A method and system for active cut-out control of wind turbine turbulence tailing
By acquiring turbulence and wind speed information of wind turbine units, and combining it with preset thresholds to determine turbulence tailing and implement active cut-off control, the safety and power generation issues of the units under turbulence tailing are solved, and safe and efficient wind farm development is realized.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CRRC ZHUZHOU ELECTRIC LOCOMOTIVE RESEARCH INSTITUTE CO LTD
- Filing Date
- 2020-11-17
- Publication Date
- 2026-06-26
AI Technical Summary
Existing technologies exhibit turbulent tailing after wind turbine relocation, causing the load on critical structures and components of the turbine to exceed limits, affecting safety and wind farm power generation. Furthermore, existing solutions may increase costs or impact power generation.
By acquiring turbulence and wind speed information from wind turbines, and combining this with preset thresholds to determine turbulence tailing, active cut-out control is implemented, including diverse adjustments to torque and pitch commands, to promptly respond to environmental changes and exit control.
Without increasing hardware costs, this method ensures the safety and continuity of wind farm development, reduces malfunctions, effectively minimizes power generation performance loss, and achieves safe and efficient turbulence tail control.
Smart Images
Figure CN114508454B_ABST
Abstract
Description
Technical Field
[0001] This invention mainly relates to the field of wind power technology, specifically to an active cut-out control method and system for turbulent tailing of wind turbine generators. Background Technology
[0002] In wind farm development projects, the selection of turbine models and locations typically follows wind turbine design standards. However, during actual project development, insufficient available locations or other constraints (such as ecological red lines, residential noise, and mining encroachment) necessitate location changes. These changes often result in drastic changes in actual wind resource conditions, particularly the tailing of turbulence under strong winds. This causes the loads on critical structures and components of the turbine (such as stationary and rotating hubs) to exceed limits, impacting turbine safety and the wind farm's development. Common solutions include: 1) early relocation; 2) upgrading the turbine model (selecting structurally reinforced models); and 3) reducing the number of available locations. However, these solutions have significant drawbacks, affecting wind farm power generation and / or increasing development costs. Summary of the Invention
[0003] The technical problem to be solved by the present invention is to provide a safe, efficient and easy-to-implement active cut-out control method and system for turbulent tailing of wind turbine units, which addresses the problems existing in the prior art.
[0004] To solve the above-mentioned technical problems, the technical solution proposed by this invention is as follows:
[0005] An active cut-out control method for turbulent tailing in wind turbine generators includes the following steps:
[0006] 1) Acquire turbulence and wind speed information of the wind turbine during operation;
[0007] 2) Compare the turbulence information and wind speed information with the corresponding preset thresholds respectively; when both the turbulence information and wind speed information are greater than the corresponding preset thresholds, it is determined that the turbulence tail is raised and the turbulence tail actively cut-out control is entered.
[0008] As a further improvement to the above technical solution:
[0009] In step 2), the active cut-out control of turbulent tailing includes torque commands and pitch commands for the unit; the torque command is interpolated by a slope decrease or by speed torque; the pitch command is a fixed rate or interpolated by pitch angle and pitch rate.
[0010] Following step 2), the method for actively controlling and exiting turbulent tailing is also included:
[0011] After the torque and pitch commands are executed, the turbulence and wind speed information of the unit are used to make a judgment. If the turbulence and wind speed conditions of the unit meet the requirements for reset and start-up, the unit will reset and start up and perform the normal start-up and power generation process. Otherwise, the unit will continue to be shut down and wait.
[0012] Command execution in place means that, through open-loop design of pitch and torque, the torque command decreases to zero according to the time slope or is interpolated according to the generator speed, while waiting for the pitch command to be executed in place.
[0013] In step 2), the preset threshold corresponding to the turbulence information is +2m / s, and the preset threshold corresponding to the turbulence information is 1.5 times the design turbulence value; if the average wind speed value of the 300s sliding window filter is greater than the rated wind speed +2m / s, and the estimated turbulence value of the 3s sliding window filter is greater than 1.5 times the design turbulence of the wind field, then turbulence tailing is judged.
[0014] This invention also discloses an active cut-out control system for turbulent tailing in wind turbine generators, comprising:
[0015] The first module is used to acquire turbulence and wind speed information of the wind turbine during operation.
[0016] The second module is used to compare turbulence information and wind speed information with corresponding preset thresholds. When both turbulence information and wind speed information are greater than the corresponding preset thresholds, turbulence tailing is determined, and active turbulence tailing control is initiated.
[0017] The present invention further discloses a computer-readable storage medium having a computer program stored thereon, wherein the computer program, when run by a processor, executes the steps of the active cut-out control method for turbulent tailing of wind turbines as described above.
[0018] The present invention also discloses a computer device, including a memory and a processor, wherein the memory stores a computer program, and the computer program, when run by the processor, executes the steps of the active cut-out control method for turbulent tailing of wind turbines as described above.
[0019] Compared with the prior art, the advantages of the present invention are as follows:
[0020] This invention identifies turbulence tailing when both turbulence and wind speed information exceed corresponding preset thresholds, and initiates active turbulence tailing-out control, ensuring the development, construction, and continuity of wind farms under turbulence tailing, as well as the safety of the turbine units. The method is safe, efficient, and easy to implement, safely solving the turbulence tailing problem without increasing hardware costs, and has strong versatility. The method uses a combination of turbulence and wind speed information from the turbine units for judgment, ensuring safety and accuracy while reducing false alarms.
[0021] This invention ensures wind turbine safety by adjusting torque and pitch commands in various ways. It also includes active control to remove turbulence tailing, enabling timely response to current environmental information and rational adjustment of start-up and shutdown actions, effectively reducing power generation performance loss. Attached Figure Description
[0022] Figure 1 This is a flowchart of the method of the present invention in an embodiment.
[0023] Figure 2 The flowchart below shows the active cut-out control exit of the present invention in an embodiment.
[0024] Figure 3 This is a schematic diagram of the torque control method of the present invention.
[0025] Figure 4 This is a schematic diagram of the pitch control method of the present invention. Detailed Implementation
[0026] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.
[0027] like Figure 1 As shown, the active cut-out control method for turbulent tailing of wind turbine units in this embodiment includes the following steps:
[0028] 1) Acquire turbulence and wind speed information of the wind turbine during operation;
[0029] 2) Compare the turbulence information and wind speed information with the corresponding preset thresholds respectively; when both the turbulence information and wind speed information are greater than the corresponding preset thresholds, it is determined that the turbulence tail is raised and the turbulence tail actively cut-out control is entered.
[0030] This invention identifies turbulence tailing when both turbulence and wind speed information exceed corresponding preset thresholds, and initiates active turbulence tailing-out control, ensuring the development, construction, and continuity of wind farms under turbulence tailing, as well as the safety of the turbine units. The method is safe, efficient, and easy to implement, safely solving the turbulence tailing problem without increasing hardware costs, and has strong versatility. The method uses a combination of turbulence and wind speed information from the turbine units for judgment, ensuring safety and accuracy while reducing malfunctions.
[0031] In a preferred embodiment, the active cut-off control for turbulent tailing includes torque and pitch commands for the turbine; the torque command is interpolated based on a decreasing slope or based on rotational speed torque; the pitch command is a fixed rate or interpolated based on pitch angle and pitch rate. By adjusting the torque and pitch commands in various ways, turbine safety is ensured.
[0032] In a preferred embodiment, after step 2), a turbulence tailing active cut-out control exit method is further included, which can respond promptly to the current environmental information of the unit, reasonably adjust the start-up and shutdown actions, and effectively reduce the loss of power generation performance. The control exit method specifically involves: after the torque and pitch commands are executed, a judgment is made again based on the unit's turbulence information and wind speed information; when the unit's turbulence conditions and wind speed conditions meet the reset start-up requirements, the unit resets and starts, executing the normal start-up and power generation process; otherwise, the unit continues to be shut down and waits. Specifically, command execution means: through open-loop design of pitch and torque, the torque command decreases to zero according to the time slope or is interpolated according to the generator speed, while waiting for the pitch command to be executed.
[0033] In a preferred embodiment, in step 2), the preset threshold corresponding to the turbulence information is +2m / s, and the preset threshold corresponding to the turbulence information is 1.5 times the design turbulence value; if the average wind speed value of the 300s sliding window filter is greater than the rated wind speed +2m / s, and the estimated turbulence value of the 3s sliding window filter is greater than 1.5 times the design turbulence of the wind field, then turbulence tailing is determined.
[0034] This invention also discloses an active cut-out control system for turbulent tailing in wind turbine generators, comprising:
[0035] The first module is used to acquire turbulence and wind speed information of the wind turbine during operation.
[0036] The second module is used to compare turbulence information and wind speed information with corresponding preset thresholds. When both turbulence information and wind speed information are greater than the corresponding preset thresholds, turbulence tailing is determined, and active turbulence tailing control is initiated.
[0037] The control system of the present invention is used to execute the control method described above, and also has the advantages described in the control method above.
[0038] This invention further discloses an active cut-out control device for turbulence tailing in wind turbines, including a turbulence estimation module, a turbulence tailing active cut-out control judgment module, a turbulence tailing active cut-out control module, and a turbulence tailing active cut-out control exit judgment module. Specifically, during normal wind turbine power generation operation, the turbulence estimation module first estimates the current turbulence information of the turbine; then, the turbulence tailing active cut-out control judgment module judges whether to initiate active cut-out control. If the judgment result is yes, active cut-out control is initiated; if the judgment result is no, the wind turbine operates normally. The core concept of the turbulence tailing active cut-out control judgment module is turbulence information judgment, and wind speed parallel conditions are introduced in conjunction with the characteristics of tailing to improve the accuracy of the judgment. After determining that active cut-out control of turbulence tailing is required, the turbulence tailing active cut-out control module controls the wind turbine according to predetermined torque and pitch commands. Its main controlled objects are the torque and pitch actuators of the turbine. The control characteristics are diverse; the torque command can be based on a decreasing slope or interpolated based on speed and torque, such as... Figure 3 As shown; the pitch command can be a fixed rate or an interpolation based on the pitch angle and pitch rate, such as... Figure 4 As shown. The turbulence tailing active cut-out control exit judgment module is used to determine whether the unit's turbulence tailing active cut-out control has been completed. If the judgment result is yes, the unit will be reset and restarted; if the judgment result is no, the unit will continue to be shut down and wait.
[0039] This invention further discloses a computer-readable storage medium storing a computer program. When executed by a processor, the computer program performs the steps of the active cut-out control method for turbulent tailing of wind turbines as described above. This invention also discloses a computer device including a memory and a processor. The memory stores a computer program, which, when executed by a processor, performs the steps of the active cut-out control method for turbulent tailing of wind turbines as described above. This invention can implement all or part of the processes in the methods of the above embodiments, or it can be implemented by a computer program instructing related hardware. The computer program can be stored in a computer-readable storage medium, and when executed by a processor, it can implement the steps of the various method embodiments described above. The computer program includes computer program code, which can be in the form of source code, object code, executable files, or certain intermediate forms. The computer-readable medium can include: any entity or device capable of carrying computer program code, recording media, USB flash drives, portable hard drives, magnetic disks, optical disks, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signals, telecommunication signals, and software distribution media, etc. The present invention can implement all or part of the processes in the methods of the above embodiments, or it can be implemented by a computer program instructing related hardware. The computer program can be stored in a computer-readable storage medium, and when the computer program is executed by a processor, it can implement the steps of the various method embodiments described above. The computer program includes computer program code, which can be in the form of source code, object code, executable file, or some intermediate form. The computer-readable medium can include: any entity or device capable of carrying computer program code, recording media, USB flash drive, portable hard drive, magnetic disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signals, telecommunication signals, and software distribution media, etc.
[0040] The present invention will be further described below with reference to the accompanying drawings and a complete specific embodiment:
[0041] like Figure 1As shown, during normal power generation operation of the wind turbine, the turbulence information, wind speed information, and rotational speed information of the unit are estimated in real time. When the turbulence information and the measured wind speed information meet the active cut-out judgment conditions for turbulence tail (such as the active cut-out judgment conditions for turbulence tail can be set as follows: the average wind speed value of the 300s sliding window filter is greater than the rated wind speed + 2m / s, and the estimated turbulence value of the 3s sliding window filter is greater than 0.5 times the design turbulence of the wind farm (such as the design turbulence is 0.12, and the turbulence judgment in the turbulence tail is that the estimated turbulence value (3s sliding window average) is greater than 0.18)), active cut-out control is performed.
[0042] Active turbulence tailing control involves actively controlling the unit's torque and pitch commands upon detecting turbulence tailing. Its control methods are diverse; the torque command can be calculated by decreasing the slope or by interpolating the torque based on speed, such as... Figure 3 As shown; the pitch command can be a fixed rate or an interpolation based on the pitch angle and pitch rate, such as... Figure 4 As shown, by actively cutting off torque and pitch commands, the ultimate load of the unit under turbulent tailing conditions is reduced, ensuring the safety of key components of the unit.
[0043] The turbulence tailing active cut-out control exit judgment is made after the torque and pitch commands are executed (execution of commands means: through open-loop design of pitch and torque, the torque command is made to decrease to zero according to the time slope (such as a decrease slope of 800 Nm / s) or according to the generator speed interpolation (when the generator speed is less than the grid speed (such as 1050 rpm), the torque command is made to decrease to zero), while waiting for the pitch command to be executed (the pitch angle of the three blades to the feathering pitch angle (generally 90 degrees)). Then, the next action of the unit is judged again by combining the unit's turbulence information and wind speed information. When the unit's turbulence conditions and wind speed conditions meet the reset and start-up requirements, the unit resets and starts up, and performs the normal start-up and power generation process; otherwise, the unit continues to be shut down and waits.
[0044] The above are merely preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should be considered within the scope of protection of the present invention.
Claims
1. An active cut-out control method for turbulent tailing in wind turbine generators, characterized in that, Including the following steps: 1) Acquire turbulence and wind speed information of the wind turbine during operation; 2) Compare the turbulence information and wind speed information with the corresponding preset thresholds respectively; when both the turbulence information and wind speed information are greater than the corresponding preset thresholds, it is determined that the turbulence tail is raised and the turbulence tail actively cut-off control is entered. In step 2), the active cut-out control of turbulent tailing includes torque commands and pitch commands for the unit; the torque command is interpolated by a slope decrease or by speed torque; the pitch command is a fixed rate or interpolated by pitch angle and pitch rate. Following step 2), the method for actively controlling and exiting turbulent tailing is also included: After the torque and pitch commands are executed, the turbulence and wind speed information of the unit are used to make a judgment. If the turbulence and wind speed conditions of the unit meet the reset and start-up requirements, the unit will reset and start up and perform the normal start-up and power generation process. Otherwise, the unit will continue to be shut down and wait. Command execution in place means that, through open-loop design of pitch and torque, the torque command decreases to zero according to the time slope or is interpolated according to the generator speed, while waiting for the pitch command to be executed in place.
2. The active cut-out control method for turbulent tailing of wind turbine units according to claim 1, characterized in that, In step 2), if the average wind speed value of the 300s sliding window filter is greater than the rated wind speed + 2m / s, and the estimated turbulence value of the 3s sliding window filter is greater than 1.5 times the design turbulence of the wind field, then turbulence tailing is determined.
3. An active cut-out control system for turbulent tailing of a wind turbine generator, used to execute the steps of the active cut-out control method for turbulent tailing of a wind turbine generator as described in any one of claims 1 to 2, characterized in that, include: The first module is used to acquire turbulence and wind speed information of the wind turbine during operation. The second module is used to compare turbulence information and wind speed information with corresponding preset thresholds respectively; When both turbulence information and wind speed information are greater than the corresponding preset thresholds, turbulence tailing is determined, and active turbulence tailing cutoff control is initiated.
4. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is run by the processor, it executes the steps of the active cut-out control method for turbulent tailing of wind turbine units as described in any one of claims 1 to 2.
5. A computer device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that, When the computer program is run by the processor, it executes the steps of the active cut-out control method for turbulent tailing of wind turbine units as described in any one of claims 1 to 2.