DE102011007613A1 - System for storing electrical energy e.g. solar energy generated by photovoltaic system, has reservoir designed as overhead gas storage for storing generated pressurized air and combustible gas, and turbine generating energy from air - Google Patents

System for storing electrical energy e.g. solar energy generated by photovoltaic system, has reservoir designed as overhead gas storage for storing generated pressurized air and combustible gas, and turbine generating energy from air Download PDF

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Publication number
DE102011007613A1
DE102011007613A1 DE102011007613A DE102011007613A DE102011007613A1 DE 102011007613 A1 DE102011007613 A1 DE 102011007613A1 DE 102011007613 A DE102011007613 A DE 102011007613A DE 102011007613 A DE102011007613 A DE 102011007613A DE 102011007613 A1 DE102011007613 A1 DE 102011007613A1
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Prior art keywords
gas
compressed air
generated
storing
air
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DE102011007613A
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German (de)
Inventor
Ralf Klenk
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Kaco New Energy GmbH
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Kaco New Energy GmbH
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    • 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
    • H02J15/00—Systems for storing electric energy
    • H02J15/006—Systems for storing electric energy in the form of pneumatic energy, e.g. compressed air energy storage [CAES]
    • 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
    • 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
    • H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
    • H02J2300/20—The dispersed energy generation being of renewable origin
    • H02J2300/22—The renewable source being solar energy
    • H02J2300/24—The renewable source being solar energy of photovoltaic origin
    • 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
    • H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
    • H02J2300/20—The dispersed energy generation being of renewable origin
    • H02J2300/28—The renewable source being wind energy
    • 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
    • Y02E10/56—Power conversion systems, e.g. maximum power point trackers
    • 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)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

The system has a compressed air generating unit i.e. air compressor (3), generating pressurized air from surrounding air by generated electrical energy from a photovoltaic system (1) and/or a wind energy system (2). A reservoir is designed as an overhead gas storage (4) for storing the generated pressurized air and combustible gas. The gas storage is designed as a high-pressure gas container e.g. spherical gas container, and a compressed air-driven turbine (5) generates electrical energy from the pressurized air to be stored in the reservoir. The combustible gas is selected from illuminating gas, natural gas, liquid gas, bio-gas and/or sewage gas.

Description

Die Erfindung betrifft ein System zum Speichern von mittels einer Photovoltaikanlage und/oder einer Windkraftanlage erzeugter elektrischer Energie und eine Verwendung eines Gasspeichers.The invention relates to a system for storing electrical energy generated by means of a photovoltaic system and / or a wind power plant and to a use of a gas reservoir.

Bei der Nutzung regenerativer Energien wie Solarenergie und Windkraft ist es wünschenswert, überschüssig erzeugte Energie zwischenzuspeichern, um diese im Bedarfsfall, d. h. in Zeiten erhöhten Energiebedarfs, abrufen zu können.When using renewable energies such as solar energy and wind power, it is desirable to buffer excess energy generated in order, if necessary, d. H. in times of increased energy demand, to be able to call.

Es ist bekannt, aus Windenergie gewonnene elektrische Energie in Druckluft zu wandeln und diese in unterirdischen Druckluftspeichern zu speichern. Weiter sind so genannte Druckluft-Kraftwerke bekannt, bei denen in Schwachlastzeiten mittels überschüssiger elektrischer Energie Luft mit einem Druck von ca. 50 bis 70 bar in unterirdische Kavernen gepumpt wird, um einen Teil der überschüssigen elektrischen Energie in Form von Druckluft zwischenzuspeichern.It is known to convert electrical energy derived from wind energy into compressed air and to store it in underground compressed air reservoirs. Furthermore, so-called compressed air power plants are known in which at low load times by means of excess electrical energy air at a pressure of about 50 to 70 bar is pumped into underground caverns to temporarily store a portion of the excess electrical energy in the form of compressed air.

Der Erfindung liegt die Aufgabe zugrunde, ein System zum Speichern von mittels einer Photovoltaikanlage und/oder einer Windkraftanlage erzeugter elektrischer Energie sowie eine Verwendung eines Gasspeichers zur Verfügung zu stellen, die ein Zwischenspeichern von überschüssiger Energie mit möglichst geringem Aufwand ermöglichen.The invention has for its object to provide a system for storing generated by a photovoltaic system and / or a wind turbine electrical energy and a use of a gas storage available that allow caching of excess energy with the least possible effort.

Die Erfindung löst diese Aufgabe durch ein System nach Anspruch 1 und eine Verwendung nach Anspruch 6. Bevorzugte Ausführungsformen der Erfindung sind Gegenstand der Unteransprüche, die durch Bezugnahme zum Inhalt der Beschreibung gemacht werden.The invention achieves this object by a system according to claim 1 and a use according to claim 6. Preferred embodiments of the invention are the subject of the dependent claims, which are incorporated herein by reference.

Das System zum Speichern von elektrischer Energie, die mittels einer Photovoltaikanlage, einer Windkraftanlage und/oder mittels anderer Anlagen zur Nutzung regenerativer Energiequellen erzeugt wird, umfasst Drucklufterzeugungsmittel, beispielsweise Druckluftpumpen oder Druckluftkompressoren, die mittels der (oder zumindest eines Teils der) erzeugten elektrischen Energie aus Umgebungsluft Druckluft erzeugen. Unter Umgebungsluft wird das natürlich vorkommende Gasgemisch der Erdatmosphäre verstanden, das hauptsächlich aus den zwei Gasen Stickstoff und Sauerstoff und einem Anteil Wasserdampf besteht. Mit anderen Worten erzeugen die Drucklufterzeugungsmittel Druckluft unmittelbar aus der natürlich vorkommenden Luft in der Umgebung der Drucklufterzeugungsmittel. Weiter ist ein Druckluftspeicher zum Speichern der erzeugten Druckluft vorgesehen, wobei der Druckluftspeicher ein herkömmlicher Gasspeicher ist, wie er beispielsweise auch als Gasometer bekannt ist. Durch die Wiederverwendung bzw. das Umfunktionieren von bereits vorhandenen und häufig nicht mehr verwendeten Gasspeichern als Druckluft- bzw. Energiespeicher kann auf weitere Druckluftspeicher in dem Umfang verzichtet werden, in dem bereits vorhandene, ausrangierte Gasspeicher zur Verfügung stehen. Es ergibt sich folglich eine erhebliche Kostenersparnis.The system for storing electrical energy generated by a photovoltaic system, a wind turbine, and / or other renewable energy sources includes compressed air generating means, such as compressed air or compressed air compressors, by means of (or at least part of) the generated electrical energy Ambient air generate compressed air. Under ambient air is understood to mean the naturally occurring gas mixture of the earth's atmosphere, which consists mainly of the two gases nitrogen and oxygen and a proportion of water vapor. In other words, the compressed air generating means generates compressed air directly from the naturally occurring air in the vicinity of the compressed air generating means. Further, a compressed air reservoir for storing the generated compressed air is provided, wherein the compressed air reservoir is a conventional gas storage, as it is known for example as a gasometer. By reusing or re-functioning of existing and often no longer used gas storage as compressed air or energy storage can be dispensed with further compressed air storage to the extent in which already existing, discarded gas storage are available. This results in a considerable cost savings.

In einer Weiterbildung ist der Gasspeicher ein Reservoir, welches herkömmlich dazu vorgesehen ist, brennbare Gase zu speichern, wie Stadtgas, Erdgas, Flüssiggas, Biogas und/oder Klärgas.In a further development of the gas storage is a reservoir, which is conventionally intended to store combustible gases, such as city gas, natural gas, liquefied petroleum gas, biogas and / or sewage gas.

In einer Weiterbildung ist der Gasspeicher ein oberirdischer Gasspeicher oder ein bodennah verlegter Röhrenspeicher.In a further development, the gas storage is an above-ground gas storage or a bottom-mounted tube storage.

In einer Weiterbildung ist der Gasspeicher ein Hochdruckgasbehälter, insbesondere ein Kugelgasbehälter.In a development, the gas storage is a high-pressure gas container, in particular a spherical gas container.

In einer Weiterbildung umfasst das System eine druckluftbetriebene Turbine, die dazu ausgebildet ist, aus im Druckluftspeicher gespeicherter Druckluft elektrische Energie zu erzeugen bzw. zurückzugewinnen. Auf diese Weise schließt sich der Energiekreislauf.In one development, the system comprises a compressed-air-operated turbine which is designed to generate or recover electrical energy stored in the compressed-air accumulator. This closes the energy cycle.

Erfindungsgemäß wird ein herkömmlicher, d. h. ein bereits vorhandener, Gasspeicher, insbesondere ein Hochdruckgasbehälter, zum Speichern von mittels einer Photovoltaikanlage und/oder einer Windkraftanlage erzeugter elektrischer Energie in Form von Druckluft verwendet.According to the invention, a conventional, d. H. an already existing, gas storage, in particular a high-pressure gas container, used for storing generated by a photovoltaic system and / or a wind turbine electrical energy in the form of compressed air.

Die Erfindung wird nachfolgend unter Bezugnahme auf die Zeichnung beschrieben. Hierbei zeigt schematisch:The invention will be described below with reference to the drawing. This shows schematically:

1 ein System zum Speichern von mittels einer Photovoltaikanlage und/oder einer Windkraftanlage erzeugter elektrischer Energie. 1 a system for storing generated by a photovoltaic system and / or a wind turbine electrical energy.

1 zeigt ein System zum Speichern von mittels einer Photovoltaikanlage 1 oder einer Windkraftanlage 2 erzeugter elektrischer Energie, die exemplarisch durch eine photovoltaisch erzeugte Spannungen UP bzw. eine durch Windkraft erzeugte Spannung UW dargestellt ist. 1 shows a system for storing by means of a photovoltaic system 1 or a wind turbine 2 produced electrical energy, which is exemplified by a photovoltaic generated voltages UP or a voltage generated by wind power UW.

Das System umfasst Drucklufterzeugungsmittel in Form eines Druckluftkompressors 3, der mittels der durch die Photovoltaikanlage 1 oder der Windkraftanlage 2 erzeugten elektrischen Energie aus Umgebungsluft Druckluft P erzeugt, die in einem Druckluftspeicher in Form eines herkömmlichen Gasspeichers bzw. Gasometers 4 gespeichert wird.The system includes compressed air generating means in the form of a pneumatic compressor 3 that by means of the photovoltaic system 1 or the wind turbine 2 generated in electrical energy from ambient air compressed air P, which in a compressed air reservoir in the form of a conventional gas storage or gasometer 4 is stored.

Der Gasspeicher 4 ist ein Hochdruckgasbehälter, beispielsweise in Form eines Kugelgasbehälters, der ursprünglich dazu vorgesehen war, brennbare Gase zu speichern, wie Stadtgas, Erdgas, Flüssiggas, Biogas oder dergleichen, der jedoch zur Gasspeicherung nicht mehr verwendet wird.The gas storage 4 is a high-pressure gas container, for example in the form of a spherical gas container, which was originally intended to store combustible gases, such as town gas, natural gas, liquefied petroleum gas, biogas or the like, which is no longer used for gas storage.

Zur Rückgewinnung von elektrischer Energie ist eine druckluftbetriebene Turbine 5 vorgesehen, die dazu dient, aus im Druckluftspeicher 4 gespeicherter Druckluft elektrische Energie zu erzeugen, die exemplarisch als Spannung UT dargestellt ist.For the recovery of electrical energy is a compressed air turbine 5 provided, which serves, in the compressed air reservoir 4 stored compressed air to generate electrical energy, which is exemplified as a voltage UT.

Erfindungsgemäß wird ein herkömmlicher, d. h. ein bereits vorhandener, Gasspeicher, insbesondere ein Hochdruckgasbehälter, zum Speichern von mittels einer Photovoltaikanlage und/oder einer Windkraftanlage erzeugter elektrischer Energie in Form von Druckluft verwendet, so dass im Umfang der durch den Gasspeicher bereitgestellten Druckluftspeicherkapazität keine weiteren Druckluftspeicher notwendig sind. Dies ermöglicht eine sinnvolle und kostensparende Weiterverwendung bereits vorhandener, nicht mehr zur Gasspeicherung verwendeter Gasbehälter.According to the invention, a conventional, d. H. an already existing, gas storage, in particular a high-pressure gas container, used for storing generated by a photovoltaic system and / or a wind turbine electrical energy in the form of compressed air, so that no further compressed air storage are necessary in the scope of the compressed air storage capacity provided by the gas storage. This allows a meaningful and cost-saving re-use of existing, no longer used for gas storage gas tank.

Claims (6)

System zum Speichern von mittels einer Photovoltaikanlage (1) und/oder einer Windkraftanlage (2) erzeugter elektrischer Energie, mit – Drucklufterzeugungsmitteln (3), die mittels der erzeugten elektrischen Energie aus Umgebungsluft Druckluft erzeugen, und – einem Druckluftspeicher zum Speichern der erzeugten Druckluft, dadurch gekennzeichnet, dass – der Druckluftspeicher ein Gasspeicher (4) ist.System for storing by means of a photovoltaic system ( 1 ) and / or a wind turbine ( 2 ), with - compressed air generating means ( 3 ), which generate compressed air from ambient air by means of the generated electrical energy, and - a compressed air reservoir for storing the generated compressed air, characterized in that - the compressed air reservoir is a gas reservoir ( 4 ). System nach Anspruch 1, dadurch gekennzeichnet, dass der Gasspeicher ein Reservoir ist, welches herkömmlich dazu vorgesehen ist, brennbare Gase zu speichern, wie Stadtgas, Erdgas, Flüssiggas, Biogas und/oder Klärgas.System according to claim 1, characterized in that the gas reservoir is a reservoir, which is conventionally intended to store flammable gases, such as city gas, natural gas, liquefied petroleum gas, biogas and / or sewage gas. System nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Gasspeicher ein oberirdischer Gasspeicher oder ein bodennah verlegter Röhrenspeicher ist.System according to claim 1 or 2, characterized in that the gas storage is an above-ground gas storage or a near-bottom threaded tube storage. System nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass der Gasspeicher ein Hochdruckgasbehälter ist, insbesondere ein Kugelgasbehälter.System according to one of claims 1 to 3, characterized in that the gas storage is a high pressure gas container, in particular a ball gas container. System nach einem der Ansprüche 1 bis 4, gekennzeichnet durch eine druckluftbetriebene Turbine (5), die dazu ausgebildet ist, aus im Druckluftspeicher gespeicherter Druckluft elektrische Energie zu erzeugen.System according to one of claims 1 to 4, characterized by a compressed air driven turbine ( 5 ), which is designed to generate electrical energy stored in compressed air storage compressed air. Verwendung eines Gasspeichers (4) zum Speichern von mittels einer Photovoltaikanlage (1) und/oder einer Windkraftanlage (2) erzeugter elektrischer Energie in Form von Druckluft.Use of a gas storage ( 4 ) for storing by means of a photovoltaic system ( 1 ) and / or a wind turbine ( 2 ) generated electrical energy in the form of compressed air.
DE102011007613A 2011-04-18 2011-04-18 System for storing electrical energy e.g. solar energy generated by photovoltaic system, has reservoir designed as overhead gas storage for storing generated pressurized air and combustible gas, and turbine generating energy from air Ceased DE102011007613A1 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103762930A (en) * 2014-01-20 2014-04-30 青岛格兰德新能源有限公司 Photovoltaic gas-making system
EP3591791A1 (en) * 2018-07-02 2020-01-08 Hepu Technology Development (Beijing) Co. Ltd. Wind-solar-gas complementary and coupled power generation system and method
US20220145778A1 (en) * 2019-02-19 2022-05-12 Energy Dome S.P.A. Energy storage plant and process

Citations (1)

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Publication number Priority date Publication date Assignee Title
DE202006005175U1 (en) * 2006-03-31 2007-02-15 Geminus Gesellschaft für Management Innovationsförderung und Sonderprojekte e.G. Air compressed reservoir for use in large volume containment for supplying compressed air, has tube base with retaining containers connected to tube connections, where base serves for supplying and discharging compressed air

Patent Citations (1)

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Publication number Priority date Publication date Assignee Title
DE202006005175U1 (en) * 2006-03-31 2007-02-15 Geminus Gesellschaft für Management Innovationsförderung und Sonderprojekte e.G. Air compressed reservoir for use in large volume containment for supplying compressed air, has tube base with retaining containers connected to tube connections, where base serves for supplying and discharging compressed air

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103762930A (en) * 2014-01-20 2014-04-30 青岛格兰德新能源有限公司 Photovoltaic gas-making system
EP3591791A1 (en) * 2018-07-02 2020-01-08 Hepu Technology Development (Beijing) Co. Ltd. Wind-solar-gas complementary and coupled power generation system and method
US20220145778A1 (en) * 2019-02-19 2022-05-12 Energy Dome S.P.A. Energy storage plant and process
US11643964B2 (en) * 2019-02-19 2023-05-09 Energy Dome S.P.A. Energy storage plant and process
US11795874B2 (en) 2019-02-19 2023-10-24 Energy Dome S.P.A. Energy storage plant and process

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