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CN-117189496-B - Floating support foundation, wind generating set and control method

CN117189496BCN 117189496 BCN117189496 BCN 117189496BCN-117189496-B

Abstract

The invention relates to a floating support foundation, a wind generating set and a control method, wherein the floating support foundation comprises a floating main body, wherein the floating main body comprises n floating upright posts which are arranged at intervals by taking a first axis as a center and a connecting body connected between two adjacent floating upright posts, n is more than or equal to 3, the n floating upright posts comprise a first floating upright post and n-1 second floating upright posts, the first floating upright posts are used for supporting a tower, each second floating upright post is connected with a stabilizing device, the stabilizing device comprises a driving piece, a first impeller and a base connected with the second floating upright posts, the base is provided with an inner cavity, a first opening and a second opening which are communicated with the inner cavity, the first opening, the inner cavity and the second opening form a circulating channel of seawater, the first impeller is arranged in the inner cavity, and the driving piece drives the first impeller to rotate and drives the seawater to flow in the circulating channel so as to adjust the second floating upright posts connected with the stabilizing device to float or sink. The invention has simple structure and relatively low cost.

Inventors

  • ZHAI ENDI
  • GAO YANG
  • MA SHENGJUN

Assignees

  • 金风科技股份有限公司
  • 浙江金风科技有限公司

Dates

Publication Date
20260512
Application Date
20230630

Claims (18)

  1. 1. A floating support foundation capable of being disposed in sea water and for supporting a tower, the floating support foundation comprising: The floating main body comprises n floating upright posts which are arranged at intervals by taking a first axis as a center and a connecting body connected between every two adjacent floating upright posts, wherein n is more than or equal to 3, n floating upright posts comprise a first floating upright post and n-1 second floating upright posts, and the first floating upright posts are used for connecting and supporting the tower; The stabilizing device is connected to each second floating upright post and comprises a driving piece, a first impeller and a base connected with the second floating upright post, the base is provided with an inner cavity, a first opening and a second opening, the first opening and the inner cavity are communicated with the inner cavity, the second opening forms a circulating channel of seawater, the first impeller is arranged in the inner cavity, and the driving piece drives the first impeller to rotate and drive the seawater to flow in the circulating channel so as to adjust the second floating upright post connected with the stabilizing device to float upwards or sink.
  2. 2. The floating support foundation of claim 1 wherein said base is generally cylindrical in shape, said base having an end wall disposed opposite a bottom wall of said second floating post in a first direction and a side wall disposed about said end wall, said end wall and said side wall enclosing to form said cavity, said bottom wall closing said cavity, said first opening being disposed in said end wall and said second opening being disposed in said side wall.
  3. 3. A floating support foundation according to claim 2, wherein the centre line of each floating column is generally regular polygonal in shape, the base of each stabilising means being arranged coaxially with the connected second floating column.
  4. 4. A floating support foundation according to claim 2, wherein the radial dimension of the side walls decreases and then increases in the first direction.
  5. 5. The floating support foundation of claim 1 wherein said drive member comprises a drive motor, a gearbox and a drive shaft, said gearbox having an input connected to the drive motor and an output connected to said drive shaft, said first impeller being connected to said drive shaft.
  6. 6. The floating support foundation of claim 5 wherein said second floating post has a hollow cavity, said drive motor and said gearbox are located within said hollow cavity, said drive shaft is inserted into said second floating post bottom wall and connected to said gearbox output, said drive shaft being in dynamic sealing engagement with said bottom wall.
  7. 7. The floating support foundation of claim 1 wherein said drive member comprises a direct drive motor connected to at least one of the bottom wall of said second floating column and the base and including a rotor and stator in rotational engagement, and a drive shaft coaxially disposed with said direct drive motor and connected to said rotor, said first impeller being connected to said drive shaft.
  8. 8. The floating support foundation of claim 1 wherein said first impeller comprises a first hub and a plurality of first blades and a pitch system, said first hub being connected to said drive member, said plurality of first blades being spaced circumferentially of said first hub and connected to said first hub by said pitch system to adjust the pitch angle of said first blades.
  9. 9. The floating support foundation of claim 1 wherein said stabilizer further comprises a fairing disposed within said interior cavity and connected to said base, said fairing being disposed between said first opening and said first impeller to rectify the flow of said seawater entering through said first opening.
  10. 10. The floating support foundation of claim 9 wherein said fairing comprises a second hub and a plurality of second vanes spaced circumferentially about said second hub and connected thereto, said second vanes being connected to said base at an end thereof facing away from said hub, and wherein a fairing aperture is formed between adjacent two of said second vanes.
  11. 11. A wind turbine generator set, comprising: a floating support foundation according to any one of claims 1 to 10; The fan main body is arranged on the first floating upright post, and comprises a tower connected with the first floating upright post, a cabin arranged on the tower and an impeller arranged on the cabin.
  12. 12. The wind power generation set of claim 11, further comprising a controller configured to: The method comprises the steps of obtaining current power information of a wind generating set, obtaining inclination angle information of a floating support foundation if the current power information continuously exceeds a first threshold value in a preset time period, determining steering information of first impellers of all stabilizing devices according to incoming wind directions when the inclination angle information exceeds a preset range, and controlling driving parts to drive all the first impellers to rotate according to the steering information so as to adjust the inclination angle information of the floating support foundation to be in the preset range.
  13. 13. A method of controlling a wind turbine as claimed in claim 11, comprising: acquiring current power information of a wind generating set; if the current power information continuously exceeds a first threshold value in a preset time period, acquiring inclination angle information of the floating support foundation; when the inclination angle information exceeds a preset range, determining steering information of the first impeller of each stabilizing device according to the incoming wind direction; And controlling the driving piece to drive each first impeller to rotate according to the steering information so as to adjust the inclination angle information of the floating support foundation to be within the preset range.
  14. 14. The control method according to claim 13, characterized in that the steering information includes forward rotation and reverse rotation; When the first impeller of the stabilizing device rotates positively, the stabilizing device provides a floating driving force to the connected second floating upright; When the first impeller of the stabilizer is rotated in the reverse direction, the stabilizer provides a sinking driving force to the connected second floating column.
  15. 15. The control method according to claim 14, wherein the number of the second floating columns is two, and the step of determining the steering information of the first impeller of each of the stabilizing devices according to the incoming wind direction when the inclination angle information exceeds a preset range includes: When the inclination angle information exceeds a preset range, the two stabilizing devices are controlled to synchronously rotate forward, synchronously rotate reversely or one of the stabilizing devices rotates forward and the other stabilizing device rotates reversely according to the included angle between the incoming wind direction and the reference wind direction.
  16. 16. The control method of claim 13, the first impeller comprising a first hub and a plurality of first blades and a pitch system, the plurality of first blades being spaced apart in a circumferential direction of the first hub and connected to the first hub by the pitch system, the method further comprising: Determining at least one of rotational speed information of the first impeller and angle information between the first blades and the first hub according to a difference in height between a draft of each second floating column connected with the stabilizing device and a set water surface line; And controlling the driving piece to drive each first impeller to rotate according to at least one of the rotating speed information and the angle information so as to adjust the inclination angle information of the floating support foundation to be within the preset range.
  17. 17. The control method according to claim 16, wherein a rotation angle a of the first blade with respect to the first hub satisfies 0 ° < a+.90 °, the step of determining at least one of rotational speed information of the first impeller and angle information between the first blade and the first hub from a difference in height between a draft of each second floating column to which the stabilizer is connected and a set water surface line, comprising: When the range of the height difference H is 0<H-H1, the first blade rotates to a=90 degrees relative to the first hub, or the first blade rotates to 50-60 degrees relative to the first hub, and the first impeller rotating speed is 800-1500 rpm; when the range of the height difference H is H1< H2, the first blade rotates to 30 degrees < a < 50 degrees relative to the first hub, and the rotating speed of the first impeller is 1500rpm-2500rpm; When the range of the height difference H is H2< H3, the first blade rotates to 0 degrees < a < 20 degrees relative to the first hub, and the rotating speed of the first impeller is 2500rpm-3500rpm.
  18. 18. The control method according to claim 13, wherein after the step of controlling the driving member to drive each of the first impellers to rotate according to the steering information to adjust the inclination angle information of the floating support base to be within the preset range, the control method further comprises: acquiring current power information of a wind generating set; If the current power information is continuously smaller than a first threshold value in a preset time period, controlling a first impeller in a stabilizing device connected with the floating upright post to act reversely, so that the inclination angle information of the floating support foundation reaches the preset range; Or alternatively Acquiring current power information of a wind generating set; If the current power information is continuously smaller than a first threshold value in a preset time period, reducing the rotating speed of a first impeller in a stabilizing device connected with the second floating upright post; and (3) collecting paddles of the first impeller of each stabilizing device and stopping rotation of the first impeller so as to adjust the floating support foundation to restore to an initial state.

Description

Floating support foundation, wind generating set and control method Technical Field The invention relates to the technical field of wind power, in particular to a floating support foundation, a wind generating set and a control method. Background The realization of continuous boosting double-carbon targets in the wind power industry is currently developing towards single-machine capacity maximization, complete machine light weight, intellectualization, ocean and the like. According to statistics, the accumulated installed quantity of the offshore wind power is increased year by year. With the large-scale development of offshore resources, the development and utilization of deep-open sea resources are attracting attention. Under the status of the property, the floating wind generating set is developed gradually and becomes a power-assisted army of the subsequent offshore wind power. The floating support foundation is used for supporting components such as a tower frame and a cabin of the floating wind power generation unit, when the unit faces wind load, wave load, ocean current load, ice load and the like, from the aspect of overall dynamics, the floating support foundation has all-dimensional six degrees of freedom due to the floating characteristic of the floating wind power generation unit, and under the interweaving coupling effects of external load randomness, unit motion complexity and the like, the integral branching characteristic of the floating wind power generation unit is more complicated, and the motion stability of the floating wind power generation unit is one of the most important indexes for ensuring the continuous, stable, safe and efficient output of the unit and the power generation capacity, so that how to ensure the stability of the floating wind power generation unit is one of the problems to be solved urgently in the wind power field. The floating support foundation in the related art mainly adjusts the overall inclination angle of the floating support foundation by controlling the mutual circulation of fluid among different floating upright posts, so that the stability of the floating wind generating set where the floating support foundation is located is ensured, and the design mode makes the overall structure of the floating support foundation complex and high in cost. Disclosure of Invention The embodiment of the invention provides a floating support foundation, a wind generating set and a control method, wherein the floating support foundation is simple in structure and relatively low in cost. According to the embodiment of the invention, a floating support foundation is provided, which can be arranged in sea water and is used for supporting a tower, and comprises a floating main body, wherein the floating main body comprises n floating upright posts which are arranged at intervals with a first axis as a center and a connecting body connected between every two adjacent floating upright posts, n is more than or equal to 3, the n floating upright posts comprise a first floating upright post and n-1 second floating upright posts, the first floating upright posts are used for connecting and supporting the tower, a stabilizing device is connected to each second floating upright post, the stabilizing device comprises a driving piece, a first impeller and a base connected with the second floating upright post, the base is provided with an inner cavity, a first opening and a second opening which are communicated with the inner cavity, the first opening, the inner cavity and the second opening form a circulation channel of sea water, the first impeller is arranged in the inner cavity, and the driving piece drives the first impeller to rotate and drives sea water to flow in the circulation channel so as to adjust the second floating upright posts connected with the stabilizing device to float or sink. According to one aspect of the embodiment of the invention, the base is cylindrical as a whole, the base is provided with an end wall and a side wall, the end wall is arranged opposite to the bottom wall of the second floating upright post in the first direction, the side wall is arranged around the end wall, the end wall and the side wall enclose to form an inner cavity, the bottom wall is arranged to close the inner cavity, the first opening is arranged on the end wall, and the second opening is arranged on the side wall. According to one aspect of the embodiment of the invention, the central line of each floating column is generally regular polygon, the base of each stabilizing device being coaxially arranged with the connected second floating column. According to one aspect of an embodiment of the invention, the radial dimension of the sidewall decreases and then increases in a first direction. According to one aspect of an embodiment of the invention, the drive member comprises a drive motor, a gearbox and a drive shaft, the gearbox having an input connected to the drive motor and an ou