Power transmission line fitting life evaluation method and system based on aeolian vibration finite element

Abstract

The invention provides a power transmission line hardware service life evaluation method and system based on an aeolian vibration finite element, and relates to the technical field of power transmission line health evaluation, and the method comprises the steps: carrying out the element division of a fastening hardware finite element model based on a element division standard; applying the aeolian vibration pre-test scheme to the finite element model of the fastening metal, and obtaining a pre-test reference data set; obtaining a pre-test reference result based on the pre-test reference data set; a life diagnosis breeze characteristic limit stored in a database is matched based on a pre-test reference result; aeolian vibration environment parameters of the fastening fitting are obtained, aeolian vibration environment characteristic values are calculated, and a fastening fitting service life diagnosis curve is matched based on the service life diagnosis aeolian characteristic limit and the aeolian vibration environment characteristic values; acquiring stress characteristic parameters of each unit element based on the finite element model of the fastening fitting, acquiring a stress characteristic value of the unit element based on the stress characteristic parameters, and acquiring a service life diagnostic value of the fastening fitting based on the stress characteristic value of the unit element and the service life diagnostic curve of the fastening fitting.

Description

Technical Field

[0001] The present disclosure relates to the technical field of health assessment of power transmission lines, and in particular to a method and system for assessing the life of power transmission line hardware based on breeze vibration finite element. Background Art

[0002] The statements in this section merely provide background information related to the present disclosure and do not necessarily constitute prior art.

[0003] At present, the breeze conditions in the actual working environment of transmission line fittings have an impact on the working state and actual life of the fittings that cannot be ignored. On the one hand, by analyzing the mechanical response of the fittings under breeze vibration, the current state of the fittings can be identified as well as the high-risk areas that cause high fatigue and high stress. On this basis, structural failure can be effectively prevented and the overall safety of transmission line fittings can be improved. On the other hand, through continuous monitoring and analysis of mechanical conditions, the health state of the fittings can be accurately judged, helping operation and maintenance personnel to promptly discover potential problems that the fittings may encounter in actual work and formulate corresponding response strategies, thereby effectively extending the service quality of the fittings.

[0004] At present, there are still some shortcomings in the mechanical analysis of power transmission line hardware under breeze vibration based on finite element, which are specifically reflected in the following aspects: it is difficult to effectively divide the analysis elements according to the complexity of the hardware, and to conduct accurate mechanical analysis and evaluation. The existing mechanical analysis methods are mainly based on classical mechanics methods and material mechanics to analyze the vibration characteristics of hardware. Classical mechanics describes the movement of macroscopic objects based on Newton's laws of motion. It is suitable for mechanical analysis of low-speed and macroscopic objects, but not for high-speed (relativistic effects), microscopic (quantum effects) and large-scale (gravitational field influence) systems. For complex nonlinear systems, classical mechanics is difficult to calculate accurately, and in many cases only approximate solutions can be obtained. Material mechanics studies the behavior and performance of materials under the action of forces. It is not suitable for mechanical analysis of all materials under high strain or complex loading conditions. For hardware composite materials or multiphase materials, contact interfaces and hardware structures with complex interactions, mechanical analysis is difficult and the accuracy is not high. Summary of the invention

[0005] In order to solve the above problems, the present invention proposes a method and system for evaluating the life of transmission line hardware based on breeze vibration finite element, determines the element standard of the finite element model of the fastener according to the characteristics of the fastener, obtains a pre-test reference data set for reference judgment of wind resistance by applying the breeze vibration pre-test scheme to the finite element model of the fastener, and establishes a systematic overall stress characteristic parameter collection and analysis mechanism by obtaining the unit element stress characteristic value of each unit element, which can effectively reveal the response characteristics of the unit element under stress state, and at the same time makes full use of the finite element modeling's ability to collect data in detail, and improves the health assessment ability of hardware.

[0006] According to some embodiments, the present disclosure adopts the following technical solutions:

[0007] The transmission line hardware life assessment method based on breeze vibration finite element includes:

[0008] Constructing a finite element model of the fastening metal, determining a subdivision standard of the finite element model of the fastening metal, and subdividing the finite element model of the fastening metal based on the subdivision standard;

[0009] Apply the set breeze vibration pre-test scheme to the finite element model of the fastener and obtain a pre-test reference data set; obtain breeze vibration pre-test characteristic values ​​based on the pre-test reference data set, and comprehensively analyze the breeze vibration pre-test characteristic values ​​to obtain pre-test reference results; match the life diagnosis breeze characteristic limits stored in the database based on the pre-test reference results;

[0010] Obtain breeze vibration environment parameters of fasteners and calculate breeze vibration environment characteristic values, and match fastener life diagnosis curves based on life diagnosis breeze characteristic limits and breeze vibration environment characteristic values;

[0011] Based on the finite element model of the fastener, the stress characteristic parameters of each unit element are obtained, the unit element stress characteristic value is obtained based on the stress characteristic parameter, and the life diagnosis value of the fastener is obtained based on the unit element stress characteristic value and the fastener life diagnosis curve.

[0012] According to some embodiments, the present disclosure adopts the following technical solutions:

[0013] The transmission line hardware life assessment system based on breeze vibration finite element includes:

[0014] A model building module is used to build a finite element model of the fastening metal, determine a sub-element standard of the finite element model of the fastening metal, and sub-element the finite element model of the fastening metal based on the sub-element standard;

[0015] A pre-test module is used to apply the set breeze vibration pre-test scheme to the finite element model of the fastener and obtain a pre-test reference data set; obtain breeze vibration pre-test characteristic values ​​based on the pre-test reference data set, and comprehensively analyze the breeze vibration pre-test characteristic values ​​to obtain pre-test reference results; match the life diagnosis breeze characteristic limits stored in the database based on the pre-test reference results;

[0016] The evaluation module is used to obtain the breeze vibration environment parameters of the fasteners and calculate the breeze vibration environment characteristic values, match the fastener life diagnosis curve based on the life diagnosis breeze characteristic limit and the breeze vibration environment characteristic values; obtain the stress characteristic parameters of each unit element based on the fastener finite element model, obtain the unit element stress characteristic value based on the stress characteristic parameters, and obtain the life diagnosis value of the fastener based on the unit element stress characteristic value and the fastener life diagnosis curve.

[0017] According to some embodiments, the present disclosure adopts the following technical solutions:

[0018] A computer program product comprises a computer program, wherein when the computer program is executed by a processor, the method for evaluating the life of power transmission line hardware based on breeze vibration finite element is implemented.

[0019] According to some embodiments, the present disclosure adopts the following technical solutions:

[0020] A non-transitory computer-readable storage medium is used to store computer instructions. When the computer instructions are executed by a processor, the transmission line hardware life assessment method based on breeze vibration finite element is implemented.

[0021] According to some embodiments, the present disclosure adopts the following technical solutions:

[0022] An electronic device comprises: a processor, a memory and a computer program; wherein the processor is connected to the memory, the computer program is stored in the memory, and when the electronic device is running, the processor executes the computer program stored in the memory so that the electronic device executes the transmission line hardware life assessment method based on breeze vibration finite element.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The transmission line fittings life assessment method based on breeze vibration finite element disclosed in the present invention determines the element division standard of the finite element model of the fasteners based on the fastener characteristic description set, fully considers that the fastener characteristics include not only the structural complexity of the fittings themselves, but also the connection method of the fittings when applied to the transmission line, both of which jointly affect the fastener characteristics, and quantitatively evaluates the characteristics of the fasteners through parameter collection and then matches the element division standard to determine whether secondary element division is needed, thereby improving the accuracy of finite element modeling, and the finite element model of the fasteners can be improved in terms of detail, reducing errors that may be caused by simplification, ensuring that the fasteners can collect target data in a limited manner in different breeze vibration scenarios, and perform accurate mechanical analysis and evaluation.

[0025] The disclosed method for evaluating the life of transmission line hardware based on breeze vibration finite element, applies a breeze vibration pre-test scheme to the finite element model of the fastening hardware to obtain a pre-test reference data set for reference judgment of wind resistance. When the evaluation result shows that the wind resistance is not up to standard, the fastening hardware will be marked in time, and a maintenance signal will be sent to the control terminal, thereby realizing real-time monitoring and maintenance feedback. On the one hand, it can effectively prevent accidents caused by hardware failure and ensure the safety of the transmission line. On the other hand, if the fastening hardware shows extremely poor performance under the breeze vibration pre-test scheme and is difficult to maintain safe operation in the actual working environment, the necessity of predicting the life is lost, thereby reducing unnecessary waste of prediction resources.

[0026] The disclosed method for assessing the life of transmission line fittings based on breeze vibration finite element method, the acquisition and analysis of overall stress characteristic parameters, by acquiring the unit element stress characteristic value of each unit element, establishes a systematic overall stress characteristic parameter collection and analysis mechanism, which not only provides basic data for subsequent analysis, but also can effectively reveal the response characteristics of the unit element under stress state, and at the same time makes full use of the finite element modeling's ability to collect data in detail, and can quickly obtain valuable parameter information, thereby improving the efficiency and accuracy of data collection and analysis. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings constituting a part of the present disclosure are used to provide a further understanding of the present disclosure. The illustrative embodiments of the present disclosure and their descriptions are used to explain the present disclosure and do not constitute an improper limitation on the present disclosure.

[0028] Figure 1 This is a flow chart of a method for evaluating the life of power transmission line hardware based on breeze vibration finite element according to an embodiment of the present disclosure;

[0029] Figure 2 The present invention is a flow chart of a method for obtaining a life diagnosis value of a fastener based on a stress characteristic value and a fastener life diagnosis curve according to an embodiment of the present invention. DETAILED DESCRIPTION

[0030] The present disclosure is further described below in conjunction with the accompanying drawings and embodiments.

[0031] It should be noted that the following detailed descriptions are all illustrative and are intended to provide further explanation of the present disclosure. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present disclosure belongs.

[0032] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present disclosure. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0033] Example 1

[0034] In one embodiment of the present disclosure, a method for evaluating the life of power transmission line hardware based on breeze vibration finite element is provided, comprising:

[0035] Step 1: construct a finite element model of the fastening metal, determine the element division standard of the finite element model of the fastening metal, and divide the finite element model of the fastening metal based on the element division standard;

[0036] Step 2: Apply the set breeze vibration pre-test scheme to the finite element model of the fastener and obtain a pre-test reference data set; obtain breeze vibration pre-test characteristic values ​​based on the pre-test reference data set, and comprehensively analyze the breeze vibration pre-test characteristic values ​​to obtain pre-test reference results; match the life diagnosis breeze characteristic limits stored in the database based on the pre-test reference results;

[0037] Step 3: Obtain the breeze vibration environment parameters of the fastener and calculate the breeze vibration environment characteristic value, and match the fastener life diagnosis curve based on the life diagnosis breeze characteristic limit and the breeze vibration environment characteristic value;

[0038] Step 4: Based on the finite element model of the fastener, obtain the stress characteristic parameters of each unit element, obtain the unit element stress characteristic value based on the stress characteristic parameters, and obtain the life diagnosis value of the fastener based on the unit element stress characteristic value and the fastener life diagnosis curve.

[0039] As an embodiment, the transmission line fitting life assessment method based on breeze vibration finite element disclosed in the present invention is as follows: Figure 1 As shown, the present disclosure provides a method for evaluating the life of transmission line hardware based on breeze vibration finite element, specifically a mechanical analysis method of transmission line hardware under breeze vibration based on finite element, to achieve the evaluation of the life of transmission line hardware, and the specific implementation process is as follows:

[0040] Step 1: construct a finite element model of the fastening metal, determine the element division standard of the finite element model of the fastening metal, and divide the finite element model of the fastening metal based on the element division standard;

[0041] Specifically, based on the fastener characteristic description set, a subdivision standard of the fastener finite element model is determined, and based on the subdivision standard, the fastener finite element model is subdivided, including:

[0042] 1) Obtaining a fastener characteristic description set based on the fastener panoramic model, the fastener characteristic description set including a fastener independent part description set and a fastener connection part description set;

[0043] The fastener panoramic model is a full-scale structural display model built based on the actual 3D structure of the fastener. It is mainly used to display the detailed characteristics and structure of the fastener, and present the size, thread, hole diameter and other geometric features of the fastener details.

[0044] Among them, the description set of independent parts of the hardware includes the number of chamfers, the maximum radius of curvature, the cross-sectional range and the volume-to-surface area ratio. Among them, chamfer refers to the beveled structure performed on the edge of the fastener to reduce the sharpness of the edge and relieve stress concentration. The number of chamfers is the number of this structure; the maximum radius of curvature is the maximum curvature value of the curved surface on the hardware, which is usually used to evaluate the geometric shape characteristics of the fastener; the cross-sectional range refers to the difference between the minimum and maximum cross-sectional areas of each cross section of the hardware, which is an important indicator for measuring the uniformity of the hardware cross section; the volume-to-surface area ratio is used to evaluate the compactness of the hardware design. The larger the volume-to-surface area ratio, the more compact the fastener is in weight and volume, and the more complex the design process and structure.

[0045] The hardware connection part refers to the contact part between the fastener and the line. The hardware connection part description set includes the contact area ratio and the contact point roughness. The contact area ratio refers to the ratio of the contact surface of the fastener connection part to the overall external area of ​​the fastener; the contact point roughness describes the microscopic irregularities between the connection surfaces, and the roughness parameters are obtained using contact surface measurement tools (such as 3D scanners).

[0046] 2) Calculate the hardware independent description value based on the hardware independent part description set, and calculate the hardware connection description value based on the hardware connection part description set; obtain the hardware independent description fusion factor and the hardware connection description fusion factor set in the database; obtain the hardware characteristic description value based on the hardware independent description value, the hardware connection description value, the hardware independent description fusion factor and the hardware connection description fusion factor;

[0047] Specifically, in a specific embodiment, the independent part of the hardware refers to the entire fastener, excluding the internal connection area, the independent part description set of the hardware refers to the characteristic description of the independent fastener when no external factors are considered, and the connection part description set of the hardware refers to the characteristic description of the part of the fastener that contacts the transmission line after the fastener is applied on the transmission line to generate external contact.

[0048] The calculation formula for the independent description value of hardware is:

[0049]

[0050] Among them, d is the independent description value of the hardware, b is the number of chamfers, r is the maximum radius of curvature, a is the cross-sectional range, j is the volume-to-surface area ratio, and e is a natural constant.

[0051] Furthermore, d is used to quantitatively describe the structural complexity of the independent parts of the hardware, b reflects the detailed processing in the design. Increasing b means that more complex processing technology is required, which increases the complexity of the structure to a certain extent. d is larger, r is directly related to the surface smoothness and fluid mechanics properties of the hardware. Smaller r usually has a less smooth surface, indicating a more complex structural process. d is larger, a reflects the uniformity between different cross-sections of the hardware. A larger a means that the cross-section of the hardware is uneven and variable, increasing the complexity of the hardware structure and resulting in a larger d. A higher j usually means that the weight and volume of the fastener design are more compact, which increases the complexity of the structure to a certain extent and improves d.

[0052] Furthermore, an increase in b may affect the overall geometry of the hardware, and this change in geometry will directly affect the maximum radius of curvature. For example, if an increase in b makes the edge smoother, r will also increase. A smaller a means a more uniform distribution of material, which can usually improve j. Increasing b may lead to an increase in structural complexity, thereby affecting j.

[0053] In a specific embodiment, the calculation formula of the hardware connection description value is:

[0054]

[0055] Among them, l is the hardware connection description value, c is the contact area ratio, and m is the contact point roughness.

[0056] Furthermore, l is used to quantitatively describe the structural complexity of the hardware connection part. A larger c usually enhances the bonding strength of the connection and ensures that the connected parts have better durability under working conditions. The larger m is, the irregularity of the rough surface makes the hardware load more unevenly distributed in the contact area, thereby increasing the complexity of the contact part of the connection structure, and l is larger.

[0057] Specifically, the calculation formula for the hardware characteristic description value is:

[0058]

[0059] Among them, f is the characteristic description value of the hardware, x d is the hardware independent description fusion factor, x l Describes the fusion factor for the hardware connection.

[0060] Furthermore, the hardware characteristic description value f is used to quantitatively describe the structural complexity of the fasteners applied to the transmission line under the actual working state. The larger the f, the higher the structural complexity under the actual working state. The larger the d and l, the more complex the structure of the connection part and the independent part of the hardware. The larger the f, the set hardware independent description fusion factor x. d And the hardware connection description fusion factor x l It is extracted from the database, and the historical measurements of d, l and x are established based on historical data. d 、x l The mapping set of d and l is obtained. d 、x l .

[0061] 3) Comprehensively analyze the hardware independent description value and hardware characteristic description value matching element standard, and divide the fastener hardware finite element model into several unit elements based on the element standard. The specific analysis process is as follows:

[0062] Obtain the calculated hardware independent description value and hardware characteristic description value; match the first element division standard stored in the database based on the hardware characteristic description value; obtain the hardware characteristic calibration value and the hardware independent calibration value stored in the database; determine whether the hardware characteristic description value is less than the hardware characteristic calibration value: if so, directly divide the finite element model of the fastener hardware based on the first element division standard stored in the database; if not, determine whether the hardware independent description value is less than the hardware independent calibration value: if not, obtain the hardware independent description deviation value based on the hardware independent description value and the hardware independent calibration value; match the secondary element division standard stored in the database based on the hardware independent description deviation value, and the secondary element division standard is a further subdivision degree based on the first element division standard; divide the finite element model of the fastener hardware again based on the secondary element division standard stored in the database; if yes, do not divide the finite element model of the fastener hardware again.

[0063] Among them, when the hardware characteristic description value is less than the hardware characteristic calibration value, that is, the overall complexity of the hardware is less than the calibration standard, the finite element model of the fastener hardware can be directly divided based on the first division standard to meet the data collection and mechanical analysis needs. However, when the hardware independent description value is not less than the hardware independent calibration value, the hardware independent description deviation value is obtained based on the hardware independent description value and the hardware independent calibration value and matched with the secondary division standard stored in the database. This is because the independent part of the hardware is the main body for judging the complexity of the hardware structure. If the main body is relatively complex, it should be further divided to obtain more detailed data collection units. If the main body is not relatively complex, but only the connection part is complex, resulting in a high hardware characteristic description value, then the impact on data collection is not significant, and no further division is required.

[0064] Furthermore, the process of obtaining the hardware independent description deviation value based on the hardware independent description value and the hardware independent calibration value stored in the database is as follows:

[0065] The difference between the hardware independent description value and the hardware independent calibration value stored in the database is obtained, and the difference is compared with the hardware independent calibration value stored in the database. The ratio of the difference and the difference to the hardware independent calibration value stored in the database is the hardware independent description deviation value. The hardware independent description deviation value is stored as a description deviation designated label, and the description deviation designated label is compared with the secondary element standard corresponding to each description deviation designated label stored in the database to obtain the secondary element standard corresponding to the description deviation designated label.

[0066] Among them, the secondary element standard is to further divide the unit element degree based on the first element standard. The collective secondary element refers to dividing the element volume obtained based on the first element standard into two, and obtaining several unit elements of smaller volume; the element standard can be adjusted dynamically, from the first element standard to the secondary element standard, realizing the hierarchical processing from coarse to fine. This method improves the accuracy of the finite element model, especially when facing complex hardware, it can better reflect its physical properties. The matching element process relies on the hardware characteristic calibration value stored in the database and the hardware independent calibration value for judgment, making the entire element process automatic and data-driven, reducing the need for manual intervention and improving the efficiency of modeling.

[0067] The present disclosure determines the element division standard of the finite element model of the fastener based on the fastener characteristic description set, fully considers that the characteristics of the fastener include not only the structural complexity of the hardware itself, but also the connection method of the hardware when it is used on the transmission line, both of which jointly affect the characteristics of the fastener. By collecting and quantitatively evaluating the characteristics of the fastener through parameters and then matching the element division standard, it is determined whether secondary element division is needed, thereby improving the accuracy of finite element modeling. The finite element model of the fastener can be improved in terms of detail, reducing the errors that may be caused by simplification, and ensuring that it is suitable for fasteners in different breeze vibration scenarios. It can collect target data in a limited way and perform accurate mechanical analysis and evaluation.

[0068] Step 2: Apply the set breeze vibration pre-test scheme to the finite element model of the fastener and obtain a pre-test reference data set; obtain breeze vibration pre-test characteristic values ​​based on the pre-test reference data set, and comprehensively analyze the breeze vibration pre-test characteristic values ​​to obtain pre-test reference results; match the life diagnosis breeze characteristic limits stored in the database based on the pre-test reference results, including:

[0069] The breeze vibration pre-test scheme stored in the database is applied to the finite element model of the fastener to obtain a pre-test reference data set, the breeze vibration pre-test characteristic value is obtained based on the pre-test reference data set, and the breeze vibration pre-test characteristic value is comprehensively analyzed to obtain the pre-test reference result; if the pre-test reference result is that the wind resistance capacity does not meet the standard, the wind resistance capacity of the fastener is marked as not meeting the standard and a maintenance signal is sent to the control terminal; if the pre-test reference result is that the wind resistance capacity meets the standard, the life diagnosis breeze characteristic limit stored in the database is matched based on the breeze vibration pre-test characteristic value.

[0070] By applying the breeze vibration pre-test scheme to the fasteners with the finite element model to obtain the pre-test reference data set for reference judgment of wind resistance, when the evaluation results show that the wind resistance is not up to standard, the fasteners will be marked in time and a maintenance signal will be sent to the control terminal, realizing real-time monitoring and maintenance feedback. On the one hand, it can effectively prevent accidents caused by hardware failure and ensure the safety of transmission lines. On the other hand, if the fasteners show extremely poor performance under the breeze vibration pre-test scheme and are difficult to maintain safe operation in the actual working environment, the need for predicting life is lost, reducing unnecessary waste of prediction resources. The specific process is:

[0071] 1) Apply the breeze vibration pre-test scheme to the fastener with a finite element model to obtain a pre-test reference data set, including:

[0072] Obtain a breeze vibration pre-test plan stored in a database, wherein the breeze vibration pre-test plan includes a pre-test wind force, a pre-test average wind speed, and a pre-test wind exposure time, wherein the pre-test wind force refers to the magnitude of the wind force simulated or actually applied during the pre-test process, which is usually expressed in units of force (such as Newtons), reflecting the force applied by the wind on the surface of the fastener; the pre-test average wind speed refers to the average value of the wind speed during the pre-test, which is usually expressed in meters per second (m / s); the pre-test wind exposure time refers to the duration of time that the fastener is actually subjected to the action of wind force during the pre-test process, which is usually expressed in seconds or minutes.

[0073] Furthermore, the breeze vibration pre-test scheme is applied to the fastener with a finite element model to obtain a pre-test reference data set, wherein the pre-test reference data set includes a pre-test vibration response time, a pre-test vibration intensity peak, a pre-test deformation area, and a pre-test displacement, wherein the pre-test vibration response time refers to the time delay after the fastener begins to show an obvious vibration response after the breeze vibration load is applied, which reflects the dynamic response characteristics of the fastener structure to external vibration stimulation, the pre-test vibration intensity peak is the maximum vibration intensity value observed during the application of the breeze vibration load, which defines the highest intensity level of vibration in the pre-test, and the pre-test deformation area It refers to the area of ​​the surface of the fastener where significant deformation occurs after a breeze vibration load is applied. It usually indicates the obvious deformation area of ​​the material caused by vibration. The size of the deformation area is closely related to the strength and stiffness of the hardware. A larger deformation area may indicate more stress concentration points. The pre-test displacement refers to the displacement change of a specific point or the entire fastener after a breeze vibration load is applied. The displacement can describe the degree of movement of the structure under vibration, usually in millimeters or microns. The displacement level is a key parameter for evaluating structural integrity and safety, especially for connecting parts. Larger displacements may cause connection failure.

[0074] 2) Obtain breeze vibration pre-test characteristic values ​​based on the pre-test reference data set, and comprehensively analyze the breeze vibration pre-test characteristic values ​​to obtain pre-test reference results, including:

[0075] A breeze vibration pre-test characteristic value is calculated based on a pre-test reference data set; a breeze vibration pre-test standard value stored in a database is obtained; a pre-test reference result is obtained by comparing the breeze vibration pre-test characteristic value with the breeze vibration pre-test standard value stored in the database, wherein the pre-test reference result includes whether the wind resistance meets the standard and whether the wind resistance does not meet the standard; if the breeze vibration pre-test characteristic value is greater than the breeze vibration pre-test standard value stored in the database, then the pre-test reference result is that the wind resistance does not meet the standard; if the breeze vibration pre-test characteristic value is not greater than the breeze vibration pre-test standard value stored in the database, then the pre-test reference result is that the wind resistance meets the standard.

[0076] Among them, the breeze vibration pre-test characteristic value is calculated based on the pre-test reference data set:

[0077]

[0078] Among them, Y is the breeze vibration pre-test characteristic value, T is the pre-test vibration response time, Z is the pre-test vibration intensity peak, P is the pre-test deformation area, and W is the pre-test displacement.

[0079] Furthermore, Y is used to quantitatively evaluate the stress performance of fasteners under the breeze vibration pre-test scheme. The larger the Y, the worse the wind resistance of the fasteners, and the more obvious the effect of breeze vibration on it. A shorter T means that the dynamic response of the structure to external vibration stimulation is faster, which may cause the fasteners to quickly enter the vibration state under the action of breeze, and the effect of breeze vibration on it is more obvious, thereby accelerating the arrival of Z. Conversely, a longer T may delay the increase in vibration intensity and affect the overall dynamic behavior. A larger Z will cause more significant stress concentration, which may lead to yield or fatigue damage of the material. Therefore, an increase in Z will lead to an increase in Y, indicating a decrease in the wind resistance of the hardware. A larger P usually means that under vibration load, the stress concentration points of the hardware increase, which may lead to more fatigue damage. Therefore, an increase in P may further lead to an increase in W, thereby increasing Y. A larger W usually indicates that the structure moves more under vibration, which may lead to connection failure or structural damage. Therefore, an increase in W makes the hardware less wind-resistant under breeze vibration, thereby increasing Y.

[0080] Furthermore, a shorter T usually means that the fastening hardware structure responds faster to external vibration stimulation, which may indicate that the damping characteristics of the structure are weaker and can reach Z quickly. A higher Z usually leads to greater stress concentration, which in turn causes a more significant P. The P of the hardware will also increase accordingly. An increase in P usually means that the overall deformation of the hardware under vibration is higher, resulting in an increase in the displacement change of a specific point or the whole, and an increase in W. The size of W is closely related to T. A shorter T means that the hardware can adapt to changes in breeze vibration more quickly, resulting in rapid changes in W. If T is longer, the change in W may lag behind, resulting in unstable dynamic behavior of the hardware under breeze. A higher Z usually causes more significant stress concentration, resulting in larger P and W.

[0081] 3) Match the life diagnostic breeze characteristic limits stored in the database based on the pre-test reference results, including:

[0082] If the pre-test reference result shows that the wind resistance meets the standard, the life diagnosis breeze characteristic limit stored in the database is matched based on the breeze vibration pre-test characteristic value, the breeze vibration pre-test characteristic value is stored as a pre-test limit designation label, and the pre-test limit designation label is compared with each pre-test limit setting label stored in the database to determine the pre-test limit setting label that is equal to the pre-test limit designation label, and obtain the life diagnosis breeze characteristic limit corresponding to the pre-test limit setting label.

[0083] The life diagnosis breeze characteristic limit is a standard value used to determine whether the current environment of the fastener is dangerous or safe. If the breeze vibration environment characteristic value is greater than or equal to the life diagnosis breeze characteristic limit stored in the database, the current environment will be marked as a dangerous environment. At this time, since the working environment exceeds the dangerous standard, the fasteners in the current working environment are difficult to connect or cannot work normally due to environmental problems, and there are safety hazards.

[0084] Step 3: Obtain the breeze vibration environment parameters of the fastener and calculate the breeze vibration environment characteristic value, and match the fastener life diagnosis curve based on the life diagnosis breeze characteristic limit and the breeze vibration environment characteristic value, including: obtaining the breeze vibration environment parameter set of the fastener and calculating the breeze vibration environment characteristic value, matching the fastener life diagnosis curve based on the life diagnosis breeze characteristic limit and the breeze vibration environment characteristic value, specifically including:

[0085] Step 1) obtaining a breeze vibration environment parameter set of the fastening hardware and calculating a breeze vibration environment characteristic value;

[0086] Specifically, step 1.1) obtains a breeze vibration environment parameter set of the fasteners, wherein the breeze vibration environment parameter set includes ambient wind force, ambient average wind speed, and wind exposure time, wherein the ambient wind force refers to the magnitude of the wind force applied to the fasteners in the actual working environment, expressed in units of force (such as Newtons), the ambient average wind speed refers to the average value of the wind speed during the actual working period, which is usually measured in meters per second (m / s), and the wind exposure time refers to the duration that the fasteners are actually subjected to wind force during the actual working period, which is usually expressed in seconds or minutes.

[0087] Step 1.2) Obtain a set of breeze vibration environment parameter correction factors set in a database, wherein the set of breeze vibration environment parameter correction factors includes an environmental wind force correction factor, an environmental average wind speed correction factor, and a wind exposure time correction factor; the set environmental wind force correction factor, environmental average wind speed correction factor, and wind exposure time correction factor are extracted from the database, and the historically measured environmental wind force, environmental average wind speed, and wind exposure time and environmental wind force correction factor are established based on historical data; a mapping set of environmental average wind speed correction factor and wind exposure time correction factor is obtained to obtain the environmental wind force correction factor, environmental average wind speed correction factor, and wind exposure time correction factor corresponding to the current environmental wind force, environmental average wind speed, and wind exposure time.

[0088] Step 1.3) obtaining a breeze vibration environment characteristic value based on a breeze vibration environment parameter set and a breeze vibration environment parameter correction factor set set in a database;

[0089] Among them, the calculation formula of the breeze vibration environment characteristic value is:

[0090]

[0091] Among them, WF is the characteristic value of the breeze vibration environment, Hf is the ambient wind force, Hs is the ambient average wind speed, Ht is the wind exposure time, Xf is the ambient wind force correction factor, Xs is the ambient average wind speed correction factor, and Xt is the wind exposure time correction factor.

[0092] In a specific embodiment, WF is used to represent the comprehensive intensity of breezes received by the fastener in the actual working environment. The larger the WF, the greater the comprehensive intensity of breezes received. Hf is a direct factor affecting WF. When Hf increases, the wind force applied to the fastener will also increase, thereby increasing WF. There is a relationship between Hs and Hf. According to the wind dynamics formula, Hf is usually proportional to the square of Hs. Therefore, an increase in Hs will lead to an increase in Hf, increasing the comprehensive intensity of breezes received, thereby increasing WF. A longer Ht may make the hardware last longer in a vibrating state. The intensity of breezes received accumulates over time, resulting in a cumulative effect of vibration, resulting in breezes of greater comprehensive intensity, thereby increasing WF.

[0093] Step 2) matching the fastener life diagnosis curve based on the life diagnosis breeze characteristic limit and the breeze vibration environment characteristic value, including:

[0094] Comprehensively compare the life diagnosis breeze characteristic limit and breeze vibration environment characteristic value stored in the database: if the breeze vibration environment characteristic value is greater than or equal to the life diagnosis breeze characteristic limit stored in the database, mark the current environment as a dangerous environment; if the breeze vibration environment characteristic value is less than the life diagnosis breeze characteristic limit stored in the database, store the breeze vibration environment characteristic value as a breeze vibration environment designated label, compare the breeze vibration environment designated label with the fastener life diagnosis curve corresponding to each breeze vibration environment designated label stored in the database, and obtain the fastener life diagnosis curve corresponding to the breeze vibration environment designated label.

[0095] Specifically, the fastener life diagnosis curve refers to the curve image of the life diagnosis value of the fastener changing with the overall stress characteristic value. The breeze vibration environment characteristic value is obtained by combining the breeze vibration environment parameter set and the correction factor set. This dynamic adjustment method can more accurately reflect the changes in wind force in the actual working environment and improve the reliability of the calculation results. By comparing with the life diagnosis breeze characteristic limits stored in the database, the current environment can be quickly and automatically marked as dangerous or safe. This real-time monitoring and automated judgment can greatly improve safety management efficiency and reduce the risk of errors in human judgment.

[0096] Step 4: Based on the finite element model of the fastener, the stress characteristic parameters of each unit element are obtained, the stress characteristic values ​​of the unit element are obtained based on the stress characteristic parameters, and the life diagnostic value of the fastener is obtained based on the stress characteristic values ​​of the unit element and the life diagnostic curve of the fastener, including: based on the finite element model of the fastener, the stress characteristic parameter set of each unit element is obtained, the stress characteristic value of the unit element is obtained based on the stress characteristic parameter set, and the life diagnostic value of the fastener is obtained by comprehensively analyzing the stress characteristic values ​​of the unit element and the life diagnostic curve of the fastener.

[0097] Specifically, step 4.1) obtains a finite element model of the fastener, wherein the finite element model of the fastener includes several unit elements; based on any unit element, a stress characteristic parameter set is obtained, wherein the stress characteristic parameter set includes stress vibration response time, stress vibration intensity peak value, stress deformation area, and stress displacement, wherein the stress vibration response time refers to the time delay for the fastener to begin to show an obvious vibration response after being subjected to a breeze vibration load in the actual working environment of the fastener, reflecting the response speed of the fastener structure to the external breeze vibration stimulation stress, the stress vibration intensity peak value is the maximum vibration intensity value observed under breeze vibration in the actual working environment of the fastener, the stress deformation area refers to the area of ​​the obvious deformation area caused by stress under the actual breeze vibration of the fastener, and a larger deformation area may indicate more stress concentration points, and the stress displacement refers to the displacement change of the overall stress of the fastener in the actual breeze vibration working scenario, describing the degree of movement of the structure under vibration, usually in millimeters or microns.

[0098] Step 4.2) Obtain the stress characteristic comparison value stored in the database, and comprehensively analyze the unit stress characteristic value and the stress characteristic comparison value stored in the database to obtain the overall stress characteristic value.

[0099] Specifically, the overall stress characteristic value is obtained based on the unit element stress characteristic value and the stress characteristic comparison value stored in the database, and the specific analysis process is: obtaining the unit element stress characteristic value of each unit element; counting and sorting the unit element stress characteristic values ​​of each unit element to obtain the unit element stress characteristic maximum value and the unit element stress characteristic minimum value, the difference between the unit element stress characteristic maximum value and the unit element stress characteristic minimum value is marked as the stress characteristic peak value, and the unit element stress characteristic maximum value is marked as the unit element stress characteristic maximum value; if the unit element stress characteristic value of the unit element is greater than or equal to the stress characteristic comparison value stored in the database, the unit element is marked as the main stress unit element; if the unit element stress characteristic value of the unit element is less than the stress characteristic comparison value stored in the database, the unit element is not marked as the main stress unit element; counting the cumulative volume of all main stress unit elements, marking the ratio of the cumulative volume to the volume of the fastening metal body as the main stress coverage ratio; obtaining the overall stress characteristic parameters, the overall stress characteristic parameters include the stress characteristic extreme difference, the stress characteristic peak value, and the main stress coverage ratio.

[0100] In a specific embodiment, this method systematically evaluates the stress state of each unit element by obtaining the unit element stress characteristic value of each unit element and performing statistics and sorting. By setting the stress characteristic comparison value, the main stress unit element can be quickly marked. Compared with the traditional single stress analysis method, this systematic processing method can more comprehensively reflect the stress distribution in the material or structure, and can clearly identify the situation of stress concentration or severe uneven distribution, which provides an important reference for subsequent life prediction.

[0101] Specifically, the unit element stress eigenvalue is calculated by the following formula:

[0102]

[0103] Among them, S is the unit stress characteristic value, T0 is the stress vibration response time, Z0 is the stress vibration intensity peak, P0 is the stress deformation area, and W0 is the stress displacement.

[0104] Furthermore, S is used to describe the stress performance of any unit element of the fastener under breeze vibration in the actual working environment. The larger S is, the more obvious the effect of breeze vibration on it, and the greater the comprehensive stress of breeze vibration on the unit element of the fastener.

[0105] Furthermore, by acquiring the unit element stress characteristic values ​​of each unit element, a systematic overall stress characteristic parameter collection and analysis mechanism was established. This not only provides basic data for subsequent analysis, but can also effectively reveal the response characteristics of the unit element under stress. At the same time, it enables the finite element modeling to fully utilize its ability to collect data in detail, and can quickly obtain valuable parameter information, thereby improving the efficiency and accuracy of data collection and analysis.

[0106] Step 4.3) Obtain the fastener life diagnostic value based on the overall stress characteristic value and the fastener life diagnostic curve, such as Figure 2 As shown, including:

[0107] Obtain overall stress characteristic parameters, and obtain an overall stress characteristic compensation factor set set in a database, wherein the overall stress characteristic compensation factor set includes a stress characteristic extreme difference compensation factor, a stress characteristic peak compensation factor, and a main stress coverage ratio compensation factor; the set stress characteristic extreme difference compensation factor, stress characteristic peak compensation factor, and main stress coverage ratio compensation factor are extracted from a database, and a mapping set of historically measured stress characteristic extreme difference, stress characteristic peak, main stress coverage ratio and stress characteristic extreme difference compensation factor, stress characteristic peak compensation factor, and main stress coverage ratio compensation factor is established according to historical data to obtain the stress characteristic extreme difference compensation factor, stress characteristic peak compensation factor, and main stress coverage ratio compensation factor corresponding to the current stress characteristic extreme difference, stress characteristic peak, and main stress coverage ratio.

[0108] Furthermore, an overall stress characteristic value is obtained based on the overall stress characteristic parameter and an overall stress characteristic compensation factor set in a database; and a life diagnosis value is obtained based on the overall stress characteristic value and a fastener life diagnosis curve.

[0109] Among them, the fastener life diagnosis curve is an image of the fastener life diagnosis value changing with the overall stress characteristic value.

[0110] Furthermore, the calculation formula of the overall stress characteristic value is:

[0111] Lz=Bb*sinh(1+e Lb )+Bf*sinh(1+e Lf )+Bc*sinh(1+e Lc )

[0112] Among them, Lz is the overall stress characteristic value, Lc is the stress characteristic extreme difference, Lf is the stress characteristic peak value, Lb is the main stress coverage ratio, Bc is the stress characteristic extreme difference compensation factor, Bf is the stress characteristic peak compensation factor, Bb is the main stress coverage ratio compensation factor, and Sinh is the sinh function.

[0113] Furthermore, Lz is used to represent the comprehensive stress of the fastener as a whole under breeze vibration in the actual working environment. The larger Lz is, the stronger the effect of breeze vibration on the fastener as a whole. If Lc is large, it means that the stress difference between different unit elements is significant, which may cause some unit elements to bear much greater stress than other unit elements, and Lz will be significantly affected. This is because extreme stress concentration will reduce the safety of the overall structure and increase the potential risk of damage caused by breeze vibration. An increase in Lc usually means that the degree of non-uniform distribution of overall stress is higher, which may lead to accelerated fatigue and reduced life. If Lf is high, it indicates that there is significant stress concentration, which will directly affect the overall stress performance of the fastener. A higher Lf means that under the action of breeze vibration, some key unit elements may bear stresses that exceed the design bearing capacity, thereby increasing Lz. A larger Lb indicates that the overall structure of the fastener is more affected by breeze vibration, and Lz will increase, thereby increasing the risk of failure and life reduction.

[0114] Among them, when Lf is high, it means that at least one unit element is under significant stress, which usually leads to an increase in the number of main stress unit elements, thereby increasing Lb. The increase in Lc usually means that the unevenness of the stress distribution of the unit element increases, which may cause some of them to quickly enter the category of main stress unit elements and affect Lb.

[0115] Furthermore, a life diagnosis value is obtained based on the overall stress characteristic value and the fastener life diagnosis curve, including:

[0116] The fastener life diagnostic curve refers to the curve image of the life diagnostic value of the fastener as the overall stress characteristic value changes. Substituting the overall stress characteristic value as the abscissa into the curve to obtain the corresponding ordinate is the life diagnostic value of the fastener. The fastener life diagnostic curve can be determined by, but is not limited to, the empirical formula of the stress-life relationship, which is:

[0117] N=C*σ -k

[0118] Where N is the lifespan, C and k are the material constants fitted by the experiment, and σ is the stress characteristic value.

[0119] Example 2

[0120] In one embodiment of the present disclosure, a transmission line hardware life assessment system based on breeze vibration finite element is provided, comprising:

[0121] A model building module is used to build a finite element model of the fastening metal, determine a sub-element standard of the finite element model of the fastening metal, and sub-element the finite element model of the fastening metal based on the sub-element standard;

[0122] A pre-test module is used to apply the set breeze vibration pre-test scheme to the finite element model of the fastener and obtain a pre-test reference data set; obtain breeze vibration pre-test characteristic values ​​based on the pre-test reference data set, and comprehensively analyze the breeze vibration pre-test characteristic values ​​to obtain pre-test reference results; match the life diagnosis breeze characteristic limits stored in the database based on the pre-test reference results;

[0123] The evaluation module is used to obtain the breeze vibration environment parameters of the fasteners and calculate the breeze vibration environment characteristic values, match the fastener life diagnosis curve based on the life diagnosis breeze characteristic limit and the breeze vibration environment characteristic values; obtain the stress characteristic parameters of each unit element based on the fastener finite element model, obtain the unit element stress characteristic value based on the stress characteristic parameters, and obtain the life diagnosis value of the fastener based on the unit element stress characteristic value and the fastener life diagnosis curve.

[0124] Specifically, each corresponding module described in Example 2 specifically implements the method of each step described in Example 1.

[0125] Example 3

[0126] In one embodiment of the present disclosure, a computer program product is provided, including a computer program, which, when executed by a processor, implements the method for evaluating the life of power transmission line hardware based on breeze vibration finite element.

[0127] Example 4

[0128] In one embodiment of the present disclosure, a non-transitory computer-readable storage medium is provided, wherein the non-transitory computer-readable storage medium is used to store computer instructions. When the computer instructions are executed by a processor, the method for evaluating the life of power transmission line hardware based on breeze vibration finite element is implemented.

[0129] Example 5

[0130] In one embodiment of the present disclosure, an electronic device is provided, including: a processor, a memory, and a computer program; wherein the processor is connected to the memory, the computer program is stored in the memory, and when the electronic device is running, the processor executes the computer program stored in the memory, so that the electronic device executes the transmission line hardware life assessment method based on breeze vibration finite element.

[0131] The present disclosure is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present disclosure. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0132] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process in the computer or other programmable device. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0133] Although the above describes the specific implementation methods of the present disclosure in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the present disclosure. Technical personnel in the relevant field should understand that on the basis of the technical solution of the present disclosure, various modifications or variations that can be made by those skilled in the art without creative work are still within the scope of protection of the present disclosure.

Claims

1. A method for evaluating the life of transmission line hardware based on breeze vibration finite element, characterized in that: include: Constructing a finite element model of the fastening metal, determining a subdivision standard of the finite element model of the fastening metal, and subdividing the finite element model of the fastening metal based on the subdivision standard; Apply the set breeze vibration pre-test scheme to the finite element model of the fastener and obtain the pre-test reference data set; Based on the pre-test reference data set, the breeze vibration pre-test characteristic values ​​are obtained, and the pre-test reference results are obtained by comprehensive analysis of the breeze vibration pre-test characteristic values; Matching life diagnostic breeze characteristic limits stored in a database based on pre-test reference results; Obtain breeze vibration environment parameters of fasteners and calculate breeze vibration environment characteristic values, and match fastener life diagnosis curves based on life diagnosis breeze characteristic limits and breeze vibration environment characteristic values; Based on the finite element model of the fastener, the stress characteristic parameters of each unit element are obtained, the unit element stress characteristic value is obtained based on the stress characteristic parameter, and the life diagnosis value of the fastener is obtained based on the unit element stress characteristic value and the fastener life diagnosis curve.

2. The method for evaluating the life of power transmission line hardware based on breeze vibration finite element as claimed in claim 1, characterized in that: Construct a finite element model of the fastening metal, determine the element division standard of the finite element model of the fastening metal, and divide the finite element model of the fastening metal based on the element division standard, including: Obtain a fastener characteristic description set based on a fastener panoramic model, wherein the fastener characteristic description set includes a fastener independent part description set and a fastener connection part description set, wherein the fastener independent part description set includes the number of chamfers, the maximum radius of curvature, the cross-sectional range, and the volume-surface area ratio, and the fastener connection part description set includes the contact area ratio and the contact point roughness; Calculate the hardware independent description value based on the hardware independent part description set, and calculate the hardware connection description value based on the hardware connection part description set; Obtain the hardware independent description fusion factor and the hardware connection description fusion factor set in the database; Obtain the hardware characteristic description value based on the hardware independent description value, the hardware connection description value, the hardware independent description fusion factor and the hardware connection description fusion factor; The independent description values ​​of hardware and the description values ​​of hardware characteristics are comprehensively analyzed to match the element division standard, and the finite element model of the fastener is divided into several unit elements based on the element division standard.

3. The method for evaluating the life of power transmission line hardware based on breeze vibration finite element as claimed in claim 1, characterized in that: Apply the set breeze vibration pre-test scheme to the finite element model of the fastener and obtain the pre-test reference data set; Acquire breeze vibration pre-test characteristic values ​​based on a pre-test reference data set, and comprehensively analyze the breeze vibration pre-test characteristic values ​​to obtain pre-test reference results, including: acquiring a breeze vibration pre-test scheme stored in a database, applying the breeze vibration pre-test scheme to a fastener having a finite element model to obtain a pre-test reference data set, and calculating breeze vibration pre-test characteristic values ​​based on the pre-test reference data set; Obtain the breeze vibration pre-test standard value stored in the database; The breeze vibration pre-test characteristic value is compared with the breeze vibration pre-test standard value to obtain a pre-test reference result, wherein the pre-test reference result includes whether the wind resistance meets the standard and whether the wind resistance does not meet the standard.

4. The method for evaluating the life of power transmission line hardware based on breeze vibration finite element as claimed in claim 1, characterized in that: Matching the life diagnosis breeze characteristic limit stored in the database based on the pre-test reference result includes: if the pre-test reference result is that the wind resistance capacity does not meet the standard, marking that the wind resistance capacity of the fastener does not meet the standard and sending a maintenance signal to the control terminal; If the pre-test reference result shows that the wind resistance meets the standard, the life diagnosis breeze characteristic limit stored in the database is matched based on the breeze vibration pre-test characteristic value.

5. The method for evaluating the life of power transmission line hardware based on breeze vibration finite element as claimed in claim 1, characterized in that: Obtain the breeze vibration environment parameters of the fasteners and calculate the breeze vibration environment characteristic values. Match the fastener life diagnosis curve based on the life diagnosis breeze characteristic limit and the breeze vibration environment characteristic values, including: Obtain a breeze vibration environment parameter set of the fastener, and obtain a breeze vibration environment parameter correction factor set set in the database; obtain a breeze vibration environment characteristic value based on the breeze vibration environment parameter set and the breeze vibration environment parameter correction factor set; Comprehensive comparison of the life diagnosis breeze characteristic limits and breeze vibration environment characteristic values ​​stored in the database: If the breeze vibration environment characteristic value is greater than or equal to the life diagnosis breeze characteristic limit, the current environment is marked as a dangerous environment; if the breeze vibration environment characteristic value is less than the life diagnosis breeze characteristic limit, the breeze vibration environment characteristic value is stored as a breeze vibration environment designated label, and the breeze vibration environment designated label is compared with the fastener life diagnosis curve corresponding to each breeze vibration environment designated label stored in the database to obtain the fastener life diagnosis curve corresponding to the breeze vibration environment designated label.

6. The method for evaluating the life of power transmission line hardware based on breeze vibration finite element as claimed in claim 1, characterized in that: Based on the finite element model of the fastener, the stress characteristic parameters of each unit element are obtained, the stress characteristic value of the unit element is obtained based on the stress characteristic parameters, and the life diagnosis value of the fastener is obtained based on the stress characteristic value of the unit element and the fastener life diagnosis curve, including: Obtain a stress characteristic parameter set based on any unit element of the finite element model of the fastener, and obtain a stress characteristic comparison value stored in a database; comprehensively analyze the stress characteristic value of the unit element and the stress characteristic comparison value stored in the database to obtain an overall stress characteristic value; The life diagnosis value of the fastener is obtained based on the overall stress characteristic value and the fastener life diagnosis curve.

7. The method for evaluating the life of power transmission line hardware based on breeze vibration finite element as claimed in claim 6, characterized in that: Obtaining an overall stress characteristic value based on the unit element stress characteristic value and the stress characteristic comparison value stored in the database, including: obtaining the unit element stress characteristic value of each unit element; counting and sorting the unit element stress characteristic values ​​of each unit element to obtain a unit element stress characteristic maximum value and a unit element stress characteristic minimum value, wherein the difference between the unit element stress characteristic maximum value and the unit element stress characteristic minimum value is marked as a stress characteristic peak value, and the unit element stress characteristic maximum value is marked as a unit element stress characteristic maximum value; If the unit element stress characteristic value of the unit element is greater than or equal to the stress characteristic comparison value stored in the database, the unit element is marked as the main stress unit element; if the unit element stress characteristic value of the unit element is less than the stress characteristic comparison value stored in the database, the unit element is not marked as the main stress unit element; Count the cumulative volumes of all main stress unit elements, and mark the ratio of the cumulative volume to the volume of the fastening metal body as the main stress coverage ratio; The overall stress characteristic parameters are obtained, wherein the overall stress characteristic parameters include stress characteristic extreme difference, stress characteristic peak value, and main stress coverage ratio.

8. The method for evaluating the life of power transmission line hardware based on breeze vibration finite element as claimed in claim 5, characterized in that: The breeze vibration environment parameter set includes the ambient wind force, the ambient average wind speed and the duration of wind exposure; the breeze vibration environment parameter correction factor set includes the ambient wind force correction factor, the ambient average wind speed correction factor and the duration of wind exposure correction factor.

9. The method for evaluating the life of power transmission line hardware based on breeze vibration finite element as claimed in claim 3, characterized in that: The breeze vibration pre-test plan includes pre-test wind force, pre-test average wind speed and pre-test wind exposure time; the pre-test reference data set includes pre-test vibration response time, pre-test vibration intensity peak, pre-test deformation area and pre-test displacement.

10. A transmission line hardware life assessment system based on breeze vibration finite element, characterized in that: include: A model building module is used to build a finite element model of the fastening metal, determine a sub-element standard of the finite element model of the fastening metal, and sub-element the finite element model of the fastening metal based on the sub-element standard; A pre-test module is used to apply the set breeze vibration pre-test scheme to the finite element model of the fastener and obtain a pre-test reference data set; Based on the pre-test reference data set, the breeze vibration pre-test characteristic values ​​are obtained, and the pre-test reference results are obtained by comprehensive analysis of the breeze vibration pre-test characteristic values; Matching life diagnostic breeze characteristic limits stored in a database based on pre-test reference results; An evaluation module is used to obtain breeze vibration environment parameters of fasteners and calculate breeze vibration environment characteristic values, and match the fastener life diagnosis curve based on the life diagnosis breeze characteristic limit and the breeze vibration environment characteristic value; Based on the finite element model of the fastener, the stress characteristic parameters of each unit element are obtained, the unit element stress characteristic value is obtained based on the stress characteristic parameter, and the life diagnosis value of the fastener is obtained based on the unit element stress characteristic value and the fastener life diagnosis curve.

11. The transmission line hardware life assessment system based on breeze vibration finite element as claimed in claim 10, characterized in that: Construct a finite element model of the fastening metal, determine the element division standard of the finite element model of the fastening metal, and divide the finite element model of the fastening metal based on the element division standard, including: Obtain a fastener characteristic description set based on a fastener panoramic model, wherein the fastener characteristic description set includes a fastener independent part description set and a fastener connection part description set, wherein the fastener independent part description set includes the number of chamfers, the maximum radius of curvature, the cross-sectional range, and the volume-surface area ratio, and the fastener connection part description set includes the contact area ratio and the contact point roughness; Calculate the hardware independent description value based on the hardware independent part description set, and calculate the hardware connection description value based on the hardware connection part description set; Obtain the hardware independent description fusion factor and the hardware connection description fusion factor set in the database; Obtain the hardware characteristic description value based on the hardware independent description value, the hardware connection description value, the hardware independent description fusion factor and the hardware connection description fusion factor; The independent description values ​​of hardware and the description values ​​of hardware characteristics are comprehensively analyzed to match the element division standard, and the finite element model of the fastener is divided into several unit elements based on the element division standard.

12. The transmission line hardware life assessment system based on breeze vibration finite element as claimed in claim 10, characterized in that: Apply the set breeze vibration pre-test scheme to the finite element model of the fastener and obtain the pre-test reference data set; Acquire breeze vibration pre-test characteristic values ​​based on a pre-test reference data set, and comprehensively analyze the breeze vibration pre-test characteristic values ​​to obtain pre-test reference results, including: acquiring a breeze vibration pre-test scheme stored in a database, applying the breeze vibration pre-test scheme to a fastener having a finite element model to obtain a pre-test reference data set, and calculating breeze vibration pre-test characteristic values ​​based on the pre-test reference data set; Obtain the breeze vibration pre-test standard value stored in the database; The breeze vibration pre-test characteristic value is compared with the breeze vibration pre-test standard value to obtain a pre-test reference result, wherein the pre-test reference result includes whether the wind resistance meets the standard and whether the wind resistance does not meet the standard.

13. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the method for evaluating the life of transmission line fittings based on breeze vibration finite element as described in any one of claims 1 to 9 is implemented.

14. A non-transitory computer-readable storage medium, characterized in that: The non-transitory computer-readable storage medium is used to store computer instructions. When the computer instructions are executed by the processor, the method for evaluating the life of transmission line hardware based on breeze vibration finite element as described in any one of claims 1 to 9 is implemented.

15. An electronic device, characterized in that: include: A processor, a memory and a computer program; wherein the processor is connected to the memory, the computer program is stored in the memory, and when the electronic device is running, the processor executes the computer program stored in the memory so that the electronic device executes the method for life assessment of power line hardware based on breeze vibration finite element as described in any one of claims 1 to 9.

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