Wind turbine, wind detection method and related device

Abstract

The present application relates to the field of wind turbine control, and particularly relates to a wind turbine, a wind direction detection method and related equipment. The method comprises: determining a wind speed offset measured by a wind measuring device and a rotational linear speed of the wind measuring device; and analyzing whether a blade rotation plane of the wind turbine is perpendicular to a wind direction based on the wind speed offset and the rotational linear speed. The present application improves the structure of the wind turbine, installs the wind measuring device on the outer edge of the hub, accurately measures the wind direction which is not disturbed by the blade, instead of measuring the wake wind direction after being disturbed by the blade, thereby diagnosing whether the wind turbine is perpendicular to the wind direction, and solving the technical problems of inaccurate wind direction measurement by the wind vane behind the blade and low specificity of diagnosing abnormal wind direction by using the power curve and inability to distinguish the orientation of the wind turbine.

Description

Technical Field

[0001] This invention relates to the field of wind turbine control, and more particularly to a wind turbine generator set, a wind detection method, and related equipment. Background Technology

[0002] In the current field of wind turbine control, wind turbines need to keep their blades and nacelles facing the wind direction at all times during operation. The existing method of wind alignment is to adjust the yaw motor according to the direction of the wind vane installed above the nacelle. Since the wind vane is installed behind the blades, it actually measures the direction of the wake. Because the wake has rotational and diffusing properties, the wind direction measured by the wind vane will deviate from the wind direction in front of the wind turbine, resulting in inaccurate wind alignment of the wind turbine. Summary of the Invention

[0003] The main objective of this invention is to solve the technical problem of inaccurate wind detection in the prior art.

[0004] The first aspect of the present invention provides a wind turbine generator set, the wind turbine generator set comprising: a hub, at least two blades, a nacelle, and a wind measuring device; the hub is rotatably connected to the nacelle, the at least two blades are fixedly connected to the hub and drive the hub to rotate; the wind measuring device is fixed to the outer surface of the hub and parallel to the at least two blades, and is used to measure the wind speed deviation of the wind turbine generator set at the current moment, wherein the wind speed deviation is the velocity component of the relative velocity of the wind speed with respect to the rotational linear velocity in the direction of the rotational linear velocity, so as to realize the detection of whether the wind turbine generator set is abnormal.

[0005] Optionally, in a first implementation of the first aspect of the present invention, the wind turbine generator set further includes at least one laser emitter disposed on the outer surface of the nacelle, for triggering the wind measuring device to measure the wind speed offset when the wind measuring device is rotated to be aligned with the laser emitter.

[0006] Optionally, in a second implementation of the first aspect of the present invention, the wind measuring device is installed at the middle position of each pair of the at least two blades and in front of the at least two blades.

[0007] Optionally, in a third implementation of the first aspect of the invention, the wind measuring device includes a pair of probes, the line connecting the pair of probes being parallel to the plane of rotation of the at least two blades.

[0008] A second aspect of the present invention provides a wind detection method applied to a wind turbine generator set. The wind detection method includes: determining a wind speed offset measured by an anemometer and a rotational linear velocity of the anemometer, wherein the wind speed offset is the velocity component of the relative velocity of the wind speed with respect to the rotational linear velocity in the direction of the rotational linear velocity; and analyzing whether the blade rotation plane of the wind turbine generator set is perpendicular to the wind direction based on the wind speed offset and the rotational linear velocity.

[0009] Optionally, in a first implementation of the second aspect of the present invention, determining the wind speed offset measured by the wind measuring device and the rotational linear velocity of the wind measuring device includes: acquiring a laser signal received by the wind measuring device from the laser emitter; recording the time point at which the wind measuring device aligns with the laser emitter and the wind speed offset measured by the wind measuring device based on the laser signal; and calculating the rotational linear velocity of the wind measuring device based on the time point, the angular velocity of the hub, and the distance between the wind measuring device and the center of the hub.

[0010] Optionally, in a second implementation of the second aspect of the present invention, at least two laser emitters are provided on the outer surface of the cabin; determining the wind speed offset measured by the wind measuring device and the rotational linear velocity of the wind measuring device includes: obtaining the time point when the wind measuring device aligns with the two target lasers, and the wind speed offset measured by the wind measuring device at the two time points, wherein the two target lasers are any two of the at least two laser emitters; calculating the rotational linear velocity of the wind measuring device based on the position of the two target lasers and the time point when they are aligned; and selecting one of the two wind speed offsets that satisfies a preset condition as the wind speed offset of the wind measuring device.

[0011] Optionally, in a third implementation of the second aspect of the present invention, determining whether the blade rotation plane of the wind turbine is perpendicular to the wind direction based on the wind speed offset and the rotational linear velocity includes: calculating the difference between the wind speed offset and the rotational linear velocity; determining the numerical relationship between the difference and a preset tolerance range; and determining whether the blade rotation plane of the wind turbine is perpendicular to the wind direction based on the numerical relationship.

[0012] Optionally, in a fourth implementation of the second aspect of the present invention, after determining whether the blade rotation plane of the wind turbine is perpendicular to the wind direction based on the wind speed offset and the rotational linear velocity, the method further includes: if the difference is within a preset tolerance range, determining that the blade rotation plane of the wind turbine is perpendicular to the wind direction, and maintaining the wind turbine in its current position; if the difference is not within the preset tolerance range, determining the adjustment direction of the wind turbine based on the numerical relationship and the difference, and adjusting the windward direction of the wind turbine.

[0013] A third aspect of the present invention provides a wind detection device, comprising: a speed acquisition module for determining the wind speed offset measured by the wind measuring device and the rotational linear velocity of the wind measuring device, wherein the wind speed offset is the velocity component of the relative velocity of the wind speed with respect to the rotational linear velocity in the direction of the rotational linear velocity; and an orientation determination module for analyzing whether the blade rotation plane of the wind turbine generator is perpendicular to the wind direction based on the wind speed offset and the rotational linear velocity.

[0014] Optionally, in a first implementation of the third aspect of the present invention, the speed acquisition module is specifically used to: acquire the laser signal emitted by the laser emitter received by the wind measuring device; record the time point at which the wind measuring device aligns with the laser emitter, and the wind speed offset measured by the wind measuring device, based on the laser signal; and calculate the rotational linear velocity of the wind measuring device based on the time point, the angular velocity of the hub, and the distance between the wind measuring device and the center of the hub.

[0015] Optionally, in a second implementation of the third aspect of the present invention, the speed acquisition module is specifically used to: acquire the time point when the wind measuring device aligns with the two target lasers, and the wind speed offset measured by the wind measuring device at the two time points, wherein the two target lasers are any two of the at least two laser emitters; calculate the rotational linear velocity of the wind measuring device based on the positions of the two target lasers and the time point when they are aligned; and select one of the two wind speed offsets that satisfies a preset condition as the wind speed offset of the wind measuring device.

[0016] Optionally, in a third implementation of the third aspect of the present invention, the orientation determination module is specifically used to: calculate the difference between the wind speed offset and the rotational linear velocity; determine the numerical relationship between the difference and a preset tolerance range; and determine whether the blade rotation plane of the wind turbine is perpendicular to the wind direction based on the numerical relationship.

[0017] Optionally, in a fourth implementation of the third aspect of the present invention, the wind detection device further includes an adjustment module, which is specifically used to: if the difference is within a preset tolerance range, determine that the blade rotation plane of the wind turbine is perpendicular to the wind direction and keep the wind turbine in its current position; if the difference is not within the preset tolerance range, determine the adjustment direction of the wind turbine based on the numerical relationship and the difference, and adjust the windward direction of the wind turbine.

[0018] A fourth aspect of the present invention provides an electronic device comprising a memory and at least one processor, the memory storing instructions; the at least one processor invokes the instructions in the memory to cause the electronic device to perform the various steps of the wind detection method described above.

[0019] A fifth aspect of the present invention provides a computer-readable storage medium storing instructions, characterized in that the instructions, when executed by a processor, implement the various steps of the wind detection method described above.

[0020] In the technical solution of this invention, the wind speed offset measured by the wind measuring device and the rotational linear velocity of the wind measuring device are determined, wherein the wind speed offset is the velocity component of the relative velocity of the wind speed with respect to the rotational linear velocity in the direction of the rotational linear velocity; based on the wind speed offset and the rotational linear velocity, it is analyzed whether the rotation plane of the wind turbine blades is perpendicular to the wind direction. This application improves the structure of the wind turbine by installing the wind measuring device on the outer edge of the hub, accurately measuring the wind direction undisturbed by the blades, rather than measuring the wake wind direction disturbed by the blades, thereby diagnosing whether the wind turbine is perpendicular to the wind direction. This solves the technical problems of inaccurate wind direction assessment based on the wind vane behind the blades and the low specificity and inability to distinguish the orientation of the wind turbine when using the power curve to diagnose wind anomalies. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the first structure of the wind turbine generator set in an embodiment of the present invention; Figure 2 This is a schematic diagram of the first embodiment of the wind detection method in this invention; Figure 3 This is a schematic diagram of a second embodiment of the wind detection method in this invention; Figure 4 This is a schematic diagram of the first embodiment of the wind detection device in this invention; Figure 5 This is a schematic diagram of the second embodiment of the wind detection device in this invention; Figure 6This is a schematic diagram of one embodiment of the electronic device in this invention. Detailed Implementation

[0022] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification, claims, and accompanying drawings of this invention are used to distinguish similar elements and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms “comprising” or “having,” and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0023] For ease of understanding, the structure and implementation process of the wind turbine generator set, wind detection method, and wind detection method provided by the present invention will be described in detail below through various embodiments. Please refer to [link / reference]. Figure 1 A schematic diagram of the structure of a wind turbine generator set in an embodiment of the present invention. The wind turbine generator set includes: a hub, at least two blades, a nacelle, and a wind measuring device. The hub 101 is rotatably connected to the nacelle 102, and the at least two blades 103 are fixedly connected to the hub 101 and drive the hub 101 to rotate. Furthermore, this embodiment does not limit the number of blades, and the blades drive the hub to rotate.

[0024] Specifically, the blades rotate based on the flow of natural wind. Since the blades are fixedly connected to the hub and the hub is fixedly connected to the anemometer, the hub and the anemometer rotate at the same speed as the blades rotate. The same speed means that the blades, hub and anemometer rotate at the same angular velocity.

[0025] The wind measuring device 104 is fixed to the outer surface of the hub 101 and parallel to the at least two blades 103. It is used to measure the wind speed deviation of the wind turbine at the current moment. The wind speed deviation is the relative velocity of the wind speed with respect to the rotational linear velocity in the direction of the rotational linear velocity, so as to detect whether the wind turbine is abnormal. Specifically, the wind measuring device is fixed to the outer surface edge of the hub, and the projection of its fixed position does not overlap with the projection of the blade. The fixed position of the wind measuring device should be comparable to that of the laser emitter. The comparable means that when the blade drives the wind measuring device to rotate, there is an angle that allows the wind measuring device to receive the laser signal emitted by the laser emitter.

[0026] The wind turbine generator set also includes at least one laser emitter 105 disposed on the outer surface of the nacelle, for triggering the wind measuring device 104 to measure the wind speed offset when the wind measuring device 104 is rotated to be aligned with the laser emitter 105. In this embodiment, at least one laser emitter is provided in the wind turbine generator set. The fixed position of the laser emitter on the nacelle should be comparable to and parallel to the wind measuring device. The comparable means that when the blade drives the wind measuring device to rotate, there is an angle that allows the wind measuring device to receive the laser signal emitted by the laser emitter.

[0027] The wind measuring device 104 is installed in the middle of each pair of blades in the at least two blades 103, and is installed in front of the at least two blades 103. In this embodiment, the wind turbine generator set is arranged in the following order on the spatial projection: wind measuring device - hub - blade - (nacelle and at least one laser emitter). The laser emitter is fixed at any position on the outer surface of the nacelle, but the laser signal emitted from the fixed position should be able to be received by the wind measuring device.

[0028] Specifically, the wind measuring device 104 is installed in front of the at least two blades 103, where "in front" refers to the windward direction of the wind turbine generator set.

[0029] Furthermore, if the number of laser emitters is greater than one, the installation position between the laser emitters should be 360 ​​degrees divided by the number of laser emitters, that is, the angle between the laser emitter and the center point of the wheel hub should be consistent.

[0030] The wind measuring device 104 includes a pair of probes, and the line connecting the pair of probes is parallel to the plane of rotation of the at least two blades.

[0031] In this embodiment, an anemometer is constructed based on the principle that the speed of ultrasonic waves in air changes with wind speed. Two pairs of sound pulse transmitters and receivers are typically placed at two points separated by a distance L, serving as the probes of the anemometer. The time it takes for the sound wave to travel downwind from the transmitter to the receiver is measured. Compared to headwind propagation time Short, if the speed of sound is C, and the wind speed offset in the direction of the sound pulse transmitter and receiver is V, then there exists a formula for calculating the wind speed offset:

[0032] In this embodiment, the wind turbine generator set includes: a hub, at least two blades, a nacelle, and a wind measuring device. The hub is rotatably connected to the nacelle, and the at least two blades are fixedly connected to the hub and drive the hub to rotate. The wind measuring device is fixed to the outer surface of the hub and parallel to the at least two blades, and is used to measure the wind speed deviation of the wind turbine generator set at the current moment. The wind speed deviation is the velocity component of the relative velocity of the wind speed with respect to the rotational linear velocity in the direction of the rotational linear velocity, so as to detect whether the wind turbine generator set is perpendicular to the wind direction. This application improves the structure of the wind turbine generator set by installing the wind measuring device on the outer edge of the hub, accurately measuring the wind direction undisturbed by the blades, rather than measuring the wake wind direction after being disturbed by the blades. This diagnoses whether the wind turbine generator set is perpendicular to the wind direction, solving the technical problems of inaccurate wind alignment based on the wind vane behind the blades and the low specificity and inability to distinguish the wind turbine orientation when using the power curve to diagnose wind anomalies.

[0033] Based on the aforementioned wind turbine generator set, this invention also proposes a wind detection method, please refer to [link to relevant documentation]. Figure 2 The first embodiment of the wind detection method in this invention includes: 201. Determine the wind speed offset measured by the anemometer and the rotational linear velocity of the anemometer; In this embodiment, the wind speed offset is measured and the rotational linear velocity of the wind measuring device is obtained by the wind measuring device. The rotational linear velocity of the wind measuring device can be obtained by measuring the wind measuring device itself, or by detecting the blade rotational angular velocity at the alignment time point of the wind turbine generator and calculating the rotational linear velocity of the wind measuring device using the known distance from the wind measuring device to the hub center point.

[0034] On one hand, if at least two laser emitters are provided on the outer surface of the cabin, the time point when the wind measuring device aligns with the two target lasers is obtained, as well as the wind speed offset measured by the wind measuring device at the two time points, wherein the two target lasers are any two of the at least two laser emitters; the rotational linear velocity of the wind measuring device is calculated based on the position of the two target lasers and the time point when they are aligned; and one of the two wind speed offsets that satisfies a preset condition is selected as the wind speed offset of the wind measuring device.

[0035] 202. Analyze whether the blade rotation plane of a wind turbine is perpendicular to the wind direction based on wind speed offset and rotational linear velocity.

[0036] In this embodiment, the difference between wind speed offset and rotational linear velocity is calculated to further analyze whether the blade rotation plane of the wind turbine is perpendicular to the wind direction.

[0037] Specifically, when the wind measuring device receives the laser signal, it reads the wind speed offset v at this time. v is actually the relative velocity of the wind speed with respect to the rotational linear velocity of the wind measuring device, and its projection in the direction of the rotational linear velocity of the wind measuring device. If the absolute value of v-wr is less than the fault tolerance interval a, it is judged that the wind is normal. If the absolute value of v-wr is greater than the fault tolerance interval a, it is further judged, based on the installation position of the laser emitter, the deflection direction of the blade rotation plane of the wind turbine generator relative to the wind direction.

[0038] In this embodiment, the wind speed offset measured by the wind measuring device and the rotational linear velocity of the wind measuring device are determined. The wind speed offset is the velocity component of the relative velocity of the wind speed with respect to the rotational linear velocity in the direction of the rotational linear velocity. Based on the wind speed offset and the rotational linear velocity, it is analyzed whether the blade rotation plane of the wind turbine is perpendicular to the wind direction. This application improves the structure of the wind turbine by installing the wind measuring device on the outer edge of the hub, accurately measuring the wind direction undisturbed by the blades, rather than measuring the wake wind direction disturbed by the blades. This diagnoses whether the wind turbine is perpendicular to the wind direction, solving the technical problems of inaccurate wind direction assessment based on the wind vane behind the blades and the low specificity and inability to distinguish the wind turbine orientation when using power curves to diagnose wind anomalies.

[0039] Please see Figure 3 The second embodiment of the wind detection method in this invention includes... 301. Obtain the laser signal emitted by the laser transmitter received by the wind measuring device; In this embodiment, when the wind measuring device aligns with the laser emitter during its rotation, the wind measuring device receives the laser signal emitted by the laser emitter.

[0040] 302. Based on the time point when the wind measuring device and the laser emitter are aligned, and the wind speed deviation measured by the wind measuring device; In this embodiment, when the wind measuring device receives the laser signal, it records the timestamp at this time as the alignment time point. For each alignment time point, it also records the wind speed offset measured by the wind measuring device. The alignment time point and the corresponding wind speed offset data are stored and analyzed for subsequent wind angle calibration and wind speed correction.

[0041] Specifically, when the wind measuring device is aligned with the laser emitter, the alignment time point and the wind speed offset collected by the wind measuring device at the alignment time point are recorded, thus establishing a mapping relationship between the wind speed offset and the alignment time point.

[0042] 303. Based on the time point, the angular velocity of the hub, and the distance between the anemometer and the center of the hub, calculate the rotational linear velocity of the anemometer. In this embodiment, the time point is the alignment time point. By determining the time point, the angular velocity of the hub, and the distance between the wind measuring device and the center of the hub, the rotational linear velocity of the wind measuring device can be determined using the formula V1=WR, where V1 is the rotational linear velocity of the wind measuring device, W is the angular velocity collected by the wind measuring device or the wind turbine generator, and R is the distance between the wind measuring device and the center of the hub.

[0043] 304. Obtain the time point when the wind measuring device is aligned with the two target lasers, and the wind speed offset measured by the wind measuring device at the two time points; In this embodiment, the wind measuring device is obtained at the time point when it is aligned with the two target lasers, and the wind speed offset measured by the wind measuring device at the two time points is obtained.

[0044] 305. Calculate the rotational linear velocity of the wind measuring device based on the positions of the two target lasers and the time point when they are aligned; In this embodiment, the target laser is a laser emitter. By determining the installation positions of the two target lasers, the angle formed by the target laser and the center point of the wheel hub is determined, and then the angular velocity is determined. Then, by taking the known length from the laser to the center point of the wheel hub as the same as the length from the wind measuring device to the center point of the wheel hub, the rotational linear velocity of the wind measuring device is calculated.

[0045] 306. Select one of the two wind speed offsets that meets the preset conditions as the wind speed offset of the wind measuring device; In this embodiment, since the two wind speed offsets are collected within one rotation of the blade, the wind speed offset does not change much. The first wind speed offset can be used as the wind speed offset of the wind measuring device, or the second wind speed offset can be used as the wind speed offset of the wind measuring device. Alternatively, the average value of the first and second wind speed offsets can be calculated as the wind speed offset of the wind measuring device.

[0046] 307. Calculate the difference between the wind speed offset and the rotational linear velocity; In this embodiment, the formula v-wr is applied, where v is the wind speed offset and wr is the rotational linear velocity calculated from the angular velocity and the radius from the wind measuring device to the center point of the hub. By calculating the difference between the wind speed offset and the rotational linear velocity, and further judging the numerical relationship between the difference and the preset fault tolerance range, it is determined whether the blade rotation plane of the wind turbine is perpendicular to the wind direction.

[0047] In practical applications, for example, if the difference between the wind speed offset and the rotational linear velocity is calculated to be 10, and the tolerance range is [-5, 5], then the difference exceeds the tolerance range, indicating that the blade rotation plane is not perpendicular to the wind direction. Furthermore, since 10 is greater than the tolerance range [-5, 5], it means that the wind turbine is facing to the left. Here, the angle of facing to the left is the angle of the observer facing the wind turbine from in front of it. A "wind turbine is facing to the left" alarm is issued, and the blade rotation plane is controlled to rotate counterclockwise.

[0048] On the other hand, it can also be determined by calculating the difference between the wind speed offset and the rotational linear velocity, and then calculating the relationship between the absolute value of the difference and the tolerance coefficient, where the tolerance coefficient is the positive extreme point of the tolerance interval. As in the above embodiment, when the tolerance interval is [-5, 5], the tolerance coefficient is 5. This allows for the determination that the blade rotation plane is not perpendicular to the wind direction.

[0049] 308. Determine the numerical relationship between the difference and the preset tolerance range; 309. Determine whether the blade rotation plane of a wind turbine is perpendicular to the wind direction based on numerical relationships; 310. If the difference is within the preset tolerance range, ensure that the blade rotation plane of the wind turbine is perpendicular to the wind direction and keep the wind turbine in its current position. 311. If the difference is not within the preset tolerance range, the adjustment direction of the wind turbine generator set shall be determined based on the numerical relationship and the difference, and the windward direction of the wind turbine generator set shall be adjusted.

[0050] In this embodiment, if the difference is not within the preset tolerance range, the adjustment direction of the wind turbine generator set is determined based on the numerical relationship and the difference, and the wind turbine generator set is adjusted based on the adjustment direction.

[0051] Specifically, if it is a single laser emitter installed directly below the nacelle, if v-wr>a, it means the wind turbine is facing to the right. Here, the angle of facing to the right is the angle from which the observer faces the wind turbine from in front of it. A "wind turbine facing to the right" alarm is issued, and the blade rotation plane is controlled to rotate clockwise. If wr-v>a, or v-wr<-|a|, it means the wind turbine is facing to the left. Here, the angle of facing to the left is the angle from which the observer faces the wind turbine from in front of it. Since wr>v, a "wind turbine facing to the left" alarm is issued, and the blade rotation plane is controlled to rotate counterclockwise.

[0052] This embodiment, based on the previous embodiment, describes in detail how, if the difference is within a preset tolerance range, the blade rotation plane of the wind turbine is determined to be perpendicular to the wind direction, and the wind turbine is kept in its current position; if the difference is not within the preset tolerance range, the adjustment direction of the wind turbine is determined based on the numerical relationship and the difference, and the windward direction of the wind turbine is adjusted. Compared with the traditional method, this embodiment clarifies the specific adjustment method of determining the adjustment direction of the wind turbine based on the numerical relationship and the difference, and adjusting the wind turbine based on the adjustment direction.

[0053] The wind detection method in the embodiments of the present invention has been described above. The wind detection device in the embodiments of the present invention will be described below. Please refer to [link / reference]. Figure 4 One embodiment of the wind detection device in this invention includes: The speed acquisition module 401 is used to determine the wind speed offset measured by the wind measuring device and the rotational linear velocity of the wind measuring device, wherein the wind speed offset is the velocity component of the relative velocity of the wind speed with respect to the rotational linear velocity in the direction of the rotational linear velocity. Orientation determination module 402 is used to analyze whether the blade rotation plane of the wind turbine is perpendicular to the wind direction based on the wind speed offset and the rotation linear velocity.

[0054] In this embodiment, the speed acquisition module 401 is specifically used for: The wind measuring device receives the laser signal emitted by the laser emitter; based on the laser signal, it records the time point at which the wind measuring device aligns with the laser emitter, as well as the wind speed offset measured by the wind measuring device; based on the time point, the angular velocity of the hub, and the distance between the wind measuring device and the center of the hub, it calculates the rotational linear velocity of the wind measuring device.

[0055] In this embodiment, the speed acquisition module 401 is further configured to: The time point at which the wind measuring device aligns with the two target lasers is obtained, as well as the wind speed offset measured by the wind measuring device at the two time points, wherein the two target lasers are any two of the at least two laser emitters; the rotational linear velocity of the wind measuring device is calculated based on the position of the two target lasers and the time point at which they are aligned; one of the two wind speed offsets that satisfies a preset condition is selected as the wind speed offset of the wind measuring device.

[0056] Based on the previous embodiment, this embodiment describes in detail the specific functions of each module and the unit composition of some modules. Through the above modules, the specific functions of the original modules are refined, the operation of the wind control device is improved, its operational reliability is enhanced, and the actual logic between each step is clarified, thereby improving the practicality of the device.

[0057] Please see Figure 5 One embodiment of the wind device in this invention includes: The speed acquisition module 401 is used to determine the wind speed offset measured by the wind measuring device and the rotational linear velocity of the wind measuring device, wherein the wind speed offset is the velocity component of the relative velocity of the wind speed with respect to the rotational linear velocity in the direction of the rotational linear velocity. Orientation determination module 402 is used to analyze whether the blade rotation plane of the wind turbine is perpendicular to the wind direction based on the wind speed offset and the rotation linear velocity. Adjustment module 403 is used to adjust the windward direction of the wind turbine generator set based on the analysis results.

[0058] In this embodiment, the orientation determination module 402 is specifically used for: Calculate the difference between the wind speed offset and the rotational linear velocity; determine the numerical relationship between the difference and a preset tolerance range; and determine whether the blade rotation plane of the wind turbine is perpendicular to the wind direction based on the numerical relationship.

[0059] In this embodiment, the adjustment module 403 is specifically used for: If the difference is within a preset tolerance range, the blade rotation plane of the wind turbine is determined to be perpendicular to the wind direction, and the wind turbine is kept in its current position; if the difference is not within the preset tolerance range, the adjustment direction of the wind turbine is determined based on the numerical relationship and the difference, and the windward direction of the wind turbine is adjusted.

[0060] Based on the previous embodiment, this embodiment describes in detail the specific functions of each module and the unit composition of some modules. Through the above modules, the specific functions of the original modules are refined, the operation of the wind control device is improved, its operational reliability is enhanced, and the actual logic between each step is clarified, thereby improving the practicality of the device.

[0061] above Figure 4 and Figure 5 The wind detection device in the embodiments of the present invention will be described in detail from the perspective of modular functional entities. The electronic device in the embodiments of the present invention will be described in detail from the perspective of hardware processing.

[0062] Figure 6This is a schematic diagram of the structure of an electronic device 600 provided in an embodiment of the present invention. The electronic device 600 can vary significantly due to different configurations or performance characteristics. It may include one or more central processing units (CPUs) 610 (e.g., one or more processors) and a memory 620, and one or more storage media 630 (e.g., one or more mass storage devices) for storing application programs 633 or data 632. The memory 620 and storage media 630 can be temporary or persistent storage. The program stored in the storage media 630 may include one or more modules (not shown in the diagram), each module may include a series of request operations on the electronic device 600. Furthermore, the processor 610 may be configured to communicate with the storage media 630 to execute a series of request operations on the electronic device 600 to implement the various steps of the aforementioned wind detection method, or the various steps of the aforementioned wind control method.

[0063] Electronic device 600 may also include one or more power supplies 640, one or more wired or wireless network interfaces 650, one or more input / output interfaces 660, and / or one or more operating systems 631, such as Windows Server, Mac OS X, Unix, Linux, FreeBSD, etc. Those skilled in the art will understand that... Figure 6 The illustrated electronic device structure does not constitute a limitation on the electronic device provided in this application. It may include more or fewer components than illustrated, or combine certain components, or have different component arrangements.

[0064] The present invention also provides a computer-readable storage medium, which may be a non-volatile computer-readable storage medium or a volatile computer-readable storage medium, wherein the computer-readable storage medium stores a request that, when the request is executed on a computer, causes the computer to perform the various steps of the above-described wind detection method, or the various steps of the above-described wind detection method.

[0065] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working process of the system, device, or unit described above can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0066] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several requests to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0067] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A wind detection method, applied to wind turbine generator sets, characterized in that, The wind turbine generator set includes: a hub, at least two blades, a nacelle, a wind measuring device fixed to the outer surface of the hub, and at least one laser emitter disposed on the outer surface of the nacelle; the hub is rotatably connected to the nacelle, and the at least two blades are fixedly connected to the hub and drive the hub to rotate; the wind measuring device is installed parallel to each of the at least two blades at the midpoint between every two blades, and is installed in front of the at least two blades; the wind detection method includes: When the wind measuring device rotates to align with the laser emitter, the wind speed offset measured by the wind measuring device and the rotational linear velocity of the wind measuring device are determined, wherein the wind speed offset is the velocity component of the relative velocity of the wind speed with respect to the rotational linear velocity in the direction of the rotational linear velocity. Based on the wind speed offset and the rotational linear velocity, determine whether the blade rotation plane of the wind turbine is perpendicular to the wind direction; Determining the wind speed offset measured by the wind measuring device and the rotational linear velocity of the wind measuring device includes: acquiring the laser signal emitted by the laser emitter received by the wind measuring device; recording the time point at which the wind measuring device aligns with the laser emitter based on the laser signal, and the wind speed offset measured by the wind measuring device; the formula for calculating the wind speed offset is as follows: L is the distance between the acoustic pulse transmitter and the receiver. This refers to the time it takes for sound waves to travel downwind from the transmitter to the receiver. The wind speed offset is the relative velocity of the wind speed with respect to the rotational linear velocity, which is the velocity component in the direction of the rotational linear velocity. Based on the time point, the angular velocity of the hub, and the distance between the wind measuring device and the center of the hub, the rotational linear velocity of the wind measuring device is calculated. The formula for calculating the rotational linear velocity is V1=WR, where V1 is the rotational linear velocity of the wind measuring device, W is the angular velocity collected by the wind measuring device or wind turbine, and R is the distance between the wind measuring device and the center of the hub.

2. The wind detection method according to claim 1, characterized in that, The wind measuring device includes a pair of probes, and the line connecting the pair of probes is parallel to the plane of rotation of the at least two blades.

3. The wind detection method according to claim 1, characterized in that, If the at least one laser emitter is at least two laser emitters, determining the wind speed offset measured by the wind measuring device and the rotational linear velocity of the wind measuring device further includes: The time point when the wind measuring device is aligned with the two target lasers is obtained, as well as the wind speed offset measured by the wind measuring device at the two time points, wherein the two target lasers are any two of the at least two laser emitters; The rotational linear velocity of the wind measuring device is calculated based on the positions of the two target lasers and the time point at which they are aligned. Choose one of the two wind speed offsets that meets the preset conditions as the wind speed offset of the wind measuring device.

4. The wind detection method according to claim 1, characterized in that, The step of determining whether the blade rotation plane of the wind turbine is perpendicular to the wind direction based on the wind speed offset and the rotational linear velocity includes: Calculate the difference between the wind speed offset and the rotational linear velocity; Determine the numerical relationship between the difference and the preset tolerance range; Based on the numerical relationship, determine whether the blade rotation plane of the wind turbine is perpendicular to the wind direction.

5. The wind detection method according to claim 4, characterized in that, After determining whether the blade rotation plane of the wind turbine is perpendicular to the wind direction based on the wind speed offset and the rotational linear velocity, the method further includes: If the difference is within a preset tolerance range, the blade rotation plane of the wind turbine is determined to be perpendicular to the wind direction, and the wind turbine is kept in its current position. If the difference is not within the preset tolerance range, the adjustment direction of the wind turbine generator set is determined based on the numerical relationship and the difference, and the windward direction of the wind turbine generator set is adjusted.

6. A wind detection device for performing the wind detection method according to any one of claims 1-5, characterized in that, The wind detection device includes: The speed acquisition module is used to determine the wind speed offset measured by the wind measuring device and the rotational linear velocity of the wind measuring device, wherein the wind speed offset is the velocity component of the relative velocity of the wind speed with respect to the rotational linear velocity in the direction of the rotational linear velocity. The orientation determination module is used to analyze whether the blade rotation plane of the wind turbine is perpendicular to the wind direction based on the wind speed offset and the rotation linear velocity.

7. An electronic device, characterized in that, The electronic device includes a memory and at least one processor, the memory storing instructions; the at least one processor invokes the instructions in the memory to cause the electronic device to perform the various steps of the wind detection method as described in any one of claims 1-5.

8. A computer-readable storage medium storing instructions thereon, characterized in that, When the instructions are executed by the processor, they implement the various steps of the wind detection method as described in any one of claims 1-5.

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