Anti-rolling control method and anti-rolling system for semi-submersible floating fan platform

Abstract

The invention provides a stabilization control method and system for a semi-submersible floating fan platform, and the method comprises the steps: detecting the attitude parameters of the semi-submersible floating fan platform, judging a vertical column with the maximum rising amount of the semi-submersible floating fan platform, adjusting the water amount in a stabilization water cabin corresponding to the vertical column with the maximum rising amount, and achieving the stabilization of the semi-submersible floating fan platform. The position and angle of the semi-submersible type floating fan platform can be effectively adjusted, the shaking amplitude of the semi-submersible type floating fan platform is remarkably reduced, the semi-submersible type floating fan platform rapidly returns to the stable state, then the stability and the operation efficiency of a fan are improved, the service life of the fan is prolonged, and the semi-submersible type floating fan platform has great significance in improving the reliability and the economical efficiency of an offshore wind plant. And technical support is provided for development and utilization of ocean renewable energy sources.

Description

Technical Field

[0001] The present invention relates to the technical field of wind power generation equipment, and particularly relates to a roll reduction control method and a roll reduction system for a semi-submersible floating wind turbine platform. Background Art

[0002] Among many new energy industries, offshore wind power is highly favored due to its large reserves, non-occupation of cultivated land, and low environmental noise pollution. Offshore wind turbines have various foundation forms. In nearshore waters, offshore wind power mainly uses fixed types. However, the deep sea has better wind resources and less environmental impact. The floating foundation has better economic and technical advantages. The large-scale and deep-sea development of offshore wind turbines is the future development direction of offshore wind power.

[0003] In the power generation operation of deep-sea floating wind turbines, adjusting the floating state of the floating body is a key step. In this process, the floating body resists the action of disturbing torques such as wind, waves, and currents, and uses the restoring torque to improve the safety performance and power generation efficiency of the wind turbine power generation operation. The existing roll reduction devices equipped on floating wind turbines, such as mooring devices and anti-rolling tanks, are used to adjust the attitude of the floating body. Although they can reduce the amplitude of the floating body movement to a certain extent, the effect on adjusting the attitude of the floating body is not very significant.

[0004] Therefore, how to adjust the attitude of the floating body to improve the operation efficiency of the wind turbine is a technical problem that needs to be solved urgently by those skilled in the art. Summary of the Invention

[0005] The purpose of the present invention is to provide a roll reduction control method and a roll reduction system for a semi-submersible floating wind turbine platform that can quickly return the semi-submersible floating wind turbine platform to a stable state.

[0006] The present invention provides a roll reduction control method for a semi-submersible floating wind turbine platform. The semi-submersible floating wind turbine platform includes at least one column and a roll reduction water tank corresponding to the column, and includes:

[0007] Obtain the attitude parameters of the semi-submersible floating wind turbine platform;

[0008] Judge whether the attitude of the semi-submersible floating wind turbine platform is in a preset condition according to the attitude parameters. If not, determine the column with the largest relative sea level rise amount and its phase according to the attitude parameters, and adjust the water volume in the roll reduction water tank corresponding to the column with the largest rise amount so that the attitude of the semi-submersible floating wind turbine platform meets the preset condition.

[0009] By detecting the attitude parameters of the semi-submersible floating wind turbine platform, determining the column with the largest elevation increase of the semi-submersible floating wind turbine platform, and adjusting the water volume in the anti-rolling water tank corresponding to the column with the largest elevation increase, the position and angle of the semi-submersible floating wind turbine platform can be effectively adjusted, the sway amplitude of the semi-submersible floating wind turbine platform can be significantly reduced, the semi-submersible floating wind turbine platform can be quickly restored to a stable state, thereby improving the stability, operation efficiency and service life of the wind turbine, which is of great significance for improving the reliability and economy of offshore wind farms, and also provides technical support for the development and utilization of marine renewable energy.

[0010] In a feasible implementation manner, the specific steps for adjusting the water volume in the anti-rolling water tank corresponding to the column with the largest elevation increase include:

[0011] When the column with the largest elevation increase reaches the lowest point, inject water into the anti-rolling water tank and open the exhaust channel of the anti-rolling water tank.

[0012] In a feasible implementation manner, during the process of the column with the largest elevation increase rising from the lowest point to the highest point, the following steps are also carried out:

[0013] Inject compressed air into the anti-rolling water tank to discharge part of the ballast water in the anti-rolling water tank, so that when the column with the largest elevation increase reaches the highest point, the ballast water line in the anti-rolling water tank is located at the position of the lowest water line.

[0014] In a feasible implementation manner, the attitude parameters include the rotation parameters of the semi-submersible floating wind turbine platform around the x, y, and z axes of the three-axis coordinate system, and the displacement parameters in the x, y, and z directions, and the origin of the three-axis coordinate system is located at the center of the semi-submersible floating wind turbine platform.

[0015] In a feasible implementation manner, while obtaining the attitude parameters of the semi-submersible floating wind turbine platform, the attitude parameters are also stored;

[0016] The column with the largest relative sea level elevation increase is determined by the following method: comprehensively determining all the stored attitude parameters within a predetermined time period, determining the column with the largest relative sea level elevation increase and its phase.

[0017] In addition, the present invention also provides an anti-rolling system for a semi-submersible floating wind turbine platform, including:

[0018] A semi-submersible floating wind turbine platform, including at least one column, and each column has a gas storage chamber inside;

[0019] The anti-rolling tank module includes an anti-rolling water tank, an air injection pipe, and an exhaust pipe. One end of the air injection pipe is connected to the anti-rolling water tank, and an air injection switch valve is provided on the air injection pipe. One end of the exhaust pipe communicates with the anti-rolling water tank, and the other end extends outside the column. An exhaust switch valve is provided on the exhaust pipe. A sea chest is also provided on the cabin wall of the anti-rolling water tank for water to flow into or out of the anti-rolling water tank.

[0020] The air inflation module includes an air compressor for directly or indirectly connecting to the other end of the air injection pipe to inject gas into the anti-rolling water tank.

[0021] The acquisition component is used to acquire the attitude parameters of the semi-submersible floating wind turbine platform.

[0022] The controller is electrically connected to the acquisition component and stores the anti-rolling control method of the semi-submersible floating wind turbine platform as described in any one of the above to control the working states of the air compressor, the air injection switch valve, the exhaust switch valve, and the sea chest.

[0023] In a feasible implementation manner, the anti-rolling water tank communicates with the gas storage tank through the air injection pipe, the air compressor communicates with the gas storage tank through a pipeline, the air compressor is located inside the column, the gas storage tank is located at the top of the column, and is between the gas storage tank and the anti-rolling water tank. The air compressor communicates with the atmosphere outside the column through an air filling pipe.

[0024] In a feasible implementation manner, the anti-rolling tank module further includes a conical air injection nozzle located in the anti-rolling water tank. The end of the air injection pipe away from the gas storage tank is connected to the conical air injection nozzle. The large end face of the conical air injection nozzle faces downward, and a plurality of air outlet holes are provided on the large end face.

[0025] In a feasible implementation manner, the anti-rolling water tank is located inside the column and at the bottom of the column. When the semi-submersible floating wind turbine platform is at the maximum operating inclination angle, the top of the anti-rolling water tank is not higher than the waterline.

[0026] Or / and, a pressure sensor is further installed inside the gas storage tank to detect the internal air pressure of the gas storage tank. When the internal pressure of the gas storage tank is lower than a predetermined value, the controller also controls the air inflation module to inflate the gas storage tank to maintain the internal pressure of the gas storage tank at the predetermined pressure value.

[0027] In a feasible implementation manner, the number of columns is two or more. Each column is fixedly connected through a connecting piece. The gas storage tank, the air inflation module, and the anti-rolling tank module are all provided in each column, and all the gas storage tanks are communicated through a connecting pipe.

[0028] In a feasible implementation manner, the acquisition component includes a vertical acceleration sensor installed on the column, and the vertical acceleration sensor is used to acquire the attitude parameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 FIG. is a schematic structural diagram of a semi-submersible floating wind turbine platform in an embodiment provided by the present invention;

[0030] Figure 2 FIG. is a schematic flowchart of a roll reduction control method for a semi-submersible floating wind turbine platform in an embodiment provided by the present invention;

[0031] Figure 3 FIG. is a schematic flowchart of a roll reduction control method for a semi-submersible floating wind turbine platform in another embodiment provided by the present invention;

[0032] Figure 4 is Figure 1 a schematic structural diagram of a roll reduction tank module in the shown structure;

[0033] Figure 5 is Figure 1 a schematic diagram of the connection of each gas storage tank through a communication pipe in the shown structure;

[0034] Figure 6 is Figure 1 a schematic structural diagram of an inflation module in the shown structure. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0035] The features and exemplary embodiments of various aspects of the present invention will be described in detail below. In order to make the objectives, technical solutions and advantages of the present invention more clear and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0036] Please refer to Figures 1 to 6 , Figure 1 FIG. is a schematic structural diagram of a semi-submersible floating wind turbine platform in an embodiment provided by the present invention; Figure 2 FIG. is a schematic flowchart of a roll reduction control method for a semi-submersible floating wind turbine platform in an embodiment provided by the present invention; Figure 3 FIG. is a schematic flowchart of a roll reduction control method for a semi-submersible floating wind turbine platform in another embodiment provided by the present invention; Figure 4 is Figure 1 a schematic structural diagram of a roll reduction tank module in the shown structure; Figure 5 is Figure 1 a schematic diagram of the connection of each gas storage tank through a communication pipe in the shown structure; Figure 6 is Figure 1 a schematic structural diagram of an inflation module in the shown structure.

[0037] An embodiment of the present invention provides a semi-submersible floating wind turbine platform. The semi-submersible floating wind turbine platform floats on the sea and serves as an installation foundation for an offshore wind turbine, and the offshore wind turbine is fixed to the semi-submersible floating wind turbine platform.

[0038] The semi-submersible floating wind turbine platform includes at least one column 5a. Usually, the number of columns 5a is greater than two. In this article, the number of columns 5a is taken as three as an example to continue introducing the technical solution and technical effect. The three columns 5a can form an equilateral triangle. Those skilled in the art should understand that the number of columns 5a in the present invention can be reasonably selected according to the specific application environment.

[0039] In an embodiment of the present invention, each column 5a has an air storage chamber 2 inside. The air storage chamber 2 is usually located at the top of the column 5a. The column 5a can be a hollow structure, and the air storage chamber 2 is formed by being isolated by a partition inside it. The size and shape of the air storage chamber 2 can be determined according to specific design requirements. The air storage chamber 2 is filled with air to meet the floating requirements of the platform.

[0040] The anti-rolling system of the semi-submersible floating wind turbine platform provided by the embodiment of the present invention further includes an inflation module 3, an anti-rolling tank module 1, an acquisition component, and a controller.

[0041] Among them, the anti-rolling tank module 1 includes an anti-rolling water tank 1a, an air injection pipe 1b, and an exhaust pipe 1c. The inflation module 3 includes an air compressor. The air compressor can be directly or indirectly connected to the air injection pipe 1b to inject gas into the anti-rolling water tank 1a. The air compressor 3a can be installed outside the column 5a. Of course, considering the safety and service life of the equipment, the air compressor 3a can be installed inside the column 5a, and the air inlet pipe 3b of the air compressor can extend to the external environment of the column 5a. The air compressor can be located outside the air storage chamber 2. Of course, it can also be located inside the air storage chamber 2. A specific embodiment in which the air compressor is located outside the air storage chamber 2 is shown in this article.

[0042] In the embodiment of the present invention, the anti-rolling water tank 1a is located inside the column 5a and at the bottom of the column 5a. When the semi-submersible floating wind turbine platform is at the maximum operating tilt angle, the top of the anti-rolling water tank 1a is not higher than the waterline surface, so as to ensure that the anti-rolling water tank 1a can still be below the waterline surface at the maximum operating tilt angle to ensure that ballast water can be injected through the sea chest 1d by relying on gravity. The sea chest 1d is arranged on the side wall of the column 5a, and the total area of the sea chest 1d meets the requirements of drainage and injection speed.

[0043] In the present invention, one end of the air injection pipe 1b is connected to the anti-rolling water tank 1a, and the other end is directly or indirectly connected to the outlet of the air compressor 3a. An air injection switch valve 1e is provided on the air injection pipe 1b for connecting or disconnecting the air injection pipe 1b. One end of the exhaust pipe 1c is communicated with the anti-rolling water tank 1a, and the other end extends outside the column 5a to be capable of communicating with the external environment. Specifically, the exhaust pipe 1c can extend from the top of the column 5a, and the extended section of the exhaust pipe 1c can be a bent pipe structure to prevent external rainwater and the like from flowing into the exhaust pipe 1c. An exhaust switch valve 1g is provided on the exhaust pipe 1c for connecting or disconnecting the exhaust pipe 1c. The air injection switch valve 1e and the exhaust switch valve 1g can both be located inside the column 5a, which can avoid the influence of the external environment on the electronic components, improve the service life of each switch valve, and thus improve the reliability of the system. Each switch valve can be a solenoid valve or an electric valve, and theoretically, the shorter the opening and closing response time of each switch valve, the better. In one embodiment, the opening and closing response time of each switch valve is approximately 1 s.

[0044] In the embodiment of the present invention, a sea chest 1d is further provided on the cabin wall of the anti-rolling water tank 1a for water to flow into or out of the anti-rolling water tank 1a.

[0045] The acquisition component in the present invention is used to acquire the attitude parameters of the semi-submersible floating wind turbine platform; the attitude parameters of the semi-submersible floating wind turbine platform can be the inclination angle of the semi-submersible floating wind turbine platform, and of course, can also be the degree-of-freedom parameters of the semi-submersible floating wind turbine platform in a three-axis coordinate system. For example, the three coordinate axes of the three-axis coordinate system are respectively x, y, and z. x and y can be two perpendicular coordinate axes parallel to the sea level, and z can be the coordinate axis perpendicular to the sea level. The attitude parameters in the present invention can be the rotation parameters of the semi-submersible floating wind turbine platform around x, y, and z, and the displacement parameters in x, y, and z, that is, the 6-degree-of-freedom parameters of the semi-submersible floating wind turbine platform. In this article, the rotation angles around x, y, and z are defined as roll, pitch, and yaw, and the rotation parameters around x, y, and z are defined as heave, sway, and surge. The origin of the three-axis coordinate system is located at the center of the semi-submersible floating wind turbine platform.

[0046] The acquisition component can be a vertical acceleration sensor 4. The vertical acceleration sensor 4 is fixed to the semi-submersible floating wind turbine platform. In a specific embodiment, the vertical acceleration sensor 4 can be fixed to the column 5a. Of course, for the reliability of detection, the number of vertical acceleration sensors 4 can be more than one. The controller determines the attitude parameters of the semi-submersible floating wind turbine platform at this time according to the signals detected by all the vertical acceleration sensors 4. Of course, the acquisition component can further detect environmental parameters, and the control method of the present application can further control the semi-submersible floating wind turbine platform in combination with environmental parameters and attitude parameters, where the environmental parameters include but are not limited to parameters such as wind speed, wave height, and wave current speed.

[0047] Of course, the types of components obtained are not limited to the vertical acceleration sensor 4 described in the present invention, and may also include other components, such as a sensing component provided on the sea surface for specifically detecting wave height, or a wind speed sensor provided on a semi-submersible floating wind turbine platform or a wind turbine, and so on.

[0048] The present invention provides a roll reduction control method for a semi-submersible floating wind turbine platform, including:

[0049] S1. Obtain the attitude parameters and environmental parameters of the semi-submersible floating wind turbine platform;

[0050] In this control method, the attitude parameters can be obtained by the obtaining components described above.

[0051] S2. Determine whether the attitude of the semi-submersible floating wind turbine platform meets a preset condition according to the attitude parameters. If not, execute step S3; if so, execute step S1;

[0052] S3. Determine the column 5a with the largest relative sea level rise amount and its phase according to the attitude parameters, and adjust the water volume in the anti-rolling water tank 1a corresponding to the column 5a with the largest rise amount so that the attitude parameters of the semi-submersible floating wind turbine platform are within a preset range.

[0053] For the sake of simplicity in describing the technical solution, the three columns 5a are respectively defined as the first column 5a1, the second column, and the third column ( Figure 1 the two right-side columns in the second column and the third column), when the controller determines that the first column 5a1 is the column 5a with the largest rise amount according to the attitude parameters, the controller will adjust the water volume in the anti-rolling water tank 1a corresponding to the first column 5a1. Specifically, the controller controls the working states of the air compressor, the air injection switch valve 1e, and the exhaust switch valve 1g of the anti-rolling water tank 1a corresponding to the first column 5a1 to inflate or deflate the anti-rolling water tank 1a corresponding to the first column 5a1, thereby adjusting the water volume in the anti-rolling water tank 1a corresponding to the first column 5a1 and realizing the rapid recovery of the semi-submersible floating wind turbine platform to a stable state.

[0054] By detecting the attitude parameters and environmental parameters of the semi-submersible floating wind turbine platform, determining the column 5a with the largest rise amount of the semi-submersible floating wind turbine platform, and adjusting the water volume in the anti-rolling water tank 1a corresponding to the column 5a with the largest rise amount, the present invention can effectively adjust the position and angle of the semi-submersible floating wind turbine platform, significantly reduce the swaying amplitude of the semi-submersible floating wind turbine platform, enable the semi-submersible floating wind turbine platform to quickly return to a stable state, thereby improving the stability, operation efficiency, and lifespan of the wind turbine, which is of great significance for improving the reliability and economy of offshore wind farms and also provides technical support for the development and utilization of marine renewable energy.

[0055] The above control method is stored inside the controller to control the operating states of the air compressor 3a, the injection switch valve 1e, the exhaust switch valve 1g, and the sea chest 1d.

[0056] In a specific embodiment, for the anti-rolling control method of the semi-submersible floating wind turbine platform provided by the present invention, the specific steps for adjusting the water volume in the anti-rolling water tank 1a corresponding to the column 5a with the largest elevation amount include:

[0057] When the column 5a with the largest elevation amount reaches the lowest point, water is injected into the anti-rolling water tank 1a, and the exhaust passage of the anti-rolling water tank 1a is opened; that is, when the first column 5a reaches the lowest point, the sea chest 1d at the bottom of the anti-rolling water tank 1a of the first column 5a is controlled to open, the injection switch valve 1e is closed, and the exhaust switch valve 1g is opened. In this way, seawater injects ballast water into the interior of the anti-rolling water tank 1a of the first column 5a through the sea chest 1d. The moment generated by the neutral position of the ballast water is opposite to the phase of the restoring moment, thereby achieving the effect of reducing the rising height of the column 5a.

[0058] During the process of the column 5a with the largest elevation amount rising from the lowest point to the highest point, the following control is also carried out: Compressed air is injected into the anti-rolling water tank 1a to discharge part of the ballast water in the anti-rolling water tank 1a, so that when the column 5a with the largest elevation amount reaches the highest point, the water line of the ballast water in the anti-rolling water tank 1a is located at the lowest water line position. That is to say, during the process of the first column 5a rising from the lowest point to the highest point, the sea chest 1d at the bottom of the anti-rolling water tank 1a of the first column 5a is controlled to open, the injection switch valve 1e is closed and then opened, and the exhaust switch valve 1g is closed, and the air compressor is started. The air compressor 3a fills the air into the interior of the air storage tank 2 through the outlet pipe 3c. The air in the air storage tank 2 of the first column 5a enters the anti-rolling water tank 1a at the bottom of the first column 5a along the air injection pipe 1b, and discharges part of the water inside the anti-rolling water tank 1a into the sea. This operation can effectively reduce the descending amplitude of the column 5a and achieve an effective anti-rolling effect.

[0059] In the anti-rolling control method of the semi-submersible wind turbine platform, while obtaining the attitude parameters of the semi-submersible floating wind turbine platform, the attitude parameters are also stored; the column 5a with the largest relative sea level elevation amount is determined by the following method: By comprehensively considering all the stored attitude parameters within a predetermined time period, the column 5a with the largest relative sea level elevation amount and its phase are determined.

[0060] In a specific embodiment, the control method includes:

[0061] S11. While obtaining the attitude parameters of the semi-submersible floating wind turbine platform, store the attitude parameters;

[0062] S12. Determine whether the attitude of the semi-submersible floating wind turbine platform meets the preset conditions according to the attitude parameters. If not, execute step S13; if so, execute step S1. The preset conditions are the attitude conditions of the semi-submersible floating wind turbine platform that meet the stable operation of the wind turbine, and are reasonably determined according to the specific environment.

[0063] S13. Synthesize all the attitude parameters stored within a predetermined time period to determine the column 5a with the largest relative sea level rise amount and its phase.

[0064] S14. When the column 5a with the largest rise amount reaches the lowest point, inject water into the anti-rolling water tank 1a, and open the exhaust passage of the anti-rolling water tank 1a. During the process of the column 5a with the largest rise amount rising from the lowest point to the highest point, inject compressed air into the anti-rolling water tank 1a to discharge part of the ballast water in the anti-rolling water tank 1a, so that when the column 5a with the largest rise amount reaches the highest point, the ballast water line in the anti-rolling water tank 1a is located at the position of the lowest water line.

[0065] S15. Determine whether the attitude of the semi-submersible floating wind turbine platform meets the preset conditions. If not, repeat S14; if so, execute step S11.

[0066] In a specific embodiment, the air compressor 3a of the anti-rolling system of the semi-submersible floating wind turbine platform is located inside the column 5a and is between the air storage tank 2 and the anti-rolling water tank 1a. The air compressor is connected to the external atmosphere of the column 5a through an air charging pipe. This can protect the air compressor from external environment interference to the greatest extent and improve the service life of the air compressor.

[0067] In a specific embodiment, the anti-rolling tank module 1 further includes a conical air injection nozzle 1f, which is located in the anti-rolling water tank 1a. One end of the air injection pipe 1b away from the air storage tank 2 is connected to the conical air injection nozzle 1f. The large end face of the conical air injection nozzle 1f faces downward, and a number of air outlet holes are provided on the large end face. This can relieve the impact of the injected air on the anti-rolling water tank 1a and avoid causing the shaking of the anti-rolling water tank 1a.

[0068] In a specific embodiment, a pressure sensor 2c is further installed inside the air storage tank 2 to detect the internal air pressure of the air storage tank 2. When the internal pressure of the air storage tank 2 is lower than the predetermined value, the controller also controls the inflation module 3 to inflate the air storage tank 2 to maintain the internal pressure of the air storage tank 2 at the predetermined pressure value. In this embodiment, the inflation module 3 can not only inject gas into the anti-rolling water tank 1a to discharge the water inside the anti-rolling water tank 1a, but also further maintain the internal pressure of the air storage tank 2, improving the reliability of the semi-submersible floating wind turbine platform for stable floating and support work.

[0069] In a specific embodiment, when the number of the columns 5a is two or more, the columns 5a are fixedly connected by a connecting member to form an integral body. The connecting member may be a support rod 5. An air storage chamber 2, an inflation module 3 and a roll reduction chamber module 1 are provided in each column 5a. The air storage chambers 2 in the columns 5a are communicated through a communication pipe 2b.

[0070] In the description of the present invention, it should be noted that in the embodiments of the present invention, the terms "first", "second", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features.

[0071] In the description of the embodiments of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "mounted", "connected", "coupled" should be understood in a broad sense. For example, "connected" may be a detachable connection or a non-detachable connection; it may be a direct connection or an indirect connection through an intermediate medium. Among them, "fixed connection" means that the two are connected and the relative position relationship after connection remains unchanged.

[0072] The orientation terms mentioned in the embodiments of the present invention, such as "inside", "outside", etc., are only references to the directions in the drawings. Therefore, the orientation terms used are for better and clearer description and understanding of the embodiments of the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and thus cannot be construed as a limitation on the embodiments of the present invention. In addition, unless otherwise specified in the present invention, "a plurality of" in the present invention means two or more.

[0073] In the description of the embodiments of the present invention, the term "comprising", "including" or any other variation thereof is intended to cover a non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the phrase "comprising a..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.

[0074] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art in the technical field, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A roll reduction control method for a semi-submersible floating wind turbine platform, the semi-submersible floating wind turbine platform comprising at least one column and a roll reduction water tank corresponding to the column, characterized in that, Including: Obtaining the attitude parameters of the semi-submersible floating wind turbine platform; Judging whether the attitude parameters of the semi-submersible floating wind turbine platform are within a preset range according to the attitude parameters. If not, determining the column with the largest relative sea level rise amount and its phase according to the attitude parameters, and adjusting the water volume in the anti-rolling water tank corresponding to the column with the largest rise amount so that the attitude parameters of the semi-submersible floating wind turbine platform are within the preset range.

2. The anti-rolling control method of the semi-submersible floating wind turbine platform according to claim 1, wherein The specific steps for adjusting the water volume in the anti-rolling water tank corresponding to the column with the largest rise amount include: When the column with the largest rise amount reaches the lowest point, injecting water into the anti-rolling water tank and opening the exhaust channel of the anti-rolling water tank.

3. The anti-rolling control method of the semi-submersible floating wind turbine platform according to claim 2, characterized in that, During the process of the column with the largest rise amount rising from the lowest point to the highest point, the following steps are also carried out: Injecting compressed air into the anti-rolling water tank to discharge part of the ballast water in the anti-rolling water tank, so that when the column with the largest rise amount reaches the highest point, the ballast water line in the anti-rolling water tank is located at the position of the lowest water line.

4. The anti-rolling control method of the semi-submersible floating wind turbine platform according to claim 1, wherein The attitude parameters include the rotation parameters of the semi-submersible floating wind turbine platform around the x, y, and z axes of the three-axis coordinate system, and the displacement parameters in the x, y, and z directions. The origin of the three-axis coordinate system is located at the center of the semi-submersible floating wind turbine platform.

5. The anti-rolling control method of the semi-submersible floating wind turbine platform according to any one of claims 1 to 4, characterized in that, While obtaining the attitude parameters of the semi-submersible floating wind turbine platform, the attitude parameters are also stored; The column with the largest relative sea level rise amount is determined by the following method: comprehensively determining all the attitude parameters stored within a predetermined time period, determining the column with the largest relative sea level rise amount and its phase.

6. A roll reduction system for a semi-submersible floating wind turbine platform, characterized in that, Including: A semi-submersible floating wind turbine platform, including at least one column, and each column has a gas storage chamber inside; An anti-rolling tank module, including an anti-rolling water tank, an air injection pipe, and an exhaust pipe. One end of the air injection pipe is connected to the anti-rolling water tank, an air injection switch valve is arranged on the air injection pipe, one end of the exhaust pipe communicates with the anti-rolling water tank, and the other end extends outside the column, and an exhaust switch valve is arranged on the exhaust pipe; a sea bottom door is also arranged on the cabin wall of the anti-rolling water tank for water to flow into or out of the anti-rolling water tank; An air inflation module, including an air compressor, which is used to be directly or indirectly connected to the other end of the air injection pipe to inject gas into the anti-rolling water tank; An acquisition component, which is used to acquire the attitude parameters of the semi-submersible floating wind turbine platform; A controller, which is electrically connected to the acquisition component and stores the anti-rolling control method of the semi-submersible floating wind turbine platform according to any one of the above claims 1 to 3 to control the working states of the air compressor, the air injection switch valve, the exhaust switch valve, and the sea bottom door.

7. The anti-rolling system of the semi-submersible floating wind turbine platform according to claim 6, characterized in that, The anti-rolling water tank communicates with the gas storage chamber through the air injection pipe, the air compressor communicates with the gas storage chamber through a pipeline, the air compressor is located inside the column, the gas storage chamber is located at the top of the column, and between the gas storage chamber and the anti-rolling water tank, and the air compressor communicates with the atmosphere outside the column through an air charging pipe.

8. The anti-rolling system of the semi-submersible floating wind turbine platform according to claim 7, characterized in that, The anti-rolling tank module further includes a conical air injection nozzle located in the anti-rolling water tank. One end of the air injection pipe away from the air storage tank is connected to the conical air injection nozzle. The large end face of the conical air injection nozzle faces downward, and a plurality of air outlet holes are provided on the large end face.

9. The anti-rolling system of the semi-submersible floating wind turbine platform according to claim 6, characterized in that, The anti-rolling water tank is located inside the column and at the bottom of the column. When the semi-submersible floating wind turbine platform is at the maximum operating inclination angle, the top of the anti-rolling water tank is not higher than the waterline. Or / and, a pressure sensor is further installed inside the air storage tank to detect the air pressure inside the air storage tank. When the internal pressure of the air storage tank is lower than a predetermined value, the controller also controls the inflation module to inflate the air storage tank to maintain the internal pressure of the air storage tank at the predetermined pressure value.

10. The anti-rolling system of the semi-submersible floating wind turbine platform according to any one of claims 6 to 9, characterized in that, The number of the columns is two or more. Each column is fixedly connected through a connecting member. The air storage tank, the inflation module and the anti-rolling tank module are arranged in each column, and all the air storage tanks are communicated through a connecting pipe.

11. The anti-rolling system of the semi-submersible floating wind turbine platform according to claim 10, characterized in that, The acquisition component includes a vertical acceleration sensor installed on the column, and the vertical acceleration sensor is used to acquire the attitude parameters.

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