CN115875204A - Offshore wind power alternating current system - Google Patents
Offshore wind power alternating current system Download PDFInfo
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- CN115875204A CN115875204A CN202211510210.6A CN202211510210A CN115875204A CN 115875204 A CN115875204 A CN 115875204A CN 202211510210 A CN202211510210 A CN 202211510210A CN 115875204 A CN115875204 A CN 115875204A
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- 239000001257 hydrogen Substances 0.000 claims abstract description 124
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 124
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 123
- 238000004519 manufacturing process Methods 0.000 claims abstract description 33
- 239000013535 sea water Substances 0.000 claims abstract description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 76
- 239000007788 liquid Substances 0.000 claims description 45
- 229910052757 nitrogen Inorganic materials 0.000 claims description 36
- 238000001816 cooling Methods 0.000 claims description 20
- 239000002887 superconductor Substances 0.000 claims description 19
- 239000000463 material Substances 0.000 claims description 18
- 238000005868 electrolysis reaction Methods 0.000 claims description 12
- 239000000126 substance Substances 0.000 claims description 11
- 238000010248 power generation Methods 0.000 claims description 7
- 150000002431 hydrogen Chemical class 0.000 claims description 6
- 230000001681 protective effect Effects 0.000 claims description 5
- PZKRHHZKOQZHIO-UHFFFAOYSA-N [B].[B].[Mg] Chemical compound [B].[B].[Mg] PZKRHHZKOQZHIO-UHFFFAOYSA-N 0.000 claims description 3
- 239000011241 protective layer Substances 0.000 claims description 3
- 230000001502 supplementing effect Effects 0.000 claims description 3
- OSOKRZIXBNTTJX-UHFFFAOYSA-N [O].[Ca].[Cu].[Sr].[Bi] Chemical compound [O].[Ca].[Cu].[Sr].[Bi] OSOKRZIXBNTTJX-UHFFFAOYSA-N 0.000 claims description 2
- -1 rare earth barium copper oxide Chemical class 0.000 claims description 2
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 7
- 229910001873 dinitrogen Inorganic materials 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000009835 boiling Methods 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 229920003020 cross-linked polyethylene Polymers 0.000 description 2
- 239000004703 cross-linked polyethylene Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
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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
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
Abstract
The application provides an offshore wind power alternating current system, the system includes: wind power equipment, hydrogen production equipment, a three-phase alternating current superconducting submarine cable, a power storage station and a hydrogen storage station; the system comprises a three-phase alternating current superconducting submarine cable, a wind power device, a hydrogen production device and a power supply, wherein the wind power device is respectively connected with the three-phase alternating current superconducting submarine cable and the hydrogen production device and is used for converting wind energy into first alternating current; wherein, one part of the first alternating current is transmitted to the power storage station through the three-phase alternating current superconducting submarine cable, and the other part of the first alternating current supplies power to the hydrogen production equipment; the hydrogen production equipment is used for electrolyzing seawater to generate hydrogen and transmitting the hydrogen to the hydrogen storage station through the three-phase alternating current superconducting submarine cable. Therefore, after the system converts wind energy into electric energy, part of the electric energy is transmitted to the power storage station through the three-phase alternating current superconducting submarine cable, and the other part of the electric energy is transmitted to the hydrogen storage station through the three-phase alternating current superconducting submarine cable after being converted into hydrogen energy through the hydrogen production equipment, so that the aim of fully utilizing wind energy resources is fulfilled.
Description
Technical Field
The application relates to the technical field of new energy, in particular to an offshore wind power alternating current system.
Background
As one of the technologies with wide development prospects in the current renewable energy power generation, the installed scale is rapidly increased in recent years, and the amount of offshore wind turbine generators in China is expected to exceed 1 hundred million kilowatts within several years. Compared with the land wind power field, the offshore wind power field has several unique advantages, and is a great trend of future wind power development. The advantages of offshore wind farms are mainly shown in the following aspects: (1) the quality of offshore wind resources is better than that of land and is stable; (2) land resources are saved, and noise is reduced; (3) The friction force of the sea level is small, so that the service life of the equipment can be prolonged; (4) The wind shear is small, a high tower is not needed, and the cost of the wind turbine generator can be reduced.
However, in the valley of power consumption, in order to maintain the balance of supply and demand, the output of the offshore wind turbine needs to be reduced, so that the offshore wind turbine cannot fully generate, and high-quality wind energy resources are wasted. Therefore, how to fully utilize the wind energy resource is a problem to be solved urgently at present.
Disclosure of Invention
The present application is directed to solving, at least to some extent, one of the technical problems in the related art.
Therefore, the offshore wind power alternating current system is provided, after wind energy is converted into electric energy, part of the electric energy is transmitted to a power storage station through a three-phase alternating current superconducting submarine cable, and in addition, part of the electric energy is converted into hydrogen energy through hydrogen production equipment and then transmitted to a hydrogen storage station through the three-phase alternating current superconducting submarine cable, so that the aim of fully utilizing wind energy resources is fulfilled.
In order to achieve the above object, an embodiment of the present application provides an offshore wind power ac system, which includes: wind power equipment, hydrogen production equipment, a three-phase alternating current superconducting submarine cable, a power storage station and a hydrogen storage station; the three-phase alternating current superconducting submarine cable is connected with the hydrogen production equipment through the three-phase alternating current superconducting submarine cable, and the three-phase alternating current superconducting submarine cable is connected with the hydrogen production equipment through the three-phase alternating current superconducting submarine cable; wherein a portion of the first alternating current is transmitted to the power storage station through the three-phase ac superconducting submarine cable, and another portion of the first alternating current powers the hydrogen plant; the hydrogen production equipment is used for generating hydrogen by electrolyzing seawater and transmitting the hydrogen to the hydrogen storage station through the three-phase alternating current superconducting submarine cable.
The offshore wind power alternating current system of the embodiment of the application comprises: wind power equipment, hydrogen production equipment, a three-phase alternating current superconducting submarine cable, a power storage station and a hydrogen storage station; the system comprises a three-phase alternating current superconducting submarine cable, a hydrogen production device, a wind power device, a first power supply, a second power supply, a third power supply and a fourth power supply, wherein the wind power device is respectively connected with the three-phase alternating current superconducting submarine cable and the hydrogen production device and is used for converting wind energy into first alternating current; wherein, one part of the first alternating current is transmitted to the power storage station through the three-phase alternating current superconducting submarine cable, and the other part of the first alternating current supplies power to the hydrogen production equipment; the hydrogen production equipment is used for generating hydrogen by electrolyzing seawater and transmitting the hydrogen to the hydrogen storage station through the three-phase alternating current superconducting submarine cable. Therefore, after the system converts wind energy into electric energy, part of the electric energy is transmitted to the power storage station through the three-phase alternating current superconducting submarine cable, and the other part of the electric energy is transmitted to the hydrogen storage station through the three-phase alternating current superconducting submarine cable after being converted into hydrogen energy through the hydrogen production equipment, so that the aim of fully utilizing wind energy resources is fulfilled.
In addition, the offshore wind power alternating current system provided by the embodiment of the application can also have the following additional technical characteristics:
according to an embodiment of the application, the wind power equipment comprises: a plurality of wind turbines and step-up transformers; wherein the content of the first and second substances,
the wind power generation sets are connected in parallel, and each wind power generation set is used for converting the wind energy into second alternating current;
the low-voltage side of the boosting transformer is connected with each wind turbine generator, and the boosting transformer is used for boosting the second alternating current into the first alternating current and outputting the first alternating current to the three-phase alternating current superconducting submarine cable through the high-voltage side of the boosting transformer.
According to an embodiment of the application, the wind turbine generator comprises: the system comprises a plurality of blades, an impeller, a generator, a fan converter and a box-type transformer; wherein the content of the first and second substances,
a plurality of said blades are each mounted on said impeller, said wind energy being converted into mechanical energy by said plurality of said blades;
the impeller is connected with the generator, the fan converter is respectively connected with the generator and the box-type transformer, the impeller is used for driving the generator so as to convert the mechanical energy into third alternating current through the generator, and the third alternating current is processed through the fan converter and the box-type transformer and then outputs the second alternating current.
According to an embodiment of the application, the three-phase ac superconducting submarine cable comprises:
the three-phase circuit is arranged in the same insulating protection ring, each phase of circuit comprises a superconductor and a cooling ring arranged outside the superconductor, the cooling ring is filled with the hydrogen or the liquid hydrogen, and liquid nitrogen is filled between the insulating protection ring and the cooling ring.
According to an embodiment of the application, the three-phase ac superconducting submarine cable comprises:
the three-phase circuit, the three-phase the circuit sets up inside same insulating protective layer, every looks the circuit includes hollow superconductor and the cooling circle of setting inside and outside the superconductor, fill in the cooling circle annotate hydrogen or liquid hydrogen, insulating protective circle with fill liquid nitrogen between the cooling circle.
According to one embodiment of the application, the material of the superconductor is one of the following:
magnesium diboride MgB 2 The first generation high temperature superconducting material BSCCO and the second generation high temperature superconducting material REBCO.
According to an embodiment of the application, the electricity storage station comprises: a transformer and a power grid; wherein the content of the first and second substances,
the primary side of the transformer is connected with the three-phase alternating current superconducting submarine cable, and the transformer is used for converting the first alternating current into alternating current of a target voltage level;
the power grid is connected with the secondary side of the transformer and is used for transmitting the alternating current of the target voltage grade.
According to one embodiment of the present application, the hydrogen plant comprises: a rectifier and an electrolyzer; wherein the content of the first and second substances,
the rectifier is respectively connected with the wind power equipment and the electrolysis device, and is used for converting a part of the first alternating current output by the wind power equipment into direct current so as to supply power to the electrolysis device;
the electrolysis device is used for electrolyzing the seawater to generate the hydrogen.
According to an embodiment of the application, the system further comprises: a hydrogen liquefaction unit; wherein the content of the first and second substances,
the hydrogen liquefying device is arranged between the hydrogen production equipment and the three-phase alternating current superconducting submarine cable, and is used for liquefying the hydrogen generated by the electrolyzing device to generate liquid hydrogen and conveying the liquid hydrogen to the three-phase alternating current superconducting submarine cable.
According to an embodiment of the application, the system further comprises: a nitrogen liquefaction device; wherein the content of the first and second substances,
the nitrogen liquefying device is connected with the three-phase alternating current superconducting submarine cable and is used for collecting and liquefying nitrogen generated after liquid nitrogen in the three-phase alternating current superconducting submarine cable is vaporized, and supplementing the liquefied liquid nitrogen to the three-phase alternating current superconducting submarine cable.
Additional aspects and advantages of the present application 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 present application.
Drawings
The foregoing and/or additional aspects and advantages of the present application 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 diagram of an offshore wind power AC system according to an embodiment of the present application;
FIG. 2 is a schematic diagram of an offshore wind power AC system according to one embodiment of the present application;
FIG. 3 is a schematic illustration of a cross-section of a three-phase AC superconducting submarine cable according to an embodiment of the present application;
FIG. 4 is a schematic illustration of a cross-section of a three-phase AC superconducting submarine cable according to another embodiment of the present application;
FIG. 5 is a schematic diagram of a wind turbine generator according to one embodiment of the present application.
Detailed Description
Reference will now be made in detail to the embodiments of the present application, 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 accompanying drawings are illustrative and intended to explain the present application and should not be construed as limiting the present application.
The offshore wind power alternating current system according to the embodiment of the application is described below with reference to the accompanying drawings.
FIG. 1 is a schematic diagram of an offshore wind power AC system according to an embodiment of the application.
As shown in fig. 1, an offshore wind power ac system according to an embodiment of the present application includes: wind power plant 110, hydrogen production plant 120, three-phase ac superconducting submarine cable 130, power storage station 140 and hydrogen storage station 150.
The wind power equipment 110 is respectively connected with the three-phase alternating current superconducting submarine cable 130 and the hydrogen production equipment 120, and the wind power equipment 110 is used for converting wind energy into first alternating current; wherein a portion of the first ac power is transmitted to the power storage station 140 via the three-phase ac superconducting submarine cable 130 and another portion of the first ac power supplies the hydrogen plant 120; the hydrogen plant 120 is used to generate hydrogen by electrolyzing seawater and transmit it to the hydrogen storage station 150 through the three-phase ac superconducting submarine cable 130.
After the wind power is converted into the first alternating current by the wind power equipment 110, a part of the first alternating current is directly transmitted to the power storage station 140 through the three-phase alternating current superconducting submarine cable 130.
In order to make full use of wind energy, the other part of the first alternating current is converted into hydrogen energy by the hydrogen production equipment 120, and then is transmitted to the hydrogen storage station 150 through the three-phase alternating current superconducting submarine cable 130, so that the purpose of making full use of wind energy resources is achieved.
FIG. 2 is a schematic diagram of an offshore wind power AC system, according to one embodiment of the present application.
As shown in fig. 2, the wind power plant 110 according to the embodiment of the present application includes: a plurality of wind turbines 111 and a step-up transformer 112. The wind power generation units 111 are connected in parallel, and each wind power generation unit 111 is used for converting wind energy into second alternating current; the low-voltage side of the step-up transformer 112 is connected to each wind turbine generator 111, and the step-up transformer 112 is configured to step up the second ac power into the first ac power, and output the first ac power to the three-phase ac superconducting submarine cable 130 through the high-voltage side of the step-up transformer 112.
As shown in fig. 2, a hydrogen plant 120 of the present application includes: a rectifier 121 and an electrolysis device 122. The rectifier 121 is connected to the wind power equipment 110 and the electrolysis device 122, respectively, and the rectifier 121 is configured to convert a part of the first alternating current output by the wind power equipment 110 into direct current to supply power to the electrolysis device 122; the electrolysis device 122 is used to electrolyze seawater to generate hydrogen.
As shown in fig. 2, the power storage station 140 of the present application includes: a transformer 141 and a grid 142. Wherein, the primary side of the transformer 141 is connected to the three-phase ac superconducting submarine cable 130, and the transformer 141 is configured to convert the first ac power into ac power of a target voltage class; the grid 142 is connected to the secondary side of the transformer 141, and the grid 142 is used for transmitting the ac power of the target voltage level.
In an embodiment of the present application, the offshore wind power ac system of the present application may further include: a hydrogen liquefaction unit (not shown). Wherein, the hydrogen liquefying device is arranged between the hydrogen production equipment 120 and the three-phase ac superconducting submarine cable 130, and the hydrogen liquefying device is used for liquefying the hydrogen generated by the electrolyzing device 122 to generate liquid hydrogen and conveying the liquid hydrogen to the three-phase ac superconducting submarine cable 130.
In another embodiment of the present application, a hydrogen liquefying device may be further disposed between the three-phase ac superconducting submarine cable 130 and the hydrogen storage station 150, the hydrogen liquefying device being configured to liquefy hydrogen gas transported through the three-phase ac superconducting submarine cable 130 to generate liquid hydrogen, and transport the liquid hydrogen to the hydrogen storage station 150 to store the liquid hydrogen through the hydrogen storage station 150.
In an embodiment of the present application, the offshore wind power ac system of the present application may further include: a nitrogen liquefaction unit (not shown). The nitrogen liquefaction device is connected to the three-phase ac superconducting submarine cable 130, and is configured to collect and liquefy nitrogen generated by vaporizing liquid nitrogen in the three-phase ac superconducting submarine cable 130, and supplement the liquefied nitrogen to the three-phase ac superconducting submarine cable 130.
That is, liquid nitrogen circulates inside the three-phase ac superconducting submarine cable 130, but since heat absorption causes a part of the liquid nitrogen to be evaporated into nitrogen gas, the present application may further provide a nitrogen gas liquefying device on land to collect and liquefy the nitrogen gas and replenish the nitrogen gas back into the three-phase ac superconducting submarine cable 130. The liquid nitrogen has the functions of keeping the interior of the three-phase alternating current superconducting submarine cable 130 at a lower temperature such as 77K, reducing the heat absorption and liquefaction of liquid hydrogen and ensuring the performance of the three-phase alternating current superconducting submarine cable 130.
In an embodiment of the present application, the offshore wind power ac system further includes: a nitrogen storage device (not shown); the nitrogen storage device is arranged on land, connected with the three-phase alternating current superconducting submarine cable 130 and used for storing liquid nitrogen and supplementing the liquid nitrogen to the three-phase alternating current superconducting submarine cable 130 in time.
FIG. 3 is a schematic illustration of a cross-section of a three-phase AC superconducting submarine cable according to an embodiment of the present application; fig. 4 is a schematic diagram of a cross-section of a three-phase ac superconducting submarine cable according to another embodiment of the present application.
As shown in fig. 3, the three-phase ac superconducting submarine cable 130 includes: the three-phase circuit, the three-phase circuit setting is inside same insulating guard circle, and every phase circuit includes the superconductor and sets up the cooling circle outside the superconductor, fills and annotates hydrogen or liquid hydrogen in the cooling circle, fills and annotates the liquid nitrogen between insulating guard circle and the cooling circle. That is, the three-phase ac superconducting submarine cable 130 contains three-phase lines therein, the outer circumference of each phase of superconductor contacts liquid hydrogen or hydrogen gas, and the space between the insulating protection ring and the cooling ring is filled with liquid nitrogen.
As shown in fig. 4, the three-phase ac superconducting submarine cable 130 includes: three-phase line, three-phase line set up inside same insulating protective layer, and every phase line includes hollow superconductor and the cooling circle of setting inside and outside the superconductor, fills and annotates hydrogen or liquid hydrogen in the cooling circle, fills and annotates the liquid nitrogen between insulating protective ring and the cooling circle. That is, the three-phase ac superconducting submarine cable 130 includes three-phase lines inside, each phase of superconductor is hollow, liquid hydrogen or hydrogen gas is filled in the hollow, the outer ring of each phase of superconductor contacts with the liquid hydrogen or hydrogen gas, and the space between the insulation protection ring and the cooling ring is filled with liquid nitrogen, and the three-phase ac superconducting submarine cable 130 has the advantages of large contact area between the superconductor and the hydrogen gas or the liquid hydrogen and good heat dissipation.
The superconducting material has zero resistance in a superconducting state, and the use of the superconducting cable can effectively reduce the loss of electric energy during the transmission of electric energy, but a cooling medium is required to maintain the superconducting material in a superconducting state. Superconducting materials can be divided into low-temperature superconducting materials and high-temperature superconducting materials, wherein the critical temperature of the high-temperature superconducting materials is generally above 30K. Part of the high-temperature superconducting material can maintain a superconducting state at the temperature of liquid nitrogen, and the lower temperature can improve the flow capacity of the superconducting material.
In embodiments of the present application, the superconducting material may be magnesium diboride MgB 2 (critical temperature 39K), bismuth strontium calcium copper oxygen BSCCO (first generation high temperature superconducting material, critical temperature 90-110K), rare earth copper barium oxide REBCO (second generation high temperature superconducting material). Wherein, mgB 2 The price of raw materials is low, the raw materials can be made into different shapes, and BSCCO and REBCO can be made into thin superconducting tapes to be used as cables. Under normal atmospheric pressure, the boiling point of liquid nitrogen is 77K, the boiling point of liquid hydrogen is 20K, and the liquid hydrogen can be transported to land to be used as an energy source and can also be used as a good superconducting material cooling medium.
In an embodiment of the present application, the insulating material may be XLPE (cross linked Polyethylene).
FIG. 5 is a schematic diagram of a wind turbine generator 111 according to one embodiment of the present application.
As shown in fig. 5, the wind turbine 111 according to the embodiment of the present application includes: a plurality of blades 1111, an impeller 1112, a generator 1113, a wind turbine converter 1114 and a box transformer 1115. Wherein, a plurality of blades 1111 are all installed on the impeller 1112, and the wind energy is converted into mechanical energy through the plurality of blades 1111; the impeller 1112 is connected to the generator 1113, the fan converter 1114 is connected to the generator 1113 and the box transformer 1115 respectively, the impeller 1112 is configured to drive the generator 1113 to convert the mechanical energy into a third alternating current through the generator 1113, and the third alternating current is processed by the fan converter 1114 and the box transformer 1115 to output a second alternating current.
In this embodiment, the wind energy is converted into mechanical energy by the blades 1111, the impeller 1112 is directly connected to the generator 1113 to drive the generator 1113 to generate a third ac power, such as 690V ac, and the 690V ac is converted into a second ac power, such as 35kV ac, after being boosted by the fan converter 1114 and the box transformer 1115. The wind turbine generator 111 collects the ac power of 35kV and then connects the ac power to the primary side (low voltage side) of the step-up transformer 112, and outputs a first ac power, such as 220kV ac power, through the secondary side (high voltage side) of the step-up transformer 112.
The high-voltage side of the step-up transformer 112 is respectively connected with the three-phase ac superconducting submarine cable 130 and the rectifier 121, a part of 220kV ac power is transmitted to the transformer 141 through the three-phase ac superconducting submarine cable 130, and is converted into ac power of a target voltage class through the transformer 141 and output to the power grid 142; the other part of the 220kV alternating current is converted into direct current through the rectifier 121 to supply power to the electrolysis device 122, seawater is electrolyzed through the electrolysis device 122 to generate hydrogen, the generated hydrogen is liquefied into liquid hydrogen through the hydrogen liquefaction device and then is input into the hydrogen channel of the three-phase alternating current superconducting submarine cable 130 to cool the superconductor, and nitrogen liquefied and generated in the three-phase alternating current superconducting submarine cable 130 is converted into liquid nitrogen through the nitrogen liquefaction device and then is input back into the nitrogen channel of the three-phase alternating current superconducting submarine cable 130 to keep the internal temperature of the three-phase alternating current superconducting submarine cable 130 at a lower level and reduce the heat absorption and vaporization of the liquid hydrogen.
To sum up, the offshore wind power alternating current system of the embodiment of the present application includes: wind power equipment, hydrogen production equipment, a three-phase alternating current superconducting submarine cable, a power storage station and a hydrogen storage station; the system comprises a three-phase alternating current superconducting submarine cable, a hydrogen production device, a wind power device, a first power supply, a second power supply, a third power supply and a fourth power supply, wherein the wind power device is respectively connected with the three-phase alternating current superconducting submarine cable and the hydrogen production device and is used for converting wind energy into first alternating current; wherein, one part of the first alternating current is transmitted to the power storage station through the three-phase alternating current superconducting submarine cable, and the other part of the first alternating current supplies power to the hydrogen production equipment; the hydrogen production equipment is used for generating hydrogen by electrolyzing seawater and transmitting the hydrogen to the hydrogen storage station through the three-phase alternating current superconducting submarine cable. Therefore, after the system converts wind energy into electric energy, part of the electric energy is transmitted to the power storage station through the three-phase alternating current superconducting submarine cable, and the other part of the electric energy is transmitted to the hydrogen storage station through the three-phase alternating current superconducting submarine cable after being converted into hydrogen energy through the hydrogen production equipment, so that the aim of fully utilizing wind energy resources is fulfilled.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, but are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the invention.
In addition, 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 one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means 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 application. 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.
Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.
Claims (10)
1. An offshore wind power communication system, comprising: wind power equipment, hydrogen production equipment, a three-phase alternating current superconducting submarine cable, a power storage station and a hydrogen storage station; wherein, the first and the second end of the pipe are connected with each other,
the wind power equipment is respectively connected with the three-phase alternating current superconducting submarine cable and the hydrogen production equipment, and is used for converting wind energy into first alternating current; wherein a portion of the first alternating current is transmitted to the power storage station through the three-phase ac superconducting submarine cable, and another portion of the first alternating current powers the hydrogen plant;
the hydrogen production equipment is used for generating hydrogen by electrolyzing seawater and transmitting the hydrogen to the hydrogen storage station through the three-phase alternating current superconducting submarine cable.
2. Offshore wind power alternating current system according to claim 1, characterized in that the wind power plant comprises: a plurality of wind turbines and step-up transformers; wherein the content of the first and second substances,
the wind power generation sets are connected in parallel, and each wind power generation set is used for converting the wind energy into second alternating current;
the low-voltage side of the boosting transformer is connected with each wind turbine generator, and the boosting transformer is used for boosting the second alternating current into the first alternating current and outputting the first alternating current to the three-phase alternating current superconducting submarine cable through the high-voltage side of the boosting transformer.
3. Offshore wind power communication system according to claim 2, characterized in that said wind power plant comprises: the system comprises a plurality of blades, an impeller, a generator, a fan converter and a box-type transformer; wherein the content of the first and second substances,
a plurality of said blades are each mounted on said impeller, said wind energy being converted into mechanical energy by said plurality of said blades;
the impeller is connected with the generator, the fan converter is respectively connected with the generator and the box type transformer, the impeller is used for driving the generator so as to convert the mechanical energy into third alternating current through the generator, and the third alternating current is processed through the fan converter and the box type transformer and then outputs the second alternating current.
4. Offshore wind power ac system according to claim 1, characterized in that the three-phase ac superconducting submarine cable comprises:
the three-phase circuit is arranged in the same insulating protective ring, each phase of circuit comprises a superconductor and a cooling ring arranged outside the superconductor, the cooling ring is filled with the hydrogen or the liquid hydrogen, and liquid nitrogen is filled between the insulating protective ring and the cooling ring.
5. Offshore wind power ac system according to claim 1, characterized in that the three-phase ac superconducting submarine cable comprises:
the three-phase circuit is arranged in the same insulating protective layer, each phase of the circuit comprises a hollow superconductor and a cooling ring arranged inside and outside the superconductor, the cooling ring is filled with the hydrogen or the liquid hydrogen, and liquid nitrogen is filled between the insulating protective ring and the cooling ring.
6. Offshore wind power alternating current system according to claim 4 or 5, characterized in that the material of the superconductor is one of the following:
magnesium diboride MgB 2 Bismuth strontium calcium copper oxide BSCCO and rare earth barium copper oxide REBCO.
7. Offshore wind power alternating current system according to claim 1, characterized in that said storage station comprises: a transformer and a power grid; wherein, the first and the second end of the pipe are connected with each other,
the primary side of the transformer is connected with the three-phase alternating current superconducting submarine cable, and the transformer is used for converting the first alternating current into alternating current of a target voltage level;
the power grid is connected with the secondary side of the transformer and is used for transmitting the alternating current of the target voltage grade.
8. Offshore wind power alternating current system according to claim 1, characterized in that the hydrogen production plant comprises: a rectifier and an electrolyzer; wherein the content of the first and second substances,
the rectifier is respectively connected with the wind power equipment and the electrolysis device, and is used for converting a part of the first alternating current output by the wind power equipment into direct current so as to supply power to the electrolysis device;
the electrolysis device is used for electrolyzing the seawater to generate the hydrogen.
9. Offshore wind power communication system according to claim 8, characterized in that the system further comprises: a hydrogen liquefaction unit; wherein the content of the first and second substances,
the hydrogen liquefying device is arranged between the hydrogen production equipment and the three-phase alternating current superconducting submarine cable, and is used for liquefying the hydrogen generated by the electrolyzing device to generate liquid hydrogen and conveying the liquid hydrogen to the three-phase alternating current superconducting submarine cable.
10. Offshore wind power communication system according to claim 1, characterized in that the system further comprises: a nitrogen liquefaction device; wherein the content of the first and second substances,
the nitrogen liquefying device is connected with the three-phase alternating current superconducting submarine cable, and is used for collecting and liquefying nitrogen generated after liquid nitrogen in the three-phase alternating current superconducting submarine cable is vaporized, and supplementing the liquefied liquid nitrogen to the three-phase alternating current superconducting submarine cable.
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| CN202211510210.6A CN115875204A (en) | 2022-11-29 | 2022-11-29 | Offshore wind power alternating current system |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002352645A (en) * | 2001-05-29 | 2002-12-06 | Furukawa Electric Co Ltd:The | Superconducting cable |
| CN113922371A (en) * | 2021-10-13 | 2022-01-11 | 中国石油工程建设有限公司 | Ultra-long-distance hydrogen-electricity hybrid conveying integrated system based on superconducting technology |
| CN114784858A (en) * | 2022-04-26 | 2022-07-22 | 南京邮电大学 | Liquid hydrogen cooling offshore superconducting wind power hydrogen production system |
-
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- 2022-11-29 CN CN202211510210.6A patent/CN115875204A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002352645A (en) * | 2001-05-29 | 2002-12-06 | Furukawa Electric Co Ltd:The | Superconducting cable |
| CN113922371A (en) * | 2021-10-13 | 2022-01-11 | 中国石油工程建设有限公司 | Ultra-long-distance hydrogen-electricity hybrid conveying integrated system based on superconducting technology |
| CN114784858A (en) * | 2022-04-26 | 2022-07-22 | 南京邮电大学 | Liquid hydrogen cooling offshore superconducting wind power hydrogen production system |
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