WO2014153583A1 - Dispositif de stockage d'énergie - Google Patents

Dispositif de stockage d'énergie Download PDF

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Publication number
WO2014153583A1
WO2014153583A1 PCT/AT2014/050072 AT2014050072W WO2014153583A1 WO 2014153583 A1 WO2014153583 A1 WO 2014153583A1 AT 2014050072 W AT2014050072 W AT 2014050072W WO 2014153583 A1 WO2014153583 A1 WO 2014153583A1
Authority
WO
WIPO (PCT)
Prior art keywords
pressure accumulator
pressure
machine
energy
liquid
Prior art date
Application number
PCT/AT2014/050072
Other languages
German (de)
English (en)
Inventor
Bruno Lanbach
Original Assignee
Garamanta Beteiligungs Gmbh
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 Garamanta Beteiligungs Gmbh filed Critical Garamanta Beteiligungs Gmbh
Publication of WO2014153583A1 publication Critical patent/WO2014153583A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
    • F03B13/06—Stations or aggregates of water-storage type, e.g. comprising a turbine and a pump
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
    • F15B1/02—Installations or systems with accumulators
    • F15B1/04—Accumulators
    • F15B1/08—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2201/00—Accumulators
    • F15B2201/20—Accumulator cushioning means
    • F15B2201/205—Accumulator cushioning means using gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2201/00—Accumulators
    • F15B2201/30—Accumulator separating means
    • F15B2201/315—Accumulator separating means having flexible separating means
    • F15B2201/3152—Accumulator separating means having flexible separating means the flexible separating means being bladders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2201/00—Accumulators
    • F15B2201/30—Accumulator separating means
    • F15B2201/315—Accumulator separating means having flexible separating means
    • F15B2201/3154—Accumulator separating means having flexible separating means the flexible separating means being completely enclosed, e.g. using gas-filled balls or foam
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2201/00—Accumulators
    • F15B2201/30—Accumulator separating means
    • F15B2201/315—Accumulator separating means having flexible separating means
    • F15B2201/3155—Accumulator separating means having flexible separating means characterised by the material of the flexible separating 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
    • H02J15/00—Systems for storing electric energy
    • H02J15/003—Systems for storing electric energy in the form of hydraulic 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
    • Y02E10/20—Hydro 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
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids

Definitions

  • the invention relates to a device for storing energy, comprising a pressure accumulator with constant volume. Furthermore, the invention relates to a method for operating a device for storing energy, which includes a pressure accumulator, and a method for controlling a power grid. Finally, the invention relates to the use of a device for storing energy for providing control power.
  • Compressed-air storage power plants are storage power plants in which compressed air serves as energy storage. Currently compressed air storage power plants are primarily used for grid control such as for the provision of control power. When surplus power is not needed electrical energy is used to pressurize air and pump it into a memory. When power is required, this compressed air is converted to provide short-term electrical energy by the compressed air driving a turbine coupled to an electric generator.
  • a known approach is that one does not drive the turbine directly with the compressed air, but that the compressed air, a fuel gas such as natural gas is added.
  • This compressed fuel gas / air mixture is selectively burned to drive a gas turbine.
  • This gas turbine subsequently drives a generator that generates electricity.
  • the combustion of the fuel gas / air mixture increases the energy output and prevents icing.
  • a disadvantage of this concept is the fact that the use of a fossil fuel C0 2 is released into the atmosphere. In addition, such a power plant is dependent on the supply of fossil fuel.
  • the invention is based on the object to provide a device for storing energy and a method for operating such a device, in which losses in the energy storage are greatly reduced and the efficiency is increased in accordance with economic requirements.
  • the storage power plant should be climate-neutral and can also serve as an energy long-term storage.
  • the reliability and high efficiency when using a gas in the pressure accumulator should be ensured.
  • a device for storing energy comprising a pressure accumulator with constant volume, an operable by electrical energy machine and a turbomachine, wherein an electric generator can be coupled to the turbomachine, wherein the pressure accumulator has a balloon-shaped film container and with a Form is applied, wherein for storing energy, with the machine, a liquid is introduced into the pressure accumulator, while the volume of the pressure accumulator remains constant, wherein the Turbomachine is coupled to the pressure accumulator and the generation of electrical energy, the liquid from the pressure accumulator is drained, so that the turbomachine is driven.
  • An accumulator, the volume of which remains substantially constant, is thus subjected to an admission pressure which is above the normal pressure (1 bar).
  • a gas is used, so that a gas space is created.
  • a liquid is additionally introduced into this preloaded pressure accumulator by the pressure accumulator is connected via a line to a machine and the machine from a liquid reservoir, such as a water reservoir, liquid in the accumulator transported.
  • the accumulator is a gas-tight and liquid-tight container. Due to the additional introduction of the liquid, the existing pressure in the accumulator increases, so that the stored potential energy increases. If there is an excess of electrical energy, it can be converted into potential energy via the machine and stored.
  • the balloon-shaped film container separates the gas space from the liquid within the pressure reservoir. This prevents (partial) penetration of gas into the liquid.
  • the penetration or release of the gas in the liquid is undesirable for various reasons. If a gas which is readily soluble in the liquid is used, for example the combination of water as liquid and C0 2 as gas, then the pre-pressure drops until a balance of the vapor pressure of C0 2 in the liquid and the gas phase. If, for example, a hydrocarbon is used as the gas, traces of it may also be dissolved in the liquid which escape to the environment when the liquid is discharged.
  • the balloon-shaped film container may, for example, have a plastic film.
  • the balloon-shaped film container for the gas is substantially gas-tight.
  • pressurized fluid from the accumulator can be drained and drive a turbomachine.
  • This is coupled to an electrical generator and thus generates electricity that can be fed into a public grid.
  • the machine has a pump. The machine is then a fluid energy machine.
  • the turbomachine has a turbine.
  • Typical turbines such as Pelton turbine, Francis turbine, etc. come into question.
  • the machine and the turbomachine form a unit or that the turbomachine assumes the function of the machine.
  • An example of this would be a Francis turbine, which can be operated both as a pump and as a turbine.
  • a machine which can be operated by means of electrical energy in the sense according to the invention is preferably a machine which can both absorb and dispense energy.
  • the machine can therefore be an engine.
  • the machine can also be a working machine. Furthermore, it can be provided that the machine can switch between engine and work machine switch.
  • the device may have an electric generator coupled to the turbomachine.
  • the machine assumes both the function of a generator and that of a motor.
  • the coupled turbomachine may be designed in such a way that, depending on the flow direction of the liquid both as a pump and, as a pressure-reducing turbine works. A changeover of the function takes place by simply switching valves.
  • the pressure accumulator is exposed to air.
  • the pressure accumulator is not beschlagt with pure air, but with a gas or gas mixture, which passes at a certain pressure and at 23 ° C from the gaseous to the liquid state.
  • gases / gas mixtures are provided which are liquid at 23 ° C and pressures below 30 bar, preferably below 20 bar. Preference is given to those gases / gas mixtures in question, in the liquid state are immiscible with water or are only slightly miscible. In question are gases, for example propane, butane or mixtures thereof.
  • pressurization can be carried out with a gas / gas mixture which is miscible with a liquid phase.
  • C0 2 can be used in a mix of liquid and gaseous states to maintain system pressure - in this case 5.73 MPa.
  • the volume change between the two aggregate states of C0 2 is 1: 945. Due to the high solubility of C0 2 in the working medium water, a separation of the two media, for example, by a gas-tight film in the form of a deformable balloon, which is tightly closed with C0 2 is provided.
  • Advantageous in both latter embodiments is the almost constant system pressure in a wide range of the filling state of the memory.
  • a method for operating a device for storing energy which comprises a pressure accumulator, wherein for storing energy, a machine which is operated with electrical energy, introduces a liquid into the pressure accumulator, while the volume the pressure accumulator remains constant, so that the pressure in the accumulator is increased, wherein the accumulator is subjected to the introduction of the liquid with a gas pressure, wherein the generation of electrical energy, the liquid is discharged from the pressure accumulator and thereby drives a turbomachine, which with an electric Generator is coupled.
  • the gas pressure is at least 10 bar, preferably at least 30 bar, more preferably at least 50 bar at 20 ° C.
  • the invention further relates to the use of a device of the aforementioned type for the provision of control power.
  • the invention relates to a method for controlling a power network, wherein at a power surplus potential energy is stored in a device for storing energy of the aforementioned type and wherein to provide control power potential energy from the device is converted into electric power.
  • the control power also referred to as reserve power or imprecise as control energy, ensures the supply of electricity customers with exactly the required electrical power in case of unforeseen events in the power grid.
  • power adjustments can be carried out at regular power plants at short notice, fast-starting power plants (eg gas turbine power plants) can be started or pumped storage power plants can be used.
  • certain power customers with load control can be disconnected from the grid at short notice.
  • the pressure accumulator is not charged by a pump.
  • the pressure of water from a hydroelectric power station could be used.
  • the accumulator could be charged via the pressurized water and then release control power as needed.
  • energy is output as a control power of 1000 kWh within one hour.
  • Fig. 1 shows an embodiment of the invention.
  • Figs. 2 and 3 show variants for the pressure accumulator.
  • FIG. 1 shows schematically a storage power plant according to the invention.
  • This comprises a pressure accumulator 1 with constant volume, which may for example be a tunnel in a mountain.
  • the accumulator 1 in the form of a pressure stud is gas-tight and liquid-tight and is set before startup under pressure.
  • the gas pressure is dependent on the static and dynamic load capacity of the storage space, but at 20 ° C. is preferably at least 10 bar, ideally at least 50 bar.
  • a machine 4 which can be operated by means of electrical energy is provided which connects the pressure accumulator 1 to the liquid reservoir 8 via a line 3.
  • the machine 4 is designed as a pump. If there is an excess of electrical energy, the pump 4 pumps liquid from the liquid reservoir 8 into the energy storage unit Pressure accumulator.
  • the liquid is water in the simplest case.
  • the pressure increases and thus also the potential energy, while the volume of the pressure accumulator remains constant.
  • the turbomachine 7 is coupled to the pressure accumulator 1 and for generating electrical energy, the liquid is discharged from the pressure accumulator 1, so that the turbomachine 7 is driven.
  • the turbomachine 7 may be a turbine, such as a Francis or Pelton turbine.
  • the valves 5, 6, the inflow and outflow from the pressure accumulator 1 is controlled.
  • FIG. 2 shows a pressure accumulator 1 with a gas space separated from the liquid space 2 '.
  • extended pressure accumulators 1 such as a high-pressure gas transmission network.
  • the structure may correspond to that of FIG. 1, for example.
  • the invention is based on the finding that instead of a compression of air from normal pressure to storage pressure, for example, 1:50 to 1: 100, arise in the large amounts of waste heat, the pressure is increased only for example 1: 2, in the mold, that the memory for the first time with a form of, for example, 50 bar is equipped and the energy storage via the medium of water, which is pumped into this form memory, takes place.
  • the processing of the stored energy takes place in the reverse manner again via the liquid medium, preferably water, in a turbine, for example a Pelton turbine. Since during processing an incompressible liquid is used instead of an expandable and thus cooled, gaseous medium, no icing of the turbine can take place. Due to the factor of 770 higher density of water, compared to air, the turbine size, with the same output power is much smaller than a gas turbine with the same weight air.
  • As storage for the pressure storage can also a public network, such as the high-pressure Gas transmission network, which is 144 000 km long in Germany and is available nationwide, can be used and used for a storage power plant according to the invention.
  • a public network such as the high-pressure Gas transmission network, which is 144 000 km long in Germany and is available nationwide, can be used and used for a storage power plant according to the invention.
  • the energy exchange takes place for the gas network energy neutral, since the introduction of the storage medium water is equivalent to "charging” and the execution of the amount of water with "unloading".
  • the advantage is that in comparison of the volume of the gas network to the water store there is a many times higher volume ratio, therefore the pressure remains constant and no additional volume of space for the pressure reserves must be provided.
  • Fig. 3 shows a pressure accumulator 1 with a liquid space 2 and a balloon-shaped film container 11 in which, for example, C0 2 in gaseous 13 and liquid 12 state of aggregation, the maintenance of a constant system pressure, for example 5.73Mp allows. Otherwise, the structure corresponds to that of the example of FIG. 1.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)

Abstract

La présente invention concerne un dispositif de stockage d'énergie. Ledit dispositif comprend un accumulateur de pression (1) de volume constant, une machine (4) pouvant fonctionner avec de l'énergie électrique et une machine fluidique (7). Un générateur électrique (9) peut être couplé à la machine fluidique (7). L'accumulateur de pression (1) comporte un récipient à membrane (11) se présentant sous la forme d'un ballon. L'accumulateur de pression (1) est alimenté en gaz à une pression d'admission. Pour stocker de l'énergie un liquide peut être introduit dans l'accumulateur de pression (1) au moyen de la machine (4) tandis que le volume de l'accumulateur de pression (1) reste constant. La machine fluidique (7) est couplée à l'accumulateur de pression (1). Pour générer de l'énergie électrique, le liquide est soutiré de l'accumulateur de pression (1) de manière à pouvoir entraîner la machine fluidique (7).
PCT/AT2014/050072 2013-03-25 2014-03-25 Dispositif de stockage d'énergie WO2014153583A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATGM50041/2013U AT13733U1 (de) 2013-03-25 2013-03-25 Druckspeicher
ATGM50041/2013 2013-03-25

Publications (1)

Publication Number Publication Date
WO2014153583A1 true WO2014153583A1 (fr) 2014-10-02

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AT (1) AT13733U1 (fr)
WO (1) WO2014153583A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114934869A (zh) * 2022-05-20 2022-08-23 西安热工研究院有限公司 一种低速等温压缩联合储能系统及方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014219678A1 (de) * 2014-09-29 2016-03-31 Siemens Aktiengesellschaft Vorrichtung und Verfahren zum Speichern von Energie
WO2017174047A1 (fr) * 2016-04-08 2017-10-12 Dirk Weber Stockage d'électricité à base d'air comprimé et d'eau, apte à démarrer de manière autonome

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7281371B1 (en) * 2006-08-23 2007-10-16 Ebo Group, Inc. Compressed air pumped hydro energy storage and distribution system
US20100018196A1 (en) * 2006-10-10 2010-01-28 Li Perry Y Open accumulator for compact liquid power energy storage
WO2011101647A2 (fr) * 2010-02-22 2011-08-25 Hilary Champion Systèmes de stockage d'énergie
DE102012015732A1 (de) * 2011-08-27 2013-02-28 Hans Martin Giese Verfahren und Anordnungen zur Aufnahme und Abgabe elektrischer Energie in Gasdruckspeicherwerken

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH626138A5 (fr) * 1978-11-28 1981-10-30 Charmilles Sa Ateliers

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7281371B1 (en) * 2006-08-23 2007-10-16 Ebo Group, Inc. Compressed air pumped hydro energy storage and distribution system
US20100018196A1 (en) * 2006-10-10 2010-01-28 Li Perry Y Open accumulator for compact liquid power energy storage
WO2011101647A2 (fr) * 2010-02-22 2011-08-25 Hilary Champion Systèmes de stockage d'énergie
DE102012015732A1 (de) * 2011-08-27 2013-02-28 Hans Martin Giese Verfahren und Anordnungen zur Aufnahme und Abgabe elektrischer Energie in Gasdruckspeicherwerken

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114934869A (zh) * 2022-05-20 2022-08-23 西安热工研究院有限公司 一种低速等温压缩联合储能系统及方法

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Publication number Publication date
AT13733U1 (de) 2014-07-15

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