JPH11214735A - Storage battery protective system in photovoltaic generation system - Google Patents
Storage battery protective system in photovoltaic generation systemInfo
- Publication number
- JPH11214735A JPH11214735A JP10014597A JP1459798A JPH11214735A JP H11214735 A JPH11214735 A JP H11214735A JP 10014597 A JP10014597 A JP 10014597A JP 1459798 A JP1459798 A JP 1459798A JP H11214735 A JPH11214735 A JP H11214735A
- Authority
- JP
- Japan
- Prior art keywords
- storage battery
- voltage
- generation system
- power generation
- 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
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Photovoltaic Devices (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、防災用等に用い
られる太陽電池と蓄電池とインバータとからなる太陽光
発電システムにおける蓄電池保護方式に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a storage battery protection system in a photovoltaic power generation system including a solar cell, a storage battery, and an inverter used for disaster prevention or the like.
【０００２】[0002]
【従来の技術】図３は、従来の防災用等の太陽光発電シ
ステムの実施例を示す構成図である。図３において、１
は太陽電池、２は蓄電池、３は系統電源、４は負荷、５
はインバータ、６はトランス、７はノイズフィルタ、
８，９，１０はスイッチである。通常運転時は、スイッ
チ８はオン、スイッチ９は図示の如く右側に接続され、
スイッチ１０はオフしており、太陽電池１、インバータ
５およびトランス６からなる太陽電池系と系統電源３と
が連係して負荷４に電力を供給しており、負荷４が軽い
ときは太陽電池系の電力の１部は系統電源３側に供給さ
れている。ノイズフィルタ７はインバータ５の発生する
ノイズを吸収し、系統電源３を保護するために使用して
いる。なお、インバータ５は双方向の変換が可能で、通
常運転時で夜間など太陽電池１が作動していないとき、
必要に応じてスイッチ１０をオンして、系統電源３によ
り蓄電池２を充電するコンバータとしても動作する。2. Description of the Related Art FIG. 3 is a block diagram showing an embodiment of a conventional solar power generation system for disaster prevention or the like. In FIG. 3, 1
Is a solar cell, 2 is a storage battery, 3 is a system power supply, 4 is a load, 5
Is an inverter, 6 is a transformer, 7 is a noise filter,
8, 9, and 10 are switches. During normal operation, the switch 8 is turned on, and the switch 9 is connected to the right side as shown,
The switch 10 is off, the solar cell system including the solar cell 1, the inverter 5 and the transformer 6 and the system power supply 3 are linked to supply power to the load 4, and when the load 4 is light, the solar cell system Is supplied to the system power supply 3 side. The noise filter 7 is used to absorb the noise generated by the inverter 5 and protect the system power supply 3. Note that the inverter 5 can perform bidirectional conversion, and when the solar cell 1 is not operating, such as at night, during normal operation,
The switch 10 is turned on as necessary, and the converter also operates as a converter that charges the storage battery 2 with the system power supply 3.
【０００３】系統電源３が停電した場合、スイッチ８は
オフ、スイッチ９は左側に接続され、スイッチ１０はオ
ンとなり、系統電源３は本システムから切り離される。
このときの太陽電池１、蓄電池２、インバータ５および
トランス６による運転を自立運転と称する。自立運転時
は、太陽電池１の出力と蓄電池２の出力の両方がインバ
ータ５に接続され、負荷４に電力を供給する。負荷４が
軽いときは太陽電池１の電力の１部は蓄電池２の充電に
使用される。When the system power supply 3 fails, the switch 8 is turned off, the switch 9 is connected to the left side, the switch 10 is turned on, and the system power supply 3 is disconnected from the system.
The operation by the solar cell 1, the storage battery 2, the inverter 5, and the transformer 6 at this time is referred to as an independent operation. During the self-sustaining operation, both the output of the solar cell 1 and the output of the storage battery 2 are connected to the inverter 5 to supply power to the load 4. When the load 4 is light, a part of the power of the solar cell 1 is used for charging the storage battery 2.
【０００４】[0004]
【発明が解決しようとする課題】防災用例えば避難場所
としての体育館等の照明用および放送用その他の設備に
使用する太陽光発電システムに使用する蓄電池は、太陽
電池が数十ＫＷにもなる場合があるため大容量の蓄電池
が必要であり、またセルを百数十個直列に接続する場合
があるためセル電圧が高く、出来るだけ安価な蓄電池が
必要となる。従って、一般には鉛蓄電池、たとえばＭＳ
Ｅ１０００（１０時間放電で１０００ＡＨ）等が使用さ
れる。A storage battery used for a solar power generation system used for disaster prevention, for example, for lighting and broadcasting or other equipment such as a gymnasium as an evacuation site, has a capacity of several tens of kilowatts. Therefore, a large-capacity storage battery is required, and more than one hundred cells are connected in series, so that a storage battery with a high cell voltage and as inexpensive as possible is required. Therefore, in general, a lead-acid battery such as MS
E1000 (1000 AH for 10 hours discharge) or the like is used.
【０００５】しかしながら、鉛蓄電池は、蓄電池の浮動
電圧を超える電圧が加えられると劣化してしまう。ま
た、放電終止レベルを超えて放電すると劣化してしま
う。従って、本発明の目的は、太陽光発電システムに使
用する蓄電池を、過電圧および過放電から保護し、シス
テムとしての信頼性を確保することにある。However, a lead-acid battery deteriorates when a voltage exceeding the floating voltage of the battery is applied. In addition, if the discharge exceeds the discharge end level, the battery will be deteriorated. Therefore, an object of the present invention is to protect a storage battery used in a photovoltaic power generation system from overvoltage and overdischarge, and to ensure the reliability of the system.
【０００６】[0006]
【課題を解決するための手段】上記課題を解決するため
に、本発明においては、太陽光発電システムにおける蓄
電池に浮動電圧を超える電圧が印加されないようにする
ための過電圧保護回路と、蓄電池が放電終止レベルを超
えて放電しないようにするための過放電保護回路とを具
備する。このことにより、システムとしての信頼性を確
保することができる。According to the present invention, there is provided an overvoltage protection circuit for preventing a voltage exceeding a floating voltage from being applied to a storage battery in a photovoltaic power generation system. An over-discharge protection circuit for preventing the discharge from exceeding the stop level. Thereby, the reliability of the system can be ensured.
【０００７】[0007]
【発明の実施の形態】図１は、本発明の実施例を示す構
成図である。図１において、１１は制御回路、１２はス
イッチ、１３はスイッチ１２へのオン／オフ指令信号、
１４はインバータ５の起動／停止指令信号であり、その
他の構成要素は図３と同じであり同じ符号を付してあ
る。FIG. 1 is a block diagram showing an embodiment of the present invention. In FIG. 1, 11 is a control circuit, 12 is a switch, 13 is an on / off command signal to the switch 12,
Reference numeral 14 denotes a start / stop command signal for the inverter 5, and other components are the same as those in FIG.
【０００８】通常運転時および系統電源３が停電した自
立運転時におけるスイッチ８，９，１０の動作は、図３
の場合と同じである。すなわち、スイッチ８はオフ、ス
イッチ９は左側に接続され、スイッチ１０はオンであ
る。図３との相違点は、自立運転時における動作に次の
２点を追加したことである。第１は、制御回路１１によ
り図示の電圧Ｖ１を監視し、この電圧が所定の電圧以上
になったときには、オン／オフ指令信号１３によりスイ
ッチ１２をオフとし、負荷４への給電は蓄電池２の電力
で継続するようにした点である。これにより蓄電池２に
浮動電圧を超える電圧が加えられることを防止すること
ができ、蓄電池２の劣化を防止することができる。The operation of the switches 8, 9, and 10 during normal operation and during self-sustained operation when the system power supply 3 fails is described in FIG.
Is the same as That is, the switch 8 is off, the switch 9 is connected to the left side, and the switch 10 is on. The difference from FIG. 3 is that the following two points are added to the operation during the self-sustaining operation. First, the control circuit 11 monitors the voltage V1 shown in the figure. When the voltage V1 exceeds a predetermined voltage, the switch 12 is turned off by the on / off command signal 13, and power to the load 4 is supplied to the storage battery 2. The point is that power is continued. Thereby, it is possible to prevent the voltage exceeding the floating voltage from being applied to the storage battery 2, and it is possible to prevent the deterioration of the storage battery 2.
【０００９】第２は、制御回路１１により図示の電圧Ｖ
１を監視し、この電圧が日射不足等により所定の電圧以
下になったときには、起動／停止指令信号１４によりイ
ンバータ５の運転を停止し、負荷４への給電を停止す
る。そして再び日射が回復し図示の電圧Ｖ１が所定の電
圧を超えると、制御回路１１によりインバータ５は起動
され、負荷４への給電が再開されるようにした点であ
る。これにより蓄電池２は放電終止レベルを超えて放電
することを防止することができ、蓄電池２の劣化を防止
することができる。Second, the control circuit 11 controls the voltage V
1 is monitored, and when this voltage falls below a predetermined voltage due to insufficient solar radiation or the like, the operation of the inverter 5 is stopped by the start / stop command signal 14 and the power supply to the load 4 is stopped. Then, when the solar radiation recovers again and the voltage V1 shown in the figure exceeds a predetermined voltage, the inverter 5 is started by the control circuit 11 and the power supply to the load 4 is restarted. Thereby, the storage battery 2 can be prevented from discharging beyond the discharge end level, and the deterioration of the storage battery 2 can be prevented.
【００１０】なお、スイッチ１２のオン／オフの際、お
よびインバータ５の起動／停止の際の動作のチャタリン
グを防止するために、制御回路１１はタイマを内蔵して
おり、一定時間ごとに図示の電圧Ｖ１を測定して制御を
行うようにしている。図２は、自立運転時の蓄電池保護
動作を示すフローチャートである。正常に自立運転して
いるときの電圧Ｖ１は、２．４２Ｖ＞Ｖ１＞１．８Ｖで
あり、スイッチ１２はオン、インバータ５は起動されて
いる。電圧Ｖ１が２．４２Ｖ以上になったときは右側の
フローをたどり、蓄電池への過電圧印加防止のためにス
イッチ１２をオフする。電圧Ｖ１が１．８Ｖ以下になっ
たときは左側のフローをたどり、蓄電池の過放電防止の
ためにインバータ５を停止する。なお、チャタリング防
止用タイマは１０分に設定している。The control circuit 11 has a built-in timer to prevent chattering of the operation when the switch 12 is turned on / off and the operation when the inverter 5 is started / stopped. The control is performed by measuring the voltage V1. FIG. 2 is a flowchart showing the storage battery protection operation during the self-sustaining operation. The voltage V1 during normal autonomous operation is 2.42V>V1> 1.8V, the switch 12 is on, and the inverter 5 is activated. When the voltage V1 becomes 2.42V or more, the flow on the right side is followed, and the switch 12 is turned off to prevent application of overvoltage to the storage battery. When the voltage V1 becomes 1.8 V or less, the flow on the left side is followed, and the inverter 5 is stopped to prevent overdischarge of the storage battery. The chattering prevention timer is set to 10 minutes.
【００１１】[0011]
【発明の効果】本発明によれば、太陽光発電システムに
おいて使用する鉛蓄電池を、過電圧および過放電から保
護することができ、防災用等に使用しうる高信頼性太陽
光発電システムとして運用することができる。According to the present invention, a lead storage battery used in a photovoltaic power generation system can be protected from overvoltage and overdischarge, and is operated as a highly reliable photovoltaic power generation system that can be used for disaster prevention and the like. be able to.
【図面の簡単な説明】[Brief description of the drawings]
【図１】この発明の実施例を示す構成図。FIG. 1 is a configuration diagram showing an embodiment of the present invention.
【図２】この発明の自立運転時の蓄電池保護動作を示す
フローチャート。FIG. 2 is a flowchart illustrating a storage battery protection operation during self-sustaining operation according to the present invention.
【図３】従来の防災用等の太陽光発電システムの実施例
を示す構成図。FIG. 3 is a configuration diagram showing an embodiment of a conventional solar power generation system for disaster prevention and the like.
１…太陽電池、２…蓄電池、３…系統電源、４…負荷、
５…インバータ、６…トランス、７…ノイズフィルタ、
８，９，１０…スイッチ、１１…制御回路、１２…スイ
ッチ、１３…オン／オフ指令信号、１４…起動／停止指
令信号。1 ... solar cell, 2 ... storage battery, 3 ... system power supply, 4 ... load,
5 inverter, 6 transformer, 7 noise filter,
8, 9, 10: switch, 11: control circuit, 12: switch, 13: on / off command signal, 14: start / stop command signal.
Claims (1)
太陽光発電システムにおける蓄電池保護方式において、
蓄電池に浮動電圧を超える電圧が印加されないようにす
るための過電圧保護回路と、蓄電池が放電終止レベルを
超えて放電しないようにするための過放電保護回路とを
具備したことを特徴とする太陽光発電システムにおける
蓄電池保護方式。1. A storage battery protection system in a solar power generation system comprising a solar cell, a storage battery, and an inverter,
A sunlight comprising: an overvoltage protection circuit for preventing a voltage exceeding a floating voltage from being applied to a storage battery; and an overdischarge protection circuit for preventing the storage battery from discharging beyond a discharge termination level. Battery protection method in power generation system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10014597A JPH11214735A (en) | 1998-01-27 | 1998-01-27 | Storage battery protective system in photovoltaic generation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10014597A JPH11214735A (en) | 1998-01-27 | 1998-01-27 | Storage battery protective system in photovoltaic generation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11214735A true JPH11214735A (en) | 1999-08-06 |
Family
ID=11865605
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10014597A Pending JPH11214735A (en) | 1998-01-27 | 1998-01-27 | Storage battery protective system in photovoltaic generation system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11214735A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101032693B1 (en) | 2011-02-01 | 2011-05-06 | 옵티멀파워디자인 주식회사 | Generation system and method for managing battery based on limiting survival mode |
| JP2012504864A (en) * | 2008-10-01 | 2012-02-23 | パセコ コーポレイション | Solar panel array monitoring and control network configuration |
| CN103607034A (en) * | 2013-11-13 | 2014-02-26 | 中国能源建设集团广东省电力设计研究院 | Intensive light-storage thermal-cold system |
| JP2015070746A (en) * | 2013-09-30 | 2015-04-13 | 三洋電機株式会社 | Control device and power storage system |
| EP2122432B1 (en) | 2007-02-20 | 2015-09-09 | Commissariat à l'Énergie Atomique et aux Énergies Alternatives | Voltage limiter and protection for a photovoltaic module |
| CN105471369A (en) * | 2014-11-17 | 2016-04-06 | 浙江万向太阳能有限公司 | Off-grid PV power generation system and power supply method thereof |
| JP6148782B1 (en) * | 2016-12-06 | 2017-06-14 | 長州産業株式会社 | Photovoltaic power generation system having solar cell module deterioration prevention function and method for preventing deterioration of solar cell module in solar power generation system |
| US9746528B2 (en) | 2011-07-04 | 2017-08-29 | Commissariat à l'énergie atomique et aux énergies alternatives | Detection of electrical arcs in photovoltaic equipment |
| US9843288B2 (en) | 2013-08-29 | 2017-12-12 | Commissariat à l'énergie atomique et aux énergies alternatives | Parallel electric arc detection across the main terminals of a photovoltaic installation |
| CN108808823A (en) * | 2018-06-22 | 2018-11-13 | 河南森源电气股份有限公司 | A kind of photovoltaic module booting-self controller device and a kind of power supply system |
| US10432139B2 (en) | 2013-08-29 | 2019-10-01 | Commissariat à l'énergie atomique et aux énergies alternatives | Electric arc detection in photovoltaic installations |
| WO2023226095A1 (en) * | 2022-05-23 | 2023-11-30 | 浙江艾罗网络能源技术股份有限公司 | Method for controlling current during battery charging and discharging in off-grid mode of hybrid energy storage inverter |
-
1998
- 1998-01-27 JP JP10014597A patent/JPH11214735A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2122432B1 (en) | 2007-02-20 | 2015-09-09 | Commissariat à l'Énergie Atomique et aux Énergies Alternatives | Voltage limiter and protection for a photovoltaic module |
| JP2012504864A (en) * | 2008-10-01 | 2012-02-23 | パセコ コーポレイション | Solar panel array monitoring and control network configuration |
| KR101032693B1 (en) | 2011-02-01 | 2011-05-06 | 옵티멀파워디자인 주식회사 | Generation system and method for managing battery based on limiting survival mode |
| US9746528B2 (en) | 2011-07-04 | 2017-08-29 | Commissariat à l'énergie atomique et aux énergies alternatives | Detection of electrical arcs in photovoltaic equipment |
| US10432139B2 (en) | 2013-08-29 | 2019-10-01 | Commissariat à l'énergie atomique et aux énergies alternatives | Electric arc detection in photovoltaic installations |
| US9843288B2 (en) | 2013-08-29 | 2017-12-12 | Commissariat à l'énergie atomique et aux énergies alternatives | Parallel electric arc detection across the main terminals of a photovoltaic installation |
| JP2015070746A (en) * | 2013-09-30 | 2015-04-13 | 三洋電機株式会社 | Control device and power storage system |
| CN103607034A (en) * | 2013-11-13 | 2014-02-26 | 中国能源建设集团广东省电力设计研究院 | Intensive light-storage thermal-cold system |
| CN105471369A (en) * | 2014-11-17 | 2016-04-06 | 浙江万向太阳能有限公司 | Off-grid PV power generation system and power supply method thereof |
| JP6148782B1 (en) * | 2016-12-06 | 2017-06-14 | 長州産業株式会社 | Photovoltaic power generation system having solar cell module deterioration prevention function and method for preventing deterioration of solar cell module in solar power generation system |
| JP2018093661A (en) * | 2016-12-06 | 2018-06-14 | 長州産業株式会社 | Photovoltaic power generation system with solar cell module deterioration prevention function and solar cell module deterioration prevention method in photovoltaic power generation system |
| CN108808823A (en) * | 2018-06-22 | 2018-11-13 | 河南森源电气股份有限公司 | A kind of photovoltaic module booting-self controller device and a kind of power supply system |
| CN108808823B (en) * | 2018-06-22 | 2024-01-19 | 河南森源电气股份有限公司 | Photovoltaic module self-starting control device and power supply system |
| WO2023226095A1 (en) * | 2022-05-23 | 2023-11-30 | 浙江艾罗网络能源技术股份有限公司 | Method for controlling current during battery charging and discharging in off-grid mode of hybrid energy storage inverter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| RU2444105C1 (en) | Universal portable system of power accumulation and power supply | |
| CN101517852B (en) | Discharger and discharge control method | |
| JP2861879B2 (en) | Battery pack | |
| JPWO2012050210A1 (en) | Power storage system and control device | |
| JPH11214735A (en) | Storage battery protective system in photovoltaic generation system | |
| JP3219524B2 (en) | Overdischarge protection circuit for secondary battery | |
| RU2168828C1 (en) | Method for controlling off-line power supply system | |
| JP3222951B2 (en) | Secondary battery protection circuit | |
| JP2006223050A (en) | Power supply system | |
| JP2011029010A (en) | Lithium ion secondary battery system and power supply method to management device | |
| JP4291629B2 (en) | Battery device | |
| JP2002058170A (en) | Uninterruptible power supply | |
| JPH0956056A (en) | Secondary-battery power unit, protective circuit, and method for protecting secondary battery from being abnormally charged | |
| JP2002208443A (en) | Battery pack | |
| JP2004159405A (en) | Uninterruptible power supply device | |
| JPH0965582A (en) | Power supply system utilizing solar cell | |
| JP3331200B2 (en) | Module battery protection device and power storage device | |
| JP2002058175A (en) | Independent power supply system | |
| JP3322925B2 (en) | Battery charging control system | |
| JP2005229702A (en) | Method of reducing energy loss in power supply system, and power supply system | |
| JPH08172727A (en) | Protective device of set battery | |
| JP3459428B2 (en) | Solar cell equipment | |
| JPH01298649A (en) | Discharge control circuit for fuel cell | |
| CN216162436U (en) | Battery management system with dual redundancies and high reliability | |
| JP3322780B2 (en) | Rechargeable battery charging circuit |