Distribution network stay wire manufacturing method and system

Abstract

The invention discloses a distribution network stay wire manufacturing method and system, and relates to the technical field of power distribution networks, and the method comprises the steps: obtaining the geometric parameters and environmental parameters of an electric pole, and calculating the length and bending angle of a steel strand for stay wire manufacturing according to the geometric parameters and environmental parameters; the steel strand raw material is cut according to the length of the steel strand, the cut steel strand is bent and shaped according to the bending angle, and the steel strand subjected to bending and shaping is assembled; after the assembled steel strands are installed and stay wires are formed, the tension deviation of the stay wires is calculated, and the tension of the stay wires is adjusted according to the tension deviation; testing the stability of the stay wire; the tension and corrosion degree of the stay wire and the inclination angle of the electric pole are monitored in real time, and early warning analysis is conducted on the safety of the stay wire. The problems that the existing stay wire manufacturing precision and efficiency are low, the potential risk of the stay wire cannot be monitored in time, the service life of the stay wire is short, and the fault probability of a distribution network is high are solved.

Description

Technical Field

[0001] This invention relates to the field of power distribution network technology, and in particular to a method and system for manufacturing power distribution network guy wires. Background Technology

[0002] Distribution network guy wires are crucial structures in power distribution network systems used to stabilize utility poles. They typically consist of steel strands connecting the top of the pole to underground anchor points, using inclined supports to balance conductor tension and prevent pole tilting or collapse. Currently, distribution network guy wire fabrication relies heavily on engineers' empirical formulas for design parameters, involving manual excavation of anchor points and installation of guy wire reels. Strength is verified only through simple tensile tests after installation, and maintenance depends on manual inspection of the appearance. This method of guy wire fabrication has the following drawbacks: the design does not adequately consider the impact of soil type (e.g., clay corrosivity, sandy looseness) and ambient temperature on guy wire tension, resulting in insufficient structural stability; manual construction easily leads to anchor point positioning deviations and improper installation, affecting the balance of force on the guy wire; the lack of real-time monitoring methods makes it impossible to dynamically track key parameters such as steel strand corrosion and tension changes, resulting in delayed fault detection; furthermore, the construction process and maintenance records lack digital traceability, making it difficult to accurately locate quality problems, leading to high overall maintenance costs and low efficiency. Summary of the Invention

[0003] This invention provides a method and system for manufacturing distribution network guy wires, which solves the problems of low precision and efficiency in existing guy wire manufacturing, inability to monitor potential risks of guy wires in a timely manner, resulting in short service life of guy wires and thus a high probability of distribution network failure.

[0004] In view of the above, the first aspect of this application provides a method for making distribution network guy wires, the method comprising:

[0005] S1. Obtain the geometric parameter data of the pole and the environmental parameter data of the environment where the pole is located, and calculate the length and bending angle of the steel strand used for guy wire production based on the geometric parameter data and the environmental parameter data;

[0006] S2. Cut the raw steel strand according to the length of the steel strand, bend and shape the cut steel strand according to the bending angle, and assemble the steel strand that has been bent and shaped.

[0007] S3. After the assembled steel strand is installed and a pull wire is formed, the tension deviation of the pull wire is calculated, and the tension of the pull wire is adjusted according to the tension deviation.

[0008] S4. Perform a stability test on the pull wire. The stability test includes a preload test, a graded load test, and an overload test. Determine the result of the stability test based on the results of the preload test, the graded load test, and the overload test.

[0009] S5. Monitor the tension and corrosion level of the guy wire and the tilt angle of the pole in real time, and conduct early warning analysis on the safety of the guy wire based on the tension, corrosion level, and tilt angle.

[0010] Optionally, calculating the length and bending angle of the steel strand used for wire drawing based on the geometric parameter data and the environmental parameter data includes:

[0011] Based on the environmental parameter data, an environmental compensation coefficient is determined for calculating the length of the steel strand and the bending angle. The environmental compensation coefficient includes: soil compensation coefficient, temperature compensation coefficient, and humidity compensation coefficient.

[0012] Based on the calculation formulas for the length of the steel strand and the bending angle, the length of the steel strand used for guy wire production and the bending angle are calculated according to the geometric parameter data and the environmental compensation coefficient. The geometric parameter data includes: the height of the pole and the horizontal distance between the preset guy wire anchor point and the bottom of the pole.

[0013] The formula for calculating the length of the steel strand is:

[0014] ;

[0015] The formula for calculating the bending angle is:

[0016] ;

[0017] In the formula, The length of the steel strand. For the bending angle, The height of the pole. The horizontal distance between the preset guy wire anchor point and the bottom of the pole, Soil compensation coefficient; This is the temperature compensation coefficient; This is the humidity compensation coefficient.

[0018] Optionally, the step of determining environmental compensation coefficients for calculating the length of the steel strand and the bending angle based on the environmental parameter data, wherein the environmental compensation coefficients include: soil compensation coefficient, temperature compensation coefficient, and humidity compensation coefficient, including:

[0019] The soil is classified according to the environmental parameter data, and the value of the soil compensation coefficient is determined according to the soil classification results. The environmental parameter data includes: ambient temperature, ambient relative humidity, soil relative humidity and soil resistivity.

[0020] The temperature compensation coefficient is calculated based on the formula for calculating the temperature compensation coefficient and the ambient temperature.

[0021] ;

[0022] in, ;

[0023] In the formula, This is the temperature compensation coefficient. is the linear thermal expansion coefficient of steel. The ambient temperature is... The length of the steel strand foundation. Reserve the length for the steel strand;

[0024] The relative humidity of the environment is compared with a preset threshold, and the value of the humidity compensation coefficient is determined based on the comparison result.

[0025] Optionally, the step of cutting the steel strand raw material according to the length of the steel strand includes:

[0026] S21. Calculate the clamping force required by the clamping mechanism to clamp the steel strand raw material. After clamping the steel strand raw material according to the clamping force, cut the steel strand raw material according to the length of the steel strand to obtain the steel strand to be processed.

[0027] S22. Measure the steel strand to be processed to obtain the measured length of the steel strand, and determine whether the measured length of the steel strand is within the preset length range of the steel strand. If not, issue an alarm and return to step S21 to re-trim until it meets the preset length range.

[0028] Optionally, the step of bending and shaping the cut steel strand according to the bending angle, and assembling the bent steel strand, includes:

[0029] S23. The steel strand to be processed is bent and shaped according to the bending angle to obtain the first steel strand after bending and shaping.

[0030] S24. Calculate the angle error and radius error between the first steel strand and the preset steel strand bending model. Determine whether the first steel strand meets the bending requirements based on the angle error and the radius error. If not, issue an alarm and return to step S23. If yes, proceed to step S25.

[0031] S25. Assemble the bent portion of the first steel strand with the wedge clamp to obtain the second steel strand after assembly.

[0032] Optionally, calculating the tension deviation of the draw wire and adjusting the tension of the draw wire based on the tension deviation includes:

[0033] The tension of the draw wire is adjusted using a tension adjusting device, and the tension of the draw wire is mechanically adjusted by adjusting the screw of the tension adjusting device. Adjustments are made to the mechanical adjustment amount of the screw. Calculate as follows:

[0034] ;

[0035] ;

[0036] In the formula, Indicates tension deviation; This indicates the preset tension of the drawstring; This represents the initial tension in the wire; This indicates the elastic modulus of the steel strand; This represents the cross-sectional area of ​​the steel strand; This indicates the initial length of the adjustable portion of the screw itself;

[0037] like If the value is greater than 0, the tension of the pull wire is determined to be insufficient. The mechanical adjustment amount of the screw is then calculated. Adjust the screw in the direction of shortening;

[0038] like If the value is less than 0, the tension of the wire is considered too high. The mechanical adjustment amount of the screw is then calculated accordingly. Adjust the screw in the direction of extension.

[0039] Optionally, the stability test performed on the pull wire includes a pre-loading test, a graded loading test, and an overload test. The result of the stability test is determined based on the results of the pre-loading test, the graded loading test, and the overload test, including:

[0040] An electro-hydraulic servo actuator is used to apply a load to the guy wire. Two positioning clamps are set at the middle position of the guy wire, with a preset distance between the two positioning clamps. The distance between the two positioning clamps is the gauge length, and a strain gauge is set between the two positioning clamps. An inclination sensor is used to monitor the tilt angle of the pole in real time, with the initial angle as 0.

[0041] The preload test includes:

[0042] The electro-hydraulic servo actuator is controlled to load the first preset load at a first preset loading rate, and then unloaded after maintaining the load for a first preset time, thereby obtaining the first tilt angle of the pole and the residual deformation rate of the gauge length segment.

[0043] If the first tilt angle and the residual deformation rate are both not greater than their respective preset thresholds, the preloading test is deemed to be qualified; otherwise, it is deemed to be unqualified.

[0044] The graded loading test includes:

[0045] The electro-hydraulic servo actuator is controlled to apply multiple sequentially increasing test loads at a second preset loading rate. After each load is held for a second preset time, it is unloaded. The strain is measured and the stress is calculated using the strain gauge. The measured strain and stress are then linearly regressed to obtain the linearity.

[0046] If the linearity is not lower than the preset linearity threshold, the graded loading test is deemed qualified; otherwise, it is deemed unqualified.

[0047] The overload test includes:

[0048] The electro-hydraulic servo actuator is controlled to load an overload exceeding the preset tension of the tension wire at a third preset loading rate, and then unloaded after maintaining the load for a third preset time, thereby obtaining the second tilt angle of the pole and the plastic deformation rate of the gauge length section.

[0049] If the second tilt angle and the plastic deformation rate are both not greater than their respective preset thresholds, the overload test is deemed to be qualified; otherwise, it is deemed to be unqualified.

[0050] If the preloading test, the hierarchical loading test, and the overloading test are all qualified, the stability test is deemed to have passed; otherwise, it is deemed to have failed, and step S3 is re-executed.

[0051] Optionally, step S5 includes:

[0052] The tension of the pull wire is periodically collected, and the rate of change of the pull wire tension is calculated based on the tension of the pull wire.

[0053] The location of rust and the remaining wall thickness of rust on the surface of the pull wire are obtained periodically, and the rust rate is calculated based on the location of rust and the remaining wall thickness of rust.

[0054] The tilt angle of the top of the pole is collected periodically, and the rate of change of the tilt angle is calculated based on the tilt angle.

[0055] If the rate of change of tension of the pull wire, the rate of corrosion, and the rate of change of tilt angle all do not exceed their respective preset safety thresholds, the safety of the pull wire is deemed qualified; otherwise, it is deemed unqualified, and a graded early warning analysis is performed.

[0056] Optionally, the tiered early warning analysis includes:

[0057] Based on the number of conditions among the wire tension change rate, corrosion rate, and tilt angle change rate that do not meet the preset safety threshold, different levels of warnings are triggered.

[0058] The warning level increases as the number of conditions not met increases.

[0059] A second aspect of this application provides a power distribution network guy wire fabrication system, the system comprising:

[0060] The calculation unit is used to acquire the geometric parameter data of the pole and the environmental parameter data of the environment where the pole is located, and to calculate the length and bending angle of the steel strand used for guy wire production based on the geometric parameter data and the environmental parameter data.

[0061] An assembly unit is used to cut steel strand raw materials according to the length of the steel strand, bend and shape the cut steel strands according to the bending angle, and assemble the steel strands that have completed the bending and shaping.

[0062] An adjustment unit is used to calculate the tension deviation of the assembled steel strand after it has been installed and formed into a pull wire, and to adjust the tension of the pull wire according to the tension deviation.

[0063] The testing unit is used to perform stability tests on the pull wire. The stability tests include pre-load tests, graded load tests, and overload tests. The results of the stability tests are determined based on the results of the pre-load tests, graded load tests, and overload tests.

[0064] The early warning unit is used to monitor the tension and corrosion level of the guy wire and the tilt angle of the pole in real time, and to perform early warning analysis on the safety of the guy wire based on the tension, corrosion level and tilt angle.

[0065] As can be seen from the above technical solutions, the present invention has the following advantages:

[0066] This invention provides a method for manufacturing distribution network guy wires. By acquiring the geometric and environmental parameters of the pole and calculating the length and bending angle of the steel strand, it ensures the compatibility of the manufacturing materials, avoiding material waste and installation problems caused by inaccurate parameters. During the manufacturing process, the steel strands are cut, bent, shaped, and assembled according to the length and bending angle, improving the accuracy and efficiency of guy wire manufacturing. During installation, the guy wire tension can be dynamically adjusted to ensure that the guy wire is in the optimal stress state at the initial installation, guaranteeing installation quality. By conducting stability tests on the guy wire, potential problems can be identified in advance, ensuring the safety and reliability of the guy wire. During long-term use, the guy wire tension, corrosion level, and pole tilt angle are monitored in real time, and early warning analysis and maintenance are performed to promptly identify potential risks, take measures in advance, extend the service life of the guy wire, reduce the probability of distribution network failures, and ensure the stability of power supply. This solves the problems of low accuracy and efficiency in existing guy wire manufacturing and the inability to monitor potential risks in a timely manner, resulting in a short service life of guy wires and a high probability of distribution network failures. Attached Figure Description

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

[0068] Figure 1 A flowchart illustrating a method for manufacturing power distribution network guy wires according to an embodiment of the present invention;

[0069] Figure 2 This is a schematic diagram of a power distribution network guy wire fabrication system provided in an embodiment of the present invention. Detailed Implementation

[0070] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0071] Please see Figure 1 The present invention provides a method for manufacturing power distribution network guy wires, comprising:

[0072] Step 101: Obtain the geometric parameters of the pole and the environmental parameters of the environment where the pole is located. Calculate the length and bending angle of the steel strand used for guy wire fabrication based on the geometric parameters and environmental parameters.

[0073] Step 102: Cut the raw steel strands according to their length, bend and shape the cut steel strands according to the bending angle, and assemble the bent and shaped steel strands.

[0074] Step 103: After installing the assembled steel strands and forming the pull wire, calculate the tension deviation of the pull wire and adjust the tension of the pull wire according to the tension deviation.

[0075] Step 104: Conduct stability tests on the pull wire. The stability tests include pre-load tests, graded load tests, and overload tests. Determine the results of the stability tests based on the results of the pre-load tests, graded load tests, and overload tests.

[0076] Step 105: Monitor the tension and corrosion level of the guy wire and the tilt angle of the pole in real time, and conduct early warning analysis on the safety of the guy wire based on the tension, corrosion level and tilt angle.

[0077] This invention provides a method for manufacturing distribution network guy wires. By acquiring the geometric and environmental parameters of the pole and calculating the length and bending angle of the steel strand, it ensures that the specifications of the manufacturing materials are suitable, avoiding material waste and installation problems caused by inaccurate parameters. During the manufacturing process, the steel strands are cut, bent, shaped, and assembled according to the length and bending angle, improving the accuracy and efficiency of guy wire manufacturing. During installation, the guy wire tension can be dynamically adjusted to ensure that the guy wire is in the optimal stress state at the initial installation, ensuring installation quality. By conducting stability tests on the guy wire, potential problems can be identified in advance, ensuring the safety and reliability of the guy wire. During long-term use, the guy wire tension, corrosion degree, and pole tilt angle are monitored in real time, and early warning analysis and maintenance are performed to promptly identify potential risks, take measures in advance, extend the service life of the guy wire, reduce the probability of distribution network failures, and ensure the stability of power supply.

[0078] In one embodiment, step 101, calculating the length and bending angle of the steel strand used for wire drawing based on geometric parameter data and environmental parameter data, includes:

[0079] Step 1011: Based on environmental parameter data, determine the environmental compensation coefficients used to calculate the length and bending angle of the steel strand. The environmental compensation coefficients include: soil compensation coefficient. Temperature compensation coefficient and humidity compensation coefficient .

[0080] Step 1012: Based on the calculation formulas for the length of the steel strand and the bending angle, calculate the length of the steel strand used for guy wire production according to the geometric parameter data and the environmental compensation coefficient. The geometric parameter data includes: the height of the pole and the horizontal distance between the preset guy wire anchor point and the bottom of the pole.

[0081] The formula for calculating the length of steel strand is:

[0082] ;

[0083] The formula for calculating the bending angle is:

[0084] ;

[0085] In the formula, The length of the steel strand. For the bending angle, The height of the pole. The horizontal distance between the preset guy wire anchor point and the bottom of the pole, Soil compensation coefficient; This is the temperature compensation coefficient; This is the humidity compensation coefficient.

[0086] It should be noted that, in specific implementations, geometric parameter data and environmental parameter data can be transmitted to the edge computing gateway to calculate the length and bending angle of the steel strand used for wire drawing. Those skilled in the art can select other computing devices according to the actual situation, which will not be elaborated here.

[0087] Further, in one embodiment, step 1011 includes:

[0088] Step 10111: Classify the soil according to environmental parameter data, and determine the value of the soil compensation coefficient based on the soil classification results. The environmental parameter data includes: ambient temperature. Ambient relative humidity Soil relative humidity and soil resistivity ;

[0089] Specifically: If >25% and <100 If the soil type is determined to be clay, then the soil compensation coefficient will be... The value is 1.5; if <10% and >500 If the soil type is determined to be sandy, then the soil compensation coefficient will be... The value is 2.0; if 10% < <25% and / or 100 < <500 If the soil type is determined to be loam, then the soil compensation coefficient will be... The value is 1.7.

[0090] Step 10112: Based on the calculation formula of the temperature compensation coefficient, calculate the temperature compensation coefficient according to the ambient temperature.

[0091] ;

[0092] in, ;

[0093] In the formula, This is the temperature compensation coefficient. is the linear thermal expansion coefficient of steel. For ambient temperature, For the foundation length of the steel strand, Reserve the length for the steel strand;

[0094] Step 10113: Compare the ambient relative humidity with the preset threshold, and determine the value of the humidity compensation coefficient based on the comparison result.

[0095] Specifically: If ≤60%, then the humidity compensation coefficient The value is 1.0; if 60% < ≤80%, then the humidity compensation coefficient The value is 1.05; if If the humidity is greater than 80%, then the humidity compensation coefficient is... The value is 1.10.

[0096] An example of step 101 is as follows:

[0097] pole height =10m, the horizontal distance between the preset guy wire anchor point and the bottom of the pole. =5m, ambient temperature =25℃, ambient relative humidity =50%, soil relative humidity =20%, soil resistivity =300 , =0.2m, = ;

[0098] , ;

[0099] Because it satisfies 10% < <25% and 100 < <500 Therefore, the soil type was determined to be loam, and the soil compensation coefficient was set accordingly. The value is 1.7;

[0100] ;

[0101] satisfy ≤60%, then the humidity compensation coefficient The value is 1.0;

[0102] so ;

[0103] .

[0104] In one embodiment, step 102 includes:

[0105] Step 1021: Calculate the clamping force required by the clamping mechanism to clamp the raw steel strand. After the clamping mechanism clamps the raw steel strand according to the clamping force, the raw steel strand is cut according to the length of the steel strand to obtain the steel strand to be processed.

[0106] It should be noted that in specific operations, the first step is to determine the length of the steel strand. Mark the corresponding length on the steel strand raw material, and use a clamping mechanism to clamp the steel strand raw material from both sides of the marked points. Calculate the clamping force required by the clamping mechanism according to the following method. :

[0107]

[0108]

[0109]

[0110]

[0111] in, and These represent the minimum and maximum values ​​of the clamping force, respectively. This represents the cross-sectional area of ​​the steel strand; Indicates the diameter of the steel strand; Indicates the yield strength of the steel strand; Indicates the tensile strength of the steel strand; Indicates the coefficient of friction;

[0112] After being clamped by the clamping mechanism, the steel strand raw material is cut at the marked position by the cutting mechanism to obtain the steel strand to be processed in the required length.

[0113] Step 1022: Measure the length of the steel strand to be processed, and determine whether the measured length of the steel strand is within the preset length range. If not, issue an alarm and return to step 1021 to re-trim until it meets the preset length range.

[0114] Specifically: A laser measuring instrument is used to measure the steel strand to be processed to obtain the measured length of the steel strand. ;like = If the length of the steel strand to be processed meets the requirements, then the steel strand to be processed will be used for subsequent processing; if ≠ If the length of the steel strand to be processed does not meet the requirements, an alarm message will be issued, and the strand will be re-cut until it meets the requirements. =

[0115] Examples of steps 1021 to 1022 are as follows:

[0116] Let the diameter of the steel strand be... =8mm, yield strength of steel strand =1200MPa, tensile strength of steel strand =1500MPa, coefficient of friction =0.3, length of steel strand =13m; the cross-sectional area of ​​the steel strand was calculated. =50.24mm 2 Minimum clamping force =18N, the maximum clamping force =23N; therefore ;

[0117] After cutting, the length of the steel strand to be processed is obtained by measuring it with a laser measuring instrument. =12.9mm; meets the requirements = If the length of the steel strand to be processed meets the requirements, then the steel strand to be processed will be used for subsequent processing.

[0118] Step 1023: Bend and shape the steel strand to be processed according to the bending angle to obtain the first steel strand after bending and shaping.

[0119] Specifically: based on the bending angle A bending die is used to bend and plastically process one end of the steel strand to be processed, resulting in the first steel strand after bending and plasticization.

[0120] Step 1024: Calculate the angle error and radius error between the first steel strand and the preset steel strand bending model. Determine whether the first steel strand meets the bending requirements based on the angle error and radius error. If not, issue an alarm and return to step 1023. If yes, proceed to step 1025.

[0121] Specifically: The bending shape of the first steel strand is detected using a three-dimensional laser scanning device and compared with a preset steel strand bending model. The comparison analysis includes angle error and radius error. If the angle error = [-1.5°, 1.5°] and the radius error = [-3%, 3%], the first steel strand is determined to meet the requirements and is then processed (i.e., step 1025 is executed). If the angle error ≠ [-1.5°, 1.5°] and / or the radius error ≠ [-3%, 3%], the first steel strand is determined to be non-compliant, an alarm message is issued, and it is marked as a non-compliant bending product before returning to step 1023.

[0122] Step 1025: Assemble the bent portion of the first steel strand with the wedge clamp. After assembly, the second steel strand is obtained.

[0123] Specific examples of steps 1023 to 1025 are as follows:

[0124] Let the bending angle be... =50°, the preset angle of the steel strand bending model is equal to The radius is 45mm. The bending shape of the first steel strand is detected by a three-dimensional laser scanning device. The actual bending angle is measured to be 49° and the actual bending radius is 46mm. The angle error is calculated to be 50°-49°=1° and the radius error is (46-45) / 45=2%. If the angle error = [-1.5°, 1.5°] and the radius error = [-3%, 3%] are satisfied, the first steel strand is determined to meet the requirements and can be further processed.

[0125] In one embodiment, step 103 includes:

[0126] After the assembled steel strands are installed and formed into a tension wire, the tension of the tension wire is adjusted using a tension adjusting device. The tension of the tension wire is mechanically adjusted by adjusting the screw of the tension adjusting device. Adjustments are made to the screw's mechanical adjustment range. Calculate as follows:

[0127] ;

[0128] ;

[0129] In the formula, Indicates tension deviation; This indicates the preset tension of the drawstring; This represents the initial tension in the wire; This indicates the elastic modulus of the steel strand; This represents the cross-sectional area of ​​the steel strand; This indicates the initial length of the adjustable portion of the screw itself;

[0130] like If the value is greater than 0, the tension of the pull wire is determined to be insufficient. The mechanical adjustment amount of the screw is then calculated. Adjust the screw in the direction of shortening;

[0131] like If the value is less than 0, it indicates that the tension in the tensioning wire is too high. The mechanical adjustment amount of the screw is then calculated. Adjust the screw in the direction of extension.

[0132] It should be noted that in specific operation, a guy rod is buried at the preset guy rod anchor point. One end of the guy rod is fixed at the preset guy rod anchor point, and the other end extends towards the top of the pole. A guy rod clamp is installed near the top of the pole. The end of the second steel strand with the wedge clamp is fastened to the guy rod clamp, and the other end of the second steel strand is connected to the guy rod to form a guy line. The connection between the second steel strand and the guy rod clamp near the top of the pole can be installed by a lifting mechanism combined with a robotic arm. After the tension of the guy line is adjusted, the end of the guy line near the guy rod is fastened to the guy rod.

[0133] An example of step 103 is as follows:

[0134] Preset tension of the draw wire =800N, initial tension of the wire. =750N, elastic modulus of steel strand = Cross-sectional area of ​​steel strand =50.24mm 2 The initial length of the adjustable part of the screw itself =0.2m;

[0135] Calculate tension deviation =50N;

[0136] Screw mechanical adjustment = ;

[0137] If the value is greater than 0, it indicates insufficient tension in the tension wire. The mechanical adjustment amount of the screw is then calculated. Adjust the screw in the direction of shortening.

[0138] In one embodiment, step 104 includes:

[0139] An electro-hydraulic servo actuator is used to apply load to the guy wire. Two positioning clamps are set at the middle of the guy wire, with a preset distance between the two positioning clamps. The distance between the two positioning clamps is the gauge length, and strain gauges are set between the two positioning clamps. An inclination sensor is used to monitor the tilt angle of the pole in real time, with the initial angle as 0.

[0140] The preload test includes: controlling the electro-hydraulic servo actuator to load the first preset load at a first preset loading rate, holding it for a first preset time and then unloading it, and obtaining the first tilt angle of the pole and the residual deformation rate of the gauge length section; if the first tilt angle and the residual deformation rate are not greater than their respective preset thresholds, the preload test is deemed to be qualified; otherwise, it is deemed to be unqualified.

[0141] Specifically: electro-hydraulic servo actuators KN / S loaded to KN, hold Unload after a certain time to obtain the first inclination angle of the pole And the residual deformation rate of the gauge section ; If it meets ≤0.2 and ≤0.05%, it is determined that the preloading test is qualified; otherwise, it is determined that the preloading test is unqualified. Here, Represents the preset tension of the guy wire

[0142] The stepped loading test includes: controlling the electro-hydraulic servo actuator to load to multiple sequentially increasing test loads at a second preset loading rate, unloading after maintaining the second preset time for each level, measuring the strain through strain gauges and calculating the stress, performing linear regression on the measured strain and stress to obtain the linearity; if the linearity is not lower than the preset linearity threshold, it is determined that the stepped loading test is qualified; otherwise, it is determined to be unqualified

[0143] Specifically: The loads required to be loaded by the electro-hydraulic servo actuator include KN, KN, and KN for three levels of loads; the loading rate for each level KN / S, and load to KN, KN, and KN respectively. Unload after maintaining time for each level, measure the strain through the strain gauge on the guy wire, and calculate the stress; perform linear regression using the strain data and stress data to obtain the linearity ; If ≥0.99, it is determined that the stepped loading test is qualified; otherwise, it is determined that the stepped loading test is unqualified

[0144] The overload test includes: controlling the electro-hydraulic servo actuator to load to an overload load exceeding the preset guy wire tension at a third preset loading rate, unloading after maintaining the third preset time to obtain the second inclination angle of the pole and the plastic deformation rate of the gauge section; if both the second inclination angle and the plastic deformation rate are not greater than their respective preset thresholds, it is determined that the overload test is qualified; otherwise, it is determined to be unqualified

[0145] Specifically: The electro-hydraulic servo actuator is loaded to KN / S to KN, hold time and then unload to obtain the second inclination angle of the pole and the plastic deformation rate of the gauge section ; If it meets ≤0.5° and ≤0.1%, it is determined that the overload test is qualified; otherwise, it is determined that the overload test is unqualified

[0146] When the preloading test, the grading loading test, and the overloading test are all qualified, it is determined that the stability test passes; otherwise, it is determined that the test fails, and step 103 is executed again.

[0147] An example of step 104 is as follows:

[0148] Preset guy wire tension = 800 N = 0.8 KN. During the preloading test = 3 S. During the grading loading test = 5 S. During the overloading test = 8 S;

[0149] Conduct the preloading test:

[0150] The electro-hydraulic servo actuator loads at a rate of 0.008 KN / S to 0.16 KN, holds for 3 S and then unloads, and the first inclination angle of the pole is measured = 0.1°. The residual deformation rate of the gauge section = 0.04%;

[0151] Meet ≤ 0.2 and ≤ 0.05%, then it is determined that the preloading test is qualified;

[0152] Conduct the grading loading test:

[0153] The loads required to be loaded by the electro-hydraulic servo actuator include three levels of loads: 0.4 KN, 0.64 KN, and 0.8 KN;

[0154] [[ID=​​​​​​​​​​​​​​​​​​​​​​

[0160] Step 1051: Periodically collect the tension of the tension wire and calculate the tension change rate based on the tension of the tension wire.

[0161] Specifically: A fiber optic grating sensor is used to measure the tension of the guy wire. The tension of the guy wire is collected at 1-hour intervals, and the rate of change of tension is calculated. .

[0162] Step 1052: Periodically obtain the location of rust and the remaining wall thickness of rust on the surface of the wire, and calculate the rust rate based on the location of rust and the remaining wall thickness of rust.

[0163] Specifically: The surface of the wire was scanned using an eddy current flaw detector to obtain the location of rust and the remaining rust thickness at the rust location. The remaining rust thickness was collected every 24 hours, and the rust rate was calculated. .

[0164] Step 1053: Periodically collect the tilt angle of the top of the pole, calculate the tilt angle change rate based on the tilt angle, and if the change rate of guy wire tension, corrosion rate and tilt angle change rate do not exceed their respective preset safety thresholds, the guy wire is deemed to be safe; otherwise, it is deemed unsafe and a graded early warning analysis is performed.

[0165] Specifically: The tilt angle of the top of the utility pole is collected at 24-hour intervals, and the rate of change of the tilt angle is calculated. If satisfied ≤1、 ≤0.5 and If both ≤2 conditions are met, the current guy wire is deemed safe; otherwise, the current guy wire is deemed unsafe, and a graded early warning analysis is performed. Among these, the guy wire tension change rate... The unit is KN / hour; corrosion rate The unit is mm / day; the rate of change of tilt angle. The unit is degrees per day.

[0166] An example of step 105 is as follows:

[0167] For example, the first time the tension of the pull wire is collected. =500N, the tension of the wire collected a second time after 1 hour. =501N; Remaining wall thickness of rust collected in the first sampling. =8mm, the remaining wall thickness of the rust collected a second time after 24 hours. =7.98mm; the first measured tilt angle of the pole top. =0.3°, the second measurement of the pole top tilt angle after 24 hours =0.4°;

[0168] Calculate the rate of change of tension in the wire = ;

[0169] Calculate the corrosion rate = ;

[0170] Calculate the rate of change of tilt angle = ;

[0171] satisfy ≤1、 ≤0.5 and If both ≤2 are satisfied, then the safety of the current guy wire is deemed qualified.

[0172] Furthermore, in one embodiment, step 105, the graded early warning analysis, includes:

[0173] Different levels of warnings are triggered based on the number of conditions among the rate of change of tension in the wire, the rate of corrosion, and the rate of change of tilt angle that do not meet the preset safety threshold; the warning level increases as the number of conditions that are not met increases.

[0174] Specifically: If ≤1、 ≤0.5 and If any one of ≤2 is not satisfied, a Level 1 warning is triggered; if ≤1、 ≤0.5 and If any two of the conditions in ≤2 are not met, a level 2 warning is triggered; if ≤1、 ≤0.5 and If neither ≤2 is met, a Level 3 warning is triggered. After the warning is triggered, information is sent to the administrator via the Internet, and the administrator performs maintenance.

[0175] The above is a method for making power distribution network guy wires according to an embodiment of the present invention. The following is a system for making power distribution network guy wires according to an embodiment of the present invention.

[0176] Please see Figure 2 The present invention provides a power distribution network guy wire fabrication system, comprising:

[0177] The calculation unit 201 is used to acquire the geometric parameter data of the pole and the environmental parameter data of the environment where the pole is located, and to calculate the length and bending angle of the steel strand used for guy wire production based on the geometric parameter data and the environmental parameter data.

[0178] Assembly unit 202 is used to cut steel strand raw materials according to the length of the steel strand, bend and shape the cut steel strands according to the bending angle, and assemble the steel strands that have completed the bending and shaping.

[0179] The adjustment unit 203 is used to calculate the tension deviation of the tension wire after the assembled steel strand is installed and formed into a pull wire, and adjust the tension of the pull wire according to the tension deviation.

[0180] Test unit 204 is used to perform stability tests on the pull wire. The stability tests include preload tests, graded load tests, and overload tests. The results of the stability tests are determined based on the results of the preload tests, graded load tests, and overload tests.

[0181] The early warning unit 205 is used to monitor the tension and corrosion level of the guy wire and the tilt angle of the pole in real time, and to perform early warning analysis on the safety of the guy wire based on the tension, corrosion level and tilt angle.

[0182] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working process of the system and unit described above can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0183] In the embodiments provided by this invention, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces, indirect coupling or communication connection between apparatuses or units, and may be electrical, mechanical, or other forms.

[0184] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0185] Furthermore, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0186] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0187] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for manufacturing power distribution network guy wires, characterized in that, include: S1. Obtain the geometric parameter data of the pole and the environmental parameter data of the environment where the pole is located, and calculate the length and bending angle of the steel strand used for guy wire production based on the geometric parameter data and the environmental parameter data; S2. Cut the raw steel strand according to the length of the steel strand, bend and shape the cut steel strand according to the bending angle, and assemble the steel strand that has been bent and shaped. S3. After the assembled steel strand is installed and a pull wire is formed, the tension deviation of the pull wire is calculated, and the tension of the pull wire is adjusted according to the tension deviation. S4. Perform a stability test on the pull wire. The stability test includes a preload test, a graded load test, and an overload test. Determine the result of the stability test based on the results of the preload test, the graded load test, and the overload test. S5. Monitor the tension and corrosion level of the guy wire and the tilt angle of the pole in real time, and conduct early warning analysis on the safety of the guy wire based on the tension, corrosion level, and tilt angle.

2. The method for manufacturing power distribution network guy wires according to claim 1, characterized in that, The calculation of the steel strand length and bending angle for wire drawing based on the geometric parameter data and the environmental parameter data includes: Based on the environmental parameter data, an environmental compensation coefficient is determined for calculating the length of the steel strand and the bending angle. The environmental compensation coefficient includes: soil compensation coefficient, temperature compensation coefficient, and humidity compensation coefficient. Based on the calculation formulas for the length of the steel strand and the bending angle, the length of the steel strand used for guy wire production and the bending angle are calculated according to the geometric parameter data and the environmental compensation coefficient. The geometric parameter data includes: the height of the pole and the horizontal distance between the preset guy wire anchor point and the bottom of the pole. The formula for calculating the length of the steel strand is: ； The formula for calculating the bending angle is: ； In the formula, The length of the steel strand. For the bending angle, The height of the pole. The horizontal distance between the preset guy wire anchor point and the bottom of the pole, Soil compensation coefficient; This is the temperature compensation coefficient; This is the humidity compensation coefficient.

3. The method for manufacturing power distribution network guy wires according to claim 2, characterized in that, The environmental compensation coefficients used to calculate the length of the steel strand and the bending angle are determined based on the environmental parameter data. These environmental compensation coefficients include: a soil compensation coefficient, a temperature compensation coefficient, and a humidity compensation coefficient. The soil is classified according to the environmental parameter data, and the value of the soil compensation coefficient is determined according to the soil classification results. The environmental parameter data includes: ambient temperature, ambient relative humidity, soil relative humidity and soil resistivity. The temperature compensation coefficient is calculated based on the formula for calculating the temperature compensation coefficient and the ambient temperature. ； in, ; In the formula, This is the temperature compensation coefficient. is the linear thermal expansion coefficient of steel. The ambient temperature is... The length of the steel strand foundation. Reserve the length for the steel strand; The relative humidity of the environment is compared with a preset threshold, and the value of the humidity compensation coefficient is determined based on the comparison result.

4. The method for manufacturing power distribution network guy wires according to claim 2, characterized in that, The step of cutting the raw steel strand according to the length of the steel strand includes: S21. Calculate the clamping force required by the clamping mechanism to clamp the steel strand raw material. After clamping the steel strand raw material according to the clamping force, cut the steel strand raw material according to the length of the steel strand to obtain the steel strand to be processed. S22. Measure the steel strand to be processed to obtain the measured length of the steel strand, and determine whether the measured length of the steel strand is within the preset length range of the steel strand. If not, issue an alarm and return to step S21 to re-trim until it meets the preset length range.

5. The method for manufacturing power distribution network guy wires according to claim 4, characterized in that, The process of bending and shaping the cut steel strands according to the bending angle, and assembling the bent steel strands, includes: S23. The steel strand to be processed is bent and shaped according to the bending angle to obtain the first steel strand after bending and shaping. S24. Calculate the angle error and radius error between the first steel strand and the preset steel strand bending model. Determine whether the first steel strand meets the bending requirements based on the angle error and the radius error. If not, issue an alarm and return to step S23. If yes, proceed to step S25. S25. Assemble the bent portion of the first steel strand with the wedge clamp to obtain the second steel strand after assembly.

6. The method for manufacturing power distribution network guy wires according to claim 1, characterized in that, The step of calculating the tension deviation of the draw wire and adjusting the tension of the draw wire based on the tension deviation includes: The tension of the draw wire is adjusted using a tension adjusting device, and the tension of the draw wire is mechanically adjusted by adjusting the screw of the tension adjusting device. Adjustments are made to the mechanical adjustment amount of the screw. Calculate as follows: ； ； In the formula, Indicates tension deviation; This indicates the preset tension of the drawstring; This represents the initial tension in the wire; This indicates the elastic modulus of the steel strand; This represents the cross-sectional area of ​​the steel strand; This indicates the initial length of the adjustable portion of the screw itself; like If the value is greater than 0, the tension of the pull wire is determined to be insufficient. The mechanical adjustment amount of the screw is then calculated. Adjust the screw in the direction of shortening; like If the value is less than 0, the tension of the wire is considered too high. The mechanical adjustment amount of the screw is then calculated accordingly. Adjust the screw in the direction of extension.

7. The method for manufacturing power distribution network guy wires according to claim 1, characterized in that, The stability test performed on the pull wire includes a pre-load test, a graded loading test, and an overload test. The result of the stability test is determined based on the results of the pre-load test, the graded loading test, and the overload test, including: An electro-hydraulic servo actuator is used to apply a load to the guy wire. Two positioning clamps are set at the middle position of the guy wire, with a preset distance between the two positioning clamps. The distance between the two positioning clamps is the gauge length, and a strain gauge is set between the two positioning clamps. An inclination sensor is used to monitor the tilt angle of the pole in real time, with the initial angle as 0. The preload test includes: The electro-hydraulic servo actuator is controlled to load the first preset load at a first preset loading rate, and then unloaded after maintaining the load for a first preset time, thereby obtaining the first tilt angle of the pole and the residual deformation rate of the gauge length segment. If the first tilt angle and the residual deformation rate are both not greater than their respective preset thresholds, the preloading test is deemed to be qualified; otherwise, it is deemed to be unqualified. The graded loading test includes: The electro-hydraulic servo actuator is controlled to apply multiple sequentially increasing test loads at a second preset loading rate. After each load is held for a second preset time, it is unloaded. The strain is measured and the stress is calculated using the strain gauge. The measured strain and stress are then linearly regressed to obtain the linearity. If the linearity is not lower than the preset linearity threshold, the graded loading test is deemed qualified; otherwise, it is deemed unqualified. The overload test includes: The electro-hydraulic servo actuator is controlled to load an overload exceeding the preset tension of the tension wire at a third preset loading rate, and then unloaded after maintaining the load for a third preset time, thereby obtaining the second tilt angle of the pole and the plastic deformation rate of the gauge length section. If the second tilt angle and the plastic deformation rate are both not greater than their respective preset thresholds, the overload test is deemed to be qualified; otherwise, it is deemed to be unqualified. If the preloading test, the hierarchical loading test, and the overloading test are all qualified, the stability test is deemed to have passed; otherwise, it is deemed to have failed, and step S3 is re-executed.

8. The method for manufacturing power distribution network guy wires according to claim 7, characterized in that, Step S5 includes: The tension of the pull wire is periodically collected, and the rate of change of the pull wire tension is calculated based on the tension of the pull wire. The location of rust and the remaining wall thickness of rust on the surface of the pull wire are obtained periodically, and the rust rate is calculated based on the location of rust and the remaining wall thickness of rust. The tilt angle of the top of the pole is collected periodically, and the rate of change of the tilt angle is calculated based on the tilt angle. If the rate of change of tension of the pull wire, the rate of corrosion, and the rate of change of tilt angle all do not exceed their respective preset safety thresholds, the safety of the pull wire is deemed qualified; otherwise, it is deemed unqualified, and a graded early warning analysis is performed.

9. The method for manufacturing power distribution network guy wires according to claim 8, characterized in that, The tiered early warning analysis includes: Based on the number of conditions among the wire tension change rate, corrosion rate, and tilt angle change rate that do not meet the preset safety threshold, different levels of warnings are triggered. The warning level increases as the number of conditions not met increases.

10. A power distribution network guy wire fabrication system, characterized in that, include: The calculation unit is used to acquire the geometric parameter data of the pole and the environmental parameter data of the environment where the pole is located, and to calculate the length and bending angle of the steel strand used for guy wire production based on the geometric parameter data and the environmental parameter data. An assembly unit is used to cut steel strand raw materials according to the length of the steel strand, bend and shape the cut steel strands according to the bending angle, and assemble the steel strands that have completed the bending and shaping. An adjustment unit is used to calculate the tension deviation of the assembled steel strand after it has been installed and formed into a pull wire, and to adjust the tension of the pull wire according to the tension deviation. The testing unit is used to perform stability tests on the pull wire. The stability tests include pre-load tests, graded load tests, and overload tests. The results of the stability tests are determined based on the results of the pre-load tests, graded load tests, and overload tests. The early warning unit is used to monitor the tension and corrosion level of the guy wire and the tilt angle of the pole in real time, and to perform early warning analysis on the safety of the guy wire based on the tension, corrosion level and tilt angle.

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