CN115258071B - Diversion type offshore wind power generation platform and offshore wind power generation system - Google Patents
Diversion type offshore wind power generation platform and offshore wind power generation system Download PDFInfo
- Publication number
- CN115258071B CN115258071B CN202210831465.6A CN202210831465A CN115258071B CN 115258071 B CN115258071 B CN 115258071B CN 202210831465 A CN202210831465 A CN 202210831465A CN 115258071 B CN115258071 B CN 115258071B
- Authority
- CN
- China
- Prior art keywords
- guide rail
- wind power
- power generation
- offshore wind
- mooring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000010248 power generation Methods 0.000 title claims abstract description 32
- 238000007667 floating Methods 0.000 claims abstract description 70
- 239000011159 matrix material Substances 0.000 claims abstract description 33
- 230000004044 response Effects 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 35
- 239000013535 sea water Substances 0.000 claims description 3
- 238000009987 spinning Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 235000000981 Brassica parachinensis Nutrition 0.000 description 1
- 241001604868 Brassica rapa var. parachinensis Species 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 230000001808 coupling effect Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
- B63B21/20—Adaptations of chains, ropes, hawsers, or the like, or of parts thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
- B63B21/50—Anchoring arrangements or methods for special vessels, e.g. for floating drilling platforms or dredgers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
- B63B21/20—Adaptations of chains, ropes, hawsers, or the like, or of parts thereof
- B63B2021/203—Mooring cables or ropes, hawsers, or the like; Adaptations thereof
-
- 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
-
- 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
Abstract
The invention belongs to the technical field of offshore wind power, and particularly relates to a diversion type offshore wind power generation platform and an offshore wind power generation system. The diversion type offshore wind power generation platform comprises a floating platform matrix, a diversion device and a mooring system; the plurality of flow guiding devices are symmetrically arranged and are in an annular array and fixedly connected with the lower part of the floating platform matrix; the section of the flow guiding device is streamline, and the longest axis formed by any two points on the periphery of the same section is positioned in the radial direction of the annular array; the mooring system comprises an adjusting system and a mooring anchor rope; the adjusting system is fixedly connected with the floating platform matrix and is in sliding connection with the mooring anchor cable. The diversion type offshore wind power generation platform provided by the invention can rotate according to the wave direction, ensures forward wave inflow, has small hydrodynamic response under complex incoming flow, and has strong stability and small mooring system load.
Description
Technical Field
The invention belongs to the technical field of offshore wind power, and particularly relates to a diversion type offshore wind power generation platform and an offshore wind power generation system.
Background
Offshore wind energy is widely focused in the renewable energy field due to the advantages of large available sea area, high wind speed, small turbulence, close to an energy consumption center and the like. However, as the water depth increases, the cost of the fixed foundation structure will increase substantially, and when the water depth exceeds 50m, the prior art level has difficulty balancing the electrical costs. The floating foundation has the advantages of controllable cost, easy transportation and the like, is suitable for deep open sea development trend, and the floating offshore wind power has been developed into a key growth point of wind power industry development.
Compared with a fixed wind turbine, the floating wind turbine has the advantages that the lower platform can freely move within a certain range, the running environment is worse, and the borne load characteristics are more complex. Because of different operating environments and structural characteristics, the floating wind turbine has the following characteristics compared with the traditional fixed wind turbine: 1) More extreme external environments, 2) hydrodynamic loads such as waves borne by the mooring and other subsystems; 3) The more complex structure of the vibration characteristics is fully coupled rather than linearly responsive. The dynamic stability of the floating wind power under the action of wind-wave-flow multi-field load, especially the dynamic stability of the floating platform under the influence of external load, structural coupling dynamic action and the like is one of the focus problems focused in the current research field. Therefore, the wave resistance of the floating platform is improved, and the working performance and the structural safety of the floating wind turbine under the action of complex wind, wave and current are improved, so that the floating wind turbine is one of the key technical problems for the research personnel in the wind energy field to be solved by the method.
The power performance of the offshore floating wind turbine is improved by comprehensively considering the integral influence of external factors such as wind shear, waves, ocean currents and the like on a structural system, and the directions of incoming wind and incoming water cannot be kept consistent. The motion of each floating wind turbine platform is greatly influenced by the change of the wave incidence angle, the hydrodynamic performance of the platform is optimal under the condition of 0-degree wave incidence angle, and the response amplitude operator can be amplified by nearly hundred times along with the increase of the wave inflow angle. Therefore, the floating wind turbine needs to ensure forward wave inflow and avoid generating excessive lateral wave force. However, at present, there is no technical solution for a floating wind turbine platform capable of maintaining the wave incident angle at about 0 °, and development of a novel floating platform adaptive load reduction technology is needed in the field of floating offshore wind power.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides the diversion type offshore wind power generation platform which can rotate according to the wave direction, ensures forward wave inflow, has small hydrodynamic response when in complex incoming flow, has strong stability and has small load of a mooring system.
Another object of the present invention is to provide an offshore wind power generation system, wherein the diversion type offshore wind power generation platform has the advantages of small response of complex incoming flow and water power, strong stability and small load of a mooring system.
In order to solve the defects in the prior art, the technical scheme provided by the invention is as follows:
a diversion type offshore wind power generation platform comprises a floating platform matrix, a diversion device and a mooring system;
the plurality of flow guiding devices are symmetrically arranged and are in an annular array, and are fixedly connected with the lower part of the floating platform matrix; the cross section of the flow guiding device is streamline, and the longest axis formed by any two points on the periphery of the same cross section is positioned in the radial direction of the annular array;
the mooring system comprises an adjusting system and a mooring anchor rope; the adjusting system is fixedly connected with the floating platform matrix or the diversion device and is in sliding connection with the mooring anchor cable.
Preferably, the flow guiding device is provided with three flow guiding devices.
Preferably, the cross section of the flow guiding device is in an axisymmetric graph, and the symmetry axis is the longest axis.
Preferably, the cross section of the flow guiding device is in an airfoil shape, a spinning cone shape, an elliptic shape or a single elliptic double parabolic streamline shape.
Preferably, the floating platform matrix comprises a central upright post, three water pressing cylinders, three side posts, a plurality of diagonal braces and a plurality of cross braces; the central upright post is fixedly connected with the three side posts through the diagonal braces and the cross braces; the side posts are fixedly connected through a cross brace; the water pressing cylinder is positioned below the side column and fixedly connected with the side column; the water pressing cylinder is fixedly connected with the water pressing cylinder through a transverse support.
Preferably, the upper end surface of the flow guiding device is fixedly connected with the lower end surface of the water pressing cylinder.
Preferably, the adjustment system comprises a circular guide rail and a sliding device; the circular guide rail is fixedly connected with the floating platform base body through a guide rail supporting rod; the sliding device is arc-shaped and is in sliding connection with the circular guide rail; one end of the mooring anchor cable is fixedly connected with the sliding device, and the other end of the mooring anchor cable is fixedly connected with the seabed.
Preferably, a sliding block baffle for limiting the sliding device is further arranged at the joint of the guide rail supporting rod and the circular guide rail; the number of the guide rail supporting rods, the sliding devices and the mooring anchor cables is the same, the guide rail supporting rods are uniformly arranged, and the guide rail supporting rods and the sliding devices are arranged at intervals.
Preferably, the guide rail supporting rods, the sliding devices and the mooring anchor cables are all provided with 3, and the included angle between the guide rail supporting rods is 120 degrees.
An offshore wind power generation system comprises the diversion type offshore wind power generation platform.
The invention has the beneficial effects that:
the annular array flow guiding device provided by the invention can drive the floating platform matrix to rotate when the flow direction is changed, the wind turbine cabin automatically adjusts the position according to the wind direction, so that the generation of excessive lateral wave force is avoided, the wave incidence angle is maintained at about 0 ℃, the hydrodynamic response and the vibration amplitude of the floating platform matrix are effectively reduced, the self-adaptive load reduction is realized, the stability of the floating platform matrix is improved, the mooring anchor cable load is reduced, the performance requirement on a mooring system is reduced, and the cost is reduced.
The invention has the advantages of simple structure, convenient construction and the like, does not need to design a new floating platform, does not need to improve the existing floating platform, can greatly improve the hydrodynamic performance of the floating wind turbine platform by only adding the flow guiding device and the adjusting system, has low cost and is convenient to popularize and use.
According to the mooring system provided by the invention, when the water level suddenly and unevenly descends, the upper end node of the mooring anchor cable is positioned at the similar horizontal height as far as possible in a sliding device moving mode, so that the load of the mooring anchor cable is reduced, the side turning of a floating platform matrix is prevented, the performance requirement on the mooring system is reduced, and the stability of the platform is improved. The sliding devices are far apart, and the sliding block baffle plates are arranged, so that the mooring anchor cable cannot be wound.
Drawings
FIG. 1 is a schematic structural view of a diversion type offshore wind power generation platform provided by the invention;
FIG. 2 is a front view of the diversion type offshore wind power generation platform provided by the invention;
FIG. 3 is a bottom view of the deflector-type offshore wind turbine platform provided by the present invention;
FIG. 4 is a schematic structural view of a mooring system provided by the present invention;
FIG. 5 is a graph comparing the cross-over response amplitude operator of an embodiment with an OC4-deep wind semi-submersible at a wave incidence angle of 90;
FIG. 6 is a graph of example one versus the roll response amplitude operator for an OC4-deep semi-submersible at a wave incidence angle of 90;
the device comprises a 2-flow guiding device, a 3-circular guide rail, a 4-guide rail supporting rod, a 5-sliding device, a 6-mooring anchor cable, 7-side posts, 8-central upright posts, 9-cross braces, 10-diagonal braces and 12-water pressing cylinders.
Detailed Description
The invention is further described below in connection with embodiments. The following embodiments are only for more clearly illustrating the technical aspects of the present invention, and should not be used to limit the scope of the present invention.
The embodiment of the invention provides a diversion type offshore wind power generation platform, which is shown in fig. 1, and comprises a floating platform matrix, a diversion device 2 and a mooring system; the plurality of flow guiding devices 2 are symmetrically arranged and are in an annular array and fixedly connected with the lower part of the floating platform matrix; the cross section of the flow guiding device 2 is streamline, and the longest axis formed by any two points on the periphery of the same cross section is positioned in the radial direction of the annular array; the mooring system comprises an adjustment system and a mooring anchor rope 6; the adjusting system is fixedly connected with the floating platform matrix or the diversion device 2 and is in sliding connection with the mooring anchor rope 6.
When in use, the flow guiding device 2 is submerged in sea water. When the angle of attack exists between the floating platform matrix and the flowing direction of ocean currents, the floating platform matrix is driven to rotate by the load of the guide device which is in an annular array and has a streamline cross section under the impact of the ocean currents, the wind turbine engine room automatically adjusts the position according to the wind direction, waves are enabled to flow in positively, excessive lateral wave force is avoided, hydrodynamic response of the floating platform matrix is effectively reduced, and stability of the floating platform matrix is improved. The floating platform matrix can directly adopt the existing floating platform, such as an OC4-deep semi-submersible platform.
The wind turbine cabin is supported by the tower, the tower is connected with the central upright post, and the tower and the central upright post can be fixedly connected or slidably connected.
In addition, the mooring anchor rope is used as one of special key part systems of the floating wind turbine and plays an important role in controlling the floating wind turbine in a certain physical space. The internal force load of the floating platform under the complex wind-wave-current coupling effect is transmitted and dissipated through the mooring anchor cable, the performance requirement of the traditional floating platform on the mooring anchor cable is higher, and the index has adverse effect on the electricity cost of the floating wind turbine. In the application, when the floating platform matrix rotates, the mooring anchor cable in sliding connection with the floating platform matrix can be kept in place as much as possible through sliding, so that the load of the mooring anchor cable is reduced, and the performance requirement on a mooring system is lowered.
The invention has the advantages of simple structure, convenient construction and the like, does not need to design a new floating platform, does not need to improve the existing floating platform, and can greatly improve the hydrodynamic performance of the floating wind turbine platform by only adding a flow guiding device and an adjusting system.
In an alternative embodiment of the present invention, referring to fig. 1 and 3, the flow guiding devices 2 are provided with three, arranged in a regular triangle. In other embodiments of the present invention, the number of the flow guiding devices may be other, so that the flow guiding devices have the same height and are centrosymmetric, and the flow guiding devices are submerged in sea water, and when an attack angle exists between the floating platform substrate and the flow direction of the ocean current, the floating platform substrate can be driven to rotate.
In an alternative embodiment of the invention, the cross section of the flow guiding device is in an axisymmetric pattern, and the symmetry axis is the longest axis.
In an alternative embodiment of the invention, the cross section of the flow guiding device can be aerofoil, spinning cone, elliptic or single elliptic double-throw streamline and other streamline forms, and can also be aerofoil, spinning cone, elliptic or single elliptic double-throw streamline and other streamline forms which are cut and spliced to form a new streamline form. In the case of an oval, the major axis is located in the radial direction of the annular array. When the device is in a single elliptic double-parabolic streamline shape, the elliptic end is positioned at the outer side.
The cross sections of the guide devices at different heights are not strictly limited, and the cross sections of the single guide device can be in the same shape and size, or in different shapes and sizes, so long as the shapes and sizes of the guide devices are in the same.
In an alternative embodiment of the invention, see fig. 1-3, the floating platform base body is of semi-submersible triangular structure comprising a central upright 8, three water pressure cylinders 12, three side posts 7, a plurality of diagonal braces 10 and a plurality of cross braces 9; the central upright post 8 is fixedly connected with the three side posts 7 through diagonal braces 10 and cross braces 9; the side posts 7 are fixedly connected with the side posts 7 through cross braces 9; the water pressing cylinder 12 is positioned below the side column 7 and is fixedly connected with the side column 7; the water pressing cylinder 12 is fixedly connected with the water pressing cylinder 12 through a transverse support 9.
In an alternative embodiment of the invention, see fig. 1, 2 and 4, the adjustment system comprises a circular guide rail 3 and a sliding device 5; the circular guide rail 3 is positioned below the water pressing cylinder 12 and is fixedly connected with the lower end of the central upright post 8 through the guide rail supporting rod 4; the sliding device 5 is arc-shaped and is in sliding connection with the circular guide rail 3; one end of the mooring anchor rope 6 is fixedly connected with the sliding device 5, and the other end is fixedly connected with the seabed. The joint of the guide rail supporting rod 4 and the circular guide rail 3 is also provided with a slide block baffle for limiting the sliding device 5; the number of the guide rail supporting rods 4, the sliding devices 5 and the mooring anchor cables 6 is the same, the guide rail supporting rods 4 are uniformly arranged, and the guide rail supporting rods 4 and the sliding devices 5 are arranged at intervals. When the water level suddenly and unevenly drops, the circular guide rail of the mooring system forms a certain included angle with the horizontal plane along with the floating platform matrix, at the moment, the sliding device on the higher side of the circular guide rail can slide on the circular guide rail due to the downward pulling force from the mooring anchor cable, the upper end node of the mooring anchor cable is located at the similar horizontal height as much as possible in a moving mode of the sliding device, the load of the mooring anchor cable is further reduced, the floating platform matrix is prevented from rollover, and the performance requirement on the mooring system is reduced, and meanwhile, the stability of the platform is also improved. The sliding devices are far apart, and the sliding block baffle plates are arranged, so that the mooring anchor cable cannot be wound. The invention does not limit the form of the joint of the circular guide rail and the sliding device, and can meet the requirement that the sliding device can relatively slide along the circular guide rail under complex load without separating from the circular guide rail, and the existing slide rail can meet the requirement.
In other embodiments of the present invention, the circular guide rail may be fixed at other positions of the central upright post or connected to other parts of the floating platform base body, or connected to the flow guiding device, so that the circular guide rail is firmly fixed to the floating platform base body, and the sliding device can slide on the circular guide rail to keep the mooring anchor cable in place as much as possible, so as to reduce the load of the mooring anchor cable.
In an alternative embodiment of the invention, the guide rail support bar and the guide rail support bar are further provided with reinforcing ribs for enhancing the connection strength.
In an alternative embodiment of the invention, see fig. 4, the rail support bar 4, the glide means 5 and the mooring lines 6 are all provided with 3, the angle between the rail support bar 4 and the rail support bar 4 being 120 °. In other embodiments of the present invention, the number of rail support rods, the number of skidding devices and the number of mooring lines may be other, for example, 3, 6, and two skidding devices are provided between each two rail support rods.
In an alternative embodiment of the invention, the mooring lines 6 are moored in a catenary or tensioned manner.
In an alternative embodiment of the invention, the mooring lines 6 are catenary wires made of synthetic fibers.
In an alternative embodiment of the invention, see fig. 1 to 3, the upper end surface of the deflector 2 is fixedly connected with the lower end surface of the cartridge 10. In other embodiments of the present invention, the deflector may also be secured to the circular rail first, and secured to the floating platform base via the circular rail. In view of the fact that the fixing of the deflector to the circular guide rail increases the strength requirements for the circular guide rail, it is preferred that the deflector is connected to the cartridge.
In order to prolong the service life of the diversion type offshore wind power generation platform, heavy anti-corrosion coatings are coated on the surfaces of a central upright post, three water pressing cylinders, side posts, inclined struts, cross struts, diversion devices, guide rail supporting rods, circular guide rails, sliding devices, mooring anchor cables and the like.
The embodiment of the invention also provides an offshore wind power generation system which comprises the diversion type offshore wind power generation platform.
Example 1
A diversion type offshore wind power generation platform, see fig. 1-4, comprises a floating platform base body, a diversion device 2 and a mooring system.
The floating platform matrix is of a semi-submersible type triangle structure, has the same shape and parameters as the OC4-deep semi-submersible type platform, and comprises a central upright post 8, three water pressing cylinders 12, three side posts 7, three diagonal braces 10 and 9 cross braces 9; the central upright post 8 is fixedly connected with the three side posts 7 through diagonal braces 10 and cross braces 9; the side posts 7 are fixedly connected with the side posts 7 through cross braces 9; the water pressing cylinder 12 is positioned below the side column 7 and is fixedly connected with the side column 7; the water pressing cylinder 12 is fixedly connected with the water pressing cylinder 12 through a transverse support 9. The diameter of the side column is 12m, the draft is 20m, the diameter of the central column is 6.5m, the diameter of the water pressing cylinder is 24m, the height of the water pressing cylinder is 6m, the diameters of the transverse support and the inclined support are 1.6m, and the spacing between the side columns is 50m.
The three flow guiding devices 2 are arranged in an annular array and are arranged in a regular triangle. The cross section of the flow guiding device 2 is in a spinning cone shape, and the long axis is positioned in the radial direction of the annular array. The upper end surface of the flow guiding device 2 is fixedly connected with the lower end surface of the water pressing cylinder 10. The periphery of the cross section of the flow guiding device is formed by splicing two sections of arcs on an ellipse with the length of a long shaft of 12.5m and the length of a short shaft of 7.5m, a line segment taking the middle point of the two sections of arcs as an endpoint is the short shaft of the ellipse, and the length of the finally spliced cross section is 12m and the width is 5.5m. The flow guiding device is 18m high and the draft is 30m. The flow guiding devices are arranged in a triangular array mode.
The mooring system comprises mooring anchor cables 6, a circular guide rail 3 and a sliding device 5; the circular guide rail 3 is positioned below the water pressing cylinder 12 and is fixedly connected with the central upright post 8 through the guide rail supporting rod 4, and the diameter of the circular guide rail is 56 meters; the sliding device 5 is arc-shaped and is in sliding connection with the circular guide rail 3, and the upper end of the sliding device 5 is close to the lower end face of the water pressing cylinder 6 but is not contacted with the lower end face of the water pressing cylinder 6; one end of the mooring anchor rope 6 is fixedly connected with the sliding device 5, and the other end is fixedly connected with the seabed. A sliding block baffle for limiting the sliding device 5 is arranged at the joint of the guide rail supporting rod 4 and the circular guide rail 3; the guide rail support rods 4, the sliding devices 5 and the mooring anchor cables 6 are all provided with 3, the guide rail support rods 4 are uniformly arranged, and the guide rail support rods 4 and the sliding devices 5 are arranged at intervals. The included angle between the guide rail supporting rod 4 and the guide rail supporting rod 4 is 120 degrees, and the diameter of the guide rail supporting rod is 1.5m.
A5 MW horizontal axis wind turbine cabin with an automatic deviation system is selected and fixed on the central upright post through a tower.
The hydrodynamic performance of the diversion type offshore wind power generation platform of the first embodiment is researched by establishing a hydrodynamic model based on Morison equation and potential flow theory and a dynamic mooring model based on a centralized mass method through AQWA, and detailed details refer to literature: cai Xin, zhang Hongjian, wang Hao, xie Jiaojie, wang Asia, research on hydrodynamic performance of novel offshore wind turbine floating platform facing deep open sea [ J/OL ]. Chinese motor engineering school report.
Parameters of the diversion type offshore wind power generation platform according to the first embodiment related to the simulation calculation are shown in table 1.
Table 1 floating platform parameters according to an embodiment of the present invention
Other parameters such as the wind turbine parameters and the characteristic parameters of the environmental conditions involved in calculation are the same as those in the above documents and will not be described in detail.
Fig. 5 and 6 are respectively a cross-over response amplitude operator comparison graph and a cross-over response amplitude operator comparison graph of the OC 4-deepwind semisubmersible platform at a 90 ° wave incident angle, wherein the cross-over response amplitude operator and the cross-over response amplitude operator data of the OC 4-deepwind semisubmersible platform at a 90 ° wave incident angle are cited in the above documents. It can be obviously seen that compared with the traditional OC4-deep wind semi-submersible platform, the diversion type offshore wind power generation platform provided by the application has the advantages that the hydrodynamic response of the floating platform matrix can be greatly reduced by adding the simple measure of the diversion device and combining a mooring system, the self-adaptive load shedding is realized, and the technical effect that the wave incidence angle is maintained at about 0 degrees is achieved.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and variations could be made by those skilled in the art without departing from the technical principles of the present invention, and such modifications and variations should also be regarded as being within the scope of the invention.
Claims (5)
1. The diversion type offshore wind power generation platform is characterized by comprising a floating platform matrix, a diversion device (2) and a mooring system;
the floating platform matrix comprises a central upright post (8), three water pressing cylinders (12), three side posts (7), a plurality of diagonal braces (10) and a plurality of cross braces (9); the center upright post (8) is fixedly connected with the three side posts (7) through the diagonal braces (10) and the transverse braces (9); the side posts (7) are fixedly connected with each other through transverse struts (9); the water pressing cylinder (12) is positioned below the side column (7) and is fixedly connected with the side column (7); the water pressing cylinder (12) is fixedly connected with the water pressing cylinder (12) through a transverse support (9);
the plurality of the diversion devices (2) are symmetrically arranged and are in an annular array, the diversion devices are submerged in seawater, and the upper end face of each diversion device (2) is fixedly connected with the lower end face of the corresponding water pressing cylinder (12); the cross section of the flow guiding device (2) is streamline, and the longest axis formed by any two points on the periphery of the same cross section is positioned in the radial direction of the annular array; when the angle of attack exists between the floating platform matrix and the flowing direction of ocean currents, under the impact of the ocean currents, the load borne by the guide device which is in an annular array and has a streamline cross section drives the floating platform matrix to rotate, the wind turbine nacelle automatically adjusts the position according to the wind direction, waves are enabled to flow in forward, excessive lateral wave force is avoided, hydrodynamic response of the floating platform matrix is reduced, and stability of the floating platform matrix is improved;
the mooring system comprises an adjustment system and a mooring anchor line (6); the adjusting system comprises a circular guide rail (3) and a sliding device (5); the circular guide rail (3) is positioned below the water pressing cylinder (12) and is fixedly connected with the lower end of the central upright post (8) through the guide rail supporting rod (4); the sliding device (5) is arc-shaped and is in sliding connection with the circular guide rail (3); the guide rail supporting rods (4) are uniformly arranged, and the guide rail supporting rods (4) and the sliding device (5) are arranged at intervals; one end of the mooring anchor cable (6) is fixedly connected with the sliding device (5), and the other end of the mooring anchor cable is fixedly connected with the seabed; the connecting part of the guide rail supporting rod (4) and the circular guide rail (3) is also provided with a sliding block baffle for limiting the sliding device (5); the guide rail supporting rods (4), the sliding devices (5) and the mooring anchor cables (6) are all provided with 3, and the included angle between the guide rail supporting rods (4) and the guide rail supporting rods (4) is 120 degrees; when the water level suddenly and unevenly drops, the circular guide rail (3) of the mooring system forms an included angle with the horizontal plane along with the floating platform matrix, at the moment, the sliding device (5) on the higher side of the circular guide rail (3) slides on the circular guide rail due to the downward pulling force from the mooring anchor cable (6), the horizontal height of the upper end node of the mooring anchor cable is enabled to be close in a moving mode of the sliding device (5), the load of the mooring anchor cable (6) is further reduced, rollover of the floating platform matrix is prevented, and the performance requirement on the mooring system is reduced, and meanwhile, the stability of the platform is also improved.
2. A deflector-type offshore wind power generation platform according to claim 1, characterized in that the deflector (2) is provided with three.
3. A deflector-type offshore wind power generation platform according to claim 1, characterized in that the deflector (2) has an axisymmetric pattern in cross section, the axis of symmetry being the longest axis.
4. A deflector-type offshore wind power generation platform according to claim 1, wherein the deflector (2) has an airfoil-shaped, cone-shaped or oval cross section.
5. An offshore wind power generation system comprising a diversion offshore wind power generation platform according to any of claims 1-4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210831465.6A CN115258071B (en) | 2022-07-15 | 2022-07-15 | Diversion type offshore wind power generation platform and offshore wind power generation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210831465.6A CN115258071B (en) | 2022-07-15 | 2022-07-15 | Diversion type offshore wind power generation platform and offshore wind power generation system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115258071A CN115258071A (en) | 2022-11-01 |
| CN115258071B true CN115258071B (en) | 2023-12-19 |
Family
ID=83764846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210831465.6A Active CN115258071B (en) | 2022-07-15 | 2022-07-15 | Diversion type offshore wind power generation platform and offshore wind power generation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115258071B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116215752B (en) * | 2023-02-15 | 2023-09-22 | 江苏科技大学 | Mooring system for offshore wind and solar same-field floating power generation platform |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120099891A (en) * | 2011-03-02 | 2012-09-12 | 한국해양연구원 | Apparatus for reducing drag of offshore wind power system |
| CN108163158A (en) * | 2018-01-08 | 2018-06-15 | 上海交通大学 | A kind of extension type heave plate water conservancy diversion closure assembly |
| KR101956032B1 (en) * | 2018-03-26 | 2019-03-08 | 알렌 주식회사 | Offshore wind power equipment of floating type |
| CN111236288A (en) * | 2020-01-15 | 2020-06-05 | 武汉工程大学 | Be applied to marine wind power's single pile mechanism |
| CN215553999U (en) * | 2021-08-04 | 2022-01-18 | 中国华能集团清洁能源技术研究院有限公司 | Semi-submersible floating type fan system capable of reducing load |
| CN114162263A (en) * | 2021-12-17 | 2022-03-11 | 浙江大学 | Floating type wind turbine mooring system based on active control and control method |
| CN114673635A (en) * | 2022-03-31 | 2022-06-28 | 宁波爱思信息技术有限公司 | Floating offshore leeward wind turbine group |
-
2022
- 2022-07-15 CN CN202210831465.6A patent/CN115258071B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120099891A (en) * | 2011-03-02 | 2012-09-12 | 한국해양연구원 | Apparatus for reducing drag of offshore wind power system |
| CN108163158A (en) * | 2018-01-08 | 2018-06-15 | 上海交通大学 | A kind of extension type heave plate water conservancy diversion closure assembly |
| KR101956032B1 (en) * | 2018-03-26 | 2019-03-08 | 알렌 주식회사 | Offshore wind power equipment of floating type |
| CN111236288A (en) * | 2020-01-15 | 2020-06-05 | 武汉工程大学 | Be applied to marine wind power's single pile mechanism |
| CN215553999U (en) * | 2021-08-04 | 2022-01-18 | 中国华能集团清洁能源技术研究院有限公司 | Semi-submersible floating type fan system capable of reducing load |
| CN114162263A (en) * | 2021-12-17 | 2022-03-11 | 浙江大学 | Floating type wind turbine mooring system based on active control and control method |
| CN114673635A (en) * | 2022-03-31 | 2022-06-28 | 宁波爱思信息技术有限公司 | Floating offshore leeward wind turbine group |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115258071A (en) | 2022-11-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102362068B (en) | Offshore wind park | |
| US9003631B2 (en) | Power generation assemblies and apparatus | |
| US7293960B2 (en) | Power generation assemblies, and apparatus for use therewith | |
| WO2018095304A1 (en) | Movable ballast leveling control device for use in floating wind turbine | |
| KR102225643B1 (en) | Floating wind turbine structure | |
| CN208416796U (en) | A kind of four columns band ballast semi-submersible type floating blower foundation | |
| CN108757336A (en) | A kind of four columns band ballast semi-submersible type floating blower foundation | |
| US8578586B2 (en) | Power generation assemblies, and apparatus for use therewith | |
| CN115258071B (en) | Diversion type offshore wind power generation platform and offshore wind power generation system | |
| WO2010037335A1 (en) | Sailboat typed above-water wind power generator | |
| CN109404212A (en) | A kind of tidal current energy generating system using guiding device | |
| CN211874639U (en) | Double-wind-wheel floating type offshore wind power generation device capable of passively yawing | |
| JP2014218958A (en) | Floating structure for ocean wind power generation | |
| JP2023533876A (en) | Floating wind turbine equipment | |
| CN112539140A (en) | Soft rigid arm moored multi-fan floating system | |
| CN103133249A (en) | Floating support device and wind generating set | |
| JP2021504621A (en) | Power unit that increases the utilization efficiency of low flow fluid | |
| CN109941396B (en) | Branching mooring line type fan mooring system and offshore wind power generation equipment | |
| WO2019190387A1 (en) | A floating vertical axis wind turbine with peripheral water turbine assemblies and a method of operating such | |
| CN111997841B (en) | Floating type fan generator set | |
| CN115263662A (en) | Multi-rotor vertical shaft fan with rotatable support frame | |
| CN214533359U (en) | Storm coupling utilization device based on floating type platform | |
| CN103925171A (en) | Heavy-draught multi-column floating foundation of offshore wind turbine | |
| RU2722760C1 (en) | Sailing power plant converting flow energy of two media | |
| CN113915070A (en) | Beam type offshore floating wind turbine power generation system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |