JP2003189477A - Power controller - Google Patents
Power controllerInfo
- Publication number
- JP2003189477A JP2003189477A JP2001382121A JP2001382121A JP2003189477A JP 2003189477 A JP2003189477 A JP 2003189477A JP 2001382121 A JP2001382121 A JP 2001382121A JP 2001382121 A JP2001382121 A JP 2001382121A JP 2003189477 A JP2003189477 A JP 2003189477A
- Authority
- JP
- Japan
- Prior art keywords
- power
- storage battery
- switching means
- solar cell
- time zone
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
Landscapes
- Supply And Distribution Of Alternating Current (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、商用交流電源ラ
インに対して太陽電池、蓄電池、および空調負荷を含む
電力負荷が接続されてなるシステムにおいて電力制御を
行うための装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for controlling power in a system in which a commercial AC power supply line is connected to a power load including a solar cell, a storage battery, and an air conditioning load.
【０００２】[0002]
【従来の技術】従来から、太陽電池のコスト低下に伴っ
て、住宅のみならず各種事務所においても太陽電池が設
置されるケースが増加しつつある。2. Description of the Related Art Conventionally, as the cost of solar cells has decreased, the number of cases where solar cells are installed not only in houses but also in various offices has been increasing.
【０００３】ここで、現状においては、住宅への太陽電
池の設置は、余剰電力を電力会社に売電することを前提
として行われており、太陽電池と共に蓄電池を設置する
場合には、蓄電池を非常用電源として使用することを目
的としており、余剰電力を蓄電して電力負荷の運転に供
することは全く意図されていない。Here, in the present situation, installation of solar cells in a house is performed on the assumption that surplus power is sold to an electric power company, and when installing storage batteries together with solar cells, the storage batteries are installed. It is intended to be used as an emergency power source, and it is not intended to store surplus power for use in operating a power load.
【０００４】具体的には、例えば、エネルギ発生手段
と、エネルギ貯蔵手段と、エネルギ消費手段と、エネル
ギ購入手段と、エネルギ消費量計測手段と、エネルギ発
生量学習手段と、エネルギ発生量予測手段と、エネルギ
消費量学習手段と、エネルギ消費量予測手段と、エネル
ギ夜間貯蔵手段と、エネルギ供給制御手段とを有し、エ
ネルギ貯蔵手段によって夜間料金時の電力を貯蔵し、非
夜間料金時に貯蔵電力をエネルギ消費手段に供給し、し
かもエネルギ発生手段により発生された電力をエネルギ
消費手段に供給するようにしたエネルギ制御装置が提案
されている（特許第２６８０９６５号公報参照）。Specifically, for example, energy generation means, energy storage means, energy consumption means, energy purchase means, energy consumption amount measurement means, energy generation amount learning means, and energy generation amount prediction means. An energy consumption amount learning means, an energy consumption amount prediction means, an energy nighttime storage means, and an energy supply control means. The energy storage means stores electric power for nighttime charges, and stores stored electric power for non-nighttime charges. An energy control device has been proposed, which supplies the energy consumption means with the electric power generated by the energy generation means (see Japanese Patent No. 2680965).
【０００５】[0005]
【発明が解決しようとする課題】特許第２６８０９６５
号公報に記載されたエネルギ制御装置においては、余剰
電力を売電することを全く考慮していないので、エネル
ギ発生手段として太陽電池を採用した場合には、余剰電
力が無駄になってしまう可能性があるという不都合があ
る。もちろん、売買電力価格が動的に変化する場合を考
慮して、最も有利に電力の売買を行うことにも対処する
ことができない。[Patent Document 1] Japanese Patent No. 2680965
The energy control device described in the publication does not consider selling the surplus power at all, so that when the solar cell is adopted as the energy generating means, the surplus power may be wasted. There is a disadvantage that there is. Of course, it is not possible to deal with the most advantageous trading of electric power in consideration of the case where the trading electric power price dynamically changes.
【０００６】また、学習データのみに基づいてエネルギ
消費量を予測しているので、エネルギー消費量の予測精
度が低くなってしまい、夜間料金時の電力の有効利用が
不十分になってしまう可能性がある。Further, since the energy consumption is predicted based only on the learning data, the accuracy of the energy consumption prediction becomes low, and there is a possibility that the effective use of electric power at nighttime charge will be insufficient. There is.
【０００７】[0007]
【発明の目的】この発明は上記の問題点に鑑みてなされ
たものであり、太陽電池および蓄電池を用いて電力の有
効活用を達成でき、しかも電力購入コストを低減するこ
とができる電力制御装置を提供することを目的としてい
る。SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and provides a power control device which can achieve effective utilization of electric power by using a solar cell and a storage battery, and can reduce power purchase cost. It is intended to be provided.
【０００８】[0008]
【課題を解決するための手段】請求項１の電力制御装置
は、商用交流電源ラインに対して、電力負荷、太陽電
池、および蓄電池が接続されているとともに、太陽電池
からの出力電力を電力負荷、蓄電池、商用交流電源ライ
ンに選択的に供給する第１切替手段、蓄電池からの出力
電力を電力負荷、商用交流電源ラインに選択的に供給す
る第２切替手段、および蓄電池への充電、蓄電池からの
放電を選択する第３切替手段が設けられ、さらに第１切
替手段、第２切替手段、および第３切替手段を制御する
制御手段が設けられているものである。前記電力負荷
は、空調負荷およびそれ以外の電力を消費する負荷を含
むものである。According to a first aspect of the present invention, there is provided a power control device in which a commercial AC power line is connected to a power load, a solar cell, and a storage battery, and the output power from the solar cell is used as the power load. , A storage battery, a first switching means for selectively supplying to the commercial AC power supply line, a second switching means for selectively supplying output power from the storage battery to the power load, the commercial AC power supply line, and charging to the storage battery, from the storage battery Is provided with a third switching means for selecting the discharge, and further with a control means for controlling the first switching means, the second switching means, and the third switching means. The power load includes an air conditioning load and a load that consumes other power.
【０００９】請求項２の電力制御装置は、前記制御手段
として、電力負荷による消費電力の予測を行うととも
に、時間帯別の買電電力価格を取得し、消費電力予測お
よび買電電力価格に基づいて第１切替手段、第２切替手
段、および第３切替手段を制御するものを採用するもの
である。According to another aspect of the power control apparatus of the present invention, the control means predicts the power consumption by the power load, acquires the power purchase price for each time period, and based on the power consumption prediction and the power purchase price. A device for controlling the first switching device, the second switching device, and the third switching device is adopted.
【００１０】請求項３の電力制御装置は、商用交流電源
ラインに対して、電力負荷、太陽電池、および蓄電池が
接続されているとともに、少なくとも蓄電池への充電、
蓄電池からの放電を選択する第３切替手段が設けられ、
さらに第３切替手段を制御する制御手段が設けられてい
るものである。According to another aspect of the power control apparatus of the present invention, the commercial AC power supply line is connected to the power load, the solar battery, and the storage battery, and at least the storage battery is charged.
Third switching means for selecting discharge from the storage battery is provided,
Further, control means for controlling the third switching means is provided.
【００１１】請求項４の電力制御装置は、前記制御手段
として、太陽電池による発電の余剰分を蓄電する時間帯
の発生が予測され、かつその時間帯までの予測される蓄
電池放電量では太陽電池による発電の余剰分の蓄電が完
全には行えないと予測されることを条件として、前記余
剰分による蓄電が完全に行えるレベルで蓄電を終了させ
るべく、第３切替手段を制御するものを採用するもので
ある。According to another aspect of the power control apparatus of the present invention, as the control means, it is predicted that a time zone in which a surplus of power generation by the solar cell is stored is generated, and the solar cell is at a predicted storage battery discharge amount up to that time zone. The third switching means is controlled so as to end the power storage at a level at which the surplus power storage can be fully stored, provided that it is predicted that the surplus power storage cannot be completely stored. It is a thing.
【００１２】[0012]
【作用】請求項１の電力制御装置であれば、第１切替手
段によって、太陽電池からの出力電力を電力負荷、蓄電
池、商用交流電源ラインに選択的に供給することがで
き、第２切替手段によって、蓄電池からの出力電力を電
力負荷、商用交流電源ラインに選択的に供給することが
でき、しかも第３切替手段によって、蓄電池への充電、
蓄電池からの放電を選択することができる。According to the power control device of the present invention, the output power from the solar cell can be selectively supplied to the power load, the storage battery and the commercial AC power supply line by the first switching means, and the second switching means. The output power from the storage battery can be selectively supplied to the power load and the commercial AC power supply line, and the storage battery can be charged by the third switching means.
The discharge from the storage battery can be selected.
【００１３】したがって、蓄電池を有効活用して、電力
の有効利用を達成することができ、しかも電力購入コス
トを低減することができる。Therefore, it is possible to effectively use the storage battery to achieve the effective use of electric power, and it is possible to reduce the cost for purchasing the electric power.
【００１４】請求項２の電力制御装置であれば、前記制
御手段として、電力負荷による消費電力の予測を行うと
ともに、時間帯別の買電電力価格を取得し、消費電力予
測および買電電力価格に基づいて第１切替手段、第２切
替手段、および第３切替手段を制御するものを採用する
のであるから、余剰電力の効果的な売電を達成すること
ができるほか、請求項１と同様の作用を達成することが
できる。According to another aspect of the power control device of the present invention, the control means predicts the power consumption by the power load, acquires the power purchase price for each time zone, and predicts the power consumption and the power purchase price. Since the one that controls the first switching means, the second switching means, and the third switching means based on the above is adopted, it is possible to effectively sell the surplus power, and the same as in claim 1. The action of can be achieved.
【００１５】請求項３の電力制御装置であれば、第３切
替手段によって、少なくとも蓄電池への充電、蓄電池か
らの放電を選択することができる。According to the power control device of the third aspect, at least charging to the storage battery and discharging from the storage battery can be selected by the third switching means.
【００１６】したがって、簡単な構成でありながら、蓄
電池を有効活用して、電力の有効利用を達成することが
でき、しかも電力購入コストを低減することができる。Therefore, it is possible to effectively utilize the storage battery and achieve the effective utilization of the electric power, and to reduce the cost for purchasing the electric power, though the structure is simple.
【００１７】請求項４の電力制御装置であれば、前記制
御手段として、太陽電池による発電の余剰分を蓄電する
時間帯の発生が予測され、かつその時間帯までの予測さ
れる蓄電池放電量では太陽電池による発電の余剰分の蓄
電が完全には行えないと予測されることを条件として、
前記余剰分による蓄電が完全に行えるレベルで蓄電を終
了させるべく、第３切替手段を制御するものを採用する
のであるから、太陽電池による発電量を無駄なく利用す
ることができるほか、請求項２または請求項３と同様の
作用を達成することができる。According to another aspect of the power control apparatus of the present invention, as the control means, it is predicted that a time zone in which a surplus of power generated by the solar cell is stored is generated, and the storage battery discharge amount up to that time zone is predicted. On condition that it is predicted that the surplus electricity generated by the solar cell cannot be completely stored,
Since the third switching means is controlled so as to end the power storage at a level at which the surplus power can be completely stored, the amount of power generated by the solar cell can be used without waste. Alternatively, the same effect as that of claim 3 can be achieved.
【００１８】[0018]
【発明の実施の形態】以下、添付図面を参照して、この
発明の電力制御装置の実施の態様を詳細に説明する。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the power control apparatus of the present invention will be described in detail below with reference to the accompanying drawings.
【００１９】図１はこの発明の電力制御装置の一実施態
様を示すブロック図である。FIG. 1 is a block diagram showing an embodiment of the power control apparatus of the present invention.
【００２０】この電力制御装置は、商用交流電源１に接
続された商用交流電源ラインに対して、空調装置を含む
ものとして表される電力負荷４を接続し、インバータ５
ａ、ＤＣ／ＤＣコンバータ５ｂをこの順に介して太陽電
池５を接続し、双方向インバータ６ａ、双方向ＤＣ／Ｄ
Ｃコンバータ６ｂをこの順に介して蓄電池６を接続し、
双方向インバータ６ａの方向性を制御する制御部１１を
設けたものである。In this power control device, a commercial AC power supply line connected to a commercial AC power supply 1 is connected to a power load 4 represented as including an air conditioner, and an inverter 5 is connected.
a and the DC / DC converter 5b are connected in this order to the solar cell 5, and the bidirectional inverter 6a and the bidirectional DC / D are connected.
The storage battery 6 is connected through the C converter 6b in this order,
A control unit 11 for controlling the directionality of the bidirectional inverter 6a is provided.
【００２１】この電力制御装置においては、商用交流電
源１から電力負荷４への電力供給、および太陽電池５か
ら電力負荷４への電力供給を行い続けるとともに、蓄電
池６への蓄電、蓄電池６からの放電を制御することがで
き、ひいては電力の有効利用を達成することができ、し
かも電力購入コストを低減することができる。In this power control device, while continuously supplying power from the commercial AC power source 1 to the power load 4 and power from the solar cell 5 to the power load 4, the storage battery 6 is charged and the storage battery 6 is charged. Discharge can be controlled, and thus effective use of electric power can be achieved, and electric power purchase cost can be reduced.
【００２２】さらに説明する。Further description will be made.
【００２３】前記制御部１１においては、例えば、以下
の電力制御条件を用いて電力制御計画を作成する。In the control section 11, for example, a power control plan is created using the following power control conditions.
【００２４】（１）基本条件：
（ａ）ある時間帯での電力料金は、買電力料金≧売電力
料金≧０である。(1) Basic conditions: (a) The electric power charge in a certain time zone is the purchased power charge ≧ the sold power charge ≧ 0.
【００２５】（ｂ）太陽光発電時間帯は高電力価格時間
帯である。(B) The solar power generation time zone is a high power price time zone.
【００２６】（ｃ）低電力価格時間帯は深夜時間帯であ
る。(C) The low power price time zone is the midnight time zone.
【００２７】（２）太陽光発電に関する条件：
（ａ）太陽光発電電力は、先ず電力需要（空調装置を含
む電力負荷）に振り向ける。(2) Conditions for photovoltaic power generation: (a) First, the photovoltaic power generation is directed to the power demand (power load including the air conditioner).
【００２８】（ｂ）（ａ）の処理を行っても余剰電力が
生じる場合には、売電力料金＝買電力料金ならば売電を
行い、売電力料金＜買電力料金ならば蓄電を行う。If surplus power is generated even after the processes of (b) and (a) are performed, the power is sold if the power sale charge = the power purchase charge, and the power is stored if the power sale charge <the power purchase charge.
【００２９】ただし、この条件は充放電ロスが無視でき
ると仮定しているので、充放電ロスが無視できない場合
には、充放電ロスを考慮した売電、蓄電を行う。However, this condition assumes that the charging / discharging loss can be ignored. Therefore, when the charging / discharging loss cannot be ignored, the power sale / storage is performed in consideration of the charging / discharging loss.
【００３０】（３）蓄電池に関する条件：
（ａ）高価格買電力時間帯：電力需要があれば、この時
間帯の終了までに放電を完了することが基本である。(3) Conditions for storage battery: (a) High-priced power purchase time zone: If there is power demand, it is basically necessary to complete the discharge by the end of this time zone.
【００３１】そして、蓄電池放電量＞電力需要の場合に
は、売電力料金＞低価格時間帯買電力料金ならば売電を
行い、売電力料金≦低価格時間帯買電力料金ならば売電
を行わない。When the storage battery discharge amount> the power demand, the power sale charge> the low price time zone power purchase charge is sold, and the power sale rate ≦ the low price time zone power purchase charge, the power is sold. Not performed.
【００３２】（ｂ）低価格買電力時間帯：この時間帯の
終了までに満充電を完了する。（ただし、太陽光発電の
余剰分を蓄電する時間帯の発生が予測され、かつその時
間帯までの予測される蓄電池放電量では、上記蓄電が完
全に行えないと予測される場合は、満充電とせず、上記
蓄電が完全に行えるレベルで蓄電を終了する。）
上記の構成の電力制御装置によれば、上記の電力制御条
件を用いて電力制御計画を作成し、双方向インバータ６
ａの方向性を制御するのであるから、最も有効に太陽電
池５および蓄電池６を活用できるように、太陽電池５お
よび蓄電池６の充放電制御および売買電力制御を行うこ
とができる。この結果、より少ない電力コストで電力需
要をまかなうことができる。(B) Low price power purchase time zone: Full charge is completed by the end of this time zone. (However, if it is predicted that a time zone for storing the surplus power of solar power generation will occur and if it is predicted that the storage battery cannot be completely charged with the predicted amount of storage battery discharge up to that time zone, full charge will occur. However, according to the power control device having the above configuration, a power control plan is created using the above power control conditions, and the bidirectional inverter 6 is used.
Since the directionality of a is controlled, the charge / discharge control and the trading power control of the solar cell 5 and the storage battery 6 can be performed so that the solar cell 5 and the storage battery 6 can be utilized most effectively. As a result, it is possible to meet the power demand with a lower power cost.
【００３３】図２はこの発明の電力制御装置の他の実施
態様を示すブロック図である。FIG. 2 is a block diagram showing another embodiment of the power control apparatus of the present invention.
【００３４】この電力制御装置が図３の電力制御装置と
異なる点は、インバータ５ａ、双方向インバータ６ａを
省略した点、商用交流電源ラインに対して双方向インバ
ータ１ａを接続して直流電源ラインを構成し、この直流
電源ラインに対してＤＣ／ＤＣコンバータ５ｂ、双方向
ＤＣ／ＤＣコンバータ６ｂを接続した点、制御部１１と
して、双方向インバータ１ａ、６ｂを制御するものを採
用した点のみである。This power control device differs from the power control device of FIG. 3 in that the inverter 5a and the bidirectional inverter 6a are omitted, and the bidirectional inverter 1a is connected to the commercial AC power supply line to connect the DC power supply line. It is only that the DC / DC converter 5b and the bidirectional DC / DC converter 6b are connected to the DC power supply line, and that the control unit 11 controls the bidirectional inverters 1a and 6b. .
【００３５】この電力制御装置においては、太陽電池５
による蓄電池６への蓄電を、双方向インバータ１ａを介
することなく直流電源ラインを通して行うことができ、
太陽電池５、蓄電池６から電力負荷４への電力供給、商
用交流電源１から蓄電池６への蓄電を双方向インバータ
１ａの制御によって行うことができ、ひいては電力の有
効利用を達成することができ、しかも電力購入コストを
低減することができる。In this power control device, the solar cell 5
The storage battery 6 can be charged through the DC power supply line without passing through the bidirectional inverter 1a.
Power supply from the solar battery 5 and the storage battery 6 to the power load 4 and storage from the commercial AC power supply 1 to the storage battery 6 can be performed by the control of the bidirectional inverter 1a, and thus effective use of power can be achieved. Moreover, it is possible to reduce the power purchase cost.
【００３６】そして、この実施態様では、インバータ５
ａが不要であるから、図１の実施態様と比較して構成を
簡単化することができる。In this embodiment, the inverter 5
Since a is unnecessary, the configuration can be simplified as compared with the embodiment of FIG.
【００３７】図３はこの発明の電力制御装置の一実施態
様を示すブロック図である。FIG. 3 is a block diagram showing an embodiment of the power control apparatus of the present invention.
【００３８】この電力制御装置は、商用交流電源１を入
力として直流電力を出力し、直流電力を入力として交流
電力を出力する双方向コンバータ２と、双方向コンバー
タ２から出力される直流電力を入力として交流電力を出
力するインバータ３と、インバータ３から出力される交
流電力を入力として動作する空調装置４と、太陽電池５
と、蓄電池６と、太陽電池５からの出力電力を空調装置
４、蓄電池６、商用交流電源ラインに選択的に供給する
第１切替部７と、蓄電池６からの出力電力を空調装置
４、商用交流電源ラインに選択的に供給する第２切替部
８と、蓄電池６への充電、蓄電池６からの放電を選択す
る第３切替部９と、双方向コンバータ２から出力される
直流電力を空調装置４、蓄電池６に選択的に供給する第
４切替部１０と、双方向コンバータ２、第１切替部７、
第２切替部８、第３切替部９、第４切替部１０を制御す
る制御部１１’とを有している。なお、太陽電池５から
の直流電力を各部に供給するために必要なＤＣ／ＤＣコ
ンバータ、インバータは図示を省略している。また、蓄
電池６に対する充電、蓄電池６からの放電を行うために
必要なＤＣ／ＤＣコンバータ、双方向インバータも図示
を省略している。さらに、空調装置以外の電力負荷も図
示を省略している。This power control device inputs a DC power output from a commercial AC power supply 1 and a DC power output from the bidirectional converter 2 which outputs DC power and inputs AC power to output AC power. An inverter 3 that outputs AC power as an input, an air conditioner 4 that operates by using the AC power output from the inverter 3 as an input, and a solar cell 5
A first switching unit 7 that selectively supplies the output power from the storage battery 6 and the solar battery 5 to the air conditioner 4, the storage battery 6, and the commercial AC power supply line; and the output power from the storage battery 6 to the air conditioner 4, the commercial power supply. The second switching unit 8 that selectively supplies to the AC power supply line, the third switching unit 9 that selects charging to the storage battery 6 and discharging from the storage battery 6, and the DC power output from the bidirectional converter 2 4, a fourth switching unit 10 that selectively supplies the storage battery 6, a bidirectional converter 2, a first switching unit 7,
It has the 2nd switching part 8, the 3rd switching part 9, and the control part 11 'which controls the 4th switching part 10. The DC / DC converter and the inverter required to supply the DC power from the solar cell 5 to each unit are not shown. Further, a DC / DC converter and a bidirectional inverter necessary for charging the storage battery 6 and discharging the storage battery 6 are not shown. Further, power loads other than the air conditioner are also omitted in the figure.
【００３９】図４は前記制御部の構成を詳細に示すブロ
ック図である。FIG. 4 is a block diagram showing the structure of the control unit in detail.
【００４０】制御部１１’は、気象予測情報（天候、温
度、湿度、日照量の何れか１つ以上）から空調負荷の予
測を行い、空調装置４による消費電力を予測するととも
に、過去の学習データを元に空調装置以外の電力負荷に
よる消費電力を予測する消費電力予測部１１１と、各電
力会社が開示する時間帯別の売買電力料金情報を電話回
線網、インターネットなどを介して獲得して保持する売
買電力料金情報獲得保持部１１２と、気象情報（天候、
降水確率、日照量の何れか１つ以上）から太陽電池５に
よる発電量を予測する太陽電池発電量予測部１１３と、
予測された消費電力、売買電力料金情報、および予測さ
れた発電量に基づいて太陽電池５および蓄電池６に対す
る電力制御計画を作成し、電力制御計画に基づいて双方
向コンバータ２、第１切替部７、第２切替部８、第３切
替部９、第４切替部１０を制御する電力制御部１１４と
を有している。The control unit 11 'predicts the air conditioning load from the weather prediction information (any one or more of weather, temperature, humidity, and sunshine), predicts the power consumption by the air conditioner 4, and learns the past. The power consumption predicting unit 111 that predicts the power consumption by the power load other than the air conditioner based on the data, and the trading power charge information for each time period disclosed by each power company are acquired through the telephone network, the Internet, or the like. Acquiring and holding unit 112 for acquiring and selling power charge information, and weather information (weather,
A solar cell power generation amount prediction unit 113 that predicts the power generation amount by the solar cell 5 from one of the probability of precipitation and the amount of sunshine)
A power control plan for the solar cell 5 and the storage battery 6 is created based on the predicted power consumption, the trading power charge information, and the predicted power generation amount, and the bidirectional converter 2 and the first switching unit 7 are based on the power control plan. , The second switching unit 8, the third switching unit 9, and the fourth switching unit 10, the power control unit 114.
【００４１】なお、空調装置４による消費電力の予測
は、従来公知のように、過去の所定期間（例えば、１年
間）における気象情報と実際の消費電力との関係を用い
て、気象予測情報から空調負荷の予測、消費電力の予測
を行うことにより達成される。また、この予測は、所定
時間（例えば、１時間）毎に行われる。The power consumption of the air conditioner 4 is predicted from the weather forecast information by using the relationship between the weather information and the actual power consumption in a predetermined past period (for example, one year), as is conventionally known. This is achieved by predicting the air conditioning load and power consumption. In addition, this prediction is performed every predetermined time (for example, one hour).
【００４２】太陽電池５による発電量の予測は、既知の
太陽電池５の発電特性および気象情報を用いて達成する
ことができる。The prediction of the amount of power generation by the solar cell 5 can be achieved by using the known power generation characteristics of the solar cell 5 and weather information.
【００４３】前記電力制御部１１４においては、例え
ば、以下の電力制御条件を用いて電力制御計画を作成す
る。In the power control section 114, for example, a power control plan is created using the following power control conditions.
【００４４】（１）基本条件：
（ａ）ある時間帯での電力料金は、買電力料金≧売電力
料金≧０である。(1) Basic conditions: (a) The electric power charge in a certain time zone is the purchased power charge ≧ the sold power charge ≧ 0.
【００４５】（ｂ）太陽光発電時間帯は高電力価格時間
帯である。(B) The solar power generation time zone is a high power price time zone.
【００４６】（ｃ）低電力価格時間帯は深夜時間帯であ
る。(C) The low power price time zone is the midnight time zone.
【００４７】（２）太陽光発電に関する条件：
（ａ）太陽光発電電力は、先ず電力需要（空調装置を含
む電力負荷）に振り向ける。(2) Conditions for photovoltaic power generation: (a) First, the photovoltaic power generation is directed to power demand (power load including an air conditioner).
【００４８】（ｂ）（ａ）の処理を行っても余剰電力が
生じる場合には、売電力料金＝買電力料金ならば売電を
行い、売電力料金＜買電力料金ならば蓄電を行う。(B) If surplus power is generated even after performing the processes of (a), the power is sold if the power sale rate = the power purchase rate, and the power is stored if the power sale rate <the power purchase rate.
【００４９】ただし、この条件は充放電ロスが無視でき
ると仮定しているので、充放電ロスが無視できない場合
には、充放電ロスを考慮した売電、蓄電を行う。However, since this condition assumes that the charging / discharging loss can be ignored, when the charging / discharging loss cannot be ignored, the power sale / storage is performed in consideration of the charging / discharging loss.
【００５０】（３）蓄電池に関する条件：
（ａ）高価格買電力時間帯：電力需要があれば、この時
間帯の終了までに放電を完了することが基本である。(3) Conditions for storage battery: (a) High-priced power purchase time zone: If there is power demand, it is basically necessary to complete the discharge by the end of this time zone.
【００５１】そして、蓄電池放電量＞電力需要の場合に
は、売電力料金＞低価格時間帯買電力料金ならば売電を
行い、売電力料金≦低価格時間帯買電力料金ならば売電
を行わない。If the storage battery discharge amount> the power demand, the power sale charge> the low price time zone power purchase charge is sold, and if the power sale rate ≦ the low price time zone power purchase charge, the power is sold. Not performed.
【００５２】（ｂ）低価格買電力時間帯：この時間帯の
終了までに満充電を完了する。（ただし、太陽光発電の
余剰分を蓄電する時間帯の発生が予測され、かつその時
間帯までの予測される蓄電池放電量では、上記蓄電が完
全に行えないと予測される場合は、満充電とせず、上記
蓄電が完全に行えるレベルで蓄電を終了する。）
上記の構成の電力制御装置によれば、上記の電力制御条
件を用いて電力制御計画を作成し、第１切替部７、第２
切替部８、第３切替部９、第４切替部１０を制御するの
であるから、最も有効に太陽電池５および蓄電池６を活
用できるように、太陽電池５および蓄電池６の充放電制
御および売買電力制御を行うことができる。この結果、
より少ない電力コストで電力需要をまかなうことができ
る。(B) Low-price power purchase time zone: Full charge is completed by the end of this time zone. (However, if it is predicted that a time zone for storing the surplus power of solar power generation will occur and if it is predicted that the storage battery cannot be completely charged with the predicted amount of storage battery discharge up to that time zone, full charge will occur. The power control device configured as described above creates a power control plan using the power control conditions described above, and ends the power storage at the level at which the power storage can be completely performed. Two
Since the switching unit 8, the third switching unit 9, and the fourth switching unit 10 are controlled, the charging / discharging control of the solar cell 5 and the storage battery 6 and the trading power are performed so that the solar cell 5 and the storage battery 6 can be utilized most effectively. Control can be performed. As a result,
Electricity demand can be met with less electricity cost.
【００５３】なお、図３にはインバータおよび空調装置
のみを電力負荷として示しているが、当該空調装置のよ
うにインバータが介在するような電力負荷については、
この実施態様と同様に制御することで、蓄電池を有効活
用して、電力の有効利用を達成することができ、しかも
電力購入コストを低減することができる。Although only the inverter and the air conditioner are shown as electric loads in FIG. 3, the electric loads such as the air conditioner in which the inverter is interposed are as follows.
By controlling in the same manner as this embodiment, it is possible to effectively utilize the storage battery and achieve effective utilization of the electric power, and further it is possible to reduce the power purchase cost.
【００５４】[0054]
【発明の効果】請求項１の発明は、蓄電池を有効活用し
て、電力の有効利用を達成することができ、しかも電力
購入コストを低減することができるという特有の効果を
奏する。According to the invention of claim 1, the storage battery can be effectively used to achieve the effective use of the electric power, and further, the purchase cost of the electric power can be reduced.
【００５５】請求項２の発明は、余剰電力の効果的な売
電を達成することができるほか、請求項１と同様の効果
を奏する。The invention of claim 2 can achieve the effective power sale of surplus power, and also has the same effect as that of claim 1.
【００５６】請求項３の発明は、簡単な構成でありなが
ら、蓄電池を有効活用して、電力の有効利用を達成する
ことができ、しかも電力購入コストを低減することがで
きるという特有の効果を奏する。The invention of claim 3 has a unique effect that the storage battery can be effectively used to achieve the effective use of the electric power, and the purchasing cost of the electric power can be reduced, though the structure is simple. Play.
【００５７】請求項４の発明は、太陽電池による発電量
を無駄なく利用することができるほか、請求項２または
請求項３と同様の効果を奏する。According to the invention of claim 4, the amount of power generated by the solar cell can be utilized without waste, and the same effect as that of claim 2 or 3 can be obtained.
【図１】この発明の電力制御装置の一実施態様を示すブ
ロック図である。FIG. 1 is a block diagram showing an embodiment of a power control device of the present invention.
【図２】この発明の電力制御装置の他の実施態様を示す
ブロック図である。FIG. 2 is a block diagram showing another embodiment of the power control device of the present invention.
【図３】この発明の電力制御装置のさらに他の実施態様
を示すブロック図である。FIG. 3 is a block diagram showing still another embodiment of the power control device of the present invention.
【図４】制御部の構成を詳細に示すブロック図である。FIG. 4 is a block diagram showing the configuration of a control unit in detail.
１ａ、６ａ 双方向インバータ ５ｂ ＤＣ／ＤＣコ
ンバータ
６ｂ 双方向インバータ ４ 空調装置
５ 太陽電池 ６ 蓄電池
７ 第１切替部 ８ 第２切替部
９ 第３切替部 １１、１１’ 制御部1a, 6a bidirectional inverter 5b DC / DC converter 6b bidirectional inverter 4 air conditioner 5 solar cell 6 storage battery 7 first switching unit 8 second switching unit 9 third switching unit 11, 11 'control unit
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 5G003 AA01 AA06 BA01 CC02 DA06 DA07 GB06 5G066 CA09 DA08 HA15 HB06 HB09 JA07 JB03 KA12 KB03 5H030 AA00 AS01 BB01 BB22 ─────────────────────────────────────────────────── ─── Continued front page F-term (reference) 5G003 AA01 AA06 BA01 CC02 DA06 DA07 GB06 5G066 CA09 DA08 HA15 HB06 HB09 JA07 JB03 KA12 KB03 5H030 AA00 AS01 BB01 BB22
Claims (4)
（４）、太陽電池（５）、および蓄電池（６）が接続さ
れているとともに、太陽電池（５）からの出力電力を電
力負荷（４）、蓄電池（６）、商用交流電源ラインに選
択的に供給する第１切替手段（７）、蓄電池（６）から
の出力電力を電力負荷（４）、商用交流電源ラインに選
択的に供給する第２切替手段（８）、および蓄電池
（６）への充電、蓄電池（６）からの放電を選択する第
３切替手段（９）が設けられ、さらに第１切替手段
（７）、第２切替手段（８）、および第３切替手段
（９）を制御する制御手段（１１）が設けられているこ
とを特徴とする電力制御装置。1. A power load (4), a solar cell (5), and a storage battery (6) are connected to a commercial AC power supply line, and output power from the solar cell (5) is converted into a power load ( 4), the storage battery (6), the first switching means (7) for selectively supplying to the commercial AC power supply line, the output power from the storage battery (6) is selectively supplied to the power load (4), the commercial AC power supply line And a third switching means (9) for selecting charging to the storage battery (6) and discharging from the storage battery (6). Further, the first switching means (7) and the second switching means (8) are provided. A power control device comprising a switching means (8) and a control means (11) for controlling the third switching means (9).
（４）による消費電力の予測を行うとともに、時間帯別
の買電電力価格を取得し、消費電力予測および買電電力
価格に基づいて第１切替手段（７）、第２切替手段
（８）、および第３切替手段（９）を制御するものであ
る請求項１に記載の電力制御装置。2. The control means (11) predicts the power consumption by the power load (4), acquires the power purchase price for each time zone, and based on the power consumption prediction and the power purchase price. The power control device according to claim 1, which controls the first switching means (7), the second switching means (8), and the third switching means (9).
（４）、太陽電池（５）、および蓄電池（６）が接続さ
れているとともに、少なくとも蓄電池（６）への充電、
蓄電池（６）からの放電を選択する第３切替手段（１
ａ）（６ａ）（６ｂ）が設けられ、さらに第３切替手段
（１ａ）（６ａ）（６ｂ）を制御する制御手段（１
１’）が設けられていることを特徴とする電力制御装
置。3. A power load (4), a solar battery (5), and a storage battery (6) are connected to a commercial AC power supply line, and at least the storage battery (6) is charged.
Third switching means (1) for selecting discharge from the storage battery (6)
a) (6a) (6b) are provided, and control means (1) for controlling the third switching means (1a) (6a) (6b)
1 ') is provided.
陽電池（５）による発電の余剰分を蓄電する時間帯の発
生が予測され、かつその時間帯までの予測される蓄電池
放電量では太陽電池（５）による発電の余剰分の蓄電が
完全には行えないと予測されることを条件として、前記
余剰分による蓄電が完全に行えるレベルで蓄電を終了さ
せるべく、第３切替手段（１ａ）（６ａ）（６ｂ）
（９）を制御するものである請求項２または請求項３に
記載の電力制御装置。4. The control means (11) (11 ′) is predicted to generate a time zone in which a surplus of power generated by the solar cell (5) is stored, and the storage battery discharge amount up to that time zone is predicted. Then, on condition that it is predicted that the surplus power generated by the solar cell (5) cannot be fully stored, the third switching means ( 1a) (6a) (6b)
The power control device according to claim 2 or 3, which controls (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001382121A JP2003189477A (en) | 2001-12-14 | 2001-12-14 | Power controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001382121A JP2003189477A (en) | 2001-12-14 | 2001-12-14 | Power controller |
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| Publication Number | Publication Date |
|---|---|
| JP2003189477A true JP2003189477A (en) | 2003-07-04 |
Family
ID=27592593
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001382121A Pending JP2003189477A (en) | 2001-12-14 | 2001-12-14 | Power controller |
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| Country | Link |
|---|---|
| JP (1) | JP2003189477A (en) |
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| JP2008043147A (en) * | 2006-08-09 | 2008-02-21 | Matsushita Electric Ind Co Ltd | Power supply system, control method of power supply system and program |
| JP2008148442A (en) * | 2006-12-08 | 2008-06-26 | Daiwa House Ind Co Ltd | Charging/discharging control system of power storage section in natural energy utilizing power generation system |
| JP2010213468A (en) * | 2009-03-11 | 2010-09-24 | Toshiba Toko Meter Systems Co Ltd | Power control system |
| JP2010268640A (en) * | 2009-05-15 | 2010-11-25 | Toyota Motor Corp | Power supply system and method of controlling the same |
| WO2010143581A1 (en) | 2009-06-11 | 2010-12-16 | パナソニック電工株式会社 | Utility interconnection system |
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