A method for transferring an energy storage medium between a power generation float and a transport ship in an offshore power generation system.

Abstract

In an offshore wind power generation system, the transfer of the energy storage medium 3a generated by the power generation floating body 10 from the power generation floating body to the transport ships 20 and 30 is achieved without using transfer machinery or equipment such as cranes. [Solution] A method for transferring a storage medium, which stores energy obtained from power generation generated by a floating power generator operating offshore, to a transport ship at sea includes: a first step of fixing the floating power generator to the transport ship such that the height of the storage medium loading area 11 on the floating power generator is higher than the height of the storage medium storage areas 21a and 31a on the transport ship; a second step of forming a first path 12 to which the storage medium can move between the storage medium loading area on the floating power generator and the storage medium storage area on the transport ship; and a third step of moving the storage medium from the loading area on the floating power generator to the storage area on the transport ship by gravity through the first path.

Description

Technical Field

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[0001] The present invention relates to a method for transferring a storage medium for energy obtained from a floating body (power generation floating body) such as a ship equipped with an offshore generator in an offshore power generation system between an offshore transport ship and the power generation floating body at sea.

Background Art

[0002] As one of the methods for obtaining renewable energy, offshore wind power generation has attracted attention. Offshore, there are few restrictions on land and roads, and it is expected that the wind will blow stably in the same direction and with the same intensity, and the advantage of wind power generation that can generate electricity stably even at night will be advantageously utilized. For this reason, various technologies related to offshore wind power generation have been proposed. For example, in Patent Document 1, in an offshore energy collection system including a plurality of floating power generation devices and a platform separated from these plurality of floating power generation devices, the floating power generation device includes a microwave power transmission unit that transmits the generated power in a floating state at sea by microwave, the platform includes a microwave power reception unit that receives the microwaves transmitted from the microwave power transmission unit of the floating power generation device, the microwave power transmission unit and the microwave power reception unit have an array antenna in which a plurality of element antennas are arranged, the microwave power transmission unit transmits the generated power to the microwave power reception unit in a retro-directive operation, and the microwave power reception unit receives coherent microwaves having the same frequency and phase from a plurality of floating power generation devices. Such a configuration has been proposed.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0004] Offshore power generation systems utilizing wind and tidal energy include bottom-fixed systems (systems that fix the generator to the seabed) which are installed in shallow waters relatively close to land, and floating systems (systems that use moored floating bodies with generators installed, or mobile floating bodies with generators installed) which can be deployed in deeper waters. Of these systems, floating systems have the advantage of being able to utilize waters with strong winds and tidal forces as appropriate, thereby enabling efficient energy recovery. However, regarding the delivery of energy generated from offshore power generation to the point of consumption, with floating systems, if the target area is shallow with a depth of 200m or less and the distance from the shore is 50km or less, it is possible to lay power transmission cables from the system to the land. However, if the water depth is greater than this or the distance from the shore is greater, it is difficult to install cables from a cost perspective, and it may also be difficult to transmit power by microwave as described in Patent Document 1 (the transmission distance may be too long). Therefore, in sea areas where cable laying or microwave transmission is difficult, it is conceivable that the electrical energy generated by the power-generating floating structure could be used to charge batteries, or the electrical energy could be converted into the chemical energy contained in the hydrogen gas produced through a water splitting reaction induced by that energy. This hydrogen gas, or liquid hydrogen obtained by liquefying it, could then be stored in tanks. The energy could be stored in storage media (batteries, hydrogen tanks) loaded onto the power-generating floating structure, and a transport ship could be sent to the floating structure as needed to transfer the energy-stored media from the floating structure to the transport ship, and then the media to be stored from the transport ship to the floating structure. This method has the advantage of allowing the storage media to be recovered without moving the power-generating floating structure far from the offshore power generation site, thus allowing for longer power generation times on the floating structure.

[0005] When transferring a medium between a power generation float and a transport ship at sea as described above, the use of transfer machinery and equipment such as cranes (see, for example, Patent Document 2) can be difficult, especially when the waves are high, as the power generation float and the transport ship sway independently at sea, making it difficult to determine the crane's position when receiving the load. Furthermore, when attaching a rope to the storage medium to a suspension hook of a crane laid on the deck of the transport ship, attaching and detaching the rope and controlling the crane usually requires manned work on deck. Even when using a hydraulic hand on the crane to grasp the storage medium instead of a hook, there are problems such as difficulty in positioning the hydraulic hand, the possibility of the storage medium slipping or falling from the hydraulic hand, and other issues when the power generation float and transport ship sway at sea.

[0006] In light of the above circumstances, the main objective of the present invention is to achieve the transfer of the energy storage medium generated by the power generation floating body from the power generation floating body to the transport ship in an offshore power generation system without using transfer machinery or equipment such as cranes. [Means for solving the problem]

[0007] According to the present invention, the above problem is solved by a method for transferring a storage medium loaded onto a power generation floating structure that generates electricity at sea, and which stores the energy obtained from the power generation, to a transport ship at sea. A first step of fixing the power generation float to the transport ship such that the height of the storage medium loading area on the power generation float is higher than the height of the storage medium storage area on the transport ship, A second step is to form a first path through which the storage medium can move between the loading location of the storage medium on the power-generating floating body and the storage location of the storage medium on the transport ship, A third process involves moving the storage medium by gravity through the first path from the loading location of the power generation float to the storage location of the transport ship, and This is achieved by a method that includes [a specific method].

[0008] In the above configuration, the "power generation float" may typically be an offshore float equipped with any type of wind power generation system, which may be a kite-type power generation system, or any other power generation system that operates offshore. The "storage medium" is loaded onto the power generation float and stores the energy obtained from power generation in any form. Specifically, the "storage medium" may be a battery that directly charges electrical energy, or it may be a tank that stores hydrogen gas produced by a water splitting reaction using the electrical energy obtained from power generation, or liquid hydrogen obtained by liquefying it. On the power generation float, multiple storage mediums are loaded at appropriately configured loading locations, and during power generation, the power generation system mounted on the power generation float may be configured to sequentially charge the batteries, which are the storage mediums, with the generated electricity, or to sequentially store the hydrogen gas or liquefied hydrogen produced using the power generation energy into the tanks, which are the storage mediums.

[0009] According to the above configuration, in the first step, the power generation float is fixed to the transport ship such that the height of the storage medium loading area on the power generation float is higher than the height of the storage medium storage area on the transport ship; in the second step, a first path is formed between the storage medium loading area on the power generation float and the storage medium storage area on the transport ship, allowing the storage medium to move; and in the third step, the storage medium is moved from the loading area on the power generation float to the storage area on the transport ship by gravity through the first path. Therefore, the transfer of the storage medium from the power generation float to the transport ship can be achieved without using transport machinery such as cranes, and the movement of the storage medium can be achieved unmanned or automatically because it is due to gravity.

[0010] In the above configuration, the fixing of the power-generating float to the transport ship may be carried out in any manner. For example, if the transport ship is a monohull structure, a magnet may be provided at the part of the transport ship's edge where the edge of the power-generating float abuts, and the power-generating float may be fixed to the transport ship by its magnetic force. Alternatively, if the transport ship is a catamaran structure, the power-generating float may be inserted between the two hulls, and an elastic body may be provided at the part of the opposing outer edges of the two hulls where the edges of the power-generating float abut, and the power-generating float may be fixed to the transport ship by its elastic force.

[0011] In the above configuration, during the power generation of the floating power generation body and during the storage of energy in the storage medium, a stopper member is provided at the storage medium loading location to hold the storage medium in place so that it does not fall from the floating power generation body. This stopper member may be configured to displace in the second process to form at least a portion of the first path for the movement of the storage medium. This allows the stopper member, which is used to prevent the storage medium from falling, to be repurposed to form a path for the movement of the storage medium, thereby reducing the number of parts. The stopper member may be configured, for example, to form a guide rail for the movement of the storage medium. Furthermore, once the stopper member is converted to form at least a portion of the first path, the movement of the storage medium by gravity from the loading location of the floating power generation body to the storage location of the transport ship may automatically begin.

[0012] Incidentally, the transport of energy-storable or empty storage media for power generation may also be accomplished by transport ships. In that case, it is preferable that the transfer of the storage media from the transport ship to the power generation floating structure can be accomplished without using transport machinery or equipment such as cranes.

[0013] Thus, in addition to the above configuration, in the first step, the power-generating float is fixed to the transport ship such that the height of the storage area for energy-storable or empty storage media on the transport ship is higher than the height of the storage media storage area on the power-generating float, and after the third step, a fourth step is performed in which a second path is formed through which the storage media can move between the storage area for energy-storable storage media on the transport ship and the storage area for storage media on the power-generating float, and a fifth step is performed in which the storage media is moved by gravity from the storage area on the transport ship to the storage area on the power-generating float through the second path.

[0014] Furthermore, the transfer of the storage medium from the transport ship to the power generation floating structure may be carried out regardless of whether the above configuration is present or not. Accordingly, according to the present invention, in another embodiment, a method for transferring an energy-storable storage medium to be loaded onto a power generation floating structure that generates electricity at sea in order to store the energy obtained from the power generation, from a transport ship at sea, A sixth step of fixing the power generation float to the transport ship such that the height of the storage medium loading area on the transport ship is higher than the height of the storage medium loading area on the power generation float, A seventh step is to form a second path through which the storage medium can move between the loading area of ​​the transport vessel and the loading area of ​​the power generation float, The eighth step involves moving the storage medium by gravity from the loading location of the transport ship to the loading location of the power generation float via the second path. A method including this is provided.

[0015] Even in the loading area of ​​the transport ship, a stopper member is provided at the edge to prevent the storage medium from falling, and the stopper member may be configured to be displaced in the fourth or seventh process to form at least a part of the second path.

[0016] In the above configuration, the storage medium may have a cylindrical shape and be configured to automatically roll by gravity to move between the power generation float and the transport ship. Furthermore, the storage medium may be covered with shock-absorbing material to reduce impact during movement. [Effects of the Invention]

[0017] Thus, the transfer of energy storage media between the power generation float and the transport ship in an offshore power generation system can be achieved without using transport machinery such as cranes. In this invention, once a path for the storage media is formed between the power generation float and the transport ship, the storage media will move automatically due to gravity because the height of the loading source is higher than the height of the transfer destination. Therefore, there is no need to attach ropes to the storage media to the crane's lifting hooks, which was necessary when receiving cargo with a crane. This eliminates the need for rope attachment and detachment and crane control, which normally require manned work on deck, and it is expected that the transfer of the storage media can be achieved automatically and unmanned.

[0018] Other objects and advantages of the present invention will become apparent from the following description of the preferred embodiments of the present invention.

Brief Description of the Drawings

[0019] [Figure 1] FIG. 1(A) is a schematic view of a power generation floating body used in an offshore wind power generation system to which the present embodiment is applied. FIGS. 1(B) and (C) are schematic side views and front views of a storage medium used for energy storage in the power generation floating body. [Figure 2] FIGS. 2(A) to (C) are schematic cross-sectional views of a transport ship and a power generation floating body for explaining the state of transfer of a storage medium between the transport ship having a catamaran structure and the power generation floating body in the present embodiment. (A) is a state in which the power generation floating body is positioned between the hulls of the transport ship. (B) is a state in which the stored storage medium with energy is transferred from the power generation floating body to the transport ship, and (C) is a state in which the storage medium that can store energy or is empty is transferred from the transport ship to the power generation floating body. [Figure 3] FIGS. 3(A) and (B) are schematic top views of a transport ship and a power generation floating body for explaining the state of transfer of a storage medium between the transport ship having a catamaran structure and the power generation floating body in the present embodiment. (A) is a case where the storage medium that can store energy or is empty is transferred from the transport ship to the power generation floating body after the stored storage medium with energy is transferred from the power generation floating body to the transport ship, and (B) is a state after the transfer of the storage medium that can store energy or is empty from the transport ship to the power generation floating body (the deck part is drawn omitting). [Figure 4] FIGS. 4(A) and (B) are schematic cross-sectional views and top views of a transport ship and a power generation floating body for explaining the state of transfer of a storage medium between the transport ship having a single hull structure and the power generation floating body in the present embodiment.

Explanation of Reference Numerals

[0020] 3...Storage medium, 3a...Storage medium with stored energy, 3b...Storage medium capable of storing energy or empty, 3t...Main body of the storage medium, 3c...Cushioning material, 3t...Energy inlet of the storage medium, 10...Power generation float, 10a...Float body, 10b...Sail, 10c...Power generation kite, 11...Storage medium loading area, 12...Stopper member, 20...Transport ship (tatarma), 21...Hull, 21a...Storage medium storage area, 22...Deck section, 22a...Opening in the deck section, 23...Float fixing section, 24...Stopper member, 25...Alignment mechanism, 30...Transport ship (monohama), 31...Hull, 31a...Storage medium storage area, 32...Deck section, 33...Float fixing section, 34...Stopper member, 35...Alignment mechanism [Best Mode for Carrying Out the Invention]

[0021] The present invention will be described in detail below with reference to the attached figures, with reference to several preferred embodiments. In the figures, the same reference numerals indicate the same parts.

[0022] Configuration of power generation floating body and storage medium The method according to this embodiment is applicable to the transfer of an energy storage medium between a transport ship and a power generation float in an offshore power generation system. The offshore power generation system may be any type of wind power generation system or other power generation system (such as a system that utilizes the power of tidal currents or currents) that is operated offshore, and in such a system, the power generation float is configured to move to a location offshore where it can generate power more effectively, perform power generation, and store the obtained energy in a storage medium in any manner. As the power generation float, for example, a float 10 may be used, which is a floating body 10a that floats on the sea and is equipped with a drive sail 10b, etc., and has a kite-type generator 10c mounted on it, and the energy obtained from power generation is stored in a storage medium (not shown) appropriately loaded on the body 10a.

[0023] As a method of energy storage, as already mentioned in the summary of the invention, the electrical energy obtained from power generation may be converted into hydrogen energy (chemical energy possessed by hydrogen molecules) by generating hydrogen gas through a water splitting reaction, and the energy-holding hydrogen gas may be compressed or liquefied and stored in a tank. In this case, the storage medium is a hydrogen tank. Alternatively, in another embodiment, the obtained electrical energy may be stored by charging a battery. In this case, the storage medium is a battery.

[0024] In the method according to this embodiment, the storage medium is configured to move by gravity between the power generation float and the transport ship, as already mentioned in the section on the summary of the invention, and preferably, as described later, is configured to roll by gravity. Accordingly, as shown in Figures 1(B) and (C), the storage medium 3 consists of a cylindrical body 3t and a cushioning material 3c (which may be made of rubber or the like with a low coefficient of restitution) wrapped around it, and an inlet 3j for injecting electricity or hydrogen gas or liquid hydrogen may be provided at the tip of the body 3t. When the substance actually stored in the storage medium 3 is hydrogen gas or liquid hydrogen, the body 3t may be, for example, a high-pressure container made of carbon, and during power generation, the inlet 3j may be connected to a hydrogen pipe and hydrogen gas or liquid hydrogen may be injected into the tank.

[0025] Furthermore, as schematically depicted in Figure 2(A), the storage medium 3 may be loaded onto the deck 11 of the main body 10a in the power generation floating body 10. That is, in the power generation floating body 10, the deck 11 becomes the loading area for the storage medium 3. As shown in the figure, a fence-shaped stopper member 12 is provided on the outer edge of the deck 11 in a pivotally upright position, and at least one outer edge is inclined to be lower than the inner side of the deck 11. The storage medium 3 is placed side by side such that the central axis of its cylindrical shape extends perpendicularly to the direction from the inclined inner side of the deck 11 to the outer edge. As a result, when the stopper member 12 is in an upright position, the storage medium 3 is held in a loaded state on the deck 11, and when it is displaced downward from the horizontal direction, the storage medium 3 automatically rolls due to gravity and can move outward from the outer edge.

[0026] Ship composition As already described, in the method of this embodiment, a transport ship is sent to the power generation floating 10 at sea, and the transfer of the storage medium between the power generation floating 10 and the transport ship is carried out at sea. In one embodiment, the transport ship used at that time may be a catamaran structure in which two parallel hulls 21 are connected by a deck section 22, as schematically depicted in Figures 2-3. In this case, as shown in the figures, each of the two hulls 21 is provided with a storage space 21a for the storage medium 3a to be received from the power generation floating 10, and a loading space for the storage medium 3b to be passed to the power generation floating 10 is provided on the deck section 22. Here, the storage medium 3a that the transport ship 20 receives from the power generation floating 10 is usually a storage medium that has already stored energy, and the storage medium 3b that the transport ship 20 passes to the power generation floating 10 is usually a storage medium that can store energy or is empty. Furthermore, each fuselage 21 is provided with an opening 21b on each of its opposing sides for the storage medium 3a from the power generation float 10 to pass through, and the storage area 21a for the storage medium 3a may be equipped with an alignment mechanism 25, such as a belt conveyor, for appropriately aligning the storage medium 3a received from the power generation float 10. On the other hand, in the deck section 22, which is the loading area for the storage medium 3b, an opening 22a is formed from which the storage medium 3b is dropped onto the deck 11 of the power generation float 10, as will be described later. The upper surface of the deck section 22 is inclined downward toward the opening 22a, and a fence-shaped stopper member 24 is provided at the edge of the opening 22a in a pivotally upright position. The storage medium 3b is then arranged so that its cylindrical central axis extends perpendicularly to the direction toward the edge of the inclined opening 22a of the deck section 22. As a result, when the stopper member 24 is in an upright position, the storage medium 3b is held in a loaded state on the deck, and when the stopper member 24 is displaced downward, the storage medium 3b automatically rolls due to gravity and can fall downward through the opening 22a.

[0027] Furthermore, in the case of the catamaran transport ship 20 illustrated in Figures 2-3, when transferring the storage medium 3, the power generation float 10 is moved between the two hulls 21 below the deck section 22. To position the power generation float 10 relative to the two hulls 21, float fixing parts 23 are provided on the opposing sides of the two hulls 21. The float fixing parts 23 are configured to contact the side of the main body 10a of the power generation float 10 while applying a pressing force such as rubber elastic force or magnetic force when the power generation float 10 moves below the deck section 22, thereby holding the power generation float 10 between the two hulls 21.

[0028] In another embodiment of the transport vessel used in the method of this embodiment, the transport vessel 30 may have a single-hull structure, as illustrated in Figures 4(A) and (B). In this case as well, the hull 31 is provided with a storage area 31a for the storage medium 3a, and an opening 31b is formed on the upper side for the storage medium 3a received from the power generation float 10 to pass through. The storage area 31a may be equipped with a mechanism 35 for appropriately aligning the storage medium 3a. The deck portion 32 of the hull 31 protrudes outward from the hull 31 and is inclined to become lower toward the outer edge, and a fence-shaped stopper member 34 is provided on the outer edge in a pivotally upright position. The storage medium 3b is arranged side by side such that its cylindrical central axis extends perpendicular to the direction toward the outer edge of the deck portion 32. As a result, as shown on the right in Figure 4(A), when the stopper member 34 is in an upright position, the storage medium 3b is held in a loaded state on the deck section 32, and as shown on the left in Figure 4(A), when the stopper member 34 is displaced downward, the storage medium 3b automatically rolls due to gravity and can fall downward from the outer edge. In the case of the single-hull transport ship 30 illustrated in Figure 4, when transferring the storage medium 3, the power generation float 10 is positioned below the outer edge of the deck section 32 and in contact with the side of the hull 31. A float fixing part 33 is provided to position the power generation float 10 relative to the hull 31. The float fixing part 33 may be configured to apply an attractive force, such as magnetic force, to the side of the main body 10a of the power generation float 10 so that the power generation float 10 can maintain contact with the hull 31.

[0029] Transfer of storage medium between the power generation float and the transport ship In the method of this embodiment, as already described, when transferring the storage medium between the power generation float and the transport ship, the storage medium moves automatically from the transfer source to the transfer destination by gravity without the use of transfer machinery such as cranes. To this end, first, in order to transfer the storage medium 3a from the power generation float 10 to the transport ships 20 and 30, the loading area (deck 11) of the power generation float 10 for the storage medium 3a is placed at a higher position than the storage areas 21a and 31a of the storage medium 3a on the transport ships 20 and 30. This creates a movable path for the storage medium 3a between them, and the storage medium 3a moves automatically by gravity along this path from the loading area (deck 11) of the power generation float 10 to the storage areas 21a and 31a of the transport ships 20 and 30. Furthermore, in order to transfer the storage medium 3b from the power generation float 10 to the transport ships 20 and 30, the deck sections 22 and 32 of the transport ships 20 and 30, which are the loading areas for the storage medium 3b, are positioned higher than the loading area (deck 11) of the power generation float 10. This creates a movable path for the storage medium 3b between them, and the storage medium 3b will automatically move along this path from the deck sections 22 and 32 of the transport ships 20 and 30 to the loading area (deck 11) of the power generation float 10 by gravity. The following describes the series of processes in order.

[0030] In the transfer of the storage medium between the power generation float 10 and the transport ship, first, as shown in Figures 2(A) and 4(A), the power generation float 10 is fixed to the transport ships 20 and 30. In this process, as shown in Figure 2(A), when the transport ship is a catamaran 20, as already mentioned, after the power generation float 10 enters between the two hulls 21, the float fixing parts 23 come into contact with both sides of the power generation float 10 from the sides of the two hulls 21, applying a pressing force and holding the power generation float 10 in place. Also, as shown in Figure 4(A), when the transport ship is a monohull 30, a pulling force is applied to the sides of the power generation float 10 from the float fixing parts 23 so that the power generation float 10 comes into contact with the side of the transport ship 30. Furthermore, the position of the power generation float 10 relative to the transport ships 20 and 30 is determined such that the deck 11 of the power generation float 10 containing the storage medium 3a is located at a higher position than the storage areas 21a and 31a of the transport ships 20 and 30 containing the storage medium 3a, and the deck sections 22 and 32 of the transport ships 20 and 30, which are the loading areas for the storage medium 3b, are located at a higher position than the loading area (deck 11) of the power generation float 10 containing the storage medium 3b.

[0031] As described above, once the position of the power generation float 10 is determined relative to the transport ships 20 and 30, the stopper members 12 and 22, which were standing upright on the outer edge of the deck 11 of the power generation float 10 and suppressing the movement of the storage medium 3a, pivot as shown in Figures 2(B) and 4(A). Their tips approach the lower edges of the openings 21b and 31b on the sides of the hulls 21 and 31. This causes the stopper member 12 to form a guide rail path that descends from the deck 11 of the power generation float 10 to the storage locations 21a and 31a of the transport ships 20 and 30. As a result, as shown in the figures, the storage medium 3a on the deck 11 rolls naturally and sequentially to the storage locations 21a and 31a of the transport ships 20 and 30. Furthermore, in storage areas 21a and 31a, as previously mentioned, the storage media 3a arriving in sequence may be moved appropriately by the alignment mechanisms 25 and 35 so that they are aligned sequentially within the bodies 21 and 31.

[0032] Once the storage medium 3a on the deck 11 of the power generation float 10 has been moved to the storage locations 21a and 31a of the transport ships 20 and 30, as shown in Figure 2(C), the stopper member 12 pivots back to an upright position. Subsequently, as shown in Figure 2(C) and the upper left of Figure 4(A), the stopper members 24 and 34 that were upright on the deck sections 22 and 32 of the transport ships 20 and 30 pivot, displacing their tips downwards. This creates a path from the deck sections 22 and 32 of the transport ships 20 and 30 to the deck 11 of the power generation float 10. As a result, as shown in Figure 2(C), Figure 3(A), and the left of Figure 4(A), the storage medium 3b that was loaded on the deck sections 22 and 32 of the transport ships 20 and 30 rolls and falls naturally, moving onto the deck 11. Furthermore, since the deck 11 slopes downwards toward the outer edge, the storage medium 3b naturally rolls toward the outer edge on the deck 11 and aligns itself. Thus, as shown in Figure 3(B), once the movement of the storage medium 3b from the deck sections 22 and 32 to the deck 11 of the power generation float 10 is complete (a member 13 that restricts the movement of the storage medium 3b on the deck 11 may be provided), the transfer of the storage medium between the power generation float 10 and the transport ship is completed, the action of the float fixing part 23 that fixed the power generation float 10 is released, and the power generation float 10 and the transport ships 20 and 30 separate from each other.

[0033] Furthermore, when the power generation float 10 is not loaded with storage medium 3a, only the transfer of storage medium 3b from the deck sections 22 and 32 of the transport ships 20 and 30 to the deck 11 of the power generation float 10 may be performed, and this case also falls within the scope of this embodiment.

[0034] Thus, according to the above embodiment, the movement of the storage medium between the power generation float and the transport ship is achieved by the gravity of the storage medium, eliminating the need for transport machinery and equipment such as cranes, and enabling unmanned transfer of the storage medium between the power generation float 10 and the transport ship at sea.

[0035] While the above description is made in relation to embodiments of the present invention, many modifications and changes are readily possible for those skilled in the art, and it will be clear that the present invention is not limited to the embodiments illustrated above, but can be applied to various devices without departing from the concept of the present invention.

Claims

1. A method for transferring energy obtained from a power generation floating structure that generates electricity at sea, and for transferring the storage medium loaded onto the power generation floating structure to a transport ship at sea, A first step of fixing the power generation float to the transport ship such that the height of the storage medium loading area on the power generation float is higher than the height of the storage medium storage area on the transport ship, A second step is to form a first path through which the storage medium can move between the loading location of the storage medium on the power-generating floating body and the storage location of the storage medium on the transport ship, A third process involves moving the storage medium by gravity through the first path from the loading location of the power generation float to the storage location of the transport ship, and A method that includes this.

2. The method according to claim 1, wherein in the first step, the power generation float is fixed to the transport ship such that the height of the loading area for the energy-storable storage medium on the transport ship is higher than the height of the loading area for the storage medium on the power generation float, A fourth step is to form a second path through which the storage medium can move between the loading area of ​​the energy-storable storage medium on the transport ship and the loading area of ​​the storage medium on the power-generating float, A fifth step involves moving the storage medium by gravity from the loading location of the transport ship to the loading location of the power generation float via the second path. How it is executed.

3. A method according to claim 1, wherein a stopper member for preventing the storage medium from falling is provided at the edge of the loading area of ​​the power generation floating body, and in the second process, the stopper member is displaced to form at least a part of the first path.

4. A method for transferring an energy-storage medium, which is loaded onto a floating power generator to store the energy obtained from its power generation, from a transport ship at sea, A sixth step is to fix the power generation float to the transport ship such that the height of the storage medium loading area on the transport ship is higher than the height of the storage medium loading area on the power generation float, A seventh step is to form a second path through which the storage medium can move between the loading area of ​​the transport vessel and the loading area of ​​the power generation float, The eighth step involves moving the storage medium by gravity from the loading location of the transport ship to the loading location of the power generation float via the second path. A method that includes this.

5. A method according to claims 1 to 4, wherein the storage medium has a cylindrical shape, is covered with a shock-absorbing material, and is moved by rolling due to gravity.

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