A method, apparatus, electronic equipment, and storage medium for calculating conductor and ground tension in overhead transmission lines.

Abstract

This invention discloses a method, apparatus, electronic device, and storage medium for calculating the tension of an overhead conductor / ground wire. The method includes: acquiring the vibration acceleration signal, span, tension, and mass per unit length of the conductor / ground wire; transforming the vibration acceleration signal to generate an acceleration spectrum; extracting all peak frequencies from the acceleration spectrum to generate a peak frequency sequence, designating the lowest frequency as the first-order natural frequency and the remaining peak frequencies as higher-order natural frequencies; calculating the ratio of each higher-order natural frequency to the first-order natural frequency to generate a theoretical order; and selecting target peak frequencies based on an error threshold. The conductor / ground wire tension is calculated based on the first-order natural frequency, the target peak frequency, its theoretical order, span, tension, and mass per unit length. Implementing this invention improves the accuracy and stability of tension measurement.

Description

Technical Field

[0001] This invention relates to the field of power transmission line technology, specifically to a method, apparatus, electronic device, and storage medium for calculating conductor and ground wire tension in overhead power transmission lines. Background Technology

[0002] In overhead transmission lines, conductor and ground wire tension is a key factor determining their operational safety and stability. However, as conductor operating time increases, factors such as temperature, wind load, and icing can significantly alter conductor tension, thus affecting the transmission line's performance and safety. To achieve real-time monitoring and accurate assessment of conductor and ground wire tension, current research and applications primarily rely on traditional tension measurement methods, including direct testing and indirect calculation methods based on sag inverse algorithms. These methods deduce tension values ​​by measuring specific parameters, such as conductor sag and span, combined with theoretical models.

[0003] However, existing methods are insufficient in extracting and utilizing conductor state information, often relying on multiple complex measurement parameters and mathematical models. Limited by varying environmental conditions, these methods are highly dependent on measurement accuracy and struggle to adapt to complex field conditions. Therefore, how to leverage the dynamic characteristics of the conductor itself to reduce the impact of environmental conditions on calculation results and improve the accuracy of conductor tension calculation has become an urgent technical problem to be solved. Summary of the Invention

[0004] This invention provides a method, apparatus, electronic device, and storage medium for calculating conductor and ground wire tension in overhead transmission lines. By implementing this invention, the calculation errors caused by significant variations in environmental conditions in existing technologies can be resolved, thereby improving the accuracy of conductor and ground wire tension calculations.

[0005] One embodiment of the present invention provides a method for calculating conductor-to-ground tension in overhead transmission lines, comprising:

[0006] Acquire the vibration acceleration signal, span, tension, and mass per unit length of the conductor;

[0007] The vibration acceleration signal of the ground wire is transformed and processed to generate an acceleration spectrum.

[0008] Based on the acceleration spectrum, extract all peak frequencies and generate a peak frequency sequence;

[0009] The lowest peak frequency in the peak frequency sequence is denoted as the first-order natural frequency, and the other peak frequencies in the peak frequency sequence other than the first-order natural frequency are denoted as higher-order natural frequencies.

[0010] Calculate the ratio of each higher natural frequency to the first natural frequency in turn to generate the theoretical order corresponding to the higher natural frequency.

[0011] Based on the first-order natural frequency, higher-order natural frequencies, and the theoretical order corresponding to the higher-order natural frequencies, calculate the order error of each higher-order natural frequency; and take the higher-order natural frequencies whose order error does not exceed the preset error threshold as the target peak frequency.

[0012] The conductor tension is calculated based on the first-order natural frequency, the peak frequencies of each target, the theoretical order corresponding to each peak frequency, the span of the conductor, the tension of the conductor, and the mass per unit length of the conductor.

[0013] Furthermore, a vibration acceleration sensor is disposed on the surface of the grounding wire, and the acquisition of the vibration acceleration signal of the grounding wire includes:

[0014] After the impact hammer strikes the ground wire at a preset position with a preset force, the vibration acceleration data of the vibration acceleration sensor is collected to obtain the vibration acceleration signal of the ground wire.

[0015] Furthermore, the transformation processing of the vibration acceleration signal of the ground wire to generate an acceleration spectrum includes:

[0016] The vibration acceleration signal of the ground wire is decomposed into several modal components.

[0017] Calculate the correlation coefficient between each modal component, and denote the modal component whose correlation coefficient with other modal components does not exceed the preset threshold as the noise modal component;

[0018] The modal components, excluding the noise modal components, are reconstructed to generate a reconstructed vibration acceleration signal.

[0019] The reconstructed vibration acceleration signal is subjected to Fourier transform to generate an acceleration spectrum.

[0020] Furthermore, the step of extracting all peak frequencies from the acceleration spectrum and generating a peak frequency sequence includes:

[0021] The frequency domain peak value in the acceleration spectrum is determined by the following formula:

[0022]

[0023] in, a The magnitude of the acceleration spectrum; f For frequency;

[0024] The frequency at which the frequency domain peak is located is denoted as the peak frequency, and a peak frequency sequence is generated based on all the peak frequencies.

[0025] Furthermore, the order error of higher-order natural frequencies is calculated using the following formula:

[0026]

[0027] Where, σ n For higher-order natural frequencies w n The order error; w n is the higher-order natural frequency; n is the theoretical order corresponding to the higher-order natural frequency; w1 is the first-order natural frequency.

[0028] Furthermore, the step of calculating and generating the conductor tension based on the first-order natural frequency, the peak frequencies of each target, the theoretical order corresponding to each target peak frequency, the span of the conductor, the tension of the conductor, and the mass per unit length of the conductor includes:

[0029] The tension corresponding to the peak frequency of each target is calculated using the following formula:

[0030]

[0031] Among them, T n For the target peak frequency w′ n The corresponding tension; L is the span of the conductor; m is the mass per unit length of the conductor; n′ is the target peak frequency w′. n The corresponding theoretical order; π is the mathematical constant pi;

[0032] The tension corresponding to the peak frequency of each target is averaged and calculated to generate the conductor tension.

[0033] Based on the above method embodiments, the present invention provides corresponding apparatus embodiments.

[0034] One embodiment of the present invention provides a conductor-ground wire tension calculation device for overhead transmission lines, comprising: a conductor-ground wire data acquisition module, an acceleration spectrum generation module, a peak frequency sequence generation module, a higher-order natural frequency generation module, a theoretical order generation module, a target peak frequency generation module, and a conductor-ground wire tension calculation module;

[0035] The ground wire data acquisition module is used to acquire the vibration acceleration signal, span, tension, and mass per unit length of the ground wire;

[0036] The acceleration spectrum generation module is used to transform and process the vibration acceleration signal of the ground wire to generate an acceleration spectrum.

[0037] The peak frequency sequence generation module is used to extract all peak frequencies from the acceleration spectrum and generate a peak frequency sequence.

[0038] The higher-order natural frequency generation module is used to record the lowest peak frequency in the peak frequency sequence as the first-order natural frequency, and to record the other peak frequencies in the peak frequency sequence other than the first-order natural frequency as higher-order natural frequencies.

[0039] The theoretical order generation module is used to calculate the ratio of each higher natural frequency to the first natural frequency in turn, and generate the theoretical order corresponding to the higher natural frequency.

[0040] The target peak frequency generation module is used to calculate the order error of each higher-order natural frequency based on the first-order natural frequency, higher-order natural frequencies, and the theoretical order corresponding to the higher-order natural frequencies; and to take the higher-order natural frequencies whose order errors do not exceed a preset error threshold as the target peak frequencies.

[0041] The conductor tension calculation module is used to calculate and generate conductor tension based on the first-order natural frequency, the peak frequencies of each target, the theoretical order corresponding to each target peak frequency, the span of the conductor, the tension of the conductor, and the mass per unit length of the conductor.

[0042] Furthermore, the overhead transmission line conductor-to-ground wire tension calculation device, the acceleration spectrum generation module, the step of transforming and processing the vibration acceleration signal of the conductor-to-ground wire to generate an acceleration spectrum includes:

[0043] The vibration acceleration signal of the ground wire is decomposed into several modal components.

[0044] Calculate the correlation coefficient between each modal component, and denote the modal component whose correlation coefficient with other modal components does not exceed the preset threshold as the noise modal component;

[0045] The modal components, excluding the noise modal components, are reconstructed to generate a reconstructed vibration acceleration signal.

[0046] The reconstructed vibration acceleration signal is subjected to Fourier transform to generate an acceleration spectrum.

[0047] Based on the above method embodiments, the present invention provides corresponding electronic device embodiments.

[0048] An embodiment of the present invention provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it can implement the method for calculating the conductor and ground wire tension of an overhead transmission line as described in any of the above-described method embodiments.

[0049] Based on the above method embodiments, the present invention provides corresponding storage medium embodiments.

[0050] One embodiment of the present invention provides a storage medium storing a computer program thereon, which, when executed by a processor, can implement the method for calculating the conductor and ground wire tension of an overhead transmission line as described in any of the above-described method embodiments.

[0051] Compared with the prior art, the present invention has the following beneficial effects:

[0052] This invention provides a method, apparatus, electronic device, and storage medium for calculating conductor-to-ground wire tension in overhead transmission lines. The method is based on the vibration characteristics of the conductor-to-ground wire. It acquires vibration acceleration signals, span length, tension, and mass per unit length, transforms the vibration acceleration signals to generate an acceleration spectrum, and extracts the peak frequencies. The lowest frequency is defined as the first-order natural frequency, and the ratio of higher-order natural frequencies to the first-order frequency is calculated to generate a theoretical order. Higher-order frequencies with order errors within a preset range are further selected as target peak frequencies. Finally, using the first-order frequency, the target peak frequency, and the theoretical order, combined with the structural parameters of the conductor-to-ground wire, the conductor-to-ground wire tension is calculated, achieving efficient and accurate tension measurement.

[0053] This invention extracts the natural frequency of the conductor and ground wire from the vibration acceleration signal and matches it with the theoretical order. It then uses the inherent relationship between the natural frequency of the conductor and the tension to calculate the tension of the conductor and ground wire, thereby avoiding interference from changes in the external environment. This solves the calculation error caused by the large influence of environmental conditions on the existing technology and improves the accuracy of conductor and ground wire tension calculation. Attached Figure Description

[0054] Figure 1 This is a flowchart illustrating a method for calculating conductor-to-ground tension in an overhead transmission line according to an embodiment of the present invention.

[0055] Figure 2 This is an acceleration spectrum diagram of a ground wire provided in an embodiment of the present invention.

[0056] Figure 3 This is a schematic diagram of the force analysis of the conductor and ground wire provided in an embodiment of the present invention.

[0057] Figure 4 This is a schematic diagram of the structure of a conductor-to-ground tension calculation device for overhead transmission lines provided in an embodiment of the present invention. Detailed Implementation

[0058] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0059] like Figure 1 As shown, an embodiment of the present invention provides a method for calculating the conductor-to-ground tension of an overhead transmission line, which includes at least the following steps:

[0060] Step S1: Obtain the vibration acceleration signal, span, tension, and mass per unit length of the conductor;

[0061] In a preferred embodiment, a vibration acceleration sensor is disposed on the surface of the ground wire, and the step of acquiring the vibration acceleration signal of the ground wire includes:

[0062] After the impact hammer strikes the ground wire at a preset position with a preset force, the vibration acceleration data of the vibration acceleration sensor is collected to obtain the vibration acceleration signal of the ground wire.

[0063] Step S2: Transform the vibration acceleration signal of the ground wire to generate an acceleration spectrum.

[0064] like Figure 2 As shown, in a preferred embodiment, the step of transforming the vibration acceleration signal of the ground wire to generate an acceleration spectrum includes:

[0065] The vibration acceleration signal of the ground wire is decomposed into several modal components.

[0066] Calculate the correlation coefficient between each modal component, and denote the modal component whose correlation coefficient with other modal components does not exceed the preset threshold as the noise modal component;

[0067] The modal components, excluding the noise modal components, are reconstructed to generate a reconstructed vibration acceleration signal.

[0068] The reconstructed vibration acceleration signal is subjected to Fourier transform to generate an acceleration spectrum.

[0069] Specifically, the vibration acceleration signal of the conductor is decomposed into modes using Empirical Mode Decomposition (EMD) or Ensemble Empirical Mode Decomposition (EEMD) methods. The original signal is then divided into several modal components with different characteristic frequencies, each reflecting a different frequency component of the vibration signal. Subsequently, the correlation coefficients between each modal component are calculated to quantify their similarity. Modal components whose correlation coefficients with other modal components do not exceed a preset threshold are labeled as noise modal components. These noise modal components typically reflect interference characteristics from measurement errors or environmental noise. By removing the noise modal components, the remaining effective modal components are reconstructed to generate a reconstructed vibration acceleration signal that more closely approximates the actual vibration characteristics of the conductor. Finally, the reconstructed vibration acceleration signal is processed using Fast Fourier Transform (FFT) to convert it into frequency domain data, generating an acceleration spectrum. This spectrum clearly displays the frequency distribution characteristics of the conductor vibration signal, providing a reliable frequency domain basis for subsequent natural frequency extraction and tension calculation.

[0070] Step S3: Based on the acceleration spectrum, extract all peak frequencies and generate a peak frequency sequence;

[0071] In a preferred embodiment, the step of extracting all peak frequencies and generating a peak frequency sequence based on the acceleration spectrum includes:

[0072] The frequency domain peak value in the acceleration spectrum is determined by the following formula:

[0073]

[0074] in, a The magnitude of the acceleration spectrum; f For frequency;

[0075] The frequency at which the frequency domain peak is located is denoted as the peak frequency, and a peak frequency sequence is generated based on all the peak frequencies.

[0076] Step S4: Record the lowest peak frequency in the peak frequency sequence as the first-order natural frequency, and record the other peak frequencies in the peak frequency sequence other than the first-order natural frequency as higher-order natural frequencies.

[0077] Step S5: Calculate the ratio of each higher-order natural frequency to the first-order natural frequency in sequence to generate the theoretical order corresponding to the higher-order natural frequency.

[0078] It is necessary to explain here that the following is the theoretical derivation of the theoretical order corresponding to the higher-order natural frequencies:

[0079] like Figure 3 As shown, step one involves studying the vibration characteristics of the conductor / ground wire. The vibration of the conductor / ground wire generally approximates the vibration of a string. Dynamic analysis of the overhead conductor / ground wire yields the mechanical and torque balance expressions for its vibration:

[0080]

[0081] Where m is the mass per unit length, in kg / m; Q c For shear force, the unit is N; for bending moment, the unit is N.

[0082] Step 2: Simplify the mechanical and moment balance expressions. The relationship between the bending moment and deflection of the beam is as follows: Substituting into equation (2) for simplification, and then using the method of separation of variables to solve, setting the solution as y = U(x)V(t), we can obtain:

[0083]

[0084] Where EI is the stiffness of the conductor; U(x) is the (principal) mode shape function; V(t) is a time-dependent function that describes the changes of each mode over time;

[0085] Since the left side of the equation is only a function of x and the right side is only a function of t, for the equations to be equal, both sides must be equal to a constant. Let this constant be w. 2 Then equation (3) can be simplified to

[0086]

[0087] Step 3: Substitute the boundary conditions to determine the state equation for the vibration of the conductor. Since the two ends of the conductor are fixed, the boundary conditions are as follows:

[0088]

[0089] Substituting equation (5) into equation (4), we can obtain the expression for the natural frequency of the conductor vibration:

[0090]

[0091] Where L is the gear length, in meters.

[0092] Step 4: Simplified analysis of the natural frequency of the conductor. Considering the length of the conductor segment, its stiffness is not negligible. When the length of the conductor is several hundred meters, it can be equivalent to a flexible rope, and the stiffness of the conductor can be ignored. Therefore, equation (6) can be simplified to:

[0093]

[0094] Since the tension, length and infinitesimal mass of the overhead line are constants, equation (7) is a constant Ψ, that is, the nth vibration frequency is n times the first frequency, and the difference between two adjacent natural frequencies is the first vibration frequency.

[0095] Step S6: Calculate the order error of each higher-order natural frequency based on the first-order natural frequency, higher-order natural frequencies, and the theoretical order corresponding to the higher-order natural frequencies; take the higher-order natural frequencies whose order errors do not exceed the preset error threshold as the target peak frequencies.

[0096] In a preferred embodiment, the order error of the higher-order natural frequencies is calculated using the following formula:

[0097]

[0098] Where, σ n For higher-order natural frequencies w n The order error; w n denoted as , where is the higher-order natural frequency; n is the theoretical order corresponding to the higher-order natural frequency; and w1 is the first-order natural frequency. Specifically, if the calculated order error is less than or equal to ±5%, the order error is considered acceptable.

[0099] Step S7: Calculate and generate the conductor tension based on the first-order natural frequency, the peak frequency of each target, the theoretical order corresponding to each target peak frequency, the span of the conductor, the tension of the conductor, and the mass per unit length of the conductor.

[0100] In a preferred embodiment, the step of calculating and generating the conductor tension based on the first-order natural frequency, each target peak frequency, the theoretical order corresponding to each target peak frequency, the conductor span, the conductor tension, and the mass per unit length of the conductor includes:

[0101] The tension corresponding to the peak frequency of each target is calculated using the following formula:

[0102]

[0103] Among them, T n For the target peak frequency w′ n The corresponding tension; L is the span of the conductor; m is the mass per unit length of the conductor; n′ is the target peak frequency w′. n The corresponding theoretical order; π is the mathematical constant pi;

[0104] The tension corresponding to the peak frequency of each target is averaged and calculated to generate the conductor tension.

[0105] Based on the above method embodiments, the present invention provides corresponding apparatus embodiments.

[0106] like Figure 4 As shown, an embodiment of the present invention provides a conductor-ground wire tension calculation device for overhead transmission lines, comprising: a conductor-ground wire data acquisition module, an acceleration spectrum generation module, a peak frequency sequence generation module, a higher-order natural frequency generation module, a theoretical order generation module, a target peak frequency generation module, and a conductor-ground wire tension calculation module;

[0107] The ground wire data acquisition module is used to acquire the vibration acceleration signal, span, tension, and mass per unit length of the ground wire;

[0108] The acceleration spectrum generation module is used to transform and process the vibration acceleration signal of the ground wire to generate an acceleration spectrum.

[0109] The peak frequency sequence generation module is used to extract all peak frequencies from the acceleration spectrum and generate a peak frequency sequence.

[0110] The higher-order natural frequency generation module is used to record the lowest peak frequency in the peak frequency sequence as the first-order natural frequency, and to record the other peak frequencies in the peak frequency sequence other than the first-order natural frequency as higher-order natural frequencies.

[0111] The theoretical order generation module is used to calculate the ratio of each higher natural frequency to the first natural frequency in turn, and generate the theoretical order corresponding to the higher natural frequency.

[0112] The target peak frequency generation module is used to calculate the order error of each higher-order natural frequency based on the first-order natural frequency, higher-order natural frequencies, and the theoretical order corresponding to the higher-order natural frequencies; and to take the higher-order natural frequencies whose order errors do not exceed a preset error threshold as the target peak frequencies.

[0113] The conductor tension calculation module is used to calculate and generate conductor tension based on the first-order natural frequency, the peak frequencies of each target, the theoretical order corresponding to each target peak frequency, the span of the conductor, the tension of the conductor, and the mass per unit length of the conductor.

[0114] In a preferred embodiment, the overhead transmission line conductor-to-ground wire tension calculation device and the acceleration spectrum generation module, wherein the step of transforming and processing the vibration acceleration signal of the conductor-to-ground wire to generate an acceleration spectrum includes:

[0115] The vibration acceleration signal of the ground wire is decomposed into several modal components.

[0116] Calculate the correlation coefficient between each modal component, and denote the modal component whose correlation coefficient with other modal components does not exceed the preset threshold as the noise modal component;

[0117] The modal components, excluding the noise modal components, are reconstructed to generate a reconstructed vibration acceleration signal.

[0118] The reconstructed vibration acceleration signal is subjected to Fourier transform to generate an acceleration spectrum.

[0119] It should be noted that the embodiments of the device described above correspond to the embodiments of the present invention described above, and can realize the method for calculating the conductor and ground wire tension of overhead transmission lines as described in any one of the above embodiments of the present invention. Furthermore, the embodiments of the device described above are merely illustrative. The modules described as separate components may or may not be physically separate, and the components shown as modules may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. In addition, in the accompanying drawings of the device embodiments provided by the present invention, the connection relationship between modules indicates that they have a communication connection, which can be implemented as one or more communication buses or signal lines. Those skilled in the art can understand and implement this without creative effort.

[0120] Based on the above-described method embodiments of the present invention, a corresponding embodiment of an electronic device is provided.

[0121] An embodiment of the present invention provides an electronic device, including a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor. When the processor executes the computer program, it implements the method for calculating conductor and ground wire tension of an overhead transmission line according to any one of the present invention, or, when the processor executes the computer program, it implements the functions of each module in the above-described device embodiments.

[0122] For example, the computer program may be divided into one or more modules, which are stored in the memory and executed by the processor to complete the present invention. The one or more modules may be a series of computer program instruction segments capable of performing specific functions, which describe the execution process of the computer program in the terminal device.

[0123] The terminal device may be a desktop computer, laptop, handheld computer, or cloud server, etc. The terminal device may include, but is not limited to, a processor and a memory.

[0124] The processor can be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor can be a microprocessor or any conventional processor. The processor is the control center of the terminal device, connecting all parts of the terminal device via various interfaces and lines.

[0125] The memory can be used to store the computer programs and / or modules. The processor implements various functions of the terminal device by running or executing the computer programs and / or modules stored in the memory and by calling data stored in the memory. The memory may mainly include a program storage area and a data storage area. The program storage area may store the operating system, at least one application program required for a function, etc.; the data storage area may store data created based on the use of the mobile phone, etc. In addition, the memory may include high-speed random access memory, and may also include non-volatile memory, such as hard disk, RAM, plug-in hard disk, smart media card (SMC), secure digital card (SD), flash card, at least one disk storage device, flash memory device, or other volatile solid-state storage device.

[0126] Based on the above method embodiments, the present invention provides corresponding storage medium embodiments;

[0127] Another embodiment of the present invention provides a storage medium comprising a stored computer program, wherein, when the computer program is executed, the device containing the storage medium is controlled to execute the conductor-to-ground tension calculation method for any of the above-described overhead transmission lines of the present invention.

[0128] The aforementioned storage medium is a computer-readable storage medium. The computer program includes computer program code, which can be in the form of source code, object code, executable file, or certain intermediate forms. The computer-readable medium can include any entity or device capable of carrying the computer program code, recording media, USB flash drives, portable hard drives, magnetic disks, optical disks, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signals, telecommunication signals, and software distribution media, etc. It should be noted that the content included in the computer-readable medium can be appropriately added or removed according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, computer-readable media do not include electrical carrier signals and telecommunication signals.

[0129] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of those different embodiments or examples.

[0130] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A method for calculating conductor-to-ground tension in overhead transmission lines, characterized in that, include: Acquire the vibration acceleration signal, span, tension, and mass per unit length of the conductor; The vibration acceleration signal of the ground wire is transformed and processed to generate an acceleration spectrum. Based on the acceleration spectrum, extract all peak frequencies and generate a peak frequency sequence; The lowest peak frequency in the peak frequency sequence is denoted as the first-order natural frequency, and the other peak frequencies in the peak frequency sequence other than the first-order natural frequency are denoted as higher-order natural frequencies. Calculate the ratio of each higher natural frequency to the first natural frequency in turn to generate the theoretical order corresponding to the higher natural frequency. Based on the first-order natural frequency, higher-order natural frequencies, and the theoretical order corresponding to the higher-order natural frequencies, calculate the order error of each higher-order natural frequency; and take the higher-order natural frequencies whose order error does not exceed the preset error threshold as the target peak frequency. The conductor tension is calculated based on the first-order natural frequency, the peak frequencies of each target, the theoretical order corresponding to each peak frequency, the span of the conductor, the tension of the conductor, and the mass per unit length of the conductor.

2. The method for calculating conductor and ground wire tension in overhead transmission lines as described in claim 1, characterized in that, A vibration acceleration sensor is disposed on the surface of the ground wire, and the acquisition of the vibration acceleration signal of the ground wire includes: After the impact hammer strikes the ground wire at a preset position with a preset force, the vibration acceleration data of the vibration acceleration sensor is collected to obtain the vibration acceleration signal of the ground wire.

3. The method for calculating conductor and ground wire tension in overhead transmission lines as described in claim 2, characterized in that, The process of transforming the vibration acceleration signal of the ground wire to generate an acceleration spectrum includes: The vibration acceleration signal of the ground wire is decomposed into several modal components. Calculate the correlation coefficient between each modal component, and denote the modal component whose correlation coefficient with other modal components does not exceed the preset threshold as the noise modal component; The modal components, excluding the noise modal components, are reconstructed to generate a reconstructed vibration acceleration signal. The reconstructed vibration acceleration signal is subjected to Fourier transform to generate an acceleration spectrum.

4. The method for calculating conductor and ground wire tension in overhead transmission lines as described in claim 3, characterized in that, The step of extracting all peak frequencies from the acceleration spectrum and generating a peak frequency sequence includes: The frequency domain peak value in the acceleration spectrum is determined by the following formula: Where a is the magnitude of the acceleration spectrum; f is the frequency; The frequency at which the frequency domain peak is located is denoted as the peak frequency, and a peak frequency sequence is generated based on all the peak frequencies.

5. The method for calculating conductor and ground wire tension in overhead transmission lines as described in claim 4, characterized in that, The order error of higher-order natural frequencies can be calculated using the following formula: Where, σ n For higher-order natural frequencies w n The order error; w n is the higher-order natural frequency; n is the theoretical order corresponding to the higher-order natural frequency; w1 is the first-order natural frequency.

6. The method for calculating conductor and ground wire tension in overhead transmission lines as described in claim 5, characterized in that, The process of calculating and generating conductor tension based on the first-order natural frequency, the peak frequencies of each target, the theoretical order corresponding to each target peak frequency, the span of the conductor, the tension of the conductor, and the mass per unit length of the conductor includes: The tension corresponding to the peak frequency of each target is calculated using the following formula: Among them, T n For the target peak frequency w′ n The corresponding tension; L is the span of the conductor; m is the mass per unit length of the conductor; n′ is the target peak frequency w′. n The corresponding theoretical order; π is the mathematical constant pi; The tension corresponding to the peak frequency of each target is averaged and calculated to generate the conductor tension.

7. A device for calculating conductor-to-ground tension in an overhead transmission line, characterized in that, include: The module includes a conductor / ground wire data acquisition module, an acceleration spectrum generation module, a peak frequency sequence generation module, a higher-order natural frequency generation module, a theoretical order generation module, a target peak frequency generation module, and a conductor / ground wire tension calculation module. The ground wire data acquisition module is used to acquire the vibration acceleration signal, span, tension, and mass per unit length of the ground wire; The acceleration spectrum generation module is used to transform and process the vibration acceleration signal of the ground wire to generate an acceleration spectrum. The peak frequency sequence generation module is used to extract all peak frequencies from the acceleration spectrum and generate a peak frequency sequence. The higher-order natural frequency generation module is used to record the lowest peak frequency in the peak frequency sequence as the first-order natural frequency, and to record the other peak frequencies in the peak frequency sequence other than the first-order natural frequency as higher-order natural frequencies. The theoretical order generation module is used to calculate the ratio of each higher natural frequency to the first natural frequency in turn, and generate the theoretical order corresponding to the higher natural frequency. The target peak frequency generation module is used to calculate the order error of each higher-order natural frequency based on the first-order natural frequency, higher-order natural frequencies, and the theoretical order corresponding to the higher-order natural frequencies; and to take the higher-order natural frequencies whose order errors do not exceed a preset error threshold as the target peak frequencies. The conductor tension calculation module is used to calculate and generate conductor tension based on the first-order natural frequency, the peak frequencies of each target, the theoretical order corresponding to each target peak frequency, the span of the conductor, the tension of the conductor, and the mass per unit length of the conductor.

8. The conductor-to-ground tension calculation device for overhead transmission lines as described in claim 7, characterized in that, The acceleration spectrum generation module transforms the vibration acceleration signal of the ground wire to generate an acceleration spectrum, including: The vibration acceleration signal of the ground wire is decomposed into several modal components. Calculate the correlation coefficient between each modal component, and denote the modal component whose correlation coefficient with other modal components does not exceed the preset threshold as the noise modal component; The modal components, excluding the noise modal components, are reconstructed to generate a reconstructed vibration acceleration signal. The reconstructed vibration acceleration signal is subjected to Fourier transform to generate an acceleration spectrum.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, it can implement the method for calculating the conductor and ground wire tension of the overhead transmission line according to any one of claims 1 to 6.

10. A storage medium having a computer program stored thereon, characterized in that: When executed by a processor, the computer program can implement the method for calculating the conductor and ground wire tension of an overhead transmission line as described in any one of claims 1 to 6.

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