EP-4737714-A1 - FLOATING WIND TURBINE FLOATING BODY, WIND TURBINE GENERATOR SYSTEM AND CONTROL METHOD

EP4737714A1EP 4737714 A1EP4737714 A1EP 4737714A1EP-4737714-A1

Abstract

The present application relates to a floating-type wind turbine floating body, a wind turbine generator system and a control method. The floating-type wind turbine floating body includes: a main column, configured to support a tower; a plurality of first connecting bodies, wherein the plurality of first connecting bodies are arranged at intervals in a circumferential direction of the main column and are connected to the main column respectively; a plurality of auxiliary columns, wherein the plurality of auxiliary columns are distributed at intervals in the circumferential direction, and one end of each of the first connecting bodies facing away from the main column is connected to a corresponding auxiliary column of the auxiliary columns; wherein each of the auxiliary columns has a first static chamber and a first dynamic chamber that are independently arranged, a first medium is enclosed within the first static chamber, each of the auxiliary columns is provided with a first opening connected to the first dynamic chamber and a first control valve, and the first control valve controls opening and closing of the first opening to adjust a volume of the seawater entering the first dynamic chamber. According to the floating-type wind turbine floating body, wind turbine generator system and control method provided in the embodiments of the present application, the floating-type wind turbine floating body has a fast response speed and a good stability effect.

Inventors

ZHAI, Endi
GAO, YANG
DU, XIN
SONG, BAOHUA

Assignees

GOLDWIND SCIENCE & TECHNOLOGY CO., LTD.
Beijing Goldwind Science & Creation Windpower Equipment Co. Ltd.

Dates

Publication Date: 20260506
Application Date: 20231220

Claims (18)

A floating-type wind turbine floating body, capable of being arranged in seawater and configured to support a tower, wherein the floating-type wind turbine floating body comprises: a main column, configured to support the tower; a plurality of first connecting bodies, wherein the plurality of first connecting bodies are arranged at intervals in a circumferential direction of the main column and are connected to the main column respectively; a plurality of auxiliary columns, wherein the plurality of auxiliary columns are distributed at intervals in the circumferential direction, and one end of each of the first connecting bodies facing away from the main column is connected to a corresponding auxiliary column of the auxiliary columns; wherein each of the auxiliary columns has a first static chamber and a first dynamic chamber that are independently arranged, a first medium is enclosed within the first static chamber, each of the auxiliary columns is provided with a first opening connected to the first dynamic chamber and a first control valve, and the first control valve controls opening and closing of the first opening to adjust a volume of the seawater entering the first dynamic chamber.
The floating-type wind turbine floating body according to claim 1, wherein the plurality of auxiliary columns are arranged at intervals and uniformly in the circumferential direction, and a second connecting body is connected between every two adjacent auxiliary columns.
The floating-type wind turbine floating body according to claim 1 or 2, wherein one of the first static chamber and the first dynamic chamber is arranged around the other.
The floating-type wind turbine floating body according to claim 3, wherein one of the first dynamic chamber and the first static chamber is an annular chamber and the other is a columnar chamber, and the first dynamic chamber and the first static chamber are arranged coaxially with each other.
The floating-type wind turbine floating body according to any one of claims 1 to 4, wherein each of the auxiliary columns is in a shape of a hollow column as a whole, and the first dynamic chamber and the first static chamber are arranged alternately in a radial direction of each of the auxiliary columns.
The floating-type wind turbine floating body according to claim 5, wherein each of the auxiliary columns has two or more first dynamic chambers, and the two or more first dynamic chambers are all arranged around the first static chamber and are independently distributed from each other.
The floating-type wind turbine floating body according to any one of claims 1 to 6, wherein the first medium comprises at least one of a solid medium and a liquid medium.
The floating-type wind turbine floating body according to any one of claims 1 to 7, further comprising: a compressor and a gas pipe connected to the compressor, wherein the first dynamic chamber of each of the auxiliary columns is connected to the gas pipe.
The floating-type wind turbine floating body according to claim 8, wherein a second control valve is arranged between the first dynamic chamber and the compressor to adjust a flow rate of gas entering the first dynamic chamber.
The floating-type wind turbine floating body according to any one of claims 1 to 9, further comprising: an inclination angle sensor, arranged on at least one of the main column and the auxiliary columns, and configured to acquire an inclination angle, relative to a reference plane, of a whole structure formed by each of the auxiliary columns, the first connecting bodies, and the main column.
The floating-type wind turbine floating body according to any one of claims 1 to 10, wherein a structure of the main column and a structure of each of the auxiliary columns are the same.
A wind turbine generator system, comprising: the floating-type wind turbine floating body according to any one of claims 1 to 11; a wind turbine main body arranged on the main column, wherein the wind turbine main body comprises the tower connected to the main column, a nacelle arranged on the tower, and an impeller arranged on the nacelle.
The wind turbine generator system according to claim 12, further comprising a controller, configured to: acquire current power information of the wind turbine generator system; acquire, under a condition that the current power information continuously exceeds a first threshold for a preset time period, inclination angle information of the floating-type wind turbine floating body; determine, under a condition that the inclination angle information exceeds a preset range, a target auxiliary column that needs to be adjusted based on the inclination angle information, a direction of incoming wind, and target posture information corresponding to a target posture to be adjusted to; and adjust a volume of seawater within the target auxiliary column until the floating-type wind turbine floating body reaches the target posture.
A control method for the wind turbine generator system according to claim 12, comprising: acquiring current power information of the wind turbine generator system; acquiring, under a condition that the current power information continuously exceeds a first threshold for a preset time period, inclination angle information of the floating-type wind turbine floating body; determining, under a condition that the inclination angle information exceeds a preset range, a target auxiliary column that needs to be adjusted based on the inclination angle information, a direction of incoming wind, and target posture information corresponding to a target posture to be adjusted to; and adjusting a volume of seawater within the target auxiliary column until the floating-type wind turbine floating body reaches the target posture.
The control method according to claim 14, wherein the inclination angle information comprises an inclination angle of the floating-type wind turbine floating body relative to a preset reference plane; the step of determining, under a condition that the inclination angle information exceeds a preset range, a target auxiliary column that needs to be adjusted based on the inclination angle information, a direction of incoming wind, and target posture information corresponding to a target posture to be adjusted to comprises: determining, under a condition that the inclination angle of the floating-type wind turbine floating body relative to the preset reference plane is greater than a second threshold, and an included angle a between the direction of incoming wind and a reference wind direction is in a range of 0°<a<360°, at least two of the plurality of auxiliary columns as the target auxiliary columns to be adjusted; and determining, under a condition that the inclination angle of the floating-type wind turbine floating body relative to the preset reference plane is greater than the second threshold, and the included angle a between the direction of incoming wind and the reference wind direction is 360°, an auxiliary column among the plurality of auxiliary columns as the target auxiliary column, wherein an extension direction of a line connecting a center of the auxiliary column to a center of the main column is parallel to the direction of incoming wind.
The control method according to claim 15, wherein the floating-type wind turbine floating body comprises three auxiliary columns comprising a first auxiliary column, a second auxiliary column, and a third auxiliary column, an included angle between a line connecting a center of the first auxiliary column and the center of the main column and the reference wind direction is 60°, an included angle between a line connecting a center of the second auxiliary column and the center of the main column and the reference wind direction is 300°, and an included angle between a line connecting a center of the third auxiliary column and the center of the main column and the reference wind direction is 180°; the step of determining, under a condition that the inclination angle of the floating-type wind turbine floating body relative to the preset reference plane is greater than a second threshold, and an included angle a between the direction of incoming wind and a reference wind direction is in a range of 0°< a <360°, at least two of the plurality of auxiliary columns as the target auxiliary columns to be adjusted comprises: determining, under a condition that the inclination angle of the floating-type wind turbine floating body relative to the preset reference plane is greater than the second threshold, and the included angle a between the direction of incoming wind and the reference wind direction is in a range of 0°< a ≤90°, the first auxiliary column and the third auxiliary column as the target auxiliary columns to be adjusted; determining, under a condition that the inclination angle of the floating-type wind turbine floating body relative to the preset reference plane is greater than the second threshold, and the included angle a between the direction of incoming wind and the reference wind direction is in a range of 90°< a ≤180°, the first auxiliary column and the second auxiliary column as the target auxiliary columns to be adjusted; and determining, under a condition that the inclination angle of the floating-type wind turbine floating body relative to the preset reference plane is greater than the second threshold, and the included angle a between the direction of incoming wind and the reference wind direction is in a range of 180°< a <360°, the second auxiliary column and the third auxiliary column as the target auxiliary columns to be adjusted.
The control method according to claim 14, wherein the adjusting the volume of seawater within the target auxiliary column comprises: pressing the seawater into the target auxiliary column through the first opening and discharging the seawater into a sea area to adjust an overall displacement of the floating-type wind turbine floating body.
The control method according to claim 14, wherein after the step of adjusting a volume of seawater within the target auxiliary column until the floating-type wind turbine floating body reaches the target posture, the control method further comprises: acquiring current power information of the wind turbine generator system; adjusting, under a condition that the current power information is continuously less than the first threshold for a preset time period, the volume of seawater within the target auxiliary column to restore to an initial state; or a structure of the main column and a structure of each of the auxiliary columns are the same, and the method further comprises: acquiring current power information of the wind turbine generator system; adjusting, under a condition that the current power information is continuously less than the first threshold for a preset time period, the volume of seawater within the target auxiliary column and a volume of seawater in the main column to restore the floating-type wind turbine floating body to an initial state.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS This application claims priority to Chinese Patent Application No. 202310816298.2 filed on June 29, 2023, which is hereby incorporated by reference in its entirety. TECHNICAL FIELD The present application relates to the technical field of wind power, and in particular to a floating-type wind turbine floating body, a wind turbine generator system and a control method. BACKGROUND The wind power industry continues to contribute to the achievement of dual-carbon goals. Currently, wind turbine generator systems are developing toward larger single-unit capacity, lighter overall weight, intelligentization, and offshore applications. According to statistics, the cumulative installed capacity of offshore wind power is increasing year by year. With the large-scale development of nearshore resources, the development and utilization of deep-sea resources have attracted significant attention. Within this industry scenario, floating-type wind turbine generator systems are gradually being developed and will become a major contributor to the subsequent development of offshore wind power. A wind turbine floating body is used to support components, such as a tower, a nacelle etc., of a floating-type wind turbine generator system. When the wind turbine generator system faces wind loads, wave loads, ocean current loads, ice loads, etc., from the perspective of overall dynamics, the wind turbine floating body has six degrees of freedom in all directions, due to the "floating" characteristics of the floating-type wind turbine generator system. Under intertwined coupling of external load randomness and the complexity of the wind turbine generator system's own motion, the overall non-linear characteristics of the floating-type wind turbine generator system become more complex. The motion stability of the floating-type wind turbine generator system is one of the most important indicators to ensure continuous, stable, safe and efficient output of the wind turbine generator system and to ensure power generation. Therefore, how to ensure the stability of the floating-type wind turbine generator system is one of the problems that need to be urgently solved in the wind power field. The wind turbine floating body in related art mainly adjusts an overall inclination angle of the wind turbine floating body by controlling mutual flow of fluids between different floating bodies, so as to ensure the stability of the floating-type wind turbine generator system where the wind turbine floating body is located. However, this design method makes an overall displacement of the wind turbine floating body unchanged, resulting in slow response speed and poor stability effect. SUMMARY Embodiments of the present application provide a floating-type wind turbine floating body, a wind turbine generator system and a control method. The floating-type wind turbine floating body has a fast response speed and a good stability effect. In one aspect, embodiments of the present application provide a floating-type wind turbine floating body, capable of being arranged in seawater and configured to support a tower, wherein the floating-type wind turbine floating body includes: a main column, configured to support the tower; a plurality of first connecting bodies, wherein the plurality of first connecting bodies are arranged at intervals in a circumferential direction of the main column and are connected to the main column respectively; a plurality of auxiliary columns, wherein the plurality of auxiliary columns are distributed at intervals in the circumferential direction, and one end of each of the first connecting bodies facing away from the main column is connected to a corresponding auxiliary column of the auxiliary columns; wherein each of the auxiliary columns has a first static chamber and a first dynamic chamber that are independently arranged, a first medium is enclosed within the first static chamber, each of the auxiliary columns is provided with a first opening connected to the first dynamic chamber and a first control valve, and the first control valve controls opening and closing of the first opening to adjust a volume of the seawater entering the first dynamic chamber. In another aspect, embodiments of the present application provide a wind turbine generator system, including: the floating-type wind turbine floating body described above; a wind turbine main body arranged on the main column, wherein the wind turbine main body includes the tower connected to the main column, a nacelle arranged on the tower, and an impeller arranged on the nacelle. In yet another aspect, embodiments of the present application provide a control method for the wind turbine generator system described above, including: acquiring current power information of the wind turbine generator system; acquiring, under a condition that the current power information continuously exceeds a first threshold for a preset time period, inclination angle