-16 | 2001-09-26 | Railway Technical Res Inst | Dc power supply facility for electric railroad |
| JP4742462B2 (en) * | 2001-07-25 | 2011-08-10 | トヨタ自動車株式会社 | Vehicle regeneration control device |
| JP3838955B2 (en) * | 2002-08-28 | 2006-10-25 | 京セラ株式会社 | Electricity supply and demand system |
| JP3726265B2 (en) * | 2002-12-25 | 2005-12-14 | 中国電力株式会社 | Distributed home power supply device using DC interconnection and control method thereof |
| JP2005253202A (en) * | 2004-03-04 | 2005-09-15 | Matsushita Electric Ind Co Ltd | Power control system, power control method, program, and recording medium |
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| JP2012100395A (en) | 2012-05-24 |
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