CN110578643A - Deep-sea floating wind power generation and pumped storage combined device and working method - Google Patents

Abstract

The invention discloses a deep-sea floating combined device of wind power generation and pumped energy storage and a working method thereof, wherein the device includes: a tower column of a wind power generator, a pumped energy storage device and a buoyancy device, wherein the pumped energy storage device includes a wind power generator The buoyancy device is used to support the tower column of the wind power generator. The buoyancy device includes two vacuum steel tanks, and the two vacuum steel tanks are connected by a connecting bridge. When the power is low, use the electricity generated by the wind generator to drive the water pump and turbine to rotate in reverse, pump out the water in the vacuum steel tank for pumped water storage. , to drive the water pump turbine to generate electricity, so that the wind generator and the water pump turbine can supply power to the grid at the same time. The device can adjust its own power supply to the grid at different time periods, thereby improving the utilization efficiency of electric energy and improving the adaptability of offshore wind power generation to the grid.

Description

Deep-sea floating wind power generation and pumped storage combined device and working method

technical field

The invention relates to the technical field of offshore wind power in far-reaching sea areas, in particular to a deep-sea floating combined device for wind power generation and pumped storage and a working method.

Background technique

With the continuous development of the manufacturing industry, my country's energy demand continues to increase, and fossil energy will eventually be exhausted, and people are exploring more and more renewable energy. Wind power is a kind of renewable energy with quite mature technology, which has been developed rapidly. Moreover, wind energy, as a clean energy source, has no pollution to the environment and is conducive to popularization.

Compared with the land, the wind resources on the sea are more abundant. In recent years, more and more offshore wind farms have been built, but most of them are located in nearshore areas, which will affect the economic benefits of nearshore sea areas. For offshore deep-sea areas, the construction of offshore wind power plants not only does not occupy land resources, but also does not affect the performance of other functions in near-shore sea areas. In the future, offshore wind power generation will inevitably move to offshore deep-sea areas.

my country has a vast territory and a long coastline with a total length of 32,000 kilometers. Moreover, the eastern coast of my country is mostly a monsoon climate, and the offshore wind resources are very rich. The eastern coastal areas of my country are economically developed and the land is precious. There is no large area of land for the development of onshore wind power generation, and the prospect of offshore wind power generation is broad.

The biggest challenge in building wind power at sea is how to fix the device. At present, the commonly used foundations include single pile, multi-pile, gravity type, suction type, and floating foundation. However, in offshore deep sea areas, the foundation cannot be fixed on the seabed. Only Floating foundations apply.

Another problem facing offshore wind power generation is that, affected by factors such as the environment, wind speed, and wind direction, the output power of power generation fluctuates, and the peak value and time interval of the output power vary randomly. When it is connected to the grid, it may cause problems such as grid frequency deviation, voltage fluctuation, and flicker. The load on the power grid is also constantly changing, and the difference between peak and low peak power consumption is very large.

Therefore, how to safely and efficiently integrate wind power into the grid is a problem to be solved in the future development of offshore wind power.

Contents of the invention

The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

For this reason, an object of the present invention is to propose a deep-sea floating combined device for wind power generation and pumped storage.

Another object of the present invention is to propose a working method of a deep-sea floating wind power generation and pumped storage combined device. The working method uses pumped storage when the grid is low-loaded, and wind generators and pump-turbines when the grid is high-loaded. Generate electricity at the same time, alleviate the impact of wind power output instability on the grid, and improve the utilization rate of electric energy.

In order to achieve the above object, the present invention proposes a deep-sea floating combined wind power generation and pumped storage device, including: a wind turbine tower, a pumped storage device and a buoyancy device, wherein the pumped storage device It includes a wind power generator and a water pump turbine; the buoyancy device is used to support the tower column of the wind power generator, the buoyancy device includes a first vacuum steel tank and a second vacuum steel tank, the first vacuum steel tank and the The second vacuum steel tank is connected by a connecting bridge, and the side wall of the first vacuum steel tank and the side wall of the second vacuum steel tank are respectively equipped with the water pump and turbine, so as to utilize The electricity generated by the wind power generator drives the water pump and turbine to reversely rotate, pumping out the water in the two vacuum steel tanks for pumping and storing energy. A vacuum steel tank drives the water pump turbine to generate electricity, so that the wind generator and the water pump turbine supply power to the power grid at the same time.

The deep-sea floating wind power generation and pumped storage combined device of the embodiment of the present invention can store the "excess" electric energy during the low peak of power consumption to prevent the waste of electric energy; , The pump turbine generates electricity, releases the stored electric energy, and improves the utilization rate of electric energy. At the same time, the pumped storage can regulate the power grid to ensure the operation efficiency of the power grid and improve the adaptability of offshore wind power generation to the power grid.

In addition, the deep-sea floating combined wind power and pumped storage device according to the above-mentioned embodiments of the present invention may also have the following additional technical features:

In one embodiment of the present invention, the bottom of the first vacuum steel tank is communicated with the bottom of the second vacuum steel tank through a communication pipe, so as to keep the internal water levels of the two vacuum steel tanks consistent and ensure the buoyancy device stable

In one embodiment of the present invention, the first vacuum steel tank and the second vacuum steel tank are capsule-shaped.

In one embodiment of the present invention, the two vacuum steel tanks float up and down according to the amount of water inside them.

In one embodiment of the present invention, when the two vacuum steel tanks float up and down, the maximum amount of water filling must be preset to prevent them from sinking due to excessive water filling.

In an embodiment of the present invention, the wind power generator tower is connected to the connecting bridge in the middle.

In one embodiment of the present invention, the water pump turbine is installed on the side of the vacuum steel tank close to the connecting bridge, so as to reduce the erosion of external sea water.

In one embodiment of the present invention, it also includes: mooring devices, the mooring devices are arranged at the four corners of the buoyancy device to connect the buoyancy device and the seabed, so that the combined device of wind power generation and pumped storage remain in the intended position.

In one embodiment of the present invention, it also includes: a controller, used to connect the wind generator and the pump-turbine when the power consumption is low, and the wind generator drives the reverse of the pump-turbine. to pump out the water inside the two vacuum steel tanks for pumping energy storage. When the power consumption peaks, the valve of the water pump turbine is opened to allow external seawater to enter the two vacuum steel tanks to drive the Said water pump turbine forwardly rotates to generate electricity.

In order to achieve the above object, another aspect of the present invention proposes a working method of a deep-sea floating combined device of wind power generation and pumped storage, using the device described in the above embodiment, wherein the method includes the following steps: detecting the current power consumption Condition; when the power consumption is low peak, the water pump turbine plays the role of pumping water, and the water in the two vacuum steel tanks is pumped out by the reverse rotation of the water pump turbine to carry out pumped water storage; and when the power consumption peak time, the water pump turbine The pump-turbine plays a role in power generation, and the external seawater is pressed into the two vacuum steel tanks by atmospheric pressure, driving the pump-turbine to generate electricity, so that the wind generator and the pump-turbine supply power to the grid at the same time.

The working method of the deep-sea floating wind power generation and pumped storage combined device of the embodiment of the present invention can store the "excess" electric energy during the low peak of power consumption to prevent the waste of electric energy; During the power peak, the pump turbine generates electricity, releases the stored electric energy, and improves the utilization rate of electric energy. At the same time, pumped storage can regulate the power grid to ensure the operation efficiency of the power grid and improve the adaptability of offshore wind power generation to the power grid.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Description of drawings

The above and/or additional aspects and advantages of the present invention will become apparent and easy to understand from the following description of the embodiments in conjunction with the accompanying drawings, wherein:

Fig. 1 is a schematic structural diagram of a deep-sea floating combined wind power generation and pumped storage device according to an embodiment of the present invention;

Fig. 2 is a flow chart of the working method of the deep-sea floating combined wind power and pumped storage device according to an embodiment of the present invention.

Detailed ways

Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

The following describes the deep-sea floating wind power generation and pumped storage combined device and working method according to the embodiments of the present invention with reference to the accompanying drawings. First, the deep-sea floating wind power generation and pumped storage according to the embodiments of the present invention will be described with reference to the drawings Can combine devices.

Fig. 1 is a schematic structural diagram of a deep-sea floating combined wind power and pumped storage device according to an embodiment of the present invention.

As shown in Figure 1, the deep-sea floating combined wind power generation and pumped storage device 10 includes: a wind turbine tower 100, a pumped storage device 200 (not shown in the figure) and a buoyancy device 300 (marked in the figure). out).

Wherein, the pumped storage device 200 includes a wind generator 201 and a pump turbine 202 . The buoyancy device 300 is used to support the wind power generator tower column 100. The buoyancy device 300 includes a first vacuum steel tank 301 and a second vacuum steel tank 302. The first vacuum steel tank 301 and the second vacuum steel tank 302 are connected by a connecting bridge 400 , and the side wall of the first vacuum steel tank 301 and the side wall of the second vacuum steel tank 302 are respectively equipped with a water pump turbine 202, so that the electricity generated by the wind power generator 201 is used to drive the water pump turbine 202 to reverse Rotate to pump out the water in the two vacuum steel tanks for pumped water storage. At the peak of power consumption, the external seawater is pressed into the two vacuum steel tanks through the action of atmospheric pressure to drive the water pump turbine 202 to generate electricity, so that the wind generator 201 and The water pump turbine 202 supplies power to the grid at the same time.

It should be noted that the connecting bridge 400 is connected to the wind power generator tower 100 in the middle, and the wind power generator 201 and the buoyancy device 300 are connected through the wind power generator tower 100, so that the steel tank in the buoyancy device 300 is far away from the wind power generator 201, preventing wind power The blades of the generator scratch the vacuum steel tank under high speed rotation.

Further, in one embodiment of the present invention, the first vacuum steel tank 301 and the second vacuum steel tank 302 are capsule-shaped to improve the stability of the buoyancy device 300 .

It can be understood that the inside of the steel tank in the embodiment of the present invention is vacuum, so that the external seawater can vacuum the steel tank under the action of atmospheric pressure.

Furthermore, in one embodiment of the present invention, the two vacuum steel tanks float up and down according to the amount of water inside them.

That is to say, in the process of "energy storage" and "power generation", the water level in the vacuum steel tank will constantly change, and the self-weight and buoyancy of the entire device will also change accordingly, and the device will float up and down. When the connecting bridge 400 is overhauled, the vacuum steel tank can be filled with water to make it sink.

Furthermore, in one embodiment of the present invention, when the vacuum steel tank floats up and down, the maximum water filling volume of the steel tank must be specified to prevent the tank from sinking due to excessive water filling.

That is to say, in the process of changing the water level in the vacuum steel tank, to ensure that the whole device can float on the water surface and not sink due to the excessive water filling inside the vacuum steel tank, the maximum water filling amount must be specified.

Further, in one embodiment of the present invention, the bottom of the first vacuum steel tank 301 and the bottom of the second vacuum steel tank 302 are communicated through the communication pipe 500, so as to keep the internal water levels of the two vacuum steel tanks consistent, thereby improving the buoyancy device stability.

It should be noted that the connecting pipe 500 in the embodiment of the present invention should be a flexible pipe to prevent fragile damage under slight deformation.

Specifically, in order to ensure the stability of the whole device, the buoyancy device 300 is two capsule-shaped vacuum steel tanks connected together by a connecting bridge 400 . The bottoms of the two capsule-shaped vacuum steel tanks are connected through a connecting pipe 500 to ensure that the internal water levels are consistent and avoid imbalance due to different water volumes in the two vacuum steel tanks. Preferably, the communication pipe 500 should be a flexible pipe, so as to prevent brittle fracture under seawater washing or slight misalignment of the two vacuum steel tanks.

Further, in one embodiment of the present invention, the water pump turbine 202 is installed on the side of the vacuum steel tank close to the connecting bridge 400 to reduce the erosion of external seawater and facilitate maintenance through the connecting bridge 400 .

That is to say, in order to facilitate the maintenance of the water pump turbine 202, it should be installed on the side of the two vacuum steel tanks close to the connecting bridge 400, and the maintenance personnel can repair it through the connecting bridge 400, so that the installation can also reduce the impact of external sea water on the water pump. The scour of the water turbine 202.

Further, in one embodiment of the present invention, it also includes: a mooring device 600, the mooring device is arranged at the four corners of the buoyancy device 300, to connect the buoyancy device 300 and the seabed, so that the combined device of wind power generation and pumped storage can be kept at at the predetermined position.

It should be noted that the mooring device should be connected at the same height at the four corners of the buoyancy device 300, so as to improve the stability of the floating device, and the length of the cable of the mooring device 600 should be appropriate. In the process of "power generation", the vacuum steel tank has room to float up and down, which also has an effect on the stability of the device.

Further, in one embodiment of the present invention, it also includes: a controller 700 (not shown in the figure), which is used to connect the wind power generator 201 and the water pump turbine 202 when the power consumption is low, and the wind power The generator 201 drives the reverse rotation of the water pump turbine 202 to pump out the water inside the two vacuum steel tanks for pumped water storage. When the power consumption peaks, the valve of the water pump turbine 202 is opened to allow the external seawater to enter the two vacuum steel tanks. The tank drives the water pump turbine 202 to rotate in the forward direction to generate electricity.

For example, when the power consumption is low, the controller is connected to the wind turbine 201 and the water pump turbine 202, and the wind generator 201 drives the water pump turbine 202 to reversely rotate, pump out the seawater inside the vacuum steel tank, and convert the "excess" electric energy Store the potential energy of atmospheric pressure and water; when the power consumption peaks, the controller opens the valve of the pump turbine 202, so that when the external seawater enters the vacuum steel tank, it drives the pump turbine to rotate and converts the potential energy into electrical energy.

The specific installation process and working principle of the deep-sea floating combined wind power generation and pumped storage device according to the embodiment of the present invention will be described below.

Process the vacuum steel tanks in the onshore factory, install the water pump turbine 202, connect the two vacuum steel tanks together through the connecting pipe 500, and install the wind power generator tower 100 and the wind power generator 201 on the connecting bridge 400. After the installation on the shore is completed, the whole device is put into the sea, towed to the target sea area, and the vacuum steel tank is connected with the mooring device 600 . After all the installation is completed, the wind power generation device is connected to the power grid. When the power consumption is low, the water pump turbine 202 plays a role in pumping water, and part or all of the electricity generated by the wind power generator 201 can be used to drive the water pump turbine 202 to rotate in reverse to reduce the vacuum. The water inside the steel tank is pumped out for pumped water storage; when the power consumption peaks, the water pump turbine 202 acts to generate electricity, and the external seawater enters the vacuum steel tank under the action of atmospheric pressure and at the same time drives the water pump turbine 202 to rotate forward to generate electricity. 202 and wind power generator 201 can supply power to the grid at the same time to ensure the normal operation of the grid during peak power consumption.

To sum up, compared with the related technology, the embodiment of the present invention has at least the following effective effects: 1. The buoyancy device adopts two capsule-shaped vacuum steel tanks, which are connected by a connecting bridge in the middle, and the area of the floating device is relatively large, which can Ensure the stability of the device when there is less water inside the vacuum steel tank. 2. Set the inside of the steel tank of the buoyancy device to a vacuum. When the power consumption is low, the electric energy generated by the wind generator is used to pump water out of the vacuum steel tank for pumped water storage; Under the action of atmospheric pressure, it enters the vacuum steel tank, drives the water pump turbine to rotate forward to generate power, and the wind generator and water pump turbine can simultaneously supply power to the grid. The device can store the "excess" electric energy during the low peak of electricity consumption to prevent the waste of electric energy; the device can generate electricity by the water pump and turbine during the peak of electricity consumption, release the stored electric energy, and improve the utilization rate of electric energy. Through pumped storage, the device can regulate the power grid to ensure the operation efficiency of the power grid while improving the adaptability of offshore wind power to the power grid.

According to the deep-sea floating wind power generation and pumped storage combination device proposed by the embodiment of the present invention, when the power consumption is low, the "excess" electric energy can be stored to prevent the waste of electric energy; During peak hours, the pump turbine generates electricity and releases the stored electric energy to improve the utilization rate of electric energy. At the same time, the pumped storage can regulate the power grid to ensure the operation efficiency of the power grid and improve the adaptability of offshore wind power generation to the power grid.

Next, the working method of the deep-sea floating wind power and pumped storage combined device proposed according to the embodiment of the present invention will be described with reference to the accompanying drawings.

Fig. 2 is a flow chart of the working method of the deep-sea floating combined wind power and pumped storage device according to an embodiment of the present invention.

As shown in Figure 2, the working method of the deep-sea floating wind power and pumped storage combined device adopts the device of the above-mentioned embodiment, which includes the following steps:

In step S201, the current power consumption status is detected.

In step S202, when the power consumption is low, the water pump turbine 202 plays a pumping role, and the water in the two vacuum steel tanks is pumped out by the reverse rotation of the water pump turbine 202 to perform pumped water storage.

In step S203, when the power consumption peaks, the water pump turbine 202 acts to generate electricity, and the external seawater is pressed into the two vacuum steel tanks by the atmospheric pressure, driving the water pump turbine 202 to generate electricity, so that the wind power generator 201 and the water pump turbine 202 simultaneously generate electricity. Grid powered.

It should be noted that the foregoing explanations of the embodiment of the deep-sea floating combined wind power generation and pumped storage device proposed according to the embodiment of the present invention are also applicable to this method, and will not be repeated here.

According to the working method of the deep-sea floating wind power generation and pumped storage combined device proposed by the embodiment of the present invention, when the power consumption is low, the "excess" electric energy can be stored to prevent the waste of electric energy; During the peak period of power consumption, the pump turbine generates electricity to release the stored electric energy and improve the utilization rate of electric energy. At the same time, the pumped storage can regulate the power grid to ensure the operation efficiency of the power grid and improve the adaptability of offshore wind power to the power grid. sex.

In the description of this specification, descriptions referring to the terms "one embodiment", "some embodiments", "example", "specific examples", or "some examples" mean that specific features described in connection with the embodiment or example , structure, material or characteristic is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the described specific features, structures, materials or characteristics may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples and features of different embodiments or examples described in this specification without conflicting with each other.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

Any process or method descriptions in flowcharts or otherwise described herein may be understood to represent a module, segment or portion of code comprising one or more executable instructions for implementing custom logical functions or steps of a process , and the scope of preferred embodiments of the invention includes alternative implementations in which functions may be performed out of the order shown or discussed, including substantially concurrently or in reverse order depending on the functions involved, which shall It is understood by those skilled in the art to which the embodiments of the present invention pertain.

The logic and/or steps represented in the flowcharts or otherwise described herein, for example, can be considered as a sequenced listing of executable instructions for implementing logical functions, can be embodied in any computer-readable medium, For use with instruction execution systems, devices, or devices (such as computer-based systems, systems including processors, or other systems that can fetch instructions from instruction execution systems, devices, or devices and execute instructions), or in conjunction with these instruction execution systems, devices or equipment used. For the purposes of this specification, a "computer-readable medium" may be any device that can contain, store, communicate, propagate or transmit a program for use in or in conjunction with an instruction execution system, device or device. More specific examples (non-exhaustive list) of computer-readable media include the following: electrical connection with one or more wires (electronic device), portable computer disk case (magnetic device), random access memory (RAM), Read Only Memory (ROM), Erasable and Editable Read Only Memory (EPROM or Flash Memory), Fiber Optic Devices, and Portable Compact Disc Read Only Memory (CDROM). In addition, the computer-readable medium may even be paper or other suitable medium on which the program can be printed, since the program can be read, for example, by optically scanning the paper or other medium, followed by editing, interpretation or other suitable processing if necessary. processing to obtain the program electronically and store it in computer memory.

It should be understood that various parts of the present invention can be realized by hardware, software, firmware or their combination. In the embodiments described above, various steps or methods may be implemented by software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware as in another embodiment, it can be implemented by any one or a combination of the following techniques known in the art: a discrete Logic circuits, ASICs with suitable combinational logic gates, Programmable Gate Arrays (PGA), Field Programmable Gate Arrays (FPGA), etc.

Those of ordinary skill in the art can understand that all or part of the steps carried by the methods of the above embodiments can be completed by instructing related hardware through a program, and the program can be stored in a computer-readable storage medium. During execution, one or a combination of the steps of the method embodiments is included.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing module, each unit may exist separately physically, or two or more units may be integrated into one module. The above-mentioned integrated modules can be implemented in the form of hardware or in the form of software function modules. If the integrated modules are realized in the form of software function modules and sold or used as independent products, they can also be stored in a computer-readable storage medium.

The storage medium mentioned above may be a read-only memory, a magnetic disk or an optical disk, and the like. Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, those skilled in the art can make the above-mentioned The embodiments are subject to changes, modifications, substitutions and variations.

Claims (10)

1. A deep-sea floating type wind power generation and pumped storage combined device comprises:

A tower column of the wind driven generator, a pumped storage device and a buoyancy device, wherein,

The pumped storage device comprises a wind driven generator and a water pump turbine;

The buoyancy device is used for supporting the wind driven generator tower column, the buoyancy device comprises a first vacuum steel tank and a second vacuum steel tank, the first vacuum steel tank is connected with the second vacuum steel tank through a connecting bridge, the side wall of the first vacuum steel tank is provided with the water pump turbine on the side wall of the second vacuum steel tank respectively, so that when the electricity consumption peak is low, the electricity generated by the wind driven generator is utilized to drive the water pump turbine to rotate reversely, water in the two vacuum steel tanks is pumped out to store water for pumping, and when the electricity consumption peak is high, external seawater is pressed in through the atmospheric pressure effect to drive the two vacuum steel tanks to generate electricity for the water pump turbine to generate electricity, so that the wind driven generator and the water pump turbine supply electricity to a power grid simultaneously.

2. The deep sea floating wind power generation and pumped storage combined unit according to claim 1, wherein the first vacuum steel tank and the second vacuum steel tank are in the form of capsules.

3. The deep sea floating type wind power generation and pumped storage combined device according to claim 1, wherein the bottom of the first vacuum steel tank and the bottom of the second vacuum steel tank are communicated through a communicating pipe to keep the water level inside the two vacuum steel tanks consistent and ensure the stability of the buoyancy device.

4. The deep sea floating type wind power generation and pumped storage combined device according to claim 1, wherein the two vacuum steel tanks float up and down according to the amount of water in the two vacuum steel tanks.

5. The deep sea floating type wind power generation and pumped storage combined device according to claim 4, wherein a maximum water charging amount must be preset when the two vacuum steel tanks float up and down to prevent sinking due to excessive water charging.

6. The deep-sea floating wind power generation and pumped storage combined unit according to claim 1, wherein the wind power generator tower is connected to the connecting bridge in the middle.

7. the deep sea floating wind power generation and pumped storage combined unit according to claim 1, wherein the pump turbine is installed at one side of the vacuum steel tank near the connecting bridge to reduce the scouring of the external seawater.

8. The deep-sea floating wind power generation and pumped storage combined apparatus according to claim 1, further comprising:

mooring means disposed at the corners of the buoyancy means to connect the buoyancy means to the sea floor such that the combined wind power generation and pumped storage unit is maintained in a predetermined position.

9. The deep-sea floating wind power generation and pumped storage combined apparatus according to claim 1, further comprising:

And the controller is used for switching on the wind driven generator and the pump turbine when the electricity consumption is low, the wind driven generator drives the pump turbine to rotate reversely, water in the two vacuum steel tanks is pumped out for water pumping and energy storage, and when the electricity consumption is high, a valve of the pump turbine is opened to enable external seawater to enter the two vacuum steel tanks to drive the pump turbine to rotate forwards for power generation.

10. A method of operating a deep-sea floating wind power generation and pumped storage combined installation, using an installation according to any one of claims 1 to 9, wherein the method comprises the steps of:

Detecting the current power utilization condition;

When the electricity consumption is low, the pump turbine plays a role in pumping water, the electricity generated by the wind driven generator is utilized to drive the pump turbine to rotate reversely, and water in the two vacuum steel tanks is pumped out for pumping water and storing energy; and

When the power consumption peak is in use, the pump-turbine plays a role in power generation, external seawater is pressed into the two vacuum steel tanks under the action of atmospheric pressure to drive the pump-turbine to generate power, and the wind driven generator and the pump-turbine simultaneously supply power to a power grid.