A method and system for detecting verticality of wind turbine tower

Abstract

The invention discloses a method and system for detecting the verticality of a wind turbine tower. In a rectangular coordinate system, the azimuths of two points P1 and P2 are recorded with the due north direction as the 0° position; the wind turbine tower is measured at the two points P1 and P2 respectively to obtain the coordinates of the corresponding wind turbine tower bottom and top; the inclination amplitude of the wind turbine tower top at the points P1 and P2 is calculated; the horizontal distance S of the synthetic tower top center point offset from the tower bottom center point is calculated according to the inclination amplitude of the wind turbine tower top at the points P1 and P2; and finally the wind turbine tower inclination tanθ and the synthetic wind turbine tower top inclination azimuth β relative to the due north direction are determined. The invention can accurately calculate the verticality and inclination azimuth of the wind turbine, thereby improving the measurement accuracy and work efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of verticality measurement, and in particular relates to a method and system for detecting the verticality of a tower of a wind turbine generator set. Background Art

[0002] The tower is an important component of a wind turbine. It mainly plays a supporting role in the wind turbine and absorbs complex and changeable loads such as unit vibration and torque load. During the operation of the wind turbine, the tower will experience a certain degree of deformation such as swaying and twisting. In addition, the tower will also be affected by factors such as material changes, component failure and foundation settlement, and may tilt.

[0003] Too much inclination of the tower will affect the normal operation of the wind turbine generator set, and in serious cases, it will cause safety accidents. Therefore, it is necessary to detect the verticality of the wind turbine generator set. How to standardize the detection method, reduce measurement errors, and improve detection quality and efficiency is the focus of wind turbine tower verticality detection technology.

[0004] At present, some wind turbines install inclination sensors on the tower flange surface to monitor the verticality of the wind turbine online. Under different working conditions of the wind turbine, the inclination of the tower varies greatly. Affected by the flange surface process, the measurement accuracy is low and the installation cost is high. It is not well suitable for the verticality detection of large quantities of wind turbines. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a method and system for detecting the verticality of a wind turbine tower in view of the deficiencies in the above-mentioned prior art, so as to solve the technical problems of large measurement errors and low detection efficiency.

[0006] The present invention adopts the following technical solutions:

[0007] A method for detecting the verticality of a wind turbine tower comprises the following steps:

[0008] Points P1 and P2 are respectively set on the tower of the wind turbine generator set, and the line connecting points P1 and P2 and the center point of the wind turbine generator set is set perpendicularly, with the true north direction as the 0° position, and the azimuth ∠P1 of point P1 selected in step S1 is recorded;

[0009] The tower is measured at the positions of point P1 and point P2 respectively to obtain the corresponding coordinate data of the left and right sides of the bottom and top of the tower, and the inclination amplitude a of the tower top at point P1 and the inclination amplitude b of the tower top at point P2 are determined by using the coordinate data;

[0010] According to the inclination amplitude a of the tower top at point P1 and the inclination amplitude b of the tower top at point P2, the horizontal distance S of the center point of the synthesized tower top offset from the center point of the tower bottom is calculated, and the inclination tanθ is determined according to the horizontal distance S;

[0011] According to the inclination amplitude a of the tower top at point P1, the inclination amplitude b of the tower top at point P2, and the azimuth angle ∠P1 at point P1, the synthetic inclination azimuth angle β of the tower top relative to the north direction is calculated, and the verticality detection of the wind turbine tower is completed in combination with the inclination tanθ.

[0012] Specifically, the distance from point P1 and point P2 to the wind turbine generator set is set to 1.5-2.0H, where H is the height of the tower.

[0013] Specifically, the inclination amplitude a of the tower top at point P1 is:

[0014]

[0015] Wherein, H is the tower height, x1, y1 and x2, y2 are the left and right coordinates of the bottom of the tower at point P1, and x3, y3 and x4, y4 are the left and right coordinates of the top of the tower at point P1.

[0016] Specifically, the inclination amplitude b of the tower top at point P2 is:

[0017]

[0018] Wherein, H is the tower height, x1', y1' and x2', y2' are the left and right coordinates of the bottom of the tower at the position of point P2, and x3', y3' and x4', y4' are the left and right coordinates of the top of the tower at the position of point P2.

[0019] Specifically, the inclination tanθ is:

[0020] tanθ=S / H

[0021] Where H is the tower height.

[0022] Furthermore, the maximum allowable value of the inclination tanθ is 0.004.

[0023] Furthermore, the horizontal distance S is:

[0024]

[0025] 8. The method for detecting the verticality of a wind turbine tower according to claim 1, wherein the tilt azimuth angle β is:

[0026]

[0027] Further, if the inclination amplitude a of the tower top at point P1 is positive and the inclination amplitude b of the tower top at point P2 is positive, then the inclination azimuth angle β∈(0,90°); if the inclination amplitude a of the tower top at point P1 is positive and the inclination amplitude b of the tower top at point P2 is negative, then the inclination azimuth angle β∈(90°,180°); if the inclination amplitude a of the tower top at point P1 is negative and the inclination amplitude b of the tower top at point P2 is negative, then the inclination azimuth angle β∈(180°,270°); if the inclination amplitude a of the tower top at point P1 is negative and the inclination amplitude b of the tower top at point P2 is positive, then the inclination azimuth angle β∈(270°,360°).

[0028] In a second aspect, an embodiment of the present invention provides a wind turbine tower verticality detection system, comprising:

[0029] The layout module sets points P1 and P2 on the tower of the wind turbine generator set respectively. The lines connecting points P1 and P2 and the center point of the wind turbine generator set are set perpendicularly, with the north direction as the 0° position, and the azimuth angle ∠P1 of point P1 selected by the layout module is recorded;

[0030] The measuring module measures the tower at the positions of point P1 and point P2 respectively, obtains the coordinate data of the corresponding left and right sides of the bottom and top of the tower, and uses the coordinate data to determine the inclination amplitude a of the tower top at point P1 and the inclination amplitude b of the tower top at point P2;

[0031] A calculation module calculates a horizontal distance S between the center point of the synthetic tower top and the center point of the tower bottom according to the inclination amplitude a of the tower top at point P1 and the inclination amplitude b of the tower top at point P2 obtained by the measurement module, and determines the inclination tanθ according to the horizontal distance S;

[0032] The detection module calculates the synthetic inclination azimuth β of the tower top relative to the north direction based on the inclination amplitude a of the tower top at point P1 and the inclination amplitude b of the tower top at point P2 obtained by the measurement module, as well as the azimuth ∠P1 of point P1 determined by the azimuth module, and completes the verticality detection of the wind turbine tower in combination with the inclination tanθ obtained by the calculation module.

[0033] Compared with the prior art, the present invention has at least the following beneficial effects:

[0034] A method for detecting the verticality of a wind turbine tower determines the tower state by remotely measuring the horizontal distance and azimuth of the tower top center point offset from the tower bottom center point. The synthesized tower inclination data can reflect the tower inclination and azimuth. The detection operation is convenient, and the measurement accuracy and efficiency are effectively improved, and the safety risk is reduced. The method is of great significance to the safety of the wind turbine, and the verticality and inclination azimuth of the wind turbine can be accurately calculated, thereby reducing the safety risk and improving the measurement accuracy and work efficiency.

[0035] Furthermore, at present, the tower heights of most wind turbines are between 60m and 140m. If the measurement position is too close to the tower, the tower top cannot be observed, and if the measurement position is too far from the tower, the measurement error will be large. Depending on the tower height, the best effect is achieved when the measurement distance is set to 1.5 to 2.0 times the tower height.

[0036] Furthermore, because the inclination azimuth of the tower is uncertain before measurement, when only one measuring point is selected, the inclination amplitude of the tower top obtained at different azimuths is different. The angle between the inclination azimuth and the line connecting the measuring point position and the tower is 90°, which cannot accurately reflect the inclination amplitude and azimuth of the tower top. By measuring the inclination amplitudes a and b at two points respectively, the inclination amplitude and azimuth of the tower top can be accurately calculated.

[0037] Furthermore, the inclination tanθ is the ratio of the inclination amplitude of the tower top to the tower height. There are many types of wind turbines with different tower heights. Different tower heights correspond to different inclination amplitudes of the tower top. The inclination tanθ can accurately determine the inclination amplitudes of towers at different heights.

[0038] Furthermore, the maximum inclination value is set mainly based on the requirements for the inclination of wind turbines in Section 7.2.5 of the GB50135-2019 High-rise Structure Design Standard. When the inclination is less than 0.004, it meets the standard requirements and can ensure safe and reliable operation of the unit.

[0039] Furthermore, the tilt amplitudes measured and calculated in the two directions of point P1 and point P2 are a and b respectively. S is the vector sum of a and b, which can accurately represent the horizontal tilt amplitude and direction of the tower top and timely discover hidden dangers in the tower structure.

[0040] Furthermore, the azimuth angle β can accurately reflect the direction of the tower inclination. Taking point P1 as the reference point, the calculated tower inclination azimuth angle is Due to the influence of the wind farm terrain, the measurement position is not necessarily located in the due north or due south. ∠P1 is the angle between the line connecting point P1 and the center point of the tower and the due north direction. The actual tilt azimuth is

[0041] Furthermore, the period of the tangent function is 180°, and within the range of 0 to 360°, a tangent value corresponds to two azimuths in opposite directions, so the quadrant in which the azimuth is located is determined according to the positive or negative value of the defined tilt amplitude.

[0042] Furthermore, the period of the tangent function is 180°, and within the range of 0 to 360°, a tangent value corresponds to two azimuths in opposite directions, so the quadrant in which the azimuth is located is determined according to the positive or negative value of the defined tilt amplitude.

[0043] It can be understood that the beneficial effects of the second aspect mentioned above can be found in the relevant description of the first aspect mentioned above, and will not be repeated here.

[0044] In summary, the present invention is easy to use, highly accurate, and highly adaptable, reduces safety risks, and improves measurement accuracy and efficiency.

[0045] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 A top view of the present invention for calculating the verticality of the tower;

[0047] Figure 2 This is a schematic diagram of the tower verticality detection method implemented in the present invention. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0049] In the description of the present invention, it should be understood that the terms “include” and “comprises” indicate the presence of described features, wholes, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or collections thereof.

[0050] It should also be understood that the terms used in the present specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in the present specification and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0051] It should be further understood that the term "and / or" used in the present specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes these combinations. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects are in an "or" relationship.

[0052] It should be understood that, although the terms first, second, third, etc. may be used to describe preset ranges, etc. in the embodiments of the present invention, these preset ranges should not be limited to these terms. These terms are only used to distinguish preset ranges from each other. For example, without departing from the scope of the embodiments of the present invention, the first preset range may also be referred to as the second preset range, and similarly, the second preset range may also be referred to as the first preset range.

[0053] The word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrases "if it is determined" or "if (stated condition or event) is detected" may be interpreted as "when it is determined" or "in response to determining" or "when detecting (stated condition or event)" or "in response to detecting (stated condition or event)", depending on the context.

[0054] Various structural schematic diagrams of the embodiments disclosed in the present invention are shown in the accompanying drawings. These figures are not drawn to scale, and some details are magnified and some details may be omitted for the purpose of clear expression. The shapes of various regions and layers shown in the figures and the relative sizes and positional relationships therebetween are only exemplary, and may deviate in practice due to manufacturing tolerances or technical limitations, and those skilled in the art may additionally design regions / layers with different shapes, sizes, and relative positions according to actual needs.

[0055] The present invention provides a method for detecting the verticality of a wind turbine tower. Two points P1 and P2 are selected, and the two points P1 and P2 are perpendicular to the line connecting the center points of the wind turbine. The theodolite is placed at the two selected points in sequence, and the theodolite is provided with a telescope, a horizontal circle and a vertical circle. Specifically, in a rectangular coordinate system, the due north direction is taken as the 0° position, and the azimuths of the two points P1 and P2 are recorded; the wind turbine tower is measured at the position of the point P1 to obtain the left coordinates (x1, y1) and the right coordinates (x2, y2) of the bottom of the wind turbine tower, and the left coordinates (x3, y3) and the right coordinates (x4, y4) of the top of the wind turbine tower; the point P1 is calculated. The wind turbine tower top inclination amplitude a at the position; then the wind turbine tower is measured at the position of point P2, and the coordinates of the bottom and top of the wind turbine tower are obtained as (x1', y1'), (x2', y2'), (x3', y3') and (x4', y4'), and the wind turbine tower top inclination amplitude b at the position of point P2 is calculated; according to the wind turbine tower top inclination amplitude at the position of point P1 and point P2, the horizontal distance S of the synthetic tower top center point offset from the tower bottom center point is calculated; finally, the wind turbine tower inclination tanθ and the synthetic wind turbine tower top inclination azimuth β relative to the due north direction are determined. The present invention can accurately calculate the verticality and inclination azimuth of the wind turbine, reduce safety risks, and improve measurement accuracy and work efficiency.

[0056] See also Figure 1 and Figure 2 The present invention provides a method for detecting the verticality of a wind turbine tower, comprising the following steps:

[0057] S1. Select points P1 and P2 at a height of 1.5 to 2.0 times the wind turbine tower height, and set the points P1 and P2 perpendicular to the line connecting the center point of the wind turbine;

[0058] The distance from point P1 and point P2 to the wind turbine is set to 1.5~2.0H, where H is the tower height.

[0059] S2, taking the north direction as the 0° position, record the azimuths of the points P1 and P2 selected in step S1, the azimuths are ∠P1 and ∠P2 respectively. If the point P1 is located in the north direction, ∠P1=0°, and the point P2 is located in the east direction, ∠P2=90°;

[0060] S3, measure the tower at point P1 to obtain the left coordinates (x1, y1) and right coordinates (x2, y2) of the bottom of the tower, and the left coordinates (x3, y3) and right coordinates (x4, y4) of the top of the tower;

[0061] S4, using the coordinate data of the tower bottom and the tower top obtained in step S3 to calculate the inclination amplitude a of the tower top at point P1;

[0062] The specific inclination amplitude a of the tower top at point P1 is:

[0063]

[0064] Where H is the tower height.

[0065] S5. Measure the tower at point P2 to obtain two sets of data (x1', y1') and (x2', y2'), (x3', y3') and (x4', y4') at the bottom and top of the tower, respectively, and calculate the inclination amplitude b of the top of the tower at point P2;

[0066] The specific inclination amplitude b of the tower top at point P2 is:

[0067]

[0068] Where H is the tower height.

[0069] S6, calculating the horizontal distance S of the center point of the tower top offset from the center point of the tower bottom according to the inclination amplitude a of the tower top at point P1 obtained in step S4 and the inclination amplitude b of the tower top at point P2 obtained in step S5, and determining the inclination tanθ according to the horizontal distance S;

[0070] The maximum allowable value of the inclination tanθ is 0.004.

[0071] The horizontal distance S is:

[0072]

[0073] Among them, a is the inclination amplitude of the tower top at point P1, and b is the inclination amplitude of the tower top at point P2.

[0074] The horizontal distance between the center point of the tower top and the center point of the tower bottom, that is, the inclination of the tower top is tanθ=S / H, where H is the tower height;

[0075] S7. According to the inclination amplitude a of the tower top at point P1 obtained in step S4, the inclination amplitude b of the tower top at point P2 obtained in step S5, and the azimuth angle ∠P1 of point P1 obtained in step S2, calculate the inclination azimuth angle β of the synthetic tower top relative to the north direction, and combine it with the inclination tanθ obtained in step S6 to complete the verticality detection of the wind turbine tower.

[0076] The tilt azimuth angle β is:

[0077]

[0078] If the inclination amplitude a of the tower top at point P1 is positive, and the inclination amplitude b of the tower top at point P2 is positive, then the inclination azimuth β∈(0,90°);

[0079] If the inclination amplitude a of the tower top at point P1 is positive, and the inclination amplitude b of the tower top at point P2 is negative, then the inclination azimuth β∈(90°, 180°);

[0080] If the inclination amplitude a of the tower top at point P1 is negative, and the inclination amplitude b of the tower top at point P2 is negative, then the inclination azimuth β∈(180°, 270°);

[0081] If the inclination amplitude a of the tower top at point P1 is negative and the inclination amplitude b of the tower top at point P2 is positive, then the inclination azimuth angle β∈(270°, 360°).

[0082] In another embodiment of the present invention, a wind turbine tower verticality detection system is provided, which can be used to implement the above-mentioned wind turbine tower verticality detection method. Specifically, the wind turbine tower verticality detection system includes a layout module, a measurement module, a calculation module and a detection module.

[0083] Among them, the layout module sets points P1 and P2 on the tower of the wind turbine respectively, and the line connecting points P1 and P2 and the center point of the wind turbine is set perpendicularly, with the north direction as the 0° position, and records the azimuth ∠P1 of point P1 selected by the layout module;

[0084] The measuring module measures the tower at the positions of point P1 and point P2 respectively, obtains the coordinate data of the corresponding left and right sides of the bottom and top of the tower, and uses the coordinate data to determine the inclination amplitude a of the tower top at point P1 and the inclination amplitude b of the tower top at point P2;

[0085] A calculation module calculates a horizontal distance S between the center point of the synthetic tower top and the center point of the tower bottom according to the inclination amplitude a of the tower top at point P1 and the inclination amplitude b of the tower top at point P2 obtained by the measurement module, and determines the inclination tanθ according to the horizontal distance S;

[0086] The detection module calculates the synthetic inclination azimuth β of the tower top relative to the north direction based on the inclination amplitude a of the tower top at point P1 and the inclination amplitude b of the tower top at point P2 obtained by the measurement module, as well as the azimuth ∠P1 of point P1 determined by the azimuth module, and completes the verticality detection of the wind turbine tower in combination with the inclination tanθ obtained by the calculation module.

[0087] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings here can usually be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0088] The present invention has been actually used in Huaneng Wenchang Wind Farm and Huaneng Saltohai Wind Farm, and has good effect. It can accurately measure the tilt state of the wind turbine tower. The present invention has low detection cost, high measurement accuracy and simple calculation method. The specific data are as follows:

[0089] Example 1 (#1)

[0090] According to the above steps, two sets of data are obtained, namely (42°44′, 274°56′)(44°39′, 274°56′)(43°2′, 299°32′)(44°22′, 292°32′) and (10°7′, 275°16′)(12°20′, 275°16′)(10°31′, 302°56′)(204°10′, 302°56′).

[0091] The maximum tilt distance of the tower top and the tilt azimuth of the tower top relative to the north direction are obtained as S = 137.02 mm and β = 30° respectively. Assuming that the tower height H is 65 m, the inclination of the tower is tanθ = S / H = 0.0021.

[0092] Example 2 (#5)

[0093] According to the above steps, two sets of data are obtained, namely (316°28′, 273°3′)(318°0′, 273°3′)(316°41′, 294°1′)(317°44′, 294°1′) and (238°22′, 273°49′)(240°5′, 273°49′)(238°38′, 297°10′)(239°47′, 297°10′.

[0094] The maximum tilt distance of the tower top and the tilt azimuth of the tower top relative to the north direction are obtained as S = 113.28 mm and D = 144°10′42″ respectively. Assuming that the tower height H is 65 m, the inclination of the tower is tanθ = S / H = 0.00174.

[0095] Therefore, the present invention uses a theodolite to measure the verticality of the tower, and can accurately measure the tilt state of the tower by synthesizing the tilt distance, and can obtain the tower tilt and tilt azimuth through calculation.

[0096] In summary, the present invention provides a method and system for detecting the verticality of a wind turbine tower. By synthesizing the inclination data of the tower, the inclination and azimuth of the tower can be reflected. The detection operation is convenient, the measurement accuracy and efficiency can be effectively improved, and the safety risks can be reduced, which is of great significance to the safety of wind turbines.

[0097] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented in one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that include computer-usable program code.

[0098] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0099] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0100] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0101] The above contents are only for explaining the technical idea of ​​the present invention and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the present invention shall fall within the protection scope of the claims of the present invention.

Claims

1. A method for detecting the verticality of a wind turbine tower, characterized in that: The following steps are involved: Points P1 and P2 are respectively set on the tower of the wind turbine generator set, and the line connecting points P1 and P2 and the center point of the wind turbine generator set is set perpendicularly, with the true north direction as the 0° position, and the azimuth ∠P1 of point P1 selected in step S1 is recorded; The tower is measured at the positions of point P1 and point P2 respectively to obtain the corresponding coordinate data of the left and right sides of the bottom and top of the tower. The inclination amplitude a of the tower top at point P1 and the inclination amplitude b of the tower top at point P2 are determined by using the coordinate data. The inclination amplitude a of the tower top at point P1 is specifically: Where H is the tower height, x1, y1 and x2, y2 are the left and right coordinates of the bottom of the tower at point P1, and x3, y3 and x4, y4 are the left and right coordinates of the top of the tower at point P1; The specific inclination amplitude b of the tower top at point P2 is: Wherein, H is the tower height, x1', y1' and x2', y2' are the left and right coordinates of the bottom of the tower at the position of point P2, and x3', y3' and x4', y4' are the left and right coordinates of the top of the tower at the position of point P2; According to the inclination amplitude a of the tower top at point P1 and the inclination amplitude b of the tower top at point P2, the horizontal distance S of the center point of the synthesized tower top offset from the center point of the tower bottom is calculated, and the inclination tanθ is determined according to the horizontal distance S; The specific inclination tanθ is: tanθ=S / H Wherein, H is the tower height; The horizontal distance S is: ； According to the inclination amplitude a of the tower top at point P1, the inclination amplitude b of the tower top at point P2, and the azimuth angle ∠P1 at point P1, the synthetic inclination azimuth angle β of the tower top relative to the north direction is calculated, and the verticality detection of the wind turbine tower is completed in combination with the inclination tanθ.

2. The method for detecting the verticality of a wind turbine tower according to claim 1, characterized in that: The distance from point P1 and point P2 to the wind turbine is set to 1.5~2.0H, where H is the height of the tower.

3. The method for detecting the verticality of a wind turbine tower according to claim 1, characterized in that: The maximum allowable value of the inclination tanθ is 0.

004.

4. The method for detecting the verticality of a wind turbine tower according to claim 1, characterized in that: The tilt azimuth angle β is: 。 5. The method for detecting the verticality of a wind turbine tower according to claim 4, characterized in that: If the inclination amplitude a of the tower top at point P1 is positive and the inclination amplitude b of the tower top at point P2 is positive, then the inclination azimuth angle β∈(0,90°); if the inclination amplitude a of the tower top at point P1 is positive and the inclination amplitude b of the tower top at point P2 is negative, then the inclination azimuth angle β∈(90°,180°); if the inclination amplitude a of the tower top at point P1 is negative and the inclination amplitude b of the tower top at point P2 is negative, then the inclination azimuth angle β∈(180°,270°); if the inclination amplitude a of the tower top at point P1 is negative and the inclination amplitude b of the tower top at point P2 is positive, then the inclination azimuth angle β∈(270°,360°).

6. A wind turbine tower verticality detection system, characterized in that: include: The layout module sets points P1 and P2 on the tower of the wind turbine generator set respectively. The lines connecting points P1 and P2 and the center point of the wind turbine generator set are set perpendicularly, with the north direction as the 0° position, and the azimuth angle ∠P1 of point P1 selected by the layout module is recorded; The measurement module measures the tower at the positions of point P1 and point P2, obtains the corresponding coordinate data of the left and right sides of the bottom and top of the tower, and uses the coordinate data to determine the inclination amplitude a of the tower top at point P1 and the inclination amplitude b of the tower top at point P2; the inclination amplitude a of the tower top at point P1 is specifically: Where H is the tower height, x1, y1 and x2, y2 are the left and right coordinates of the bottom of the tower at point P1, and x3, y3 and x4, y4 are the left and right coordinates of the top of the tower at point P1; The specific inclination amplitude b of the tower top at point P2 is: Wherein, H is the tower height, x1', y1' and x2', y2' are the left and right coordinates of the bottom of the tower at the position of point P2, and x3', y3' and x4', y4' are the left and right coordinates of the top of the tower at the position of point P2; A calculation module calculates a horizontal distance S between the center point of the synthetic tower top and the center point of the tower bottom according to the inclination amplitude a of the tower top at point P1 and the inclination amplitude b of the tower top at point P2 obtained by the measurement module, and determines the inclination tanθ according to the horizontal distance S; The specific inclination tanθ is: tanθ=S / H Wherein, H is the tower height; The horizontal distance S is: ； The detection module calculates the synthetic inclination azimuth β of the tower top relative to the north direction based on the inclination amplitude a of the tower top at point P1 and the inclination amplitude b of the tower top at point P2 obtained by the measurement module, as well as the azimuth ∠P1 of point P1 determined by the azimuth module, and completes the verticality detection of the wind turbine tower in combination with the inclination tanθ obtained by the calculation module.

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