KR-102962990-B1 - Method, device, and system for controlling anti-vortex-induced vibration for a wind turbine set

KR102962990B1KR 102962990 B1KR102962990 B1KR 102962990B1KR-102962990-B1

Abstract

A method, apparatus, and system (100) for controlling anti-vortex-induced vibrations for a wind turbine set. The method comprises the steps of: determining whether the wind turbine set enters an anti-vortex mode; in response to the fact that the wind turbine set enters an anti-vortex mode, initiating an anti-vortex function and triggering a window period; and adjusting the blades (200) of the wind turbine set to a preset anti-vortex position within the window period, wherein the window period represents the minimum time required to complete the anti-vortex function.

Inventors

샤오 페이
딩 야차오
셰 진

Assignees

골드윈드 사이언스 앤 테크놀로지 컴퍼니 리미티드

Dates

Publication Date: 20260511
Application Date: 20220930
Priority Date: 20220630

Claims (12)

A control method for anti-vortex-induced vibration of a wind turbine, and A step of determining whether the wind turbine enters an anti-vortex-induced vibration mode; A step of activating an anti-vortex-induced vibration function and triggering a window period in response to the wind turbine entering an anti-vortex-induced vibration mode; and The method includes the step of adjusting the blades of a wind turbine to a preset anti-vortex-inducing vibration position within a window period, The window period indicates the minimum time required to complete the anti-vortex-induced vibration function, and A method in which the length of the window period is determined based on a preset compensation time and a preset pitch rate for a pitch driver of a wind turbine.
In paragraph 1, The anti-vortex-induced vibration mode includes a shutdown anti-vortex-induced vibration mode, a planned power outage anti-vortex-induced vibration mode, an unplanned power outage anti-vortex-induced vibration mode, and a forced anti-vortex-induced vibration mode, and The step for determining whether a wind turbine enters an anti-vortex-induced vibration mode is: A step of determining whether an anti-vortex-induced vibration start signal is received from the main control system of a wind turbine or whether a first preset condition for an unplanned power outage anti-vortex-induced vibration mode is satisfied, wherein the anti-vortex-induced vibration start signal is transmitted by the main control system when a second preset condition for a shutdown anti-vortex-induced vibration mode, a third preset condition for a planned power outage anti-vortex-induced vibration mode, or a fourth preset condition for a forced anti-vortex-induced vibration mode is satisfied, and A method comprising the step of determining that a wind turbine enters an anti-vortex-induced vibration mode in response to receiving an anti-vortex-induced vibration start signal from a main control system or satisfying a first preset condition for an unplanned anti-vortex-induced vibration mode.
In paragraph 2, The first preset condition includes a condition in which the pitch angle of the wind turbine blades is smaller than the pitch angle of anti-vortex-induced vibration during an unplanned power outage of the wind turbine; The second preset condition includes a condition in which the wind turbine is in a shutdown state and the shutdown anti-vortex-inducing vibration function is activated; The third preset condition includes a condition in which the wind turbine is in a shutdown state and the planned power interruption anti-vortex-induced vibration function is activated; A method comprising a fourth preset condition in which the wind turbine is in a shutdown or maintenance state and the forced anti-vortex inducing vibration function is activated.
In paragraph 1, The step of adjusting the wind turbine blades to a preset anti-vortex-inducing vibration position within the window period is: Step of blocking the position comparison function of the anti-vortex-inducing vibration blade; A step of adjusting the pitch angle of an anti-vortex-inducing vibration blade to a preset pitch rate; A step of determining whether the pitch angle of the anti-vortex-inducing vibration blade is adjusted to a preset anti-vortex-inducing vibration pitch angle; and A method comprising the step of determining that the blades of a wind turbine reach a preset anti-vortex-induced vibration position in response to the pitch angle of the anti-vortex-induced vibration blade being adjusted to a preset anti-vortex-induced vibration pitch angle and other blades excluding the anti-vortex-induced vibration blade being at a normal shutdown pitch angle.
In paragraph 4, After the pitch angle of the anti-vortex-inducing vibration blade is adjusted to a preset anti-vortex-inducing vibration pitch angle, the method is: A method comprising the step of further cutting off a pitch driver activation signal of an anti-vortex-inducing vibration blade to maintain the pitch angle of the anti-vortex-inducing vibration blade in response to a pitch driver activation cut-off signal transmitted by a main control system of a wind turbine.
In paragraph 5, A method comprising further a step of terminating an anti-vortex-induced vibration mode in response to the wind turbine satisfying a preset termination condition.
In paragraph 6, The step for terminating the anti-vortex-induced vibration mode is: A step of receiving an anti-vortex-induced vibration termination signal from the main control system of a wind turbine, triggering a window period and restoring the pitch driver activation signal of the anti-vortex-induced vibration blade, adjusting the wind turbine blade to a shutdown position within the window period, and activating the position comparison function of the anti-vortex-induced vibration blade when the window period ends, wherein the anti-vortex-induced vibration termination signal is transmitted by the main control system when a termination condition is detected; and A method further comprising the step of restoring the pitch driver activation signal of the anti-vortex-induced vibration blade and activating the position comparison function of the anti-vortex-induced vibration blade when a pitch defect is detected in the anti-vortex-induced vibration mode.
It is a controller for anti-vortex-induced vibration of wind turbines, and An anti-vortex-induced vibration mode determination module configured to determine whether the wind turbine enters an anti-vortex-induced vibration mode; An anti-vortex-induced vibration trigger module configured to activate an anti-vortex-induced vibration function and trigger a window period in response to the wind turbine entering an anti-vortex-induced vibration mode; and It includes an anti-vortex-induced vibration execution module configured to adjust the blades of a wind turbine to a preset anti-vortex-induced vibration position within a window period, and The window period indicates the minimum time required to complete the anti-vortex-induced vibration function, and A controller in which the length of the window period is determined based on a preset compensation time and a preset pitch rate for a wind turbine pitch driver.
It is a control system for anti-vortex-induced vibration of wind turbines, and A pitch system configured to adjust the position of the wind turbine blades; and It includes a main control system configured to control the operation of the pitch system, and The pitch system is: Determining whether the wind turbine enters an anti-vortex-induced vibration mode; In response to the wind turbine entering the anti-vortex-induced vibration mode, activate the anti-vortex-induced vibration function and trigger the window period; It is additionally configured to adjust the blades of a wind turbine to a preset anti-vortex-inducing vibration position within a window period, and The window period indicates the minimum time required to complete the anti-vortex-induced vibration function, and A control system in which the length of the window period is determined based on a preset compensation time and a preset pitch rate for a wind turbine pitch driver.
A computer-readable storage medium storing a computer program that, when executed by a processor, causes the processor to execute a control method for anti-vortex-inducing vibration of a wind turbine according to any one of claims 1 to 7.
It is an electronic device, and processor; and An electronic device comprising a memory configured to store a computer program that, when executed by a processor, causes the processor to execute a control method for anti-vortex-inducing vibration of a wind turbine according to any one of claims 1 to 7.
delete

Description

Method, device, and system for controlling anti-vortex-induced vibration for a wind turbine set The present disclosure claims priority to Chinese Patent Application No. 202210778989.3, filed on June 30, 2022, with the title of the invention “Anti-vortex-induced vibration control method, apparatus, and system for wind generator set,” the entirety of which is incorporated herein by reference. The present disclosure relates to the field of wind power, and in particular to a control method, apparatus, and system for anti-vortex induced vibration of a wind turbine generator system. Fluid (wind) flowing over the surface of a slender cylinder (e.g., a tower) can induce pairs of antisymmetric vortices downstream due to boundary layer instability. The generation and release of vortices are directly related to periodic changes in excitation on the surface of the tower. When the excitation frequency (fs) approaches the natural frequency (f) of the tower, the tower's vibrations are amplified. Furthermore, these vibrations eventually affect the flow field and reinforce the excitation, which can lead to large-amplitude vibrations. This fluid-solid coupling phenomenon is referred to as vortex-induced vibration. According to dynamic simulation results, when a wind turbine is shut down, if all three blades of the wind turbine stop at 90°, vortex-induced vibrations are easily excited. If one of the blades stops at 40°, the probability of exciting vortex-induced vibrations can be significantly reduced. To suppress vortex-induced vibrations, engineers are generally required to enter the hub of a wind turbine generator system (hereinafter also referred to as "wind turbine"), manually change the three blades of the wind turbine to an anti-vortex-induced vibration position, and manually yaw to perform the anti-vortex-induced vibration function. However, the wind turbine cannot automatically resist vortex-induced vibrations after hoisting. Meanwhile, if the power grid is cut off after the wind turbine is connected to the power grid, the three blades of the wind turbine cannot automatically stop from the anti-vortex-induced vibration position. Therefore, it is required to use another generator to supply power to the wind turbine's pitch system and to manually change the three blades of the wind turbine to an anti-vortex-induced vibration position. With this anti-vortex-induced vibration method in the prior art, a large workforce is required and economic costs increase. In addition, when a pitch failure occurs, the pitch may no longer meet the pitch requirements. In this case, if anti-vortex-induced vibration is implemented, other unknown risks may arise. Therefore, when there is no pitch defect in the wind turbine, the blades of the wind turbine must stop at anti-vortex-induced vibration positions, for example, 90°, -90°, and -40°. When a pitch failure occurs, the blades of the wind turbine must stop at normal stopping positions, 90°, -90°, and -90°, respectively. Meanwhile, as just an example, there may be cases where the wind speed becomes too high in the subsequent period after the wind turbine has stopped at the anti-vortex-induced vibration position. If the wind speed exceeds a critical threshold, a large fatigue load is generated on the blade due to the high wind speed, for example, because the pitch angle of the anti-vortex-induced vibration blade is 40° instead of 90°, which can adversely affect the safety of the wind turbine. Also, as another example, after the wind turbine has stopped at the anti-vortex-induced vibration pitch angle, the blade can absorb wind energy to generate a specific lift, which can rotate the wind turbine. Under anti-vortex-induced vibration pitch angles of 90°, -90°, and -40°, if the rotational speed of the wind turbine exceeds a specific critical threshold, the aerodynamic imbalance of the impeller can increase the fatigue load of the wind turbine. In these cases, the anti-vortex-induced vibration mode must be terminated in a timely manner to ensure the safety of the wind turbine and reduce the fatigue load on the wind turbine. These and/or other aspects and advantages of the present disclosure will become clear and easy to understand from the following detailed description of embodiments of the present disclosure together with the drawings. FIG. 1 illustrates a schematic diagram of a control system for anti-vortex-induced vibration of a wind turbine (100) according to an exemplary embodiment of the present disclosure. FIG. 2 illustrates a flowchart of a control method for anti-vortex-induced vibration of a wind turbine according to an exemplary embodiment of the present disclosure. FIG. 3 illustrates an exemplary flowchart of an anti-vortex-induced vibration process of a main control system (110) according to an exemplary embodiment of the present disclosure. FIG. 4 illustrates an exemplary flowchart of a process for terminating an anti-vortex-induced vibration mode of a main control system (110)