An offshore wind power foundation device and method for multi-energy utilization of wind energy, gravity energy storage and wave energy

Abstract

The present invention relates to an offshore wind power foundation device and method for multi-energy utilization of wind energy, gravity energy storage and wave energy, comprising a control system, a base, a wind turbine, a suspended gravity energy storage system and a wave power generation system; the suspended gravity energy storage system comprises a plurality of modules, each module comprising a generator, an energy storage unit, a winch, a winch rope and an energy storage weight; the generator, energy storage unit and winch are electrically connected to the control system, the winch is arranged at the top of the wind turbine and is electrically connected to the control system, one end of the winch rope is fixed to the winch, and the other end is fixedly connected to the energy storage weight; the rotor of the generator rotates synchronously with the winch, and the generator is electrically connected to the energy storage unit; the wave power generation system comprises a fixed support arm and a wave power generation device; one end of the fixed support arm is fixedly connected to the side wall of the upper end portion of the base, and the other end is connected to the wave power generation device for supporting the wave power generation device.

Description

Technical Field

[0001] The present invention relates to the technical field of novel power systems, and in particular to an offshore wind power infrastructure device and method for multi-energy utilization of wind energy, gravity energy storage, and wave energy. Background Art

[0002] As a renewable and clean energy, offshore wind power does not occupy onshore land resources, is not affected by topography, has higher and more stable wind speeds, and has a larger single-unit capacity compared to onshore wind power. In addition, China's offshore wind energy resources are very rich, and their development and utilization play a vital role in optimizing China's future energy structure. Therefore, offshore wind power has become an inevitable trend in the future development of wind power.

[0003] As we all know, wind and solar energy are significantly affected by natural factors, with the most prominent issues being the randomness and intermittency of their generation. Large-scale integration into the grid will create numerous challenges in terms of power balance, power consumption, and stable control. In particular, as their share of power increases, this will place high demands and new challenges on the rapid and flexible regulation of the power system. To ensure the safe and stable operation of the power system after the integration of various fluctuating power sources, energy storage is the most effective and indispensable solution. Therefore, energy storage technology has become one of the hottest topics in energy research today.

[0004] Regardless of the basic form, only a single form of wind energy is utilized, and the energy utilization efficiency per unit area is not high; secondly, wind power is subject to the irregular changes in wind power and cannot guarantee stable grid-connected power generation. There are obvious periods of energy surplus and energy shortage. When there is energy surplus, there is wind and power abandonment, which leads to energy waste. During the energy shortage period, the grid-connected power generation capacity is insufficient due to the small wind volume, which results in poor stable power generation capacity of wind turbines.

[0005] In the prior art CN111486057A, an offshore wind power generation system based on gravity energy storage technology, when the power grid cannot fully absorb the electric energy generated by the wind turbine, the electricity generated by the wind turbine is preferentially supplied to the power grid after being frequency-converted by the wind turbine inverter. At the same time, the remaining electricity is frequency-modulated by the energy storage motor inverter and input into the energy storage motor. The energy storage motor drives the gears in the energy storage speed regulator gearbox to rotate, and the gears in the energy storage speed regulator gearbox drive the gravity energy storage device to store energy in the form of gravitational potential energy. The prior art does not propose a specific gravity energy storage device, and whether gravity energy storage can be realized is still unknown. In addition, the prior art does not propose the comprehensive utilization of wind energy and wave energy at the same time. Summary of the Invention

[0006] In order to solve the problems existing in the above-mentioned prior art, the present invention proposes an offshore wind power infrastructure device and method for multi-energy utilization of wind energy, gravity energy storage and wave energy.

[0007] The technical solutions of the present invention are as follows:

[0008] On the one hand, the present invention proposes a basic device for the multi-energy utilization of wind energy, gravity energy storage and wave energy, which is characterized by comprising a control system, a base, a wind turbine, a suspended gravity energy storage system and a wave power generation system; the bottom of the base is fixed to the seabed, and the top extends out of the sea level, and the wind turbine is fixed to the top of the base; the control system is fixedly arranged in the wind turbine and electrically connected to the wind turbine; the suspended gravity energy storage system includes a plurality of modules, each module includes a generator, an energy storage unit, a winch, a winch and an energy storage weight, the generator, the energy storage unit and the winch are electrically connected to the control system The winch is arranged on the top of the wind turbine and is electrically connected to the control system. One end of the rope is fixed to the winch, and the other end is fixedly connected to the energy storage weight. The rotor of the generator rotates synchronously with the winch, and the generator is electrically connected to the energy storage unit. The wave power generation system includes a fixed support arm and a wave power generation device. One end of the fixed support arm is fixedly connected to the side wall of the upper end of the base, and the other end is connected to the wave power generation device for supporting the wave power generation device. The wave discharge device is arranged on the sea surface and is electrically connected to the control system. It generates electricity as the waves move and transmits it to the control system.

[0009] As a preferred implementation of this embodiment, the energy storage weight in the suspended gravity energy storage system includes an external energy storage weight and a built-in energy storage weight, wherein the external energy storage weight is arranged outside the wind turbine, and the built-in energy storage weight is arranged inside the wind turbine;

[0010] The module where the external energy storage weight is located also includes a cantilever beam, which is horizontally arranged, with one end fixed to the top of the wind turbine and the other end used to fix the winch; a rotating shaft is rotatably connected inside the cantilever beam, one end of the cantilever beam rotating shaft is connected to the winch rotating shaft, and the other end is connected to the rotor of the generator.

[0011] The winch in the module where the built-in energy storage weight is located is fixed to the top inner wall of the fan, and the rotor of the generator in the module is fixedly connected to the rotating shaft of the winch.

[0012] As a preferred implementation scheme of this embodiment, the power generation device includes a pod, a coil and a permanent magnet. The pod is a cylindrical body with upper and lower openings and a diameter larger than the permanent magnet. The pod is connected to the other end of the fixed support arm, and the pod is located above sea level. The coil is arranged in a waterproof layer on the inner wall of the pod and is electrically connected to the control system through an electrical conductor arranged in the fixed support arm. The permanent magnet is installed on a float, and the float is placed in the pod.

[0013] As a preferred implementation scheme of this embodiment, the base includes two parts, an upper end and a lower end, the upper end is the wind turbine tower; the lower end of the base is composed of foundation steel bars and foundation concrete cast as a whole, and the bottom of the lower end is fixed to the seabed; the top of the lower end of the base extends out of the seabed and is fixedly connected to the upper wind turbine tower through a flange transition section.

[0014] On the other hand, the present invention provides a method for multi-energy utilization of wind energy, gravity energy storage, and wave energy, which is implemented based on a basic device for multi-energy utilization of wind energy, gravity energy storage, and wave energy described in any embodiment of the present invention, and specifically includes the following steps:

[0015] The electric energy collected by the wind turbine and wave power generation system is transmitted to the control system by the circuit. The control system compares the collected electric energy with the power supply demand at that time to determine whether the generated electric energy can meet the power supply demand. When the collected electric energy exceeds the power supply demand, the gravity energy storage system starts to work, the winch starts to rotate, and the energy storage weight is pulled from a low place to a high place through the winch. When it reaches the winch position, it stops and is fixed to complete the energy storage. If the winch position is not reached, there is no excess electric energy to be stored, so the winch stops moving directly and fixes the energy storage weight. When the collected electric energy cannot meet the power supply demand, the gravity energy storage system starts to discharge, and the energy storage weight is released to fall freely from a high place to a low place. The energy storage weight drives the winch to rotate, and then drives the rotor of the generator to rotate. The generator generates electricity to the control system to complete the supplementary power supply.

[0016] As a preferred implementation of this embodiment, the specific method of using the external energy storage weight and the internal energy storage weight is as follows:

[0017] External energy storage weight: When the gravity energy storage system is discharged, the external energy storage weight falls freely to drive the winch shaft to rotate, and the rotation of the winch shaft drives the rotation of the cantilever beam, and the rotation of the cantilever beam shaft drives the rotation of the generator rotor to complete the generator power generation;

[0018] Built-in energy storage weight: When the gravity energy storage system is discharged, the external energy storage weight falls freely to drive the winch shaft to rotate. The rotation of the winch shaft directly drives the generator rotor to rotate, completing the generator power generation;

[0019] When the gravity energy storage system is working, both the external energy storage weight and the internal energy storage weight are pulled from a low position to a high position by the rotation of the winch to store energy.

[0020] As a preferred implementation of this embodiment, the specific steps of the operation of the ocean wave power generation system are as follows:

[0021] A float equipped with a permanent magnet is placed on the sea surface in a pod connected to the side wall of the base. The float moves vertically following the ups and downs of the waves. An induced current is generated in the coil on the inner wall of the pod and transmitted to the control system through the electrical wires in the fixed bracket arm.

[0022] On the other hand, the present invention proposes an electronic device, including a memory, a processor, and a computer program stored in the memory and runnable on the processor. When the processor executes the program, a multi-energy utilization method of wind energy, gravity energy storage, and wave energy as described in any embodiment of the present invention is implemented.

[0023] On the other hand, the present invention provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements a multi-energy utilization method of wind energy, gravity energy storage, and wave energy as described in any embodiment of the present invention.

[0024] The present invention has the following beneficial effects:

[0025] 1. The present invention proposes a specific structure of a gravity energy storage device, which can realize the storage and reuse of surplus wind energy and wave energy. In addition to having the function of gravity energy storage, it also provides vertical downward pressure to the pile foundation in a static state, and provides downward pressure stability for the foundation to resist scouring and horizontal forces such as waves.

[0026] 2. The present invention proposes an offshore wind power infrastructure device and method that utilizes wind energy, gravity energy storage and wave energy. In addition to the traditional offshore wind turbines that utilize wind power generation, they also utilize new energy sources such as gravity energy storage and wave energy, resulting in higher energy output efficiency per unit sea area.

[0027] 3. The present invention proposes an offshore wind power infrastructure device and method that utilizes wind energy, gravity energy storage, and wave energy. It can be used as a supplement to wind power in the windless season to suppress the fluctuation of the grid-connected power of traditional wind turbines. It has the function of frequency and phase modulation, thereby suppressing the fluctuation of the grid-connected power of traditional wind turbines. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the principle structure of the present invention;

[0029] Figure 2 It is a device structure with a built-in energy storage weight;

[0030] Figure 3 It is a device structure for an external energy storage weight;

[0031] Figure 4 For wave power generation systems;

[0032] Figure 5 Flowchart of the present invention.

[0033] 1. Control system; 2. Cantilever arm; 3. Winch; 4. Hitch rope; 5. Energy storage weight; 6. Fixed support arm; 7. Pod; 8. Coil; 9. Permanent magnet; 10. Wind turbine tower; 11. Foundation concrete; 12. Foundation steel bars. DETAILED DESCRIPTION

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0035] It should be understood that the step numbers used herein are only for convenience of description and are not intended to limit the order in which the steps are to be executed.

[0036] It should be understood that the terms used in the present specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in the present specification and the appended claims, the singular forms "a", "an" and "the" are intended to include the plural forms unless the context clearly indicates otherwise.

[0037] The terms “include” and “comprising” indicate the presence of described features, integers, steps, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof.

[0038] The term "and / or" refers to and includes any and all possible combinations of one or more of the associated listed items.

[0039] Example 1:

[0040] See also Figure 1, a basic device for multi-energy utilization of wind energy, gravity energy storage and wave energy, characterized in that it includes a control system 1, a base, a wind turbine, a suspended gravity energy storage system and a wave power generation system; the bottom of the base is fixed to the seabed, and the top extends out of the sea level, and the wind turbine is fixed to the top of the base; the control system 1 is fixedly arranged in the wind turbine and electrically connected to the wind turbine; the suspended gravity energy storage system includes a plurality of modules, each module includes a generator, an energy storage unit, a winch 3, a rope 4 and an energy storage weight 5, the generator, energy storage unit and winch 3 are electrically connected to the control system 1, the winch The vehicle 3 is arranged on the top of the wind turbine and is electrically connected to the control system 1. One end of the winch 4 is fixed to the winch 3, and the other end is fixedly connected to the energy storage weight 5. The rotor of the generator rotates synchronously with the winch 3, and the generator is electrically connected to the energy storage unit; the wave power generation system includes a fixed support arm 6 and a wave power generation device; one end of the fixed support arm 6 is fixedly connected to the side wall of the upper end of the base, and the other end is connected to the wave power generation device for supporting the wave power generation device. The wave discharge device is arranged on the sea surface and electrically connected to the control system 1, generating electricity as the waves move and transmitting it to the control system 1.

[0041] In practice, the present invention primarily leverages the towering structure of wind turbine towers. By placing energy storage weights inside or outside the wind turbine tower, the weights are repeatedly raised and lowered within the wind turbine tower height range (literature research indicates wind turbine heights typically range from 140m to 350m), enabling the storage and release of electrical energy. Furthermore, the present invention utilizes an advanced electric winch and control system, ensuring sufficient flexibility and a rapid response within 1 second to meet the peak-shaving needs of the power grid.

[0042] As a preferred implementation of this embodiment, see Figure 2 and Figure 3 , the energy storage weight 5 in the suspended gravity energy storage system includes an external energy storage weight and a built-in energy storage weight, the external energy storage weight is arranged outside the wind turbine, and the built-in energy storage weight is arranged inside the wind turbine;

[0043] The module where the external energy storage weight is located also includes a cantilever beam 2, which is horizontally arranged, with one end fixed to the top of the wind turbine and the other end used to fix the winch 3; the cantilever beam 2 is internally connected to a rotating shaft, one end of the cantilever beam 2 rotating shaft is connected to the winch 3 rotating shaft, and the other end is connected to the rotor of the generator.

[0044] In specific implementation, the fan pipe diameter will vary depending on the fan height and the area in which it is located. When the fan pipe diameter is large, it is suitable to install the energy storage block internally, without the need to expand the fan foundation area. At the same time, the internal energy storage block also has a positive effect on the stability of the fan from the perspective of force. When the fan pipe diameter is small, it is suitable to install the energy storage block externally. It is necessary to appropriately expand the foundation top surface area outside the pipe diameter to support the energy storage block. In this case, the internal space of the fan pipe diameter is not utilized, and the space occupied by the energy storage block increases the fan foundation area.

[0045] As a preferred implementation of this embodiment, see Figure 4 The power generation device includes a pod 7, a coil 8 and a permanent magnet 9. The pod 7 is a cylindrical body with upper and lower openings and a diameter larger than the permanent magnet 9. The pod 7 is connected to the other end of the fixed support arm 6, and the pod 7 is located above the sea level. The coil 8 is arranged in a waterproof layer on the inner wall of the pod 7 and is electrically connected to the control system 1 through an electrical wire arranged in the fixed support arm 6. The permanent magnet 9 is installed on a float, and the float is placed in the pod 7.

[0046] In specific implementation, the permanent magnet is installed on a float floating on the sea surface. The float uses the ups and downs of the waves to drive the aluminum alloy permanent magnet to move vertically, causing the magnetic flux in the fixed coil to change and generate alternating current. The coil diameter is slightly larger than the permanent magnet to ensure that even if the permanent magnet does not move completely vertically, it can still cut the magnetic lines of force at a large angle; at the same time, a mesh screen can be added above and below the pod to ensure that the float will not run out of the range of the pod.

[0047] As a preferred implementation scheme of this embodiment, the base includes two parts, an upper end and a lower end, the upper end is the wind turbine tower 10; the lower end of the base is composed of foundation steel bars 12 and foundation concrete 11 cast as a whole, and the bottom of the lower end is fixed to the seabed; the top of the lower end of the base extends out of the seabed and is fixedly connected to the upper wind turbine tower 10 through a flange transition section.

[0048] Example 2:

[0049] See also Figure 5 A method for multi-energy utilization of wind energy, gravity energy storage and wave energy is implemented based on a basic device for multi-energy utilization of wind energy, gravity energy storage and wave energy according to any embodiment of the present invention, and is characterized in that the specific steps include:

[0050] The electric energy collected by the wind turbine and the wave power generation system is transmitted to the control system 1 by the circuit. The control system 1 compares the collected electric energy with the power supply demand at that time to determine whether the generated electric energy can meet the power supply demand; when the collected electric energy exceeds the power supply demand, the gravity energy storage system starts to work, the winch 3 starts to rotate, and the energy storage weight 5 is pulled from a low place to a high place through the winch 4. When it reaches the winch position, it stops and is fixed to complete the energy storage; if the winch 3 position is not reached, there is no excess electric energy to be stored, then the winch 3 stops moving directly and fixes the energy storage weight 5; when the collected electric energy cannot meet the power supply demand, the gravity energy storage system starts to discharge, and the energy storage weight 5 is released to fall freely from a high place to a low place. The energy storage weight 5 drives the winch 3 to rotate, and then drives the rotor of the generator to rotate, and the generator generates electricity to the control system 1 to complete the supplementary power supply.

[0051] During specific implementation, wind energy and wave energy during periods of energy surplus will be converted into the gravitational potential energy of energy storage blocks and stored. During periods of energy scarcity, the gravitational potential energy of the energy storage blocks will be used as a supplement for grid-connected power generation. At the same time, the electricity converted from wave energy can also suppress the fluctuation of the grid-connected power of traditional power grid units during the power generation period, increase the energy output per unit sea area, and help achieve carbon neutrality earlier.

[0052] As a preferred implementation of this embodiment, the specific method of using the external energy storage weight and the internal energy storage weight is as follows:

[0053] External energy storage weight: When the gravity energy storage system is discharged, the external energy storage weight falls freely to drive the rotation shaft of winch 3 to rotate, and the rotation of the rotation shaft of winch 3 drives the rotation shaft of cantilever beam 2 to rotate, and the rotation of the rotation shaft of cantilever beam 2 drives the rotor of the generator to rotate, completing the generator power generation;

[0054] Built-in energy storage weight: When the gravity energy storage system is discharged, the external energy storage weight falls freely to drive the rotation shaft of winch 3 to rotate. The rotation of the rotation shaft of winch 3 directly drives the generator rotor to rotate, completing the generator power generation;

[0055] When the gravity energy storage system is working, both the external energy storage weight and the internal energy storage weight are rotated by the winch 3 to pull the energy storage weight from a low position to a high position for energy storage.

[0056] As a preferred implementation of this embodiment, the specific steps of the operation of the ocean wave power generation system are as follows:

[0057] A float equipped with a permanent magnet 9 is placed on the sea surface and in a pod 7 connected to the side wall of the base. The float moves vertically following the ups and downs of the waves. An induced current is generated in the coil 8 on the inner wall of the pod 7 and is transmitted to the control system through the electrical wire in the fixed bracket arm 6.

[0058] Example 3:

[0059] This embodiment provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the program, a method for multi-energy utilization of wind energy, gravity energy storage, and wave energy as described in any embodiment of the present invention is implemented.

[0060] Example 4:

[0061] A computer-readable storage medium stores a computer program, which, when executed by a processor, implements a multi-energy utilization method of wind energy, gravity energy storage, and wave energy as described in any embodiment of the present invention.

[0062] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention's description and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A basic device for multi-energy utilization of wind energy, gravity energy storage and wave energy, characterized in that: The invention comprises a control system (1), a base, a wind turbine, a suspended gravity energy storage system and a wave power generation system; the bottom of the base is fixed on the seabed, the top extends out of the sea level, and the wind turbine is fixed on the top of the base; the control system (1) is fixedly arranged in the wind turbine and electrically connected to the wind turbine; the suspended gravity energy storage system comprises a plurality of modules, each module comprises a generator, an energy storage unit, a winch (3), a winch (4) and an energy storage weight (5); the generator, the energy storage unit and the winch (3) are electrically connected to the control system (1); the winch (3) is arranged on the top of the wind turbine and is electrically connected to the control system (1) Electrical connection, wherein one end of the strand (4) is fixed to the winch (3), and the other end is fixedly connected to the energy storage weight (5), the rotor of the generator and the winch (3) rotate synchronously, and the generator is electrically connected to the energy storage unit; the wave power generation system comprises a fixed support arm (6) and a wave power generation device; one end of the fixed support arm (6) is fixedly connected to the side wall of the upper end of the base, and the other end is connected to the wave power generation device for supporting the wave power generation device, the wave discharge device is arranged on the sea surface and is electrically connected to the control system (1), generates electrical energy with the movement of the waves and transmits it to the control system (1); The energy storage weight (5) in the suspended gravity energy storage system includes an external energy storage weight and an internal energy storage weight, wherein the external energy storage weight is arranged outside the fan, and the internal energy storage weight is arranged inside the fan; The module where the external energy storage weight block is located further comprises a cantilever beam (2), wherein the cantilever beam (2) is arranged horizontally, one end of which is fixed to the top of the wind turbine, and the other end of which is used to fix the winch (3); a rotating shaft is rotatably connected inside the cantilever beam (2), one end of the rotating shaft of the cantilever beam (2) is connected to the rotating shaft of the winch (3), and the other end is connected to the rotor of the generator; The winch (3) in the module where the built-in energy storage weight is located is fixed to the top inner wall of the fan, and the rotor of the generator in the module is fixedly connected to the rotating shaft of the winch (3); The power generation device comprises a pod (7), a coil (8) and a permanent magnet (9). The pod (7) is a columnar body with upper and lower openings and a diameter larger than the permanent magnet (9). The pod (7) is connected to the other end of the fixed support arm (6), and the pod (7) is located above the sea level. The coil (8) is arranged in a waterproof layer on the inner wall of the pod (7) and is electrically connected to the control system (1) through an electric wire arranged in the fixed support arm (6). The permanent magnet (9) is installed on a float, and the float is placed in the pod (7).

2. The basic device for multi-energy utilization of wind energy, gravity energy storage and wave energy according to claim 1, characterized in that: The base comprises an upper end and a lower end, the upper end being a wind turbine tower (10); the lower end of the base is formed by integrally casting foundation steel bars (12) and foundation concrete (11), and the bottom of the lower end is fixed to the seabed; the top of the lower end of the base extends out of the seabed and is fixedly connected to the upper wind turbine tower (10) via a flange transition section.

3. A method for multi-energy utilization of wind energy, gravity energy storage and wave energy, which is realized based on the basic device for multi-energy utilization of wind energy, gravity energy storage and wave energy according to any one of claims 1-2, characterized in that: The specific steps include: The electric energy collected by the wind turbine and the wave power generation system is transmitted to the control system (1) by the circuit. The control system (1) compares the electric energy collected with the power supply demand at that time to determine whether the generated electric energy can meet the power supply demand. When the collected electric energy exceeds the power supply demand, the suspended gravity energy storage system starts to work, the winch (3) starts to rotate, and the energy storage weight (5) is pulled from a low position to a high position through the winch (4). When it reaches the winch position, it stops and is fixed to complete the energy storage. If it fails to reach the winch (3) position, there is no excess electric energy to be stored, and the winch (3) directly stops and fixes the energy storage weight (5). When the collected electric energy cannot meet the power supply demand, the suspended gravity energy storage system starts to discharge, and the energy storage weight (5) is released to fall freely from a high position to a low position. The energy storage weight (5) drives the winch (3) to rotate, and then drives the rotor of the generator to rotate. The generator generates electricity to the control system (1) to complete the supplementary power supply.

4. The method for multi-energy utilization of wind energy, gravity energy storage and wave energy according to claim 3, characterized in that: The specific usage of the external energy storage weight and the internal energy storage weight is as follows: External energy storage weight: When the suspended gravity energy storage system is discharged, the external energy storage weight falls freely to drive the winch (3) rotating shaft to rotate, the rotation of the winch (3) rotating shaft drives the rotation of the cantilever beam (2), and the rotation of the cantilever beam (2) drives the rotor of the generator to rotate, completing the generator power generation; Built-in energy storage weight: When the suspended gravity energy storage system is discharged, the external energy storage weight falls freely to drive the winch (3) shaft to rotate, and the rotation of the winch (3) shaft directly drives the generator rotor to rotate, completing the generator power generation; When the suspended gravity energy storage system is working, both the external energy storage weight and the internal energy storage weight are rotated by the winch (3) to pull the energy storage weight from a low position to a high position for energy storage.

5. The method for multi-energy utilization of wind energy, gravity energy storage and wave energy according to claim 3, characterized in that: The specific steps of the wave power generation system are as follows: A float equipped with a permanent magnet (9) is placed on the sea surface and in a pod (7) connected to the side wall of the base. The float moves vertically following the ups and downs of the waves. An induced current is generated in a coil (8) on the inner wall of the pod (7) and is transmitted to a control system through an electrical conductor in a fixed bracket arm (6).

6. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the program, a multi-energy utilization method of wind energy, gravity energy storage and wave energy is implemented as described in any one of claims 3 to 5.

7. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, a multi-energy utilization method of wind energy, gravity energy storage and wave energy as described in any one of claims 3 to 5 is implemented.

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