WO2002084839A2 - Generating electricity - Google Patents

Generating electricity Download PDF

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Publication number
WO2002084839A2
WO2002084839A2 PCT/GB2002/001656 GB0201656W WO02084839A2 WO 2002084839 A2 WO2002084839 A2 WO 2002084839A2 GB 0201656 W GB0201656 W GB 0201656W WO 02084839 A2 WO02084839 A2 WO 02084839A2
Authority
WO
WIPO (PCT)
Prior art keywords
fuel
generator
arrangement
power
electricity
Prior art date
Application number
PCT/GB2002/001656
Other languages
French (fr)
Other versions
WO2002084839A3 (en
Inventor
Henry Lawson-Tancred
Original Assignee
Sir Henry Lawson-Tancred Sons & Co Ltd
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
Priority claimed from GB0109020A external-priority patent/GB0109020D0/en
Priority claimed from GB0201961A external-priority patent/GB0201961D0/en
Application filed by Sir Henry Lawson-Tancred Sons & Co Ltd filed Critical Sir Henry Lawson-Tancred Sons & Co Ltd
Priority to AU2002246257A priority Critical patent/AU2002246257A1/en
Publication of WO2002084839A2 publication Critical patent/WO2002084839A2/en
Publication of WO2002084839A3 publication Critical patent/WO2002084839A3/en

Links

Classifications

    • 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
    • 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
    • F03D—WIND MOTORS
    • F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
    • F03D9/20—Wind motors characterised by the driven apparatus
    • F03D9/25—Wind motors characterised by the driven apparatus the apparatus being an electrical generator
    • 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
    • F03D—WIND MOTORS
    • F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
    • F03D9/20—Wind motors characterised by the driven apparatus
    • F03D9/28—Wind motors characterised by the driven apparatus the apparatus being a pump or a compressor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2220/00—Application
    • F05B2220/61—Application for hydrogen and/or oxygen production
    • 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
    • H02J2300/10—The dispersed energy generation being of fossil origin, e.g. diesel 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
    • 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
    • H02J2300/30—The power source being a fuel cell
    • 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
    • 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
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction
    • 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
    • Y02E10/70—Wind energy
    • Y02E10/76—Power conversion electric or electronic aspects
    • 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
    • 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
    • Y02E60/30—Hydrogen technology
    • Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
    • 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
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P80/00—Climate change mitigation technologies for sector-wide applications
    • Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier

Definitions

  • This invention relates to generating electricity.
  • Electricity can be generated from so-called renewable energy sources, such as wind and wave power and solar radiation. Improvements in efficiency brought about by better engineering and technology have made the use of renewable energy sources more attractive, economically, and visible evidence of this is in the increasing number of wind farms coming into operation in recent times.
  • the cost per unit of electricity generated has fallen steadily to a point where wind power can compete with more conventional means of generation, such as coal and oil-fired generators, and the renewable energy source has the advantage of being eco-friendly, if noise and landscape blight are left out of the equation.
  • no greenhouse gases are released, and there is no long term problem of storage of radioactive waste and no risk of fissile materials falling into the wrong hands.
  • the present invention provides a solution to the problem of the variability of renewable energy sources.
  • the invention comprises an electricity-generating arrangement comprising an electrical generator and a power arrangement for the same using a variable renewable energy source, the generator being connected to supply an electricity demand and an electrolyser producing fuel from electrical power in excess of that used to supply the demand and a fuel using arrangement adapted to convert said fuel to electricity supplementary to said generator to supply excess demand.
  • the power arrangement may comprise a wind turbine, a wave power arrangement or a solar energy converter.
  • the generator may be a conventional rotary generator, which may be connected to be driven directly by the power arrangement, or indirectly.
  • An indirect drive arrangement may comprise an hydraulic motor, the power arrangement driving an hydraulic pump.
  • Several wind turbines for example, may drive hydraulic pumps mounted directly on the axes of the turbines, the pumps being connected to a supply for a single hydraulic motor driving the generator.
  • Such an arrangement incidentally, will address another problem with wind turbine operation, namely that of noise, to which the conventional mechanical drive train contributes significantly.
  • the fuel using arrangement may comprise an auxiliary driver for the generator.
  • the auxiliary driver may comprise an internal combustion engine powered by fuel, such as hydrogen, generated by the electrolyser.
  • the engine may be adapted for use also with a fuel, which may be a hydrocarbon fuel such as diesel fuel, other than the fuel produced by the electrolyser.
  • the hydrogen can be stored under pressure, to reduce storage volume.
  • the fuel using arrangement may comprise a fuel cell, and the apparatus may then also comprise a static convertor converting dc produced by the fuel cell into ac suitable for the electricity demand.
  • Figure 1 is a diagrammatic representation of a first embodiment
  • Figure 2 is a diagrammatic representation of a second embodiment.
  • the drawings illustrate an electricity-generating arrangement comprising an electrical generator 11 and a power arrangement 12 for the same using a variable renewable energy source, in this case, wind power.
  • the generator 11 is connected to supply an electricity demand 13, which may be a national or local grid system, or may be a free-standing consumer such as a factory or commercial complex.
  • the generator 11 has an auxiliary driver 14, and the arrangement has an electrolyser 15 producing fuel for the auxiliary driver 14 from electrical power surplus to instantaneous demand.
  • the power arrangement 12 comprises a plurality - five are shown, but wind farms of any size may be accommodated - of wind turbines 16, typically of 10m radius.
  • Each turbine 16 is mounted on a tower 17 on a combined thrust and pintle bearing 18.
  • On the shaft 19 of each turbine 16 is mounted an hydraulic pump 21, which can, for example, be a radial piston fixed displacement hydraulic motor, run as a pump.
  • a control arrangement 27 senses when demand for electricity produced by the generator driven by the wind turbines falls below what the generator can produce, and diverts power to a rectifier 28 which supplies dc current to the electrolyser 15 which generates hydrogen by electrolysis of water.
  • the hydrogen is stored in a container 31, which may be pressurised. Oxygen will also be produced by the electrolyser, and may be collected or vented as desired.
  • the auxiliary driver 14 in the form of an internal combustion engine fuelled by hydrogen from the container 31 is connected, again by a one way shaft coupling 33, to drive the generator 11.
  • the control arrangement 27 will sense when demand for electricity exceeds supply powered by the wind turbines, and will automatically cut in the auxiliary driver 14 to provide auxiliary power or, in dead calm conditions, all the power required to supply the demand.
  • the control arrangement 27 will also provide torque control on the wind turbine rotors to optimise power generation in different wind conditions, and will monitor hydrogen stocks and pressure so as to avoid overproduction of hydrogen in good wind conditions when there is little external demand.
  • arrangements may be made to bottle hydrogen produced surplus to requirements of the generating arrangement, for use, for example, in vehicles or other equipment.
  • the auxiliary power driver 14 is replaced by a fuel cell 41 supplied with hydrogen fluid from the store 31 connected to a static inverter 42 which is connected to the demand 13 though appropriate interface arrangements, not shown.
  • the arrangement may be made to operate completely automatically, under computer control, and communicate with a central control hub for maintenance scheduling, fault reporting and so forth.
  • auxiliary diesel power may be provided, possibly in the form of a dual fuel auxiliary driver.
  • electrolytic dissociation of water appears to be simple and inexpensive, it may be that other dissociable and recombinable substances could be used to power the auxiliary driver, while maintaining the eco-friendly nature of water-generated hydrogen, the combustion product of which is, of course, water.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Supply And Distribution Of Alternating Current (AREA)
  • Wind Motors (AREA)
  • Control Of Eletrric Generators (AREA)

Abstract

There is disclosed an electricity-generating arrangement comprising an electricity generator (11) and a power arrangement (12) for the same using a variable renewable energy source, the generator (11) being connected to supply an electricity demand and an electrolyser (15) producing fuel from electrical power surplus to instantaneous demand, and a fuel using arrangement (14) adapted to convert said fuel to electricity supplementary to said generator to supply excess demand.

Description

Generating Electricity
This invention relates to generating electricity.
Electricity can be generated from so-called renewable energy sources, such as wind and wave power and solar radiation. Improvements in efficiency brought about by better engineering and technology have made the use of renewable energy sources more attractive, economically, and visible evidence of this is in the increasing number of wind farms coming into operation in recent times. The cost per unit of electricity generated has fallen steadily to a point where wind power can compete with more conventional means of generation, such as coal and oil-fired generators, and the renewable energy source has the advantage of being eco-friendly, if noise and landscape blight are left out of the equation. Certainly, no greenhouse gases are released, and there is no long term problem of storage of radioactive waste and no risk of fissile materials falling into the wrong hands.
Problems remain, however, with renewable energy sources, in that they are not constantly available. Even when sited in optimum wind regime locations, there are days when wind turbines are becalmed, as well as days when the wind is too strong for safe operation, and similar consideration apply to wave and solar power. So, there has to be back-up power from conventional generating plant, and wind power is seen still as merely a useful adjunct to conventional generation.
The present invention provides a solution to the problem of the variability of renewable energy sources.
The invention comprises an electricity-generating arrangement comprising an electrical generator and a power arrangement for the same using a variable renewable energy source, the generator being connected to supply an electricity demand and an electrolyser producing fuel from electrical power in excess of that used to supply the demand and a fuel using arrangement adapted to convert said fuel to electricity supplementary to said generator to supply excess demand.
The power arrangement may comprise a wind turbine, a wave power arrangement or a solar energy converter.
The generator may be a conventional rotary generator, which may be connected to be driven directly by the power arrangement, or indirectly. An indirect drive arrangement may comprise an hydraulic motor, the power arrangement driving an hydraulic pump. Several wind turbines, for example, may drive hydraulic pumps mounted directly on the axes of the turbines, the pumps being connected to a supply for a single hydraulic motor driving the generator. Such an arrangement, incidentally, will address another problem with wind turbine operation, namely that of noise, to which the conventional mechanical drive train contributes significantly.
The fuel using arrangement may comprise an auxiliary driver for the generator. The auxiliary driver may comprise an internal combustion engine powered by fuel, such as hydrogen, generated by the electrolyser. The engine may be adapted for use also with a fuel, which may be a hydrocarbon fuel such as diesel fuel, other than the fuel produced by the electrolyser.
The hydrogen can be stored under pressure, to reduce storage volume.
The fuel using arrangement may comprise a fuel cell, and the apparatus may then also comprise a static convertor converting dc produced by the fuel cell into ac suitable for the electricity demand. Embodiments of electricity generating arrangements according to the invention will now be described with reference to the accompanying drawings, in which:
Figure 1 is a diagrammatic representation of a first embodiment; and
Figure 2 is a diagrammatic representation of a second embodiment.
The drawings illustrate an electricity-generating arrangement comprising an electrical generator 11 and a power arrangement 12 for the same using a variable renewable energy source, in this case, wind power. The generator 11 is connected to supply an electricity demand 13, which may be a national or local grid system, or may be a free-standing consumer such as a factory or commercial complex. In Figure 1 the generator 11 has an auxiliary driver 14, and the arrangement has an electrolyser 15 producing fuel for the auxiliary driver 14 from electrical power surplus to instantaneous demand.
The power arrangement 12 comprises a plurality - five are shown, but wind farms of any size may be accommodated - of wind turbines 16, typically of 10m radius. Each turbine 16 is mounted on a tower 17 on a combined thrust and pintle bearing 18. On the shaft 19 of each turbine 16 is mounted an hydraulic pump 21, which can, for example, be a radial piston fixed displacement hydraulic motor, run as a pump. Fluid feed and pressure lines 22, 23, to and from the pumps 21 in the towers 17 and join a common hydraulic circuit including a pressurised oil reservoir 24 and an hydraulic motor 25 which drives the generator 11 via a one way shaft coupling 26.
A control arrangement 27 senses when demand for electricity produced by the generator driven by the wind turbines falls below what the generator can produce, and diverts power to a rectifier 28 which supplies dc current to the electrolyser 15 which generates hydrogen by electrolysis of water. The hydrogen is stored in a container 31, which may be pressurised. Oxygen will also be produced by the electrolyser, and may be collected or vented as desired.
The auxiliary driver 14 in the form of an internal combustion engine fuelled by hydrogen from the container 31 is connected, again by a one way shaft coupling 33, to drive the generator 11. The control arrangement 27 will sense when demand for electricity exceeds supply powered by the wind turbines, and will automatically cut in the auxiliary driver 14 to provide auxiliary power or, in dead calm conditions, all the power required to supply the demand.
The control arrangement 27 will also provide torque control on the wind turbine rotors to optimise power generation in different wind conditions, and will monitor hydrogen stocks and pressure so as to avoid overproduction of hydrogen in good wind conditions when there is little external demand. Of course, arrangements may be made to bottle hydrogen produced surplus to requirements of the generating arrangement, for use, for example, in vehicles or other equipment.
In the embodiment of Figure 2, the auxiliary power driver 14 is replaced by a fuel cell 41 supplied with hydrogen fluid from the store 31 connected to a static inverter 42 which is connected to the demand 13 though appropriate interface arrangements, not shown.
The arrangement may be made to operate completely automatically, under computer control, and communicate with a central control hub for maintenance scheduling, fault reporting and so forth.
The configuration of the electricity-generating equipment as regards the production capacity of the electrolyser and the hydrogen storage capacity will advantageously take into account the wind regime at the site and the electricity demand pattern. For periods when insufficient hydrogen has been generated, auxiliary diesel power may be provided, possibly in the form of a dual fuel auxiliary driver.
Whilst electrolytic dissociation of water appears to be simple and inexpensive, it may be that other dissociable and recombinable substances could be used to power the auxiliary driver, while maintaining the eco-friendly nature of water-generated hydrogen, the combustion product of which is, of course, water.

Claims

1. An electricity-generating arrangement comprising an electricity generator and a power arrangement for the same using a variable renewable energy source, the generator being connected to supply an electricity demand and an electrolyser producing fuel from electrical power surplus to instantaneous demand, and a fuel using arrangement adapted to convert said fuel to electricity supplementary to said generator to supply excess demand.
2. A generating arrangement according to claim 1, in which the power arrangement comprises a wind turbine.
3. A generating arrangement according to claim 2, in which the power arrangement comprises a plurality of wind turbines coupled together.
4. A generating arrangement according to claim 2 or claim 3, in which a wind turbine drives an hydraulic pump.
5. A generating arrangement according to claim 4, in which the power arrangement comprises an hydraulic motor driving the generator.
6. A generating arrangement according to claim 1, in which the power arrangement comprises a wave power arrangement.
7. A generating arrangement according to claim 1, in which the power arrangement comprises a solar energy converter.
8. A generator arrangement according to any one of claims 1 to 7, in which the fuel using arrangement comprises an auxiliary driver for the generator.
9. A generating arrangement according to claim 8, in which the auxiliary driver comprises an internal combustion engine powered by fuel produced by the electrolyser.
10. A generating arrangement according to claim 9, in which the internal combustion engine is a dual fuel engine.
11 A generating arrangement according to any one of claims 1 to 10, in which the fuel is hydrogen.
PCT/GB2002/001656 2001-04-11 2002-04-09 Generating electricity WO2002084839A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2002246257A AU2002246257A1 (en) 2001-04-11 2002-04-09 Generating electricity

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB0109020A GB0109020D0 (en) 2001-04-11 2001-04-11 Coupling together remote located medium size electricity generating windmills
GB0109020.8 2001-04-11
GB0201961A GB0201961D0 (en) 2002-01-29 2002-01-29 Generating electricity
GB0201961.0 2002-01-29

Publications (2)

Publication Number Publication Date
WO2002084839A2 true WO2002084839A2 (en) 2002-10-24
WO2002084839A3 WO2002084839A3 (en) 2003-10-30

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WO (1) WO2002084839A2 (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2400612A (en) * 2003-04-15 2004-10-20 Empower Corp H Supply of homopolar electricity for water electrolysis
WO2004092579A1 (en) * 2003-04-15 2004-10-28 Renergys Gmbh Power supply device for a wind power station
US7199482B2 (en) 2005-06-30 2007-04-03 General Electric Company System and method for controlling effective wind farm power output
NL1030682C2 (en) * 2005-12-16 2007-06-19 Hennequin Beheer B V Energy storage and generation control system, uses fly wheel generator to store excess energy and release it during periods of energy shortage
US7418820B2 (en) 2002-05-16 2008-09-02 Mhl Global Corporation Inc. Wind turbine with hydraulic transmission
WO2009131459A2 (en) * 2008-04-24 2009-10-29 Ocean Wave Rocker As Energy storage system
WO2012066517A3 (en) * 2010-11-19 2012-07-19 New Renovable Energy Srl Energy production plant optimized to be supplied by more than one source of energy
CN103413182A (en) * 2013-07-24 2013-11-27 清华大学 Monthly electricity generation and transmission integrated maintenance optimization method based on induced function
EP1719235B1 (en) 2004-01-23 2017-09-27 Stuart Energy Systems Corporation An energy network using electrolysers and fuel cells
CN109617059A (en) * 2018-12-20 2019-04-12 四川大学 A kind of multi-energy complementation electricity generation system capacity collocation method of aqueous light
CN110266041A (en) * 2019-06-18 2019-09-20 姚志伟 A kind of energy storage, which is combined, regulates and controls connecting internet system with the wind-power electricity generation of inversion is concentrated
EP3859930A1 (en) 2020-01-29 2021-08-04 Siemens Gamesa Renewable Energy A/S Method for operating at least one wind turbine and wind turbine or group of wind turbines

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2384964A1 (en) * 1977-06-16 1978-10-20 Spie Batignolles Wind powered electrical generator - has hydraulic circuit between impellers and generator with load limiting safety controls
JPS6220889A (en) * 1985-07-18 1987-01-29 Terukazu Suzuki Production of auxiliary fuel by natural force-utilizing power generation electrolysis and its application
DE3704280A1 (en) * 1987-02-12 1988-08-25 Bernhard Dipl Ing Krause Wind-hydrogen power station
DE3714858A1 (en) * 1987-05-05 1988-11-24 Walter Schopf Gearing for small wind and water power plants
WO1994019605A1 (en) * 1993-02-26 1994-09-01 Egon Gelhard Wind turbine
WO1998001672A1 (en) * 1996-07-09 1998-01-15 Euwind Systeme Gmbh Windkraftanlagen Rotor for a wind power station

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2384964A1 (en) * 1977-06-16 1978-10-20 Spie Batignolles Wind powered electrical generator - has hydraulic circuit between impellers and generator with load limiting safety controls
JPS6220889A (en) * 1985-07-18 1987-01-29 Terukazu Suzuki Production of auxiliary fuel by natural force-utilizing power generation electrolysis and its application
DE3704280A1 (en) * 1987-02-12 1988-08-25 Bernhard Dipl Ing Krause Wind-hydrogen power station
DE3714858A1 (en) * 1987-05-05 1988-11-24 Walter Schopf Gearing for small wind and water power plants
WO1994019605A1 (en) * 1993-02-26 1994-09-01 Egon Gelhard Wind turbine
WO1998001672A1 (en) * 1996-07-09 1998-01-15 Euwind Systeme Gmbh Windkraftanlagen Rotor for a wind power station

Non-Patent Citations (6)

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