JP2006230147A

Movatterモバイル変換

Info

Publication number: JP2006230147A
Application number: JP2005043248A
Authority: JP
Inventors: Kazuo Suekane; 和男末包; Ichiro Urano; 一郎浦野; Satoshi Yamamoto; 聡山本
Original assignee: Sansha Electric Manufacturing Co Ltd
Current assignee: Sansha Electric Manufacturing Co Ltd
Priority date: 2005-02-18
Filing date: 2005-02-18
Publication date: 2006-08-31

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electric power receiving system that is intended to cut power rate with contract receiving power lowered by one rank, by reducing electric energy in the peak time slot of power consumption. <P>SOLUTION: This electric power storing and reduced electric power receiving system comprises an AC power storing means structured with an electricity storing means like a secondary battery and a power converting means that converts its DC into AC, a controlling and charging means that controls and supplies the DC to the electricity storing means, and a switching means that is changed over between the AC output of the AC power storing means and commercial power. The system also includes a change-over controlling device that detects receiving electric energy and controls the switching means. In this system, the receiving electric energy that exceeds the contract power is reduced by making the AC power storing means supply the short electric energy of the receiving power to a load. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

Translated fromJapanese

本発明は、消費電力変動の大きい設備の受電ピーク容量を低減する受電システムに関し、空調設備等のピーク電力の通電時間を狙い、契約電力量を超過した電力量をこのシステムから補給して、受電する契約電力量を低減するものである。 The present invention relates to a power receiving system that reduces the peak power receiving capacity of facilities with large power consumption fluctuations, and aims at the peak power energizing time of air conditioning equipment, etc. The amount of contract power to be reduced is reduced.

高圧受電は低圧受電より電力料金が安価に設定されている。小規模店舗などの小規模の受電現場に於いても、配電線の電力ロス低減の見地から、高圧受電への切替え契約が加速する傾向にある。買電は季節変動を含めた最大電力で契約電力容量を設定している。実負荷が契約容量を越えそうな時、このシステムから補給して平準化し、ピーク電力をカットして、受電電力の最大値を低減させて、１ランク縮小した契約電力で、従来の２００Ｖ単相３線式から高圧受電に切替え契約をしたいときに、使用されるシステムを提供したい。 High-voltage power reception is set at a lower price than low-voltage power reception. Even in small-scale power reception sites such as small stores, contracts for switching to high-voltage power reception tend to accelerate from the viewpoint of reducing power loss in distribution lines. Electricity purchase has set contracted power capacity with maximum power including seasonal fluctuations. When the actual load is likely to exceed the contracted capacity, this system is replenished and leveled, the peak power is cut, the maximum value of the received power is reduced, and the contracted power reduced by one rank, the conventional 200V single phase We want to provide a system that is used when we want to make a contract for switching from 3-wire to high-voltage power reception.

従来の受電ピーク電力低減技術は、特許文献１に次の記述がある。段落（０００５）に「三相変圧器の負荷側交流出力を直流に変換する交直変換器と、前記交直変換器の直流出力を交流に変換する直交変換器と、直交変換器の交流出力を変圧して電鉄負荷に単相交流電力を供給する単相変圧器とを具備したこと、」、さらに段落（０００５）に、「交直変換器と直交変換器との接続点に、電力貯蔵装置を接続し、無負荷又は軽負荷時に電源側又は負荷側から電力貯蔵装置を充電して有負荷時に負荷側に放電して供給電力を補うことを特徴とする」との、大掛かりな変圧器を有する仕掛けとなっている。 A conventional power receiving peak power reduction technique is described inPatent Document 1 as follows. Paragraph (0005) states that “the AC / DC converter that converts the load side AC output of the three-phase transformer into DC, the orthogonal converter that converts the DC output of the AC / DC converter into AC, and the AC output of the orthogonal converter is transformed. And a single-phase transformer for supplying single-phase AC power to a railway load, ”and further to paragraph (0005),“ A power storage device is connected to a connection point between an AC / DC converter and an orthogonal converter. In addition, it is characterized by charging the power storage device from the power supply side or the load side when there is no load or light load, and discharging it to the load side when there is a load to supplement the supplied power. It has become.

また、事務所などの需要家のピーク電力を抑制するデマンドコントロール技術は、特許文献２に次の記述がある。段落（０００２）に、従来は、「ピーク電力を自動的に抑制するデマンドコントロールを行っているが、例えば冷房の温度を少し上げたり、不要不急の電気装置を一時的に停止するといった犠牲を伴うものである。」の記述があり、さらに、段落（０００５）に、「全負荷電力量が基本契約電力量に近付いたことを検知すると照明電流制御装置を他の機器に優先させて制御し、照明負荷電流値を減少させることにより、全負荷電力量が基本契約電力量を越えることの無いように制御する」「電流値が３０％減少しても多少暗くなったと気付くことはあっても不自由を感じないから、その範囲に明るさを落としても実害はまったく無い」段落（００１１）に、「このシステムを広く普及させる事により電気事業者にとって夏季正午に於けるピーク電力の抑制を無理なく実現する」と、社会貢献実現すると記載されている。以上のように大掛かりな電鉄用の変圧器を有する仕掛けとなっていた。或いは、需要家の節約に期待して快適性を犠牲にしていた。 Moreover, the demand control technique which suppresses the peak electric power of consumers, such as an office, has the following description in patent document 2. FIG. In the paragraph (0002), conventionally, “demand control that automatically suppresses peak power is performed, but for example, there is a sacrifice of slightly raising the temperature of the cooling or temporarily stopping unnecessary electric devices. In addition, in paragraph (0005), the control of the lighting current control device is given priority over other devices when it is detected that the total load power amount is close to the basic contract power amount. By reducing the lighting load current value, control is performed so that the total load power amount does not exceed the basic contract power amount. ”“ Even if the current value is reduced by 30%, it may be noticed that it has become somewhat dark. Since there is no inconvenience, there is no real harm even if the brightness is reduced to the range. To be realized without difficulty suppression of power ", it has been described to social contribution realized. As described above, the device has a large electric transformer. Or, at the expense of comfort in anticipation of consumer savings.

「特開２０００−６９７６３号」公報、名称「電鉄用電力供給装置」“Japanese Patent Laid-Open No. 2000-69763”, name “Electric Railway Power Supply Device”「特開平８−１２６２００号」公報、名称「デマンドコントロールシステム」Japanese Patent Laid-Open No. 8-126200, Name “Demand Control System”

６．６ｋＶ高電圧の電力料金が従来の単相３線式１００Ｖ／２００Ｖ受電より安価になる傾向から、受電設備の経済性向上が可能であれば空調用電力ウエイトが大きい小規模店舗などで、高圧受電方式への切替え契約の需要が増加するというニーズが出てきた。夏場の冷房設備のピーク電力が重なる受電電力を低減させて、１ランク低い電力で、低圧受電より経済的な電力料金の高圧受電契約を結びたい、高圧受電設備を安価に導入する為に、受電電力を平準化して受電最大電力を１ランク低減したい欲求がでてきた。この欲求に応えるための、ピーク受電電力を低減させる電力貯蔵手段と受電手段との複合システムとして、総合して経済的な受電システムを提供することが本発明の課題である。加えて、商用電力の停電時に信頼性の高いバックアップ無停電機能を付加させることが本発明の副次的な目的である。 6.6kV high-voltage power charges tend to be cheaper than the conventional single-phase three-wire 100V / 200V power reception, so if you can improve the economics of the power receiving equipment, There is a need to increase the demand for contracts for switching to high-voltage power receiving systems. Receiving power to introduce high-voltage power receiving equipment at a lower cost, reducing the power received by overlapping the peak power of cooling equipment in the summer, and lowering the power by one rank, and making a high-voltage power receiving contract that is more economical than low-voltage power receiving. There has been a desire to level the power and reduce the maximum power received by one rank. It is an object of the present invention to provide a comprehensive and economical power receiving system as a combined system of power storage means and power receiving means for reducing peak received power to meet this desire. In addition, it is a secondary object of the present invention to add a reliable backup uninterruptible function at the time of commercial power outage.

単相３線式の負荷を運転する場合、夏場のピーク電力を２次電池などの電力貯蔵手段から補い、軽負荷になれば商用電力で賄う。軽負荷時の電力を基準として高圧受電設備の契約電力容量を決めたい。このことに着目し、ピーク消費電力を例えば１１時から１５時までの１日当り４時間程度の電力貯蔵手段を具備するものとし、２４時間中の４時間は[電力貯蔵手段の電力ＰＰ＋経済的な軽負荷電力容量ＬＰ]にＰＰとＬＰを経済設計で決定し、前記軽負荷時の容量との合計電力{ＰＰ＋ＬＰ}がピーク時の最大消費電力となる。但し、ＬＰの値はピーク発生の４時間を除いた１日の中の、負荷最大値を満足させることとする。停電時の供給電力は２次電池などの電力貯蔵手段で賄うが、設定した４時間を越える停電にも対処する為の発電手段として太陽電池パネルと逆流防止手段とを前記電力貯蔵手段に接続する事によって停電時のバックアップの信頼性が高まる。 When operating a single-phase three-wire load, the peak power in summer is supplemented by power storage means such as a secondary battery, and commercial power is provided if the load is light. I want to determine the contract power capacity of high-voltage power receiving equipment based on the power at light load. Paying attention to this, it is assumed that the power storage means has a peak power consumption of, for example, about 4 hours per day from 11:00 to 15:00, and 4 hours in 24 hours are [the power PP of the power storage means + economic PP and LP are determined by economic design for the light load power capacity LP], and the total power {PP + LP} with the light load capacity becomes the maximum power consumption at the peak time. However, the LP value satisfies the maximum load value during the day excluding 4 hours of peak occurrence. Supply power at the time of a power failure is covered by power storage means such as a secondary battery, but a solar cell panel and a backflow prevention means are connected to the power storage means as a power generation means for coping with a power failure exceeding 4 hours set. This increases the reliability of backups during power outages.

請求項１に関しては、電気二重層コンデンサまたは２次電池などの蓄電手段、該蓄電手段の直流を交流に変換する直交変換手段と、蓄電手段と直交変換手段とで形成した交流電力貯蔵手段および、蓄電手段へ直流を制御して供給する制御充電手段、交流電力貯蔵手段の交流出力と商用電力との切替え手段を具備、受電電力量を検知し前記切替え手段を制御する切替え制御装置とを具備し、契約電力を越えた受電電力量を縮小して、交流電力貯蔵手段が負荷に対して受電電力の不足電力量を補給して供給することを特徴とした電力貯蔵と電力縮小受電のシステムとした。 With respect toclaim 1, power storage means such as an electric double layer capacitor or a secondary battery, orthogonal transform means for converting direct current of the power storage means into alternating current, AC power storage means formed by the power storage means and the orthogonal transform means, and A control charging means for controlling and supplying direct current to the power storage means; a switching means for switching between the AC output of the AC power storage means and the commercial power; and a switching control device for detecting the amount of received power and controlling the switching means. The power storage and power reduction power receiving system is characterized in that the amount of received power exceeding the contracted power is reduced, and the AC power storage means supplies and supplies the load with the insufficient amount of received power to the load. .

請求項２に関しては、商用電力を負荷に供給する単相３線式受電手段と、停電時バックアップ接続手段を具備した交流電力貯蔵手段、とトライアックによる停電時バックアップ出力と商用受電配線とを切離す高速遮断手段、電気二重層コンデンサまたは２次電池などの蓄電手段、該蓄電手段の直流を交流に変換する直交変換手段と、直交変換手段の交流出力と商用電力との切替え手段、商用電源が停電時に直交変換手段の交流出力をバックアップ負荷に接続する停電時バックアップ接続手段を具備した交流電力貯蔵手段および、蓄電手段へ直流を制御して供給する充電手段、受電電力量を検知し前記切替え手段を制御する切替え制御装置とを具備し、契約電力を越えた受電電力量を縮小して、交流電力貯蔵手段が負荷に対して受電電力の不足電力量を補給して供給することを特徴とした電力貯蔵と電力縮小受電のシステムとした。 With respect to claim 2, the single-phase three-wire power receiving means for supplying commercial power to the load, the AC power storage means having the backup connection means at the time of power failure, and the backup output at the time of power failure by the triac and the commercial power receiving wiring are separated. High-speed shut-off means, power storage means such as an electric double layer capacitor or a secondary battery, orthogonal transform means for converting the direct current of the power storage means to alternating current, means for switching between the alternating current output of the orthogonal transform means and commercial power, and the commercial power supply is cut off AC power storage means provided with backup connection means during a power failure to connect the AC output of the orthogonal transform means to the backup load, charging means for controlling and supplying direct current to the power storage means, and the switching means for detecting the amount of received power Switching control device to control, reducing the amount of received power exceeding the contracted power, AC power storage means shortage of received power for the load It was systems power storage and power reduction receiving that said supplying and replenishing competence.

請求項３に関しては、前記充電手段が、商用電力を受けて蓄電手段の直流電圧の近似電圧を供給するよう、蓄電手段に接続された出力端子と蓄電手段からの直流出力が接続される直流入力端子とが共通の端子であり、交直・直交の双方向に変換する双方向変換手段を時間シェアで作用させる事ができる制御装置を有する充電手段であることを特徴とした請求項１乃至２記載の電力貯蔵と電力縮小受電のシステム。 According to a third aspect of the present invention, a DC input is connected to an output terminal connected to the power storage means and a DC output from the power storage means so that the charging means receives commercial power and supplies an approximate voltage of the DC voltage of the power storage means. 3. The charging means having a control device capable of operating the bidirectional conversion means for converting to AC / AC / orthogonal bidirectional with time share, wherein the terminal is a common terminal. Power storage and reduced power receiving system.

請求項４に関しては、前記直交変換手段が、商用電力を受けて蓄電手段の直流電圧の近似電圧を供給するよう、蓄電手段に接続された出力端子と蓄電手段からの直流出力が接続される直流入力端子とが、共通の端子であり交直・直交の双方向に変換する双方向変換手段を時間シェアで作用させる事ができる直交変換手段であることを特徴とした請求項１乃至３記載の電力貯蔵と電力縮小受電のシステムとした。 According to a fourth aspect of the present invention, the orthogonal transformation means receives a commercial power and supplies an approximate voltage of the direct current voltage of the power storage means, and the direct current output is connected to the direct current output from the power storage means. 4. The power according toclaim 1, wherein the input terminal is a common terminal and is a quadrature conversion means capable of acting in a time share with a bidirectional conversion means for converting to AC / AC / orthogonal bidirectional. A storage and power reduction system was adopted.

請求項５に関しては、切替え制御装置が直交変換手段の交流出力と商用電力との切替え手段を作動させる前記切替え制御装置が、『ピーク受電電力をカットし、ピーク電力を電力貯蔵手段から補給して負荷に供給する』切替えの判断機能を遂行するＣＰＵを具備した切替え制御装置であり、受電電力を所定の値に抑えることを特徴とした請求項１乃至４記載の電力貯蔵と電力縮小受電のシステムとした。 With respect to the fifth aspect, the switching control device, in which the switching control device operates the switching means between the AC output of the orthogonal transforming means and the commercial power, “cuts the peak received power and replenishes the peak power from the power storage means. 5. The power storage and power reduction power receiving system according toclaim 1, wherein the switching control device comprises a CPU that performs a switching judgment function of "supplied to a load" and suppresses received power to a predetermined value. It was.

請求項６に関しては、太陽電池パネルが前記蓄電手段に並列接続され、該蓄電手段の電力を交流に変換する直交変換手段と、直交変換手段の交流出力と商用電力との切替え手段を具備した交流電力貯蔵手段および、蓄電手段へ直流を供給する充電手段、商用電力を需要家内負荷に供給する高圧受電盤を含む高圧・低圧変圧手段とを具備し、ピーク受電電力をカットし、ピーク電力を補給して負荷に供給し、商用電力が停電時のバックアップ時間の延長機能を有することを特徴とした請求項１乃至５記載の電力貯蔵と電力縮小受電のシステムとした。 According to a sixth aspect of the present invention, the solar cell panel is connected in parallel to the power storage means, and includes an orthogonal transform means for converting the electric power of the power storage means into alternating current, and an alternating current provided with a means for switching between the alternating current output of the orthogonal transform means and the commercial power. Equipped with power storage means, charging means for supplying direct current to power storage means, and high-voltage / low-voltage transformer means including a high-voltage power receiving panel for supplying commercial power to consumer loads, cutting peak received power and replenishing peak power The power storage and reduced power receiving system according to any one ofclaims 1 to 5, wherein the system is supplied to a load and commercial power has a function of extending a backup time during a power failure.

請求項７に関しては、商用電力受電手段として、高圧受電盤を含む高圧・低圧変圧手段とを具備し、太陽電池パネルが、前記蓄電手段に並列接続され、蓄電手段へ直流を供給する充電手段であり、ピーク受電電力を縮小し、交流電力貯蔵手段から、縮小した電力分を補給して特定負荷に供給する電力補給量を増やし、且つ、商用電力購入料金を節減する機能を有することを特徴とした請求項１乃至６記載の電力貯蔵と電力縮小受電のシステムとした。 With regard to claim 7, as a commercial power receiving means, a high-voltage / low-voltage transformer means including a high-voltage power receiving panel is provided, and a solar battery panel is connected in parallel to the power storage means, and charging means for supplying a direct current to the power storage means There is a function of reducing the peak received power, increasing the amount of power supplied to the specified load by supplying the reduced power from the AC power storage means, and reducing the commercial power purchase fee. The power storage and power reduction power receiving system according toclaim 1.

請求項８に関しては、商用電力受電手段として、高圧受電盤を含む高圧・低圧変圧手段とを具備し、燃料電池が前記蓄電手段に並列接続され、蓄電手段へ直流を供給する充電手段であり、ピーク受電電力を縮小し、交流電力貯蔵手段から、縮小した電力分を補給して特定負荷に供給する電力補給量を増やし、且つ、商用電力購入料金を節減する機能を有することを特徴とした請求項１乃至６記載の電力貯蔵と電力縮小受電のシステムとした。 With regard to claim 8, as a commercial power receiving means, comprising a high-voltage and low-voltage transformer means including a high-voltage power receiving board, a fuel cell is connected in parallel to the electricity storage means, and is a charging means for supplying direct current to the electricity storage means, Claims that have a function of reducing the peak received power, increasing the amount of power supplied to the specified load by supplying the reduced power from the AC power storage means, and reducing the commercial power purchase fee The power storage and power reduction power receiving system according toItems 1 to 6.

本発明によれば、需要家の照明、エアコン、電子機器など合計した全負荷が契約電力量を超えないときは商用電力で賄われるが、夏季の昼間のピーク電力が契約電力量を超過しようとした場合は蓄電手段から直交変換動作で双方向変換手段を経て交流がバックアップ負荷に放電され、商用電源から受電する電力量は契約電力量内に抑制される。ピーク電力時間帯を過ぎて全負荷が契約電力量以下で推移する時は、受電電力が交直変換動作で双方向変換手段を経て蓄電手段を充電しながら需要家の照明、エアコン、電子機器など全負荷荷供給されるから、ピーク電力消費の時間帯以外は蓄電手段から放電による電力消費がなく、充電されて翌日のピークに備える。一日の受電電力が平準化されるから、電力を供給する電力会社にとってはピークの為の発電設備がいらない。需要家にとっては契約電力量を縮小して契約でき、電気代、設備費ともに経済的である。さらに負荷が電子レジスタなどの電子機器が突然の停電による損害が発生するものに対しては、停電バックアップ負荷として扱われるから、小規模ショップなどで、電子レジスタなど電子機器に不具合発生が無く副次的な利益がある。 According to the present invention, when the total load of the lighting, air conditioner, electronic device, etc. of the consumer does not exceed the contracted power amount, it is covered by commercial power, but the peak power during the daytime in summer tends to exceed the contracted power amount. In this case, the alternating current is discharged from the power storage means through the bidirectional conversion means by the orthogonal conversion operation to the backup load, and the amount of power received from the commercial power source is suppressed within the contract power amount. When the total load changes below the contracted power amount after the peak power hours, all received lights, air conditioners, electronic devices, etc. are charged while the received power charges the power storage means via the bidirectional conversion means in the AC / DC conversion operation. Since the load is supplied, there is no power consumption due to discharging from the power storage means except during the peak power consumption time period, and the battery is charged to prepare for the peak of the next day. Since the received power of the day is leveled, there is no need for a power generation facility for the peak for the power company supplying the power. For customers, contracts can be contracted with a contracted amount of electricity, which is economical in terms of both electricity costs and equipment costs. In addition, if an electronic device such as an electronic register is damaged due to a sudden power failure, it will be treated as a power outage backup load. There is a profit.

図１は本発明による第１実施の形態を示す回路図。図２は本発明による第２実施の形態を示す回路図である。図２を補足しつつ、図１に従って説明すると、蓄電手段１は、２次電池や電気二重層コンデンサである。太陽電池パネル２や燃料電池３が開閉手段２１、３１を介して蓄電手段１に並列に接続される場合がある。４は特定負荷でピーク電力を生じる機器がこれに当てられ、５は双方向変換手段であり蓄電手段１へ直流を制御して供給する制御充電手段１７および該蓄電手段１の直流を交流に変換する直交変換手段として時間シェアで二機能を遂行する。６は重要負荷であり、停電時バックアップ給電される。７は直流入出力端子（＋極）であり時間シェアで入力端子と出力端子となる。８は直流入出力端子（−極）であり時間シェアで入力端子と出力端子とに作用する。９は一般負荷（停電時のバックアップなしの負荷）４０は商用電力受電手段で高圧受電盤４１を含む単相３線式の受電手段を示している。例えば,6.6ｋVの三相高圧を単相三線式の200Ｖ／100Ｖに変圧受電する設備である。１１は開閉手段、１２は電力メータであり、購入する受電電力量を計測している。２２は高速遮断手段であり、トライアックなどの半導体スイッチング素子で形成される。蓄電手段１と双方向変換手段５とで形成される交流電力貯蔵手段１０および、受電電力量を検知し負荷接続切替え手段１５、１６を制御する負荷接続切替え制御装置１４とを具備する。 FIG. 1 is a circuit diagram showing a first embodiment according to the present invention. FIG. 2 is a circuit diagram showing a second embodiment according to the present invention. Referring to FIG. 1 while supplementing FIG. 2, the power storage means 1 is a secondary battery or an electric double layer capacitor. In some cases, the solar cell panel 2 and the fuel cell 3 are connected in parallel to the power storage means 1 via the opening / closing means 21 and 31. 4 is a device that generates a peak power at a specific load, and 5 is a bidirectional conversion means, which controls and supplies direct current to the power storage means 1 and converts the direct current of the power storage means 1 into alternating current. It performs two functions with time sharing as an orthogonal transform means. 6 is an important load, and is backed up during a power failure. Reference numeral 7 denotes a DC input / output terminal (+ pole), which becomes an input terminal and an output terminal with time sharing. Reference numeral 8 denotes a DC input / output terminal (-pole), which acts on the input terminal and the output terminal with time sharing.Reference numeral 9 denotes a general load (a load without backup at the time of a power failure) 40 denotes a commercial power receiving means, which is a single-phase three-wire type receiving means including a highvoltage receiving board 41. For example, a facility that transforms and receives a three-phase high voltage of 6.6 kV into a single-phase three-wire 200V / 100V. 11 is an opening / closing means, and 12 is a power meter, which measures the amount of received power to be purchased. Reference numeral 22 denotes a high-speed shut-off means, which is formed of a semiconductor switching element such as a triac. An AC power storage unit 10 formed by thepower storage unit 1 and the bidirectional conversion unit 5 and a load connection switching control device 14 that detects the amount of received power and controls the load connection switching units 15 and 16 are provided.

負荷接続切替え制御装置１４の機能は、契約電力を越えない軽負荷受電時は該制御充電手段１７が蓄電手段１へ直流を制御して供給し、契約電力を越えそうな重い負荷時は、受電電力量を縮小受電するよう、特定負荷４に対して契約電力を越えるピーク電力に見合う不足受電分を交流電力貯蔵手段１０が供給するように負荷接続切替え手段１６を双方向変換手段５の出力端子７に接続し、直交変換手段として双方向変換手段５を動作させる。契約電力を越えそうな受電電力になった事を監視するのは、電力メータ１２に付属させたピーク接近検知手段１３である。 The function of the load connection switching control device 14 is such that the control charging means 17 controls and supplies a direct current to the power storage means 1 when receiving a light load that does not exceed the contract power, and receives a heavy load that is likely to exceed the contract power. The load connection switching means 16 is connected to the output terminal of the bidirectional conversion means 5 so that the AC power storage means 10 supplies the insufficient power received corresponding to the peak power exceeding the contract power to the specific load 4 so as to reduce the amount of electric power. 7 to operate the bidirectional conversion means 5 as the orthogonal transformation means. The peak approach detection means 13 attached to the power meter 12 monitors that the received power is likely to exceed the contract power.

図２に従って第２の実施形態を説明すると、蓄電手段１は、２次電池や電気二重層コンデンサである。逆流防止手段付き太陽電池パネル２が開閉手段２１を介して蓄電手段１に並列に接続される場合があり、燃料電池３が開閉手段３１を介して蓄電手段１に並列に接続される場合がある。需要家の照明、エアコン、電子機器など合計した全負荷が契約電力量を超えない軽負荷のときは商用受電電力の範囲内で賄われるが、夏季の昼間などのピーク電力が契約電力量を超過しようとした場合は蓄電手段１から放電し、直交変換動作で双方向変換手段５を経て交流が特定負荷４に対して給電され、商用電源から受電する電力量は契約電力量内に抑制される。ピーク電力時間帯を過ぎて全負荷が契約電力量以下で推移する時は、受電電力が交直変換動作で双方向変換手段を経て蓄電手段１を充電しながら需要家の照明、エアコン、電子機器など全負荷荷供給されるから、ピーク電力消費の時間帯以外は蓄電手段１から放電による電力消費がなく、充電されて翌日の電力ピークに備える。太陽電池パネル２が、蓄電手段に並列接続され、蓄電手段１へ直流を供給する充電手段であり、ピーク受電電力を縮小し、交流電力貯蔵手段１０から、縮小した分の電力を補給して特定負荷４に供給可能時間を延長可能とし、且つ、商用電力が停電時にはバックアップ時間を延長させる機能をもつ。 The second embodiment will be described with reference to FIG. 2. The power storage means 1 is a secondary battery or an electric double layer capacitor. The solar battery panel 2 with backflow prevention means may be connected in parallel to the power storage means 1 via the opening / closing means 21, and the fuel cell 3 may be connected in parallel to the power storage means 1 via the opening / closing means 31. . When the total load of consumer lighting, air conditioners, electronic devices, etc., is light load that does not exceed the contracted power amount, it is covered within the range of commercial received power, but peak power during the daytime in summer exceeds the contracted power amount If an attempt is made, the power storage means 1 is discharged, the alternating current is supplied to the specific load 4 via the bidirectional conversion means 5 in the orthogonal conversion operation, and the amount of power received from the commercial power source is suppressed within the contract power amount. . When the total load changes below the contracted power amount after the peak power time period, the received power is charged to the power storage means 1 through the bidirectional conversion means in the AC / DC conversion operation, while lighting the consumer, air conditioner, electronic equipment, etc. Since the full load is supplied, there is no power consumption due to discharging from the power storage means 1 except during the peak power consumption time period, and the battery is charged to prepare for the next power peak. The solar cell panel 2 is a charging unit that is connected in parallel to the power storage unit and supplies a direct current to thepower storage unit 1. The peak received power is reduced and specified by supplying the reduced power from the AC power storage unit 10. The load 4 can be supplied for an extended period of time, and has a function of extending the backup time when the commercial power fails.

負荷接続切替え制御装置１４は、直交変換手段１８の交流出力と商用受電配線２３との切替えをする接続切替え手段１５を作動させる。ピーク受電電力を縮小し、ピーク電力を交流電力貯蔵手段１０から補給する様に直交変換手段１８を作動させて特定負荷４に交流を供給する、切替えの判断機能と、直交変換手段１８に駆動信号を与える指令を遂行するＣＰＵを具備した制御装置である。駆動信号回路Ｔ１から高速遮断手段２２に駆動信号を出力し，駆動信号回路Ｔ２から接続切替え手段１６に駆動信号を出力し特定負荷４に対し交流電力貯蔵手段１０から補給する交流を供給する。直交変換手段１８は、商用電力を受けて蓄電手段１の直流電圧の近似電圧を供給するよう、蓄電手段１に接続された出力端子７、８と蓄電手段１からの直流出力が接続される直流入力端子７、８とが共用される端子であり、ダイオードとスイッチング素子の逆並列接続体でブリッジ接続構成された交直と直交の双方向に変換する双方向変換手段５を時間シェアで直流を交流に変換作用させる電力変換手段である。停電検知器２０が商用電源の停電を検知した時は、重要負荷６にバックアップ電源を接続する接続切替手段１５が受電から停電に切りわってもトライアックの高速遮断手段２２で商用配電線２３側から接続するので停電時にも無停電で給電され、このシステムの副次的利点である。 The load connection switching control device 14 operates the connection switching unit 15 that switches between the AC output of theorthogonal transformation unit 18 and the commercial power receiving wiring 23. A switching judgment function for reducing the peak received power and supplying the alternating load to the specific load 4 by operating the orthogonal transformation means 18 so as to replenish the peak power from the AC power storage means 10 and a drive signal to the orthogonal transformation means 18 It is the control apparatus which equipped with CPU which performs the command which gives. A drive signal is output from the drive signal circuit T1 to the high-speed shut-off means 22, and a drive signal is output from the drive signal circuit T2 to the connection switching means 16 to supply alternating current to be supplied from the AC power storage means 10 to the specific load 4. The orthogonal transformingmeans 18 receives the commercial power and supplies the DC voltage from the power storage means 1 to the output terminals 7 and 8 connected to the power storage means 1 so as to supply an approximate voltage of the direct current voltage of the power storage means 1. The input terminals 7 and 8 are shared terminals, and the bi-directional conversion means 5 for converting bi-directionally and orthogonally in a bridge connection configuration with an antiparallel connection body of a diode and a switching element is used to exchange direct current with alternating current. It is the power conversion means which makes the conversion action. When the power failure detector 20 detects a power failure of the commercial power source, even if the connection switching means 15 for connecting the backup power source to the important load 6 is switched from the power reception to the power failure, the triac high-speed interruption means 22 from the commercial distribution line 23 side. Since it is connected, power is supplied without interruption even during a power failure, which is a secondary advantage of this system.

図１、図２に示す回路図で停電時の動作を説明する。商用電力を負荷に供給する単相３線式受電手段と、停電時バックアップ給電される重要負荷６に接続手段として接続切替え手段１５具備した。トライアックによる停電時バックアップ出力端子７、と商用受電配線２３とを切離す高速遮断手段２２と、これに直列接続された開閉手段１９とを具備し逆潮流を防止した。蓄電手段１、該蓄電手段の直流を交流に変換する直交変換手段１８と、これの交流出力と商用電力との切替える接続切替え手段１５を具備し、交流電力貯蔵手段１０から重要負荷６にバックアップ給電する。 The operation during a power failure will be described with reference to the circuit diagrams shown in FIGS. A connection switching means 15 is provided as a connection means for a single-phase three-wire power receiving means for supplying commercial power to a load and an important load 6 to be backed up during a power failure. A high-speed shut-off means 22 for disconnecting the backup output terminal 7 at the time of a power failure due to triac and the commercial power receiving wiring 23 and an opening / closing means 19 connected in series with the backup output terminal 7 are provided to prevent reverse power flow. The power storage means 1, the orthogonal transformation means 18 for converting the direct current of the power storage means into alternating current, and the connection switching means 15 for switching between the alternating current output and the commercial power are provided, and backup power is supplied from the alternating current power storage means 10 to the important load 6. To do.

図３に本発明実施形態の動作説明図を示す、Ｘ軸は経過時間、Ｙ軸は受電設備の消費する電力量である。１１時から１５時までがピーク時間帯である。点Ｐ、点Ｒは契約電力量であって、この値によって電気料金と設備費が変わる。１ランクでも下げて合理化したい。斜線部分Ｑは、本システムで貯蔵した電力から補給して特定負荷に給電する、契約電力量ＲをＰ点まで縮小する効果を発揮させるのが本システムである。 FIG. 3 is a diagram for explaining the operation of the embodiment of the present invention. The X axis is the elapsed time, and the Y axis is the amount of power consumed by the power receiving equipment. The peak hours are from 11:00 to 15:00. Points P and R are contract power amounts, and the electricity charges and the facility costs vary depending on these values. I want to rationalize by reducing even one rank. The shaded portion Q is the present system that exhibits the effect of reducing the contracted power amount R to the point P, which is replenished from the power stored in the system and supplied to a specific load.

一層合理化を進めるには、高圧受電盤４１を含む高圧・低圧変圧手段を具備し高圧受電契約する。燃料電池３が前記蓄電手段１に並列接続され、蓄電手段１へ直流を供給する方法も有効である。交流電力貯蔵手段１０から、ピーク電力の大きい特定負荷４に供給する電力補給量を増やし、低い受電電力量へと平準化をして、商用電力料金を節減する機能が強化できた。 For further rationalization, a high-voltage / low-voltage transformer including a high-voltagepower receiving panel 41 is provided and a high-voltage power receiving contract is made. A method in which the fuel cell 3 is connected in parallel to the power storage means 1 and DC is supplied to the power storage means 1 is also effective. The power supply amount supplied from the AC power storage means 10 to the specific load 4 having a large peak power is increased and leveled to a lower received power amount, thereby enhancing the function of reducing the commercial power charge.

本発明による実施形態によれば、需要家の電気代節減と、電力供給側のピーク電力設備の節減にも貢献でき地球環境保全に寄与でき、さらに重要負荷にたいして無停電電源として作動する効果もある。 According to the embodiment of the present invention, it is possible to contribute to the saving of electricity for consumers and the saving of peak power facilities on the power supply side, contribute to global environmental conservation, and also has an effect of operating as an uninterruptible power supply for important loads. .

本発明による第１実施の形態を示す回路図。The circuit diagram which shows 1st Embodiment by this invention.本発明による第２実施の形態を示す回路図。The circuit diagram which shows 2nd Embodiment by this invention.本発明による実施の動作説明図。Operation | movement explanatory drawing of implementation by this invention.

符号の説明Explanation of symbols

１蓄電手段
２太陽電池パネル
３燃料電池
４特定負荷
５双方向変換手段
６重要負荷（バックアップ給電される負荷）
７出力端子（＋極）（時間シェアで入力端子）
８出力端子（−極）（時間シェアで入力端子）
９一般負荷
１０交流電力貯蔵手段
１１開閉手段
１２電力メータ
１３ピーク接近検知手段
１４負荷接続切替え制御装置
１５接続切替え手段（重要負荷用）
１６接続切替え手段（特定負荷用）
１７制御充電手段
１８直交変換手段
１９開閉手段
２０停電検知器
２１開閉手段
２２高速遮断手段（トライアック）
２３商用受電配線
３１開閉手段
４０商用電力受電手段
４１高圧受電盤DESCRIPTION OFSYMBOLS 1 Power storage means 2 Solar cell panel 3 Fuel cell 4 Specific load 5 Bidirectional conversion means 6 Important load (load to be backed up)
7 Output terminal (+ pole) (Input terminal with time share)
8 Output terminal (-pole) (Input terminal with time share)
9 General load 10 AC power storage means 11 Open / close means 12 Power meter 13 Peak approach detection means 14 Load connection switching control device 15 Connection switching means (for important load)
16 Connection switching means (for specific load)
17 Control charging means 18 Orthogonal transformation means 19 Opening and closing means 20 Power failure detector 21 Opening and closing means 22 High-speed shut-off means (Triac)
23 Commercialpower receiving wiring 31 Opening / closing means 40 Commercial power receiving means 41 High voltage power receiving panel

Claims

Translated fromJapanese

商用電力受電手段、電気二重層コンデンサまたは２次電池などの蓄電手段、該蓄電手段の直流を交流に変換する直交変換手段および、該蓄電手段と該直交変換手段とで形成される交流電力貯蔵手段および、
蓄電手段へ直流を制御して供給する制御充電手段と、
受電電力量を検知し負荷接続切替え手段を制御する負荷接続切替え制御装置とを具備し、契約電力を越えない軽負荷受電時は該充電制御手段が蓄電手段へ直流を制御して供給し、重負荷時は、契約電力を越えた受電電力量を縮小受電するよう、負荷に対して契約電力を越えた受電電力に見合う不足電力を交流電力貯蔵手段が補給して供給することを特徴とした電力貯蔵と電力縮小受電のシステム。
Power storage means such as commercial power receiving means, electric double layer capacitor or secondary battery, orthogonal transform means for converting direct current of the power storage means into alternating current, and AC power storage means formed by the power storage means and the orthogonal transform means and,
Control charging means for controlling and supplying direct current to the storage means;
A load connection switching control device that detects the amount of received power and controls the load connection switching means, and when the light load is received that does not exceed the contract power, the charge control means controls the direct current to the power storage means and supplies it. Electric power storage means that the AC power storage means supplies and supplies insufficient power corresponding to the received power exceeding the contract power to the load so that the received power amount exceeding the contract power is reduced when receiving the load. Storage and power reduction system.

商用電力を負荷に供給する単相３線式受電手段と、電気二重層コンデンサまたは２次電池などの蓄電手段、該蓄電手段の直流を交流に変換する直交変換手段と、該蓄電手段と該直交変換手段とで形成される交流電力貯蔵手段および、蓄電手段へ直流を制御して供給する制御充電手段、負荷接続切替え手段と、トライアック等の半導体スイッチング素子による停電時バックアップ出力を商用受電配線から切離す高速遮断手段と、商用電源が停電時に該交流電力貯蔵手段の交流出力をバックアップ負荷に接続する停電時バックアップ接続手段、受電電力量を検知し前記負荷接続切替え手段を制御する負荷接続切替え制御装置とを具備し、契約電力を越えた受電電力量を縮小受電するよう、負荷に対して契約電力を越えた受電電力に見合う不足電力を交流電力貯蔵手段が補給すると共に、商用電源が停電時に前記交流電力貯蔵手段の交流出力をバックアップ負荷に供給することを特徴とした電力貯蔵と電力縮小受電のシステム。
Single-phase three-wire power receiving means for supplying commercial power to the load, power storage means such as an electric double layer capacitor or a secondary battery, orthogonal transform means for converting the direct current of the power storage means into alternating current, the power storage means and the orthogonal AC power storage means formed by conversion means, control charging means for controlling and supplying direct current to power storage means, load connection switching means, and backup output during power failure by semiconductor switching elements such as triacs from commercial power supply wiring A high-speed shut-off means for separating, a backup connection means for connecting the AC output of the AC power storage means to the backup load when the commercial power supply is interrupted, a load connection switching control device for detecting the amount of received power and controlling the load connection switching means In order to reduce the amount of received power that exceeds the contract power, the power is insufficient for the load to match the received power that exceeds the contract power. With AC electric power storage means to replenish the system of the electric power storage and power reduction receiving that characterized in that the commercial power is supplied to the backup load AC output of the AC electric power storage means during a power outage.

前記制御充電手段が、
商用電力を受けて蓄電手段の直流電圧の近似電圧を供給するよう、蓄電手段に接続された出力端子と蓄電手段からの直流出力が接続される直流入力端子とが共通の端子であり、交直・直交の双方向に変換する双方向変換手段を時間シェアで交直変換作用させ充電電流制御又は、充電電圧制御する、制御回路を有する制御充電手段である
ことを特徴とした請求項１乃至２記載の電力貯蔵とピーク電力縮小受電のシステム。
The control charging means;
The output terminal connected to the power storage means and the DC input terminal connected to the DC output from the power storage means are common terminals so as to receive commercial power and supply an approximate voltage of the DC voltage of the power storage means. 3. The control charging means having a control circuit for performing charging / current control or charging voltage control by performing an AC / DC conversion operation in a time share on a bidirectional conversion means for converting to an orthogonal bidirectional direction. Power storage and peak power reduction receiving system.

前記直交変換手段が、
商用電力を受けて蓄電手段の直流電圧の近似電圧を供給するよう、蓄電手段に接続された出力端子と蓄電手段からの直流出力が接続される直流入力端子とが共通の端子であり、ダイオードとスイッチング素子の逆並列接続体でブリッジ接続構成された交直・直交の双方向に変換する双方向変換手段を時間シェアで直流を交流に変換作用させる直交変換手段である
ことを特徴とした請求項１乃至３記載の電力貯蔵と電力縮小受電のシステム。
The orthogonal transform means comprises:
The output terminal connected to the power storage means and the DC input terminal connected to the DC output from the power storage means are common terminals so as to receive commercial power and supply an approximate voltage of the DC voltage of the power storage means, and the diode and 2. The orthogonal conversion means for converting a direct current into an alternating current in a time-sharing manner, wherein the bidirectional conversion means for converting to AC / AC / orthogonal bidirectionally configured in a bridge connection with an antiparallel connection body of switching elements is used. A system for storing power and receiving reduced power according to any of claims 1 to 3.

負荷接続切替え制御装置が、
直交変換手段の交流出力と商用電力との切替え手段を作動させる負荷接続切替え制御装置であり、
ピーク受電電力を縮小し、縮小分の電力を電力貯蔵手段から補給して特定負荷に供給するよう、負荷接続切替えの判断機能を遂行するＣＰＵを具備した負荷接続切替え制御装置である
ことを特徴とした請求項１乃至４記載の電力貯蔵と電力縮小受電のシステム。
The load connection switching control device
A load connection switching control device for operating a switching means between the AC output of the orthogonal transformation means and the commercial power,
A load connection switching control device including a CPU that performs a load connection switching determination function so as to reduce peak received power and supply the reduced power from the power storage means to a specific load. The power storage and power reduction power receiving system according to claim 1.

太陽電池パネルが、
前記蓄電手段に並列接続され、蓄電手段へ直流を供給する充電手段であり、ピーク受電電力を縮小し、交流電力貯蔵手段から、縮小した電力分を補給して特定負荷に供給する時間を増加させ延長可能とし、且つ、商用電力が停電時のバックアップ時間の延長機能を有することを特徴とした請求項１乃至５記載の電力貯蔵と電力縮小受電のシステム。
Solar panel,
Charging means connected in parallel to the power storage means and supplying direct current to the power storage means, reducing the peak received power and increasing the time to supply the reduced power from the AC power storage means to supply to a specific load. 6. The power storage and power reduction power receiving system according to claim 1, wherein the system can be extended, and the commercial power has a function of extending the backup time in the event of a power failure.

商用電力受電手段として、高圧受電盤を含む高圧・低圧変圧手段とを具備し、太陽電池パネルが、前記蓄電手段に並列接続され、蓄電手段へ直流を供給する充電手段であり、ピーク受電電力を縮小し、交流電力貯蔵手段から、縮小した電力分を補給して特定負荷に供給する電力補給量を増やし、且つ、商用電力購入料金を節減する機能を有することを特徴とした請求項１乃至６記載の電力貯蔵と電力縮小受電のシステム。
The commercial power receiving means includes a high-voltage / low-voltage transformer means including a high-voltage power receiving panel, and a solar cell panel is a charging means that is connected in parallel to the power storage means and supplies a direct current to the power storage means. 7. A function of reducing and increasing the amount of electric power supplied to a specific load by supplying the reduced electric power from the AC power storage means, and reducing the commercial power purchase fee. The described power storage and reduced power receiving system.

商用電力受電手段として、高圧受電盤を含む高圧・低圧変圧手段とを具備し、燃料電池が前記蓄電手段に並列接続され、蓄電手段へ直流を供給する充電手段であり、ピーク受電電力を縮小し、交流電力貯蔵手段から、縮小した電力分を補給して特定負荷に供給する電力補給量を増やし、且つ、商用電力購入料金を節減する機能を有することを特徴とした請求項１乃至６記載の電力貯蔵と電力縮小受電のシステム。 The commercial power receiving means includes a high-voltage / low-voltage transformer means including a high-voltage power receiving panel, and a fuel cell is connected to the power storage means in parallel, and is a charging means for supplying direct current to the power storage means, reducing the peak received power. 7. A function of replenishing the reduced amount of power from the AC power storage means to increase the amount of power replenished to be supplied to the specific load, and to reduce the commercial power purchase fee. Power storage and power reduction system.