CN110578643A - Deep-sea floating type wind power generation and pumped storage combined device and working method - Google Patents
Deep-sea floating type wind power generation and pumped storage combined device and working method Download PDFInfo
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- CN110578643A CN110578643A CN201910790483.2A CN201910790483A CN110578643A CN 110578643 A CN110578643 A CN 110578643A CN 201910790483 A CN201910790483 A CN 201910790483A CN 110578643 A CN110578643 A CN 110578643A
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- 238000010248 power generation Methods 0.000 title claims abstract description 60
- 238000007667 floating Methods 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 31
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 97
- 239000010959 steel Substances 0.000 claims abstract description 97
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 70
- 230000005611 electricity Effects 0.000 claims abstract description 41
- 239000013535 sea water Substances 0.000 claims abstract description 20
- 238000004146 energy storage Methods 0.000 claims abstract description 10
- 230000000694 effects Effects 0.000 claims abstract description 7
- 238000005086 pumping Methods 0.000 claims description 11
- 238000009434 installation Methods 0.000 claims description 4
- 238000009991 scouring Methods 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 3
- 239000002775 capsule Substances 0.000 claims description 2
- 230000002337 anti-port Effects 0.000 abstract description 2
- 230000006870 function Effects 0.000 description 7
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- 239000002699 waste material Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000005381 potential energy Methods 0.000 description 3
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Classifications
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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
-
- 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
- F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
- F03D13/20—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
- F03D13/25—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors specially adapted for offshore installation
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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
- F03D9/008—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations the wind motor being combined with water energy converters, e.g. a water turbine
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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
- F03D9/20—Wind motors characterised by the driven apparatus
- F03D9/25—Wind motors characterised by the driven apparatus the apparatus being an electrical generator
- F03D9/255—Wind motors characterised by the driven apparatus the apparatus being an electrical generator connected to electrical distribution networks; Arrangements therefor
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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
-
- 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
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
-
- 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
- Y02E10/70—Wind energy
- Y02E10/727—Offshore wind turbines
-
- 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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
Abstract
The invention discloses a deep-sea floating type wind power generation and pumped storage combined device and a working method, wherein the device comprises: the device comprises a tower column of the wind driven generator, a pumped storage device and a buoyancy device, wherein the pumped storage device comprises the wind driven generator and a water pump turbine; buoyancy device for support aerogenerator tower, buoyancy device includes two vacuum steel jars, two vacuum steel jars are through connecting the bridging, and be equipped with the hydraulic turbine on the vacuum steel jar lateral wall, in order when the power consumption low peak, the electricity that utilizes aerogenerator to generate drives hydraulic turbine antiport, take out the water in the vacuum steel jar, the energy storage of drawing water, when the power consumption peak, the vacuum steel jar of impressing outside sea water through the atmospheric pressure effect, drive the hydraulic turbine electricity generation of water pump, make aerogenerator and hydraulic turbine simultaneously to the electric wire netting power supply. The device can adjust the power supply amount from the device to the power grid at different time intervals, thereby improving the utilization efficiency of electric energy and the adaptability of offshore wind power generation to the power grid.
Description
Technical Field
The invention relates to the technical field of offshore wind power in deep and remote sea areas, in particular to a deep-sea floating type wind power generation and pumped storage combined device and a working method.
Background
With the continuous development of manufacturing industry, the energy demand of China is continuously increased, fossil energy is exhausted after all, and people have more and more exploration on renewable energy. Wind power generation is a renewable energy source with a mature technology and is rapidly developed. And the wind energy is used as clean energy, has no pollution to the environment and is beneficial to popularization.
Compared with the land, the wind power resource on the sea surface is richer. In recent years, offshore wind farms are increasingly constructed, but most offshore wind farms are located in offshore areas, which affects the economic efficiency of offshore areas. For offshore deep sea areas, the construction of offshore wind power plants does not occupy land resources, and does not influence the exertion of other functions of offshore sea areas, and offshore wind power generation is inevitably carried out to offshore deep sea areas in the future.
China is wide in breadth, coastlines are long, the total length reaches 3.2 kilometers, most coasts in the east of China are monsoon climates, and offshore wind resources are very rich. The coastal areas in the east of China are economically developed, the land is precious, no large land is used for developing land wind power generation, and the offshore wind power generation has a wide prospect.
The most important challenge in constructing wind power generation on the sea is how to fix the device, and the conventional foundations comprise single-pile, multi-pile, gravity type, suction type and floating type foundations, but the foundations cannot be fixed on the seabed in offshore deep sea areas, and only the floating type foundations are suitable.
Another problem faced by offshore wind power generation is that the output power of the power generation is changed in a floating way under the influence of factors such as environment, wind speed and wind direction, and the peak value and the time interval of the output power are randomly changed. When incorporated into a power grid, it may cause problems such as grid frequency deviation, voltage fluctuation, flicker, etc. The load of the power grid is also changing continuously, and the difference between the power consumption at the peak and the power consumption at the low peak is very large.
Therefore, how to safely and efficiently incorporate wind power into a power grid is a problem to be solved in future offshore wind power development.
Disclosure of Invention
the present invention is directed to solving, at least to some extent, one of the technical problems in the related art.
Therefore, the invention aims to provide a deep-sea floating type wind power generation and pumped storage combined device.
The invention also aims to provide a working method of the deep-sea floating type wind power generation and pumped storage combined device, which is characterized in that pumped storage is carried out when the power grid is low in load, and a wind power generator and a water pump turbine are used for generating power simultaneously when the power grid is high in load, so that the influence of unstable output power of wind power generation on the power grid is relieved, and the electric energy utilization rate is improved.
In order to achieve the above object, the present invention provides a combined deep-sea floating wind power generation and pumped storage apparatus, comprising: the 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.
The deep sea floating type wind power generation and pumped storage combined device can store the 'redundant' electric energy in the low peak power utilization process when the power utilization peak is low, so that the electric energy waste is prevented; the water pump turbine can also generate electricity when the electricity consumption peak, the electric energy that will store is released, improves the utilization ratio of electric energy, simultaneously, can play the regulatory action to the electric wire netting through pumped storage, when guaranteeing electric wire netting operating efficiency, improves the adaptability of offshore wind power generation to the electric wire netting.
In addition, the deep-sea floating type wind power generation and pumped storage combined device according to the above embodiment of the present invention may further have the following additional technical features:
In one embodiment of the invention, 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 levels in the two vacuum steel tanks consistent and ensure that the buoyancy device is stable
in one embodiment of the invention, the first vacuum steel tank and the second vacuum steel tank are capsule-shaped.
In one embodiment of the invention, the two vacuum steel tanks float up and down according to the amount of water in the vacuum steel tanks.
In one embodiment of the present invention, the maximum water filling amount must be preset when the two vacuum steel tanks float up and down, so as to prevent excessive water filling and sinking.
in one embodiment of the invention, the wind turbine tower is connected to the connecting bridge in the middle.
in one embodiment of the invention, the pump turbine is installed on one side of the vacuum steel tank close to the connecting bridge to reduce the scouring of external seawater.
In one embodiment of the present invention, 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.
In one embodiment of the present invention, 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.
In order to achieve the above object, the present invention provides a method for operating a combined deep-sea floating wind power generation and pumped storage system, which uses the apparatus of the above embodiment, wherein the method comprises the following steps: detecting the current power utilization condition; when the electricity consumption is low, the pump turbine plays a role in pumping water, and water in the two vacuum steel tanks is pumped out by utilizing the reverse rotation of the pump turbine to pump water for energy storage; and when the wind power generator and the pump turbine supply power to a power grid at the same time, 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 power generator and the pump turbine supply power to the power grid at the same time.
According to the working method of the deep-sea floating type wind power generation and pumped storage combined device, redundant electric energy can be stored when the power consumption is low at the peak, and the electric energy is prevented from being wasted; the water pump turbine can also generate electricity when the electricity consumption peak, the electric energy that will store is released, improves the utilization ratio of electric energy, simultaneously, can play the regulatory action to the electric wire netting through pumped storage, when guaranteeing electric wire netting operating efficiency, improves the adaptability of offshore wind power generation to the electric wire netting.
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.
Drawings
The foregoing and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic structural diagram of a deep-sea floating wind power generation and pumped storage combined device according to an embodiment of the present invention;
fig. 2 is a flow chart of a working method of the deep-sea floating type wind power generation and pumped storage combined device according to the embodiment of the invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
The following describes the deep-sea floating type wind power generation and pumped storage combined device and the working method thereof according to the embodiments of the present invention with reference to the accompanying drawings, and first, the deep-sea floating type wind power generation and pumped storage combined device according to the embodiments of the present invention will be described with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a deep-sea floating type wind power generation and pumped storage combined device according to an embodiment of the invention.
As shown in fig. 1, the combined deep-sea floating wind power generation and pumped storage system 10 includes: a wind turbine tower 100, a pumped-hydro energy storage device 200 (not shown), and a buoyancy device 300 (not shown).
The pumped-hydro energy storage device 200 comprises a wind driven generator 201 and a pump turbine 202. Buoyancy 300 for support aerogenerator tower 100, buoyancy 300 includes first vacuum steel jar 301 and second vacuum steel jar 302, first vacuum steel jar 301 and second vacuum steel jar 302 are connected through connecting bridge 400, and be equipped with pump turbine 202 on the lateral wall of first vacuum steel jar 301 and the second vacuum steel jar 302 lateral wall respectively, in order when the power consumption low peak, the electricity that utilizes aerogenerator 201 to send drives pump turbine 202 antiport, take out the water in two vacuum steel jars, pump water storage, when the power consumption peak, impress two vacuum steel jars with outside sea water through the atmospheric pressure effect, drive pump turbine 202 and generate electricity, make aerogenerator 201 and pump turbine 202 supply power to the electric wire netting simultaneously.
It should be noted that the wind turbine tower 100 is connected to the middle of the connecting bridge 400, and the wind turbine 201 is connected to the buoyancy device 300 through the wind turbine tower 100, so that the steel tank in the buoyancy device 300 is far away from the wind turbine 201, and the blade of the wind turbine is prevented from scratching 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 in a capsule shape to improve stability of the buoyancy device 300.
It will be appreciated that the steel tank in embodiments of the invention is internally evacuated, so that external seawater can be evacuated to the steel tank at atmospheric pressure.
Further, in one embodiment of the present invention, the two vacuum steel tanks float up and down according to the amount of water in the vacuum steel tanks.
That is to say, at the in-process of "energy storage" and "electricity generation", the water level in the vacuum steel jar can constantly change, and the dead weight of whole device and the buoyancy that receives also can change thereupon, and the device can fluctuate, when needs go up connecting bridge 400 and overhaul, can fill water to the vacuum steel jar and make it sink.
Further, in one embodiment of the present invention, when the vacuum steel tank floats up and down, the maximum water filling amount of the steel tank must be specified to prevent excessive water filling and sinking.
That is, in the process of water level change in the vacuum steel tank, the maximum water filling amount must be specified to ensure that the whole device can float on the water surface and cannot sink due to excessive water filling in the vacuum steel tank.
Further, in an 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 to keep the water level inside the two vacuum steel tanks consistent, thereby improving the stability of the buoyancy device.
It should be noted that the communicating pipe 500 in the embodiment of the present invention should be a flexible pipe to prevent the weak damage due to the small deformation.
Specifically, in order to ensure the stability of the entire apparatus, the buoyancy means 300 is two capsule-shaped vacuum steel tanks connected together by a connection bridge 400. The bottoms of the two capsule-shaped vacuum steel tanks are communicated through the communicating pipe 500 to ensure that the water levels in the two capsule-shaped vacuum steel tanks are consistent, and unbalance caused by different water volumes in the two capsule-shaped vacuum steel tanks is avoided. Preferably, the communicating pipe 500 should be a flexible pipe to prevent brittle fracture under seawater scouring or small dislocation of two vacuum steel tanks.
Further, in one embodiment of the present invention, the pump turbine 202 is installed on the side of the vacuum steel tank near the connecting bridge 400 to reduce the erosion of the external seawater and also facilitate the maintenance through the connecting bridge 400.
That is to say, in order to conveniently overhaul the pump turbine 202, it should be installed on one side of two vacuum steel tanks close to the connecting bridge 400, and the maintainer can overhaul it through the connecting bridge 400, and the installation can also reduce the scouring of outside sea water to the pump turbine 202 like this.
Further, in an embodiment of the present invention, the method further includes: and mooring means 600 provided at four corners of the buoyancy means 300 to connect the buoyancy means 300 and the sea floor such that the combined wind power generation and pumped storage apparatus is maintained at a predetermined position.
It should be noted that the mooring device should be connected at the same height of the four corners of the buoyancy device 300 to improve the stability of the floating device, and the length of the cable of the mooring device 600 should be appropriate to ensure the space for the vacuum steel tank to float up and down during the "energy storage" and "power generation" processes and to contribute to the stability of the device.
Further, in an embodiment of the present invention, the method further includes: and the controller 700 (not shown in the figure) is used for switching on the wind driven generator 201 and the pump turbine 202 when the power utilization is low, the wind driven generator 201 drives the pump turbine 202 to rotate reversely, water in the two vacuum steel tanks is pumped out for water pumping and energy storage, and when the power utilization is high, a valve of the pump turbine 202 is opened, so that external seawater enters the two vacuum steel tanks to drive the pump turbine 202 to rotate forwards for power generation.
For example, when the power consumption is low, the controller is connected with the wind driven generator 201 and the pump turbine 202, the wind driven generator 201 drives the pump turbine 202 to rotate reversely, seawater in the vacuum steel tank is pumped out, and 'redundant' electric energy is converted into atmospheric pressure potential energy and water potential energy to be stored; when the electricity consumption is in a peak, the controller opens a valve of the water pump turbine 202, so that the water pump turbine is driven to rotate to convert potential energy into electric energy when external seawater enters the vacuum steel tank.
The following is a description of a specific installation process and working principle of the deep-sea floating wind power generation and pumped storage combined device according to the embodiment of the present invention.
The vacuum steel tanks are processed in a factory on the shore, the pump turbine 202 is installed, the two vacuum steel tanks are connected together and communicated through the communicating pipe 500, and the wind driven generator tower column 100 and the wind driven generator 201 are installed on the connecting bridge 400. After the onshore installation is completed, the whole device is placed in the sea and towed to the target sea area, and the vacuum steel tank is connected with the mooring device 600. After all the wind power generation devices are installed, the wind power generation devices are connected to a power grid, when the electricity consumption is low, the water pump turbine 202 has a water pumping function, and partial or all electricity generated by the wind power generator 201 can be used for driving the water pump turbine 202 to rotate reversely to pump out water in the vacuum steel tank for water pumping and energy storage; when the power consumption peak, the pump turbine 202 plays the power generation effect, and outside sea water drives the pump turbine 202 forward rotation and generates electricity when getting into the vacuum steel tank under the atmospheric pressure effect, and pump turbine 202 and wind-driven generator 201 can supply power to the electric wire netting simultaneously, guarantee the normal operating of electric wire netting when the power consumption peak.
In summary, compared with the related art, the embodiment of the present invention has at least the following effective effects: the buoyancy device adopts two capsule-shaped vacuum steel tanks, the middle of the two capsule-shaped vacuum steel tanks is connected by a connecting bridge, the area of the buoyancy device is large, and the stability of the device under the condition that the water in the vacuum steel tanks is less can be ensured. Secondly, setting the interior of a steel tank of the buoyancy device to be vacuum, and pumping water out of the vacuum steel tank by using electric energy generated by the wind driven generator when the electricity consumption is low, so as to pump water and store energy; when the power consumption peak, outside sea water enters the vacuum steel tank under the action of atmospheric pressure to drive the pump turbine to rotate forward to generate power, and the wind driven generator and the pump turbine can simultaneously supply power to a power grid. The device can store the 'redundant' electric energy in the low peak of electricity utilization, thereby preventing the waste of the electric energy; the device can be when the power consumption peak, and the pump turbine electricity generation will the electric energy release of storing, improves the utilization ratio of electric energy. Through pumped storage, the device can play the regulatory role to the electric wire netting, when guaranteeing electric wire netting operating efficiency, improves the adaptability of offshore wind power generation to the electric wire netting.
According to the deep-sea floating type wind power generation and pumped storage combined device provided by the embodiment of the invention, when the power consumption is low peak, the 'surplus' electric energy can be stored when the power consumption is low peak, so that the electric energy waste is prevented; the water pump turbine can also generate electricity when the electricity consumption peak, the electric energy that will store is released, improves the utilization ratio of electric energy, simultaneously, can play the regulatory action to the electric wire netting through pumped storage, when guaranteeing electric wire netting operating efficiency, improves the adaptability of offshore wind power generation to the electric wire netting.
Next, an operation method of the deep sea floating type wind power generation and pumped storage combined device according to the embodiment of the invention will be described with reference to the accompanying drawings.
Fig. 2 is a flow chart of a working method of the deep-sea floating wind power generation and pumped storage combined device according to an embodiment of the invention.
As shown in FIG. 2, the working method of the deep-sea floating wind power generation and pumped storage combined device adopts the device of the embodiment, wherein the working method comprises the following steps:
In step S201, the current power usage condition is detected.
in step S202, when the power consumption is low, the pump turbine 202 pumps water, and the water in the two vacuum steel tanks is pumped out by the reverse rotation of the pump turbine 202 to perform pump storage.
In step S203, when the power consumption is in a peak, the pump turbine 202 generates electricity, and external seawater is forced into the two vacuum steel tanks by the atmospheric pressure, so as to drive the pump turbine 202 to generate electricity, so that the wind driven generator 201 and the pump turbine 202 simultaneously supply power to the power grid.
It should be noted that the foregoing explanation of the embodiment of the deep-sea floating wind power generation and pumped storage combined device according to the embodiment of the present invention is also applicable to the method, and will not be described herein again.
According to the working method of the deep-sea floating type wind power generation and pumped storage combined device provided by the embodiment of the invention, when the power consumption is low, the 'surplus' electric energy in the power consumption low peak can be stored, so that the electric energy waste is prevented; the water pump turbine can also generate electricity when the electricity consumption peak, the electric energy that will store is released, improves the utilization ratio of electric energy, simultaneously, can play the regulatory action to the electric wire netting through pumped storage, when guaranteeing electric wire netting operating efficiency, improves the adaptability of offshore wind power generation to the electric wire netting.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing steps of a custom logic function or process, and alternate implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present invention.
The logic and/or steps represented in the flowcharts or otherwise described herein, e.g., an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. If implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present invention may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc. Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
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.
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