A vibration control method and system for a transmission tower-line coupling system

Abstract

The present invention discloses a vibration control method and system for a transmission tower-line coupling system, comprising: analyzing the material nonlinear characteristics and geometric nonlinear characteristics of the transmission tower-line coupling system based on the structural parameters of the transmission tower-line coupling system to obtain first nonlinear vibration response data of the transmission tower-line coupling system; obtaining first element data corresponding to multiple vibration-inducing elements of the transmission tower-line coupling system in real time; inputting all first element data and first nonlinear vibration response data into a decision model so that the decision model outputs a corresponding first coupling parameter combination, and controlling and adjusting multiple coupling parameters of the transmission tower-line coupling system according to the first coupling parameter combination. The present invention takes into account the influence of the structural material nonlinearity of the transmission tower-line coupling system and the geometric nonlinearity caused by the tower-line coupling, analyzes the nonlinear characteristics of the transmission tower-line coupling system, and adjusts the coupling parameters of the transmission tower-line coupling system based on the analysis results to suppress the nonlinear vibration of the structure.

Description

Technical Field

[0001] The present invention relates to the field of design optimization of transmission tower-line coupling systems, and in particular to a vibration control method and system for a transmission tower-line coupling system. Background Art

[0002] With the continuous growth of the national economy, the demand for electricity from residents and businesses is increasing. The level of power supply directly affects people's quality of life and the prospects for socioeconomic development. Therefore, as a key driving force for social economy and life, the power supply system plays a vital role in production and daily life. In complex terrain environments, the operational stability of the power supply system is currently a key research topic.

[0003] In practical applications, transmission tower-line coupling systems are often deployed in power supply systems for the transmission and distribution of electricity. These systems primarily consist of transmission towers, transmission lines, and insulators. To ensure the safe and stable operation of the power supply system, vibration control of the tower-line coupling system is typically performed. However, existing technologies primarily consider the linear vibration of the tower-line coupling system and only study the impact of wind load characteristics on the tower's inherent vibration characteristics and stability, without considering the effects of structural material nonlinearity and the geometric nonlinearity of the tower-line coupling system. Consequently, current approaches to strengthening the tower-line coupling system include increasing the cross-section of structural components and employing higher-performance materials, to mitigate the impact of wind load characteristics on the overall system stability to a certain extent. However, complex nonlinear vibrations occur within the tower-line coupling system due to the coupling. The nonlinear characteristics of the tower-line coupling structure result in strong nonlinear vibration characteristics, manifested in amplitude-frequency dependence, coexistence of multiple stable states, bifurcation, and chaos. These nonlinear characteristics pose a threat to the safe and stable operation of the transmission tower-line coupling system. Due to the coupling, energy is continuously exchanged between the transmission towers and lines, making nonlinear vibration behavior more complex and variable, making conventional linear vibration control methods ineffective. Furthermore, improper setting of coupling parameters can exacerbate nonlinear vibration, thereby reducing control effectiveness. Therefore, rigid reinforcement measures such as increasing the cross-section of structural components and using higher-performance materials are inadequate to mitigate the negative impact of nonlinear vibration on the operational stability of the transmission system. Summary of the Invention

[0004] Embodiments of the present invention provide a transmission tower-line coupling system vibration control method and system, which analyze the material nonlinear characteristics and geometric nonlinear characteristics of the transmission tower-line coupling system and adjust the coupling parameters of the transmission tower-line coupling system based on the analysis results to suppress the nonlinear vibration of the transmission tower-line coupling system.

[0005] In order to solve the above technical problems, an embodiment of the present invention provides a method for controlling vibration of a transmission tower-line coupling system, comprising:

[0006] Analyzing the material nonlinear characteristics and geometric nonlinear characteristics of the transmission tower-line coupling system based on the structural parameters of the transmission tower-line coupling system to obtain first nonlinear vibration response data of the transmission tower-line coupling system;

[0007] Acquiring first element data corresponding to a plurality of vibration-inducing elements of the transmission tower-line coupling system in real time;

[0008] Inputting all of the first factor data and the first nonlinear vibration response data into a decision model so that the decision model outputs a corresponding first coupling parameter combination, and controlling and adjusting a plurality of coupling parameters of the transmission tower-line coupling system according to the first coupling parameter combination to achieve vibration control of the transmission tower-line coupling system;

[0009] The decision model is obtained by training a support vector machine or a convolutional neural network using a sample database, wherein the sample database includes multiple second coupling parameter combinations, multiple second vibration element combinations, and second nonlinear vibration response data generated by the transmission tower-line coupling system under the action of each second coupling parameter combination and each second vibration element combination, and the second vibration element combination includes second element data corresponding to several vibration elements.

[0010] In implementing the embodiment of the present invention, taking into account the structural material nonlinearity of the transmission tower-line coupling system and the geometric nonlinearity caused by the tower-line coupling, based on the structural parameters of the transmission tower-line coupling system, the material nonlinear characteristics and geometric nonlinear characteristics of the transmission tower-line coupling system are analyzed to obtain first nonlinear vibration response data of the transmission tower-line coupling system, and first element data corresponding to several vibration-inducing elements of the transmission tower-line coupling system are obtained in real time. Then, all the first element data and the first nonlinear vibration response data are input into a pre-trained decision model so that the decision model outputs a corresponding first coupling parameter combination. According to the first coupling parameter combination, several coupling parameters of the transmission tower-line coupling system are controlled and adjusted. This can suppress the nonlinear vibration of the transmission tower-line coupling system to a certain extent, thereby improving the operational stability and safety of the transmission tower-line coupling system and the transmission system. In addition, a sample database including multiple second coupling parameter combinations, multiple second vibration element combinations, and second nonlinear vibration response data generated by the transmission tower-line coupling system under the action of each second coupling parameter combination and each second vibration element combination is used to train a support vector machine or a convolutional neural network to obtain a decision model, so that the decision model learns the mapping relationship between the coupling parameter combination and the vibration element combination and the nonlinear vibration response data of the transmission tower-line coupling system, so as to respond to changes in the first element data corresponding to the multiple vibration elements of the transmission tower-line coupling system and the first nonlinear vibration response data of the transmission tower-line coupling system, and accurately determine the decision to adjust the multiple coupling parameters of the transmission tower-line coupling system in real time, thereby realizing real-time suppression of the vibration of the transmission tower-line coupling system.

[0011] As a preferred solution, based on the structural parameters of the transmission tower-line coupling system, the material nonlinear characteristics and geometric nonlinear characteristics of the transmission tower-line coupling system are analyzed to obtain the first nonlinear vibration response data of the transmission tower-line coupling system, specifically:

[0012] Based on the structural parameters of the transmission tower-line coupling system, the material nonlinear characteristics and geometric nonlinear characteristics of the transmission tower-line coupling system are analyzed to obtain the nonlinear vibration characteristics of the transmission tower-line coupling system. The nonlinear vibration characteristics are then discretized to obtain a nonlinear vibration control equation containing nonlinear terms.

[0013] The nonlinear vibration control equation containing the nonlinear term is solved by time domain integration to obtain first nonlinear vibration response data of the transmission tower-line coupling system.

[0014] In a preferred embodiment of the present invention, the nonlinear vibration characteristics of the transmission tower-line coupling system are first discretized to obtain a nonlinear vibration control equation containing nonlinear terms. This is then solved by performing time-domain integration on the nonlinear vibration control equation containing nonlinear terms, thereby extracting first nonlinear vibration response data of the transmission tower-line coupling system from the nonlinear vibration characteristics of the transmission tower-line coupling system. This helps to accurately predict the nonlinear vibration response of the current transmission tower-line coupling system structure in actual operation.

[0015] As a preferred solution, based on the structural parameters of the transmission tower-line coupling system, the material nonlinear characteristics and geometric nonlinear characteristics of the transmission tower-line coupling system are analyzed to obtain the nonlinear vibration characteristics of the transmission tower-line coupling system. Then, the nonlinear vibration characteristics are discretized to obtain a nonlinear vibration control equation containing nonlinear terms, which is specifically:

[0016] Based on the structural parameters of the transmission tower-line coupling system, the material nonlinear characteristics and geometric nonlinear characteristics of the transmission tower-line coupling system are analyzed to obtain the nonlinear vibration characteristics of the transmission tower-line coupling system;

[0017] Based on the nonlinear vibration characteristics, a nonlinear vibration model is established;

[0018] The nonlinear vibration model is discretized by using a finite element method to obtain a nonlinear vibration control equation containing nonlinear terms.

[0019] By implementing the preferred solution of the embodiment of the present invention, a nonlinear vibration model established based on nonlinear vibration characteristics can capture the influence of nonlinear terms on the dynamic response of the structure, which is helpful for in-depth research and prediction of the vibration performance of the structure, and further more realistically reflects the vibration behavior of the transmission tower-line coupling system.

[0020] As a preferred solution, based on the structural parameters of the transmission tower-line coupling system, the material nonlinear characteristics and geometric nonlinear characteristics of the transmission tower-line coupling system are analyzed to obtain the nonlinear vibration characteristics of the transmission tower-line coupling system. Then, the nonlinear vibration characteristics are discretized to obtain a nonlinear vibration control equation containing nonlinear terms, which is specifically:

[0021] spatially discretizing the structural parameters of the transmission tower-line coupling system to obtain a first rigid body matrix and a first mass matrix of the transmission tower-line coupling system;

[0022] Performing a linear combination of the first rigid body matrix and the first mass matrix to obtain a first damping matrix of the transmission tower-line coupling system;

[0023] Using the first damping matrix, time-discretize the first rigid body matrix and the first mass matrix to obtain a second rigid body matrix and a second mass matrix;

[0024] Based on the first damping matrix, the second rigid body matrix, the second mass matrix and the load vector, a nonlinear vibration control equation containing nonlinear terms is constructed; wherein the load vector is calculated based on the external load and combined with a preset motion control method.

[0025] In a preferred embodiment of the present invention, the structural parameters of the transmission tower-line coupling system are spatially discretized to obtain a first rigid body matrix and a first mass matrix of the transmission tower-line coupling system. The first rigid body matrix and the first mass matrix are then linearly combined to obtain a first damping matrix of the transmission tower-line coupling system. This can more accurately describe the damping characteristics of the transmission tower-line coupling system. Damping plays a key role in vibration control, and accurately describing damping helps improve the accuracy of vibration response analysis. The first damping matrix is ​​then used to time-discrete the first rigid body matrix and the first mass matrix to obtain a second rigid body matrix and a second mass matrix. This enables dynamic analysis to be performed in the time domain, thereby more accurately simulating the vibration state of the transmission tower-line coupling system at different time points. In addition, based on the external load and in combination with a preset motion control method, a load vector is calculated. Then, a nonlinear vibration control equation is constructed based on the first damping matrix, the second rigid body matrix, the second mass matrix, and the load vector. This comprehensively considers the structural characteristics of the transmission tower-line coupling system and the influence of the external load, so that the nonlinear vibration control equation can fully reflect the nonlinear vibration characteristics of the transmission tower-line coupling system.

[0026] As a preferred solution, all the first factor data and the first nonlinear vibration response data are input into a decision model so that the decision model outputs a corresponding first coupling parameter combination, and according to the first coupling parameter combination, several coupling parameters of the transmission tower-line coupling system are controlled and adjusted, specifically:

[0027] Inputting all of the first factor data and the first nonlinear vibration response data into a decision model, and then using a non-dominated sorting genetic algorithm with minimizing the nonlinear vibration response of the transmission tower-line coupling system as an optimization goal, solving the decision model to obtain a first coupling parameter combination; wherein the first coupling parameter combination includes parameter values ​​corresponding to several coupling parameters of the transmission tower-line coupling system;

[0028] According to the first coupling parameter combination, several coupling parameters of the transmission tower-line coupling system are controlled and adjusted.

[0029] The preferred solution of implementing the embodiment of the present invention utilizes a non-dominated sorting genetic algorithm, which can effectively handle multi-objective optimization problems, such as maintaining a balance between other performance indicators while reducing nonlinear vibration response. The first coupling parameter combination obtained by this method is usually the global optimal solution or a better solution under various design constraints and performance requirements. Then, based on the optimized first coupling parameter combination, the coupling parameters of the transmission tower-line coupling system are controlled and adjusted, which can not only reduce the occurrence and impact of nonlinear vibration, but also improve the adaptability and safety of the structure in complex environments.

[0030] As a preferred solution, the structural parameters of the transmission tower-line coupling system are obtained as follows:

[0031] Performing feature extraction on the design drawings of the transmission tower-line coupling system to obtain corresponding structural feature data, and performing text recognition on the design drawings of the transmission tower-line coupling system to obtain corresponding text information;

[0032] The structural characteristic data and the text information are integrated to obtain the structural parameters of the transmission tower-line coupling system.

[0033] By implementing the preferred solution of the embodiment of the present invention, various structural feature data in the design drawings of the transmission tower-line coupling system can be obtained through feature extraction technology, including geometric shape, size, material properties, etc., to achieve a comprehensive understanding and description of the structure. In addition, using text recognition technology, key text information can be extracted from the design drawings. Then, by fusing the structural feature data and text information, the structural parameters of the transmission tower-line coupling system can be comprehensively and accurately determined, providing effective reference data support for subsequent analysis and decision-making.

[0034] As a preferred solution, the vibration-inducing factors of the transmission tower-line coupling system include: the wind speed at the location of the transmission tower-line coupling system, the wind direction at the location of the transmission tower-line coupling system, the precipitation at the location of the transmission tower-line coupling system, the earthquake level at the location of the transmission tower-line coupling system, and the degree of icing on the transmission tower-line coupling system.

[0035] By implementing the preferred solution of the embodiment of the present invention, by comprehensively considering the influence of multiple vibration-inducing factors on the transmission tower-line coupling system, such as wind speed, wind direction, precipitation, and earthquake severity at the location of the transmission tower-line coupling system, as well as the degree of icing of the transmission tower-line coupling system, the decision-making model can more comprehensively evaluate and control the vibration response of the structure, effectively responding to complex environmental conditions and external disturbances.

[0036] In order to solve the same technical problem, an embodiment of the present invention further provides a transmission tower-line coupling system vibration control system, comprising:

[0037] a characteristic analysis module, configured to analyze material nonlinear characteristics and geometric nonlinear characteristics of the transmission tower-line coupling system based on structural parameters of the transmission tower-line coupling system, and obtain first nonlinear vibration response data of the transmission tower-line coupling system;

[0038] A data acquisition module, configured to acquire first element data corresponding to a plurality of vibration-inducing elements of the transmission tower-line coupling system in real time;

[0039] A parameter adjustment module is configured to input all of the first element data and the first nonlinear vibration response data into a decision model so that the decision model outputs a corresponding first coupling parameter combination, and to control and adjust a plurality of coupling parameters of the transmission tower-line coupling system according to the first coupling parameter combination to achieve vibration control of the transmission tower-line coupling system; wherein the decision model is obtained by training a support vector machine or a convolutional neural network using a sample database, the sample database including a plurality of second coupling parameter combinations, a plurality of second vibration element combinations, and second nonlinear vibration response data generated by the transmission tower-line coupling system under the action of each second coupling parameter combination and each second vibration element combination, and the second vibration element combination including second element data corresponding to a plurality of vibration elements.

[0040] As a preferred solution, the characteristic analysis module specifically includes:

[0041] an analysis and processing unit, configured to analyze the material nonlinear characteristics and geometric nonlinear characteristics of the transmission tower-line coupling system based on the structural parameters of the transmission tower-line coupling system, obtain the nonlinear vibration characteristics of the transmission tower-line coupling system, and then discretize the nonlinear vibration characteristics to obtain a nonlinear vibration control equation containing nonlinear terms;

[0042] The time domain integral solving unit is used to perform a time domain integral solution on the nonlinear vibration control equation containing nonlinear terms to obtain first nonlinear vibration response data of the transmission tower-line coupling system.

[0043] As a preferred solution, the parameter adjustment module specifically includes:

[0044] an optimization solving unit, configured to input all of the first factor data and the first nonlinear vibration response data into a decision model, and then solve the decision model using a non-dominated sorting genetic algorithm with minimizing the nonlinear vibration response of the transmission tower-line coupling system as an optimization objective to obtain a first coupling parameter combination; wherein the first coupling parameter combination includes parameter values ​​corresponding to a plurality of coupling parameters of the transmission tower-line coupling system;

[0045] A parameter adjustment unit is used to control and adjust several coupling parameters of the transmission tower-line coupling system according to the first coupling parameter combination. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 : A schematic flow chart of a vibration control method for a transmission tower-line coupling system provided in Example 1 of the present invention;

[0047] Figure 2 : A structural schematic diagram of a transmission tower-line coupling system vibration control system provided in Example 1 of the present invention. DETAILED DESCRIPTION

[0048] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0049] Embodiment one:

[0050] Please refer to Figure 1 , a transmission tower-line coupling system vibration control method provided by an embodiment of the present invention, the method includes steps S1 to S3, each step is specifically as follows:

[0051] Step S1: Based on the structural parameters of the transmission tower-line coupling system, the material nonlinear characteristics and geometric nonlinear characteristics of the transmission tower-line coupling system are analyzed to obtain first nonlinear vibration response data of the transmission tower-line coupling system.

[0052] In this embodiment, the transmission tower-line coupling system includes a transmission tower, transmission lines, and viscous dampers and multi-tuned dampers positioned at predetermined locations on the transmission tower. Conventional viscoelastic dampers, by comparison, have very limited energy dissipation capabilities. Under the same displacement conditions, the envelope area of ​​their hysteresis curves is significantly smaller than that of fluid dampers. Furthermore, the durability of viscoelastic materials is difficult to address, especially for tower systems used in exposed locations. The durability of viscoelastic materials is even more challenging to ensure in the presence of sun, rain, and the strong chloride-salt corrosion environment found in the Guangdong coastal waters. However, the fluid material used in viscous dampers exhibits excellent temperature stability in environments ranging from -40°C to 80°C, and since the fluid material is sealed in a cylinder, its durability is unaffected. Under the same displacement conditions, the hysteresis envelope area of ​​viscous dampers is significantly greater than that of viscoelastic dampers, indicating a higher energy dissipation and vibration reduction capability. The primary material used in multi-frequency modulated dampers is a mass block (such as a steel block), which inherently presents no durability issues. Furthermore, the use of multiple frequency modulated dampers provides vibration damping capabilities across a wider frequency band. Furthermore, because the transmission tower-line coupling system is a highly flexible structural system, the impact of higher-order vibration modes is significant. This means that multiple vibration modes participate in the wind-induced vibrations of the tower-line system and significantly impact them. The tuned damper (TMD) actually controls a specific vibration mode, potentially negatively impacting other vibration modes. Therefore, in response to the multi-mode participation characteristics of the transmission tower-line coupling system, this embodiment employs multiple tuned mass dampers (MTMDs) to achieve wider-band vibration control, resulting in better wind-induced vibration control.

[0053] As a preferred solution, the process for obtaining the “structural parameters of the transmission tower-line coupling system” mentioned in step S1 includes steps S01 to S02, and each step is specifically as follows:

[0054] Step S01 : performing feature extraction on the design drawings of the transmission tower-line coupling system to obtain corresponding structural feature data, and performing text recognition on the design drawings of the transmission tower-line coupling system to obtain corresponding text information.

[0055] It should be noted that the structural characteristic data of the transmission tower-line coupling system include but are not limited to component types, component size parameters (such as the height of the transmission tower, the span of the transmission tower and the type of transmission line), the connection relationship between components and the relative position relationship of components.

[0056] Step S02: fusing structural feature data and text information to obtain structural parameters of the transmission tower-line coupling system.

[0057] As a preferred solution, step S1 includes steps S11 to S12, and the details of each step are as follows:

[0058] Step S11: Based on the structural parameters of the transmission tower-line coupling system, the material nonlinear characteristics and geometric nonlinear characteristics of the transmission tower-line coupling system are analyzed to obtain the nonlinear vibration characteristics of the transmission tower-line coupling system. The nonlinear vibration characteristics are then discretized to obtain a nonlinear vibration control equation containing nonlinear terms.

[0059] As a preferred solution, step S11 may include steps S111 to S113, and the details of each step are as follows:

[0060] Step S111: Based on the structural parameters of the transmission tower-line coupling system, the material nonlinear characteristics and geometric nonlinear characteristics of the transmission tower-line coupling system are analyzed to obtain the nonlinear vibration characteristics of the transmission tower-line coupling system.

[0061] In this embodiment, based on the structural parameters of the transmission tower-line coupling system, the material nonlinear characteristics and geometric nonlinear characteristics of the transmission tower-line coupling system are analyzed. A nonlinear frequency response curve is plotted based on the analysis results, and the nonlinear frequency response curve is used as the nonlinear frequency response characteristic of the transmission tower-line coupling system. A mechanical nonlinear vibration analysis is then performed on the nonlinear frequency response curve. Based on the analysis results, the nonlinear vibration characteristics of the transmission tower-line coupling system are determined.

[0062] Step S112: Based on the nonlinear vibration characteristics, a nonlinear vibration model is established that takes into account geometric nonlinearity and material nonlinearity.

[0063] Step S113: using the finite element method to discretize the nonlinear vibration model to obtain a nonlinear vibration control equation containing nonlinear terms.

[0064] It should be noted that the nonlinear vibration control equations containing nonlinear terms are a set of nonlinear differential equations that describe the vibration of the system. These equations usually involve factors such as geometric nonlinearity of the structure, nonlinearity of the material, or nonlinear damping.

[0065] As a preferred solution, step S11 may also include steps S114 to S117, and the details of each step are as follows:

[0066] Step S114: spatially discretize the structural parameters of the transmission tower-line coupling system to obtain a first rigid body matrix and a first mass matrix of the transmission tower-line coupling system.

[0067] Step S115: linearly combine the first rigid body matrix and the first mass matrix to obtain a first damping matrix of the transmission tower-line coupling system.

[0068] It should be noted that the mass matrix reflects the mass distribution of the transmission tower-line coupling system, the damping matrix reflects the energy dissipation within the transmission tower-line coupling system, and the stiffness matrix is ​​used to describe the ability of the transmission tower-line coupling system to resist deformation during the deformation process.

[0069] Step S116: Using the first damping matrix, time-discretize the first rigid body matrix and the first mass matrix to obtain a second rigid body matrix and a second mass matrix.

[0070] Step S117 , using a nonlinear dynamic analysis method, the first damping matrix, the second rigid body matrix, the second mass matrix and the load vector are integrated to form a nonlinear vibration control equation containing nonlinear terms.

[0071] The load vector is calculated based on the external load and combined with a preset motion control method.

[0072] It should be noted that external loads include, but are not limited to, wind loads, ice loads, and seismic loads. External loads refer to external constraints and forces. Based on the load vectors, the structural safety and functional performance of the transmission tower-line coupling system under different external forces can be determined.

[0073] In step S12, the Newmark-β method (step-by-step integration method) is used to perform time-domain integration on the nonlinear vibration control equation containing nonlinear terms to obtain the dynamic response of the transmission tower-line coupling system under the action of nonlinear vibration, which is used as the first nonlinear vibration response data of the transmission tower-line coupling system.

[0074] In this embodiment, nonlinear vibration response data includes, but is not limited to, transmission tower vibration amplitude, transmission tower displacement, transmission line vibration amplitude, frequency characteristics, and displacement vectors, velocity vectors, and acceleration vectors of the transmission tower-line coupling system under various operating conditions. Nonlinear vibration response data may also include any possible nonlinear effects, such as harmonics or harmonic generation.

[0075] As another example, after obtaining the nonlinear vibration control equation containing nonlinear terms, referring to steps S13 to S15, the first nonlinear vibration response data of the transmission tower-line coupling system can be analyzed based on the nonlinear vibration control equation containing nonlinear terms. The specific steps are as follows:

[0076] Step S13, using a multi-scale method, the nonlinear vibration control equation containing nonlinear terms is expanded to separate the high-frequency vibration components and the low-frequency vibration components, and the evolution equation of the transmission tower-line coupling system on a slow time scale is obtained.

[0077] In step S14, the first M order terms are selected for retention, and the remaining terms are discarded as high-order terms, thereby obtaining a control equation describing the slow vibration behavior of the system, thereby achieving order reduction of the nonlinear vibration control equation for subsequent analysis and processing.

[0078] Step S15: solving the reduced-order nonlinear vibration control equation to obtain first nonlinear vibration response data of the transmission tower-line coupling system.

[0079] It should be noted that by analyzing the reduced-order control equations, the stability, resonance characteristics, and various nonlinear response behaviors of the transmission tower-line coupling system during slow vibration can be obtained.

[0080] Step S2: acquiring first element data corresponding to a plurality of vibration-inducing elements of the transmission tower-line coupling system in real time.

[0081] As a preferred option, the vibration-inducing factors of the transmission tower-line coupling system include but are not limited to the following: wind speed at the location of the transmission tower-line coupling system, wind direction at the location of the transmission tower-line coupling system, precipitation at the location of the transmission tower-line coupling system, earthquake magnitude at the location of the transmission tower-line coupling system, and the degree of icing on the transmission tower-line coupling system.

[0082] In step S3, all the first factor data and the first nonlinear vibration response data are input into the decision model so that the decision model outputs the corresponding first coupling parameter combination, and according to the first coupling parameter combination, several coupling parameters of the transmission tower-line coupling system are controlled and adjusted to achieve vibration control of the transmission tower-line coupling system.

[0083] The decision model is obtained by training a support vector machine or a convolutional neural network using a sample database. The sample database includes multiple second coupling parameter combinations, multiple second vibration element combinations, and second nonlinear vibration response data generated by the transmission tower-line coupling system under the action of each second coupling parameter combination and each second vibration element combination. The second vibration element combination includes second element data corresponding to several vibration elements.

[0084] In this embodiment, the data in the sample database can be collected in a data-driven manner.

[0085] As a preferred solution, step S3 includes step S31 to step S32, and each step is specifically as follows:

[0086] In step S31, all first factor data and first nonlinear vibration response data are input into a decision model. Then, a non-dominated sorting genetic algorithm is used to solve the decision model with the optimization goal of minimizing the nonlinear vibration response of the transmission tower-line coupling system, thereby obtaining a first coupling parameter combination and realizing automatic optimization of the coupling parameter combination. The first coupling parameter combination includes parameter values ​​corresponding to several coupling parameters of the transmission tower-line coupling system.

[0087] Step S32: applying the first coupling parameter combination optimized in step S31 to the transmission tower-line coupling system. Specifically, according to the first coupling parameter combination, several coupling parameters of the transmission tower-line coupling system are controlled and adjusted accordingly.

[0088] It should be noted that the coupling parameters that need to be optimized include but are not limited to mass, coupling stiffness and damping.

[0089] In this embodiment, after adjusting the coupling parameters of the transmission tower-line coupling system, a corresponding nonlinear vibration model can be re-established based on the current transmission tower-line coupling system, and its dynamic response under nonlinear vibration can be analyzed. This dynamic response analysis then determines whether the transmission tower-line coupling system meets design requirements. If so, it is determined that the current transmission tower-line coupling system has achieved the preset vibration control effect. If not, it indicates that the current nonlinear vibration control effect is unsatisfactory, and further adjustment of the coupling parameters of the transmission tower-line coupling system is still required.

[0090] Please refer to Figure 2 , which is a schematic diagram of the structure of a transmission tower-line coupling system vibration control system provided by an embodiment of the present invention. The system includes a characteristic analysis module M1, a data acquisition module M2, and a parameter adjustment module M3. The details of each module are as follows:

[0091] The characteristic analysis module M1 is used to analyze the material nonlinear characteristics and geometric nonlinear characteristics of the transmission tower-line coupling system based on the structural parameters of the transmission tower-line coupling system, and obtain the first nonlinear vibration response data of the transmission tower-line coupling system;

[0092] The data acquisition module M2 is used to obtain first element data corresponding to several vibration-inducing elements of the transmission tower-line coupling system in real time;

[0093] The parameter adjustment module M3 is used to input all the first element data and the first nonlinear vibration response data into the decision model so that the decision model outputs the corresponding first coupling parameter combination, and controls and adjusts several coupling parameters of the transmission tower-line coupling system according to the first coupling parameter combination to achieve vibration control of the transmission tower-line coupling system; wherein the decision model is obtained by training a support vector machine or a convolutional neural network using a sample database, the sample database including multiple second coupling parameter combinations, multiple second vibration element combinations, and second nonlinear vibration response data generated by the transmission tower-line coupling system under the action of each second coupling parameter combination and each second vibration element combination, and the second vibration element combination includes second element data corresponding to several vibration elements.

[0094] As a preferred solution, the characteristic analysis module M1 specifically includes an analysis and processing unit 11 and a time domain integral solution unit 12. The details of each unit are as follows:

[0095] An analysis and processing unit 11 is configured to analyze the material nonlinear characteristics and geometric nonlinear characteristics of the transmission tower-line coupling system based on the structural parameters of the transmission tower-line coupling system, obtain the nonlinear vibration characteristics of the transmission tower-line coupling system, and then discretize the nonlinear vibration characteristics to obtain a nonlinear vibration control equation containing nonlinear terms;

[0096] The time domain integral solving unit 12 is used to perform time domain integral solving on the nonlinear vibration control equation containing nonlinear terms to obtain first nonlinear vibration response data of the transmission tower-line coupling system.

[0097] As a preferred solution, the parameter adjustment module M3 specifically includes an optimization solution unit 31 and a parameter adjustment unit 32. The details of each unit are as follows:

[0098] The optimization solving unit 31 is configured to input all first factor data and first nonlinear vibration response data into a decision model, and then solve the decision model using a non-dominated sorting genetic algorithm with minimizing the nonlinear vibration response of the transmission tower-line coupling system as the optimization goal to obtain a first coupling parameter combination; wherein the first coupling parameter combination includes parameter values ​​corresponding to a plurality of coupling parameters of the transmission tower-line coupling system;

[0099] The parameter adjustment unit 32 is used to control and adjust several coupling parameters of the transmission tower-line coupling system according to the first coupling parameter combination.

[0100] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working process of the system described above can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here.

[0101] Compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0102] The present invention provides a vibration control method and system for a transmission tower-line coupling system. Taking into account the structural material nonlinearity of the transmission tower-line coupling system and the geometric nonlinearity caused by the tower-line coupling, based on the structural parameters of the transmission tower-line coupling system, the material nonlinear characteristics and geometric nonlinear characteristics of the transmission tower-line coupling system are analyzed to obtain first nonlinear vibration response data of the transmission tower-line coupling system, and first element data corresponding to several vibration-inducing elements of the transmission tower-line coupling system are obtained in real time. Then, all the first element data and the first nonlinear vibration response data are input into a pre-trained decision model so that the decision model outputs a corresponding first coupling parameter combination. According to the first coupling parameter combination, several coupling parameters of the transmission tower-line coupling system are controlled and adjusted. This can suppress the nonlinear vibration of the transmission tower-line coupling system to a certain extent, thereby improving the operational stability and safety of the transmission tower-line coupling system and the transmission system. In addition, a sample database including multiple second coupling parameter combinations, multiple second vibration element combinations, and second nonlinear vibration response data generated by the transmission tower-line coupling system under the action of each second coupling parameter combination and each second vibration element combination is used to train a support vector machine or a convolutional neural network to obtain a decision model, so that the decision model learns the mapping relationship between the coupling parameter combination and the vibration element combination and the nonlinear vibration response data of the transmission tower-line coupling system, so as to respond to changes in the first element data corresponding to the multiple vibration elements of the transmission tower-line coupling system and the first nonlinear vibration response data of the transmission tower-line coupling system, and determine in real time the decision to adjust the multiple coupling parameters of the transmission tower-line coupling system, thereby achieving real-time suppression of the vibration of the transmission tower-line coupling system.

[0103] The specific embodiments described above further illustrate the objectives, technical solutions, and beneficial effects of the present invention. It should be understood that the above descriptions are merely specific embodiments of the present invention and are not intended to limit the scope of protection of the present invention. In particular, it should be noted that any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included within the scope of protection of the present invention for those skilled in the art.

Claims

1. A method for controlling vibration of a transmission tower-line coupling system, characterized in that: include: Analyzing the material nonlinear characteristics and geometric nonlinear characteristics of the transmission tower-line coupling system based on the structural parameters of the transmission tower-line coupling system to obtain first nonlinear vibration response data of the transmission tower-line coupling system; Acquiring first element data corresponding to a plurality of vibration-inducing elements of the transmission tower-line coupling system in real time; Inputting all of the first factor data and the first nonlinear vibration response data into a decision model so that the decision model outputs a corresponding first coupling parameter combination, and controlling and adjusting a plurality of coupling parameters of the transmission tower-line coupling system according to the first coupling parameter combination to achieve vibration control of the transmission tower-line coupling system; The decision model is obtained by training a support vector machine or a convolutional neural network using a sample database, wherein the sample database includes multiple second coupling parameter combinations, multiple second vibration element combinations, and second nonlinear vibration response data generated by the transmission tower-line coupling system under the action of each second coupling parameter combination and each second vibration element combination, and the second vibration element combination includes second element data corresponding to several vibration elements.

2. A transmission tower-line coupling system vibration control method according to claim 1, characterized in that: The method of analyzing the material nonlinear characteristics and geometric nonlinear characteristics of the transmission tower-line coupling system based on the structural parameters of the transmission tower-line coupling system to obtain the first nonlinear vibration response data of the transmission tower-line coupling system is specifically as follows: Based on the structural parameters of the transmission tower-line coupling system, the material nonlinear characteristics and geometric nonlinear characteristics of the transmission tower-line coupling system are analyzed to obtain the nonlinear vibration characteristics of the transmission tower-line coupling system. The nonlinear vibration characteristics are then discretized to obtain a nonlinear vibration control equation containing nonlinear terms. The nonlinear vibration control equation containing the nonlinear term is solved by time domain integration to obtain first nonlinear vibration response data of the transmission tower-line coupling system.

3. A transmission tower-line coupling system vibration control method according to claim 2, characterized in that: Based on the structural parameters of the transmission tower-line coupling system, the material nonlinear characteristics and geometric nonlinear characteristics of the transmission tower-line coupling system are analyzed to obtain the nonlinear vibration characteristics of the transmission tower-line coupling system. Then, the nonlinear vibration characteristics are discretized to obtain the nonlinear vibration control equation containing nonlinear terms, which is specifically: Based on the structural parameters of the transmission tower-line coupling system, the material nonlinear characteristics and geometric nonlinear characteristics of the transmission tower-line coupling system are analyzed to obtain the nonlinear vibration characteristics of the transmission tower-line coupling system; Based on the nonlinear vibration characteristics, a nonlinear vibration model is established; The nonlinear vibration model is discretized by using a finite element method to obtain a nonlinear vibration control equation containing nonlinear terms.

4. A transmission tower-line coupling system vibration control method according to claim 2, characterized in that: Based on the structural parameters of the transmission tower-line coupling system, the material nonlinear characteristics and geometric nonlinear characteristics of the transmission tower-line coupling system are analyzed to obtain the nonlinear vibration characteristics of the transmission tower-line coupling system. Then, the nonlinear vibration characteristics are discretized to obtain the nonlinear vibration control equation containing nonlinear terms, which is specifically: spatially discretizing the structural parameters of the transmission tower-line coupling system to obtain a first rigid body matrix and a first mass matrix of the transmission tower-line coupling system; Performing a linear combination of the first rigid body matrix and the first mass matrix to obtain a first damping matrix of the transmission tower-line coupling system; Using the first damping matrix, time-discretize the first rigid body matrix and the first mass matrix to obtain a second rigid body matrix and a second mass matrix; Based on the first damping matrix, the second rigid body matrix, the second mass matrix and the load vector, a nonlinear vibration control equation containing nonlinear terms is constructed; wherein the load vector is calculated based on the external load and combined with a preset motion control method.

5. A transmission tower-line coupling system vibration control method according to claim 1, characterized in that: The step of inputting all the first factor data and the first nonlinear vibration response data into a decision model so that the decision model outputs a corresponding first coupling parameter combination, and controlling and adjusting a plurality of coupling parameters of the transmission tower-line coupling system according to the first coupling parameter combination is specifically as follows: Inputting all of the first factor data and the first nonlinear vibration response data into a decision model, and then using a non-dominated sorting genetic algorithm with minimizing the nonlinear vibration response of the transmission tower-line coupling system as an optimization goal, solving the decision model to obtain a first coupling parameter combination; wherein the first coupling parameter combination includes parameter values ​​corresponding to several coupling parameters of the transmission tower-line coupling system; According to the first coupling parameter combination, several coupling parameters of the transmission tower-line coupling system are controlled and adjusted.

6. A transmission tower-line coupling system vibration control method according to claim 1, characterized in that: The structural parameters of the transmission tower-line coupling system are obtained as follows: Performing feature extraction on the design drawings of the transmission tower-line coupling system to obtain corresponding structural feature data, and performing text recognition on the design drawings of the transmission tower-line coupling system to obtain corresponding text information; The structural characteristic data and the text information are integrated to obtain the structural parameters of the transmission tower-line coupling system.

7. A transmission tower-line coupling system vibration control method according to claim 1, characterized in that: The vibration-inducing factors of the transmission tower-line coupling system include: the wind speed at the location of the transmission tower-line coupling system, the wind direction at the location of the transmission tower-line coupling system, the precipitation at the location of the transmission tower-line coupling system, the earthquake level at the location of the transmission tower-line coupling system, and the degree of icing on the transmission tower-line coupling system.

8. A transmission tower-line coupling system vibration control system, characterized in that: include: a characteristic analysis module, configured to analyze material nonlinear characteristics and geometric nonlinear characteristics of the transmission tower-line coupling system based on structural parameters of the transmission tower-line coupling system, and obtain first nonlinear vibration response data of the transmission tower-line coupling system; A data acquisition module, configured to acquire first element data corresponding to a plurality of vibration-inducing elements of the transmission tower-line coupling system in real time; A parameter adjustment module is configured to input all of the first element data and the first nonlinear vibration response data into a decision model so that the decision model outputs a corresponding first coupling parameter combination, and to control and adjust a plurality of coupling parameters of the transmission tower-line coupling system according to the first coupling parameter combination to achieve vibration control of the transmission tower-line coupling system; wherein the decision model is obtained by training a support vector machine or a convolutional neural network using a sample database, the sample database including a plurality of second coupling parameter combinations, a plurality of second vibration element combinations, and second nonlinear vibration response data generated by the transmission tower-line coupling system under the action of each second coupling parameter combination and each second vibration element combination, and the second vibration element combination including second element data corresponding to a plurality of vibration elements.

9. A transmission tower-line coupling system vibration control system according to claim 8, characterized in that: The characteristic analysis module specifically includes: an analysis and processing unit, configured to analyze the material nonlinear characteristics and geometric nonlinear characteristics of the transmission tower-line coupling system based on the structural parameters of the transmission tower-line coupling system, obtain the nonlinear vibration characteristics of the transmission tower-line coupling system, and then discretize the nonlinear vibration characteristics to obtain a nonlinear vibration control equation containing nonlinear terms; The time domain integral solving unit is used to perform a time domain integral solution on the nonlinear vibration control equation containing nonlinear terms to obtain first nonlinear vibration response data of the transmission tower-line coupling system.

10. A transmission tower-line coupling system vibration control system according to claim 8, characterized in that: The parameter adjustment module specifically includes: an optimization solving unit, configured to input all of the first factor data and the first nonlinear vibration response data into a decision model, and then solve the decision model using a non-dominated sorting genetic algorithm with minimizing the nonlinear vibration response of the transmission tower-line coupling system as an optimization objective to obtain a first coupling parameter combination; wherein the first coupling parameter combination includes parameter values ​​corresponding to a plurality of coupling parameters of the transmission tower-line coupling system; A parameter adjustment unit is used to control and adjust several coupling parameters of the transmission tower-line coupling system according to the first coupling parameter combination.

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