A method, apparatus, equipment and medium for testing the torque of a wind turbine tower.

Abstract

This invention provides a method, apparatus, equipment, and medium for torque testing of wind turbine towers, applicable to offshore wind turbine towers. The offshore wind turbine tower is equipped with a torque testing system, including multiple strain sensors and a data processing system. The data processing system is connected to the strain sensors, and the strain sensors are equipped with a torque testing circuit. The torque testing circuit includes multiple strain gauges, a first welding terminal, a second welding terminal, and a third welding terminal. The multiple strain gauges are connected to the first and second welding terminals, and the first, second, and third welding terminals are connected to the third welding terminal. The method includes: acquiring the strain values ​​of multiple strain gauges through the data processing system; calculating and measuring the torque based on the strain values; excluding abnormal torque data; sending the target torque data to a remote monitoring platform; and determining the target maximum torque value within a preset time based on the maximum torque value measured by the multiple strain sensors.

Description

Technical Field

[0001] This invention relates to the field of wind turbine towers, and more particularly to a method, apparatus, equipment, and medium for testing the torque of wind turbine towers. Background Technology

[0002] Offshore wind turbine towers serve as load transfer structures between the wind turbine foundation and the upper tower. In a real marine environment, the load from the upper wind turbine is transferred to the tower, and then from the tower to the jacket foundation. Therefore, the actual load at the connection between the jacket and the tower is crucial for the design. This location has six degrees of freedom of load: two mutually perpendicular horizontal loads, one vertical axial force, two mutually perpendicular horizontal bending moments, and one torque.

[0003] When testing the torque of a tower, the torque value is usually obtained by placing strain sensors on the surface of the tower. However, the strain gauges of the strain sensors are easily affected by temperature changes, tension, and bending moment, which affects the accuracy of the torque test results. Moreover, the existing strain sensors have a small measurement range and low measurement accuracy. In addition, the related technologies measure a single cross-section when measuring torque and do not monitor the structure under various long-term torque loads, making it impossible to identify the weak sections of the structure and thus strengthen the torsional resistance design of those weak sections. Summary of the Invention

[0004] In view of the above problems, methods, apparatus, equipment, and media for testing the torque of wind turbine towers are proposed to overcome or at least partially solve the above problems, including:

[0005] In a first aspect, embodiments of the present invention provide a torque testing method for a wind turbine tower, applied to an offshore wind turbine tower. The offshore wind turbine tower is equipped with a torque testing system, which includes multiple sets of strain sensors and a data processing system. The multiple sets of strain sensors are positioned at different heights on the surface of the offshore wind turbine tower, and the data processing system is connected to the multiple sets of strain sensors. The multiple sets of strain sensors are equipped with a torque testing circuit. The torque testing circuit includes multiple strain gauges, a first welding terminal, a second welding terminal, and a third welding terminal. The multiple strain gauges are connected to the first welding terminal and the second welding terminal. The first welding terminal, the second welding terminal, and the third welding terminal are connected. The method includes:

[0006] The data processing system acquires the voltage change values ​​of the plurality of strain gauges of the strain sensor when strain is generated;

[0007] The resistance change value of the multiple strain gauges is obtained based on the voltage change value of the multiple strain gauges;

[0008] Based on the resistance change values ​​of the plurality of strain gauges and the sensitivity coefficients of the plurality of strain gauges, the target measured strain values ​​of the plurality of strain gauges are obtained;

[0009] The measured torque of the offshore wind turbine tower is calculated based on the target measured strain values ​​of the multiple strain gauges and the parameters of the offshore wind turbine tower.

[0010] The data processing system identifies and eliminates abnormal measured torque data to obtain the target torque data.

[0011] The target torque data is sent to the remote monitoring platform;

[0012] Based on the target torque data under various working conditions obtained by the remote monitoring platform within a first preset time period, the maximum torque value measured by each group of strain sensors within the first preset time period is determined.

[0013] Based on the maximum torque value measured by each set of strain sensors within a first preset time period, the target maximum torque value of the offshore wind turbine tower within the first preset time period is determined.

[0014] Optionally, the plurality of strain gauges have terminals, and the plurality of strain gauges are connected to the first welding terminal and the second welding terminal through the terminals, wherein the connection method is as follows:

[0015] The first connector of the first strain gauge is connected to the first welding point of the first welding terminal;

[0016] The second terminal of the first strain gauge is connected to the second welding point of the first welding terminal;

[0017] The first terminal of the second strain gauge is connected to the third welding point of the first welding terminal;

[0018] The second connector of the second strain gauge is connected to the fourth welding point of the first welding terminal;

[0019] The first connector of the third strain gauge is connected to the first welding point of the second welding terminal;

[0020] The second connector of the third strain gauge is connected to the second welding point of the second welding terminal;

[0021] The first terminal of the fourth strain gauge is connected to the third welding point of the second welding terminal;

[0022] The second terminal of the fourth strain gauge is connected to the fourth welding point of the second welding terminal.

[0023] Optionally, the first welding terminal, the second welding terminal, and the third welding terminal are connected in the following manner:

[0024] The first welding point of the first welding terminal and the first welding point of the second welding terminal are connected to the second welding point of the third welding terminal;

[0025] The second welding point of the first welding terminal and the third welding point of the first welding terminal are connected to the first welding point of the third welding terminal;

[0026] The fourth welding point of the first welding terminal and the fourth welding point of the second welding terminal are connected to the fourth welding point of the third welding terminal;

[0027] The second welding point of the second welding terminal is connected to the third welding point of the third welding terminal.

[0028] Optionally, the data processing system is connected to the strain sensor and includes:

[0029] The first welding point of the third welding terminal is connected to the excitation voltage positive and the induction lead positive of the data processing system via two wires, respectively.

[0030] The second welding point of the third welding terminal is positively connected to the signal of the data processing system via a wire;

[0031] The third welding point of the third welding terminal is connected to the negative excitation voltage and the negative induction lead of the data processing system via two wires, respectively.

[0032] The fourth welding point of the third welding terminal is connected to the signal negative connection of the data processing system via a wire.

[0033] Optionally, the first strain gauge and the second strain gauge are arranged on one side of the offshore wind turbine tower, and the third strain gauge and the fourth strain gauge are arranged on the side opposite to the first strain gauge and the second strain gauge.

[0034] Optionally, the data processing system sets a sampling frequency and acquires the strain signal of the strain sensor according to the sampling frequency.

[0035] Optionally, the torque calculation formula for the offshore wind turbine tower is as follows:

[0036] T = W·τ,

[0037] τ=G·γ,

[0038]

[0039] γ=2ε,

[0040]

[0041] Wherein, T is the measured torque of the offshore wind turbine tower; W is the torsional section modulus of the offshore wind turbine tower; τ is the cross-sectional shear stress of the offshore wind turbine tower; G is the shear modulus of the offshore wind turbine tower; γ is the shear strain of the offshore wind turbine tower; υ is the Poisson's ratio of the material of the offshore wind turbine tower; ε is the torsional strain; E is the elastic modulus of the offshore wind turbine tower; A is the bridge arm coefficient of the circuit; ε 测 The measured strain values ​​of the plurality of strain gauges.

[0042] Optionally, the method further includes:

[0043] Measure the original and initial strain values ​​of the multiple strain gauges;

[0044] The target measured strain value is calculated based on the original and initial strain values ​​of the multiple strain gauges, using the following formula:

[0045] ε 测 =ε′ 测 -ε0,

[0046] Where, ε′ 测 ε0 represents the original measured strain value of the plurality of strain gauges; ε0 represents the initial strain value of the plurality of strain gauges.

[0047] Optionally, the initial strain value of the plurality of strain gauges is the average absolute value of the strain measured within a second preset time period when the average wind speed is within a preset wind speed range.

[0048] Optionally, the method further includes:

[0049] The parameters of the offshore wind turbine tower are obtained through a data processing system.

[0050] Optionally, the data processing system includes a torque calculation module for calculating the torque of the offshore wind turbine tower.

[0051] Optionally, calculating the torque of the offshore wind turbine tower based on the strain values ​​of the plurality of strain gauges includes:

[0052] The torque calculation module calculates the torque of the offshore wind turbine tower based on the target measured strain value and the parameters of the offshore wind turbine tower.

[0053] In a second aspect of the invention, a torque testing device for a wind turbine tower is provided, applied to an offshore wind turbine tower. The offshore wind turbine tower is equipped with a torque testing system, which includes a strain sensor and a data processing system. The strain sensor is disposed on the surface of the offshore wind turbine tower, and the data processing system is connected to the strain sensor. The strain sensor is equipped with a torque testing circuit. The torque testing circuit includes multiple strain gauges, a first welding terminal, a second welding terminal, and a third welding terminal. The multiple strain gauges are connected to the first welding terminal and the second welding terminal. The first welding terminal, the second welding terminal, and the third welding terminal are connected to the third welding terminal. The device includes:

[0054] The signal acquisition module is used to acquire the voltage change values ​​of the plurality of strain gauges of the strain sensor when strain is generated through the data processing system;

[0055] The resistance change value calculation module is used to obtain the resistance change value of the multiple strain gauges based on the voltage change value of the multiple strain gauges;

[0056] The strain value calculation module is used to obtain the target measured strain value of the multiple strain gauges based on the resistance change value of the multiple strain gauges and the sensitivity coefficient of the multiple strain gauges;

[0057] The torque measurement calculation module is used to calculate the measured torque of the offshore wind turbine tower based on the target measured strain values ​​of the multiple strain gauges and the parameters of the offshore wind turbine tower.

[0058] The target torque acquisition module is used to identify and exclude abnormal torque data through the data processing system to obtain target torque data.

[0059] The target torque data transmission module is used to transmit the target torque data to the remote monitoring platform;

[0060] The maximum torque value determination module is used to determine the maximum torque value measured by each group of strain sensors within the first preset time period based on the target torque data under various working conditions obtained by the remote monitoring platform within the first preset time period.

[0061] The target maximum torque value determination module is used to determine the target maximum torque value of the offshore wind turbine tower within the first preset time period based on the maximum torque value measured by each group of strain sensors within the first preset time period.

[0062] In a third aspect of the present invention, an electronic device is also provided, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, it implements the torque testing method for wind turbine towers as described above.

[0063] In a fourth aspect of the invention, a computer-readable storage medium is also provided, on which a computer program is stored, which, when executed by a processor, implements the torque testing method for a wind turbine tower as described above.

[0064] The embodiments of the present invention have the following advantages:

[0065] In this embodiment of the invention, the torque testing circuit eliminates the influence of tensile and compressive deformation and bending deformation, obtaining accurate torsional strain of the tower structure. It also creates a temperature compensation effect between strain gauges, avoiding the additional influence of ambient temperature changes on the test results of the strain gauges themselves. The torque testing circuit composed of multiple strain gauges is suitable for large-scale, high-precision stress and strain measurements. The torque testing circuit transmits the voltage changes of the offshore wind turbine tower under load to the data processing system. The data processing system identifies and eliminates abnormal measured torque data, reducing interference from abnormal data, and ultimately obtaining the true torque value of the offshore wind turbine tower after eliminating the influence of tensile and compressive deformation, bending deformation, and temperature changes. Simultaneously, the target torque data is sent to a remote monitoring platform, allowing for remote monitoring of the structure's torsional condition. By setting up multiple strain sensors, torsional strain data from multiple sections can be monitored simultaneously, determining the maximum torque value under various operating conditions within a certain time period. This allows for the identification of the section with the highest torque value, thereby strengthening the torsional resistance design of the weakest section with the highest torque and improving the structural stress performance.

[0066] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, and in order to make the above and other objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention are described below. Attached Figure Description

[0067] To more clearly illustrate the technical solution of the present invention, the accompanying drawings used in the description of the present invention will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0068] Figure 1 This is a flowchart of the steps of a method for testing the torque of a wind turbine tower provided in some embodiments of the present invention;

[0069] Figure 2 This is a schematic diagram of the layout of the wind turbine tower torque load measurement sensor provided in some embodiments of the present invention;

[0070] Figure 3 This is a schematic diagram of strain gauge circuit connections provided in some embodiments of the present invention;

[0071] Figure 4 This is a structural block diagram of a torque testing device for a wind turbine tower provided in some embodiments of the present invention.

[0072] Figure label:

[0073] 2-Wind turbine tower, 201-First strain gauge, 202-Second strain gauge, 203-Third strain gauge, 204-Fourth strain gauge, 301-First welding terminal, 302-Second welding terminal, 303-Third welding terminal. Detailed Implementation

[0074] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the various embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, those skilled in the art will understand that many technical details are presented in the various embodiments of the present invention to facilitate a better understanding of the invention. However, the technical solutions claimed in the present invention can be implemented even without these technical details and with various changes and modifications based on the following embodiments. The division of the various embodiments below is for ease of description and should not constitute any limitation on the specific implementation of the present invention. The various embodiments can be combined with and referenced by each other without contradiction.

[0075] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0076] Offshore wind turbine towers can transfer the load between the wind turbine foundation and the upper tower. The load generated by the wind turbine during operation is transferred to the tower, and then from the tower to the jacket foundation. Therefore, the actual load at the connection between the jacket and the tower is crucial for the design.

[0077] Reference Figure 1 The diagram illustrates a flowchart of a method for testing the torque of a wind turbine tower according to some embodiments of the present invention, which may specifically include the following steps:

[0078] Step 101: Obtain the voltage change value when the plurality of strain gauges of the strain sensor generate strain through the data processing system.

[0079] To measure the torque of the tower, some embodiments of the present invention include a torque testing system for measuring the torque of the offshore wind turbine tower. The torque testing system includes multiple sets of strain sensors and a data processing system. The multiple sets of strain sensors are set at different heights on the surface of the offshore wind turbine tower, and the data processing system is connected to the multiple sets of strain sensors. The multiple sets of strain sensors are equipped with a torque testing circuit. The torque testing circuit includes multiple strain gauges, a first welding terminal, a second welding terminal, and a third welding terminal. The multiple strain gauges are connected to the first welding terminal and the second welding terminal. The first welding terminal, the second welding terminal, and the third welding terminal are connected.

[0080] Specifically, when measuring the torque of an offshore wind turbine tower, it is necessary to select the measurement section of the offshore wind turbine tower structure. The tower section is annular, and strain sensors are symmetrically arranged on both sides of the tower.

[0081] The strain sensor is equipped with a torque testing circuit, which consists of strain gauges and welding terminals. Strain gauges are typically made of a very thin metal foil or conductive material and are adhered to the surface of the object to be measured. Welding terminals are electrical connection components used to fix wires or other conductive parts together by welding to achieve an electrical connection. When attaching the strain gauges, the inner wall of the tower is first ground until the silver steel body is exposed. The grinding area should be larger than the area of ​​the strain gauge. Then, a polishing machine is used to polish the steel surface to facilitate a tight fit of the strain gauge. According to the installation plan, the center point of the strain gauge is marked with a steel needle at the designated location. Based on the top markings around the strain gauge surface, auxiliary positioning lines are drawn for other positions. The area is cleaned with alcohol. Then, the strain gauges are glued to the inner wall of the tower one by one, and the welding terminals are attached, completing the installation process.

[0082] Furthermore, referring to Figure 2 The diagram illustrates the layout of wind turbine tower torque load measurement sensors according to some embodiments of the present invention. Figure 2 Only one set of sensors is shown. In practical applications, to obtain the weak cross-section of the wind turbine tower, multiple sets of sensors can be installed along the surface of the wind turbine tower from bottom to top, with each set of sensors corresponding to a measurement cross-section. The strain gauge may include a first strain gauge, a second strain gauge, a third strain gauge, and a fourth strain gauge. The first and second strain gauges are arranged on one side of the offshore wind turbine tower, and the third and fourth strain gauges are arranged on the side opposite to the first and second strain gauges.

[0083] The first and second strain gauges are grouped together, and the third and fourth strain gauges are grouped together. The strain gauges on each side are arranged in a V-shape. The axis of each group of strain gauges forms a 45-degree angle with the vertical direction of the wind turbine tower. The two groups of strain gauges are symmetrically arranged on both sides of the wind turbine tower, that is, the positions of the first and third strain gauges are symmetrical, and the positions of the second and third strain gauges are symmetrical.

[0084] It should be noted that since the maximum torsional shear stress of the annular cross-section of the offshore wind turbine tower occurs at various points around the cross-section, the strain gauge placement position is independent of the wind direction, and the strain sensor can be placed in any direction.

[0085] After the strain gauge is connected to the welding terminal to form a torque testing circuit, the welding terminal needs to be connected to the data processing system. When measuring the tower torque, the distance between the strain gauge and the acquisition system is usually large, meaning the wire connecting the strain gauge and the welding terminal will be long. Since the strain gauge itself is small, its resistance is smaller than the resistance of the wire connecting the strain gauge and the welding terminal. Therefore, the long wire will affect the measured resistance change of the strain gauge.

[0086] In some embodiments of the present invention, there may be multiple strain gauges, which can be divided into two groups. First, the two groups of strain gauges are connected to a first welding terminal and a second welding terminal, respectively, which are closer to the strain gauges. Then, the first and second welding terminals are connected to a third welding terminal, respectively. Because the strain gauges are close to the first and second welding terminals, and the connecting wires are short, the influence of wire resistance on the measurement results can be reduced.

[0087] Furthermore, referring to Figure 3 This diagram illustrates a circuit connection diagram of strain gauges according to some embodiments of the present invention. The plurality of strain gauges includes a first strain gauge, a second strain gauge, a third strain gauge, and a fourth strain gauge. Each strain gauge has a connector, and the strain gauges are connected to a first welding terminal and a second welding terminal via the connector. The connection method is as follows: the first connector of the first strain gauge is connected to a first welding point of the first welding terminal; the second connector of the first strain gauge is connected to a second welding point of the first welding terminal; the first connector of the second strain gauge is connected to a third welding point of the first welding terminal; the second connector of the second strain gauge is connected to a fourth welding point of the first welding terminal; the first connector of the third strain gauge is connected to a first welding point of the second welding terminal; the second connector of the third strain gauge is connected to a second welding point of the second welding terminal; the first connector of the fourth strain gauge is connected to a third welding point of the second welding terminal; and the second connector of the fourth strain gauge is connected to a fourth welding point of the second welding terminal.

[0088] To reduce the resistance effect of the long wires between the strain gauges and the welding terminals, the two sets of strain gauges can be connected to the first and second welding terminals, which are closer to the strain gauges, respectively. Each strain gauge has two terminals, and each terminal of the first and second strain gauges can be connected to the welding point of the first welding terminal one by one. Similarly, each terminal of the third and fourth strain gauges can be connected to the welding point of the second welding terminal one by one.

[0089] Furthermore, referring to Figure 3 The diagram illustrates a strain gauge circuit connection diagram provided in some embodiments of the present invention. The first welding terminal, the second welding terminal, and the third welding terminal are connected in the following manner: the first welding point of the first welding terminal and the first welding point of the second welding terminal are connected to the second welding point of the third welding terminal; the second welding point of the first welding terminal and the third welding point of the first welding terminal are connected to the first welding point of the third welding terminal; the fourth welding point of the first welding terminal and the fourth welding point of the second welding terminal are connected to the fourth welding point of the third welding terminal; and the second welding point of the second welding terminal and the third welding point of the second welding terminal are connected to the third welding point of the third welding terminal.

[0090] By connecting the first welding point of the first welding terminal to the first welding point of the second welding terminal, connecting the second welding point of the first welding terminal to the second welding point of the third welding terminal, connecting the second welding point of the first welding terminal to the third welding point of the third welding terminal, connecting the fourth welding point of the first welding terminal to the fourth welding point of the second welding terminal, and connecting the second welding point of the second welding terminal to the third welding point of the third welding terminal, a torque testing circuit is formed, which can eliminate the influence of temperature changes, tensile and compressive deformation, and bending deformation.

[0091] Specifically, first determine the direction of force at the test location. We can define tensile strain as positive and compressive strain as negative. Assuming the tower torque direction is clockwise, we determine that the first strain gauge is under tension and has a positive strain value, the second strain gauge is under compression and has a negative strain value, the third strain gauge is under compression and has a negative strain value, and the fourth strain gauge is under tension and has a positive strain value.

[0092] When the wind turbine tower is subjected to combined forces and temperature effects, the strains of the four strain gauges are as follows:

[0093] ε1=ε 扭 -ε 弯 +ε 拉 +ε t (1)

[0094] ε2=-ε扭 -ε 弯 +ε 拉 +ε t (2)

[0095] ε3=-ε 扭 +ε 弯 +ε 拉 +ε t (3)

[0096] ε4=ε 扭 +ε 弯 +ε 拉 +ε t (4)

[0097] Where ε1, ε2, ε3, and ε4 are the strains of the first, second, third, and fourth strain gauges, respectively, and ε 扭 ε 弯 ε 拉 ε t These are the strains caused by torsion, bending, tension, and temperature, respectively.

[0098] According to the torque testing circuit connection in this embodiment of the invention, the output voltage U0 can be expressed as:

[0099] U0=1 / [4*UK(ε1-ε2-ε3+ε4)]=1 / (4*UK*ε 扭 (5)

[0100] Where U is the power supply voltage and K is the bridge sensitivity coefficient.

[0101] As can be seen from formula (5), the output voltage is only related to the strain caused by torsion, while bending, tension, and temperature are all canceled out. Therefore, the test circuit in this embodiment of the invention can eliminate the effects of temperature changes, tensile and compressive deformation, and bending deformation, and obtain the true strain value.

[0102] After the strain sensor is arranged, it needs to be connected to the data processing system. In this embodiment, the first welding point of the third welding terminal is connected to the positive excitation voltage and the positive induction lead of the data processing system via two wires, respectively; the second welding point of the third welding terminal is connected to the positive signal of the data processing system via one wire; the third welding point of the third welding terminal is connected to the negative excitation voltage and the negative induction lead of the data processing system via two wires, respectively; and the fourth welding point of the third welding terminal is connected to the negative signal of the data processing system via one wire. This can compensate for changes in wire resistance, ensuring that the excitation voltage of the bridge is not affected by the wire resistance, thereby improving the measurement accuracy, reducing signal drift caused by changes in wire resistance, improving signal stability and repeatability, and providing higher measurement precision.

[0103] Strain sensors transmit signals from the deformation of the offshore wind turbine tower under stress to a data processing system. The data processing system then acquires the voltage change values ​​of the strain gauges as they transmit strain. When the offshore wind turbine tower is subjected to load, the strain gauges will strain accordingly. This strain causes a voltage change in the strain sensor, which the acquisition system can then collect.

[0104] Furthermore, in some embodiments of the present invention, step 101 further includes the following sub-steps:

[0105] Sub-step 11: The data processing system sets the sampling frequency and acquires the strain signal of the strain sensor according to the sampling frequency.

[0106] Since strain sensors need to monitor strain signals over a long period of time to dynamically acquire strain data, a sampling frequency is set for strain acquisition. This allows for the periodic acquisition of strain signals from the strain sensor to obtain multiple sets of data and monitor strain data in real time.

[0107] Step 102: Obtain the resistance change value of the multiple strain gauges based on the voltage change value of the multiple strain gauges.

[0108] When a strain gauge is subjected to an external load, its structure undergoes minute deformation, known as strain. This deformation causes changes in the size and shape of the resistance wire or conductive material inside the strain gauge, resulting in a change in its resistance value. The data processing system can indirectly monitor the resistance change of the strain gauge by detecting the voltage change at the output of a bridge circuit. When the strain gauge resistance changes, the balance of the bridge is disrupted, creating a voltage difference on the diagonal of the bridge. This voltage difference is proportional to the resistance change of the strain gauge. By measuring this voltage difference and combining it with the circuit parameters of the bridge, the resistance change of the strain gauge can be calculated.

[0109] It should be noted that in this embodiment of the invention, the output voltage is four times that of the single-arm bridge, which can adapt to a wide range of high-precision stress and strain measurements.

[0110] Step 103: Based on the resistance change values ​​of the plurality of strain gauges and the sensitivity coefficients of the plurality of strain gauges, obtain the target measured strain values ​​of the plurality of strain gauges.

[0111] The resistance change value of each strain gauge is acquired through a data processing system. Each strain gauge has a specific sensitivity coefficient, which describes the relationship between the strain gauge's resistance change and strain. The sensitivity coefficient is a constant. Based on the strain gauge's resistance change value and its corresponding sensitivity coefficient, the target measured strain value of the strain gauge can be calculated. The calculation formula is typically as follows:

[0112] Strain value = Resistance change / (Sensitivity coefficient * Initial resistance value) (6)

[0113] The resistance change value is the actual change in the resistance of the strain gauge, and the initial resistance value is the resistance value of the strain gauge when it is not subjected to strain.

[0114] Step 104: Calculate the measured torque of the offshore wind turbine tower based on the target measured strain values ​​of the multiple strain gauges and the parameters of the offshore wind turbine tower.

[0115] The target strain value obtained from the strain gauge can be combined with the parameters of the offshore wind turbine tower to calculate the torque value of the offshore wind turbine tower.

[0116] In some embodiments of the present invention, step 104 further includes:

[0117] Sub-step 22: The formula for calculating the torque of the offshore wind turbine tower is as follows:

[0118] T=W·τ (7)

[0119] τ=G·γ(8)

[0120]

[0121] γ=2ε(10)

[0122]

[0123] Wherein, T is the measured torque of the offshore wind turbine tower; W is the torsional section modulus of the offshore wind turbine tower; τ is the cross-sectional shear stress of the offshore wind turbine tower; G is the shear modulus of the offshore wind turbine tower; γ is the shear strain of the offshore wind turbine tower; υ is the Poisson's ratio of the material of the offshore wind turbine tower; ε is the torsional strain; E is the elastic modulus of the offshore wind turbine tower; A is the bridge arm coefficient of the circuit; ε 测 The measured strain values ​​of the plurality of strain gauges.

[0124] In some embodiments of the present invention, sub-step 22 further includes the following sub-steps:

[0125] Sub-step 221: Measure the original measured strain value and initial strain value of the plurality of strain gauges;

[0126] The target measured strain value is calculated based on the original and initial strain values ​​of the multiple strain gauges, using the following formula:

[0127] ε 测 =ε′ 测 -ε0(12)

[0128] Where, ε′ 测 ε0 represents the original measured strain value of the plurality of strain gauges; ε0 represents the initial strain value of the plurality of strain gauges.

[0129] The original measured strain value is the strain value obtained through direct measurement. This original measured strain value includes the initial strain value, which refers to the inherent strain within the structure caused by prestress, temperature changes, manufacturing processes, or other factors when no external load is applied. In strain measurement, the initial strain value is an important reference point, helping to distinguish between strain caused by external loads and strain caused by other factors. To obtain the true strain value, the influence of the initial strain needs to be considered.

[0130] In this embodiment of the invention, the initial strain value of the plurality of strain gauges is the average absolute value of the strain measured within a preset time period when the average wind speed is within a preset wind speed range.

[0131] Strain measurements can be taken at a time when the wind speed is low, such as when the wind speed is less than 3 m / s. The strain value can be measured within 1 minute, and the average strain value can be calculated. Since torsional strain has two directions, the average value of the absolute strain value can be used for calculation.

[0132] In some embodiments of the present invention, step 104 further includes:

[0133] Sub-step 23: Obtain the parameters of the offshore wind turbine tower through the data processing system.

[0134] When calculating the torque of an offshore wind turbine tower, it is necessary to consider the parameters of the offshore wind turbine tower. Therefore, the data processing system can obtain the parameters of the offshore wind turbine tower.

[0135] Furthermore, the data processing system is equipped with a torque calculation module, which is used to calculate the torque of the offshore wind turbine tower.

[0136] A torque calculation module can be configured in the data processing system. The torque calculation module can obtain the target measured strain value and the parameters of the offshore wind turbine tower, and pre-set the relevant calculation formulas.

[0137] Furthermore, the torque calculation module calculates the torque of the offshore wind turbine tower based on the measured strain value and the parameters of the offshore wind turbine tower.

[0138] By substituting the target measured strain value obtained by the data processing system and the parameters of the offshore wind turbine tower into the pre-set calculation formula, the torque value is automatically calculated, which can calculate the torque value in real time when monitoring the torque of the offshore wind turbine tower.

[0139] It should be noted that the torque calculation module can calculate the result of each sample based on the set sampling frequency, or it can sample at intervals. The calculation results can be stored and a statistical table can be generated. A torque value threshold can also be preset. When the calculated torque value exceeds the preset torque threshold, an alarm message is generated. The alarm message can be sent to the communication terminal to alert the business personnel that the torque of the offshore wind turbine tower is too high, so that the business personnel can take countermeasures.

[0140] In this embodiment of the invention, an offshore wind turbine tower is equipped with a torque testing system. The torque testing system includes a strain sensor and a data processing system. The strain sensor is disposed on the surface of the offshore wind turbine tower, and the data processing system is connected to the strain sensor. The strain sensor is equipped with a torque testing circuit, which includes multiple strain gauges, a first welding terminal, a second welding terminal, and a third welding terminal. The multiple strain gauges are connected to the first welding terminal and the second welding terminal, and the first welding terminal, the second welding terminal, and the third welding terminal are connected. The data processing system acquires the voltage change values ​​of the multiple strain gauges when strain occurs. Based on the voltage change values ​​of the multiple strain gauges, the resistance change values ​​of the multiple strain gauges are obtained. Based on the resistance change values ​​and the sensitivity coefficients of the multiple strain gauges, the strain values ​​of the multiple strain gauges are obtained. The torque of the offshore wind turbine tower is calculated based on the strain values ​​of the multiple strain gauges. The torque testing circuit can increase the output voltage by four times, eliminate the effects of tensile and compressive deformation and bending deformation, obtain accurate torsional strain of the tower structure, and form a temperature compensation effect between strain gauges, avoiding the additional influence of ambient temperature changes on the test results of the strain gauges themselves. Furthermore, the torque testing circuit composed of multiple strain gauges is suitable for large-scale, high-precision stress and strain measurements. The torque testing circuit transmits the voltage changes of the offshore wind turbine tower under load to the data processing system, ultimately obtaining the true torque value of the offshore wind turbine tower, eliminating the effects of tensile and compressive deformation, bending deformation, and temperature changes.

[0141] Step 105: Identify and exclude abnormal measured torque data through the data processing system to obtain the target torque data.

[0142] Under normal circumstances, the measured torque data can form a smooth curve when statistically analyzed. However, due to equipment instability, human factors, and other reasons, some abrupt changes may occur, which can interfere with the torque measurement results. Therefore, it is necessary to exclude these abnormal measured torque data. The data processing system can identify and exclude abnormal measured torque data to obtain the target torque data.

[0143] Step 106: Send the target torque data to the remote monitoring platform.

[0144] To facilitate torque data monitoring, target torque data can be sent to a remote monitoring platform or a mobile device via a data processing system, allowing staff to monitor the torsional condition of the wind turbine tower in real time. A remote monitoring platform is a technological system that allows users to monitor and manage remote equipment, systems, or processes in real time via a network.

[0145] In some embodiments of this application, the remote monitoring platform can collect and display data from remote devices in real time, provide data analysis tools to help users understand the device's operating status and performance, send alarms and notifications when anomalies or preset conditions are detected, store historical data for subsequent analysis and auditing, provide a user-friendly interface for easy operation and management, and improve efficiency, reduce costs, and enhance control over remote devices and processes. It should be noted that a preset torque limit value can be established; when the monitored torque value exceeds the preset torque limit value, the remote monitoring platform can issue a warning to prompt staff to take appropriate measures.

[0146] Step 107: Based on the target torque data under various working conditions obtained by the remote monitoring platform within the first preset time period, determine the maximum torque value measured by each group of strain sensors within the first preset time period.

[0147] Multiple strain sensors are installed from top to bottom on the surface of the offshore wind turbine tower. These sensors can operate continuously. When measuring torque, a preset time period can be used, which can include various extreme conditions such as typhoons, waves, and wind turbine operation. Within the preset time period, the maximum target torque value measured by each sensor is determined as the maximum torque value. The maximum torque value reflects the maximum torque force experienced by each section under extreme conditions, that is, the most unfavorable torsional condition for each section of the wind turbine.

[0148] Step 108: Based on the maximum torque value measured by each group of strain sensors within a first preset time period, determine the target maximum torque value of the offshore wind turbine tower within the first preset time period.

[0149] Within a preset time period, the maximum torque value measured by each set of strain sensors was obtained. The largest value among all maximum torque values ​​can be determined as the target maximum torque value. The cross-section where the strain sensor corresponding to the target maximum torque value is located can be considered as the weakest section of the wind turbine tower, where the torsion is greatest, and it can be reinforced in the design.

[0150] In this embodiment of the invention, the torque testing circuit eliminates the influence of tensile and compressive deformation and bending deformation, obtaining accurate torsional strain of the tower structure. It also creates a temperature compensation effect between strain gauges, avoiding the additional influence of ambient temperature changes on the test results of the strain gauges themselves. The torque testing circuit composed of multiple strain gauges is suitable for large-scale, high-precision stress and strain measurements. The torque testing circuit transmits the voltage changes of the offshore wind turbine tower under load to the data processing system. The data processing system identifies and eliminates abnormal measured torque data, reducing interference from abnormal data, and ultimately obtaining the true torque value of the offshore wind turbine tower after eliminating the influence of tensile and compressive deformation, bending deformation, and temperature changes. Simultaneously, the target torque data is sent to a remote monitoring platform, allowing for remote monitoring of the structure's torsional condition. By setting up multiple strain sensors, torsional strain data from multiple sections can be monitored simultaneously, determining the maximum torque value under various operating conditions within a certain time period. This allows for the identification of the section with the highest torque value, thereby strengthening the torsional resistance design of the weakest section with the highest torque and improving the structural stress performance.

[0151] Reference Figure 4 This diagram illustrates a structural schematic of a torque testing device for a wind turbine tower according to some embodiments of the present invention. The torque testing method is applied to an offshore wind turbine tower. The offshore wind turbine tower is equipped with a torque testing system, which includes a strain sensor and a data processing system. The strain sensor is disposed on the inner surface of the offshore wind turbine tower, and the data processing system is connected to the strain sensor. The strain sensor is equipped with a torque testing circuit. The torque testing circuit includes multiple strain gauges, a first welding terminal, a second welding terminal, and a third welding terminal. The multiple strain gauges are connected to the first welding terminal and the second welding terminal. The first welding terminal, the second welding terminal, and the third welding terminal are connected. Specifically, it may include the following modules:

[0152] The signal acquisition module 401 is used to acquire the voltage change value when the plurality of strain gauges of the strain sensor generate strain through the data processing system;

[0153] The resistance change value calculation module 402 is used to obtain the resistance change value of the multiple strain gauges based on the voltage change value of the multiple strain gauges;

[0154] The strain value calculation module 403 is used to obtain the target measured strain value of the plurality of strain gauges based on the resistance change value of the plurality of strain gauges and the sensitivity coefficient of the plurality of strain gauges.

[0155] The torque measurement calculation module 404 is used to calculate the torque of the offshore wind turbine tower based on the target measured strain values ​​of the multiple strain gauges and the parameters of the offshore wind turbine tower.

[0156] The target torque acquisition module 405 is used to identify and exclude abnormal torque data through the data processing system to obtain target torque data.

[0157] The target torque data transmission module 406 is used to transmit the target torque data to the remote monitoring platform.

[0158] Maximum torque value determination module 407 is used to determine the maximum torque value measured by each group of strain sensors within the first preset time period based on the target torque data under various working conditions obtained by the remote monitoring platform within the first preset time period.

[0159] The target maximum torque value determination module 408 is used to determine the target maximum torque value of the offshore wind turbine tower within the first preset time period based on the maximum torque value measured by each group of strain sensors within the first preset time period.

[0160] In an optional embodiment of the present invention, the signal acquisition module 401 includes:

[0161] The sampling frequency setting submodule is used to set the sampling frequency and acquire the strain signal of the strain sensor according to the sampling frequency;

[0162] The tower parameter acquisition submodule is used to acquire the parameters of the offshore wind turbine tower through the data processing system.

[0163] In an optional embodiment of the present invention, the torque calculation module 404 includes:

[0164] The target strain value calculation submodule is used to measure the original and initial strain values ​​of the multiple strain gauges; and to calculate the target strain value based on the original and initial strain values ​​of the multiple strain gauges, using the formula: ε 测 =ε′ 测 -ε0, where ε′ 测 ε0 represents the original measured strain value of the plurality of strain gauges; ε0 represents the initial strain value of the plurality of strain gauges.

[0165] In this embodiment of the invention, the torque testing circuit eliminates the influence of tensile and compressive deformation and bending deformation, obtaining accurate torsional strain of the tower structure. It also creates a temperature compensation effect between strain gauges, avoiding the additional influence of ambient temperature changes on the test results of the strain gauges themselves. The torque testing circuit composed of multiple strain gauges is suitable for large-scale, high-precision stress and strain measurements. The torque testing circuit transmits the voltage changes of the offshore wind turbine tower under load to the data processing system. The data processing system identifies and eliminates abnormal measured torque data, reducing interference from abnormal data, and ultimately obtaining the true torque value of the offshore wind turbine tower after eliminating the influence of tensile and compressive deformation, bending deformation, and temperature changes. Simultaneously, the target torque data is sent to a remote monitoring platform, allowing for remote monitoring of the structure's torsional condition. By setting up multiple strain sensors, torsional strain data from multiple sections can be monitored simultaneously, determining the maximum torque value under various operating conditions within a certain time period. This allows for the identification of the section with the highest torque value, thereby strengthening the torsional resistance design of the weakest section with the highest torque and improving the structural stress performance.

[0166] Some embodiments of the present invention also provide an electronic device, which may include a processor, a memory, and a computer program stored in the memory and capable of running on the processor. When the computer program is executed by the processor, it implements the torque testing method for the wind turbine tower as described above.

[0167] Some embodiments of the present invention also provide a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the torque testing method for the wind turbine tower described above.

[0168] Some embodiments of the present invention also provide a computer program product, including a computer program that, when executed by a processor, implements the torque testing method for the wind turbine tower described above.

[0169] As the device embodiment is basically similar to the method embodiment, the description is relatively simple, and relevant parts can be found in the description of the method embodiment.

[0170] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, data stored, data displayed, etc.) involved in this invention are all information and data authorized by the user or fully authorized by all parties. Furthermore, the collection, use and processing of related data must comply with the relevant laws, regulations and standards of the relevant countries and regions, and corresponding operation entry points are provided for users to choose to authorize or refuse.

[0171] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0172] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, apparatus, or computer program products. Therefore, embodiments of the present invention can take the form of entirely hardware embodiments, entirely software embodiments, or embodiments combining software and hardware aspects. Furthermore, embodiments of the present invention can take the form of computer program products implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0173] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, terminal devices (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing terminal device to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing terminal device, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0174] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing terminal device to operate in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0175] These computer program instructions can also be loaded onto a computer or other programmable data processing terminal equipment, causing a series of operational steps to be performed on the computer or other programmable terminal equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable terminal equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0176] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the embodiments of the present invention.

[0177] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes the aforementioned element.

[0178] The above provides a detailed description of the torque testing method, device, equipment, and medium for wind turbine towers. Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. At the same time, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A method for testing the torque of a wind turbine tower, characterized in that, An application is made to offshore wind turbine towers, wherein the offshore wind turbine tower is equipped with a torque testing system. The torque testing system includes multiple sets of strain sensors and a data processing system. The multiple sets of strain sensors are positioned at different heights on the surface of the offshore wind turbine tower, and the data processing system is connected to the multiple sets of strain sensors. The multiple sets of strain sensors are equipped with a torque testing circuit. The torque testing circuit includes multiple strain gauges, a first welding terminal, a second welding terminal, and a third welding terminal. The multiple strain gauges are connected to the first welding terminal and the second welding terminal; the first welding terminal, the second welding terminal, and the third welding terminal are connected. The method includes: The data processing system acquires the voltage change values ​​of the plurality of strain gauges of the strain sensor when strain is generated; The resistance change value of the multiple strain gauges is obtained based on the voltage change value of the multiple strain gauges; Based on the resistance change values ​​of the plurality of strain gauges and the sensitivity coefficients of the plurality of strain gauges, the target measured strain values ​​of the plurality of strain gauges are obtained; The measured torque of the offshore wind turbine tower is calculated based on the target measured strain values ​​of the multiple strain gauges and the parameters of the offshore wind turbine tower. The data processing system identifies and eliminates abnormal measured torque data to obtain the target torque data. The target torque data is sent to the remote monitoring platform; Based on the target torque data under various working conditions obtained by the remote monitoring platform within a first preset time period, the maximum torque value measured by each group of strain sensors within the first preset time period is determined. Based on the maximum torque value measured by each set of strain sensors within a first preset time period, the target maximum torque value of the offshore wind turbine tower within the first preset time period is determined.

2. The torque testing method according to claim 1, characterized in that, The plurality of strain gauges includes a first strain gauge, a second strain gauge, a third strain gauge, and a fourth strain gauge; the plurality of strain gauges have connectors, and the plurality of strain gauges are connected to the first welding terminal and the second welding terminal through the connectors, wherein the connection method is as follows: The first connector of the first strain gauge is connected to the first welding point of the first welding terminal; The second terminal of the first strain gauge is connected to the second welding point of the first welding terminal; The first terminal of the second strain gauge is connected to the third welding point of the first welding terminal; The second connector of the second strain gauge is connected to the fourth welding point of the first welding terminal; The first connector of the third strain gauge is connected to the first welding point of the second welding terminal; The second connector of the third strain gauge is connected to the second welding point of the second welding terminal; The first terminal of the fourth strain gauge is connected to the third welding point of the second welding terminal; The second terminal of the fourth strain gauge is connected to the fourth welding point of the second welding terminal.

3. The torque testing method according to claim 1, characterized in that, The first welding terminal, the second welding terminal, and the third welding terminal are connected in the following manner: The first welding point of the first welding terminal and the first welding point of the second welding terminal are connected to the second welding point of the third welding terminal; The second welding point of the first welding terminal and the third welding point of the first welding terminal are connected to the first welding point of the third welding terminal; The fourth welding point of the first welding terminal and the fourth welding point of the second welding terminal are connected to the fourth welding point of the third welding terminal; The second welding point of the second welding terminal is connected to the third welding point of the third welding terminal.

4. The torque testing method according to claim 3, characterized in that, The data processing system is connected to the strain sensor and includes: The first welding point of the third welding terminal is connected to the excitation voltage positive and the induction lead positive of the data processing system via two wires, respectively. The second welding point of the third welding terminal is positively connected to the signal of the data processing system via a wire; The third welding point of the third welding terminal is connected to the negative excitation voltage and the negative induction lead of the data processing system via two wires, respectively. The fourth welding point of the third welding terminal is connected to the signal negative connection of the data processing system via a wire.

5. The torque testing method according to claim 1, characterized in that, The plurality of strain gauges includes a first strain gauge, a second strain gauge, a third strain gauge, and a fourth strain gauge; the first strain gauge and the second strain gauge are arranged on one side of the offshore wind turbine tower, and the third strain gauge and the fourth strain gauge are arranged on the side opposite to the first strain gauge and the second strain gauge.

6. The torque testing method according to claim 1, characterized in that, The data processing system sets a sampling frequency and acquires the strain signal from the strain sensor based on the sampling frequency.

7. The torque testing method according to claim 1, characterized in that, The formula for calculating the torque of the offshore wind turbine tower is as follows: T = W·τ, τ=G·γ, γ=2ε, Wherein, T is the measured torque of the offshore wind turbine tower; W is the torsional section modulus of the offshore wind turbine tower; τ is the cross-sectional shear stress of the offshore wind turbine tower; G is the shear modulus of the offshore wind turbine tower; γ is the shear strain of the offshore wind turbine tower; υ is the Poisson's ratio of the material of the offshore wind turbine tower; ε is the torsional strain; E is the elastic modulus of the offshore wind turbine tower; A is the bridge arm coefficient of the circuit; ε 测 The target strain values ​​are measured for the plurality of strain gauges.

8. The torque testing method according to claim 7, characterized in that, The method further includes: Measure the original and initial strain values ​​of the multiple strain gauges; The target measured strain value is calculated based on the original and initial strain values ​​of the multiple strain gauges, using the following formula: e 测 =e′ 测 -ε0, Where, ε′ 测 ε0 represents the original measured strain value of the plurality of strain gauges; ε0 represents the initial strain value of the plurality of strain gauges.

9. The torque testing method according to claim 8, characterized in that, The initial strain values ​​of the multiple strain gauges are the average absolute values ​​of the strain measured over a second preset time period when the average wind speed is within a preset wind speed range.

10. The torque testing method according to claim 1, characterized in that, The method further includes: The parameters of the offshore wind turbine tower are obtained through a data processing system.

11. The torque testing method according to claim 10, characterized in that, The data processing system is equipped with a torque calculation module, which is used to calculate the torque of the offshore wind turbine tower.

12. The torque testing method according to claim 11, characterized in that, The calculation of the torque of the offshore wind turbine tower based on the target measured strain values ​​of the multiple strain gauges and the parameters of the offshore wind turbine tower includes: The torque calculation module calculates the torque of the offshore wind turbine tower based on the measured strain value and the parameters of the offshore wind turbine tower.

13. A torque testing device for a wind turbine tower, characterized in that, An application is made to offshore wind turbine towers, wherein the offshore wind turbine tower is equipped with a torque testing system. The torque testing system includes multiple sets of strain sensors and a data processing system. The multiple sets of strain sensors are positioned at different heights on the surface of the offshore wind turbine tower, and the data processing system is connected to the multiple sets of strain sensors. The multiple sets of strain sensors are equipped with a torque testing circuit. The torque testing circuit includes multiple strain gauges, a first welding terminal, a second welding terminal, and a third welding terminal. The multiple strain gauges are connected to the first welding terminal and the second welding terminal; the first welding terminal, the second welding terminal, and the third welding terminal are connected. The device includes: The signal acquisition module is used to acquire the voltage change values ​​of the plurality of strain gauges of the strain sensor when strain is generated through the data processing system; The resistance change value calculation module is used to obtain the resistance change value of the multiple strain gauges based on the voltage change value of the multiple strain gauges; The strain value calculation module is used to obtain the strain value of the multiple strain gauges based on the resistance change value of the multiple strain gauges and the sensitivity coefficient of the multiple strain gauges; The torque measurement calculation module is used to calculate the measured torque of the offshore wind turbine tower based on the strain values ​​of the multiple strain gauges. The target torque acquisition module is used to identify and exclude abnormal torque data through the data processing system to obtain target torque data. The target torque data transmission module is used to transmit the target torque data to the remote monitoring platform; The maximum torque value determination module is used to determine the maximum torque value measured by each group of strain sensors within the first preset time period based on the target torque data under various working conditions obtained by the remote monitoring platform within the first preset time period. The target maximum torque value determination module is used to determine the target maximum torque value of the offshore wind turbine tower within the first preset time period based on the maximum torque value measured by each group of strain sensors within the first preset time period.

14. An electronic device, characterized in that, The method includes a processor, a memory, and a computer program stored in the memory and capable of running on the processor, wherein the computer program, when executed by the processor, implements the torque testing method for the wind turbine tower as described in any one of claims 1 to 12.

15. A computer-readable storage medium, characterized in that, A computer program is stored on the computer-readable storage medium, which, when executed by a processor, implements the torque testing method for the wind turbine tower as described in any one of claims 1 to 12.

Images