A wind turbine wake control system and method based on inflow reliability interlocking

Abstract

This invention discloses a wake control system and method for wind turbines based on inflow reliability interlocking. The system includes a wind condition sensing module, an operating parameter acquisition module, a controller, and a wake control actuator. The controller determines the rotor swept height range based on the hub height and rotor radius, generating a three-dimensional non-uniform inflow state covering the upper edge of the rotor, the hub height, and the lower edge. Before outputting wake control commands, it performs inflow reliability interlocking verification. When the inflow reliability flag is unreliable, wake control commands are prohibited from being output. When the inflow is reliable and wake interference exceeds limits and safety constraints are met, yaw, pitch, or power control commands are generated to change the wake centerline position, rotor thrust coefficient, or wake recovery state. This invention uses three-dimensional non-uniform inflow reliability as a mandatory precondition for wake control, avoiding the output of erroneous control commands based on unreliable inflows, thus improving the reliability and safety of wake control.

Description

Technical Field

[0001] This invention relates to the field of wind turbine generator control technology, specifically to a wind turbine wake control system and method with inflow reliability interlocking. Background Technology

[0002] As wind turbines develop towards larger megawatts and larger diameters, rotor diameters can reach hundreds of meters, and the height of the rotor swept surface covers a range from tens to hundreds of meters. Within this height range, the actual incoming flow often exhibits significant wind speed shear, wind direction deflection with height, and vertical variations in turbulence parameters, i.e., three-dimensional non-uniform inflow characteristics.

[0003] Existing wind farm wake control technologies typically determine whether to activate yaw, pitch, or power regulation based on changes in wind conditions at a single point at hub height or overall wind conditions. These methods usually focus on position feedback at the wake output, yaw offset activation judgment, or wind farm power optimization, while paying insufficient attention to the reliability of the three-dimensional non-uniform inflow state at the control input.

[0004] For large wind turbines, the rotor swept surface height range is large, and there may be significant differences in wind speed, wind direction deflection, and turbulence intensity at the upper edge of the rotor, the hub height, and the lower edge of the rotor. If the controller generates wake control commands based solely on the wind conditions at a single point at the hub height, or based on a three-dimensional non-uniform inflow state without reliability verification, it may still output yaw, pitch, or power correction even when the inflow state itself is unstable or unreliable. This can lead to deviations in wake control direction, insufficient improvement in downstream turbine flow, and even increased turbine load risks.

[0005] Therefore, it is necessary to add a reliability interlocking mechanism for the three-dimensional non-uniform inflow state of the rotor swept surface before the output of the wake control command of the wind turbine, and to make the inflow reliability a mandatory precondition for the output of the wake control command, so as to improve the reliability and safety of wake control of large wind turbines. Summary of the Invention

[0006] The purpose of this invention is to overcome or at least partially solve the above problems by proposing a wind turbine wake control system and method with inflow reliability interlocking.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a wind turbine wake control system with inflow reliability interlocking, applied to a horizontal axis wind turbine or a multi-machine collaborative control system for a wind farm, comprising: The wind condition sensing module is used to obtain the wind speed, wind direction and turbulence intensity at different heights in front of the wind turbine rotor; The wind turbine operating parameter acquisition module is used to acquire the hub height, rotor radius, and operating status parameters of the wind turbine. The controller is communicatively connected to the wind condition sensing module and the wind turbine operating parameter acquisition module. The controller is the main controller of the wind turbine or the main controller of the wind farm. A wake control actuator is communicatively connected to the controller, and the wake control actuator includes at least one of a yaw actuator, a pitch actuator, and a power control unit; The controller is configured as follows: The rotor sweep height range is determined based on the hub height and the rotor radius; A three-dimensional non-uniform inflow state is generated based on the wind speed, wind direction and turbulence intensity at different heights within the rotor sweeping height range; Before outputting the wake control command, perform an inflow confidence interlock check on the three-dimensional non-uniform inflow state and generate an inflow confidence flag. When the inflow confidence flag is unreliable, the output of the wake control command is prohibited; When the inflow confidence flag is reliable, the wake interference index exceeds the preset threshold, and the safety constraints are met, a wake control command is generated and output to the wake control actuator to change the position of the upstream wind turbine wake centerline, the wind turbine thrust coefficient, or the wake recovery state.

[0008] Preferably, the controller includes: The rotor sweeping surface identification unit is used to determine the rotor sweeping height range based on the hub height and rotor radius. The three-dimensional non-uniform inflow state generation unit is used to generate a three-dimensional non-uniform inflow state based on the wind speed, wind direction and turbulence intensity at different heights within the rotor sweeping height range. The inflow confidence interlocking verification unit is used to perform inflow confidence interlocking verification on the three-dimensional non-uniform inflow state and generate an inflow confidence flag. The wake interference judgment unit is used to determine whether the wake interference index exceeds the preset threshold. The safety constraint determination unit is used to determine whether the candidate control correction amount meets the safety constraints. A control correction generation unit is used to generate control correction quantities as wake control commands. The control command output unit is used to prohibit the output of wake control commands when the inflow confidence flag is untrusted, and to output wake control commands when the inflow confidence flag is trustworthy.

[0009] Preferably, the wake control command includes at least one of yaw angle correction, pitch angle correction, and power setting correction. The yaw actuator drives the nacelle to rotate around the tower axis according to the yaw angle correction, so as to change the offset state of the upstream wind turbine wake centerline relative to the downstream wind turbine rotor swept surface. The pitch actuator adjusts the blade pitch angle according to the pitch angle correction amount to change the wind turbine thrust coefficient or wake velocity deficit. The power control unit adjusts the generator torque or converter control parameters according to the power setting correction amount to change the power output or wake recovery state of the wind turbine.

[0010] Preferably, the objects of the inflow reliability interlock verification include multi-height wind speed, multi-height wind direction and multi-height turbulence intensity within the rotor sweep height range, and the multi-height includes at least the rotor upper edge height, hub height and rotor lower edge height.

[0011] Preferably, the inflow reliability interlock verification is implemented by at least one of the following methods: an inflow transfer model without wind turbine aerodynamic effects, an equivalent inflow retention discrimination model, a pre-calibrated inflow reliability table, a controller-built-in inflow reliability discrimination model, or an inflow transfer model based on computational fluid dynamics.

[0012] Preferably, the safety constraints include at least one of the following: yaw rate constraint, pitch angle change rate constraint, blade root bending moment constraint, tower bending moment constraint, rotor speed constraint, and power fluctuation constraint.

[0013] Preferably, the wind condition sensing module includes at least one of the following: nacelle lidar, scanning lidar, wind measurement tower, nacelle anemometer, ground meteorological station, and wind farm SCADA (data acquisition and monitoring control system) wind condition acquisition unit.

[0014] Preferably, the wake interference index is determined based on the average velocity deficit of the downstream fan rotor swept surface, the turbulence intensity increment, and the degree of overlap between the upstream fan wake and the downstream fan rotor swept surface.

[0015] Preferably, the rotor sweep height range is determined by the following formula: ; in, The height of the lower edge of the rotor. The height of the upper edge of the rotor. R is the hub height, and R is the rotor radius.

[0016] This invention also provides a wind turbine wake control method based on inflow reliability interlocking, applied to the above-mentioned system, comprising the following steps: The wind speed, wind direction, and turbulence intensity at different heights in front of the wind turbine rotor are obtained through the wind condition sensing module. The wind turbine hub height, rotor radius, and operating status parameters are acquired through the wind turbine operating parameter acquisition module. The controller determines the rotor sweep height range based on the hub height and rotor radius. The controller generates a three-dimensional non-uniform inflow state based on the wind speed, wind direction and turbulence intensity at different heights within the rotor sweep height range; Before the controller outputs the wake control command, it performs an inflow confidence interlock check on the three-dimensional non-uniform inflow state and generates an inflow confidence flag. When the inflow confidence flag is untrusted, the controller will prevent the output of wake control commands. When the inflow confidence indicator is reliable, the wake interference index exceeds the preset threshold, and the safety constraints are met, the controller generates and outputs a wake control command to the wake control actuator to change the position of the upstream wind turbine wake centerline, the wind turbine thrust coefficient, or the wake recovery state.

[0017] Compared with the prior art, the present invention has the following beneficial effects: This invention does not simply determine whether to activate wake control based on wind direction changes, wake position, or wake interference level. Instead, it adds a three-dimensional non-uniform inflow reliability interlock before the control command is output, making inflow reliability a mandatory precondition for the output of wake control commands, thus avoiding the output of erroneous control commands based on unreliable inflow states.

[0018] This invention expands the control input for wind turbine wake regulation from a single point wind condition at the hub height to a three-dimensional non-uniform inflow state covering the rotor sweep height range, which can better reflect the flow differences between the upper edge of the rotor, the hub height, and the lower edge of the rotor of large wind turbines.

[0019] When the inflow reliability does not meet the requirements, this invention prohibits the use of wake control commands regardless of whether the wake interference index exceeds the threshold, thereby improving the safety and reliability of wake control.

[0020] This invention forms a triple control and protection mechanism through inflow reliability interlocking, wake interference interlocking, and safety constraint interlocking, which can reduce the possibility of wake control direction deviation, increased load risk, and control malfunction. Attached Figure Description

[0021] Figure 1 This is a hardware architecture diagram of the system of the present invention; Figure 2 This is a diagram of the internal functional modules of the main controller of the present invention; Figure 3 This is the inflow reliability interlocking control state diagram of the present invention; Figure 4 This is a schematic diagram of the three-dimensional non-uniform inflow onto the rotor sweeping surface of the present invention; Figure 5 This is a schematic diagram illustrating the inflow credibility verification of the present invention; Figure 6 This is a flowchart of the inflow credibility interlocking and feedback correction process of the present invention; Figure 7 This is a schematic diagram illustrating the calculation of the wake interference index of the present invention; Figure 8 This is a schematic diagram of the yaw, pitch, and power execution paths of the present invention; Figure 9 This is a flowchart of the control safety constraint determination process of the present invention. Detailed Implementation

[0022] The present invention will be further described in detail below with reference to the accompanying drawings.

[0023] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. After reading this description, those skilled in the art can make creative modifications to this embodiment as needed, but as long as they are within the scope of the claims of the present invention, they are protected by patent law.

[0024] This invention relates to a wind turbine wake control system and method with inflow reliability interlocking, which solves the technical problems in the prior art. The overall concept is as follows: Example 1

[0025] like Figures 1-9 As shown, a wind turbine wake control system with inflow reliability interlocking includes a wind condition sensing module, a wind turbine operating parameter acquisition module, a controller, a wake control actuator, and a communication module.

[0026] The wind condition sensing module includes at least one of the following: nacelle lidar, scanning lidar, wind measurement tower, nacelle anemometer, ground meteorological station, and wind farm SCADA wind condition acquisition unit, used to acquire wind speed, wind direction, and turbulence intensity at different heights in front of the wind turbine rotor.

[0027] The wind turbine operating parameter acquisition module is used to obtain operating parameters such as wind turbine hub height, rotor radius, yaw angle, pitch angle, rotor speed, power, blade root bending moment, and tower bending moment.

[0028] The controller is used to receive wind condition data and unit operating parameters, generate a three-dimensional non-uniform inflow state, perform inflow reliability interlock verification, and generate wake control commands when the interlock conditions are met.

[0029] The wake control actuator includes a yaw actuator, a pitch actuator, and a power control unit. The yaw actuator drives the nacelle to yaw according to the yaw angle correction; the pitch actuator adjusts the blade pitch angle according to the pitch angle correction; and the power control unit adjusts the generator torque or power output according to the power setting correction.

[0030] The controller includes a rotor sweeping surface identification unit, a three-dimensional non-uniform inflow state generation unit, an inflow reliability interlock verification unit, a wake interference judgment unit, a safety constraint judgment unit, a control correction quantity generation unit, and a control command output unit.

[0031] The rotor sweep surface identification unit is used to determine the height range of the upper edge of the fan rotor, the hub height, and the lower edge of the rotor based on the hub height and the rotor radius.

[0032] The three-dimensional non-uniform inflow state generation unit is used to generate a three-dimensional non-uniform inflow state based on the wind speed, wind direction and turbulence intensity at different heights within the rotor sweep height range.

[0033] The inflow reliability interlock verification unit is used to determine the reliability of the current three-dimensional non-uniform inflow state based on the wind speed, wind direction, and turbulence intensity within the rotor sweep height range, and generates an inflow reliability flag. When the inflow reliability flag is unreliable, the controller does not enable the wake control command.

[0034] The wake interference judgment unit is used to determine whether the wake of the upstream fan has a significant impact on the swept surface of the downstream fan rotor.

[0035] The safety constraint determination unit is used to determine whether the candidate wake control command meets safety constraints such as yaw rate, pitch angle change rate, blade root bending moment, tower bending moment, rotor speed and power fluctuation.

[0036] The control correction generation unit is used to generate control correction quantities as wake control commands when the inflow confidence, wake interference conditions and safety constraints are all met.

[0037] The control command output unit is used to send the wake control command that meets the conditions to the wake control actuator.

[0038] The controller determines the rotor sweep height range based on the wind turbine hub height and rotor radius, and within this range acquires or generates a three-dimensional non-uniform inflow state showing the variation of wind speed, wind direction, and turbulence intensity with height. For example... Figure 4 As shown, the incoming flow experiences wind speed shear and wind direction deflection in the vertical direction, and the swept surface of the wind turbine rotor is approximately equal to the hub height. Centered on a rotor with radius R, the height of the rotor's upper edge is... The height of the lower edge of the rotor is Within the rotor sweep height range, the wind speed profile U(z), wind direction profile θ(z), and turbulence intensity profile I(z) vary with height, forming a three-dimensional non-uniform inflow state. The three-dimensional non-uniform inflow state includes at least the wind speed differences, wind direction deflection, and turbulence intensity variations at the rotor upper edge, hub height, and rotor lower edge.

[0039] Before outputting the wake control command, the controller performs an inflow reliability interlock check on the three-dimensional non-uniform inflow state. When the inflow reliability does not meet the preset requirements, the controller prohibits the wake control command from being activated. At this time, even if the wake interference index exceeds the preset threshold, the controller will not allow the wake control actuator to operate.

[0040] Inflow reliability interlock verification can be achieved through an inflow transfer model without wind turbine aerodynamic effects, an equivalent inflow retention discrimination model, a pre-calibrated inflow reliability table, a controller-built-in inflow reliability discrimination model, or an inflow transfer model based on computational fluid dynamics.

[0041] like Figure 5 As shown in the upper part, the inflow transfer model without applying the aerodynamic force of the wind turbine at x=0 in the proposed wind turbine placement area transfers the inflow state from the inlet section to the outlet section. At different downstream locations (1D, 2D, 3D, 5D, 8D up to nD), wind speed profiles U(z), wind direction profiles θ(z), and turbulence intensity profiles I(z) or turbulent kinetic energy profiles k(z) are generated, respectively. The reliability of the inflow transfer is evaluated by comparing the predicted inflow state at each downstream location with the actual collected downstream inflow sample profiles.

[0042] like Figure 5 The lower part shows the specific process of the inflow reliability interlock verification: First, obtain the inflow status, then compare it with the cross-section of the proposed turbine layout area and the downstream incoming flow sample, perform the inflow reliability interlock verification, and generate an inflow reliability flag. When the requirements are not met, wake control is prohibited or the correction amount is set to zero; when the requirements are met, the wake interference judgment stage begins.

[0043] Once the inflow reliability meets the requirements, the controller further determines the degree of impact of the upstream fan wake on the downstream fan. For example... Figure 7 As shown, the upstream fan has an incoming flow velocity of The action generates a wake, whose centerline propagates downstream, overlapping with the swept surface of the downstream fan rotor. The controller determines the wake overlap ratio based on this. Downstream fan rotor swept surface average velocity loss and turbulence intensity increment Calculate the wake interference index W and determine whether the wake interference index W exceeds the preset threshold to determine whether wake control needs to be activated.

[0044] When the wake interference does not reach the preset threshold, the controller does not enable wake regulation. When the wake interference reaches the preset threshold, the inflow confidence meets the requirements, and the safety constraints are met, the controller generates a wake regulation command.

[0045] Wake control commands include yaw angle corrections, pitch angle corrections, or power setting corrections. Yaw angle corrections drive the yaw actuator to adjust the nacelle yaw angle, causing the wake centerline of the upstream turbine to shift relative to the swept surface of the downstream turbine. Pitch angle corrections drive the pitch actuator to adjust the blade pitch angle, thereby altering the rotor thrust coefficient and wake velocity deficit. Power setting corrections adjust generator torque or power output to change the energy extraction intensity of the upstream turbine from the incoming flow and the wake recovery state.

[0046] Before outputting control commands, the controller also determines whether the yaw rate, pitch angle change rate, blade root moment, tower moment, rotor speed, and power fluctuations meet safety constraints. Only when the inflow confidence, wake interference conditions, and safety constraints are all met will the controller output control commands to the corresponding actuators.

[0047] Example 2

[0048] This study focuses on a 10 MW onshore wind turbine in the Ulanqab region. The wind condition sensing module includes a wind measurement tower and a nacelle lidar, used to acquire wind speed, direction, and turbulence intensity at different heights in front of the turbine rotor. The wind turbine operating parameter acquisition module acquires hub height, rotor radius, current yaw angle, current pitch angle, rotor speed, active power, blade root moment, and tower moment.

[0049] Input parameters include: =70m, =8.4m / s, =40.99° =0.03m, =119m, R=89.15m.

[0050] in, For reference wind height, For the average wind speed at the reference height, For site perimeter, The above parameters are used to determine the rotor sweep height range of a 10MW wind turbine and serve as the basic input for generating the three-dimensional non-uniform inflow state and verifying the inflow reliability interlock.

[0051] The rotor sweep height range is: =119-89.15=29.85m; =119+89.15=208.15m.

[0052] The controller constructs wind speed, wind direction deflection, and turbulence parameter profiles within the range of 29.85m to 208.15m and converts them into three-dimensional velocity components. During the inflow reliability interlock verification process, the initial calibration results show that the reliability deviation of the wind speed at the hub height at a position of 3 times the rotor diameter is 7.2%, exceeding the 5% threshold; the reliability deviation of the wind direction is 1.6°, meeting the 2° threshold; and the reliability deviation of the turbulent kinetic energy is 18.5%, exceeding the 15% threshold.

[0053] The controller updates the inflow reliability verification parameters based on the wind speed reliability deviation and corrects the wind speed status; simultaneously, it updates the turbulence intensity status based on the turbulence reliability deviation. After the second inflow reliability interlock verification, the hub height wind speed reliability deviation decreased to 3.4%, and the turbulence reliability deviation decreased to 13.2%. After the third iteration, the average reliability deviation of wind speed within the rotor swept surface was 2.1%, the maximum reliability deviation of wind direction was 1.2°, and the average reliability deviation of turbulence was 10.6%, all meeting the reliability thresholds.

[0054] Subsequently, the controller calculates wake interference indicators based on the three-dimensional non-uniform inflow reliability state and the relative position of the downstream wind turbines. When the wake interference indicators exceed a preset threshold, the controller generates candidate wake control commands. The controller further determines whether the yaw rate, pitch angle change rate, blade root bending moment, tower bending moment, and power fluctuations meet safety constraints. When the safety constraints are met, the controller sends control commands to the wake control actuator.

[0055] Example 3

[0056] The study focuses on a 26 MW offshore wind turbine in Dongying. The system acquires offshore wind conditions via nacelle lidar, offshore wind measurement platform, or wind farm data acquisition and monitoring control system. It also acquires hub height, rotor radius, current yaw angle, current pitch angle, power, blade root load, tower load, and relative positions of upstream and downstream turbines via an operating parameter acquisition module.

[0057] Input parameters include: =100m, =7.6m / s, =38.3°, =0.0002m, =185m, R=155m. Wherein, It is the surface roughness length (also known as the sea surface roughness length under marine conditions).

[0058] The rotor sweep height range is: =185-155=30m; =185+155=340m.

[0059] Since the turbine rotor sweep range covers an altitude of 30m to 340m, wind speed shear and wind direction deflection have a significant impact on wake control. The controller generates a three-dimensional non-uniform inflow state within this altitude range, which includes wind speed shear, wind direction deflection, and turbulence intensity variations, and uses this as the basis for judging the inflow reliability before wake control.

[0060] During the inflow reliability interlock verification process, the initial inflow field's wind direction reliability deviation at a position 5 times the rotor diameter reached 3.1°, exceeding the 2° threshold. The controller calculated the wind direction reliability deviation at the hub height and at different heights within the rotor swept surface, and updated the inflow reliability verification parameters or corrected the wind direction deflection state based on these deviations. After a second inflow reliability interlock verification, the maximum wind direction reliability deviation decreased to 1.5°, and both the wind speed reliability deviation and the turbulent kinetic energy reliability deviation met the preset thresholds.

[0061] If the inflow confidence level does not meet the requirements, the controller will not output a wake control command, or will set the wake control command to zero, even if the wake interference index exceeds the threshold. When the inflow confidence level meets the requirements, the wind farm main controller calculates the overlap rate between the upstream turbine wake and the downstream turbine swept surface, the average velocity deficit of the downstream turbine swept surface, and the turbulence intensity increment based on the three-dimensional non-uniform inflow confidence state. When the wake interference index exceeds the threshold and meets the safety constraints, the controller sends a control command to the upstream turbine wake control actuator to change the position of the upstream turbine wake centerline, the rotor thrust coefficient, or the wake velocity deficit distribution.

[0062] Example 4

[0063] Under a certain operating condition, the wind condition sensing module detects that the wake of the upstream wind turbine may affect the swept surface of the downstream wind turbine rotor. The controller determines that the wake interference index exceeds the preset threshold based on the velocity deficit of the swept surface of the downstream wind turbine rotor, the increase in turbulence intensity, and the degree of wake overlap, thus meeting the wake control activation conditions.

[0064] Simultaneously, the controller performs inflow reliability interlock verification on the three-dimensional non-uniform inflow state within the rotor sweep height range. The verification results show that the wind speed, wind direction, or turbulence intensity at the upper edge of the rotor, hub height, or lower edge of the rotor does not meet the preset reliability requirements, and the inflow reliability flag generated by the controller is unreliable.

[0065] In this situation, even if the wake interference index exceeds the preset threshold, the controller will not output wake control commands to the wake control actuator. Instead, it will keep the current yaw angle, current pitch angle and current power settings unchanged, or set the wake control commands to zero.

[0066] Once the inflow confidence level returns to a reliable state, the controller reassesses the wake interference index and safety constraints. Only when the inflow confidence level meets the requirements, the wake interference index exceeds the preset threshold, and the safety constraints are satisfied will the controller allow the output of wake control commands.

[0067] As can be seen from this embodiment, the present invention does not determine whether to enable wake control solely based on the degree of wake interference, but rather uses the three-dimensional non-uniform inflow reliability at the input end as a mandatory interlocking condition before the control command is output.

[0068] The above description of the embodiments is provided to facilitate understanding and use of the present invention by those skilled in the art. It is obvious to those skilled in the art that various modifications can be made to the embodiments, and the general principles described herein can be applied to other embodiments without creative effort. Therefore, the present invention is not limited to the above embodiments. Improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the present invention should be within the protection scope of the present invention.

Claims

1. A wind turbine wake control system with inflow reliability interlocking, applied to a horizontal axis wind turbine or a multi-machine collaborative control system for a wind farm, characterized in that, include: The wind condition sensing module is used to obtain the wind speed, wind direction and turbulence intensity at different heights in front of the wind turbine rotor; The wind turbine operating parameter acquisition module is used to acquire the hub height, rotor radius, and operating status parameters of the wind turbine. The controller is communicatively connected to the wind condition sensing module and the wind turbine operating parameter acquisition module. The controller is the main controller of the wind turbine or the main controller of the wind farm. A wake control actuator is communicatively connected to the controller, and the wake control actuator includes at least one of a yaw actuator, a pitch actuator, and a power control unit; The controller is configured as follows: The rotor sweep height range is determined based on the hub height and the rotor radius; A three-dimensional non-uniform inflow state is generated based on the wind speed, wind direction and turbulence intensity at different heights within the rotor sweeping height range; Before outputting the wake control command, perform an inflow confidence interlock check on the three-dimensional non-uniform inflow state and generate an inflow confidence flag. When the inflow confidence flag is unreliable, the output of the wake control command is prohibited; When the inflow confidence flag is reliable, the wake interference index exceeds the preset threshold, and the safety constraints are met, a wake control command is generated and output to the wake control actuator to change the position of the upstream wind turbine wake centerline, the wind turbine thrust coefficient, or the wake recovery state.

2. The wind turbine wake control system with inflow reliability interlocking as described in claim 1, characterized in that, The controller includes: The rotor sweeping surface identification unit is used to determine the rotor sweeping height range based on the hub height and rotor radius. The three-dimensional non-uniform inflow state generation unit is used to generate a three-dimensional non-uniform inflow state based on the wind speed, wind direction and turbulence intensity at different heights within the rotor sweeping height range. The inflow confidence interlocking verification unit is used to perform inflow confidence interlocking verification on the three-dimensional non-uniform inflow state and generate an inflow confidence flag. The wake interference judgment unit is used to determine whether the wake interference index exceeds the preset threshold. The safety constraint determination unit is used to determine whether the candidate control correction amount meets the safety constraints. A control correction generation unit is used to generate control correction quantities as wake control commands. The control command output unit is used to prohibit the output of wake control commands when the inflow confidence flag is untrusted, and to output wake control commands when the inflow confidence flag is trustworthy.

3. The wind turbine wake control system with inflow reliability interlocking as described in claim 2, characterized in that: The wake control command includes at least one of yaw angle correction, pitch angle correction, and power setting correction. The yaw actuator drives the nacelle to rotate around the tower axis according to the yaw angle correction, so as to change the offset state of the upstream wind turbine wake centerline relative to the downstream wind turbine rotor swept surface. The pitch actuator adjusts the blade pitch angle according to the pitch angle correction amount to change the wind turbine thrust coefficient or wake velocity deficit. The power control unit adjusts the generator torque or converter control parameters according to the power setting correction amount to change the power output or wake recovery state of the wind turbine.

4. The wind turbine wake control system with inflow reliability interlocking as described in claim 1, characterized in that, The objects of the inflow reliability interlock verification include multi-height wind speed, multi-height wind direction and multi-height turbulence intensity within the rotor sweep height range, and the multi-height includes at least the rotor upper edge height, hub height and rotor lower edge height.

5. The wind turbine wake control system with inflow reliability interlocking according to claim 1, characterized in that, The inflow reliability interlock verification is achieved through at least one of the following methods: an inflow transfer model without wind turbine aerodynamic effects, an equivalent inflow retention discrimination model, a pre-calibrated inflow reliability table, a controller-built-in inflow reliability discrimination model, or an inflow transfer model based on computational fluid dynamics.

6. The wind turbine wake control system with inflow reliability interlocking according to claim 1, characterized in that, The safety constraints include at least one of the following: yaw rate constraint, pitch angle change rate constraint, blade root bending moment constraint, tower bending moment constraint, rotor speed constraint, and power fluctuation constraint.

7. The wind turbine wake control system with inflow reliability interlocking according to claim 1, characterized in that, The wind condition sensing module includes at least one of the following: nacelle lidar, scanning lidar, wind measurement tower, nacelle anemometer, ground meteorological station, and wind farm SCADA wind condition acquisition unit.

8. The wind turbine wake control system with inflow reliability interlocking according to claim 1, characterized in that, The wake interference index is determined based on the average velocity deficit of the downstream wind turbine rotor swept surface, the turbulence intensity increment, and the degree of overlap between the upstream wind turbine wake and the downstream wind turbine rotor swept surface.

9. The wind turbine wake control system with inflow reliability interlocking according to claim 1, characterized in that, The rotor sweep height range is determined by the following formula: ； in, The height of the lower edge of the rotor. The height of the upper edge of the rotor. R is the hub height, and R is the rotor radius.

10. A method for controlling the wake of a wind turbine with inflow reliability interlocking, applied to the wind turbine wake control system with inflow reliability interlocking as described in any one of claims 1 to 9, characterized in that, Includes the following steps: The wind speed, wind direction, and turbulence intensity at different heights in front of the wind turbine rotor are obtained through the wind condition sensing module. The wind turbine hub height, rotor radius and operating status parameters are obtained through the wind turbine operating parameter acquisition module. The operating status parameters include the current yaw angle, current pitch angle, wind turbine speed, generator torque, active power and unit operating status. The controller determines the rotor sweep height range based on the hub height and rotor radius. The controller generates a three-dimensional non-uniform inflow state based on the wind speed, wind direction and turbulence intensity at different heights within the rotor sweep height range; Before the controller outputs the wake control command, it performs an inflow confidence interlock check on the three-dimensional non-uniform inflow state and generates an inflow confidence flag. When the inflow confidence flag is untrusted, the controller will prevent the output of wake control commands. When the inflow confidence indicator is reliable, the wake interference index exceeds the preset threshold, and the safety constraints are met, the controller generates and outputs a wake control command to the wake control actuator to change the position of the upstream wind turbine wake centerline, the wind turbine thrust coefficient, or the wake recovery state.

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