GB2512057A - Tidal energy powered pumped storage systems - Google Patents

Tidal energy powered pumped storage systems Download PDF

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Publication number
GB2512057A
GB2512057A GB1304903.6A GB201304903A GB2512057A GB 2512057 A GB2512057 A GB 2512057A GB 201304903 A GB201304903 A GB 201304903A GB 2512057 A GB2512057 A GB 2512057A
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United Kingdom
Prior art keywords
seawater
tidal stream
tidal
turbine
pumped
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GB1304903.6A
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GB201304903D0 (en
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Paul Hales
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Individual
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Priority to GB1304903.6A priority Critical patent/GB2512057A/en
Publication of GB201304903D0 publication Critical patent/GB201304903D0/en
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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
    • 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
    • F03B13/12—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy
    • F03B13/26—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using tide energy
    • F03B13/264—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using tide energy using the horizontal flow of water resulting from tide movement
    • 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
    • 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
    • F03B3/00—Machines or engines of reaction type; Parts or details peculiar thereto
    • F03B3/10—Machines or engines of reaction type; Parts or details peculiar thereto characterised by having means for functioning alternatively as pumps or turbines
    • F03B3/106—Machines or engines of reaction type; Parts or details peculiar thereto characterised by having means for functioning alternatively as pumps or turbines the turbine wheel and the pumps wheel being mounted in adjacent positions on the same shaft in a single casing
    • 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
    • F05B2220/62—Application for desalination
    • 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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00—Water conservation; Efficient water supply; Efficient water use
    • Y02A20/124—Water desalination
    • Y02A20/138—Water desalination using renewable energy
    • Y02A20/144—Wave 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
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/30—Energy from the sea, e.g. using wave energy or salinity gradient
    • 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

Abstract

A tidal flow powered pumped storage system comprises a tidal turbine 2 connected to a pump 3 and an electrical generator 13. The turbine 2 can supply electricity or pumped water depending on demand and the amount of power available from the flow. Stored water may be used to boost output from the tidal stream turbine by directing it to the turbine inlet via boost control valves 15 and a tidal flow boost diffuser 17 to increase flow speed through the turbine 2. Stored water may alternatively power a conventional turbine or reverse osmosis desalination plant. Seawater reservoir 5 may be used for aquaculture farming.

Description

BACKGROUND
THE FIELD OF THE PRESENT INVENTION COMPRISES POWER
GENERATION, AND MORE SPECIFICALLY, POWER GENERATION BY
RENEWABLE RESOURCES AND EVIRONMENTALLY SOUND ENERGY
STORAGE SYSTEMS THAT HAVE NOT YET BEEN EXPLOITED.
THE WORLD S REQUIREMENT FOR ENERGY IS WELL UNDERSTOOD
AND THE SEARCH FOR ALTERNATIVE AND RENEWABLE METHODS
HAS BECOME URGENT AND WIDE SPREAD.
ONE OF THE LARGEST AREAS OF KNOWN RENEWABLE POWER
RESOURCE IS THE LARGE MOVEMENTS OF WATER.
THERE ARE MANY LOCATIONS THROUGHOUT THE WORLD WHERE
LARGE MASSES OF WATER FLOW IN A CONSTANT AND RELIABLE
MANNER, ALTHOUGH THE FLOWS ARE AT LOW VELOCITY.
SUCH LOCATIONS, WILL PROVIDE GREAT OPPORTUNITIES FOR EXPLOITATION OF KINETIC ENERGY, INCLUDE TIDAL FLOWS, RIVER FLOWS, AND DEEP OCEAN CURRENTS.
FOR EXAMPLE, THE KUROSHIO CURRENT FLOWING PAST THE COAST OF JAPAN AT SHIKOKU MOVES AT A RATE UP TO 5.5 KNOTS, WITHOUT THE VARIATIONS COMMON TO WIND AND SOLAR POWER.
LIKEWISE, THE GULF CURRENTS FLOW ALONG THE ATLANTIC COAST OF THE UNITED STATES AT A SIMILAR VELOCITY, THESE ARE VAST
AREAS OF WATER MOVING AT STRONG FLOW RATES AND THERE ARE
EVEN GREATER AREAS SUCH AS THE COASTAL AREAS AROUND THE
BRITISH ISLES THAT HAVE STEADY TIDAL FLOW RATES ABOVE 3 KNOTS.
SEVERAL TIDAL STREAM TURBINES, SUCH AS THE HALES TIDAL STREAM TURBINE, PATENT GB2435908, ARE DESIGNED TO OPERATE
IN THE SHALLOW AND TURBULENT TIDAL FLOWS FOUND IN COASTAL
WATERS AND THE VERTICAL AXIS OUTPUT SHAFT AND HIGH TORQUE
OUTPUT SUIT THE REQUIREMENTS OF THIS INVENTION.
THE PRESENT INVENTION IS DESIGNED TO PROVIDE RENEWABLE
ENERGY STORAGE SYSTEMS THAT NOT ONLY PROVIDE A
SUBSTANTIAL AMOUNT OF POTENTIAL ENERGY IN THE FORM OF A
VOLUME OF FLUID WITH A HIGH GRAVITATIONAL HEAD, BUT ALSO BY NOVEL USE OF PIPEWORK AND CONTROLLING VALVES, ALLOW THE
SYSTEM TO BE SIMPLER THAN PRESENT DAY FORMS OF PUMP
STORAGE SYSTEMS.
THIS WILL LEAD TO LESS MAINTENANCE AND INSTALLATION
COSTS AND PROVIDE AN ALMOST CLOSED LOOP RENEWABLE
ENERGY SYSTEM THAT WILL OVERCOME ALL THE INTERMITTENCY
PROBLEMS NORMALLY ASSOCIATED WITH RENEWABLE ENERGY.
THE PRESENT INVENTION WILL ALSO ALLOW THE OTHER MAJOR
ISSUE WITH RENEWABLE ENERGY, SUPPLY PERIODS TO MATCH THE PERIODS OF HIGH POWER CONSUMPTION, TO BE OVERCOME.
STATEMENT OF INVENTION
THE PRESENT INVENTION GENERALLY COMPRISES SYSTEMS AND
COMPONENTS TO PROVIDE A NEW AND NOVEL WAY OF SUPPLYING
STORED POTENTIAL ENERGY IN A FORM THAT WILL BENEFIT LOCAL
ENERGY CONSUMPTION.
AT THE PRESENT TIME, THE NORMAL OPERATION OF PUMPED
STORAGE ENERGY SYSTEMS USES THE ORIGINAL ELECTRICAL
GENERATION SET IN REVERSE TO PUMP WATER FROM A LOWER
SOURCE, NORMALLLY A LAKE, UP TO A SPECIAL RESERVOIR DURING TIMES WHEN ELECTRICAL POWER DEMAND IS LOW. WITH THIS SYSTEM, NOT ONLY DOES THE USE OF THESE ELECTRICAL
GENERATORS TAKE MORE POWER TO OPERATE AS A PUMP THAN
THEY PRODUCE AS A GENERATOR, BUT WHILE PUMPING, THEY
SOURCE ELECTRICAL ENERGY FROM ANOTHER NORMALLY FOSSIL
FUELED GENERATION STATIONS, ADDING TO THE CARBON FOOTPRINT.
USING A SEAWATER PUMPED STORAGE SYSTEM WHICH IS
OPERATED WITH TIDAL STREAM TIDAL TURBINES AS THE PUMPING
UNITS, PROVIDES THE SAME RAPID POWER SUPPLY AT PERIODS OF
HIGH DEMAND BUT WITHOUT EXTRA CARBON FOOTPRINT BEYOND
THE MANUFACTURE AND BUILD PERIOD.
* A 30MW SEAWATER PUMPED HEAD SYSTEM HAS BEEN CONSTRUCTED AT YANBARU, OKINAWA, JAPAN, WHICH PROVIDES
PRIOR ART TO THE FEASIBLITY OF CONSTRUCTING A SEAWATER
PUMPED HEAD SYSTEM WITHOUT DETRIMENTAL EFFECT TO THE
GROUND WATER OR ENVIRONMENT. THIS JAPANESE PUMPED HEAD * SYSTEM USED THE CONVENTIONAL REVERSE FLOW TYPE ELECTRICAL GENERATOR TO PUMP WATER UP FROM THE SEA ETC.
TIDAL STREAM TURBINES CAN BE USED TO PUMP THE SEAWATER
* UP TO THE HIGH LEVEL STORAGE RESERVOIR WITH STANDARD
ELECTRICAL GENERATORS BEING USED TO PRODUCE ELECTRICAL
POWER WHEN REQUIRED ON A SEPARATE DOWN PIPE.
ALTERNATIVELY, THE TIDAL STREAM TURBINES WITH COMBINE ELECTRICAL GENERATORS AND SEAWATER PUMPS FI1TED ON THEIR
OUTPUT SHAFTS CAN BE USED FOR ELECTRICAL GENERATION WHEN
POWER DEMAND IS HIGH AND THE TIDAL FLOWS ARE FAST, THEN,
WHEN THE TIDAL FLOWS ARE HIGH BUT ELECTRICAL POWER
DEMAND LOW, BY OPERATION OF SIMPLE LOAD SENSORS ON THE * TIDAL STREAM TURBINE GENERATOR, TORQUE LOAD OUTPUT CAN * BE SWITCHED TO THE SEAWATER PUMP TO MOVE SEAWATER UP TO THE PUMPED STORAGE RESERVOIR. Corit
WHEN THE TIDAL FLOWS REDUCE IN FLOW SPEED, TO A STAGE THAT
THE SHAFT OUTPUT TORQUE LEVELS REDUCE TO BELOW WORKING
HEAD PRESSURE, THE SENSORS WILL CLOSE THE SEAWATER PIPE CONTROLLING VALVES.
SHOULD THE ELECTRICAL POWER LOAD DEMAND BE HIGH WHEN
* TIDAL FLOW SPEEDS ARE LOW, THEN THE LOAD SENSORS WILL
OPEN THE DIRECTIONAL VALVES LOCATED ON EITHER THE FLOOD
OR EBB SIDE OT THE TIDAL STREAM TURBINE AND THIS WILL DIRECT
STRONG DEFUSED FLOWS OF FAST MOVING SEAWATER FROM THE
* PUMPED STORAGE RESERVOIR INTO THE WORKING AREA OF THE
TIDAL STREAM TURBINES AND THE ELECTRICAL GENERATORS WILL
THEN SENT THE GENERATED POWER TO THE POINT OF
CONSUMPTION. AS THE TIDAL FLOW CYCLE INCREASES, SO THE * CONTROL VALVE SENSORS WILL REDUCE THE PUMPED STORAGE
SEAWATER SUPPLY TO KEEP THE TIDAL TURBINE GENERATOR
OUTPUT AS REQUIRED.
THE LARGE AREAS OF SEAWATER WITHIN THE RESERVOIR WHICH IS
* REGULARLY PUMPED INTO WITH FRESH AERATED AND NUTRIANT * * RICH SEAWATER, WILL, WITH CAREFUL SCREENING AND DISCHARGE * LEVELS ALLOW THE MAIN RESERVOIR TO BE USE FOR FORMS OF AQUACULTURE IN A SAFE ENVIRONMENT.
* MANY AREAS IN THE WORLD THAT COULD OPERATE A TIDAL DRIVEN SEAWATER PUMPED STORAGE SYSTEM AS DESCRIBED, COULD ALSO * USE THE GRAVITATIONAL HEAD PRESSURE FROM THE HIGH * RESERVOIR TO AID PRODUCTION OF FRESHWATER FOR IRRIGATION * OR DRINKING WATER WHEN USED IN CONJUNCTION WITH A * REVERSE OSMOSIS SYSTEM.
ADVANTAGES
(1) AN OPTION TO GENERATE USEFUL ENERGY FROM LOW SPEED
FLUID FLOWS FOUND AT A MUCH WIDER RANGE OF LOCATIONS THAN
* AT PRESENT BEING CONSIDERED WILL BRING THE POSSIBILITY OF LOCALIZED ENERGY GENERATION TO MANY AREAS.
(2) AN OPTION TO BOOST THE TIDAL STREAM TURBINE OR TURBINE ARRAY'S PERFORMANCE TO PEAK OUTPUT AT TIMES OF
HIGH DEMAND WHEN PROVIDING ELECTRICAL POWER DIRECT FROM
THE ARRAY.
(3) AN OPTION TO GREATLY REDUCE THE CARBON FOOTPRINT BY
PROVIDING PUMPED STORAGE BY A RENEWABLE ENERGY SOURCE
(TIDAL ENERGY) RATHER THAN THE PRESENT DAY METHOD OF
USING FRANCIS-TYPE REVERSIBLE TURBINES WHICH CONSUME
GREATER AMOUNTS OF ELECTRICTY TO PUMP UP TO STORAGE
THAN IS PRODUCED IN THE SAME TIME PERIOD AT GENERATION
TIMES FROM THE PUMPED STORAGE SUPPLY.
(4) AN OPTION OF USING A SINGLE MAIN PIPE SYSTEM, REDUCING COSTS AND MAINTENANCE.
* (5) * AN OPTION TO PROVIDE POTABLE DRINKING WATER USING * GRAVITY HEAD BOOSTED SYSTEM TO PROVIDE PART OR ALL OF THE * * PRESSURE REQUIREMENT, THEREFORE REDUCING PUMP CAPACITY NEEDED TO OPERATE A REVERSEOSMOSIS SYSTEM.
(6) AN OPTION TO PROVIDE A LARGE AREA OF HIGHLY AERATED * *. AND NUTRIENT RICH SEAWATER IN A CONTAINED SAFE AREA FOR H AQUA FARMING TO BE UNDERTAKEN.
* (7) AN OPTION TO USE VENTURI DUCTED HALES TYPE TURBINES * IN RUN OF RIVER, ZERO HEAD OPERATIONS TO BOOST PUMPING TO * SIMILAR INLAND FRESHWATER PUMPED STORAGE SYSTEMS.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG 1 A PERSPECTIVE VIEW OF THE PREFERRED EMBODIMENT OF THE INVENTION (WITI-LREDUCED NUMBER OF TIDAL STREAM TURBINE UNITS SHOWN FOR CLARITY).IN A GENERALISED VIEW.
* FIG 2 A SCHEMATIC VIEW OF THE PREFERRED EMBODIMENT WITH INDIVIDUAL FLOW AND RETURN PIPE SYSTEM.
FIG 3 A SCHEMATIC VIEW OF THE PREFERRED EMBODIMENT WITH
SINGULAR FLOW AND RETURN PIPE SYSTEM
FIG 4 A SCHEMATIC VIEW OF THE PREFERRED EMBODIMENT SHOWING
PLAN VIEW OF A TIDAL STREAM TURBINE UNIT WITH SINGULAR FLOW
AND RETURN PIPE SYSTEM LAYOUT.
LIST OF EMBODIMENT PARTS FOR EASIER REFERENCE
1 SEAWATER TIDAL FLOW AREA 2 TIDAL STREAM TURBINE UNIT * 3 TIDAL TURBINE SEAWATER PUMP 4 SEAWATER DELIVERY (OR DELIVER & RETURN) PIPE
SEAWATER PUMPED STORAGE RESERVOIR
6 SEAWATER RETURN PIPE 7 SEAWATER FLOW CONTROL VALVE (PENSTOCK) 8 HIGH HEAD TYPE WATER TURBINE (FRANCIS ETC) 9 ELECTRICAL GENERATOR * 10 SEAWATER DISCHARGE SPILL WAY * 11 ELECTRICAL TRANSMISSION CABLE 12 REVERSE OSMOSIS FILTERATION UNIT * 13 TIDAL STREAM TURBINE ELECTRICAL GENERATOR (ELECTRONIC TORQUE LOAD SENSORS WITHIN * GENERATOR AND UNSEEN) * 14 SEAWATER DISCHARGE CONTROL VALVE (INLET CONTROL VALVE AND TORQUE SENSORS WITH[N PUMP AND UNSEEN)
TIDAL FLOW BOOST CONTROL VALVES
16 TIDAL FLOW BOOST PIPEWORIC * * 17 TIDAL FLOW BOOST DIFFUSER 18 TIDAL STREAM TURBINE ELEC TRANSMISSION CABLE
DESCRIPTION OF THE PREFERRED EMBODIMENT
THE PRESENT INVENTION GENERALLY COMPRISES A POWER
GENERATING AND PUMPED STORAGE SYSTEM TO CONVERT THE
KINETIC ENERGY TAKEN FROM TIDAL STREAM FLOWS INTO
POTENTIAL ENERGY IN THE FORM OF HIGH LEVEL LIQUID STORAGE
TO THEN PROVIDE HIGH KINETIC ENERGY FLUID FLOWS FOR USE
INTO ELECTRICAL POWER, FILTERED FLUID USE OR THE LIKE.
* WITH REGARD TO FIG 2, THE SYSTEM INCLUDES A TIDAL STREAM * TURBINE 2 SINGULARLY OR IN MULTIPLES TO FORM AN ARRAY, * WHICH TAKES ITS PRIMARY KINETIC ENERGY FROM THE TIDAL FLOWS 1. THESE TIDAL STREAM TURBINE UNITS 2 ARE CONNECTED BY SUITABLE SIZED PIPEWORK TO A SEAWATER DELIVER PIPE 4
WHICH AT ITS HIGHEST POINT IS CONNECTED TO OR DISCHARGES
INTO A STORAGE RESERVOIR 5. THIS SEAWATER IS THEN PUMPED FROM THE TIDAL STREAM TURBINE UNITS 2 BY A SEAWATER PUMP 3 CONNECTED TO THE TIDAL STREAM TURBINES OUTPUT SHAFT.
* FURTHER IN FIG2, SEAWATER, REGARDED NOW AS POTENTIAL ENERGY, LOCATED IN THE SEAWATER PUMPED STORAGE RESERVOIR 5 IS DIRECTED THROUGH A SUITABLY SIZED SEAWATER RETURN PIPE 6 UNDER GRAVITATIONAL EFFECT DOWN THROUGH A CONTROLLING SEAWATER FLOW CONTROL VALVE 7 TO PROVIDE
KINETIC FLOW ENERGY TO A SINGLE OR MULTIPLE NUMBERS OF
HIGH HEAD TYPE TURBINES 8 WHICH TURN SINGLE OR MULTIPLE NUMBERS OF ELECTRICAL GENERATORS 9. THESE ELECTRICAL GENERATORS 9 ARE THEN CONNECTED TO AREAS OF POWER CONSUMPTION BYAN ELECTRICAL TRANSMISSION CABLE 11. THE
SEAWATER AFTER OPERATING THE HIGH HEAD TYPE WATER
TURBINES 8 IS ALLOWED TO RETURN TO THE SEA LOCATION * THROUGH A SPILLWAY 10.
* FURTHER IN FIG2, SEAWATER, REGARDED AS POTENTIAL ENERGY, * LOCATED IN SEAWATER PUMPED STORAGE RESERVOIR 5 CAN BE DIVERTED FROM THE SEAWATER RETURN PIPE 6 TO A SINGULAR OR
MULTIPLE NUMBER OF REVERSE OSMOSIS TYPE FRESH WATER
FILTRATION UNITS 12, WHICH HAS THE DISCHARGE DIRECTED TO * *. AREAS OF CONSUMPTION OR STORAGE.
FURTHER IN FIG2, THE SEAWATER PUMPED STORAGE RESERVOIR 5 WILL HAVE FORMS OF OVERFLOW AND FILLING CONTROL, NOT SHOWN, COMMON TO ALL WATER STORAGE SYSTEMS AND KNOWN H IN PRIOR ART. THE SEAWATER PUMPED STORAGE RESERVOIRS * COULD ALSO BE HIDDEN OR ENCLOSED TO COMPLY WITH ENVIRONMENTAL NEEDS. a
* WITH REGARD TO FIG3, WITH THIS ALTERNATIVE SYSTEM TO THAT * SHOWN IN FIG2, THE TIDAL STREAM TURBINE UNITS 2, EITHER * SINGULARLY OR IN MULTIPLES, HAVE BOTH A SEAWATER PUMP 3 * AND AN ENCASED TIDAL TURBINE ELECTRICAL GENERATOR 13 * OPERATING ON THE SAME OUTPUT SHAFT. THE SEAWATER PUMP 3 IS CONNECTED TO A SINGLE SEAWATER DELIVERY PIPE 4 THAT IS * CONNECTED UP TO THE SEAWATER PUMPED STORAGE RESERVOIR 5. AT SEABED LEVEL, THE SEAWATER DELIVERY PIPE 4 WILL HAVE A GROUP OF VALVES, COMMON IN DESIGN TO CONTROL THE DISCHARGE AND DIRECTION OF THE PUMPED SEAWATER.
FURTHER IN FIG3, WHEN THE TIDAL STREAM TURBINE 2 OR MULTIPLE NUMBER OF TIDAL STREAM TURBINES 2 ARE OPERATING * SOLELY AS AN ELECTRICAL GENERATION DEVICE, THE SEAWATER DISCHARGE CONTROL VALVEI4, TOGETHER WITH A SEAWATER * PUMP INLET VALVE (HIDDEN WITHIN THE SEAWATER PUMP AND NOT SHOWN) WILL REMOVE THE LOADING ON THE SEAWATER PUMP 3
AND PREVENT SEAWATER DISCHARGE THROUGH THE SEAWATER
DELIVERY PIPE 4.
* FURTHER IN F103 AND FIG4, AT TIMES WHEN ELECTRICAL POWER * DEMAND IS LOW AND THE TIDAL FLOW SPEEDS HIGH, THE TIDAL STREAM TURBINE UNIT2 OR MULTIPLE UNITS2 WILL BE INFORMED BY * INTERNAL LOAD SENSORS INSTALLED AS PART OF AND WITHIN THE * TIDAL STREAM TURBINE ELECTRICAL GENERATOR 13 AND THE TIDAL TURBINE SEAWATER PUMP 3, WHICH WILL CAUSE THE SEAWATER DISCHARGE CONTROL VALVE 14 AND THE CORESPONDING SEAWATER PUMP 3 INLET VALVE (NOT SHOWN) TO OPEN TO ALLOW SEAWATER TO BE PUMPED UP THE SEAWATER DELIVERY PIPE 4TO * THE SEAWATER PUMPED RESERVOIR 5. AT THIS TIME, THE TIDAL FLOW BOOST CONTROL VALVES 15, (SHOWN IN FIG4) REMAIN SHUT.
* FURTHER IN FIG3 AND FIG4 WHEN THE ELECTRICAL POWER DEMAND IS HIGH BUT THE TIDAL STREAM 1, FLOWS ARE SLOW, THE TIDAL STREAM TURBINE UNIT 2 OR MULTIPLES OF TIDAL TURBINE UNITS 2 WILL SWITCH TO ELECTRICAL GENERATION MODE AGAIN. TO BOOST THE TIDAL STREAM TURBINE UNIT 2 UP TO FULL ELECTRICAL * POWER OUTPUT, ONE OF THE TIDAL FLOW BOOST CONTROL VALVES * * 15, EITHER ON THE FLOOD OR EBB SIDE OF THE TIDAL STREAM * TURBINES 2, DEPENDANT OF THE DIRECTION OF THE TIDAL FLOW 1, * WILL OPEN, OPENING THIS TIDAL FLOW CONTROL VALVE 15 WILL * SEND SEAWATER UNDER HIGH PRESSURE FROM THE SEAWATER PUMPED STORAGE RESERVOIR 5 THROUGH TIDAL FLOW BOOST PIPEWORKI6 TO THE TIDAL FLOW BOOST DIFFUSER 17 ON THE TIDAL * FLOW INCOMING SIDE 1., BRINGING THE TIDAL STREAM TURBINE 2 TO * FULL ELECTRICAL POWER OUTPUT.
WHILE THE TIDAL STREAM TURBINE 2 IS OPERATING UNDER TIDAL FLOW BOOST MODE, THE SEAWATER PUMP 3 DISCHARGE CONTROL VALVES 14 WILL REMAIN SHUT.
FURTHER TO FIG3 AND FIG4, WHILE THE TIDAL STREAM TURBINE H UNITS 2 ARE OPERATING IN THE TIDAL BOOST MODE, THE OPEN TIDAL FLOW BOOST CONTROL VALVE 15 WILL SLOWLY CLOSE,
UNDER CONTROL OF TIDAL FLOW SENSORS NOT SHOWN BUT
COMMON TO INDUSTRY, REDUCING THE DIFFUSED SEAWATER BOOST SUPPLY TO THE TIDAL STREAM TURBINES 2 AS THE TIDAL STREAM 1 INCREASES IN VELOCITY, THEREFORE KEEPING THE TIDAL STREAM TURBINE 2, ELECTRICAL GENERATION AT FULL POWER AT ALL TIMES OF HIGH DEMAND.

Claims (9)

  1. CLAIMS1. A TIDAL STREAM GENERATION SYSTEM THAT UTILIZESPUMPED STORAGE OF SEAWATER TO PROVIDE POTENTIALENERGY CAPACITY THROUGH PRODUCTION OF AGRAVITATIONAL FLUID HEAD FOR A VARIETY OF USES.
  2. 2. A TIDAL STREAM GENERATION SYSTEM AS CLAIMED IN CLAIM 1, WHEREIN TIDAL STREAM TYPE TURBINES, SINGULARLY ORIN MULTIPLES PUMP SEAWATER TO AN AREA OF SEAWATERSTORAGE RESERVOIR OR RESERVOIRS, THROUGH A SEAWATER PUMP AND PIPEWORK SYSTEM.
  3. 3. A TIDAL STREAM GENERATION SYSTEM AS CLAIMED IN CLAIM 1, WHEREIN TIDAL STREAM TYPE TURBINES, SINGULARLY OR IN MULTIPLES, HAVE BOTH A SEAWATERPUMP AND AN ELECTRICAL GENERATOR CONNECTED ON THESAME POWER OUTPUT SHAFT..*
  4. 4. A TIDAL STREAM GENERATION SYSTEM AS CLAIMED IN CLAIM 1, WHEREIN PUMPED STORED SEAWATER AT HEIGHTPROVIDES OPERATING ENERGY FLOWS OF SEAWATER FOR
    ELECTRICAL GENERATION
  5. 5. TIDAL STREAM GENERATION SYSTEM AS CLAIMED IN CLAIM 1, * WHEREIN PUMPED STORAGE SEAWATER AT HEIGHTPROVIDES OPERATING FLUID ENERGY FLOWS FOR* FRESHWATER OR POTABLE WATER PRODUCTION THROUGH A REVERSE OSMOSIS UNIT OR SIMILAR.
  6. 6. TIDAL STREAM GENERATION SYSTEM AS CLAIMED IN CLAIM 1, * WHEREIN PUMPED SEAWATER STORAGE PROVIDESOPERATING ENERGY FLOWS DIRECTLY TO THE TIDALSTREAM TURBINE OR TURBINES THROUGH BOOST CONTROLVALVES AND FLOW DEFUSER SYSTEM.
  7. 7. TIDAL STREAM GENERATION SYSTEM AS CLAIMED IN CLAIM 1,WHEREIN THE PUMPED SEAWATER STORAGE OUTPUTFLOWS TO BOOST THE TIDAL STREAM TURBINE OPERATINGOUTPUT ARE MONITORED AND CONTROLLED BY SENSORS TOBALANCE ELECTRICAL GENERATION OUTPUT TO THEINCREASING OR DECREASING TIDAL STREAM FLOWSH
  8. 8. TIDAL STREAM GENERATION SYSTEM AS CLAIMED IN CLAIM 1,WHEREIN PUMPED SEAWATER STORAGE IN A RESERVOIROR MULTIPLE OF RESERVOIRS ARE USED FOR FORMS OF
    AQUACULTURE FARMING.
  9. 9. TIDAL STREAM GENERATION SYSTEM AS CLAIMED IN CLAIM 1,WHEREIN THE SAME FORMS OF TIDAL STREAM TURBINE AREOPERATED IN SUITABLE RUN OF RIVER, ALSO CALLED ZEROHEAD FLOWS TO OPERATE SIMILAR PUMPED HEADGENERATION SYSTEMS INLAND,
GB1304903.6A 2013-03-16 2013-03-16 Tidal energy powered pumped storage systems Withdrawn GB2512057A (en)

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WO2016066866A1 (en) * 2014-10-31 2016-05-06 Cortes Sanchez Francisco System for producing drinking water and electricity and supplying same to a population centre, using sea water
WO2018191139A1 (en) * 2017-04-10 2018-10-18 Oceanus Power & Water, Llc An integrated system for generating, storing and dispensing clean energy and desalinating water
CN112648131A (en) * 2020-12-25 2021-04-13 深圳前海小清科技有限公司 Tidal transmission power generation system
WO2023240373A1 (en) * 2022-06-17 2023-12-21 RESCAGLIO CAMUS, Carla Self-sustaining hydroelectric plant for generating electrical energy by water pressure difference

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CN116696646B (en) * 2023-05-30 2024-03-01 上海勘测设计研究院有限公司 Combined power station of tidal power station and seawater pumped storage power station and scheduling method thereof

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US20100052327A1 (en) * 2008-08-26 2010-03-04 Moreland Elvis A Tide operated energy system
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US20070029805A1 (en) * 2003-10-22 2007-02-08 Antonio Marchetti Device for deriving energy from moving fluids
US20100158705A1 (en) * 2007-03-14 2010-06-24 Paul Guinard Device and method for collecting the kinetic energy of a naturally moving fluid
US20100052327A1 (en) * 2008-08-26 2010-03-04 Moreland Elvis A Tide operated energy system
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US20120019004A1 (en) * 2010-07-20 2012-01-26 Rod Ekern Renewable Energy System

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016066866A1 (en) * 2014-10-31 2016-05-06 Cortes Sanchez Francisco System for producing drinking water and electricity and supplying same to a population centre, using sea water
WO2018191139A1 (en) * 2017-04-10 2018-10-18 Oceanus Power & Water, Llc An integrated system for generating, storing and dispensing clean energy and desalinating water
US10919788B2 (en) 2017-04-10 2021-02-16 Oceanus Power & Water, Llc Integrated system for generating, storing and dispensing clean energy and desalinating water
CN112648131A (en) * 2020-12-25 2021-04-13 深圳前海小清科技有限公司 Tidal transmission power generation system
WO2023240373A1 (en) * 2022-06-17 2023-12-21 RESCAGLIO CAMUS, Carla Self-sustaining hydroelectric plant for generating electrical energy by water pressure difference

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