[go: up one dir, main page]

JP2014239558A - Power supply system - Google Patents

Power supply system Download PDF

Info

Publication number
JP2014239558A
JP2014239558A JP2011212087A JP2011212087A JP2014239558A JP 2014239558 A JP2014239558 A JP 2014239558A JP 2011212087 A JP2011212087 A JP 2011212087A JP 2011212087 A JP2011212087 A JP 2011212087A JP 2014239558 A JP2014239558 A JP 2014239558A
Authority
JP
Japan
Prior art keywords
power
generation device
power generation
amount
power supply
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
Application number
JP2011212087A
Other languages
Japanese (ja)
Inventor
裕章 加来
Hiroaki Kako
裕章 加来
加藤　玄道
Gendo Kato
玄道 加藤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Corp
Original Assignee
Panasonic Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Panasonic Corp filed Critical Panasonic Corp
Priority to JP2011212087A priority Critical patent/JP2014239558A/en
Priority to PCT/JP2012/006179 priority patent/WO2013046685A1/en
Publication of JP2014239558A publication Critical patent/JP2014239558A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/46—Accumulators structurally combined with charging apparatus
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for AC mains or AC distribution networks
    • H02J3/28—Arrangements for balancing of the load in a network by storage of energy
    • H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for AC mains or AC distribution networks
    • H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H02J3/381—Dispersed generators
    • H02J7/575—
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • H02J9/062—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for AC powered loads
    • 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

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Chemical & Material Sciences (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Supply And Distribution Of Alternating Current (AREA)
  • Stand-By Power Supply Arrangements (AREA)
  • Secondary Cells (AREA)
  • Fuel Cell (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

【課題】蓄電装置からの電力供給のみで発電装置が起動する場合、蓄電装置の蓄電残量が発電装置の起動処理に必要な電力量より小さいときは発電装置の起動を禁止することで、蓄電装置からの電力供給不足による発電装置の起動中の不要な停止を防ぐことができる電力供給システムを提供することを目的とする。【解決手段】自立電力負荷１０３に電力を供給する蓄電装置１０４と、蓄電装置１０４から供給される電力により起動し、発電した電力を自立電力負荷１０３に供給する発電装置１０５と、蓄電装置１０４に残っている蓄電残量が、発電装置１０５を起動するために必要な起動電力量より小さいと判定した場合に、前記発電装置の起動を禁止する電力供給システム。【選択図】図１When a power generation device is started only by power supply from a power storage device, if the remaining amount of power stored in the power storage device is smaller than the amount of power required for the power generation device startup process, the power generation device is prohibited from starting. An object of the present invention is to provide a power supply system capable of preventing an unnecessary stop during start-up of a power generation device due to insufficient power supply from the device. A power storage device 104 that supplies power to a stand-alone power load 103, a power generation device 105 that is activated by power supplied from the power storage device 104, and that supplies generated power to a stand-alone power load 103, and a power storage device 104 A power supply system that prohibits starting of the power generation device when it is determined that the remaining amount of stored electricity is smaller than the amount of startup power required to start the power generation device 105. [Selection] Figure 1

Description

本発明は、蓄電装置からの電力供給により起動を行う発電装置を備える電力供給システムに関するものである。   The present invention relates to a power supply system including a power generation device that is activated by power supply from a power storage device.

従来、この種の電力供給システムは、例えば図３に示す構成が開示されている（例えば、特許文献１参照）。図３は、従来の電力供給システムのブロック図である。従来の電力供給システムは、は系統電源１１（商用電源）、燃料電池システム１２、負荷１３、分電盤１４、切り離しスイッチ１５、自立運転支援装置１６を備えている。   Conventionally, for example, a configuration shown in FIG. 3 is disclosed for this type of power supply system (see, for example, Patent Document 1). FIG. 3 is a block diagram of a conventional power supply system. The conventional power supply system includes a system power supply 11 (commercial power supply), a fuel cell system 12, a load 13, a distribution board 14, a disconnect switch 15, and a self-sustained operation support device 16.

ここで、系統電源１１は、単相三線式あるいは三相三線式で交流電力を供給する。   Here, the system power supply 11 supplies AC power in a single-phase three-wire system or a three-phase three-wire system.

燃料電池システム１２は、直流電力を発生する燃料電池スタック２１と、燃料電池スタック２１からの直流電力を系統電源１１に連系した交流電力に変換するパワーコンディショナ２２とを備えている。パワーコンディショナ２２は、発電電力を系統電源１１からの電力と重畳して負荷１３へ供給するとともに、系統電源１１の停電時には、燃料電池システム１２を自立運転させて負荷１３に電力を供給する。分電盤１４は、切り離しスイッチ１５を介して系統電源１１に接続するとともに、燃料電池システム１２と負荷１３が接続しており、分電盤１４内には、系統電源１１の停電時に燃料電池システム１２を解列するための解列スイッチ１７が設けられている。   The fuel cell system 12 includes a fuel cell stack 21 that generates DC power, and a power conditioner 22 that converts the DC power from the fuel cell stack 21 into AC power linked to the system power supply 11. The power conditioner 22 superimposes the generated power with the power from the system power supply 11 and supplies it to the load 13, and supplies the power to the load 13 by operating the fuel cell system 12 independently during a power failure of the system power supply 11. The distribution board 14 is connected to the system power supply 11 via the disconnect switch 15, and the fuel cell system 12 and the load 13 are connected. The distribution panel 14 has a fuel cell system in the event of a power failure of the system power supply 11. A disconnect switch 17 for disconnecting 12 is provided.

自立運転支援装置１６は、燃料電池システム１２と分電盤１４との間の配電線に対する接続点３１と、この接続点３１に対して出力が接続した電圧制御型のインバータ３２と、インバータ３２に対して供給される直流電力を蓄える蓄電装置３３と、接続点３１に接続し、燃料電池システム１２が発生する交流電力のうちの余った電力を消費する負荷調整器３４と、接続点３１に接続し、接続点３１から取り込んだ交流電力を直流電力に変換して充電のために蓄電装置３３に供給する充電用コンバータ３５と、太陽光発電装置やエンジン発電装置などの補助電源装置３７を備えている。   The autonomous driving support device 16 includes a connection point 31 for the distribution line between the fuel cell system 12 and the distribution board 14, a voltage-controlled inverter 32 whose output is connected to the connection point 31, and an inverter 32. Connected to the power storage device 33 for storing the DC power supplied to the power supply device 33 and the connection point 31, and connected to the connection point 31, and the load regulator 34 that consumes excess power of the AC power generated by the fuel cell system 12. A charging converter 35 that converts AC power taken in from the connection point 31 into DC power and supplies it to the power storage device 33 for charging, and an auxiliary power source device 37 such as a solar power generation device or an engine power generation device. Yes.

以上のように構成された電力供給システムは、系統電源１１が正常に動作している場合、系統電源１１に連系する燃料電池システム１２の電力を系統電源１１の電力に重畳し、負荷１３へ供給すると共に、自立運転支援装置１６は、接点３１から取り込んだ交流電力を充電用コンバータ３５によって直流に変換することにより蓄電装置３３に直流電力を蓄える。   In the power supply system configured as described above, when the system power supply 11 is operating normally, the power of the fuel cell system 12 linked to the system power supply 11 is superimposed on the power of the system power supply 11 to the load 13. In addition to supplying, the autonomous driving support device 16 stores the DC power in the power storage device 33 by converting the AC power taken in from the contact 31 into DC by the charging converter 35.

一方、系統電源１１が停電した場合、切り離しスイッチ１５及び解列スイッチ１７がいったん遮断状態となり、その後、燃料電池システム１２を自立運転モードで再起動させた場合には、切り離しスイッチ１５を遮断状態としたまま解列スイッチ１７を導通状態とし、燃料電池システム１２からの交流電力のみを負荷１３に供給できるようにする。このとき、自立運転支援装置１６は、系統電源１１が停電となった状態で燃料電池システム１２を始動させるために、蓄電装置３３に蓄積されている直流電力を燃料電池システム１２に供給する。なお、蓄電装置３３から供給される電力が不足する場合には、補助電源装置３７から電力供給する。   On the other hand, when the system power supply 11 fails, the disconnection switch 15 and the disconnection switch 17 are temporarily cut off. After that, when the fuel cell system 12 is restarted in the self-sustaining operation mode, the disconnection switch 15 is turned off. In this state, the disconnect switch 17 is turned on so that only AC power from the fuel cell system 12 can be supplied to the load 13. At this time, the autonomous driving support device 16 supplies the DC power stored in the power storage device 33 to the fuel cell system 12 in order to start the fuel cell system 12 in a state where the system power supply 11 has failed. Note that, when the power supplied from the power storage device 33 is insufficient, power is supplied from the auxiliary power supply device 37.

特開２００８―０２２６５０号公報JP 2008-022650 A

しかしながら、前記従来の構成では、蓄電装置からの電力供給のみで発電装置が起動する場合、蓄電装置の蓄電残量によっては、蓄電装置から発電装置に対して起動処理に必要な電力を供給することができず、発電装置が起動中に電力が途絶えることで電源ダウンしてしまい、発電装置が起動処理に要した電力を無駄にすると共に、発電装置は、電源ダウンにより正常な停止処理を行うことができず、装置内の機器がストレスを受けることで劣化、寿命を短縮するという課題を有していた。   However, in the conventional configuration, when the power generation device is started only by supplying power from the power storage device, the power necessary for the startup process is supplied from the power storage device to the power generation device depending on the remaining amount of power stored in the power storage device. Power generation is interrupted when the power generation device is starting up and power is shut down, and the power generation device wastes the power required for the start-up process, and the power generation device performs normal stop processing by powering down. However, the apparatus in the apparatus suffers from the problem of deterioration and shortening the service life due to stress.

本発明は、蓄電装置からの電力供給不足による発電装置の起動中の不要な停止を防ぐことができる電力供給システムを提供することを目的とする。   An object of the present invention is to provide a power supply system that can prevent an unnecessary stop during start-up of a power generation device due to insufficient power supply from a power storage device.

前記従来の課題を解決するために、本発明の電力供給システムは、電力負荷に電力を供給する蓄電装置と、前記蓄電装置から供給される電力により起動し、発電した電力を前記電力負荷に供給する発電装置と、前記蓄電装置に残っている蓄電残量が、前記発電装置を起動するために必要な起動電力量より小さいか否かを判定する判定装置とを備えている。そして、前記判定装置が、前記蓄電装置に残っている蓄電残量が前記発電装置を起動するために必要な起動電力量より小さいと判定した場合に、前記発電装置の起動を禁止する。   In order to solve the conventional problems, a power supply system of the present invention includes a power storage device that supplies power to a power load, and the power supply that is activated by the power supplied from the power storage device and supplies the generated power to the power load. And a determination device that determines whether or not the remaining amount of electricity remaining in the power storage device is smaller than the amount of startup power required to start the power generation device. And when the said determination apparatus determines with the electrical storage residual amount remaining in the said electrical storage apparatus being smaller than the starting electric energy required in order to start the said electric power generation apparatus, starting of the said electric power generation apparatus is prohibited.

これによって、蓄電装置からの電力供給のみで発電装置が起動する場合、蓄電装置の蓄電残量が発電装置の起動処理に必要な電力量より小さいときは発電装置の起動を禁止することで、蓄電装置からの電力供給不足による発電装置の起動中の不要な停止を防ぐことができる。   As a result, when the power generation device is started only by supplying power from the power storage device, if the remaining amount of power stored in the power storage device is smaller than the amount of power necessary for the power generation device startup process, the power generation device is prohibited from starting. It is possible to prevent an unnecessary stop during start-up of the power generation device due to insufficient power supply from the device.

本発明の電力供給システムは、蓄電装置からの電力供給のみで発電装置が起動する場合、蓄電装置の蓄電残量が発電装置の起動処理に必要な電力量より小さいときは発電装置の起動をすることで、蓄電装置からの電力供給不足による発電装置の起動中の不要な停止を防ぐことができる。   In the power supply system of the present invention, when the power generation device is activated only by power supply from the power storage device, the power generation device is activated when the remaining amount of power stored in the power storage device is smaller than the amount of power required for the power generation device activation process. Thus, it is possible to prevent an unnecessary stop during start-up of the power generation device due to insufficient power supply from the power storage device.

本発明の実施の形態１における電力供給システムのブロック図Block diagram of a power supply system in Embodiment 1 of the present invention 本発明の実施の形態２における電力供給システムのブロック図The block diagram of the electric power supply system in Embodiment 2 of this invention 従来の電力供給システムのブロック図Block diagram of a conventional power supply system

第１の発明は、電力負荷に電力を供給する蓄電装置と、前記蓄電装置から供給される電力により起動し、発電した電力を前記電力負荷に供給する発電装置と、前記蓄電装置に残っている蓄電残量が、前記発電装置を起動するために必要な起動電力量より小さいか否かを判定する判定装置とを備え、前記判定装置が、前記蓄電装置に残っている蓄電残量が前記発電装置を起動するために必要な起動電力量より小さいと判定した場合に、前記発電装置の起動を禁止する電力供給システムである。そして、蓄電装置からの電力供給のみで発電装置が起動する場合、蓄電装置の蓄電残量が発電装置の起動処理に必要な電力量より小さいときは発電装置の起動を禁止することで、蓄電装置からの電力供給不足による発電装置の起動中の不要な停止を防ぐことができる。   A first invention is a power storage device that supplies power to a power load, a power generation device that is activated by power supplied from the power storage device and supplies generated power to the power load, and remains in the power storage device A determination device that determines whether or not a remaining amount of power storage is smaller than an amount of starting power required to start the power generation device, wherein the determination device determines whether the remaining power storage amount in the power storage device is the power generation The power supply system prohibits the start-up of the power generation device when it is determined that the amount of start-up power is smaller than that required for starting the device. When the power generation device is started only by supplying power from the power storage device, the power storage device is prohibited by starting the power generation device when the remaining amount of power stored in the power storage device is smaller than the amount of power required for the power generation device start processing. It is possible to prevent an unnecessary stop during the start-up of the power generation device due to the lack of power supply from.

第２の発明は、特に、第１の発明において、前記蓄電装置から前記電力負荷への電力供給を接続又は切断する開閉器を備え、前記開閉器は、前記発電装置を起動させる場合、前
記蓄電装置から前記電力負荷への電力供給を切断する電力供給システムである。これにより、蓄電装置の電力を発電装置に確実に供給することが可能となり、蓄電装置からの電力供給不足による発電装置の起動中の不要な停止を防ぐことができる。 In particular, the second invention includes a switch for connecting or disconnecting power supply from the power storage device to the power load in the first invention, and when the switch starts the power generation device, the power storage device It is an electric power supply system which cuts off electric power supply from an apparatus to the electric power load. Accordingly, it is possible to reliably supply the power of the power storage device to the power generation device, and it is possible to prevent an unnecessary stop during startup of the power generation device due to insufficient power supply from the power storage device.

第３の発明は、特に、第１または２のいずれか１つの発明において、前記蓄電装置は、複数の蓄電池で構成されており、前記判定装置は、前記複数の蓄電池に残っている蓄電残量の合計が、前記発電装置を起動するために必要な起動電力量より小さいと判定した場合に、前記発電装置の起動を禁止する。これにより、発電装置が複数の蓄電池からの電力供給で起動する場合、複数の蓄電池の総蓄電残量が発電装置の起動処理に必要な電力量より小さいときは発電装置の起動を禁止することで、蓄電装置からの電力供給不足による発電装置の起動中の不要な停止を防ぐことができる。   In a third aspect of the invention, in particular, in any one of the first and second aspects, the power storage device is configured by a plurality of storage batteries, and the determination device is a remaining power storage amount remaining in the plurality of storage batteries. Is determined to be smaller than the starting power amount required to start the power generation device, the power generation device is prohibited from starting. As a result, when the power generation device is activated by supplying power from a plurality of storage batteries, the activation of the power generation device is prohibited when the total remaining power of the plurality of storage batteries is smaller than the amount of power required for the power generation device activation process. Further, it is possible to prevent an unnecessary stop during the start-up of the power generation device due to insufficient power supply from the power storage device.

第４の発明は、特に、第１から３のいずれか１つの発明において、前記蓄電残量は、前記蓄電池に充電された電力量から過放電防止のための電力量を差し引いた電力量である。これにより、発電装置の起動処理において、蓄電池は過放電による劣化を抑制することができる。   In a fourth aspect of the invention, in particular, in any one of the first to third aspects of the invention, the remaining amount of power storage is an amount of power obtained by subtracting an amount of power for preventing overdischarge from an amount of power charged in the storage battery. . Thereby, in the starting process of the power generation device, the storage battery can suppress deterioration due to overdischarge.

なお、この実施の形態によって本発明が限定されるものではない。   Note that the present invention is not limited to the embodiments.

（実施の形態１）
以下に、本発明の実施の形態１における電力供給システムについて、詳細に説明する。 (Embodiment 1)
Below, the electric power supply system in Embodiment 1 of this invention is demonstrated in detail.

図１は、本発明の実施の形態１における電力供給システムのブロック図である。図１には、系統電源１０１と、一般電力負荷１０２と、自立電力負荷１０３と、蓄電装置１０４と、発電装置１０５と、分電盤１０６と、第３の開閉器１０７と、判定装置１０８を図示している。   FIG. 1 is a block diagram of a power supply system according to Embodiment 1 of the present invention. In FIG. 1, a system power supply 101, a general power load 102, a stand-alone power load 103, a power storage device 104, a power generation device 105, a distribution board 106, a third switch 107, and a determination device 108 are provided. It is shown.

系統電源１０１は、単相三線式あるいは三相三線式の交流電源であり、一般電力負荷１０２に電力を供給する。   The system power supply 101 is a single-phase three-wire or three-phase three-wire AC power supply, and supplies power to the general power load 102.

一般電力負荷１０２は、一般用コンセント（図示せず）に接続されたテレビ、エアコン等などの機器であり、系統電源１０１の正常時に系統電源１０１、蓄電装置１０４、発電装置１０５から供給される交流電力を消費する。自立電力負荷１０３は、自立用コンセント（図示せず）に接続された機器であり、系統電源１０１の停電時に蓄電装置１０４、発電装置１０５から供給される交流電力を消費する。   The general power load 102 is a device such as a television set or an air conditioner connected to a general outlet (not shown), and the AC power supplied from the system power supply 101, the power storage device 104, and the power generation device 105 when the system power supply 101 is normal. Consume power. The self-supporting power load 103 is a device connected to a self-supporting outlet (not shown), and consumes AC power supplied from the power storage device 104 and the power generation device 105 when the system power supply 101 is powered off.

蓄電装置１０４は、蓄電池１０９と、インバータ１１０と、充電用コンバータ１１１と、蓄電残量検出部１１２とを備える。蓄電池１０９は、系統電源１０１又は発電装置１０５から供給される電力を蓄積することができると共に、その蓄積した電力を放出する機能を有する電池である（例えば、リチウムイオン電池や鉛蓄電池などの二次電池）。インバータ１１０は、蓄電池１０９の直流電力を交流電力に変換し、一般電力負荷１０２、または自立電力負荷１０３へ電力を供給する。また、インバータ１１０は、系統電源１０１の停電時には、発電装置１０５が生成する交流電力の周波数や位相の基準となる交流電力を生成する。充電用コンバータ１１１は、系統電源１０１、発電装置１０５から供給される交流電力を直流電力へ変換し、蓄電池１０９への充電を行う。蓄電残量検出部１１２は、蓄電池１０９の蓄電残量を検出する。   The power storage device 104 includes a storage battery 109, an inverter 110, a charging converter 111, and a remaining power storage detection unit 112. The storage battery 109 is a battery that can store the power supplied from the system power supply 101 or the power generation device 105 and has a function of releasing the stored power (for example, a secondary battery such as a lithium ion battery or a lead storage battery). battery). The inverter 110 converts the DC power of the storage battery 109 into AC power and supplies the general power load 102 or the independent power load 103 with power. Further, the inverter 110 generates AC power that serves as a reference for the frequency and phase of the AC power generated by the power generation device 105 when the system power supply 101 is interrupted. Charging converter 111 converts AC power supplied from system power supply 101 and power generation device 105 into DC power, and charges storage battery 109. The remaining power storage detection unit 112 detects the remaining power storage of the storage battery 109.

発電装置１０５は、直流電力を発生する発電機１１３と、発電機１１３からの直流電力を交流電力に変換すると共に、系統電源１０１側の停電を検出して発電装置１０５を解列するパワーコンディショナ１１４とを備えている。そして、発電装置１０５は、系統電源
１０１の正常時には発電電力を系統電源１０１からの電力と重畳して一般電力負荷１０２へ供給する。発電装置１０５は、系統電源１０１の停電時には、自立運転を行い、自立電力負荷１０３に電力を供給するものである。 The power generator 105 generates a DC power, and a power conditioner that converts the DC power from the generator 113 into AC power, and detects a power failure on the system power supply 101 side to disconnect the power generator 105. 114. The power generation apparatus 105 supplies the generated power to the general power load 102 while superimposing the generated power with the power from the system power supply 101 when the system power supply 101 is normal. The power generation device 105 performs a self-sustained operation and supplies power to the self-sustained power load 103 when the power supply of the system power supply 101 is interrupted.

分電盤１０６は、第１の開閉器１１５と第２の開閉器１１６を備え、第３の開閉器１０７を介して系統電源１０１に接続されている。また、系統電源１０１の状態に応じて、蓄電装置１０４、発電装置１０５の電力供給先を、一般電力負荷１０２又は自立電力負荷１０３に切替えるものである。   The distribution board 106 includes a first switch 115 and a second switch 116, and is connected to the system power supply 101 via a third switch 107. Further, the power supply destination of the power storage device 104 and the power generation device 105 is switched to the general power load 102 or the independent power load 103 according to the state of the system power supply 101.

判定装置１０８は、蓄電装置１０４の蓄電残量検出部１１２が検出する蓄電池１０９の蓄電残量が発電装置１０５の起動処理に必要な電力量より小さいか否かを判定する装置である。   The determination device 108 is a device that determines whether or not the remaining amount of electricity stored in the storage battery 109 detected by the remaining amount detection unit 112 of the power storage device 104 is smaller than the amount of power required for the startup process of the power generation device 105.

以上のように構成された電力供給システムの動作および作用について、図１を用いて説明する。   The operation and action of the power supply system configured as described above will be described with reference to FIG.

まず、系統電源１０１が正常時の動作について説明する。系統電源１０１の正常時には、第１の開閉器１１５を導通状態とし、第２の開閉器１１６を解列状態とし、第３の開閉器１０７を導通状態とすることで、系統電源１０１、蓄電装置１０４、発電装置１０５から一般電力負荷１０２及び発電装置１０５へ電力が供給可能な状態とする。ここで、発電装置１０５は系統電源１０１からの電力供給により起動を行い、発電開始後は、系統電源１０１からの電力と重畳して一般電力負荷１０２へ電力を供給する。   First, the operation when the system power supply 101 is normal will be described. When the system power supply 101 is normal, the first switch 115 is turned on, the second switch 116 is disconnected, and the third switch 107 is turned on, so that the system power supply 101, the power storage device 104, It is assumed that power can be supplied from the power generator 105 to the general power load 102 and the power generator 105. Here, the power generation apparatus 105 is activated by supplying power from the system power supply 101, and supplies power to the general power load 102 in superposition with power from the system power supply 101 after the start of power generation.

ここで、発電装置１０５の発電電力より一般電力負荷１０２の消費電力が大きいときは、発電装置１０５の発電電力すべてが一般電力負荷１０２にて消費されるが、逆に、発電装置１０５の発電電力より一般電力負荷１０２の消費電力が小さいときは、余剰電力が発生し、その電力が系統電源１０１へ流れ込もうとする（以下、これを「逆潮流」という）。   Here, when the power consumption of the general power load 102 is larger than the power generated by the power generation device 105, all the power generated by the power generation device 105 is consumed by the general power load 102. When the power consumption of the general power load 102 is smaller, surplus power is generated and the power tries to flow into the system power supply 101 (hereinafter referred to as “reverse power flow”).

燃料電池システム等の発電装置は、電力コストや系統電源１０１の安全面（例えば、逆潮流による交流電圧の上昇）などの関係から逆潮流を防止する必要がある。そこで、蓄電装置１０４は、発電装置１０５の発電電力と一般電力負荷１０２の消費電力の情報を発電装置１０５や計測器（図示せず）から取得する。そして、蓄電装置１０４は、発電装置１０５の発電電力が一般電力負荷１０２の消費電力より大きく、余剰電力が発生した時は、その余剰電力を充電用コンバータ１１１を介して蓄電池１０９に充電させることで、逆潮流を防止する。一方、発電装置１０５の発電電力より一般電力負荷１０２の消費電力が大きいときには、蓄電装置１０４はインバータ１１０を介して蓄積した電力を供給する。これにより、発電装置１０５の発電電力と一般電力負荷１０２の消費電力との関係により発生する余剰電力を有効に活用する。   A power generator such as a fuel cell system needs to prevent reverse power flow from the viewpoint of power cost and safety of the system power supply 101 (for example, increase in AC voltage due to reverse power flow). Therefore, the power storage device 104 acquires information about the generated power of the power generation device 105 and the power consumption of the general power load 102 from the power generation device 105 and a measuring instrument (not shown). When the power generated by the power generation device 105 is larger than the power consumed by the general power load 102 and surplus power is generated, the power storage device 104 causes the storage battery 109 to charge the surplus power via the charging converter 111. Prevent reverse power flow. On the other hand, when the power consumption of the general power load 102 is larger than the power generated by the power generation device 105, the power storage device 104 supplies the accumulated power via the inverter 110. Thereby, surplus power generated due to the relationship between the generated power of the power generation apparatus 105 and the power consumption of the general power load 102 is effectively utilized.

次に、系統電源１０１が停電した時の動作について説明する。   Next, the operation when the system power supply 101 is interrupted will be described.

系統電源１０１の停電が発生した際、各々の装置において停電を検出する。停電を検出すると、第１の開閉器１１５、第２の開閉器１１６、及び第３の開閉器１０７を全て解列状態とする。これにより、系統電源１０１、蓄電装置１０４、発電装置１０５から一般電力負荷１０２への電力供給を切断すると共に、系統電源１０１から蓄電装置１０４、発電装置１０５への電力供給を切断する。次に、蓄電装置１０４は、インバータ１１０の制御方式を電圧型電流制御から電流型電圧制御へ切替えることで、発電装置１０５のパワーコンディショナ１１４の交流電力における周波数や位相の基準となる電圧波形を生成する。また、発電装置１０５は、運転を停止し、運転モードを連系モードから自立運転モードへ
切替える。 When a power failure occurs in the system power supply 101, the power failure is detected in each device. When a power failure is detected, the first switch 115, the second switch 116, and the third switch 107 are all disconnected. Thereby, the power supply from the system power supply 101, the power storage device 104, and the power generation device 105 to the general power load 102 is cut off, and the power supply from the system power supply 101 to the power storage device 104 and the power generation device 105 is cut off. Next, the power storage device 104 switches the control method of the inverter 110 from voltage-type current control to current-type voltage control, thereby generating a voltage waveform that serves as a reference for the frequency and phase of the AC power of the power conditioner 114 of the power generation device 105. Generate. Further, the power generation device 105 stops the operation and switches the operation mode from the interconnection mode to the self-sustained operation mode.

その後、発電装置１０５は、判定装置１０８の判定結果に基づき、再起動するか否かを判定する。具体的には、判定装置１０８が蓄電装置１０４の蓄電残量検出部１１２が検出する蓄電池１０９の蓄電残量が発電装置１０５の起動処理に必要な電力量より小さいと判定した場合、発電装置１０５は起動せずに待機する。一方、判定装置１０８が、蓄電池１０９の蓄電残量が発電装置１０５の起動処理に必要な電力量以上と判定した場合は、発電装置１０５は蓄電装置１０４から供給される電力をもとに起動する。これにより、発電装置１０５は、起動中に蓄電装置１０４からの電力供給不足による電源ダウンすることなく起動できる。   Thereafter, the power generation apparatus 105 determines whether to restart based on the determination result of the determination apparatus 108. Specifically, when the determination device 108 determines that the remaining power amount of the storage battery 109 detected by the remaining power amount detection unit 112 of the power storage device 104 is smaller than the amount of power required for the startup process of the power generation device 105, the power generation device 105 Waits without starting. On the other hand, when the determination device 108 determines that the remaining amount of electricity stored in the storage battery 109 is greater than or equal to the amount of power required for the activation process of the power generation device 105, the power generation device 105 is activated based on the power supplied from the power storage device 104. . Thereby, the power generation device 105 can be started without being powered down due to insufficient power supply from the power storage device 104 during startup.

発電装置１０５の発電開始後は、第２の開閉器１１６を導通状態とし、発電装置１０５から自立電力負荷１０３へ電力を供給する。このとき、蓄電装置１０４は、発電装置１０５の発電電力が自立電力負荷１０３より大きいときは充電用コンバータ１１１を介して蓄電池１０９へ充電し、発電装置１０５の発電電力が自立電力負荷１０３より小さいときは、インバータ１１０を介して蓄電池１０９に蓄電した電力を供給する。   After the power generation of the power generation apparatus 105 is started, the second switch 116 is turned on to supply power from the power generation apparatus 105 to the self-supporting power load 103. At this time, the power storage device 104 charges the storage battery 109 via the charging converter 111 when the power generated by the power generation device 105 is larger than the self-sustained power load 103, and when the power generated by the power generation device 105 is smaller than the self-sustained power load 103. Supplies the electric power stored in the storage battery 109 via the inverter 110.

次に、系統電源１０１が復電した時の動作について説明する。   Next, an operation when the system power supply 101 is restored will be described.

停電の後に系統電源１０１が復電した際、各々の装置において復電を検出する。復電を検出すると、第２の開閉器１１６が解列状態になることで、蓄電装置１０４、発電装置１０５からの自立電力負荷１０３への電力供給を切断する。蓄電装置１０４は、インバータ１１０の制御方式を電流型電圧制御から電圧型電流制御へ切替える。発電装置１０５は停止し、運転モードを自立運転モードから連系モードへ切替える。そして、その後、第１の開閉器１１５と第３の開閉器１０７を導通状態とすることで、系統電源１０１から一般電力負荷１０２へ電力供給する。そして、発電装置１０５は系統電源１０１からの電力供給により起動する。   When the system power supply 101 recovers after a power failure, the power recovery is detected in each device. When power recovery is detected, the second switch 116 is disconnected, thereby cutting off power supply from the power storage device 104 and the power generation device 105 to the independent power load 103. The power storage device 104 switches the control method of the inverter 110 from current type voltage control to voltage type current control. The power generator 105 stops and switches the operation mode from the self-sustained operation mode to the interconnection mode. After that, the first switch 115 and the third switch 107 are turned on to supply power from the system power supply 101 to the general power load 102. Then, the power generation apparatus 105 is activated by power supply from the system power supply 101.

なお、本実施の形態では、系統電源１０１の停電時において、発電装置１０５が発電開始後に第２の開閉器１１６を導通状態としたが、系統電源１０１の停電直後に導通状態とし、計測器（図示せず）による自立電力負荷１０３の消費電力の計測結果や電圧の計測結果に基づき過負荷状態と判定したとき解列状態とするようにしてもかまわない。これにより、発電装置１０５が起動中において蓄電装置１０４から自立電力負荷１０３へ電力供給する場合、過負荷状態が原因で発生する電圧低下による発電装置１０５の不要な停止を防ぐことができる。   In the present embodiment, at the time of a power failure of the system power supply 101, the second switch 116 is turned on after the power generation apparatus 105 starts power generation. If the overload state is determined based on the measurement result of the power consumption of the self-supporting power load 103 or the measurement result of the voltage (not shown), the disconnected state may be set. Accordingly, when power is supplied from the power storage device 104 to the self-sustained power load 103 while the power generation device 105 is activated, unnecessary stop of the power generation device 105 due to a voltage drop caused by an overload state can be prevented.

また、本実施の形態では、系統電源１０１の停電時において、発電装置１０５が発電開始後に第２の開閉器１１６を導通状態としたが、系統電源１０１の停電直後に導通状態を保ち、発電装置１０５の起動中においては、判定装置１０８が発電装置１０５の発電開始までに残り必要とする電力量と蓄電残量検出部１１２から取得する蓄電装置１０４の蓄電残量を常時、比較し、蓄電装置１０４の蓄電残量が発電装置１０５の発電開始までに残り必要とする電力量より小さくなると判定したとき第２の開閉器１１６を解列状態としてもかまわない。これにより、発電装置１０５の起動中において蓄電装置１０４からの電力供給不足による不要な停止を防ぐことができる。   Further, in the present embodiment, the second switch 116 is turned on after the power generation apparatus 105 starts power generation at the time of the power failure of the system power supply 101. However, the power generation apparatus 105 maintains the conduction state immediately after the power failure of the system power supply 101. During the activation of the power storage device 105, the determination device 108 constantly compares the amount of power required before the power generation device 105 starts power generation with the remaining power storage amount of the power storage device 104 acquired from the remaining power storage detection unit 112, and the power storage device The second switch 116 may be disconnected when it is determined that the remaining amount of power storage 104 is smaller than the amount of electric power remaining before the power generation apparatus 105 starts generating power. Thereby, an unnecessary stop due to insufficient power supply from the power storage device 104 can be prevented while the power generation device 105 is activated.

また、本実施の形態では、判定装置１０８が発電装置１０５の起動を禁止するか否か判定したが、発電装置１０５の制御部（図示せず）において判定装置を備え、制御部の判定装置が判定してもかまわない。   In the present embodiment, the determination device 108 determines whether or not the power generation device 105 is prohibited from starting. However, the control unit (not shown) of the power generation device 105 includes a determination device, and the determination device of the control unit You may judge.

また、本実施の形態では、系統電源１０１が正常時と停電時において蓄電装置１０４、
発電装置１０５が供給する電力負荷を別々としたが、１つにしてもかまわない。 Further, in the present embodiment, the power storage device 104 when the system power supply 101 is normal and during a power failure,
Although the power load supplied by the power generation apparatus 105 is separate, it may be one.

以上のように、本実施の形態においては、蓄電装置１０４からの電力供給のみで発電装置１０５が起動する場合、蓄電装置１０４の蓄電残量が発電装置１０５の起動処理に必要な電力量より小さいときは発電装置１０５の起動を禁止することで、蓄電装置１０４からの電力供給不足による発電装置１０５の起動中の不要な停止を防ぐことができる。   As described above, in the present embodiment, when power generation device 105 is activated only by power supply from power storage device 104, the remaining amount of power stored in power storage device 104 is smaller than the amount of power required for the startup process of power generation device 105. When the power generation device 105 is inhibited from starting, unnecessary stoppage during the power generation device 105 activation due to insufficient power supply from the power storage device 104 can be prevented.

また、本実施の形態においては、第２の開閉器１１６は、発電装置１０５を起動させる場合、蓄電装置１０４から自立電力負荷１０３に供給する電力を切断するため、蓄電装置１０４の電力を発電装置１０５に確実に供給することが可能となり、蓄電装置１０４からの電力供給不足による発電装置１０５の起動中の不要な停止を防ぐことができる。   In the present embodiment, when the power generation device 105 is activated, the second switch 116 cuts off the power supplied from the power storage device 104 to the self-sustained power load 103, and thus the power of the power storage device 104 is used as the power generation device. Thus, it is possible to reliably supply power to the power source 105, and it is possible to prevent an unnecessary stop during start-up of the power generation device 105 due to insufficient power supply from the power storage device 104.

また、本実施の形態では、判定装置１０８は蓄電池１０９の蓄電残量が発電装置１０５の起動処理に必要な電力量より小さいと判定したとき、発電装置１０５の起動を禁止したが、これに限定されない。例えば、蓄電池１０９に充電された電力量から蓄電池１０９の過放電防止のための電力量を引いた電力量を蓄電池１０９の蓄電残量としてもよい。この場合、蓄電池１０９の蓄電残量が、発電装置１０５の起動処理に必要な電力量より小さいと判定したとき、発電装置１０５の起動を禁止としてもかまわない。これにより、蓄電装置１０４からの電力供給により発電装置１０５を起動しても、蓄電池１０９は過放電を防止するための電力量が残る。蓄電残量を蓄電池１０９に充電された電力量から過放電防止のための電力量を差し引いた電力量とすることで、発電装置１０５の起動処理において、蓄電池１０９は過放電による劣化を抑制することができる。   Further, in the present embodiment, when the determination device 108 determines that the remaining amount of power stored in the storage battery 109 is smaller than the amount of power necessary for the start-up process of the power generation device 105, the start-up of the power generation device 105 is prohibited. Not. For example, the amount of electric power obtained by subtracting the amount of electric power for preventing overdischarge of the storage battery 109 from the amount of electric power charged in the storage battery 109 may be used as the remaining amount of electricity stored in the storage battery 109. In this case, when it is determined that the remaining amount of electricity stored in the storage battery 109 is smaller than the amount of power required for the activation process of the power generation device 105, the activation of the power generation device 105 may be prohibited. As a result, even when the power generation device 105 is activated by supplying power from the power storage device 104, the storage battery 109 still has a power amount for preventing overdischarge. The storage battery 109 suppresses deterioration due to overdischarge in the start-up process of the power generation apparatus 105 by setting the remaining power storage amount to the amount of power obtained by subtracting the amount of power for preventing overdischarge from the amount of power charged in the storage battery 109. Can do.

（実施の形態２）
以下に、本発明の実施の形態２における電力供給システムについて、図面を用いて説明する。 (Embodiment 2)
Below, the electric power supply system in Embodiment 2 of this invention is demonstrated using drawing.

図２は、図１とは、新たに、第２の蓄電池１１７と、第２の蓄電池１１７の電力を供給するインバータ１１８と、第２の蓄電池１１７を充電するための充電用コンバータ１１９と、第２の蓄電池１１７の蓄電残量を検出する第２の蓄電残量検出部１２０を備えていることが異なる。   2 is different from FIG. 1 in that a second storage battery 117, an inverter 118 that supplies power of the second storage battery 117, a charging converter 119 for charging the second storage battery 117, and a second The second difference is that it includes a second remaining power storage detection unit 120 that detects the remaining power storage of the second storage battery 117.

なお、図２において図１と同様の構成要素については同じ符号を付け、説明を省略する。   In FIG. 2, the same components as those in FIG.

以下に、本実施の形態の電力供給システムの動作・作用について、図２を用いて説明する。   Below, operation | movement and an effect | action of the electric power supply system of this Embodiment are demonstrated using FIG.

系統電源１０１が正常時は、本発明の実施の形態１と同様のため、説明を省略する。   When the system power supply 101 is normal, the description is omitted because it is the same as that of the first embodiment of the present invention.

系統電源１０１の停電が発生した際、各々の装置において停電を検出する。停電を検出すると、第１の開閉器１１５と第３の開閉器１０７を解列状態とし、系統電源１０１、蓄電装置１０４、発電装置１０５から一般電力負荷１０２への電力供給を切断すると共に、系統電源１０１から蓄電装置１０４、発電装置１０５とを切断する。また、蓄電装置１０４は、インバータ１１０、第２のインバータ１１８の制御方式を電圧型電流制御から電流型電圧制御へ切替えることで、発電装置１０５のパワーコンディショナ１１４の交流電力における周波数や位相の基準となる電圧波形を生成する。また、発電装置１０５は、運転を停止し、運転モードを連系モードから自立運転モードへ切替える。   When a power failure occurs in the system power supply 101, the power failure is detected in each device. When a power failure is detected, the first switch 115 and the third switch 107 are disconnected from each other, and the power supply from the system power supply 101, the power storage device 104, and the power generation device 105 to the general power load 102 is cut off. The power storage device 104 and the power generation device 105 are disconnected from the power source 101. In addition, the power storage device 104 switches the control method of the inverter 110 and the second inverter 118 from voltage-type current control to current-type voltage control, so that the frequency and phase reference in the AC power of the power conditioner 114 of the power generation device 105 can be obtained. A voltage waveform is generated. Further, the power generation device 105 stops the operation and switches the operation mode from the interconnection mode to the self-sustained operation mode.

その後、発電装置１０５は、判定装置１０８の判定結果に基づき、再起動するか否かを
判定する。具体的には、判定装置１０８が蓄電装置１０４の蓄電残量検出部１１２が検出する蓄電池１０９の蓄電残量と、第２の蓄電残量検出部１２０が検出する第２の蓄電池１１７の蓄電残量との合計が発電装置１０５の起動処理に必要な電力量より小さいと判定し、発電装置１０５の起動を禁止した場合は、起動せずに待機する。一方、判定装置１０８が、蓄電池１０９の蓄電残量と第２の蓄電池１１７の蓄電残量の合計が発電装置１０５の起動処理に必要な電力量以上と判定し、発電装置１０５の起動を許可した場合は、蓄電装置１０４から供給される電力をもとに再起動する。これにより、発電装置１０５は、起動中に蓄電装置１０４からの電力供給不足による電源ダウンすることなく起動できる。 Thereafter, the power generation apparatus 105 determines whether to restart based on the determination result of the determination apparatus 108. Specifically, the determination device 108 detects the remaining amount of storage battery 109 detected by the remaining storage amount detection unit 112 of the storage device 104 and the remaining storage amount of the second storage battery 117 detected by the second remaining storage amount detection unit 120. When it is determined that the sum of the amount and the amount of power required for the startup process of the power generation apparatus 105 is smaller and the startup of the power generation apparatus 105 is prohibited, the process waits without starting. On the other hand, the determination device 108 determines that the sum of the remaining amount of electricity stored in the storage battery 109 and the remaining amount of electricity stored in the second storage battery 117 is greater than or equal to the amount of power required for the start-up process of the power generation device 105, and permits the power generation device 105 to start In such a case, restart is performed based on the power supplied from the power storage device 104. Thereby, the power generation device 105 can be started without being powered down due to insufficient power supply from the power storage device 104 during startup.

発電装置１０５が発電開始後は、第２の開閉器１１６を導通状態とし、発電装置１０５から自立電力負荷１０３へ電力を供給する。このとき、蓄電装置１０４は、発電装置１０５の発電電力が自立電力負荷１０３より大きいときは充電用コンバータ１１１、第２の充電用コンバータ１１９を介して蓄電池１０９、第２の蓄電池１１７へ充電し、発電装置１０５の発電電力が自立電力負荷１０３より小さいときは、インバータ１１０、第２のインバータ１１８を介して蓄電池１０９、第２の蓄電池１１７に蓄電した電力を供給する。   After the power generation device 105 starts power generation, the second switch 116 is turned on to supply power from the power generation device 105 to the self-supporting power load 103. At this time, the power storage device 104 charges the storage battery 109 and the second storage battery 117 via the charging converter 111 and the second charging converter 119 when the generated power of the power generation device 105 is larger than the self-supporting power load 103, When the power generated by the power generation apparatus 105 is smaller than the self-sustained power load 103, the power stored in the storage battery 109 and the second storage battery 117 is supplied via the inverter 110 and the second inverter 118.

次に、系統電源１０１が復電した時の動作について説明する。   Next, an operation when the system power supply 101 is restored will be described.

系統電源１０１が復電した際、各々の装置において復電を検出する。復電を検出すると、第２の開閉器１１６を解列状態とすることで蓄電装置１０４、発電装置１０５からの自立電力負荷１０３への電力供給を切断する。蓄電装置１０４は、インバータ１１０、第２のインバータ１１８の制御方式を電流型電圧制御から電圧型電流制御へ切替え、発電装置１０５は停止し、運転モードを自立運転モードから連系モードへ切替える。そして、その後、第１の開閉器１１５と第３の開閉器１０７を導通状態とし、発電装置１０５は系統電源１０１からの電力供給により起動する。   When the system power supply 101 recovers, the power recovery is detected in each device. When power recovery is detected, the power supply from the power storage device 104 and the power generation device 105 to the stand-alone power load 103 is cut off by setting the second switch 116 in a disconnected state. The power storage device 104 switches the control method of the inverter 110 and the second inverter 118 from current-type voltage control to voltage-type current control, the power generation device 105 stops, and switches the operation mode from the independent operation mode to the interconnection mode. Then, after that, the first switch 115 and the third switch 107 are brought into conduction, and the power generation apparatus 105 is activated by supplying power from the system power supply 101.

以上のように本実施の発明においては、発電装置１０５が複数の蓄電池からの電力供給で起動する場合、複数の蓄電池の総蓄電残量が発電装置１０５の起動処理に必要な電力量より小さいときは発電装置１０５の起動を禁止することで、蓄電装置１０４からの電力供給不足による発電装置１０５の起動中の不要な停止を防ぐことができる。   As described above, in the present embodiment, when the power generation apparatus 105 is activated by supplying power from a plurality of storage batteries, the total remaining power of the plurality of storage batteries is smaller than the amount of power required for the activation process of the power generation apparatus 105. By prohibiting the start of the power generation apparatus 105, an unnecessary stop during the start-up of the power generation apparatus 105 due to insufficient power supply from the power storage apparatus 104 can be prevented.

本実施の形態では、判定装置１０８は蓄電池１０９の蓄電残量と第２の蓄電池１１７の蓄電残量との合計が発電装置１０５の起動処理に必要な電力量より小さいと判定したとき、発電装置１０５の起動を禁止したが、これに限定されない。例えば、蓄電池１０９に充電された電力量から蓄電池１０９の過放電防止のための電力量を引いた電力量を蓄電池１０９の蓄電残量とし、かつ、第２の蓄電池１１７に充電された電力量から第２の蓄電池１１７の過放電防止のための電力量を引いた電力量を第２の蓄電池１１７の蓄電残量としてもよい。この場合に、蓄電池１０９の蓄電残量と第２の蓄電池１１７の蓄電残量との合計が発電装置１０５の起動処理に必要な電力量より小さいと判定したとき、発電装置１０５の起動を禁止としてもかまわない。これにより、蓄電装置１０４からの電力供給により発電装置１０５を起動しても、蓄電池１０９及び第２の蓄電池１１７には、それぞれ過放電を防止するための電力量が残る。このため、蓄電池１０９及び第２の蓄電池１１７の過放電による劣化を抑制することができる。   In the present embodiment, when the determination device 108 determines that the total of the remaining amount of power stored in the storage battery 109 and the remaining amount of power stored in the second storage battery 117 is smaller than the amount of power required for the startup process of the power generation device 105, the power generation device Although the activation of 105 is prohibited, the present invention is not limited to this. For example, the amount of power obtained by subtracting the amount of power for preventing overdischarge of the storage battery 109 from the amount of power charged in the storage battery 109 is used as the remaining power of the storage battery 109, and the amount of power charged in the second storage battery 117 The amount of power obtained by subtracting the amount of power for preventing overdischarge of the second storage battery 117 may be used as the remaining amount of power stored in the second storage battery 117. In this case, when it is determined that the total of the remaining amount of electricity stored in the storage battery 109 and the remaining amount of electricity stored in the second storage battery 117 is smaller than the amount of power required for the activation process of the power generation device 105, the activation of the power generation device 105 is prohibited. It doesn't matter. As a result, even when the power generation device 105 is activated by supplying power from the power storage device 104, the storage battery 109 and the second storage battery 117 each have a power amount for preventing overdischarge. For this reason, deterioration due to overdischarge of the storage battery 109 and the second storage battery 117 can be suppressed.

以上のように、本発明にかかる電力供給システムは、蓄電装置からの電力供給のみで発電装置が起動する場合、蓄電装置の蓄電残量が発電装置の起動処理に必要な電力量より小さいときは発電装置の起動を禁止することで、蓄電装置からの電力供給不足による発電装置の起動中の不要な停止を防ぐことができるため、燃料電池発電装置、ガスエンジン発電装置などを用いた電力供給システム等の用途にも適用することができる。   As described above, in the power supply system according to the present invention, when the power generation device is started only by power supply from the power storage device, when the remaining power storage amount of the power storage device is smaller than the amount of power required for the power generation device start-up process. By prohibiting the start of the power generation device, it is possible to prevent an unnecessary stop during the start-up of the power generation device due to insufficient supply of power from the power storage device. Therefore, a power supply system using a fuel cell power generation device, a gas engine power generation device, etc. It can also be applied to other uses.

１０３ 自立電力負荷（電力負荷）
１０４ 蓄電装置
１０５ 発電装置
１０８ 判定装置
１０９ 蓄電池
１１６ 第２の開閉器（開閉器）
１１７ 第２の蓄電池 103 Independent power load (power load)
104 Power Storage Device 105 Power Generation Device 108 Judgment Device 109 Storage Battery 116 Second Switch (Switch)
117 second storage battery

Claims (4)

電力負荷に電力を供給する蓄電装置と、
前記蓄電装置から供給される電力により起動し、発電した電力を前記電力負荷に供給する発電装置と、
前記蓄電装置に残っている蓄電残量が、前記発電装置を起動するために必要な起動電力量より小さいか否かを判定する判定装置と、を備え、
前記判定装置が、前記蓄電装置に残っている蓄電残量が前記発電装置を起動するために必要な起動電力量より小さいと判定した場合に、前記発電装置の起動を禁止する電力供給システム。 A power storage device for supplying power to the power load;
A power generation device that is activated by power supplied from the power storage device and supplies the generated power to the power load;
A determination device that determines whether or not a remaining amount of power remaining in the power storage device is smaller than an amount of startup power required to start the power generation device;
A power supply system that prohibits starting of the power generation device when the determination device determines that the remaining amount of power remaining in the power storage device is smaller than the amount of startup power required to start the power generation device. 前記蓄電装置から前記電力負荷への電力供給を接続又は切断する開閉器を備え、
前記開閉器は、前記発電装置を起動させる場合、前記蓄電装置から前記電力負荷への電力供給を切断する請求項１に記載の電力供給システム。 A switch for connecting or disconnecting power supply from the power storage device to the power load;
2. The power supply system according to claim 1, wherein when the power generation device is started, the switch disconnects power supply from the power storage device to the power load. 前記蓄電装置は、複数の蓄電池で構成されており、前記判定装置は、前記複数の蓄電池に残っている蓄電残量の合計が、前記発電装置を起動するために必要な起動電力量より小さいと判定した場合に、前記発電装置の起動を禁止する請求項１または２に記載の電力供給システム。   The power storage device is composed of a plurality of storage batteries, and the determination device is configured such that a total amount of remaining power remaining in the plurality of storage batteries is smaller than an activation power amount necessary for starting the power generation device. 3. The power supply system according to claim 1, wherein, when determined, starting of the power generation device is prohibited. 前記蓄電残量は、前記蓄電装置に充電された電力量から過放電防止のための電力量を差し引いた電力量である、請求項１から３のいずれか１項に記載の電力供給システム。   The power supply system according to any one of claims 1 to 3, wherein the remaining power amount is a power amount obtained by subtracting a power amount for preventing overdischarge from a power amount charged in the power storage device.
JP2011212087A 2011-09-28 2011-09-28 Power supply system Pending JP2014239558A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2011212087A JP2014239558A (en) 2011-09-28 2011-09-28 Power supply system
PCT/JP2012/006179 WO2013046685A1 (en) 2011-09-28 2012-09-27 Power supply system and power control method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2011212087A JP2014239558A (en) 2011-09-28 2011-09-28 Power supply system

Publications (1)

Publication Number Publication Date
JP2014239558A true JP2014239558A (en) 2014-12-18

Family

ID=47994761

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2011212087A Pending JP2014239558A (en) 2011-09-28 2011-09-28 Power supply system

Country Status (2)

Country Link
JP (1) JP2014239558A (en)
WO (1) WO2013046685A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019030152A (en) * 2017-08-01 2019-02-21 株式会社興和電設 Power control system and power control method
JP2019512994A (en) * 2016-03-02 2019-05-16 フュエルセル エナジー， インコーポレイテッドＦｕｅｌｃｅｌｌ Ｅｎｅｒｇｙ， Ｉｎｃ． Direct current (DC) load leveling device

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6289661B2 (en) * 2014-10-27 2018-03-07 京セラ株式会社 Power supply device, power supply system, and control method for power supply device
JP6410567B2 (en) * 2014-10-29 2018-10-24 京セラ株式会社 POWER SUPPLY SYSTEM, START-UP CONTROL DEVICE, AND POWER SUPPLY SYSTEM CONTROL METHOD
JP6170258B2 (en) * 2014-11-27 2017-07-26 京セラ株式会社 Power control apparatus, power supply system, and control method for power supply system
JP6391473B2 (en) * 2015-01-08 2018-09-19 三菱電機株式会社 Battery system

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4868884B2 (en) * 2006-02-23 2012-02-01 Ｊｘ日鉱日石エネルギー株式会社 Emergency power supply system using fuel cell
JP5215583B2 (en) * 2007-04-06 2013-06-19 本田技研工業株式会社 Fuel cell system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019512994A (en) * 2016-03-02 2019-05-16 フュエルセル エナジー， インコーポレイテッドＦｕｅｌｃｅｌｌ Ｅｎｅｒｇｙ， Ｉｎｃ． Direct current (DC) load leveling device
US10854898B2 (en) 2016-03-02 2020-12-01 Fuelcell Energy, Inc. Direct current (DC) load levelers
JP2019030152A (en) * 2017-08-01 2019-02-21 株式会社興和電設 Power control system and power control method

Also Published As

Publication number Publication date
WO2013046685A1 (en) 2013-04-04

Similar Documents

Publication Publication Date Title
CN101156295B (en) Electric power supply system
JP6047490B2 (en) Power supply system, power distribution device, and power control method
JP5253690B1 (en) Power supply system and control method thereof
JP5207060B2 (en) Self-sustaining operation system using power storage / emergency power generator
JP2008022650A (en) Self-sustained operation support device and power supply system
JP2014239558A (en) Power supply system
JP2013230063A (en) Power supply
CN101390268A (en) Backup power supply system using fuel cell
KR20100125758A (en) Uninterruptible Power Supply and Uninterruptible Power Supply Using Generator
JP2004357377A (en) Distributed power generation system
JP2013162686A (en) Power supply system
KR101047022B1 (en) Power control method and apparatus for grid-connected fuel cell system
KR101435388B1 (en) System for initial charging of smoothing capacitor of fuel cell
JP6391473B2 (en) Battery system
KR20140087930A (en) Battery energy storage system and controlling method using the same
JP2014117083A (en) Input power supply switching method for power storage device
JP5864247B2 (en) Power generator
JP3519899B2 (en) Uninterruptible power system
KR101161111B1 (en) Apparatus and method for controlling fuel cell system
KR20120073405A (en) Fuel cell system, and method for power control
JP2006228436A (en) Fuel cell system
JP2015084625A (en) Power supply system and power supply method
JP2011036087A (en) Power generation system
JP7542181B2 (en) Power supply system using mobile devices
JP2014179184A (en) Interconnection system for fuel cell