CN112145353B - Energy storage system and energy storage method of offshore wind generating set - Google Patents
Energy storage system and energy storage method of offshore wind generating set Download PDFInfo
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- CN112145353B CN112145353B CN201910573423.5A CN201910573423A CN112145353B CN 112145353 B CN112145353 B CN 112145353B CN 201910573423 A CN201910573423 A CN 201910573423A CN 112145353 B CN112145353 B CN 112145353B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
- F03D9/10—Combinations of wind motors with apparatus storing energy
- F03D9/13—Combinations of wind motors with apparatus storing energy storing gravitational potential energy
- F03D9/14—Combinations of wind motors with apparatus storing energy storing gravitational potential energy using liquids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
- F03B13/06—Stations or aggregates of water-storage type, e.g. comprising a turbine and a pump
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Combustion & Propulsion (AREA)
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- General Engineering & Computer Science (AREA)
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Abstract
The invention relates to an energy storage system and an energy storage method of an offshore wind generating set. This energy storage system includes: the first storage device is a box body with an accommodating cavity, and the first storage device is far away from the bottom of a tower of the offshore wind generating set and is arranged at a preset height away from the sea level; the energy storage device comprises a water pump and a motor in transmission connection with the water pump, and the water pump is communicated with the first storage device through a first pipeline and is communicated with seawater through a second pipeline; the motor is connected with the power grid and used for driving the water pump to pump the seawater into the first storage device; or when the first storage device releases seawater, the water pump is pushed to operate, the motor is driven to generate electricity, and electric energy is transmitted to the power grid. According to the invention, a pumped storage power station is not required to be specially constructed according to the terrain, the stored energy of the offshore wind generating set can be flexibly adjusted, and the reliability is higher.
Description
Technical Field
The invention relates to the technical field of new energy application, in particular to an energy storage system and an energy storage method of an offshore wind generating set.
Background
In recent years, with the gradual improvement of offshore wind power generation technology, offshore wind power plants begin to enter a scale development stage. Because wind energy resources are random, electric energy generated by an offshore wind generating set cannot be directly used for local loads, and therefore an offshore wind farm generally needs to be operated in a complementary mode with other stable power supplies to supply the local loads, such as a pumped storage power station. However, the pumped storage power station generally depends on specific terrain conditions to establish an upper reservoir and a lower reservoir, and when no water source is near the terrain or the terrain has no height difference, a stable power supply cannot be provided to adjust the energy of the offshore wind generating set, so that the reliability of the offshore wind generating set is reduced.
Disclosure of Invention
The invention aims to provide an energy storage system and an energy storage method of an offshore wind generating set, and the energy storage system can flexibly adjust the stored energy of the offshore wind generating set without specially constructing a pumped storage power station according to terrain conditions.
In one aspect, an embodiment of the present invention provides an energy storage system for an offshore wind turbine, including: the first storage device is a box body with an accommodating cavity, and the first storage device is far away from the bottom of a tower of the offshore wind generating set and is arranged at a preset height away from the sea level; the energy storage device comprises a water pump and a motor in transmission connection with the water pump, and the water pump is communicated with the first storage device through a first pipeline and is communicated with seawater through a second pipeline; the motor is connected with the power grid and used for driving the water pump to pump the seawater into the first storage device; or when the first storage device releases seawater, the water pump is pushed to operate, the motor is driven to generate power, and electric energy is transmitted to the power grid.
According to an aspect of the embodiment of the invention, the seawater desalination device further comprises a second storage device, the second storage device is a box body with a containing cavity and is arranged at the bottom of the tower, and the water pump is communicated with the seawater in the second storage device through a second pipeline.
According to an aspect of an embodiment of the invention, the first storage device is disposed inside the tower, outside the tower, or inside the nacelle at the top of the tower.
According to one aspect of the embodiment of the invention, the energy storage device is arranged at the bottom of the tower barrel or outside the tower barrel and below the sea level, the water pump is a reversible water pump turbine, and the motor is a bidirectional-running motor generator.
According to one aspect of the embodiment of the invention, the energy storage device is electrically connected with a control system of the offshore wind turbine generator system, and the control system is used for determining whether energy storage is needed or not according to the magnitude relation between the maximum output power of the offshore wind turbine generator system and a preset power threshold or the magnitude relation between the electricity price of a power grid and a preset electricity price threshold, and controlling a water pump of the energy storage system to pump seawater into the first storage device when the energy storage is determined to be needed; and when determining that energy storage is not needed, controlling the first storage device to release seawater, pushing the water pump to operate and driving the motor to generate power.
On the other hand, the embodiment of the invention also provides an energy storage method of an offshore wind turbine generator system, which is applied to the energy storage system of the offshore wind turbine generator system, and the energy storage method comprises the following steps: acquiring maximum output power information of an offshore wind generating set and/or electricity price information of a power grid; determining whether energy is required to be stored according to the size relation between the maximum output power information of the offshore wind generating set and a preset power threshold value or according to the size relation between the electricity price information of a power grid and a preset electricity price threshold value; and controlling an energy storage device of the energy storage system to perform corresponding operation.
According to an aspect of an embodiment of the invention, the energy storage method further comprises: when the maximum output power is greater than or equal to a preset power threshold value, or the electricity price is lower than a preset electricity price threshold value, determining that energy storage is needed; and controlling a water pump of the energy storage system to pump the seawater into the first storage device.
According to an aspect of an embodiment of the invention, the energy storage method further comprises: when the maximum output power is smaller than a preset power threshold value, or the electricity price is higher than a preset electricity price threshold value, determining that power generation is needed; the first storage device is controlled to release seawater, the water pump is pushed to operate, the motor is driven to generate electricity, and electric energy is transmitted to the power grid.
On the other hand, an embodiment of the present invention further provides a computer device, which includes: a memory storing computer program instructions; a processor which, when executed by the processor, implements the energy storage method of an offshore wind energy park as described above.
According to an aspect of an embodiment of the invention, the computer device is a main controller of the offshore wind energy plant.
According to the energy storage system and the energy storage method of the offshore wind turbine generator system, provided by the embodiment of the invention, the working principle that the self height difference of the offshore wind turbine generator system can store gravitational potential energy is utilized, the first storage device with the accommodating cavity is arranged at a preset height away from the bottom of the tower barrel and away from the sea level, the water pump of the energy storage device is communicated with the first storage device, and the motor of the energy storage device is connected with a power grid, so that mutual conversion of gravitational potential energy and electric energy can be realized, a pumped storage power station is not required to be specially built according to terrain conditions, the stored energy of the offshore wind turbine generator system can be flexibly adjusted by adjusting the preset height or the volume of the first storage device, and the energy storage system is high in reliability, low in cost and convenient to popularize and use.
Drawings
Features, advantages and technical effects of exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.
FIG. 1 is a schematic structural diagram of an energy storage system of an offshore wind turbine generator system provided by an embodiment of the invention;
FIG. 2 is a schematic structural diagram of an energy storage system of another offshore wind turbine generator system provided by the embodiment of the invention;
FIG. 3 is a schematic structural diagram of an energy storage system of another offshore wind turbine generator system provided by the embodiment of the invention;
fig. 4 is a flow chart of an energy storage method of an offshore wind turbine generator system according to an embodiment of the invention.
Wherein:
10-a first storage device; a T-tower drum; h-sea level; c-engine room; 20-a second storage device; 30-an energy storage device; 31-a water pump; 32-a motor; 41-a first conduit; 42-second conduit.
In the drawings, like parts are provided with like reference numerals. The figures are not drawn to scale.
Detailed Description
Features and exemplary embodiments of various aspects of the present invention will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention. In the drawings and the following description, well-known structures and techniques, at least in regions, are not shown in order to avoid unnecessarily obscuring the present invention; also, the size of the region structures may be exaggerated for clarity. Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
The following description is given with reference to the orientation words as shown in the drawings, and is not intended to limit the specific structure of the present invention. In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected. The specific meaning of the above terms in the present invention can be understood as appropriate to those of ordinary skill in the art.
For better understanding of the present invention, an energy storage system and an energy storage method of an offshore wind turbine generator set provided by an embodiment of the present invention are described in detail below with reference to fig. 1 to 4.
Referring to fig. 1, an embodiment of the present invention provides an energy storage system of an offshore wind turbine, including: a first storage means 10 and an energy storage means 30.
The first storage device 10 is a box with a containing cavity, which is far away from the bottom of the tower T of the offshore wind turbine and is arranged at a predetermined height from the sea level H. The tower barrel T can be a structure formed by lapping steel frames and can also be a structure formed by mixing and building the steel frames and concrete, so that the universality of the offshore wind generating set is improved.
The energy storage device 30 comprises a water pump 31 and a motor 32 in transmission connection with the water pump 31, wherein the water pump 31 is communicated with the first storage device 10 through a first pipeline 41 and is communicated with seawater through a second pipeline 42; the motor 32 is connected with the power grid and used for driving the water pump 31 to pump seawater into the first storage device 10 so as to store gravitational potential energy; alternatively, when the first storage device 10 releases the seawater, the water pump 31 is pushed to operate and the motor 32 is driven to generate power, so as to convert the gravitational potential energy into electric energy and transmit the electric energy to the power grid.
In order to increase the output of electric energy, the higher the gravitational potential energy of first storage device 10, the better. For example, the height of the tower T is 100mm, and the higher the predetermined height of the first storage device 10 from the sea level H at the bottom of the tower T is, the greater the gravitational potential energy is, when the sea water quality that can be stored by the first storage device is constant. Or, when the first storage device 10 is a predetermined height from the sea level H at the bottom of the tower T, the larger the volume of the first storage device 10 is, the larger the mass of the stored seawater is, and the larger the gravitational potential energy is, so that the energy storage size of the offshore wind turbine can be flexibly adjusted.
Therefore, the energy storage system can be operated in a complementary mode with the offshore wind turbine generator set and can be operated in a single mode, the plurality of offshore wind turbine generator sets can form a wind power plant, the plurality of energy storage systems of the whole wind power plant can also be operated simultaneously, when the power consumption of a power grid is low, the gravitational potential energy is stored, and when the power consumption of the power grid is high, the gravitational potential energy is converted into electric energy, so that the selection from low capacity to full capacity can be realized through switching, the stable electric quantity requirement is met, and the reliability of the offshore wind turbine generator sets is improved.
According to the energy storage system of the offshore wind generating set, provided by the embodiment of the invention, by utilizing the working principle that the self height difference of the offshore wind generating set can store gravitational potential energy, the first storage device 10 with the accommodating cavity is arranged at the position which is far away from the bottom of the tower T and is away from the sea level H by a preset height, the water pump 31 of the energy storage device 30 is communicated with the first storage device 10, and the motor 32 of the energy storage device 30 is connected with a power grid, so that mutual conversion of the gravitational potential energy and electric energy can be realized, a pumped storage power station is not required to be specially constructed according to topographic conditions, the stored energy of the offshore wind generating set can be flexibly adjusted by adjusting the preset height or the volume of the first storage device 10, and the energy storage system is higher in reliability, convenient for obtaining seawater, low in cost and convenient for popularization and use.
Referring again to fig. 1, the first storage device 10 may be a separate box body disposed inside the tower T, or may be integrally formed with the tower T, for example, the inner wall of the tower T may be a box body structure having a containing cavity from bottom to top.
Further, energy storage device 30 sets up in the bottom of tower section of thick bamboo T, and water pump 31 is reversible pump turbine, both can regard as the hydraulic turbine to use, also can regard as the water pump to use. The motor 32 is a motor generator that operates bidirectionally, and may be used as a generator or a motor.
Specifically, when the energy storage device 30 is in the energy storage state, the electric energy of the power grid drives the motor 32 to rotate, and drives the water pump 31 to pump the seawater into the first storage device 10, so that the electric energy is consumed, and the seawater in the first storage device 10 has gravitational potential energy, which is equivalent to storing the electric energy. When the energy storage device 30 is in a power generation state, the first storage device 10 releases seawater through the first pipeline 41 and the second pipeline 42, the seawater pushes the water pump 31 to rotate, the motor 32 is driven to generate power, power is transmitted to a power grid, and electric energy is released. The bidirectional operation and shutdown switching speed of the energy storage device 30 is high, and can be completed within tens of seconds.
Further, the energy storage device 30 is electrically connected to a control system of the offshore wind turbine, and the control system is configured to determine whether energy storage is required according to a magnitude relationship between the maximum output power of the offshore wind turbine and a predetermined power threshold, and control the energy storage device 30 to perform a corresponding operation.
For example, when the maximum output power is greater than or equal to the predetermined power threshold, it is determined that energy storage is required, the control system controls the water pump 31 to pump seawater into the first storage device 10 to store gravitational potential energy; when the maximum output power is smaller than or equal to the preset power threshold, it is determined that power generation is needed, the first storage device 10 is controlled to release seawater, the water pump 31 is pushed to operate, and the motor 32 is driven to generate power at the same time, so that gravitational potential energy is converted into electric energy, the electric energy is transmitted to the power grid, and the preset power threshold can be the rated grid-connected power of the power grid.
In addition, from the perspective of economic benefit, the power grid may adopt time-of-use electricity prices, and when the electricity prices are lower than a predetermined electricity price threshold value, it is determined that energy storage is required, the water pump 31 is controlled to pump seawater into the first storage device 10; when the electricity price is higher than a preset electricity price threshold value, which is the average electricity price in a preset time period (for example, the last year and the whole year), and it is determined that electricity generation is needed, the first storage device 10 is controlled to release seawater, the water pump 31 is pushed to operate, and the motor 32 is driven to generate electricity so as to transmit the electricity to the power grid.
The energy storage device 30 can adjust the output power, can quickly respond to the power consumption of the power grid, and can also adjust the frequency and the phase of the power grid well, so that the power grid becomes a high-quality and stable power grid.
Therefore, compared with a chemical energy storage mode, the energy storage system of the offshore wind turbine generator system provided by the embodiment of the invention has the advantages that the first storage device 10, the water pump 31, the motor 32, the first pipeline 41 and the second pipeline 42 are in mature design, the service life is long, the risk of environmental pollution such as leakage is avoided, and the reliability is high.
Referring to fig. 2, an embodiment of the present invention further provides an energy storage system of an offshore wind turbine, which is similar to the structure of fig. 1, except that the first storage device 10 is a separate box body disposed outside the tower T, and may also be integrally formed with the tower T, for example, the outer wall of the tower T may be configured as a box body structure with a containing cavity from bottom to top.
In addition, the energy storage device 30 is disposed outside the tower T and below the sea level H, so that only the first pipeline 41 is disposed between the first storage device 10 and the water pump 31, the water pump 31 directly pumps seawater from the sea, and the second pipeline 42 is not required.
Referring to fig. 3, an embodiment of the present invention further provides an energy storage system of an offshore wind turbine generator system, which is similar to the structure of fig. 1, except that the first storage device 10 is disposed in the nacelle C at the top of the tower T, and since the predetermined height of the first storage device 10 is relatively high, the volume of the first storage device can be relatively small, so as to save the occupied space of the nacelle C.
In addition, the energy storage system further includes a second storage device 20, the second storage device 20 is a box body with a containing cavity, and is disposed at the bottom of the tower T, and the water pump 31 is communicated with the first storage device 10 through a first pipeline 41 and is communicated with the seawater in the second storage device 20 through a second pipeline 42. The energy storage device 30 is placed in the tower T or below the sea level H, and the seawater is not directly drawn from the sea but circulates inside the offshore wind turbine through the second storage device 20.
The energy storage medium in the second storage device 20 may also be other liquids, such as fresh water, which has a lower salt content and can reduce corrosion of the seawater to components of the energy storage system or reduce corrosion resistance requirements of the components.
It is understood that the positions of the components in the energy storage system of the offshore wind turbine are not limited to the examples shown in fig. 1 to fig. 3, and various application combinations are possible, for example, the first storage device 10 is disposed in the cabin C, the energy storage device 30 is placed below the sea level H, the water pump 31 is communicated with the first storage device 10 only through the first pipeline 41, and the like, and details are not repeated.
Referring to fig. 4, an embodiment of the present invention further provides an energy storage method for an offshore wind turbine generator system, which is applied to any one of the energy storage systems of the offshore wind turbine generator system described above, where the energy storage method includes:
step S1: and acquiring the maximum output power information of the offshore wind generating set and/or the electricity price information of the power grid.
Step S2: determining whether energy is required to be stored according to the size relation between the maximum output power information of the offshore wind generating set and a preset power threshold value or according to the size relation between the electricity price information of a power grid and a preset electricity price threshold value; as mentioned above, the predetermined power threshold is the rated grid-connected power of the power grid, and the predetermined electricity price threshold is the average electricity price in a predetermined time period.
Step S3: and controlling an energy storage device of the energy storage system to perform corresponding operation.
Further, the energy storage method further comprises:
when the maximum output power is greater than or equal to a preset power threshold value, or the electricity price is lower than a preset electricity price threshold value, determining that energy storage is needed;
the water pump 31 of the energy storage system is controlled to pump seawater into the first storage device 10 to store gravitational potential energy.
Further, the energy storage method further comprises:
when the maximum output power is less than a preset power threshold value, for example, no wind exists at sea or wind power is insufficient, an offshore wind generating set cannot output enough power consumption, or a power grid is powered off, the offshore wind generating set needs a standby power supply, or the electricity price is higher than a preset electricity price threshold value, the requirement of power generation is determined;
the first storage device 10 is controlled to release the seawater, the water pump 31 is pushed to operate, and the motor 32 is driven to generate power, so that the gravitational potential energy is converted into electric energy, and the electric energy is transmitted to the power grid.
It can be understood that the energy storage method of the offshore wind turbine generator system provided by the embodiment of the present invention is implemented by taking the energy storage system of the offshore wind turbine generator system as an execution main body, and the content of the energy storage method based on the offshore wind turbine generator system is specifically implemented by each device of the energy storage system based on the offshore wind turbine generator system, which is not described herein again.
The energy storage method of the offshore wind turbine generator system provided by the embodiment of the invention can flexibly adjust the stored energy of the offshore wind turbine generator system without specially constructing a pumped storage power station according to the terrain conditions, and has the advantages of higher reliability, low cost and convenience for popularization and use.
In addition, the embodiment of the invention also provides computer equipment which comprises a memory and a processor. The memory stores computer program instructions which, when executed by the processor, implement the energy storage method of an offshore wind energy installation as described above.
Further, the computer device is a main controller of the offshore wind turbine generator system.
While the invention has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. It is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (9)
1. An energy storage system of an offshore wind turbine generator system, comprising:
the first storage device (10) is a box body with a containing cavity, and the first storage device (10) is far away from the bottom of a tower (T) of the offshore wind generating set and is arranged at a preset height from the sea level (H);
the energy storage device (30) comprises a water pump (31) and a motor (32) in transmission connection with the water pump (31); the water pump (31) is communicated with the first storage device (10) through a first pipeline (41) and communicated with seawater through a second pipeline (42);
the motor (32) is connected with a power grid and used for driving the water pump (31) to pump seawater into the first storage device (10); or when the first storage device (10) releases seawater, the water pump (31) is pushed to operate, the motor (32) is driven to generate power, and electric energy is transmitted to the power grid;
the energy storage device (30) is electrically connected with a control system of the offshore wind generating set, the control system is used for determining whether energy storage is needed or not according to the size relation between the maximum output power of the offshore wind generating set and a preset power threshold or the size relation between the electricity price of a power grid and a preset electricity price threshold, and when the energy storage is determined to be needed, a water pump (31) of the energy storage system is controlled to pump seawater into the first storage device (10); and when determining that energy storage is not needed, controlling the first storage device (10) to release seawater, pushing the water pump (31) to operate and driving the motor (32) to generate power.
2. Energy storage system according to claim 1, characterized in that it further comprises a second storage device (20), the second storage device (20) being a box with a housing cavity, which is arranged at the bottom of the tower (T); the water pump (31) is communicated with the seawater in the second storage device (20) through the second pipeline (42).
3. Energy storage system according to claim 1, characterized in that the first storage device (10) is arranged inside the tower (T), outside the tower (T) or inside a nacelle (C) on top of the tower (T).
4. Energy storage system according to claim 1, characterized in that the energy storage means (30) is arranged at the bottom of the tower (T) or outside the tower (T) and below the sea level (H), the water pump (31) is a reversible pump turbine and the electric motor (32) is a bidirectional motor generator.
5. An energy storage method of an offshore wind turbine generator set, which is applied to the energy storage system of the offshore wind turbine generator set according to any one of claims 1 to 4, and is characterized by comprising the following steps:
acquiring the maximum output power information of the offshore wind generating set and/or the electricity price information of a power grid;
determining whether energy is required to be stored according to the size relation between the maximum output power information of the offshore wind generating set and a preset power threshold value or according to the size relation between the electricity price information of a power grid and a preset electricity price threshold value;
and controlling an energy storage device (30) of the energy storage system to perform corresponding operation.
6. The energy storage method according to claim 5, further comprising:
when the maximum output power is larger than or equal to the preset power threshold value, or the electricity price is lower than the preset electricity price threshold value, determining that energy storage is needed;
controlling a water pump (31) of the energy storage system to pump seawater into the first storage device (10).
7. The energy storage method according to claim 5 or 6, further comprising:
when the maximum output power is smaller than the preset power threshold value, or the electricity price is higher than the preset electricity price threshold value, determining that power generation is needed;
and controlling the first storage device (10) to release seawater, pushing the water pump (31) to operate and simultaneously driving the motor (32) to generate power, and transmitting the power to a power grid.
8. A computer device, comprising:
a memory storing computer program instructions;
a processor which, when executed by the processor, implements the method of energy storage of an offshore wind energy installation according to any of claims 5 to 7.
9. Computer device according to claim 8, wherein the computer device is a master controller of the offshore wind power unit.
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| CN113417803B (en) * | 2021-07-08 | 2022-10-04 | 中国长江三峡集团有限公司 | Offshore wind turbine device and method for pumping seawater to store energy and generate power |
| CN114046225A (en) * | 2021-11-29 | 2022-02-15 | 上海电气风电集团股份有限公司 | Floating wind power generation foundation structure and wind power generator system |
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