Control method for a wind turbine and related device

Abstract

The application discloses a wind turbine control method and related device, the wind turbine includes a nacelle and a wheel, the wheel is connected with one side of the outer wall of the nacelle, and the wheel includes a plurality of blades. The method comprises: obtaining a wind speed measured value and a pitch angle of a target blade, the target blade is a blade in a clamped state;In the case that the wind speed measured value is in a first wind speed interval and the pitch angle is in a first angle interval, if the wheel is in a directly facing wind state, the vibration acceleration of a target component is obtained, the target component is at least one of the blade root of the blade and the nacelle, the first wind speed interval is from the maintainable wind speed of the wind turbine to the first wind speed, wherein the first wind speed is the specified wind speed when the wind turbine reaches the predetermined load;When the vibration acceleration exceeds the acceleration threshold, the operating condition of the nacelle or the wheel is adjusted to make the vibration acceleration lower than the acceleration threshold. The application provides a load reduction control scheme under the clamped fault condition.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of wind power generation, and particularly relates to a control method, device and equipment of a wind turbine generator system and a computer readable storage medium. BACKGROUND

[0002] As heavy equipment for long-period operation, the wind turbine generator system works in complex environment for a long time, and thus the operation stability and reliability of the wind turbine generator system need to be highlighted. However, due to various factors, the blades of the wind turbine generator system may have a jammed failure. How to reduce the load when the jammed failure occurs is a problem to be solved at present. SUMMARY

[0003] Embodiments of the present application provide a control method and related device of a wind turbine generator system, aiming to provide a load reduction control scheme under a jammed failure condition.

[0004] In one aspect, the present application provides a control method of a wind turbine generator system, the wind turbine generator system comprising a nacelle and an impeller, the impeller being connected to one side of an outer wall of the nacelle, and the impeller comprising a plurality of blades; the method comprising:

[0005] obtaining a wind speed measured value and a pitch angle of a target blade, the target blade being a blade in a jammed state;

[0006] if the impeller is in a headwind state, obtaining a vibration acceleration of a target component when the wind speed measured value is in a first wind speed interval and the pitch angle is in a first angle interval,

[0007] wherein the target component is at least one of a blade root of the blade and the nacelle, and the first wind speed interval is a wind speed interval from a maintainable wind speed of the wind turbine generator to a first wind speed, wherein the first wind speed is a specified wind speed when the wind turbine generator reaches a predetermined load;

[0008] adjusting an operating condition of the nacelle or the impeller to make the vibration acceleration lower than the acceleration threshold value when the vibration acceleration exceeds the acceleration threshold value.

[0009] Optionally, adjusting the operating condition of the nacelle or the impeller to make the vibration acceleration lower than the acceleration threshold value comprises:

[0010] adjusting a pitch angle of at least one non-target blade to an open state, and adjusting an impeller speed to a speed interval range corresponding to the open state, so as to make the vibration acceleration lower than the acceleration threshold value.

[0011] Optionally, adjusting the operating condition of the nacelle or the impeller to make the vibration acceleration lower than the acceleration threshold value comprises:

[0012] fine-tuning a yaw angle of the nacelle to make the vibration acceleration lower than the acceleration threshold value.

[0013] Optionally, after obtaining the measured wind speed and the pitch angle of the target blade, the method further comprises:

[0014] controlling the impeller to keep a side-to-wind state when the pitch angle is in a second angle interval smaller than the first angle interval and the measured wind speed is in a first wind speed sub-interval, wherein the first wind speed interval comprises the first wind speed sub-interval and a second wind speed sub-interval lower than the first wind speed sub-interval.

[0015] Optionally, after obtaining the measured wind speed and the pitch angle of the target blade, the method further comprises:

[0016] controlling the impeller to keep a head-to-wind state when the pitch angle is in the second angle interval and the measured wind speed is in the second wind speed sub-interval.

[0017] Optionally, the controlling the impeller to keep the side-to-wind state comprises:

[0018] controlling the nacelle to yaw in a cable-releasing direction so that the impeller is in the side-to-wind state.

[0019] Optionally, after obtaining the measured wind speed and the pitch angle of the target blade, the method further comprises:

[0020] sending a fault maintenance prompt information to a maintenance personnel when the measured wind speed is lower than a maintainable wind speed.

[0021] In another aspect, the embodiments of the present application provide a control device of a wind turbine generator system, the wind turbine generator system comprising a nacelle and an impeller connected to one side of an outer wall of the nacelle, the impeller comprising a plurality of blades, the device comprising:

[0022] a first obtaining module configured to obtain a measured wind speed and a pitch angle of a target blade, the target blade being a blade in a stalled state;

[0023] a second obtaining module configured to, in a case where the measured wind speed is in a first wind speed interval and the pitch angle is in a first angle interval, obtain a vibration acceleration of a target component if the impeller is in a head-to-wind state, wherein the target component is at least one of a blade root of the blade and the nacelle, and the first wind speed interval is a wind speed interval from a maintainable wind speed of the wind turbine generator system to a first wind speed, wherein the first wind speed is a specified wind speed when the wind turbine generator system reaches a predetermined load;

[0024] a control module configured to, in a case where the vibration acceleration exceeds an acceleration threshold, adjust an operating condition of the nacelle or the impeller so that the vibration acceleration is lower than the acceleration threshold.

[0025] In still another aspect, the embodiments of the present application provide a control device of a wind turbine generator system, the device comprising a processor and a memory storing computer program instructions;

[0026] The processor implements the control method of the wind turbine generator set according to the above aspect when executing the computer program instructions.

[0027] In another aspect, the embodiment of the present application provides a computer storage medium, and the computer readable storage medium stores computer program instructions, and the computer program instructions are executed by the processor to implement the control method of the wind turbine generator set according to the above aspect.

[0028] In another aspect, the embodiment of the present application provides a computer program product, and the computer program product stores computer program instructions, and the computer program instructions are executed by the processor to implement the control method of the wind turbine generator set according to the above aspect.

[0029] The control method of the wind turbine generator set and the related device provided by the embodiment of the present application obtain the actual wind speed and the pitch angle of the target blade, and the target blade is a blade in the pitch locking state. When the actual wind speed is between the maintainable wind speed and the first wind speed, and the pitch angle of the target blade is in the first angle interval, if the vibration acceleration of the target component exceeds the acceleration threshold value when the rotor keeps the state of facing the wind, the target component is at least one of the blade root of the blade and the nacelle, the operating condition of the nacelle or the rotor is adjusted, so that the vibration acceleration of the target component is lower than the acceleration threshold value, and the first wind speed is the specified wind speed when the wind turbine generator set is in the predetermined load. When the pitch angle of the target blade is in the first angle interval, and the actual wind speed is between the maintainable wind speed and the first wind speed, if the vibration acceleration of the target component exceeds the acceleration threshold value when the rotor keeps the state of facing the wind, it is determined that the wind turbine generator set is in the cross-stall angle of attack region, the rotor or the nacelle can be controlled, so that the vibration acceleration of the target component is reduced to be lower than the acceleration threshold value, so that the wind turbine generator set can be out of the cross-stall angle of attack region, and the blade cross-section load is reduced, thereby providing a load reduction control scheme in the pitch locking fault condition, and the reliability and the operating stability of the wind turbine generator set are improved. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used in the embodiments of the present application will be briefly introduced. For those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0031] Figure 1 is an optional structure schematic diagram of a wind turbine generator set related to the present application;

[0032] Figure 2 is a curve change schematic diagram of the angle of attack and the resistance coefficient and the lift coefficient of the wind turbine generator set related to the present application;

[0033] Figure 3 is a flow chart of a control method of a wind turbine generator set according to an embodiment of the present application;

[0034] Figure 4 is a flow chart of a control method of a wind turbine generator set according to another embodiment of the present application;

[0035] Figure 5 is a structural diagram of a control device of a wind turbine generator set according to another embodiment of the present application;

[0036] Figure 6 is a structural diagram of a control device of a wind turbine generator set according to another embodiment of the present application. DETAILED DESCRIPTION

[0037] The features and exemplary embodiments of the various aspects of the present application will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely intended to explain the present application, and are not intended to limit the present application. The present application can be implemented without some of the specific details described below. The following description of the embodiments is merely provided to give a better understanding of the present application by showing examples of the present application.

[0038] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one entity or action from another, without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without more limitations, an element preceded by "comprises... a" does not, without more limitations, foreclose the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0039] Please refer to Figure 1 , Figure 1 shows an optional structural diagram of a wind turbine generator set according to the present application. The wind turbine generator set comprises a tower T and a nacelle C and a rotor W located at the top of the tower T, the rotor W is connected to one side of the outer wall of the nacelle C, and the rotor W comprises a hub H and a plurality of blades (not shown).

[0040] Currently, in the whole life cycle of a wind turbine generator set, due to various factors, the blades of the wind turbine generator set may appear the fault condition of being stuck at different angles. For the stuck blade fault, if the wind speed of the wind field where the wind turbine generator set is located is large, the load of each component of the wind turbine generator set will be large. In the related art, there is no solution to this situation, so how to reduce the load when the stuck blade fault occurs is a problem to be solved at present.

[0041] The inventors of the present application have long-term research, by obtaining real-time operation data of the wind turbine generator set, determining the angle of attack, and analyzing the change of the lift coefficient and the drag coefficient corresponding to the angle of attack with the change of the angle of attack, the essential reason for the load increase of the wind turbine generator set after the stuck blade fault occurs is obtained.

[0042] Please refer to Figure 2 , Figure 2 is a wind turbine generator set involved in the present application, and the curve change diagram of the corresponding lift coefficient and drag coefficient with the change of the angle of attack. The angle of attack can refer to the angle between the airflow velocity vector and the chord line of the blade airfoil.

[0043] Among them, in region A, because the stuck angle of the blade of the wind turbine generator set in the stuck state is large, the blade runs in the trans-stall angle of attack region, at this time, there is a situation that the blade balance cannot rotate, thus the cross-sectional load of the blade in the wind turbine generator set is large, and the problem of divergence of the cross-sectional load of the blade occurs.

[0044] Therefore, starting from the essence of the load increase of the blade at the stuck blade fault, the operation condition adjustment of the blade and / or the nacelle is used to reduce the cross-sectional load of the blade, thereby providing a load reduction control scheme under the stuck blade fault condition.

[0045] Next, the control method of the wind turbine generator set of the embodiment of the present application will be introduced.

[0046] Please refer to Figure 3 , in an optional embodiment, the control method of the wind turbine generator set comprises:

[0047] S310, obtaining a wind speed measured value and a pitch angle of a target blade, the target blade being a blade in a stuck state.

[0048] S320, in the case that the wind speed measured value is in a first wind speed interval and the pitch angle is in a first angle interval, if the impeller is in a directly facing wind state, obtaining a vibration acceleration of a target component, wherein the target component is at least one of a blade root of the blade and a nacelle, and the first wind speed interval is a wind speed interval from a maintainable wind speed of the wind turbine generator set to a first wind speed, wherein the first wind speed is a specified wind speed when the wind turbine generator set reaches a predetermined load.

[0049] S330, when the vibration acceleration exceeds the acceleration threshold, adjusting the operating condition of the nacelle or the impeller to make the vibration acceleration lower than the acceleration threshold.

[0050] In the case that the pitch angle of the target blade is in the first angle interval and the measured wind speed is between the maintainable wind speed and the first wind speed, if the vibration acceleration of the target component exceeds the acceleration threshold when the impeller keeps facing the wind, it is determined that the wind turbine is in the cross stall region, and the impeller or the nacelle can be controlled to make the vibration acceleration of the target component lower than the acceleration threshold, so that the wind turbine can be out of the cross stall region, and the blade section load can be reduced, thereby providing a load reduction control scheme in the stall condition, which is beneficial to improve the reliability and operation stability of the wind turbine.

[0051] In some optional examples, in S310, the measured wind speed can be obtained by a radar detector arranged in front of the impeller of the wind turbine. The pitch angle can refer to the angle between the top wing type chord line of the blade and the rotation plane, and the pitch angle can be collected by a pitch controller.

[0052] It should be noted that the target blade is a blade in the stall condition, and the target blade is usually one of the plurality of blades, and in other optional examples, when more than two blades are in the stall condition, the load reduction control can also be realized by referring to the control scheme of the wind turbine.

[0053] In this optional example, by obtaining the measured wind speed and the pitch angle of the target blade, different operating conditions when the wind turbine is in the stall condition can be analyzed and judged.

[0054] In some optional examples, in S320, the first wind speed interval can be represented by a wind speed interval A, A = [V0, V1], where V0 is the maintainable wind speed, which is the upper limit wind speed that can be handled by manual stall condition, and the upper limit wind speed can refer to the maximum wind speed that can be manually maintained and handled by the wind turbine. For example, the maintainable wind speed can be 12 m / s, or it can also be 11 m / s. V1 is the first wind speed, which can be a specified wind speed when the wind turbine reaches a predetermined load. For example, the first wind speed can be a specified wind speed when the wind turbine reaches the maximum load. For example, it can be the survival wind speed when the wind turbine reaches the maximum load. Alternatively, the first wind speed can also be a specified wind speed when the wind turbine reaches a predetermined load before reaching the maximum load.

[0055] It should be noted that the first wind speed can be the maximum wind speed of the environment where the wind turbine generator set is located per year. In the art, the maximum wind speed of the environment where the wind turbine generator set is located per year can also be determined by the maximum wind speed V50 of the environment per fifty years, which can be V1=0.8*V50.

[0056] The first angle interval described above can represent that the pitch angle of the blade in the stall state is large, for example, the first angle interval can be represented by an angle interval B1, B1=[b1, b2], wherein the angle size of b1 and b2 can be set according to actual needs, for example, b1 is 55°, and b2 is 90°.

[0057] The target component described above can be at least one of the blade root of the blade and the nacelle. Illustratively, when the target component is the blade root of the blade, the vibration acceleration of the target component can be measured by the vibration acceleration sensor arranged on the blade root. When the target component includes the nacelle, the vibration acceleration of the target component can also be obtained by the vibration acceleration sensor arranged on the nacelle.

[0058] The acceleration threshold described above can be set according to different target components, and the acceleration threshold can be the critical value of the vibration acceleration when the blade runs across the stall region.

[0059] It should be noted that when the wind speed is in the first wind speed interval, the wind turbine generator set is difficult to rely on manual solution to the stall failure, at this time, the wind turbine generator set needs to keep stable operation, and reduce the load through self-regulation. In this case, if the pitch angle is in the first angle interval, the stall angle is large, which causes the blade to run in the cross-stall angle region, and further causes the large cross-sectional load of the blade or the divergence of the cross-sectional load of the blade.

[0060] At this time, if the impeller is in the head-on wind state, it can be confirmed whether the blade runs in the cross-stall angle region through the vibration acceleration of the target component. When the vibration acceleration of the target component is greater than the acceleration threshold, it is confirmed that the blade is in the cross-stall region, and the vibration acceleration of the target component can be reduced to below the acceleration threshold by adjusting the operating condition of the nacelle or the impeller while keeping the impeller in the head-on wind state, so that the blade is out of the cross-stall region, thereby reducing the cross-sectional load of the blade. Finally, a load reduction control scheme under the stall failure condition is provided, which is beneficial to improve the reliability and operation stability of the wind turbine generator set.

[0061] In some optional examples, the process of adjusting the operating condition of the nacelle or the impeller to reduce the vibration acceleration of the target component can include: controlling the pitch angle of at least one non-target blade to be adjusted to the open state, and adjusting the rotational speed of the impeller to the rotational speed interval range corresponding to the open state, so that the vibration acceleration is lower than the acceleration threshold.

[0062] It should be noted that when the measured wind speed is within the first wind speed range and the blade pitch angle of the stuck blade is within the first angle range, if the rotor is facing the wind directly and the vibration acceleration of the target component exceeds the acceleration threshold, controlling the nacelle to yaw against the wind will result in stall-induced blade cross-sectional load divergence. Therefore, instead of triggering the nacelle to yaw against the wind, by controlling the pitch angle of the non-target blade to be in the open-blade state, and simultaneously adjusting the rotor speed to the speed range corresponding to the open-blade state, micro-control of the rotor speed can be achieved. This allows the blade to move out of the cross-stall region, avoiding blade cross-sectional load divergence and achieving the effect of reducing the blade cross-sectional load of the wind turbine generator.

[0063] The aforementioned speed range can be determined based on the different opening angles of the non-target blades in the open state. An upper limit value for the speed range can be set so that the vibration acceleration of the target component can be gradually adjusted to be below the acceleration threshold as the impeller rotates.

[0064] In some alternative examples, the process of reducing the vibration acceleration of a target component by adjusting the operating conditions of the nacelle can be: fine-tuning the yaw angle of the nacelle so that the vibration acceleration is below an acceleration threshold.

[0065] It should be noted that fine-tuning the nacelle's yaw angle can be done by setting a fixed yaw error angle range for different aircraft models. When blade stall is detected, the nacelle yaw can be controlled, and the nacelle's yaw angle can be adjusted to keep the yaw accuracy within the yaw error angle range, thereby achieving fine-tuning of the nacelle's yaw angle.

[0066] In this optional example, by fine-tuning the nacelle yaw angle, the angle of attack of the blades can be changed, which helps to reduce the vibration acceleration of the target component, allowing the blades to escape the stall angle of attack region within a certain period of time and reducing the cross-sectional load on the blades.

[0067] Please refer to Figure 4 Based on the above embodiments, in another embodiment of the control method for wind turbine generator sets proposed in this application, after obtaining the measured wind speed value and the pitch angle of the target blade, the method may further include:

[0068] S410 controls the impeller to maintain a side-wind state when the pitch angle is in a second angle range smaller than the first angle range and the measured wind speed is in the first wind speed sub-range.

[0069] The first wind speed range may include a first wind speed sub-range and a second wind speed sub-range, wherein the second wind speed sub-range is a wind speed sub-range with a lower wind speed than the first wind speed sub-range.

[0070] Exemplarily, the first wind speed sub-interval can be A1, the second wind speed sub-interval can be A2, and the first wind speed interval A can be a set of the first wind speed sub-interval A1 and the second wind speed sub-interval A2. For example, the first wind speed sub-interval A1 can be [V2, V1], and the second wind speed sub-interval can be [V0, V2). Wherein V0 is a maintainable wind speed, V1 is a first wind speed, i.e., a specified wind speed when the wind turbine reaches a predetermined load, and V2 can be a second wind speed obtained according to probability statistics, considering the wind difference of the environment where the wind turbine is located and the probability of failure, for example, the second wind speed can be 30 m / s.

[0071] And the angle of the second angle interval is smaller than that of the first angle interval. Still taking the first angle interval B1 as an example, the second angle interval can be represented by B2, B2 = [b3, b1), b3 < b1 < b2. For example, b3 can be 0° or other values.

[0072] For the actual measurement values of the target blade pitch angle and the wind speed involved in the embodiment, the inventors of the present application have also found the essential reason for the large load of the wind turbine. Please refer to the region B in Figure 2 , Figure 2 The resistance coefficient of the region B is high, and the pitch angle of the target blade when the blade is stuck will be in the second angle interval, which will cause the aerodynamic imbalance of the impeller to increase. In the case that the actual measurement value of the wind speed is in the first wind speed sub-interval, the blade is in a large angle of attack region, at this time the pitch moment and the head deflection moment of the impeller will increase, and the mechanical component load is large.

[0073] Based on the analysis of the reason for the large mechanical component load, it can be found that when the target blade pitch angle is in the second angle interval which is smaller than the first angle interval and the actual measurement value of the wind speed is in the first wind speed sub-interval, if the impeller is in the head-on wind state, the mechanical component load is large at this time, which can be relatively reduced by adjusting the impeller to the side-on wind state, thereby providing a load reduction control scheme in the stuck blade fault working condition, which is beneficial to improve the reliability and operation stability of the wind turbine.

[0074] In some optional examples, the process of controlling the impeller to maintain the side-on wind state can include: controlling the nacelle to yaw in the unmooring direction to make the impeller in the side-on wind state.

[0075] In this example, each nacelle direction sector can be correspondingly provided with an unmooring parameter, which can include an unmooring direction. The nacelle can be controlled to yaw according to the unmooring direction, so that the impeller corresponds to left yaw or right yaw according to the nacelle yawing direction, thereby maintaining the impeller in the side-on wind state, thereby restricting the mechanical component load and improving the operation stability and reliability of the wind turbine in the stuck blade fault state.

[0076] In other optional examples, please continue to refer to Figure 4 After the wind speed measured value and the pitch angle of the target blade are acquired, the method can further include:

[0077] S420, when the pitch angle is in the second angle interval and the wind speed measured value is in the second wind speed sub-interval, controlling the impeller to keep the head-on wind state.

[0078] It should be noted that when the pitch angle of the target blade is in the second angle interval and the wind speed measured value is in the second wind speed sub-interval, the pitch angle of the blade is small, and the wind speed is relatively small at the same time. At this time, the blade is not in the large angle of attack area, and the impeller can be kept in the head-on wind state.

[0079] In the case of the pitch fault of the wind turbine generator set, the embodiment explores the reasons for the large load under different wind speeds and different pitch angles, and designs the corresponding control scheme, thereby comprehensively reducing the load during pitch stoppage and improving the stability and reliability of the wind turbine generator set.

[0080] Based on the above embodiment, another embodiment of the control method of the wind turbine generator set is proposed. In this embodiment, when the wind speed measured value is lower than the maintainable wind speed, a pitch fault maintenance prompt information is sent to the maintenance personnel.

[0081] The wind speed measured value can be obtained after the load reduction strategy control of the wind turbine generator set is implemented. For example, after the vibration acceleration of the target component is adjusted to be lower than the acceleration threshold through nacelle yaw control, it is found that the wind speed measured value of the wind turbine generator set is reduced to below the maintainable wind speed. The maintenance personnel can be prompted by the pitch fault maintenance prompt information to timely maintain the target blade.

[0082] In other examples, when the wind speed measured value obtained during the load reduction strategy execution is lower than the maintainable wind speed, the pitch stoppage fault maintenance operation can be directly performed at this time.

[0083] It should be noted that the pitch fault maintenance prompt information is not limited to a specific implementation form, and can be set according to related technologies in the art.

[0084] The embodiment considers the case that the wind speed is lower than the maintainable wind speed, can quickly remove the blade pitch fault, and combines the foregoing scheme to comprehensively maintain the wind turbine generator set according to different wind speed measured values and different pitch angles, thereby improving the operation stability and reliability.

[0085] Figure 5 An optional structural schematic diagram of the control device of the wind turbine generator set is shown in the embodiment of the application, in Figure 5 The device can include:

[0086] The first obtaining module 510 is configured to obtain a wind speed measured value and a pitch angle of a target blade, the target blade being a blade in a pitch locked state.

[0087] The second obtaining module 520 is configured to, when the wind speed measured value is in a first wind speed interval and the pitch angle is in a first angle interval, obtain a vibration acceleration of a target component if the hub is in a directly facing wind state, wherein the target component is at least one of a blade root of the blade and a nacelle, and the first wind speed interval is a wind speed interval from a maintainable wind speed of the wind turbine generator to a first wind speed, wherein the first wind speed is a specified wind speed when the wind turbine generator reaches a predetermined load.

[0088] The control module 530 is configured to, when the vibration acceleration exceeds an acceleration threshold value, adjust an operating condition of the nacelle or the hub so that the vibration acceleration is lower than the acceleration threshold value.

[0089] In an optional example, the control module 530 can be configured to control the pitch angle of at least one non-target blade to be adjusted to an open pitch state, and control a hub rotating speed to be adjusted to a rotating speed interval range corresponding to the open pitch state, so that the vibration acceleration is lower than the acceleration threshold value.

[0090] In another optional example, the control module 530 can be further configured to finely adjust a yaw angle of the nacelle so that the vibration acceleration is lower than the acceleration threshold value.

[0091] In yet another optional example, the control module 530 can be further configured to, when the pitch angle is in a second angle interval smaller than the first angle interval and the wind speed measured value is in a first wind speed sub-interval, control the hub to keep a side facing wind state, wherein the first wind speed interval includes the first wind speed sub-interval and a second wind speed sub-interval lower than the first wind speed sub-interval.

[0092] In still another optional example, the control module 530 can be further configured to, when the pitch angle is in the second angle interval and the wind speed measured value is in the second wind speed sub-interval, control the hub to keep the directly facing wind state.

[0093] In still another optional example, the control module 530 can be further configured to control the nacelle to yaw in a cable releasing direction so that the hub is in the side facing wind state.

[0094] In still another optional example, the apparatus can further include:

[0095] The sending module is configured to, when the wind speed measured value is lower than the maintainable wind speed, send a pitch locked fault maintenance prompt information to a maintenance personnel.

[0096] Figure 6 A hardware structure schematic diagram of a control device of a wind turbine generator provided by an embodiment of the present application is shown.

[0097] The control device of the wind turbine generator system can include a processor 601 and a memory 602 storing computer program instructions.

[0098] In particular, the processor 601 can include a central processing unit (CPU), or an application specific integrated circuit (ASIC), or one or more integrated circuits configured to perform one or more of the embodiments of the present application.

[0099] The memory 602 can include mass storage for data or instructions. By way of example, and not limitation, the memory 602 can include a hard disk drive (HDD), a floppy disk drive, flash memory, an optical disc, a magneto-optical disc, magnetic tape, or a Universal Serial Bus (USB) drive or a combination of two or more of these. The memory 602 can include removable or non-removable (or fixed) media, where appropriate. The memory 602 can be considered a computer-readable medium, where appropriate. The memory 602 can be internal or external to the integrated gateway disaster recovery device, where appropriate. In particular embodiments, the memory 602 is non-volatile, solid-state memory.

[0100] In particular embodiments, the memory can include read-only memory (ROM), random access memory (RAM), magnetic disk storage mediums, optical storage mediums, flash memory devices, electrical, optical, or other physical / tangible memory storage devices. Thus, in general, the memory includes one or more tangible (non-transitory) computer-readable storage media (e.g., a memory device) encoded with software that, when executed (by one or more processors), is operable to perform operations described with reference to the methods according to the above-described aspects of the present disclosure.

[0101] The processor 601 implements the wind turbine generator system control method of any of the above-described embodiments by reading and executing computer program instructions stored in the memory 602.

[0102] In one example, the control device of the wind turbine generator system can further include a communication interface 603 and a bus 610. As shown, the processor 601, the memory 602, and the communication interface 603 are connected through the bus 610 and complete communication with each other. Figure 6

[0103] The communication interface 603 is mainly used to realize the communication between the modules, devices, units and / or equipment in the embodiments of the present application.

[0104] ​Bus 610 includes hardware, software, or both, coupling components of the remaining useful life calculation device of the wind turbine generator system to each other and to various external devices. While the application is not limited to particular bus architectures, such as Industry Standard Architecture (ISA) or Peripheral Component Interconnect (PCI), bus architectures having other fabrics are also possible. For example, the bus can be composed of a combination of buses, including an input / output bus (I / O bus); a data bus; a memory bus; a video bus; and a storage interface bus such as a universal serial bus (USB) bus. The bus can include any interconnection fabric that is used to interconnect integrated circuit (IC) cores and / or other components, such as those shown in FIG. 6. In some embodiments, the bus can be a multi-drop bus, a point-to-point connection, or a hybrid of a multi-drop bus and point-to-point connection.

[0105] The control device of the wind turbine generator system can perform the control method of the wind turbine generator system in the embodiments of the application, thereby achieving the control method of the wind turbine generator system described in combination Figures 1 to 5 The control method and device of the wind turbine generator system described above.

[0106] In addition, in combination with the control method of the wind turbine generator system in the above embodiments, the embodiments of the application can provide a computer storage medium to implement. The computer storage medium has computer program instructions stored thereon; the computer program instructions are executed by a processor to implement any one of the control methods of the wind turbine generator system in the above embodiments.

[0107] In addition, the embodiments of the application also provide a computer program product, comprising a computer program, the computer program is executed by a processor to implement the steps and corresponding contents of the above method embodiments.

[0108] It needs to be clear that the application is not limited to the specific configurations and processes described above and shown in the drawings. For the sake of brevity, detailed descriptions of well-known methods are omitted here. In the above embodiments, several specific steps are described and shown as examples. However, the method process of the 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 steps, after understanding the spirit of the application.

[0109] The functions noted in the description of the structural block diagrams above can be implemented as hardware, software, firmware, or a combination thereof. When implemented in hardware, they can be, for example, electronic circuits, application specific integrated circuits (ASICs), appropriate firmware, plug-ins, functional cards, and the like. When implemented in software, the elements of the present application are program or code segments that are used to perform the required tasks. The program or code segments can be stored in a machine-readable medium or transmitted through a data signal carried in a carrier wave over a transmission medium or communication link. A "machine-readable medium" includes any medium that can store or transport 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, fiber optic media, radio frequency (RF) links, and the like. The code segments can be downloaded via computer networks such as the Internet, intranets, and the like.

[0110] It is also important to note that the examples mentioned in the present application describe some methods or systems based on a series of steps or devices. However, the present application is not limited to the order of the steps mentioned above, that is, the steps can be performed in the order mentioned in the examples, or in an order different from the examples, or several steps can be performed simultaneously.

[0111] The computer program instructions can also be loaded onto a computer, other programmable data processing apparatus, or other processing device to cause a series of operational steps to be performed on the computer, other programmable apparatus or other processing device to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide processes for implementing the functions / acts specified in the flowchart and / or block diagram block or blocks. These computer program instructions can also be stored in a computer readable medium that can direct a computer, other programmable data processing apparatus, or other processing device to operate in a particular manner, such that the instructions stored in the computer readable medium produce an article of manufacture including instructions which implement the function / act specified in the flowchart and / or block diagram block or blocks. The computer program instructions can also be loaded onto a computer, other programmable data processing apparatus, or other processing device to cause a series of operational steps to be performed on the computer, other programmable apparatus or other processing device to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide processes for implementing the functions / acts specified in the flowchart and / or block diagram block or blocks. These computer program instructions can also be stored in a computer readable medium that can direct a computer, other programmable data processing apparatus, or other processing device to operate in a particular manner, such that the instructions stored in the computer readable medium produce an article of manufacture including instructions which implement the function / act specified in the flowchart and / or block diagram block or blocks.

[0112] The above merely describes a specific implementation of the present application. Those skilled in the art can clearly understand the specific working processes of the system, modules and units described above for the convenience and brevity of description, and can refer to the corresponding processes in the foregoing method embodiments, which will not be described herein again. It should be understood that the protection scope of the present application is not limited to this, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical range disclosed by the present application, and these modifications or replacements should be covered within the protection scope of the present application.

Claims

1. A control method of a wind turbine generator system, the wind turbine generator system including a nacelle and a rotor, the rotor being connected to one side of an outer wall of the nacelle, the rotor including a plurality of blades, characterized in that, The method comprises: obtaining a measured value of wind speed and a pitch angle of a target blade, the target blade being the blade in a pitch blocking state; if the impeller is in a head-on wind state, obtaining a vibration acceleration of a target component when the measured value of wind speed is in a first wind speed interval and the pitch angle is in a first angle interval, wherein the target component is at least one of a blade root of the blade and the nacelle, and the first wind speed interval is a wind speed interval from a maintainable wind speed of the wind turbine generator to a first wind speed, wherein the first wind speed is a specified wind speed when the wind turbine generator reaches a predetermined load; adjusting an operating condition of the nacelle or the impeller to make the vibration acceleration lower than the acceleration threshold value when the vibration acceleration exceeds the acceleration threshold value; the adjusting of the operating condition of the nacelle or the impeller to make the vibration acceleration lower than the acceleration threshold value comprises: controlling a pitch angle adjustment of at least one non-target blade to an open pitch state, and adjusting an impeller rotating speed to a rotating speed interval range corresponding to the open pitch state, to make the vibration acceleration lower than the acceleration threshold value.

2. The method of claim 1, wherein, the adjusting of the operating condition of the nacelle or the impeller to make the vibration acceleration lower than the acceleration threshold value comprises: fine-tuning a yaw angle of the nacelle to make the vibration acceleration lower than the acceleration threshold value.

3. The method of claim 1, wherein, after the obtaining of the measured value of wind speed and the pitch angle of the target blade, the method further comprises: controlling the impeller to keep a side-on wind state when the pitch angle is in a second angle interval smaller than the first angle interval and the measured value of wind speed is in a first wind speed sub-interval, wherein the first wind speed interval comprises the first wind speed sub-interval and a second wind speed sub-interval lower than the first wind speed sub-interval.

4. The method of claim 3, wherein, after the obtaining of the measured value of wind speed and the pitch angle of the target blade, the method further comprises: controlling the impeller to keep a head-on wind state when the pitch angle is in the second angle interval and the measured value of wind speed is in the second wind speed sub-interval.

5. The method of claim 3, wherein, the controlling of the impeller to keep the side-on wind state comprises: controlling the nacelle to yaw in a cable release direction to make the impeller in the side-on wind state.

6. The method of claim 1, wherein, after the obtaining of the measured value of wind speed and the pitch angle of the target blade, the method further comprises: sending a pitch blocking fault maintenance prompt information to a maintenance personnel when the measured value of wind speed is lower than the maintainable wind speed.

7. A control device of a wind power generator unit, the wind power generator unit comprising a nacelle and a rotor, the rotor being connected to one side of an outer wall of the nacelle, the rotor comprising a plurality of blades, characterized in that, The device comprises: a first obtaining module configured to obtain a measured value of wind speed and a pitch angle of a target blade, the target blade being the blade in a pitch blocking state; a second obtaining module configured to obtain a vibration acceleration of a target component when the measured value of wind speed is in a first wind speed interval and the pitch angle is in a first angle interval if the impeller is in a head-on wind state, wherein the target component is at least one of a blade root of the blade and the nacelle, and the first wind speed interval is a wind speed interval from a maintainable wind speed of the wind turbine generator to a first wind speed, wherein the first wind speed is a specified wind speed when the wind turbine generator reaches a predetermined load; The control module is configured to adjust an operating condition of the machine cabin or the impeller when the vibration acceleration exceeds an acceleration threshold, so as to make the vibration acceleration lower than the acceleration threshold. The control module is specifically configured to: adjust a pitch angle of at least one non-target blade to an open pitch state, and adjust the rotational speed of the impeller to a rotational speed interval range corresponding to the open pitch state, so as to make the vibration acceleration lower than the acceleration threshold.

8. A control device for a wind power plant, characterized in that The device comprises a processor and a memory storing computer program instructions; The processor executes the computer program instructions to implement the control method of the wind turbine generator set according to any one of claims 1 to 6.

9. A computer-readable storage medium, characterized in that, The computer readable storage medium stores computer program instructions, and the computer program instructions are executed by the processor to implement the control method of the wind turbine generator set according to any one of claims 1 to 6.

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