Torsional deformation correction system, blade, wind generating set and control method
By installing a torsional deformation correction system on the wind turbine blades, the torsional deformation is measured and corrected in real time, which solves the problem of blade vibration and load and improves the stability of the impeller.
Patent Information
- Application Number
- CN202311285090.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-09-28
- Publication Date
- 2025-01-24
Smart Images
Figure CN119353144A_ABST
Abstract
Description
Technical Field
[0001] The present application belongs to the technical field of wind power generation, and in particular relates to a torsional deformation correction system, a blade, a wind power generator set and a control method. Background Art
[0002] As the diameter of wind turbine impellers continues to increase, blade flexibility further increases, blade aeroelastic damping rapidly decreases, and the risk of impeller stability becomes increasingly prominent. Blade vibration has become a key factor in unit safety. The essence of blade vibration is often the problem of negative aerodynamic damping, which manifests itself in that when the blade vibrates at a certain frequency, a specific vibration mode often causes aerodynamic forces to exert positive work on the structure, resulting in a continuous injection of aerodynamic energy into the structure, thereby inducing a large amplitude in the bending direction of the blade. The torsional deformation of the blade cross section is an important factor causing negative aerodynamic damping of the blade. According to experience, increasing the torsional stiffness of the blade can effectively increase the aerodynamic damping of the blade, thereby solving the problem of blade vibration from the root.
[0003] Currently, the torsional stiffness of blades is often increased by increasing the stiffness of blade materials or increasing the cross-sectional size of blades. However, both of the above methods will lead to a significant increase in blade size and cost. Summary of the invention
[0004] The embodiments of the present application provide a torsional deformation correction system, a blade, a wind turbine generator set, a control method, a device, a equipment, a storage medium and a program, which can correct the torsional deformation of the blade, thereby reducing the blade vibration and reducing the blade load.
[0005] In a first aspect, an embodiment of the present application provides a torsional deformation correction system for a blade, wherein the blade includes a shell and blade attachments arranged in pairs, wherein the shell includes a blade tip portion and a blade root portion opposite to each other in its own axial direction, and the blade attachment includes at least one of a web and a main beam, and the system includes:
[0006] A correction device comprises a first driving member, a second driving member and a plurality of force-applying unit groups distributed along the axial direction, each force-applying unit group comprises a first force-applying unit and a second force-applying unit, each first force-applying unit and each second force-applying unit comprises a rope and a tension steering mechanism arranged oppositely in a first direction, one of the oppositely arranged tension steering mechanisms is arranged on one of the blade attachments arranged in a pair, and the other of the oppositely arranged tension steering mechanisms is arranged on the other of the blade attachments arranged in a pair, the first direction intersects with the axial direction, one rope end of the rope is connected to one of the oppositely arranged tension steering mechanisms, and the other rope end of the rope is connected to the other of the oppositely arranged tension steering mechanisms, the main rope of the rope in the first force-applying unit is transmission-connected to the first driving member, the main rope of the rope in the second force-applying unit is transmission-connected to the second driving member, and the tension steering mechanisms in the force-applying unit group are located at the same measuring point section of the blade, and the measuring point section is the cross section of the blade along the axial direction;
[0007] A sensor module is disposed on the blade, and the sensor module is configured to collect torsional deformation information of the blade;
[0008] The controller is configured to control the movement of the first driving member and the second driving member according to the torsional deformation information, so as to drive the tension steering mechanism arranged diagonally in the measuring point section to apply a correction force couple for correcting the torsional deformation of the blade to the paired blade attachments.
[0009] In a second aspect, an embodiment of the present application provides a blade, comprising:
[0010] A casing, wherein the casing includes a blade tip portion and a blade root portion opposite to each other in its axial direction;
[0011] Blade attachments, which are arranged in pairs and are arranged in the shell, and the blade attachments include at least one of a web and a main beam;
[0012] As the torsional deformation correction system of the first aspect.
[0013] In a third aspect, an embodiment of the present application provides a wind turbine generator set, comprising: a blade as described in the second aspect.
[0014] In a fourth aspect, an embodiment of the present application provides a torsional deformation correction control method, which is applied to the controller of the first aspect, and the method includes:
[0015] Obtaining torsional deformation information of a plurality of measuring point cross sections in the blade, wherein the torsional deformation information includes a torsional angle and a torsional deformation direction;
[0016] In response to the presence of a deformed measuring point section having a torsion angle greater than an angle threshold, determining a target correction angle required for the blade based on torsion deformation information of the deformed measuring point section;
[0017] Determining a target correction couple corresponding to the blade based on the target correction angle;
[0018] determining a first corrective torque corresponding to the first motor and a second corrective torque corresponding to the second motor based on the target corrective couple;
[0019] The first motor and the second motor are controlled to output the first correction torque and the second correction torque respectively, so as to drive the pulling force steering mechanisms arranged diagonally in the cross sections of the multiple measuring points to apply the target correction couple to the blade attachments arranged in pairs.
[0020] In a fifth aspect, an embodiment of the present application provides a torsional deformation correction control device, which is applied to the controller of the first aspect, and the device includes:
[0021] An acquisition module is used to acquire torsional deformation information of a plurality of measuring point cross sections in a blade, wherein the torsional deformation information includes a torsional angle and a torsional deformation direction;
[0022] A correction angle determination module, for determining a target correction angle required for the blade based on torsional deformation information of the deformation measuring point section in response to the presence of a deformation measuring point section having a torsion angle greater than an angle threshold;
[0023] A correction couple determination module, used for determining a target correction couple corresponding to the blade based on a target correction angle;
[0024] a correction torque determination module, configured to determine a first correction torque corresponding to the first motor and a second correction torque corresponding to the second motor based on the target correction couple;
[0025] The control module is used to control the first motor and the second motor to output the first correction torque and the second correction torque respectively, so as to drive the diagonally arranged tension steering mechanisms in the cross sections of multiple measuring points to apply target correction couples to the paired blade attachments.
[0026] In a sixth aspect, an embodiment of the present application provides an electronic device, the device comprising: a processor and a memory storing computer program instructions;
[0027] When the processor executes the computer program instructions, the torsional deformation correction control method as described in the fourth aspect is implemented.
[0028] In a seventh aspect, an embodiment of the present application provides a computer-readable storage medium having computer program instructions stored thereon. When the computer program instructions are executed by a processor, the torsional deformation correction control method of the fourth aspect is implemented.
[0029] In an eighth aspect, an embodiment of the present application provides a computer program product. When the instructions in the computer program product are executed by a processor of an electronic device, the electronic device executes the torsional deformation correction control method as described in the fourth aspect.
[0030] The torsional deformation correction system, blade, wind turbine generator set, control method, device, equipment, storage medium and program of the embodiment of the present application, the system includes a correction device, a sensor module and a controller, the sensor module measures the torsional deformation information of the blade in real time, and transmits the torsional deformation information to the controller, the controller determines the correction force information for correcting the torsional deformation according to the torsional deformation information, and generates control instructions for the first drive member and the second drive member in the correction device based on the correction force information, the first drive member and the second drive member move according to the control instruction to drive the tension steering mechanism arranged diagonally in the measuring point section to apply the correction force couple for correcting the torsional deformation of the blade to the paired blade accessories, so that the torsional deformation of the blade can be reduced, thereby reducing the blade vibration and reducing the blade load. BRIEF DESCRIPTION OF THE DRAWINGS
[0031] In order to more clearly illustrate the technical solution of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.
[0032] Figure 1(a) is a schematic longitudinal section of a blade;
[0033] Figure 1(b) is a schematic cross-sectional view of a blade;
[0034] Figure 2 is a schematic diagram of a torsional deformation correction system provided in an embodiment of the present application;
[0035] Figure 3 is a schematic diagram of a cross section of a measuring point provided in an embodiment of the present application;
[0036] Figure 4 is a top view of a tension steering mechanism 421 provided in an embodiment of the present application;
[0037] Figure 5 is a side view of the tension steering mechanism 421 provided in the embodiment of the present application
[0038] Figure 6 is a schematic diagram of a locking assembly 425 provided in an embodiment of the present application;
[0039] Figure 7 It is a flow chart of a torsional deformation correction control method provided in an embodiment of the present application;
[0040] Figure 8 is a control logic diagram of a controller provided in an embodiment of the present application;
[0041] Fig. 9 is a schematic diagram of a torsional deformation correction control device provided in an embodiment of the present application;
[0042] Fig.10 It is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION
[0043] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating the examples of the present application.
[0044] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.
[0045] The embodiment of the present application provides a torsional deformation correction system, which is applied to a blade to correct the torsional deformation of the blade to reduce the blade vibration caused by the torsional deformation of the blade. The blade includes a shell and a pair of blade attachments, the shell includes a blade tip and a blade root portion opposite to each other in its own axial direction, and the blade attachment includes at least one of a web and a main beam.
[0046] Exemplarily, see FIG1 for a schematic diagram of a blade provided in an embodiment of the present application, wherein FIG1(a) is a schematic diagram of a longitudinal section of the blade, and FIG1(b) is a schematic diagram of a cross-sectional view of the blade. As shown in FIG1(a), the blade includes a shell 10, and the shell 10 includes a blade tip portion 101 and a blade root portion 102 that are opposite in its own axial direction. As shown in FIG1(b), the shell 10 of the blade includes a web and a main beam arranged in pairs, wherein the web arranged in pairs may include a leading edge web 21 and a trailing edge web 22, and the main beam arranged in pairs may include a windward main beam 31 and a leeward main beam 32.
[0047] In some embodiments of the present application, a torsional deformation correction system may include a correction device, a sensor module, and a controller.
[0048] Wherein, the correction device is arranged inside the shell of the blade, including a first driving member, a second driving member and a plurality of force-applying unit groups distributed along the axial direction, each force-applying unit group includes a first force-applying unit and a second force-applying unit, each first force-applying unit and each second force-applying unit include a rope and a tension steering mechanism arranged relatively in the first direction, one of the relatively arranged tension steering mechanisms is arranged on one of the blade attachments arranged in a pair, and the other of the relatively arranged tension steering mechanisms is arranged on the other of the blade attachments arranged in a pair, the first direction intersects with the axial direction, one rope end of the rope is connected to one of the relatively arranged tension steering mechanisms, and the other rope end of the rope is connected to the other of the relatively arranged tension steering mechanisms, the main rope of the rope in the first force-applying unit is transmission-connected to the first driving member, the main rope of the rope in the second force-applying unit is transmission-connected to the second driving member, and the tension steering mechanisms in the force-applying unit group are located at the same measuring point section of the blade, and the measuring point section is the cross section of the blade along the axial direction;
[0049] The sensor module is arranged on the blade, and is configured to collect torsional deformation information of the blade, wherein the torsional deformation information includes but is not limited to torsional deformation direction, torsional deformation amount, etc.
[0050] The controller is configured to control the movement of the driving member according to the torsional deformation information, so as to drive the plurality of force applying units to apply a correction force for correcting the torsional deformation of the blade to one of the paired blade attachments.
[0051] The function of the torsional deformation correction system provided in the embodiment of the present application is to correct the torsional deformation of the blade. The principle is to set a first force unit and a second force unit on the cross-section of the blade measuring point. The first force unit and the second force unit each include a group of relatively arranged tension steering mechanisms, wherein a tension steering mechanism in the first force unit is diagonally arranged with a tension steering mechanism in the second force unit, and another tension steering mechanism in the first force unit is diagonally arranged with another tension steering mechanism in the second force unit. Based on this, the torsional deformation information of the blade can be collected through the sensor module, and the torsional The deformation information is transmitted to the controller, and the controller determines the correction force information for correcting the torsional deformation according to the torsional deformation information, and generates control instructions for the first driving member and the second driving member in the correction device based on the correction force information. The first driving member and the second driving member move according to the control instructions to drive the tension generated by the rope, and the generated tension acts on a pair of tension steering mechanisms diagonally arranged on the cross-section of the measuring point respectively. Through this pair of diagonally arranged tension steering mechanisms, the tension can be converted into a pair of lateral forces to form a pair of correction force couples applied to the blade attachment, thereby realizing the correction of the torsional deformation of the blade.
[0052] In some embodiments of the present application, taking the application of the torsional deformation correction system to the blade shown in FIG. 1 as an example, see Figure 2 This is a schematic diagram of the layout of the torsional deformation correction system in the measuring point section, as shown in Figure 2 As shown, the first force applying unit 41 and the second force applying unit 42 are both arranged on the web, wherein the first force applying unit includes a rope 411 and a tension steering mechanism 412 and a tension steering mechanism 413 arranged oppositely, and the second force applying unit includes a rope 421 and a tension steering mechanism 422 and a tension steering mechanism 423 arranged oppositely, the tension steering mechanism 412 and the tension steering mechanism 422 are both arranged on the surface of the leading edge web 21, the tension steering mechanism 413 and the tension steering mechanism 423 are both arranged on the surface of the trailing edge web 22, the tension steering mechanism 412 and the tension steering mechanism 423 are arranged diagonally, and the tension steering mechanism 413 and the tension steering mechanism 422 are arranged diagonally. Figure 2 As shown, when the first driving member and the second driving member pull the tension steering mechanism 412 and the tension steering mechanism 423 respectively, a corrective force F1 is applied to the leading edge web 21 by pulling the tension steering mechanism 412, and a corrective force F2 is applied to the trailing edge web 22 by pulling the tension steering mechanism 423, and F1 and F2 are equal in magnitude, opposite in direction and parallel, so that F1 and F2 form a pair of corrective couples, which can make the blade produce a couple moment M, and the torsional deformation in the opposite direction can be corrected through the couple moment M.
[0053] In some other embodiments of the present application, taking the application of the torsional deformation correction system to the blade shown in FIG. 1 as an example, see Figure 3 This is another schematic diagram of the layout of the torsional deformation correction system in the measuring point section, such as Figure 3 As shown, the first force applying unit 41 and the second force applying unit 42 are both arranged on the main beam, wherein the first force applying unit includes a rope 411 and a tension steering mechanism 412 and a tension steering mechanism 413 arranged oppositely, and the second force applying unit includes a rope 421 and a tension steering mechanism 422 and a tension steering mechanism 423 arranged oppositely, the tension steering mechanism 412 and the tension steering mechanism 422 are both arranged on the surface of the windward main beam 31, the tension steering mechanism 413 and the tension steering mechanism 423 are both arranged on the surface of the leeward main beam 32, the tension steering mechanism 412 and the tension steering mechanism 423 are arranged diagonally, and the tension steering mechanism 413 and the tension steering mechanism 422 are arranged diagonally. Figure 3 As shown, when the first driving member and the second driving member pull the tension steering mechanism 412 and the tension steering mechanism 423 respectively, a corrective force F1 is applied to the leeward main beam 32 by pulling the tension steering mechanism 413, and a corrective force F2 is applied to the windward main beam 31 by pulling the tension steering mechanism 422. F1 and F2 are equal in magnitude, opposite in direction and parallel, so that F1 and F2 form a pair of corrective couples. This pair of corrective couples can make the blades produce a couple moment M, and the torsional deformation in the opposite direction can be corrected through the couple moment M.
[0054] Optionally, since the main beam of the blade has a certain curvature, in order to facilitate the installation of the tension steering mechanism and ensure that the tension steering mechanism installed on the main beam can generate a force couple, when the first force applying unit and the second force applying unit are arranged on the main beam, each tension steering mechanism can be Figure 3 The transfer platform 43 shown is arranged on the main beam.
[0055] The torsional deformation correction system provided in this embodiment includes a correction device, a sensor module and a controller. The sensor module measures the torsional deformation information of the blade in real time, and transmits the torsional deformation information to the controller. The controller determines the correction force information for correcting the torsional deformation according to the torsional deformation information, and generates control instructions for the first driving member and the second driving member in the correction device based on the correction force information. The first driving member and the second driving member move according to the control instructions to drive the tension steering mechanism arranged diagonally in the measuring point section to apply a correction force couple for correcting the torsional deformation of the blade to the paired blade attachments. In this way, the torsional deformation of the blade can be reduced, thereby reducing the blade vibration and reducing the blade load.
[0056] In addition, when using the torsional deformation correction system provided in the embodiment of the present application to achieve vibration reduction and load reduction of the blade, it will not be subject to boundary constraints such as the deformation curvature, centrifugal force, and space of the blade. The torsional deformation correction system is installed inside the blade shell and does not affect the aerodynamic shape of the blade. Moreover, an independent system is used for correction, and no load transfer will occur.
[0057] Furthermore, by correcting the torsional deformation, the maximum stress level of the blade cross section can be reduced, and blade damage caused by extreme working conditions can be avoided. By correcting the torsional deformation, the stress amplitude of the blade cross section can be reduced, fatigue can be reduced, and the blade service life can be increased. By correcting the torsional deformation, blade deformation can be reduced and the risk of tower sweep during blade operation can be avoided. By correcting the torsional deformation, the blade vibration level can also be reduced, and the operating stability and reliability of the entire machine can be improved.
[0058] In some possible embodiments of the present application, the structures of the tension steering mechanisms used in the torsional deformation correction system are the same, and the components of each tension steering mechanism may include: an anchor assembly and a reversing assembly. The anchor assembly and the reversing assembly are both arranged on the surface of the blade attachment. The rope end connected to the tension steering mechanism in the rope is connected to the anchor assembly, and at least part of the main rope in the rope connected to the anchor assembly is arranged around the reversing assembly, so that the part of the rope away from the anchor assembly converges to the driving member connected to the rope. Among them, the main rope in the rope refers to the other part except the rope end.
[0059] Among them, the anchoring assembly is used to anchor the rope end connected to the tension steering mechanism in the rope, and the reversing assembly is used to steer the rope, that is, one end of the rope is connected to the anchoring assembly, and the other end is reversed by the reversing assembly and extends in the direction of the driving member.
[0060] The reason why a reversing assembly is set in the tension steering mechanism is that when the driving part moves, the force transmitted to the position of the tension steering mechanism through the rope is a tensile force along the radial direction of the blade, that is, a force parallel to the installation position of the tension steering mechanism, and the correction of the torsional deformation of the blade requires a corrective force in the chordal or thickness direction, that is, a force perpendicular to the installation position of the tension steering mechanism. Therefore, in order to apply a corrective force to the installation position of the tension steering mechanism, the reversing assembly is used to reverse the direction of the force, thereby changing the direction of the force.
[0061] In some embodiments of the present application, when the first force applying unit and the second force applying unit are arranged on the web, the tension steering mechanism 412 arranged on the leading edge web 21 is taken as an example, see Figure 4 , is a top view of the tension steering mechanism 412, and the top view direction is from the blade tip to the blade root. Figure 4As shown, the tension steering mechanism 412 includes an anchoring assembly 4121 and a reversing assembly 4122, wherein the anchoring assembly 4121 and the reversing assembly 4122 are both arranged on the leading edge web 21, wherein one rope end of the rope 411 is connected to the anchoring assembly 4121, and the main rope of the rope 411 is arranged around a portion of the reversing assembly 4122, so that the rope end of the rope 411 away from the anchoring assembly 4121 is converted from extending in the chord direction to extending in the blade root direction, so that the force transmitted from the blade root through the rope 411 to the anchoring assembly 4121 can be converted from radial tension to lateral force.
[0062] In some possible implementations of the present application, the anchoring assembly and the reversing assembly of each tension steering mechanism may be arranged on the blade attachment by a non-detachable connection method, wherein the non-detachable connection method includes but is not limited to welding, gluing, riveting, etc.
[0063] By setting them in a non-detachable connection mode, the anchoring assembly and the reversing assembly can be more firmly set on the blade attachment, thereby improving the installation reliability of the anchoring assembly and the reversing assembly.
[0064] In some possible embodiments of the present application, the anchoring assembly and the reversing assembly of each tension steering mechanism can also be set on the blade attachment through a detachable connection method, wherein the detachable connection method includes but is not limited to threaded connection, pin connection, elastic deformation connection, lock connection, plug-in connection, etc.
[0065] By setting it in a detachable connection mode, the anchoring component and the reversing component can be easily replaced.
[0066] In some possible implementations of the present application, components of the anchor assembly of the tension steering mechanism may include:
[0067] An anchor support, arranged on the surface of the blade attachment;
[0068] An anchor wheel, arranged on the anchor support and rotatably connected to the anchor support;
[0069] Wherein, a rope end in the rope connected with the tension steering mechanism is provided with a sleeve, and the sleeve is sleeved on the anchor wheel.
[0070] In some embodiments of the present application, the material of the ring may be a wear-resistant material, including but not limited to carbon steel, alloy steel, stainless steel, high-strength steel, etc.
[0071] In some embodiments of the present application, when the first force applying unit and the second force applying unit are arranged on the web, the tension steering mechanism 412 arranged on the leading edge web 21 is taken as an example, see Figure 5 , which is a side view of the tension steering mechanism 412, as shown Figure 5As shown, the anchor assembly 4121 may include an anchor support 41211 and an anchor wheel 41212. The anchor support 41211 is arranged on the leading edge web 21, and the anchor wheel 41212 is supported on the anchor support 41211 and is rotatably connected to the anchor support 41211. A ring 4111 is arranged at one end of the rope 411 connected to the tension steering mechanism 412, and the ring 4111 is sleeved on the anchor wheel 41212.
[0072] In the above manner, the rope is connected to the anchor assembly by a sleeve, which can prevent the rope from being excessively bent and worn.
[0073] In some possible implementations of the present application, components of the reversing assembly of the tension steering mechanism may include:
[0074] A reversing support, arranged at the blade attachment;
[0075] A reversing wheel, arranged on the reversing support and rotatably connected to the reversing support;
[0076] Among them, at least part of the main rope of the rope connected to the tension transmission mechanism is arranged around the reversing wheel, so that the part of the rope away from the anchoring assembly converges to the driving member connected to the rope.
[0077] In some embodiments of the present application, Figure 5 As shown, the reversing assembly 4122 in the tension steering mechanism 412 may include a reversing support 41221 and a reversing wheel 41222, wherein the reversing support 41221 is arranged on the leading edge web 21, and the reversing wheel 41222 is supported on the reversing support 41221 and is rotatably connected to the reversing support 41221. Part of the main rope of the rope 411 is arranged around the reversing wheel 41222, so that the part of the rope 411 away from the anchor assembly 4121 is converged to the first driving member connected to the rope 411 at the blade root.
[0078] In this way, by steering the rope through the steering wheel, the force transmitted through the rope can be converted from the radial tension of the blade into a lateral force.
[0079] In some possible implementations of the present application, the first driving member includes a first driving motor, the first driving motor has an output shaft, and at least part of the main ropes in the ropes drivingly connected to the first driving member are wound around the output shaft of the first driving motor;
[0080] The second driving member comprises a second driving motor having an output shaft, and at least part of the main ropes in the ropes drivingly connected to the second driving member are wound around the output shaft of the second driving motor.
[0081] By winding the main rope of the rope around the output shaft of the driving motor, when the output shaft of the driving motor rotates, only one side of the rope is pulled in, while the other side of the rope is loosened, so that tension is only generated on one side of the tension steering mechanism. Through the cooperation of two driving motors, the diagonally arranged tension transmission mechanism can generate tension, thereby forming a corrective force couple.
[0082] In some possible embodiments of the present application, since each force application unit includes a rope connected to a relatively arranged tension steering mechanism, and all ropes converge toward the blade root to be connected to the driving member, in order to avoid entanglement of multiple ropes, the correction device may further include a locking assembly, which is used to gather all ropes connected to the same driving member into a rope bundle, and connect the rope bundle to the driving member, thereby avoiding rope entanglement.
[0083] In some embodiments of the present application, see Figure 5 After the rope 411 is connected to the tension steering mechanism 412, it is gathered with other ropes from the blade tip direction through the locking assembly 44 to form a rope bundle.
[0084] In some possible implementations of the present application, the locking assembly may include an upper wire collection ring and a lower wire collection ring that are symmetrically arranged, and both ends of the upper wire collection ring and the lower wire collection ring are locked by bolts.
[0085] In some embodiments of the present application, see Figure 6 The locking assembly 44 includes an upper wire collection ring 441 and a lower wire collection ring 442 which are symmetrically arranged. Both ends of the upper wire collection ring 441 and the lower wire collection ring 442 are locked by bolts 443.
[0086] The locking assembly is used in conjunction with the upper wire collection ring, the lower wire collection ring and the bolt, so that the locking assembly can be suitable for locking and installing ropes of different thicknesses, thereby improving the overall applicability of the product.
[0087] In some possible implementations of the present application, the controller may be a programmable logic controller (PLC).
[0088] In practical applications, users can write a program for controlling the drive components based on the blade torsional deformation information, download the program to the PLC, and the PLC can realize the designed functional requirements.
[0089] PLC has strong anti-interference ability, so using PLC can improve the reliability of the torsional deformation correction system.
[0090] Based on the torsional deformation correction system provided in the above embodiment, the present application also provides a specific implementation method of the blade. Please refer to the following embodiment.
[0091] The blade provided in the embodiment of the present application comprises: a shell, wherein the shell comprises a blade tip portion and a blade root portion opposite to each other in its axial direction;
[0092] Blade attachments, which are arranged in pairs and are arranged in the shell, and the blade attachments include at least one of a web and a main beam;
[0093] Torsion correction system.
[0094] Among them, the structure of the torsional deformation correction system is as described above, and will not be repeated here to avoid repetition.
[0095] In some possible embodiments of the present application, the blade attachment includes a web, and the relatively arranged tension deflection mechanisms are symmetrically distributed along the chord direction of the blade, and each tension deflection mechanism is arranged on a surface of one of the paired webs facing the other in the chord direction.
[0096] In some possible embodiments of the present application, the blade attachment includes a main beam, and the relatively arranged tension deflection mechanisms are symmetrically distributed along the thickness direction of the blade, and each tension deflection mechanism is arranged on the surface of one of the paired main beams facing the other on the thickness.
[0097] The blade provided in this embodiment includes a torsional deformation correction system, which includes a correction device, a sensor module and a controller. The sensor module measures the torsional deformation information of the blade in real time, and transmits the torsional deformation information to the controller. The controller determines the correction force information for correcting the torsional deformation according to the torsional deformation information, and generates control instructions for the first drive member and the second drive member in the correction device based on the correction force information. The first drive member and the second drive member move according to the control instructions to drive the tension steering mechanism diagonally arranged in the measuring point section to apply a correction force couple for correcting the torsional deformation of the blade to the paired blade accessories. In this way, the torsional deformation of the blade can be reduced, thereby reducing the blade vibration and reducing the blade load.
[0098] Based on the blades provided in the above embodiments, the present application also provides a specific implementation method of a wind turbine generator set, as shown in the following embodiments.
[0099] A wind turbine generator set provided in an embodiment of the present application may include: a blade as described above, wherein the blade includes a shell, blade accessories, and a torsional deformation correction system. The structure of the blade can be found in the above description, and will not be described here again to avoid repetition.
[0100] In addition to blades, a wind turbine generator set may also include major subsystems such as a nacelle and a tower, among which the nacelle includes a generator, a transmission system, etc.
[0101] The wind turbine generator set provided in this embodiment includes a torsional deformation correction system, which includes a correction device, a sensor module and a controller. The sensor module measures the torsional deformation information of the blade in real time, and transmits the torsional deformation information to the controller. The controller determines the correction force information for correcting the torsional deformation according to the torsional deformation information, and generates control instructions for the first drive member and the second drive member in the correction device based on the correction force information. The first drive member and the second drive member move according to the control instructions to drive the tension steering mechanism arranged diagonally in the measuring point section to apply a correction force couple for correcting the torsional deformation of the blade to the paired blade attachments. In this way, the torsional deformation of the blade can be reduced, thereby reducing the blade vibration and reducing the blade load.
[0102] Based on the torsional deformation correction system provided in the above embodiment, the present application also provides a specific implementation of a torsional deformation correction control method. Please refer to the following embodiment.
[0103] See also Figure 7 , is a flow chart of a torsional deformation correction control method provided in an embodiment of the present application, the method is applied to the controller in the torsional deformation correction system provided in any of the above embodiments, and is used to control the correction device in the torsional deformation correction system to correct the blade, such as Figure 7 As shown, the method may include the following steps S71-S75.
[0104] S71. Obtain torsional deformation information of a plurality of measuring point cross sections in the blade, where the torsional deformation information includes a torsional angle and a torsional deformation direction.
[0105] The blade includes multiple measuring point sections, each measuring point section includes a tension steering mechanism arranged diagonally, wherein the torsional deformation information of the measuring point section can be collected by a sensor module in the torsional deformation correction system, and the sensor module collects the torsional deformation information of the multiple measuring point sections in the blade, and transmits the collected torsional deformation information to the controller, so that the controller can obtain the torsional deformation information of the multiple measuring point sections in the blade.
[0106] S72. In response to the presence of a deformation measuring point section having a torsion angle greater than an angle threshold, determine a target correction angle required for the blade based on torsion deformation information of the deformation measuring point section.
[0107] The deformation threshold can be set by the user according to actual conditions.
[0108] The deformation measuring point section refers to the measuring point section in the blade where the torsional deformation is greater than the phase change threshold. When there is a deformation measuring point section in the blade, it means that the blade has undergone torsional deformation and needs to be corrected.
[0109] The torsional deformation of the blade usually causes a certain torsion angle of the blade. The torsion angle of the blade can be determined based on the torsion deformation information of the section of the deformation measuring point. Furthermore, the correction angle required for the torsion deformation of the blade, that is, the target correction angle, can be determined based on the torsion angle.
[0110] S73. Determine a target correction couple corresponding to the blade based on the target correction angle.
[0111] S74. Determine a first corrective torque corresponding to the first motor and a second corrective torque corresponding to the second motor based on the target corrective couple.
[0112] S75. Control the first motor and the second motor to output the first corrective torque and the second corrective torque respectively, so as to drive the tension steering mechanisms arranged diagonally in the cross sections of the multiple measuring points to apply the target corrective force couple to the blade attachments arranged in pairs.
[0113] The torsional deformation correction control method provided in the embodiment of the present application obtains the torsional deformation information of multiple measuring point sections in the blade, the torsional deformation information includes the torsional deformation amount and the torsional deformation direction, in response to the presence of a deformed measuring point section whose torsional deformation amount is greater than the deformation amount threshold, determines the target correction angle required for the blade based on the torsional deformation information of the deformed measuring point section, determines the target correction force couple corresponding to the blade based on the target correction angle, determines the first correction torque corresponding to the first motor and the second correction torque corresponding to the second motor based on the target correction force couple, and controls the first motor and the second motor to output the first correction torque and the second correction torque respectively, so as to drive the tension steering mechanism arranged diagonally in the multiple measuring point sections to apply the target correction force couple to the blade attachment arranged in pairs. According to this embodiment, the controller can issue instructions to the first driving member and the second driving member based on the torsional deformation information of the blade, so that the first driving member and the second driving member apply a pair of correction force couples on the surface of the blade attachment through the rope and the tension steering mechanism, thereby suppressing the torsional deformation of the blade and reducing vibration and load.
[0114] In some possible implementations of the present application, determining the torsional deformation information of the cross sections of multiple measuring points in the blade may include:
[0115] Obtaining the operating data of the wind turbine to which the blade belongs;
[0116] Input the operating data into the preset wind turbine model to obtain the simulation model corresponding to the wind turbine;
[0117] Obtaining actual torsional deformation information of any measuring point section among multiple measuring point sections;
[0118] The simulation model is corrected by using the actual torsional deformation information as reference information;
[0119] Based on the corrected simulation model, torsional deformation information corresponding to each measuring point section in the plurality of measuring point sections is determined.
[0120] Among them, the actual torsional deformation information of the measuring point section can be collected by the sensor module.
[0121] In the above manner, only a small number of sensors need to be set to collect the torsional deformation information of some measuring point sections, and the torsional deformation information of all measuring point sections can be determined based on the wind turbine model. In this way, the setting of sensors can be reduced and the hardware cost can be reduced.
[0122] In some possible implementations of the present application, determining a target correction angle corresponding to a blade based on torsional deformation information of a section at a deformation measurement point may include:
[0123] Obtain the sensitivity of each deformation measuring point section to torsional deformation respectively;
[0124] The deformation measuring point section with the highest sensitivity is determined as the target measuring point section;
[0125] The torsion angle in the torsion deformation information of the target measuring point section is determined as the target torsion angle;
[0126] The correction angle corresponding to the target twist angle is determined as the target correction angle corresponding to the blade.
[0127] In some embodiments of the present application, the sensitivity of each measuring point cross section to torsional deformation can be determined in advance, and a corresponding relationship between the measuring point cross section and the sensitivity can be set. In this way, after the deformation measuring point cross section is determined, the torsional deformation sensitivity corresponding to each deformation measuring point cross section can be determined based on the corresponding relationship.
[0128] The higher the sensitivity of the deformation measuring point section to torsional deformation, the more sensitive it is to torsional deformation, and the more accurate the corresponding torsional deformation information is. In this way, the correction effect can be optimized through the above method.
[0129] In some possible implementations of the present application, determining the target correction couple required for the blade based on the target correction angle may include:
[0130] Determine the target correction torque required for the target measuring point section based on the target correction angle and the torsional deformation direction of the target measuring point section;
[0131] Determining a first tension steering mechanism and a second tension steering mechanism in a cross section of a target measuring point for achieving a target corrective torque;
[0132] determining a moment arm according to a vertical distance between the first tension steering mechanism and the second tension steering mechanism;
[0133] Based on the target correction moment and lever arm, determine the correction couple corresponding to the cross section of the target measuring point;
[0134] The correction couple corresponding to the cross section of the target measuring point is determined as the target correction couple required for the blade.
[0135] In some embodiments of the present application, the vertical distance between the first tension steering mechanism and the second tension steering mechanism can be used as a lever arm, and the correction couple corresponding to the target measuring point cross section can be calculated according to the calculation formula: torque = force * lever arm, and then the correction couple corresponding to the target measuring point cross section can be used as the target correction couple of the blade.
[0136] Through the above method, an accurate target correction couple can be obtained.
[0137] In some embodiments of the present application, the torsional deformation correction system is applied to the blades of a wind turbine generator set, and the driving member is a driving motor as an example, see Figure 8 , is the control logic diagram of the controller for the drive motor, such as Figure 8 As shown, the control logic of the controller includes:
[0138] Acquire wind speed and other wind measurement data of the wind farm in real time, as well as wind turbine pitch angle, unit speed, unit power and other operating data of the wind turbine, and transfer these data to the simplified wind turbine model, and simulate the operating status of the wind turbine based on the wind turbine model;
[0139] The sensor module measures the torsional deformation information of some measuring point interfaces in real time, and inputs the torsional deformation information into the wind turbine model as a reference value, and automatically corrects the wind turbine model to ensure the most realistic state of the simulated blade, including the load state and deformation state;
[0140] According to the simulation results of the blade state, the torsional deformation information of the section of each measuring point of the blade is calculated;
[0141] If the torsional deformation of all measuring point sections does not exceed the preset deformation threshold, that is, there is no deformed measuring point section, no correction is required and the control logic ends;
[0142] If there is a deformed measuring point section whose torsional deformation exceeds the deformation threshold, the target correction angle is calculated, and the required correction torque of the target measuring point section is calculated in combination with the torque information of the target measuring point section calculated by the wind turbine model;
[0143] According to the correction moment of the cross section of the target measuring point, the correction couple of the cross section of the target measuring point is calculated by combining moment = force * arm;
[0144] Determine the optimal output torque of the first drive motor and the second drive motor according to the correction couple of the cross section of the target measuring point, and execute;
[0145] The output torque of the driving motor is converted into rope force, which is then converted into lateral force of the measuring point section through the tension steering mechanism;
[0146] A group of opposite lateral forces on the measuring point section forms a couple, which generates a torque and acts on the measuring point section, thereby achieving the purpose of torsion angle correction of the measuring point section.
[0147] Based on the torsional deformation correction control method provided in the above embodiment, the present application also provides a specific implementation of the torsional deformation correction control device. Please refer to the following embodiment.
[0148] See also Fig. 9 The torsional deformation correction control device provided in the embodiment of the present application includes the following modules:
[0149] An acquisition module 901 is used to acquire torsional deformation information of a plurality of measuring point cross sections in a blade, wherein the torsional deformation information includes a torsional angle and a torsional deformation direction;
[0150] A correction angle determination module 902 is used to determine a target correction angle required for the blade based on torsional deformation information of the deformation measuring point section in response to the presence of a deformation measuring point section having a torsion angle greater than an angle threshold;
[0151] A correction couple determination module 903, configured to determine a target correction couple corresponding to the blade based on a target correction angle;
[0152] A correction torque determination module 904, configured to determine a first correction torque corresponding to the first motor and a second correction torque corresponding to the second motor based on the target correction couple;
[0153] The control module 905 is used to control the first motor and the second motor to output the first correction torque and the second correction torque respectively, so as to drive the diagonally arranged tension steering mechanisms in the cross sections of multiple measuring points to apply target correction couples to the paired blade attachments.
[0154] In some possible implementations of the present application, the acquisition module 901 is specifically used to:
[0155] Obtaining the operating data of the wind turbine to which the blade belongs;
[0156] Input the operating data into the preset wind turbine model to obtain the simulation model corresponding to the wind turbine;
[0157] Obtaining actual torsional deformation information of any measuring point section among multiple measuring point sections;
[0158] The simulation model is corrected by using the actual torsional deformation information as reference information;
[0159] Based on the corrected simulation model, torsional deformation information corresponding to each measuring point section in the plurality of measuring point sections is determined.
[0160] In some possible implementations of the present application, the correction angle determination module 902 is specifically configured to:
[0161] Obtain the sensitivity of each deformation measuring point section to torsional deformation respectively;
[0162] The deformation measuring point section with the highest sensitivity is determined as the target measuring point section;
[0163] The torsion angle in the torsion deformation information of the target measuring point section is determined as the target torsion angle;
[0164] The correction angle corresponding to the target twist angle is determined as the target correction angle corresponding to the blade.
[0165] In some possible implementations of the present application, the correction couple determination module 903 is specifically used to:
[0166] Determine the target correction torque required for the target measuring point section based on the target correction angle and the torsional deformation direction of the target measuring point section;
[0167] Determining a first tension steering mechanism and a second tension steering mechanism in a cross section of a target measuring point for achieving a target corrective torque;
[0168] determining a moment arm according to a vertical distance between the first tension steering mechanism and the second tension steering mechanism;
[0169] Based on the target correction moment and lever arm, determine the correction couple corresponding to the cross section of the target measuring point;
[0170] The correction couple corresponding to the cross section of the target measuring point is determined as the target correction couple required for the blade.
[0171] The torsional deformation correction control device provided in the embodiment of the present application can achieve Figure 7-Figure 8 To avoid repetition, the various processes implemented by the method embodiment are not described here.
[0172] Fig.10 A schematic diagram of the hardware structure of an electronic device provided in an embodiment of the present application is shown.
[0173] The electronic device may include a processor 1001 and a memory 1002 storing computer program instructions.
[0174] Specifically, the processor 1001 may include a central processing unit (CPU), or an application specific integrated circuit (ASIC), or may be configured to implement one or more integrated circuits of the embodiments of the present application.
[0175] The memory 1002 may include a large capacity memory for data or instructions. By way of example and not limitation, the memory 1002 may include a hard disk drive (HDD), a floppy disk drive, a flash memory, an optical disk, a magneto-optical disk, a magnetic tape, or a universal serial bus (USB) drive or a combination of two or more of these. In appropriate cases, the memory 1002 may include a removable or non-removable (or fixed) medium. In appropriate cases, the memory 1002 may be inside or outside the integrated gateway disaster recovery device. In a specific embodiment, the memory 1002 is a non-volatile solid-state memory. The memory 1002 may include a read-only memory (ROM), a random access memory (RAM), a disk storage medium device, an optical storage medium device, a flash memory device, an electrical, optical, or other physical / tangible memory storage device. Therefore, typically, memory 1002 includes one or more tangible (non-transitory) computer-readable storage media (e.g., memory devices) encoded with software including computer-executable instructions, and when the software is executed (e.g., by one or more processors), it can perform the operations described in any one of the torsional deformation correction control methods in the above-mentioned embodiments.
[0176] The processor 1001 implements any one of the torsional deformation correction control methods in the above embodiments by reading and executing computer program instructions stored in the memory 1002 .
[0177] In one example, the electronic device may further include a communication interface 1003 and a bus 1010. Fig.10 As shown, the processor 1001, the memory 1002, and the communication interface 1003 are connected via a bus 1010 and communicate with each other.
[0178] The communication interface 1003 is mainly used to implement communication between various modules, devices, units and / or equipment in the embodiments of the present application.
[0179] Bus 1010 includes hardware, software or both, and the parts of online data flow billing equipment are coupled to each other. For example, but not limitation, bus may include accelerated graphics port (AGP) or other graphics bus, enhanced industrial standard architecture (EISA) bus, front-end bus (FSB), hypertransport (HT) interconnection, industrial standard architecture (ISA) bus, infinite bandwidth interconnection, low pin count (LPC) bus, memory bus, micro channel architecture (MCA) bus, peripheral component interconnection (PCI) bus, PCI-Express (PCI-X) bus, serial advanced technology attachment (SATA) bus, video electronics standard association local (VLB) bus or other suitable bus or two or more of these combinations. In appropriate cases, bus 1010 may include one or more buses. Although the present application embodiment describes and shows a specific bus, the present application considers any suitable bus or interconnection.
[0180] In addition, in combination with the torsional deformation correction control method in the above embodiment, the embodiment of the present application can provide a computer storage medium to implement. The computer storage medium stores computer program instructions; when the computer program instructions are executed by the processor, any one of the torsional deformation correction control methods in the above embodiment is implemented.
[0181] It should be clear that the present application is not limited to the specific configuration and processing described above and shown in the figures. For the sake of simplicity, a detailed description of the known method is omitted here. In the above embodiments, several specific steps are described and shown as examples. However, the method process of the present application is not limited to the specific steps described and shown, and those skilled in the art can make various changes, modifications and additions, or change the order between the steps after understanding the spirit of the present application.
[0182] The functional blocks shown in the above-described block diagram can be implemented as hardware, software, firmware or a combination thereof. When implemented in hardware, it can be, for example, an electronic circuit, an application specific integrated circuit (ASIC), appropriate firmware, a plug-in, a function card, etc. When implemented in software, the elements of the present application are programs or code segments that are used to perform the required tasks. The program or code segment can be stored in a machine-readable medium, or transmitted on a transmission medium or a communication link by a data signal carried in a carrier wave. "Machine-readable medium" can include any medium capable of storing or transmitting information. Examples of machine-readable media include electronic circuits, semiconductor memory devices, ROM, flash memory, erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, optical fiber media, radio frequency (RF) links, etc. The code segment can be downloaded via a computer network such as the Internet, an intranet, etc.
[0183] It should also be noted that the exemplary embodiments mentioned in this application describe some methods or systems based on a series of steps or devices. However, this application is not limited to the order of the above steps, that is, the steps can be performed in the order mentioned in the embodiment, or in a different order from the embodiment, or several steps can be performed simultaneously.
[0184] Aspects of the present disclosure are described above with reference to the flowchart and / or block diagram of the method, device (system) and computer program product according to the embodiment of the present disclosure. It should be understood that each box in the flowchart and / or block diagram and the combination of each box in the flowchart and / or block diagram can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device to produce a machine so that these instructions executed by the processor of the computer or other programmable data processing device enable the implementation of the function / action specified in one or more boxes of the flowchart and / or block diagram. Such a processor can be, but is not limited to, a general-purpose processor, a special-purpose processor, a special application processor, or a field programmable logic circuit. It can also be understood that each box in the block diagram and / or flowchart and the combination of boxes in the block diagram and / or flowchart can also be implemented by dedicated hardware that performs a specified function or action, or can be implemented by a combination of dedicated hardware and computer instructions.
[0185] The above is only a specific implementation of the present application. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, modules and units described above can refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here. It should be understood that the protection scope of the present application is not limited to this. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in the present application, and these modifications or replacements should be included in the protection scope of the present application.
Claims
1. A torsional deformation correction system for a blade, wherein the blade comprises a shell and blade attachments arranged in pairs, wherein the shell comprises a blade tip portion and a blade root portion opposite to each other in its own axial direction, and the blade attachment comprises at least one of a web and a main beam, wherein: include: A correction device, comprising a first driving member, a second driving member and a plurality of force-applying unit groups distributed along the axial direction, each of the force-applying unit groups comprising a first force-applying unit and a second force-applying unit, each of the first force-applying unit and each of the second force-applying unit comprising a rope and a tension steering mechanism arranged oppositely in a first direction, one of the oppositely arranged tension steering mechanisms being arranged on one of the blade attachments arranged in a pair, and the other of the oppositely arranged tension steering mechanisms being arranged on the other of the blade attachments arranged in a pair, the first direction intersects with the axial direction, one rope end of the rope is connected to one of the oppositely arranged tension steering mechanisms, and the other rope end of the rope is connected to the other of the oppositely arranged tension steering mechanisms, the main rope of the rope in the first force-applying unit is transmission-connected to the first driving member, the main rope of the rope in the second force-applying unit is transmission-connected to the second driving member, and the tension steering mechanisms in the force-applying unit group are located at the same measuring point section of the blade, and the measuring point section is the cross section of the blade along the axial direction; A sensor module is disposed on the blade, and the sensor module is configured to collect torsional deformation information of the blade; The controller is configured to control the movement of the first driving member and the second driving member according to the torsional deformation information, so as to drive the tension steering mechanism arranged diagonally in the measuring point section to apply a corrective force couple for correcting the torsional deformation of the blade to the paired blade attachments.
2. The torsional deformation correction system according to claim 1, characterized in that: The pulling force steering mechanism includes: An anchoring assembly, arranged on the surface tension steering mechanism tension steering mechanism anchoring assembly of the blade attachment; A reversing assembly, arranged on the surface of the blade attachment; Among them, the rope end connected to the tension steering mechanism is connected to the anchor assembly, and at least part of the main rope of the rope connected to the anchor assembly is arranged around the reversing assembly so that the part of the rope away from the anchor assembly converges to the driving member connected to the rope.
3. The torsional deformation correction system according to claim 2, characterized in that: The anchor assembly comprises: An anchor support, arranged on the surface of the blade attachment; An anchor wheel, disposed on the anchor support and rotatably connected to the anchor support; Wherein, a rope end of the rope connected to the tension steering mechanism is provided with a ring, and the ring is sleeved on the anchor wheel.
4. The torsional deformation correction system according to claim 2, characterized in that: The switching assembly comprises: A reversing support, arranged on the surface of the blade attachment; A reversing wheel, disposed on the reversing support and rotatably connected to the reversing support; Among them, at least part of the main rope of the rope connected to the tension transmission mechanism is arranged around the reversing wheel, so that the part of the rope away from the anchoring assembly converges to the driving member connected to the rope.
5. The torsional deformation correction system according to claim 1, characterized in that: The first driving member comprises a first driving motor, the first driving motor has an output shaft, and at least part of the main ropes in the ropes drivingly connected to the first driving member are wound around the output shaft of the first driving motor; The second driving member includes a second driving motor having an output shaft, and at least part of the main ropes of the ropes drivingly connected to the second driving member are wound around the output shaft of the second driving motor.
6. A blade, characterized in that: include: A casing, wherein the casing includes a blade tip portion and a blade root portion opposite to each other in its axial direction; Blade attachments, which are arranged in pairs and are arranged in the shell, and the blade attachments include at least one of a web and a main beam; A torsional deformation correction system as claimed in any one of claims 1 to 5.
7. The blade according to claim 6, characterized in that The blade attachment includes the web, the oppositely arranged tension deflection mechanisms are symmetrically distributed along the chord direction of the blade, and each of the tension deflection mechanisms is arranged on a surface of one of the paired webs facing the other in the chord direction; Alternatively, the blade attachment includes the main beam, the relatively arranged tension deflection mechanisms are symmetrically distributed along the thickness direction of the blade, and each of the tension deflection mechanisms is arranged on a surface of one of the paired main beams facing the other in the thickness.
8. A wind turbine generator set, characterized in that: include: A blade as claimed in claim 6 or 7.
9. A torsional deformation correction control method, characterized in that: Applied to the controller according to any one of claims 1 to 5, the method comprises: Acquire torsional deformation information of a plurality of measuring point cross sections in the blade, wherein the torsional deformation information includes a torsional angle and a torsional deformation direction; In response to the presence of a deformation measuring point section having a torsion angle greater than an angle threshold, determining a target correction angle required for the blade based on torsion deformation information of the deformation measuring point section; Determining a target correction couple corresponding to the blade based on the target correction angle; determining a first corrective torque corresponding to the first motor and a second corrective torque corresponding to the second motor based on the target corrective couple; The first motor and the second motor are controlled to output the first corrective torque and the second corrective torque respectively, so as to drive the tension steering mechanisms arranged diagonally in the sections of the multiple measuring points to apply the target corrective force couple to the blade attachments arranged in pairs.
10. The method according to claim 9, characterized in that The step of determining the torsional deformation information of the sections at multiple measuring points in the blade includes: Acquiring operating data of the wind turbine to which the blade belongs; Inputting the operating data into a preset wind turbine model to obtain a simulation model corresponding to the wind turbine group; Obtaining actual torsional deformation information of any measuring point cross section among the multiple measuring point cross sections; Using the actual torsional deformation information as reference information to correct the simulation model; Based on the modified simulation model, torsional deformation information corresponding to each measuring point cross section in the multiple measuring point cross sections is determined.
11. The method according to claim 9, characterized in that The determining of the target correction angle corresponding to the blade based on the torsional deformation information of the cross section of the deformation measuring point includes: Obtain the sensitivity of each deformation measuring point section to torsional deformation respectively; The deformation measuring point section with the highest sensitivity is determined as the target measuring point section; Determine the torsion angle in the torsion deformation information of the target measuring point cross section as the target torsion angle; A correction angle corresponding to the target twist angle is determined as a target correction angle corresponding to the blade.
12. The method according to claim 11, characterized in that The step of determining a target correction couple required for the blade based on the target correction angle comprises: Determining a target correction torque required for the target measuring point section based on the target correction angle and the torsional deformation direction of the target measuring point section; Determining a first tension steering mechanism and a second tension steering mechanism in the cross section of the target measuring point for achieving the target corrective torque; determining a moment arm according to a vertical distance between the first tension steering mechanism and the second tension steering mechanism; Based on the target correction moment and the lever arm, determining a correction couple corresponding to the target measuring point cross section; The correction couple corresponding to the target measuring point cross section is determined as the target correction couple required by the blade.
13. A torsional deformation correction control device, characterized in that: The controller according to any one of claims 1 to 5, wherein the device comprises: An acquisition module, used to acquire torsional deformation information of a plurality of measuring point cross sections in a blade, wherein the torsional deformation information includes a torsional angle and a torsional deformation direction; A correction angle determination module, configured to determine a target correction angle required for the blade based on torsional deformation information of the deformation measuring point section in response to the presence of a deformation measuring point section having a torsion angle greater than an angle threshold; A correction couple determination module, configured to determine a target correction couple corresponding to the blade based on the target correction angle; a correction torque determination module, configured to determine a first correction torque corresponding to the first motor and a second correction torque corresponding to the second motor based on the target correction couple; A control module is used to control the first motor and the second motor to output the first corrective torque and the second corrective torque respectively, so as to drive the tension steering mechanism arranged diagonally in the cross sections of the multiple measuring points to apply the target corrective force couple to the blade attachments arranged in pairs.
14. An electronic device, characterized in that: The device comprises: a processor and a memory storing computer program instructions; When the processor executes the computer program instructions, the torsional deformation correction control method as described in any one of claims 9 to 12 is implemented.
15. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer program instructions, and when the computer program instructions are executed by the processor, the torsional deformation correction control method according to any one of claims 9 to 12 is implemented.
16. A computer program product, characterized in that When the instructions in the computer program product are executed by a processor of an electronic device, the electronic device executes the torsional deformation correction control method as described in any one of claims 9 to 12.