WO2023008261A1 - 発電設備及び発電方法 - Google Patents
発電設備及び発電方法 Download PDFInfo
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- WO2023008261A1 WO2023008261A1 PCT/JP2022/028082 JP2022028082W WO2023008261A1 WO 2023008261 A1 WO2023008261 A1 WO 2023008261A1 JP 2022028082 W JP2022028082 W JP 2022028082W WO 2023008261 A1 WO2023008261 A1 WO 2023008261A1
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- Prior art keywords
- power
- power generation
- floating body
- module
- wave
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
- B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
- B63B2035/4433—Floating structures carrying electric power plants
- B63B2035/4466—Floating structures carrying electric power plants for converting water energy into electric energy, e.g. from tidal flows, waves or currents
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- 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
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- 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
- F05B2240/00—Components
- F05B2240/90—Mounting on supporting structures or systems
- F05B2240/93—Mounting on supporting structures or systems on a structure floating on a liquid surface
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- 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
- F05B2260/00—Function
- F05B2260/40—Transmission of power
- F05B2260/406—Transmission of power through hydraulic systems
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- 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
Definitions
- This disclosure relates to power generation facilities and power generation methods that generate power using tidal currents.
- Patent Literature 1 discloses a hull equipped with photovoltaic power generation equipment, wind power generation equipment, wave power generation equipment, and tidal power generation equipment.
- Patent Document 1 a power conversion device that converts wave energy and tidal energy into power is provided. It is not preferable because it causes energy loss in the generator. Assuming that the number of power converters will increase as power generation equipment becomes larger or scales up, it is necessary to consider an installation form that has a wide range of applications. In particular, unlike the hull that can navigate by itself, such as Patent Document 1, when installing power converters on a floating body moored in the ocean, it is preferable to be able to flexibly cope with an increase or decrease in the number of installations.
- the present disclosure has been made in view of such circumstances, and provides a power generation facility and a power generation method that can efficiently increase the number of power conversion devices that convert tidal power and / or wave power into power and maintenance work. intended to provide
- a power generation facility includes a floating body that is moored and floats on a water surface, a plurality of power conversion modules that are provided on the floating body and convert tidal currents and/or wave power into power, and , a common power generation module that converts the motive power led from each power conversion module into electric power, and a power transmission module that transmits the power generated by the power generation module to the outside.
- a power generation method includes a step of converting tidal currents and/or wave power into power by a plurality of power conversion modules provided on a floating body that is moored and floating on the water surface; It includes a step of converting the motive power introduced from the power conversion module into electric power, and a step of transmitting the electric power generated by the power generation module to the outside by a power transmission module.
- FIG. 1 is a schematic configuration diagram showing power generation equipment according to a first embodiment of the present disclosure
- FIG. FIG. 2 is a schematic configuration diagram showing a hydraulic circuit of the tidal current power generation facility of FIG. 1
- FIG. 3 is a schematic configuration diagram showing a modification of FIG. 2
- FIG. 2 is a schematic configuration diagram showing an air flow of the wave power generation facility of FIG. 1
- FIG. 5 is a schematic configuration diagram showing a modification of FIG. 4
- FIG. 3 is a plan view showing a state in which a plurality of floating bodies are arranged; It is the bottom view which showed the power generation equipment which concerns on 2nd Embodiment.
- FIG. 8 is a longitudinal sectional view showing a schematic configuration of the power generation equipment of FIG. 7;
- FIG. 8 is a longitudinal sectional view showing a schematic configuration of the power generation equipment of FIG. 7;
- FIG. 8 is a bottom view showing a state in which a plurality of floating bodies of FIG. 7 are arranged;
- FIG. 8 is a bottom view of the floating body of FIG. 7;
- 10B is a side view of FIG. 10A;
- FIG. FIG. 4 is a bottom view showing a state in which the floating body is moored with mooring cables having expansion devices.
- FIG. 1 shows a power generation facility 1 according to the first embodiment.
- the power generation facility 1 includes a floating body 3 , a tidal power generation facility 5 , a wave power generation facility 7 , and a solar power generation device 9 .
- the floating body 3 has a hollow box shape, for example, a rectangular parallelepiped, and floats on the sea surface WS.
- the floating body 3 is moored to a fixed point in the sea (not shown) by a mooring cable 11 .
- the tidal power generation facility 5 includes a tidal turbine 13 .
- the tidal current turbine 13 is rotated by the tidal current TS.
- the rotational force of the tidal current turbine 13 is transmitted from the horizontally extending first shaft 15 to the vertically extending second shaft 17 .
- two bevel gears 16 are provided between the first shaft 15 and the second shaft 17 .
- the method is not limited to bevel gears as long as the horizontal rotational force generated by the tidal current turbine 13 can be converted into vertical rotational force.
- the second shaft 17 is provided so as to pass through the floating body 3 .
- a hydraulic pump 19 is connected to the second shaft 17 .
- the hydraulic pump 19 is provided above the floating body 3, that is, above the sea surface WS. This facilitates access to the hydraulic pump 19 and facilitates maintenance.
- the hydraulic pump 19 is driven by the rotational force transmitted from the second shaft 17, and the working fluid (working oil) is pressurized to a pressure equal to or higher than a predetermined pressure. Thereby, the tidal current TS is converted into power (hydraulic pressure). Hydraulic oil pressurized by the hydraulic pump 19 is guided to the hydraulic motor 23 through the hydraulic piping 21 .
- the tidal current TS reverses (commutates) the flow direction several times a day.
- a hydraulic circuit 25 is provided as shown in FIG. 2 so that the hydraulic fluid guided to the hydraulic motor 23 flows in one direction even if the tidal current TS is commutated.
- solid-line arrows indicate the rotation and flow direction of each part when the tidal current turbine 13 rotates forward
- broken-line arrows indicate the rotation and flow direction of the tidal current turbine 13 when the tidal current turbine 13 rotates in the reverse direction.
- a rotary positive displacement pump such as a gear pump or a screw pump is used as the hydraulic pump 19 .
- the hydraulic circuit 25 has a diamond-shaped hydraulic bridge circuit 25b, and a check valve 25a is provided on each of the four sides of the hydraulic bridge circuit 25b.
- a check valve 25a is provided on each of the four sides of the hydraulic bridge circuit 25b.
- the wave power generation facility 7 includes a wave turbine 33.
- the wave turbine 33 is rotated by air discharged from the space S1 and sucked into the space S1.
- the space S ⁇ b>1 is formed by an outer shell 35 provided on the side of the floating body 3 .
- the outer shell 35 is formed such that its upper portion is fixed to the upper portion of the floating body 3 and its lower portion is submerged in water.
- the lower part of the outer shell 35 is open so that seawater can enter.
- An opening 35a is formed in the upper portion of the outer shell 35, and air enters and exits the space S1 through the opening 35a.
- the rotational force of the wave turbine 33 is transmitted to the horizontally extending third shaft 37 to drive the hydraulic pump 38 .
- This converts the wave force into power (hydraulic pressure).
- Hydraulic oil pressurized by the hydraulic pump 38 is guided to the hydraulic motor 23 through the hydraulic piping 39 .
- the wave turbine 33 and the hydraulic pump 38 are provided on both sides of the floating body 3, respectively.
- the wave power turbine 33, the hydraulic pump 38, and the like constitute a power conversion module M1 that converts wave power into hydraulic pressure.
- Each hydraulic pipe 39 of the wave turbine 33 merges with the hydraulic pipe 21 of the tidal current turbine 13 and is led to a common hydraulic motor 23. That is, the hydraulic fluid pressurized by the plurality of power conversion modules M1 is collected and led to the common hydraulic motor 23 .
- the volume occupied by the air in the space S1 fluctuates according to the period of the waves, and accordingly the direction of the air entering and exiting the opening 35a is reversed. Therefore, the configuration as shown in FIG. 4 is adopted.
- a solid-line arrow indicates when the sea surface WS rises in the space S1
- a broken-line arrow indicates when the sea surface WS descends.
- the wave turbine 33 on the right side in FIG. 4 rotates when the sea surface WS rises and the air in the space S1 is discharged. Specifically, the air discharged from the opening 35a passes through the check valve 40, rotates the wave turbine 33, and is then discharged to the outside. Rotational force of the wave turbine 33 is transmitted to the hydraulic pump 38 via the third shaft 37 . When the sea surface WS descends, the check valve 40 prevents the air from flowing to the wave turbine 33, so that the sea surface WS does not reverse.
- the wave turbine 33 on the left side in FIG. 4 rotates when the sea surface WS descends and sucks air into the space S1. Specifically, the outside air flows through the check valve 40 to the wave turbine 33 by sucking air from the opening 35a. This causes the wave turbine 33 to rotate, and the rotational force of the wave turbine 33 is transmitted to the hydraulic pump 38 via the third shaft 37 .
- the check valve 40 prevents air from flowing to the wave turbine 33, so the reverse rotation does not occur.
- hydraulic pressure is generated by one of the wave turbines 33 each time the sea surface WS rises and falls.
- a configuration using one wave turbine 33 is also possible.
- a plurality of check valves 42 are used to provide a discharge air path 44a flowing in the discharge direction and a suction air path 44b flowing in the suction direction.
- a common air path 44c is used for both the discharge air path 44a and the suction air path 44b.
- a generator 24 is connected to the hydraulic motor 23 as shown in FIG.
- the hydraulic motor 23 is rotationally driven by the hydraulic pressure of hydraulic oil supplied from the power conversion module M1, and the rotational force of the hydraulic motor 23 rotationally drives the generator 24 to generate power.
- the hydraulic motor 23 and the generator 24 constitute a power generation module M2.
- the power generated by the generator 24 is sent to the power transmission facility 26 and transmitted to the outside via the power transmission line 26a.
- the power transmission facility 26 constitutes a power transmission module M3.
- the power generation module M2 and the power transmission module M3 are integrated.
- the power generation module M2 and the power transmission module M3 may be provided separately.
- the power conversion module M1, power generation module M2, and power transmission module M3 are monitored and controlled by a control unit (not shown).
- the control unit is composed of, for example, a CPU (Central Processing Unit), a RAM (Random Access Memory), a ROM (Read Only Memory), a computer-readable storage medium, and a wired or wireless communication device.
- a series of processes for realizing various functions is stored in a storage medium or the like in the form of a program, for example, and the CPU reads out this program to a RAM or the like, and executes information processing and arithmetic processing. As a result, various functions are realized.
- the program may be pre-installed in a ROM or other storage medium, provided in a state stored in a computer-readable storage medium, or delivered via wired or wireless communication means. may be applied.
- Computer-readable storage media include magnetic disks, magneto-optical disks, CD-ROMs, DVD-ROMs, semiconductor memories, and the like.
- FIG. 6 shows a state in which a plurality of floating bodies 3 are arranged.
- a plurality of floating bodies 3 are arranged vertically and horizontally in plan view.
- One floating body 3 is provided with a power generation module M2 and a power transmission module M3 (power generation floating body 3A).
- a plurality of other floating bodies 3 are provided with power conversion modules M1 (power conversion floating bodies 3B).
- the power conversion module M1 is not provided in the power generation floating body 3A.
- the power conversion floating body 3B is not provided with the power generation module M2 and the power transmission module M3. Therefore, in the configuration shown in FIG. 6, a power generation floating body 3A having common power generation modules M2 and power transmission modules M3 mounted thereon is provided for a plurality of power conversion floating bodies 3B.
- Each floating body 3 is connected to each other so that it can be disconnected. Thereby, each floating body 3 can be separated from the other floating bodies 3 .
- a solar power generation device 9 is provided on the upper portion of the floating body 3.
- the solar power generation device 9 has a solar cell panel 9a, and a space for installing hydraulic pumps 19, 38 and the like is formed between the solar cell panel 9a and the floating body 3.
- Electric power generated by the photovoltaic power generation device 9 is sent to the power transmission facility 26 .
- the power output and the like of the photovoltaic power generation device 9 are controlled by a control unit (not shown).
- the effects of the present embodiment described above are as follows. Since the functions of power conversion, power generation and power transmission are divided into the modules M1, M2 and M3, the power conversion module M1, the power generation module M2 and the power transmission module M3 can be arranged separately. This increases the degree of freedom in combining the modules M1, M2, and M3, and the modules M1, M2, and M3 are arranged according to the installation situation when the power generation facility 1 is enlarged by increasing the number of floating bodies 3. can do.
- the hydraulic motor 23 and the generator 24 can be increased in capacity, the loss at the time of power conversion can be reduced, and the power generation efficiency can be increased.
- the number of installed power generation modules M2 can be reduced, and the cost for introduction and maintenance can be reduced.
- a plurality of power generation modules M2 and power transmission modules M3 can be installed. Since the floating body 3 has a large occupied space and is not equipped with a wind power generator that increases the installation cost, the utilization efficiency of the installation space (the amount of power generated per unit space) is high, and the installation cost can be reduced.
- a solar power generation device 9 is provided for the floating body 3.
- power can be generated by sunlight in addition to tidal currents and wave power, and the capacity of the power generation equipment 1 can be increased. It is possible to maintain a high facility utilization rate because power generation can be expected from either natural energy regardless of day or night, weather, or season.
- tidal currents can be predicted with high accuracy over the long term, making it easier to predict power generation and formulate maintenance plans.
- a plurality of power conversion floating bodies 3B each having only the power conversion module M1 provided on the floating body 3 are provided, and power is supplied from each power conversion floating body 3B to the power generation floating body 3A provided with the common power generation module M2 to generate power. .
- a plurality of common power generation floating bodies 3A can also be provided, and are configured in consideration of the facility scale, reliability, and maintenance plan.
- Each floating body 3 can be disconnected from another floating body 3. As a result, power generation as the power generation equipment 1 can be continued after only the specific floating body 3 is disconnected during maintenance or the like.
- FIG. 7 shows the floating body 3' in plan view.
- the floating body 3' has floating body parts 50 on both sides. That is, the floating body 3' is of a catamaran type.
- Each floating body part 50 has a box shape with a space inside, and is provided along the longitudinal direction.
- a plurality of partition walls 52 are provided between the left and right floating body portions 50 in the figure.
- Each partition 52 is a plate-like body and extends so as to connect the left and right floating body portions 50 .
- Each partition wall 52 is provided at substantially constant intervals in the longitudinal direction at predetermined intervals.
- a space S1 is formed by the left and right floating body parts 50 and the partition walls 52 adjacent in the longitudinal direction.
- the space S1 is used to drive the wave turbine 33 as described in the first embodiment. Therefore, a wave turbine 33 can be provided in each space S1.
- the wave turbines 33 are shown only for two spaces S1 in FIG. 7, the wave turbines 33 may be provided for all the spaces S1.
- the wave turbine 33 is provided within the space S1.
- the air in the space S1 enters and leaves the outside through the opening 35a.
- a plurality of tidal current turbines 13 are provided for each floating body portion 50 so that the second shaft 17 penetrates through the floating body portion 50 .
- the number of tidal current turbines 13 is arbitrary and is appropriately set according to the amount of power generation required.
- a plurality of floating bodies 3' shown in FIG. 7 can be connected and arranged.
- the floating bodies 3' may be arranged in the horizontal direction (width direction), or the floating bodies may be arranged in the vertical direction (longitudinal direction) or the vertical and horizontal directions.
- a keel (rudder) 54 may be provided at the bottom of each floating body section 50 so as to protrude downward.
- the tidal current turbine 13 and the wave turbine 33 are omitted in FIGS. 10A and 10B.
- the keel 54 allows the attitude of the floating body 3' to be adjusted so that the tidal current turbine 13 faces the direction of the tidal current TS.
- the mooring ropes 11 are used to support the four corners of the floating body 3′ in plan view, and the mooring ropes 11 are supported by reels (expansion devices) 56 provided at the respective mooring points on the floating body 3′. You can stretch it.
- the posture of the floating body 3' can be appropriately set according to the direction of the tidal current TS. In this case, compared with the case of using the keel 54, the movement of the floating body 3' can be kept within a narrow range.
- a catamaran type floating body is formed by providing floating body portions 50 along the longitudinal direction on both sides of the floating body 3'.
- a plurality of partition walls 52 extending between the floating body portions 50 are provided in the longitudinal direction.
- a plurality of spaces S1 in which the volume of the gas phase changes according to changes in waves are formed in the area surrounded by the floating body portion 50 and the partition walls 52 on both sides. Since power can be obtained from wave power using a plurality of spaces S1, greater energy can be recovered from wave power.
- the attitude of the floating body 3' can be appropriately controlled according to the direction of the tidal current TS.
- hydraulic pressure has been described as an example of power converted by tidal power and wave power, but the power to be converted is not limited to hydraulic pressure, and other power to be converted, such as air pressure, may be used.
- a power generation facility includes a floating body that is moored and floats on a water surface, a plurality of power conversion modules that are provided on the floating body and convert tidal currents and/or wave power into power, and each of the power conversion modules a common power generation module that converts the motive power led from the power generation module into power; and a power transmission module that transmits the power generated by the power generation module to the outside.
- each function such as power conversion, power generation and power transmission is separated for each module
- the power conversion module, power generation module and power transmission module can be arranged separately.
- the degree of freedom in combination of each module increases, and each module can be arranged according to the installation situation, for example, when increasing the number of floating bodies to increase the scale of the power generation facility.
- the motive power generated by a plurality of power conversion modules is led to a common power generation module, compared to the case where each power conversion module is provided with a power generation module corresponding one-to-one to generate power, the loss during power conversion is reduced. less, and the power generation efficiency can be increased.
- the number of installed power generation modules can be reduced, and the cost for introduction and maintenance can be reduced.
- the power conversion module has a function of converting power obtained from, for example, tidal currents or wave power into hydraulic pressure. It is preferable that the floating body is not equipped with a wind power generator that increases the installation cost.
- the floating body includes a photovoltaic power generation device.
- a plurality of power conversion floating bodies are provided, and power is supplied from each power conversion floating body to a common power generation floating body to generate power. As a result, it is possible to easily cope with the scale-up of power generation facilities by increasing the number of power conversion floating bodies.
- a plurality of power generation floating bodies may be provided.
- the power generation floating body may be used as a power generation and transmission floating body by providing a power transmission module.
- the power conversion floating body and the power generation floating body are connected so as to be able to be disconnected from the other floating body.
- the floating body includes floating body portions provided along the longitudinal direction on both sides, and a plurality of partition walls extending between the floating body portions and provided in the longitudinal direction. and obtaining power from wave force using a plurality of spaces surrounded by each of the floating body portions and each of the bulkheads.
- a catamaran type floating body is formed by providing a floating body part along the longitudinal direction on each side.
- a plurality of partition walls extending between the floating body portions are provided in the longitudinal direction.
- a plurality of spaces whose volumes change according to changes in waves are formed in the areas surrounded by the floating bodies on both sides and the partition walls. Because multiple spaces can be used to derive power from the wave force, more energy can be recovered from the wave force.
- the floating body includes a keel.
- a power generation facility includes a mooring cable for mooring the floating body, an expansion/contraction device for expanding and contracting the mooring cable, and a control unit for controlling the expansion/contraction device in accordance with tidal currents.
- a power generation method includes a step of converting tidal currents and/or wave power into power by a plurality of power conversion modules provided on a floating body that is moored and floating on the water surface; It has a step of converting the motive power led from the power conversion module into electric power, and a step of transmitting the electric power generated by the power generation module to the outside by a power transmission module.
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Abstract
Description
発電設備の大型化あるいは規模拡大等に伴い、動力変換装置が増台することを想定して、適用範囲が広い設置形態を検討する必要がある。特に、特許文献1のような自ら航行できる船体と異なり、海洋に係留された浮体に対して動力変換装置を設置する場合には、設置台数の増減に柔軟に対応できることが好ましい。
[第1実施形態]
以下、本開示の第1実施形態について説明する。
図1には、第1実施形態に係る発電設備1が示されている。発電設備1は、浮体3と、潮流発電設備5と、波力発電設備7と、太陽光発電装置9とを備えている。
潮流タービン13、油圧ポンプ19及び油圧回路25等によって、潮流を油圧に変換する動力変換モジュールM1が構成される。
以上のように、海面WSが上昇および下降するときのそれぞれについて、いずれかの波力タービン33によって油圧が生成されることになる。
したがって、図6に示した構成では、複数の動力変換用浮体3Bに対して、共通の発電モジュールM2及び送電モジュールM3を搭載した発電用浮体3Aが設けられている。
動力変換、発電および送電といった各機能をモジュールM1,M2,M3ごとに分けているので、動力変換モジュールM1と発電モジュールM2と送電モジュールM3をそれぞれ分けて配置することができる。これにより、各モジュールM1,M2,M3の組み合わせの自由度が大きくなり、浮体3を増やして発電設備1を大規模化する場合などに、設置状況に応じて各モジュールM1,M2,M3を配置することができる。
複数の動力変換モジュールM1で発生した動力を共通の発電モジュールM2に導くこととしたので、各動力変換モジュールM1に1対1で対応する発電モジュールM2を設けて発電する場合に比べて、油圧モータ23及び発電機24を大容量化できることから、電力変換時の損失が少なくなり、発電効率を大きくすることができる。発電モジュールM2の設置数が減り、導入及び保守に掛かるコストを低減できる。ただし、発電モジュールM2及び送電モジュールM3の保守時の設備運転を考慮し、発電モジュールM2及び送電モジュールM3は複数設置することもできる。
浮体3は、専有空間が大きく、且つ、設置コストが嵩む風力発電装置を備えていないので、設置空間の利用効率(単位空間当たりの発電量)が高く、設置コストを低減することができる。
次に、本開示の第2実施形態について説明する。本実施形態は、浮体3の構造が第1実施形態と異なり、その他の構成は同様である。したがって、以下の説明では相違点を中心に説明し、共通する構成については同一符号を付しその説明を省略する。
浮体3’両側のそれぞれに長手方向に沿って浮体部50を設けることによって双胴式の浮体とする。そして、浮体部50の間に延在する隔壁52を、長手方向に複数設けることとした。両側の浮体部50と各隔壁52で囲まれた領域には、波の変化に応じて気相の体積が変化する複数の空間S1が形成される。複数の空間S1を用いて波力から動力を得ることができるので、より大きなエネルギーを波力から回収することができる。
複数の動力変換モジュールで発生した動力を共通の発電モジュールに導くこととしたので、各動力変換モジュールに1対1で対応する発電モジュールを設けて発電する場合に比べて、電力変換時の損失が少なくなり、発電効率を大きくすることができる。発電モジュールの設置数が減り、導入及び保守に掛かるコストを低減できる。
動力変換モジュールは、例えば、潮流または波力で得られた動力を油圧に変換する機能を有している。
浮体は、設置コストが嵩む風力発電装置は備えていないことが好ましい。
発電用浮体を複数としても良い。発電用浮体に送電モジュールを設けて発電送電用浮体としても良い。
3,3’ 浮体
3A 発電用浮体
3B 動力変換用浮体
5 潮流発電設備
7 波力発電設備
9 太陽光発電装置
9a 太陽電池パネル
11 係留索
13 潮流タービン
15 第1軸
16 かさ歯車
17 第2軸
19 油圧ポンプ
21 油圧配管
23 油圧モータ
24 発電機
25 油圧回路
25a 逆止弁
25b 油圧ブリッジ回路
26 送電設備
27 クランク機構
28 シリンダ
29 ピストン
30a 往路
30b 復路
31 逆止弁
33 波力タービン
35 外殻
35a 開口
37 第3軸
38 油圧ポンプ
39 油圧配管
40 逆止弁
42 逆止弁
44a 吐出空気経路
44b 吸引空気経路
44c 共通空気経路
50 浮体部
52 隔壁
54 キール(舵)
56 リール(伸縮装置)
M1 動力変換モジュール
M2 発電モジュール
M3 送電モジュール
S1 空間
TS 潮流
WS 海面
Claims (8)
- 係留されて水面上に浮かぶ浮体と、
前記浮体に設けられ、潮流及び/又は波力を動力に変換する複数の動力変換モジュールと、
各前記動力変換モジュールから導かれた動力を電力に変換する共通の発電モジュールと、
前記発電モジュールで発電した電力を外部へ送電する送電モジュールと、
を備えている発電設備。 - 前記浮体は、太陽光発電装置を備えている請求項1に記載の発電設備。
- 前記動力変換モジュールが前記浮体に設けられた複数の動力変換用浮体と、
前記動力変換モジュールで発生した動力が各前記動力変換用浮体から導かれ、前記発電モジュールが前記浮体に設けられた発電用浮体と、
を備えている請求項1又は2に記載の発電設備。 - 前記動力変換用浮体及び前記発電用浮体は、他の前記浮体から解列可能に接続されている請求項3に記載の発電設備。
- 前記浮体は、両側のそれぞれに長手方向に沿って設けられた浮体部と、これら浮体部の間に延在し、前記長手方向に複数設けられた隔壁とを備え、
各前記浮体部と各前記隔壁で囲まれた複数の空間を用いて波力から動力を得る請求項1から4のいずれかに記載の発電設備。 - 前記浮体は、キールを備えている請求項1から5のいずれかに記載の発電設備。
- 前記浮体を係留する係留索と、
前記係留索を伸縮させる伸縮装置と、
潮流に応じて前記伸縮装置を制御する制御部と、
を備えている請求項1から6のいずれかに記載の発電設備。 - 係留されて水面上に浮かぶ浮体に設けられた複数の動力変換モジュールによって潮流及び/又は波力を動力に変換する工程と、
共通の発電モジュールによって各前記動力変換モジュールから導かれた動力を電力に変換する工程と、
送電モジュールによって前記発電モジュールで発電した電力を外部へ送電する工程と、
を有する発電方法。
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|---|---|---|---|---|
| JPH0835479A (ja) * | 1994-07-26 | 1996-02-06 | Norimi Sumizaki | 浮力防波堤を兼ねた波潮力発電 |
| JP2011021559A (ja) * | 2009-07-16 | 2011-02-03 | Yamato Dengyosha:Kk | エネルギー変換装置及びそれを利用した発電装置 |
| JP3169982U (ja) * | 2011-06-16 | 2011-08-25 | 琢 横山 | 発電船 |
| JP2014202175A (ja) * | 2013-04-09 | 2014-10-27 | 東陽設計工業株式会社 | 波力発電用タービンならびにその組立方法および運転方法 |
| JP2016205360A (ja) * | 2015-04-21 | 2016-12-08 | 株式会社サンエイ | 海底水域への酸素補給装置 |
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|---|---|---|---|---|
| JPH01142273A (ja) * | 1987-11-27 | 1989-06-05 | Kaiyo Kagaku Gijutsu Center | 浮遊式消波型波力発電装置 |
| JP3169982B2 (ja) * | 1991-05-14 | 2001-05-28 | アイコム株式会社 | 無線受信機 |
| NZ577070A (en) * | 2006-10-20 | 2012-05-25 | Maritime Technologies Ltd | A floatable wave energy converter and a method for improving the efficiency of a floatable wave energy converter |
| JP2017044099A (ja) * | 2015-08-25 | 2017-03-02 | 株式会社日立製作所 | 発電システム |
| JP6787094B2 (ja) * | 2016-12-07 | 2020-11-18 | 株式会社Ihi | 水中浮遊式発電装置 |
-
2021
- 2021-07-29 JP JP2021124143A patent/JP2023019429A/ja active Pending
-
2022
- 2022-07-19 WO PCT/JP2022/028082 patent/WO2023008261A1/ja not_active Ceased
- 2022-07-19 GB GB2401022.5A patent/GB2623913B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0835479A (ja) * | 1994-07-26 | 1996-02-06 | Norimi Sumizaki | 浮力防波堤を兼ねた波潮力発電 |
| JP2011021559A (ja) * | 2009-07-16 | 2011-02-03 | Yamato Dengyosha:Kk | エネルギー変換装置及びそれを利用した発電装置 |
| JP3169982U (ja) * | 2011-06-16 | 2011-08-25 | 琢 横山 | 発電船 |
| JP2014202175A (ja) * | 2013-04-09 | 2014-10-27 | 東陽設計工業株式会社 | 波力発電用タービンならびにその組立方法および運転方法 |
| JP2016205360A (ja) * | 2015-04-21 | 2016-12-08 | 株式会社サンエイ | 海底水域への酸素補給装置 |
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| GB2623913A (en) | 2024-05-01 |
| GB2623913B (en) | 2025-07-16 |
| JP2023019429A (ja) | 2023-02-09 |
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