CN112943545A - Floating type fan foundation - Google Patents
Floating type fan foundation Download PDFInfo
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- CN112943545A CN112943545A CN202011238449.3A CN202011238449A CN112943545A CN 112943545 A CN112943545 A CN 112943545A CN 202011238449 A CN202011238449 A CN 202011238449A CN 112943545 A CN112943545 A CN 112943545A
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- columns
- upright post
- sleeve
- support
- upright
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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
- 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
- F03D13/22—Foundations specially adapted for wind motors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
- B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
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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
- 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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
- B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
- B63B2035/4433—Floating structures carrying electric power plants
- B63B2035/446—Floating structures carrying electric power plants for converting wind energy into electric energy
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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
- Y02E10/70—Wind energy
- Y02E10/728—Onshore wind turbines
Abstract
The invention discloses a floating type fan foundation, which comprises: the device comprises an upright post sleeve, a support upright post, a plurality of side upright posts, a telescopic cross brace structure, a tubular connecting piece and a bottom soft cabin structure; the upright post sleeve is used for supporting a fan tower, and the supporting upright post has a telescopic structure which can be stretched in the vertical direction; the side upright posts are symmetrically arranged around the supporting upright post; the telescopic cross brace structure is connected between two adjacent side upright columns and can be stretched in the horizontal direction; the tubular connectors comprise a first tubular connector and a second tubular connector; the both ends of first tubulose connecting piece respectively with side stand upper end with the stand sleeve is articulated, the both ends of second tubulose connecting piece respectively with side stand lower extreme with the soft cabin structure in bottom is articulated, makes the support post is in when the vertical direction is tensile/compressed, scalable stull structure is in compress/stretch in the horizontal direction.
Description
Technical Field
The invention relates to the technical field of power generation equipment, in particular to a variable column span SPAR type single-point floating type fan foundation.
Background
In recent years, in the process of developing and utilizing renewable energy, namely wind energy, by human beings, a wind turbine gradually turns to offshore from onshore, and gradually goes to deep open sea from offshore. In this process, various forms of offshore floating wind turbine foundations emerge, of which four types of floating wind turbine foundations, namely single column (SPAR), Semi-Submersible (Semi-Submersible), Tension Leg (TLP) and ship type (Barge), are the most common.
At present, Europe and America countries are in the leading position in the research and development capability and investment of the floating type fan foundation. Wherein, several kinds of floating fan foundations of most representative include:
(1) the single-column foundation is developed by Norwegian national oil company (Equinor), and consists of a lower floating body with the diameter of 14.4m and a transition section with the diameter of 7.5m, wherein the upper part of the transition section bears a tower drum and a fan, and the integral structure is simple;
(2) WindFloat (semi-submersible foundation) developed by Principle Power in the U.S., the foundation is composed of three upright columns with the diameter of about 10m, the upright columns are connected and reinforced through cross braces and inclined braces, and a hexagonal thin plate structure is arranged at the bottoms of the upright columns to serve as a heave plate;
(3) the floating foundation (tension leg foundation) developed by SBM offset of france and used in the PGL Offshore wind farm project has a truss-like overall structure, wherein the part for connecting the mooring system is three circular section columns, and anchor chain locking devices are mounted on the columns;
(4) the floating fan foundation is composed of a buoy shaped like a Chinese character 'hui', and the damping pool technology is adopted to realize the anti-rolling function.
Because of the limit of shallow water depth (mostly about 30-50 m) near the coast in China, the foundation form adopted by the offshore wind power site at present mainly takes fixed foundations such as single piles, jacket and high-rise pile cap as the main foundation. The application of the floating foundation is still in the starting stage, wherein the floating prototype projects mainly pushed by companies such as the three gorges new energy and the dragon source electric power are relatively in the leading position, but the basic schemes adopted by the companies are all in the form of semi-submersible foundation structures.
The semi-submersible foundation is mainly characterized in that the area of a water plane is small, the span between stand columns is large, the structural form is relatively simple, but the main defects of large size and high construction cost are the main defects; in addition, because the span of the upright post is large, when the semi-submersible foundation is used in a shallow water environment and the motion of the semi-submersible foundation is large (mainly rolling and pitching), the bottom contact accident is easy to happen at the boundary of the bottom of the upright post, and great potential safety hazards exist.
The column foundation is mainly of a slender structure as a whole, so that the problems such as boundary bottoming do not exist; meanwhile, the inherent period of the six-degree-of-freedom motion of the foundation is larger than that of a semi-submersible foundation, and the column foundation has better motion performance and is more favorable for wind turbine power generation for sea areas with the same environmental conditions; however, for the conventional column foundation structure, the height of the part of the conventional column foundation structure submerged in water can reach 80-100m (such as Hywind and the like), and the conventional column foundation structure is obviously not suitable for most offshore shallow water depth sea areas in China.
In addition, the arrangement of the mooring system is also a difficult problem for floating foundations. For semi-submersible foundations the available mooring system forms are almost exclusively conventional catenary mooring, whereas for column foundations the options are relatively large, both catenary and semi-tensioned or fully tensioned mooring systems can be used, and the mooring system design is relatively limited. For the floating type fan with extremely sensitive cost, if the cost ratio of the mooring system can be greatly reduced, the commercial popularization is undoubtedly facilitated.
In summary, in order to obtain the excellent stability and motion performance of the column foundation and the semi-submersible foundation and the design form of the mooring system with wider adaptability at the same time and meet the requirement of transition from shallow water depth to medium or deep water to a certain extent, it is important to invent a novel floating foundation.
Disclosure of Invention
The invention aims to provide a novel column type fan foundation structure form which can be suitable for being used in a range from a medium water depth to a deep water depth.
In order to achieve the above object, the present invention provides a floating type wind turbine foundation, comprising: the device comprises an upright post sleeve, a support upright post, a plurality of side upright posts, a telescopic cross brace structure, a tubular connecting piece and a bottom soft cabin structure;
the upright post sleeve, the support upright post and the bottom soft cabin structure are rigidly connected in sequence from top to bottom; the upright post sleeve is used for supporting a fan tower, and the supporting upright post has a telescopic structure which can be stretched in the vertical direction;
the side upright posts are symmetrically arranged around the supporting upright post;
the telescopic cross brace structure is connected between two adjacent side upright columns and can be stretched in the horizontal direction;
the tubular connectors comprise a first tubular connector and a second tubular connector; the both ends of first tubulose connecting piece respectively with side stand upper end with the stand sleeve is articulated, the both ends of second tubulose connecting piece respectively with side stand lower extreme with the soft cabin structure in bottom is articulated, makes the support post is in when the vertical direction is tensile/compressed, scalable stull structure is in compress/stretch in the horizontal direction.
Preferably, the upright sleeve and the support upright are both cylinders, and the diameter of the support upright is smaller than that of the upright sleeve.
Preferably, the column sleeve comprises an inner sleeve and an outer sleeve, and a plurality of rows of linked ball bearings are arranged between the inner sleeve and the outer sleeve to enable the inner sleeve and the outer sleeve to rotate mutually; the inner sleeve is rigidly connected to the support post.
Preferably, the support post includes inside stand and outside stand, inside stand cover is located in the outside stand, inside stand with be equipped with multiunit hydraulic pressure hoop calliper between the outside stand, make inside stand with outside stand can relative movement in the vertical direction, realize the flexible of support post, and enable inside stand with outside stand locks on the optional position.
Preferably, it comprises: at least three of the side posts.
Preferably, the interior of the bottom soft cabin structure is divided into a plurality of cabins for placing ballast.
Preferably, when the included angle between the tubular connecting piece and the side upright is 90 degrees, the height of the supporting upright is the same as that of the side upright.
Preferably, the tubular connecting piece and the side upright post can hover at any angle between 90-180 degrees.
Preferably, the tubular connecting piece is hinged with the upright column sleeve, the side upright column and the bottom soft cabin structure through hinged supports.
The invention has the beneficial effects that:
the multi-upright-column SAPR foundation realizes variable span between the side upright columns mainly through the telescopic function between the inner sleeve and the outer sleeve of the supporting upright column and assisted by the tubular connecting piece at the end part of the side upright column, so that the fan foundation can adjust the rotating radius (rotating inertia) of the structure rotating direction (mainly rolling and pitching) under different fan load working conditions to restrain an overlarge foundation movement corner, thereby improving the fan generating efficiency and reducing the power consumption cost (LCOE). In addition, the invention realizes the wind vane function of a single-point mooring system on the whole through the rotation function between the inner sleeve and the outer sleeve of the upright post sleeve with the large diameter at the top, reduces the structural wave load and improves the wind and power generation efficiency of the wind wheel.
Drawings
Fig. 1 is a schematic view of the connection state of a fan and the basic overall structure of the present invention.
Fig. 2 is a schematic structural view of the pillar sleeve of the present invention.
Fig. 3-1 is a top view of the position of a mooring line of the present invention.
Fig. 3-2 is a front view of the position of a mooring line of the present invention.
Fig. 4 is a schematic structural view of the support column of the present invention.
FIG. 5 is a schematic view of a hydraulic ring caliper of the present invention.
Fig. 6 is a schematic structural diagram of a multi-column (including support columns and side columns) of the present invention.
Fig. 7 is a schematic structural view of the side pillar of the present invention when the span is maximum.
Fig. 8 is a schematic structural view of the present invention when the side pillar span is minimum.
Fig. 9 is a schematic view of the hinge structure of the side pillar of the present invention.
1-column sleeve, 11-inner sleeve, 12-outer sleeve, 13-ball bearing, 2-support column, 21-inner column, 22-outer column, 23-hydraulic hoop caliper, 3-side column, 4-tubular connecting piece, 41-first tubular connecting piece, 42-second tubular connecting piece, 43-hinged support, 5-telescopic cross brace structure, 6-bottom soft cabin structure, and 7-mooring cable.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be a mechanical connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1, the present invention provides a variable column span SPAR type single point floating fan foundation, including: the flexible support structure comprises an upright post sleeve 1, a support upright post 2, a plurality of side upright posts 3, a tubular connecting piece 4, a telescopic cross brace structure 5 and a bottom soft cabin structure 6. Stand sleeve 1, support post 2 and the soft cabin structure 6 in bottom are rigid connection in proper order from top to bottom, 3 symmetrical arrangement of side stand are in around the support post 2, tubular connecting piece 4 is used for connecting the side stand 3 with stand sleeve 1 and the soft cabin structure 6 in bottom. The tubular connection element 4 comprises a first tubular connection element 41 and a second tubular connection element 42; the both ends of first tubular connecting piece 41 respectively with the side column 3 upper end with the stand sleeve 1 is articulated, the both ends of second tubular connecting piece 42 respectively with the side column 3 lower extreme with the soft cabin structure 6 in bottom is articulated, makes the support post 2 is in when the vertical direction is tensile/compression, scalable stull structure 5 is in compression/tensile in the horizontal direction.
As shown in FIG. 2, the upright post sleeve 1 is a large-diameter cylindrical structure, and plays a role in bearing the weight of a tower and a fan. The upright post sleeve 1 comprises an inner sleeve 11 and an outer sleeve 12, wherein the support upright post 2 is rigidly connected with the inner sleeve 11, and the wind turbine tower is rigidly connected with the outer sleeve 12. A plurality of rows of linkage ball bearings 13 are arranged between the inner sleeve 11 and the outer sleeve 12, so that the inner sleeve 11 and the outer sleeve 12 can rotate mutually, the base structure has a function (wind vane effect) similar to single-point mooring on the whole, namely, a fan drives the outer sleeve 12 to realize a wind alignment function, and the inner sleeve 11 and other structures at the lower part realize a limiting function in a yawing direction (RZ direction). The inner sleeve 11 is also used for connecting distributed mooring lines. As shown in fig. 3-1 and 3-2, the mooring lines are suspended from the inner sleeve in a vertical direction to provide yaw restraint for the inner sleeve and its substructure.
As shown in fig. 4, the support column 2 is a cylinder with a diameter smaller than the diameter of the column sleeve 1. The supporting upright post 2 has a telescopic structure, realizes the telescopic function of the central supporting upright post, and improves the water depth adaptability within a limited range. The support post 2 comprises an inner post 21 and an outer post 22. As shown in fig. 5, a plurality of sets of hydraulic ring calipers 23 are arranged between the inner column 21 and the outer column 22, so that the inner column 21 and the outer column 22 can move relatively in the vertical direction, the support column 2 can be extended and retracted, and the inner column 21 and the outer column 22 can be locked at any position.
As shown in fig. 6, the side columns 3 are symmetrically arranged around the support column 2, and there are at least three side columns 3; preferably, there are four side uprights 3. Adjacent two pass through between the side column 3 scalable stull structure 5 is connected, plays right the support and the additional strengthening of side column 3, scalable stull structure 5 can stretch out and draw back in the horizontal direction. Preferably, the telescopic cross brace structure 5 is provided with two rows, the diameter of which is smaller than that of the side uprights 3.
As shown in fig. 7 and 8, the upper end and the lower end of the side upright 3 are respectively hinged with a tubular connecting piece 4, and a tubular connecting piece 41 hinged at the upper end of the side upright 3 is hinged with the upright sleeve 1; the tubular connecting piece 42 hinged to the lower end of the side upright 3 is hinged to the bottom soft capsule structure 6. When there are four side columns 3, four sets of two tubular connecting members 4 are provided. Preferably, the tubular connecting member 4 is an articulated circular tube, the diameter of which is smaller than that of the side upright 3. The hinged round tubes are nested in the side upright posts 3. As shown in fig. 7, when the included angle between the tubular connecting member 4 and the side column 3 is 90 °, the height of the support column 2 is the same as that of the side column 3. At this time, the span of the side pillars 3 is the largest, and the tubular connection member 4 is horizontally arranged. The larger the span of the side upright post 3 is, the larger the turning radius of the structure is, and under the condition of the same water displacement, the larger the moment of inertia of the side upright post in the rolling (RY direction) and pitching (RX direction) directions is, so that the deflection angle of the side upright post is smaller for the same load working condition, and the improvement of the power generation efficiency of the fan is facilitated. As shown in fig. 8, when the included angle between the tubular connecting member 4 and the side column 3 is 180 °, the span of the side column 3 is the smallest, and the tubular connecting member 4 is vertically arranged. As shown in fig. 9, the tubular connecting member 4 is hinged to the column sleeve 1, the side column 3 and the bottom soft cabin structure 6 through a hinged support 43, and the tubular connecting member 4 and the side column 3 can hover at any angle between 90 ° and 180 ° by the hinged support 43 in cooperation with the telescopic structure of the support column 2, so that the increase and decrease functions of the lateral span of the side column are realized, and the stability of the structure under different fan load conditions can be adjusted by the increase and decrease functions of the lateral span between the side columns.
Example (b):
the top of the fan foundation structure is a large-diameter upright sleeve with the diameter of about 20m, the height of about 15m, the freeboard of 5m, the water penetration depth of about 10m and the weight of the fan and the tower of about 900-1000 t. The height of the outer sleeve of the support column is about 30m, the diameter of the outer sleeve is about 8m, the diameter of the inner sleeve is smaller than that of the outer column, the difference between the diameter of the inner sleeve and the diameter of the outer column is kept about 0.5m, and the height of the inner sleeve after the inner sleeve is fully extended (when the span of the side column is minimum) can reach 45 m. The diameter of the cross section of each of the four side columns is about 4m, the height of each side column is the same as that of the sleeve outside the central support column, telescopic cross-support structures (two rows in total) are arranged on the four side columns at equal intervals, the cross section of each side column is circular, the diameter of each side column is about 1m, a bottom soft cabin structure with the height of about 5m and the diameter of about 20m is arranged at the bottom of each support column, a certain number of cabins can be separated in the bottom soft cabin structure, and ballast (such as liquid. Play the articulated pipe that makes its stand sleeve and the soft cabin structure interconnect in bottom with the top major diameter at the side column tip, its diameter is 1 ~ 2m, these articulated pipe and side column, the stand sleeve and the soft cabin structure in bottom of top major diameter all carry out nested connection through the articulated type of each other, under two kinds of extreme conditions (the biggest and minimum span of side column), the articulated pipe that corresponds is horizontal and vertical arrangement, through the locking function of the hydraulic pressure hoop calliper structure between the inside and outside sleeve of support post, can realize the articulated pipe at 90 (level) and 180 (vertical) arbitrary conversion between the angle, the corresponding continuity of realizing the horizontal span changes.
When the hinged circular pipe changes between an angle of 90 degrees (horizontal) and an angle of 180 degrees (vertical), the height of the structure immersed in water corresponding to the foundation changes between 45-60 m, so that the foundation structure can be suitable for water depth of more than or equal to 45m, and the requirements of covering a transition water depth range and a medium-depth water range can be basically met.
In conclusion, the invention provides a variable upright span SPAR type single-point floating fan foundation, wherein the side upright posts are connected with the upright post sleeves and the bottom soft cabin structure through the hinged circular tubes with small cross sections, and the hinged circular tubes can be suspended at any angle from 0 degree to 90 degrees by matching with the telescopic and locking functions between the inner upright post and the outer upright post of the supporting upright post, so that the fan foundation can be transited from shallow water depth to medium or even deep water; and the fan foundation can adjust the turning radius (rotational inertia) of the structure rotation direction (mainly rolling and pitching) under different fan load working conditions to restrain an overlarge foundation movement corner, so that the generating efficiency of the fan is improved, and the electricity consumption cost (LCOE) is reduced. Through the rotation function between the inner cylinder and the outer cylinder of the top upright post sleeve, the wind vane function of a single-point mooring system is integrally realized, and the wind wheel pair wind and power generation efficiency can be improved while the structural wave load is reduced.
While the present invention has been described in detail with reference to the preferred embodiments, it should be understood that the above description should not be taken as limiting the invention. Various modifications and alterations to this invention will become apparent to those skilled in the art upon reading the foregoing description. Accordingly, the scope of the invention should be determined from the following claims.
Claims (9)
1. A floating fan foundation, comprising: the device comprises an upright post sleeve, a support upright post, a plurality of side upright posts, a telescopic cross brace structure, a tubular connecting piece and a bottom soft cabin structure;
the upright post sleeve, the support upright post and the bottom soft cabin structure are rigidly connected in sequence from top to bottom; the upright post sleeve is used for supporting a fan tower, and the supporting upright post has a telescopic structure which can be stretched in the vertical direction;
the side upright posts are symmetrically arranged around the supporting upright post;
the telescopic cross brace structure is connected between two adjacent side upright columns and can be stretched in the horizontal direction;
the tubular connectors comprise a first tubular connector and a second tubular connector; the both ends of first tubulose connecting piece respectively with side stand upper end with the stand sleeve is articulated, the both ends of second tubulose connecting piece respectively with side stand lower extreme with the soft cabin structure in bottom is articulated, makes the support post is in when the vertical direction is tensile/compressed, scalable stull structure is in compress/stretch in the horizontal direction.
2. A floating wind turbine foundation according to claim 1 wherein said column sleeves and said support columns are cylindrical, and wherein the diameter of said support columns is less than the diameter of said column sleeves.
3. A floating wind turbine foundation according to claim 1 wherein said column sleeves include inner and outer sleeves with rows of cooperating ball bearings disposed therebetween to permit rotation of said inner and outer sleeves relative to one another; the inner sleeve is rigidly connected to the support post.
4. The floating fan foundation of claim 1 wherein the support columns comprise inner columns and outer columns, the inner columns are sleeved in the outer columns, and a plurality of sets of hydraulic annular calipers are arranged between the inner columns and the outer columns to enable the inner columns and the outer columns to move in the vertical direction relatively, so that the support columns can extend and retract, and the inner columns and the outer columns can be locked at any position.
5. A floating wind turbine foundation according to claim 1 including: at least three of the side posts.
6. A floating wind turbine foundation according to claim 1 wherein said bottom soft deck structure is divided into compartments for ballast.
7. A floating wind turbine foundation according to claim 1 wherein the height of said support columns is the same as the height of said side columns when the angle between said tubular connectors and said side columns is 90 °.
8. A floating wind turbine foundation according to claim 1 wherein said tubular connectors and said side columns are capable of hovering at any angle between 90 ° and 180 °.
9. A floating wind turbine foundation according to claim 1 wherein said tubular connectors are hingedly connected to said column sleeves, said side columns and said bottom soft hull structure by hinged supports.
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| CN202011238449.3A CN112943545B (en) | 2020-11-09 | 2020-11-09 | Floating type fan foundation |
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| CN202011238449.3A CN112943545B (en) | 2020-11-09 | 2020-11-09 | Floating type fan foundation |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113653603A (en) * | 2021-09-06 | 2021-11-16 | 中国华能集团清洁能源技术研究院有限公司 | Double-wind-wheel automatic yaw power generation system and yaw control method thereof |
| CN113738590A (en) * | 2021-09-07 | 2021-12-03 | 上海电气风电集团股份有限公司 | Marine general type fan power generation system |
| CN116001997A (en) * | 2022-11-25 | 2023-04-25 | 中交第四航务工程勘察设计院有限公司 | Steel pontoon-reinforced concrete box combined floating wind power system and installation method thereof |
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| CN116001997A (en) * | 2022-11-25 | 2023-04-25 | 中交第四航务工程勘察设计院有限公司 | Steel pontoon-reinforced concrete box combined floating wind power system and installation method thereof |
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