JP6792116B1 - 直流電力連系システム - Google Patents
直流電力連系システム Download PDFInfo
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- JP6792116B1 JP6792116B1 JP2019571375A JP2019571375A JP6792116B1 JP 6792116 B1 JP6792116 B1 JP 6792116B1 JP 2019571375 A JP2019571375 A JP 2019571375A JP 2019571375 A JP2019571375 A JP 2019571375A JP 6792116 B1 JP6792116 B1 JP 6792116B1
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Classifications
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- 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
- H01M10/24—Alkaline accumulators
-
- 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
-
- 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
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/60—Arrangements for transfer of electric power between AC networks or generators via a high voltage DC link [HVCD]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Supply And Distribution Of Alternating Current (AREA)
- Direct Current Feeding And Distribution (AREA)
- Secondary Cells (AREA)
- Hybrid Cells (AREA)
Abstract
Description
フッ素ガス処理は、例えば、不活性ガスで希釈したフッ素ガスに、気密空間の中で不織布をさらすことにより不織布の繊維表面を親水化することができる。また、金属酸化物としては例えば、チタン酸化物、ジルコニア、酸化イットリウム、ハフニウム酸化物、酸化カルシウム、酸化マグネシウム、酸化スカンジウムが挙げられる。このうち、ジルコニア(ZrO2)もしくは酸化イットリウム(Y2O3)が好ましい。金属酸化物は親水性を有しており、かつ、水素により劣化しにくいので長期にわたって親水性を保持し、電解液のドライアウトを抑制することが可能である。
ここにネルンストの式は、V=V0+αlog(c1/c2)であって、V;電極電位、V0;標準電極電位、α;定数、c1/c2;濃度比である。
水素ガスの発生につれて電池の端子電圧は緩やかに上昇し、ついには直流電源の充電電圧と等しくなり、充電電流は流れなくなって、充電は停止する。すなわち充電電圧に対応した満充電状態となり、充電電流は流れなくなり、充電は停止する。
10 連系ステーション
11 電力系統
12 トランス
13 双方向インバータ
14 二次電池
16 太陽光発電所
17 風力発電所
18 需要家
20 連系ステーション
21 電力系統
30 連系ステーション
31 電力系統
Claims (12)
- 複数の二次巻線を有するトランスと、
前記二次巻線に接続され、水素ガスを封入し、水素を負極活物質とし、端子電圧が充電電圧と等しくなり充電電流が流れなくなるまで充電することにより充電終了時の電圧と放電開始時の電圧が等しくなる二次電池とを備えた、直流電力連系システム。 - 複数の前記二次電池が直列に接続された請求項1に記載の直流電力連系システム。
- 前記二次巻線と前記二次電池の間に配されている電力変換器を更に備えた請求項2に記載の直流電力連系システム。
- 前記電力変換器が双方向インバータおよび直流変換器のいずれかである請求項3に記載の直流電力連系システム。
- 前記直流変換器がコンバータおよび整流器のいずれかである請求項4に記載の直流電力連系システム。
- 前記トランスは、前記二次巻線に共通の鉄心を有する請求項4に記載の直流電力連系システム。
- 前記二次電池に、需要家および自然エネルギーを利用した発電所が接続された請求項6に記載の直流電力連系システム。
- 前記二次電池の電圧が所定の値より大きいとき、前記双方向インバータを介して前記二次電池の電力を前記二次巻線に供給する請求項7に記載の直流電力連系システム。
- 前記二次巻線と前記二次電池と前記電力変換器を備えた連系ユニットを複数有する連系ステーションが相互に結ばれた請求項6に記載の直流電力連系システム。
- 前記連系ステーションが前記二次電池を備えていない連系ユニットを含む請求項9に記載の直流電力連系システム。
- 前記双方向インバータが自励式動作に変更可能である請求項8に記載の直流電力連系システム。
- 交流電力系統からの交流電力を直流電力に変換する電力変換装置と、
前記電力変換装置からの電流で充電され、水素ガスを封入し、水素を負極活物質とし、端子電圧が充電電圧と等しくなり充電電流が流れなくなるまで充電することにより充電終了時の電圧と放電開始時の電圧が等しい二次電池とを備え、
前記交流電力系統の周波数が所定の値より大きいとき前記電力変換装置の出力電圧を大きくする、直流電力系統。
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PCT/JP2019/000653 WO2020144839A1 (ja) | 2019-01-11 | 2019-01-11 | 直流電力連系システム |
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JP6792116B1 true JP6792116B1 (ja) | 2020-11-25 |
JPWO2020144839A1 JPWO2020144839A1 (ja) | 2021-02-18 |
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Cited By (1)
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CN114884167A (zh) * | 2022-05-13 | 2022-08-09 | 国网湖北省电力有限公司宜昌供电公司 | 基于磷酸铁锂蓄电池的变电站直流控制系统 |
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US20240146066A1 (en) * | 2021-06-01 | 2024-05-02 | Mitsubishi Electric Corporation | Power grid stabilization system |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06295746A (ja) * | 1993-04-09 | 1994-10-21 | Japan Storage Battery Co Ltd | 蓄電池群の充電方法 |
US20100090532A1 (en) * | 2008-10-09 | 2010-04-15 | The Aes Corporation | Frequency Responsive Charge Sustaining Control of Electricity Storage Systems for Ancillary Services on an Electrical Power Grid |
JP2011198549A (ja) * | 2010-03-18 | 2011-10-06 | Kawasaki Heavy Ind Ltd | ニッケル水素電池のフロート充電システム |
JP2015164378A (ja) * | 2014-02-28 | 2015-09-10 | 株式会社Nttファシリティーズ | 蓄電池制御装置、給電システム、蓄電池制御方法、及びプログラム |
JP2015225826A (ja) * | 2014-05-30 | 2015-12-14 | エクセルギー・パワー・システムズ株式会社 | ニッケル水素電池の充電量表示装置および充電量表示方法 |
JP2017011855A (ja) * | 2015-06-19 | 2017-01-12 | 株式会社東芝 | 蓄電池の制御装置及び直流送電システム |
JP2017182947A (ja) * | 2016-03-29 | 2017-10-05 | 均 桝谷 | 積層型蓄電池及びこれを用いた蓄電池システム |
JP6627025B2 (ja) * | 2017-07-20 | 2020-01-08 | エクセルギー・パワー・システムズ株式会社 | 直流給電方式 |
JP6627026B2 (ja) * | 2017-10-20 | 2020-01-08 | エクセルギー・パワー・システムズ株式会社 | 直流電力連系方式および二次電池 |
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2019
- 2019-01-11 JP JP2019571375A patent/JP6792116B1/ja not_active Expired - Fee Related
- 2019-01-11 WO PCT/JP2019/000653 patent/WO2020144839A1/ja active Application Filing
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06295746A (ja) * | 1993-04-09 | 1994-10-21 | Japan Storage Battery Co Ltd | 蓄電池群の充電方法 |
US20100090532A1 (en) * | 2008-10-09 | 2010-04-15 | The Aes Corporation | Frequency Responsive Charge Sustaining Control of Electricity Storage Systems for Ancillary Services on an Electrical Power Grid |
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