A method, device, equipment and storage medium for anti-icing risk assessment of transmission towers

Abstract

The present invention discloses a method, device, equipment and storage medium for anti-icing risk assessment of transmission towers, which are used to solve the technical problems of low accuracy and poor effect in the anti-icing capacity assessment of existing transmission tower assessment methods. The present invention includes: obtaining a numerical simulation model of a transmission tower; calculating the ice-covered load of the transmission tower under a preset ice thickness according to the numerical simulation model; calculating a stress response result according to the ice-covered load; calculating a stress ratio of each member according to the stress response result; determining a target member according to the stress ratio; obtaining the actual stress and strain of the target member in real time; and judging the anti-icing risk of the target member according to the actual stress and strain.

Description

Technical Field

[0001] The present invention relates to the technical field of transmission towers, and particularly to a method, device, equipment and storage medium for anti-icing risk assessment of transmission towers. Background Art

[0002] Icing is a serious threat to the operation of transmission lines in winter. In low-temperature rain and snow weather, the relative humidity is high, and a large amount of water vapor is easily condensed on the surface of transmission lines to form ice, causing ice disasters in the power system.

[0003] After a large amount of ice covers the conductors and components on the transmission tower, the weight of the ice will increase, bringing a huge load to the transmission tower. If the ice load exceeds the design bearing capacity of the transmission tower, it may cause the transmission tower to collapse. At the same time, icing will bring additional loads to the structural components of the transmission tower and may cause problems such as structural loosening, corrosion or cracking. These structural problems will weaken the stability of the transmission tower and increase the risk of collapse. Under the action of strong winds, the ice-covered transmission lines are prone to oscillation, which will also cause the collapse of the transmission lines. Therefore, the operating state of the transmission lines should be monitored in real time so that appropriate countermeasures can be taken in time to reduce the harm when bad weather occurs.

[0004] At present, the research methods for the disaster resistance ability of transmission tower structures mainly include structural tests and numerical simulations. The structural test method is to evaluate the strength and stability of the transmission tower by measuring the load-displacement curve of the transmission tower under the action of equivalent icing loads. This method studies the real structure, and the results are highly reliable, but it also requires a high cost. The numerical simulation method is to use computer software for numerical simulation. By establishing an accurate numerical simulation calculation model, the stress condition and deformation of the transmission tower under icing are analyzed, so as to evaluate the anti-overturning ability of the transmission tower. This method can take into account complex engineering characteristics and environmental conditions, can provide valuable references for engineering design, and can also save costs significantly. However, most of the existing evaluation methods only analyze the structure based on numerical simulation or combine tests for data verification, and cannot analyze the transmission tower in real time in combination with real-time scenarios, resulting in low accuracy and poor effect of anti-icing ability evaluation. Summary of the Invention

[0005] The present invention provides a method, device, equipment and storage medium for anti-icing risk assessment of transmission towers, which are used to solve the technical problems of low accuracy and poor effect of the existing anti-icing ability evaluation methods for transmission towers.

[0006] The present invention provides a method for anti-icing risk assessment of transmission towers, and the transmission tower has a plurality of members; the method includes:

[0007] Obtain the numerical simulation model of the transmission tower;

[0008] Calculate the ice - covering load of the transmission tower under the preset ice thickness according to the numerical simulation model;

[0009] Calculate the stress response result according to the ice - covering load;

[0010] Calculate the stress ratio of each member according to the stress response result;

[0011] Determine the target members according to the stress ratio;

[0012] Obtain the actual stress and strain of the target members in real time;

[0013] Judge the ice - resistance risk of the target members according to the actual stress and strain.

[0014] Optionally, the step of calculating the ice - covering load of the transmission tower under the preset ice thickness according to the numerical simulation model includes:

[0015] Obtain the transmission - tower parameters from the numerical simulation model;

[0016] Obtain the standard value of the ice load;

[0017] Calculate the ice - covering load of each member by using the transmission - tower parameters, the standard value of the ice load and the preset ice thickness.

[0018] Optionally, the step of calculating the stress ratio of each member according to the stress response result includes:

[0019] Obtain the allowable stress of each member;

[0020] Calculate the stress ratio of each member according to the stress response result and the allowable stress.

[0021] Optionally, the step of judging the ice - resistance risk of the target members according to the actual stress and strain includes:

[0022] Calculate the service stress ratio according to the actual stress and strain;

[0023] Judge the ice - resistance risk of the target members according to the service stress ratio.

[0024] The present invention also provides a device for evaluating the ice - resistance risk of a transmission tower. The transmission tower has a plurality of members. The device includes:

[0025] A numerical - simulation - model acquisition module, configured to acquire the numerical simulation model of the transmission tower;

[0026] An ice - covering - load calculation module, configured to calculate the ice - covering load of the transmission tower under the preset ice thickness according to the numerical simulation model;

[0027] A stress response result calculation module, configured to calculate a stress response result according to the ice load;

[0028] A stress ratio calculation module, configured to calculate the stress ratio of each member according to the stress response result;

[0029] A target member determination module, configured to determine a target member according to the stress ratio;

[0030] An actual stress and strain acquisition module, configured to acquire the actual stress and strain of the target member in real time;

[0031] An ice resistance risk discrimination module, configured to discriminate the ice resistance risk of the target member according to the actual stress and strain.

[0032] Optionally, the ice load calculation module includes:

[0033] A transmission tower parameter acquisition sub-module, configured to acquire transmission tower parameters from the numerical simulation model;

[0034] An ice load standard value acquisition sub-module, configured to acquire the ice load standard value;

[0035] An ice load calculation sub-module, configured to calculate the ice load of each member by using the transmission tower parameters, the ice load standard value, and a preset ice thickness.

[0036] Optionally, the stress ratio calculation module includes:

[0037] An allowable stress acquisition sub-module, configured to acquire the allowable stress of each member;

[0038] A stress ratio calculation sub-module, configured to calculate the stress ratio of each member according to the stress response result and the allowable stress.

[0039] Optionally, the ice resistance risk discrimination module includes:

[0040] A service stress ratio calculation sub-module, configured to calculate a service stress ratio according to the actual stress and strain;

[0041] An ice resistance risk discrimination sub-module, configured to discriminate the ice resistance risk of the target member according to the service stress ratio.

[0042] The present invention further provides an electronic device, which includes a processor and a memory:

[0043] The memory is configured to store program code and transmit the program code to the processor;

[0044] The processor is configured to execute the transmission tower ice resistance risk assessment method according to any one of the above instructions in the program code.

[0045] The present invention also provides a computer-readable storage medium for storing program codes for executing the transmission tower anti-icing risk assessment method described in any one of the above.

[0046] As can be seen from the above technical solutions, the present invention has the following advantages: The present invention provides a transmission tower anti-icing risk assessment method, which specifically includes: obtaining a numerical simulation model of a transmission tower; calculating the ice-covered load and stress response results of the transmission tower under a preset ice thickness according to the numerical simulation model; calculating the stress ratio of each member according to the stress response results; determining the target member according to the stress ratio; obtaining the actual stress and strain of the target member in real time; and determining the anti-icing risk of the target member according to the actual stress and strain. By combining the numerical simulation of the transmission tower with the actual monitoring data of the transmission tower for anti-icing capacity assessment, the present invention improves the real-time performance of the anti-icing capacity assessment of the transmission tower, can timely detect abnormalities of the transmission tower, and improves the accuracy of the anti-icing capacity assessment. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0048] Figure 1 It is a flowchart of the steps of a transmission tower anti-icing risk assessment method provided by an embodiment of the present invention;

[0049] Figure 2 It is a single-tower finite element analysis model of a 220V cat-head straight tower;

[0050] Figure 3 It is a flowchart of the steps of a transmission tower anti-icing risk assessment method provided by another embodiment of the present invention;

[0051] Figure 4 It is a schematic structural diagram of a transmission tower on-line monitoring system;

[0052] Figure 5 It is a structural block diagram of a transmission tower anti-icing risk assessment device provided by an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0053] Embodiments of the present invention provide a transmission tower anti-icing risk assessment method, device, equipment and storage medium, which are used to solve the technical problem that the existing transmission tower assessment method has low accuracy and poor effect in anti-icing capacity assessment.

[0054] In order to make the objectives, features, and advantages of the present invention more obvious and understandable, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the embodiments described below are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0055] Please refer to Figure 1 , Figure 1 which is a flowchart of the steps of a method for evaluating the anti-icing risk of a transmission tower provided by an embodiment of the present invention.

[0056] A method for evaluating the anti-icing risk of a transmission tower provided by the present invention, wherein the transmission tower has multiple members; the method may specifically include the following steps:

[0057] Step 101, obtain a numerical simulation model of the transmission tower;

[0058] The transmission tower is the support point of the overhead line. If one circuit is erected on the transmission tower, it is a single-circuit transmission tower; if two circuits are erected on the transmission tower, it is a double-circuit transmission tower. A single circuit means a circuit with one power supply for one load; a double circuit means a circuit with two power supplies for one load.

[0059] In the embodiments of the present invention, a numerical simulation model of the transmission tower can be established according to design software or finite element software. First, the lattice frame of the transmission tower can be established according to the ANSYS command stream or the CAD three-dimensional modeling method; the geometric model of the transmission tower is imported into the finite element analysis software (such as ANSYS, ABAQUS, etc.); in the finite element software, the element attributes, material attributes, and section attributes of the structural members of the transmission tower can be assigned.

[0060] When assigning the element attributes of the transmission tower members, the main members of the transmission tower are simulated using three-dimensional linear beam elements with two nodes. In the ANSYS software, these two elements can be specified as BEAM188 beam elements and LINK180 rod elements; in the ABAQUS software, they can be specified as B31 beam elements and T3D2 truss elements.

[0061] Since the transmission tower members are usually angle steel or steel pipes, when assigning the material attributes, the elastic modulus and Poisson's ratio both adopt the material parameters of steel. When inputting the stress-strain relationship of the transmission tower steel, an elastoplastic model is adopted, and usually a bilinear isotropic hardening model or the true stress-strain relationship of steel based on material property tests can be selected.

[0062] When assigning cross-sectional properties to the members of the transmission tower, since beam elements are used to simulate the main members, the beam element cross-sections are selected according to the construction drawings of the transmission tower, and the corresponding dimensions are input. After defining the dimensions, the direction of the beam elements needs to be adjusted to make it the same as the orientation of the actual angle steel of the main members of the transmission tower; since truss members and auxiliary members are simulated using bar elements, when defining the cross-section, first calculate their cross-sectional areas according to the member types in the construction drawings and input the values into the finite element software.

[0063] During the modeling process, the initial geometric imperfections of the transmission tower are considered. The initial structural imperfections are regarded as a random field, and the overall initial geometric imperfection mode of the structure can be adopted according to the lowest-order overall buckling mode. The maximum value of the representative value of the overall initial geometric imperfections of the frame and bracing structure can be taken as H / 250, where H is the total height of the structure. According to the height of the transmission tower, the consistent buckling mode method is used to simulate the initial geometric imperfections of the transmission tower.

[0064] Figure 2 It is a finite element analysis model of a single 220V cat-head straight tower.

[0065] Step 102: Calculate the ice coating load of the transmission tower under the preset ice thickness according to the numerical simulation model;

[0066] Step 103: Calculate the stress response results according to the ice coating load;

[0067] Ice coating load: The additional load caused by ice coating on any member of the line.

[0068] Stress response results: The stress of the member under the ice coating load.

[0069] In the embodiment of the present invention, the ice coating load and the stress response results of the transmission tower under the preset ice thickness can be calculated according to the numerical simulation model.

[0070] Step 104: Calculate the stress ratio of each member according to the stress response results;

[0071] The stress ratio of a member refers to the ratio of the stress borne by the member to the allowable stress of the member; it is used to reflect the stress bearing situation of the member.

[0072] After obtaining the stress response results, the stress ratio of the member can be calculated according to the stress response results.

[0073] Step 105: Determine the target members according to the stress ratio;

[0074] After determining the stress ratio, the target members with greater risks can be determined according to the stress ratio.

[0075] Step 106: Real-time obtain the actual stress and strain of the target members;

[0076] Step 107: Determine the anti-icing risk of the target member according to the actual stress and strain.

[0077] In the embodiment of the present invention, the stress and strain of the target member can be continuously monitored during the icing period through the on-line monitoring system of the transmission tower, so as to determine whether the corresponding target member reaches the bearing limit according to the actual stress and strain, and feedback the abnormality in time.

[0078] By combining the numerical simulation of the transmission tower with the actual monitoring data of the transmission tower, the present invention evaluates the anti-icing ability, thereby improving the real-time performance of the anti-icing ability evaluation of the transmission tower, being able to detect the abnormality of the transmission tower in time, and improving the accuracy of the anti-icing ability evaluation.

[0079] Please refer to Figure 3 , Figure 3 which is the step flow chart of the transmission tower anti-icing risk assessment method provided by another embodiment of the present invention. Specifically, it may include the following steps:

[0080] Step 301: Obtain the numerical simulation model of the transmission tower;

[0081] Step 302: Obtain the transmission tower parameters from the numerical simulation model;

[0082] Step 303: Obtain the standard value of the ice load;

[0083] Step 304: Calculate the ice load of each member by using the transmission tower parameters, the standard value of the ice load and the preset ice thickness;

[0084] In the embodiment of the present invention, the ice load can be calculated by the following formula:

[0085] I k =n s ·g·ρ1·c·π·(c + d1)·L v

[0086] where, I k is the standard value of the ice load (kN), n s is the number of conductor splits, taking 1.0 for the ground wire, g is the acceleration of gravity, taking 9.80665 m / s2, ρ1 is the ice density, taking 0.9 g / cm3, c is the designed ice thickness (m), d1 is the outer diameter of the ground wire or a single conductor (m), and L v is the vertical span of the tower in the designed icing condition (m). For the combined value of the ice loads of the conductor and the ground wire, 100% of the standard value of the ice load is taken in the case of broken wire or longitudinal unbalanced tension of the split conductor, and 75% of the standard value of the ice load is taken in the case of uneven icing.

[0087] Step 305: Calculate the stress response result according to the ice load;

[0088] In the embodiments of the present invention, the ice coating load can be applied together with the line load in the form of nodal loads at the line suspension points, and based on the elastoplastic equivalent static analysis, the stress response results of each member of the transmission tower are extracted.

[0089] Step 306, calculate the stress ratio of each member according to the stress response results;

[0090] In one example, step 306 may include the following sub-steps:

[0091] S61, obtain the allowable stress of each member;

[0092] S62, calculate the stress ratio of each member according to the stress response results and the allowable stress.

[0093] In a specific implementation, when evaluating the ice resistance of the transmission tower, the stress ratio ξ of the steel can be selected as the control standard, and the calculation formula of the steel stress ratio is:

[0094] ξ = σ' / σ

[0095] Wherein, σ' is the design stress of the steel of the transmission tower, and σ is the allowable stress of the steel of the transmission tower.

[0096] Step 307, determine the target members according to the stress ratio;

[0097] According to the stress ratio results of each member of the transmission tower, sort the stress ratios of each member, and select the five transmission tower members with the largest ratio as the target members.

[0098] Step 308, obtain the actual stress and strain of the target members in real time;

[0099] In the embodiments of the present invention, stress and strain monitoring devices can be arranged on the target members, and based on the on-line monitoring system of the transmission tower, the stress and strain of the target members are continuously monitored during the ice coating period. Among them, the on-line monitoring system of the transmission tower is as Figure 4 shown, and is composed of a fiber Bragg grating strain sensor S21, a control system S22, a communication module S23, and an on-line monitoring system software platform S24.

[0100] Input the reflected optical signal of the fiber Bragg grating strain sensor S21 into the control system S22, and perform algorithm demodulation in the control system S22. The control system S22 includes a programmable logic controller S221, a circulator S222, an AD acquisition card S223, a field programmable gate array (FPGA) S224, a controller S225, etc.

[0101] The signal is transmitted to the online monitoring system software platform S24 through the communication module S23. The communication module S23 can adopt wireless communication, and this communication is based on the broadband network S231 and the mobile network S232. Functions such as real-time signal processing S241, data storage S242, real-time data display S243, historical data viewing S244, data management S245, and task configuration S246 are implemented in the online monitoring system software platform S24. According to the mapping relationship between the wavelength of the fiber Bragg grating sensor and the strain of the transmission tower, the real-time strain value corresponding to each sensing measurement point is calculated. This mapping relationship needs to be established in advance according to the sensor parameters, so as to monitor the stress and strain of the transmission tower in real time.

[0102] Step 309: Determine the anti-icing risk of the target member according to the actual stress and strain.

[0103] In one example, step 309 may include the following sub-steps:

[0104] S91: Calculate the allowable stress ratio according to the actual stress and strain;

[0105] S92: Determine the anti-icing risk of the target member according to the allowable stress ratio.

[0106] In a specific implementation, the allowable stress ratio of the target member of the transmission tower can be calculated according to the stress and strain collected and calculated by the transmission tower online monitoring system, and the safety of the transmission tower structure can be evaluated in real time. When the allowable stress ratio of the target member of the transmission tower exceeds 105%, it is determined that the transmission tower member is in a state with a very high risk of damage.

[0107] The present invention combines the numerical simulation of the transmission tower with the actual monitoring data of the transmission tower to evaluate the anti-icing ability, thereby improving the real-time performance of the anti-icing ability evaluation of the transmission tower, enabling timely detection of transmission tower anomalies, and improving the accuracy of the anti-icing ability evaluation.

[0108] Please refer to Figure 5 , Figure 5 which is the structural block diagram of a transmission tower anti-icing risk assessment device provided by an embodiment of the present invention.

[0109] An embodiment of the present invention provides a transmission tower anti-icing risk assessment device. The transmission tower has multiple members; the device includes:

[0110] A numerical simulation model acquisition module 501, configured to acquire a numerical simulation model of the transmission tower;

[0111] An ice load calculation module 502, configured to calculate the ice load of the transmission tower under a preset ice thickness according to the numerical simulation model;

[0112] A stress response result calculation module 503, configured to calculate the stress response result according to the ice load;

[0113] The stress ratio calculation module 504 is used to calculate the stress ratio of each member according to the stress response result;

[0114] The target member determination module 505 is used to determine the target member according to the stress ratio;

[0115] The actual stress and strain acquisition module 506 is used to acquire the actual stress and strain of the target member in real time;

[0116] The anti-icing risk discrimination module 507 is used to discriminate the anti-icing risk of the target member according to the actual stress and strain.

[0117] In an embodiment of the present invention, the ice load calculation module 502 includes:

[0118] The transmission tower parameter acquisition sub-module is used to acquire the transmission tower parameters from the numerical simulation model;

[0119] The ice load standard value acquisition sub-module is used to acquire the ice load standard value;

[0120] The ice load calculation sub-module is used to calculate the ice load of each member by using the transmission tower parameters, the ice load standard value and the preset ice thickness.

[0121] In an embodiment of the present invention, the stress ratio calculation module 504 includes:

[0122] The allowable stress acquisition sub-module is used to acquire the allowable stress of each member;

[0123] The stress ratio calculation sub-module is used to calculate the stress ratio of each member according to the stress response result and the allowable stress.

[0124] In an embodiment of the present invention, the anti-icing risk discrimination module 507 includes:

[0125] The service stress ratio calculation sub-module is used to calculate the service stress ratio according to the actual stress and strain;

[0126] The anti-icing risk discrimination sub-module is used to discriminate the anti-icing risk of the target member according to the service stress ratio.

[0127] An embodiment of the present invention further provides an electronic device, which includes a processor and a memory:

[0128] The memory is used to store program code and transmit the program code to the processor;

[0129] The processor is used to execute the transmission tower anti-icing risk assessment method according to the instructions in the program code.

[0130] An embodiment of the present invention further provides a computer-readable storage medium, which is used to store program codes for executing the transmission tower anti-icing risk assessment method according to the embodiment of the present invention.

[0131] Those skilled in the art can clearly understand that for the convenience and brevity of description, the specific working processes of the above-described systems, devices, and units can refer to the corresponding processes in the foregoing method embodiments, and will not be described herein again.

[0132] Each embodiment in this specification is described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. The same or similar parts among the various embodiments can be referred to each other.

[0133] Those skilled in the art should understand that the embodiments of the present invention can be provided as a method, a device, or a computer program product. Therefore, the embodiments of the present invention can take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the embodiments of the present invention can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk memories, CD-ROMs, optical memories, etc.) containing computer-usable program codes.

[0134] The embodiments of the present invention are described with reference to the flowcharts and / or block diagrams of methods, terminal devices (systems), and computer program products according to the embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, and the combination of processes and / or blocks in the flowchart and / or block diagram, can be realized by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing terminal devices to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing terminal devices generate a machine for realizing the functions specified in Figure 1 one process or multiple processes and / or blocks Figure 1 one block or multiple blocks.

[0135] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing terminal device to work in a specific manner, so that the instructions stored in the computer-readable memory generate a manufactured article including an instruction device, and the instruction device realizes the functions specified in Figure 1 one process or multiple processes and / or blocks Figure 1 one block or multiple blocks.

[0136] These computer program instructions can also be loaded onto a computer or other programmable data processing terminal device, so that a series of operation steps are executed on the computer or other programmable terminal device to generate a computer-implemented process. Thus, the instructions executed on the computer or other programmable terminal device provide steps for implementing the functions specified in one process Figure 1 one process or multiple processes and / or blocks Figure 1 steps of the functions specified in one block or multiple blocks.

[0137] Although the preferred embodiments of the embodiments of the present invention have been described, those skilled in the art can make additional changes and modifications once they learn the basic creative concepts. Therefore, the appended claims are intended to be construed to include the preferred embodiments and all changes and modifications falling within the scope of the embodiments of the present invention.

[0138] Finally, it should also be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or terminal device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or terminal device. Without further limitation, an element defined by the statement "comprising one..." does not exclude the presence of additional identical elements in the process, method, article or terminal device comprising the said element.

[0139] The above is the description. The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. And these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A transmission tower anti-icing risk assessment method, characterized in that: The transmission tower has a plurality of rods; the method comprises: Obtain a numerical simulation model of a transmission tower; Calculating the ice load of the transmission tower under a preset ice thickness according to the numerical simulation model; Calculating stress response results according to the ice load; Calculating the stress ratio of each of the rods according to the stress response result; determining a target rod according to the stress ratio; Acquiring the actual stress and strain of the target rod in real time; Determining the ice resistance risk of the target rod according to the actual stress and strain; Wherein, the step of calculating the stress ratio of each of the rods according to the stress response result comprises: Obtain the allowable stress of each member; Calculating the stress ratio of each rod according to the stress response result and the allowable stress; The calculation formula of the stress ratio is: ξ=σ' / σ Among them, σ' is the design stress of the transmission tower steel, and σ is the allowable stress of the transmission tower steel; The step of determining the target rod according to the stress ratio is specifically as follows: according to the stress ratio results of the rods of the transmission tower, the stress ratios of the rods are sorted, and the five transmission tower rods with the largest ratios are selected as the target rods; Wherein, the step of determining the ice resistance risk of the target rod according to the actual stress and strain includes: Calculate and use stress ratio according to said actual stress-strain; The ice resistance risk of the target pole is determined according to the service stress ratio. When the service stress ratio of the target pole of the transmission tower exceeds 105%, it is determined that the pole of the transmission tower is at a very high risk of damage.

2. The method according to claim 1, characterized in that The step of calculating the ice load of the transmission tower under a preset ice thickness according to the numerical simulation model comprises: Acquiring transmission tower parameters from the numerical simulation model; Get the standard value of ice load; The ice load of each rod is calculated using the transmission tower parameters, the ice load standard value and the preset ice thickness.

3. A transmission tower anti-icing risk assessment device, characterized in that: The transmission tower has a plurality of rods; the device comprises: A numerical simulation model acquisition module, used to acquire a numerical simulation model of a transmission tower; An ice load calculation module, used for calculating the ice load of the transmission tower under a preset ice thickness according to the numerical simulation model; A stress response result calculation module, used for calculating the stress response result according to the ice load; A stress ratio calculation module, used for calculating the stress ratio of each of the rods according to the stress response result; A target rod determining module, used for determining the target rod according to the stress ratio; An actual stress and strain acquisition module, used for acquiring the actual stress and strain of the target rod in real time; An anti-icing risk determination module, used for determining the anti-icing risk of the target rod according to the actual stress and strain; Wherein, the stress ratio calculation module includes: The allowable stress acquisition submodule is used to obtain the allowable stress of each member; A stress ratio calculation submodule, used for calculating the stress ratio of each rod according to the stress response result and the allowable stress; The calculation formula of the stress ratio is: ξ=σ' / σ Among them, σ' is the design stress of the transmission tower steel, and σ is the allowable stress of the transmission tower steel; The target rod determination module is specifically used to: sort the stress ratios of the rods according to the stress ratio results of the transmission tower rods, and select the five transmission tower rods with the largest ratios as the target rods; Wherein, the anti-icing risk identification module includes: A stress ratio calculation submodule is used to calculate the stress ratio according to the actual stress strain; The ice resistance risk determination submodule is used to determine the ice resistance risk of the target pole according to the service stress ratio. When the service stress ratio of the target pole of the transmission tower exceeds 105%, it is determined that the transmission tower pole is in a state of great risk of damage.

4. The device according to claim 3, characterized in that The ice load calculation module comprises: A transmission tower parameter acquisition submodule, used to acquire transmission tower parameters from the numerical simulation model; The ice load standard value acquisition submodule is used to obtain the ice load standard value; The ice load calculation submodule is used to calculate the ice load of each rod by using the transmission tower parameters, the ice load standard value and the preset ice thickness.

5. An electronic device, characterized in that: The device comprises a processor and a memory: The memory is used to store program codes and transmit the program codes to the processor; The processor is used to execute the transmission tower anti-icing risk assessment method according to any one of claims 1-2 according to the instructions in the program code.

6. A computer-readable storage medium, characterized in that: The computer-readable storage medium is used to store program code, and the program code is used to execute the transmission tower anti-icing risk assessment method according to any one of claims 1-2.

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