Power line construction stress monitoring and early warning method and device and construction monitoring platform

Abstract

The application provides a power line construction stress monitoring and early warning method and device and a construction monitoring platform, and relates to the technical field of power equipment. The method steps are as follows: a construction stress model and a pay-off trolley state model are constructed based on an overhead transmission line construction scene; overhead transmission line construction parameters are obtained and sent to the construction stress model to obtain the horizontal tension and tension of the overhead line at the traction plate; the overhead transmission line construction parameters are sent to the pay-off trolley state model to obtain the load on the pay-off trolley, the traction rope envelope angle and the pay-off trolley deflection angle; data analysis is performed on the two groups of construction monitoring data: if all the two groups of construction monitoring data are in the preset early warning interval, it is considered that the construction process is normal; if one or more monitoring data in the two groups of construction monitoring data exceed the preset early warning interval, it is considered that the construction process is abnormal, and a construction abnormality early warning signal is sent. The application can more comprehensively analyze the operation status of the transmission line.

Description

Technical Field

[0001] This invention relates to the field of power equipment technology, and in particular to a method, device, and construction monitoring platform for monitoring and early warning of stress during power line construction. Background Technology

[0002] Power lines are conductor networks that connect substations to power users or equipment, responsible for transmitting and distributing electrical energy from the power source to the load. Power lines are classified by voltage level into high-voltage and low-voltage categories, with high-voltage lines at 1kV and above, and low-voltage lines below 1kV. Furthermore, lines between 1kV and 35kV are generally referred to as medium-voltage lines, while those between 35kV and 220kV are high-voltage lines, and lines exceeding 220kV are considered ultra-high-voltage lines.

[0003] The main cause of power line damage in winter is icing on the wires, which can lead to breakage due to excessive external force. Because the stress on transmission lines is difficult to monitor in real time, a line break can cause widespread power outages, severely impacting production and daily life. Therefore, effectively monitoring, providing early warnings, and mitigating the stress on power lines to prevent breakage has become a pressing problem. Summary of the Invention

[0004] Purpose of the invention: To propose a method, device, and construction monitoring platform for monitoring and early warning of stress during power line construction, in order to solve the above-mentioned problems existing in the prior art.

[0005] The first aspect of this invention provides a method for monitoring and early warning of stress during power line construction, comprising the following steps:

[0006] A construction stress model and a string laying pulley state model were constructed based on the construction scenario of overhead transmission lines. The construction parameters of the overhead transmission line are obtained and then fed into the construction stress model to obtain the first set of construction monitoring data; the first set of construction monitoring data includes the horizontal tension and tensile tension of the overhead line at the traction plate; The construction parameters of the overhead transmission line are input into the state model of the stringing pulley to obtain the second set of construction monitoring data; the second set of construction monitoring data includes the load on the stringing pulley, the traction rope envelope angle and the stringing pulley deflection angle. Data analysis was performed on the two sets of construction monitoring data: If both sets of construction monitoring data are within the preset warning range, the construction process is considered normal. If one or more monitoring data points in the two sets of construction monitoring data exceed the preset warning range, it is considered that there is an abnormality in the construction process, and a construction abnormality warning signal is issued.

[0007] In a further embodiment of the first aspect, the overhead transmission line construction scenario includes a conductor reel, from which a conductor is led out and, after being subjected to a predetermined tension by a tensioning machine, is introduced into a traction plate. The traction plate pulls the conductor to a laying pulley, and the laying pulley pulls the conductor to a traction machine via a traction rope.

[0008] In a further embodiment of the first aspect, the construction stress model includes a sag calculation model for laying out lines, a horizontal tension calculation model, and a tensile tension calculation model.

[0009] The sag calculation model for laying out power lines is used to represent the coordinates of any point on the power transmission line. The sag f and the length of the laying line L; coordinates of any point on the transmission line The equation of the curve is as follows:

[0010] coordinates of any point on the transmission line The formula for calculating the sag f is as follows:

[0011] Maximum sag at the center of the gear gap The calculation formula is as follows:

[0012] The formula for calculating the length L of the laying line is as follows:

[0013] In the formula, w is the unit weight of the conductor; denoted as the elevation difference angle at coordinate P; H represents the horizontal tension of the overhead line; and l represents the span.

[0014] The horizontal tension calculation model is used to express the horizontal tension of an overhead line in a control span when an obstacle appears in the cable laying span. :

[0015] In the formula, The height of the left suspension point of the stringing rod relative to the positioning elevation; S represents the relative height of the object being crossed to the left of the positioning elevation; S represents the distance maintained between the line and the apex of the object being crossed.

[0016] The tension calculation model uses the horizontal tension of the overhead line at the control span. Determine the tension mechanism. The expression is as follows:

[0017]

[0018] In the formula, The elevation difference angle of the i-th segment is represented by w; w is the unit weight of the conductor. Let be the gear distance of the i-th gear; This indicates the sag of the traction side of the i-level conductor; Indicates the first The coefficient of friction between the overhead line and the pulley at the stop; This represents the elevation difference of the i-th level; On both sides of the cable-laying pulley on the tower, the total axial tension of the m conductors on the tensioning side is... and the total axial tension of the traction side conductor They are respectively:

[0019]

[0020] Axial tension of the tension rope on both sides of the tower. and the axial tension of the traction rope on the traction side They are respectively:

[0021]

[0022] In the formula, This represents the axial tension of the traction rope at the (n-1)th node on the tensioning side; This represents the axial tension of the traction rope at the (n-1)th node on the traction side; This represents the elevation difference at the nth node; This represents the initial mass of the conductor.

[0023] In a further embodiment of the first aspect, the process of constructing the state model of the wire-laying pulley includes: The tension machine, traction machine, and wire-laying pulley are used as nodes in the wire-laying system, with the traction plate as the moving node; There are a total of There are 10 nodes, including the wire-laying pulley. indivual; The relative height difference between nodes is :

[0024] Relative span is ;

[0025] In the formula, For the conductor in the i-th segment The length of the traction rope; For the conductor in the i-th segment The horizontal tension of the traction rope; , The wires in the i-th segment are respectively The vertical force on the traction rope at the starting and ending points, where q is a wire Unit weight of the traction rope; EA is the product of cross-sectional area and elastic modulus. Establish a coordinate system OXYZ with the top of the wire-feeding pulley as the center O, where the positive Z-axis is vertically upward and the X-axis is the horizontal direction on the tension side. The plane containing the tension side conductor. The plane containing the traction conductor. and The included angle is .

[0026] In a second aspect, the present invention provides a power line construction stress monitoring and early warning device, which includes a conductor tension monitoring device and an integrated monitoring device; The conductor tension monitoring device includes pulleys A, B, and C with grooves. The groove shape is adapted to the conductor, so that the conductor is clamped on the pulleys. Pulleys A, B, and C form a triangle. Among them, pulleys A and B are located on the upper part of the conductor, and pulley C is located on the lower part of the conductor. A measuring pulley is installed between pulleys A and B. When the wire passes through, it drives the measuring pulley to rotate. A photoelectric encoder is connected to the inside of the measuring pulley. Through the rotation of the pulley, the photoelectric encoder generates a pulse signal, records the rotation angle and frequency of the pulley, and thus calculates the force on the wire. The integrated monitoring device is used to monitor the real-time attitude deviation and displacement changes of the stringing pulley and traction plate during the construction of power transmission lines, and can execute the power line construction stress monitoring and early warning method as described in the first aspect.

[0027] In a further embodiment of the second aspect, pulley C and measuring pulley are provided with telescopic devices; the bottom of pulley C is connected to a metal rod, which is subjected to an upward thrust by a spring to ensure that pulley C is in close contact with the wire; a spring is connected to the inner side of the measuring pulley to provide elastic force.

[0028] In a further embodiment of the second aspect, the integrated monitoring device includes a construction stress model and a line-laying pulley state model; the integrated monitoring device also includes a first data acquisition unit, a second data acquisition unit, and a data analysis unit.

[0029] The first data acquisition unit is used to acquire the construction parameters of the overhead transmission line, and input the construction parameters of the overhead transmission line into the construction stress model to obtain the first set of construction monitoring data; the first set of construction monitoring data includes the horizontal tension and tensile tension of the overhead line at the traction plate; The second data acquisition unit is used to input the construction parameters of the overhead transmission line into the state model of the stringing pulley to obtain a second set of construction monitoring data; the second set of construction monitoring data includes the load on the stringing pulley, the traction rope envelope angle and the stringing pulley deflection angle. The data analysis unit is used to perform data analysis on two sets of construction monitoring data: If both sets of construction monitoring data are within the preset warning range, the construction process is considered normal. If one or more monitoring data points in the two sets of construction monitoring data exceed the preset warning range, it is considered that there is an abnormality in the construction process, and a construction abnormality warning signal is issued.

[0030] In a third aspect, the present invention provides a power line construction monitoring platform, which is connected to the aforementioned power line construction stress monitoring and early warning device; the power line construction monitoring platform also includes a view component, which displays the real-time stress parameters during the power line construction process in the form of a visual chart.

[0031] The view component consists of three interfaces: a video monitoring system, a security system, and a visualization system. The video monitoring system is used to monitor and record the situation on-site in real time. Through camera modules, it captures the operating status of on-site equipment, environmental conditions, and potential anomalies, providing visual support for the application process. The security system is equipped with functions such as safety alarms and emergency buttons, and monitors the safety status of the test site in real time, helping to promptly identify and respond to potential safety risks. The visualization system displays and analyzes test data visually, helping technicians to better understand the test results and perform further data processing and analysis.

[0032] Beneficial effects: This invention utilizes high-precision sensing devices and Internet of Things technology to effectively monitor and analyze the stress conditions at transmission line monitoring points. This allows for a more comprehensive analysis of the transmission line's operational status, thereby maximizing line safety and reducing the likelihood of faults. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the components of the overhead transmission line construction system in an embodiment of the present invention.

[0034] Figure 2 This is a schematic diagram of a coordinate system established with the top of the line-laying pulley as the center.

[0035] Figure 3 Therefore Figure 2 A schematic diagram of the tangential tension vector acting on the wire-laying pulley with the coordinate system as the reference.

[0036] Figure 4 This is a flowchart of the power line construction stress monitoring and early warning method in an embodiment of the present invention.

[0037] Figure 5 This is a schematic diagram of the structure of the power line construction stress monitoring and early warning device in an embodiment of the present invention.

[0038] Figure 6 This is an interface diagram of the power line construction monitoring platform in an embodiment of the present invention. Detailed Implementation

[0039] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the invention. However, it will be apparent to those skilled in the art that the invention can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid obscuring the invention.

[0040] Example 1: The main cause of power line damage in winter is icing on the wires, which can lead to breakage due to excessive external force. Because the stress on transmission lines is difficult to monitor in real time, a line break can cause widespread power outages, severely impacting production and daily life. Therefore, effectively monitoring, providing early warnings, and mitigating the stress on power lines to prevent breakage has become a pressing problem.

[0041] Before elaborating on the construction stress monitoring and early warning method, let's first introduce the components of the overhead transmission line construction system. The overhead transmission line construction system consists of several key components that work together to ensure the safe and smooth erection of the conductors. The construction system mainly comprises a traction machine 7, a tensioning machine 2, a traction rope 6, a conductor 3, a traction plate 4, and a laying pulley 5 (suspended below the crossarm of the tower). Figure 1 As shown. The main tensioning operation process includes the deployment of the guide rope, traction rope 6, conductor 3, and anchor line.

[0042] Based on the components of the above-mentioned overhead transmission line construction system, the steps of the power line construction stress monitoring and early warning method disclosed in this embodiment are as follows: Step 1: Construct a construction stress model and a line-laying pulley state model based on the construction scenario of overhead transmission lines.

[0043] The construction stress model consists of three parts: the sag calculation model for laying out lines, the horizontal tension calculation model, and the tensile tension calculation model.

[0044] 1.1 Sag Calculation Model: Used to represent the coordinates of any point on the transmission line. The sag f and the length of the laying line L; coordinates of any point on the transmission line The equation of the curve is as follows:

[0045] coordinates of any point on the transmission line The formula for calculating the sag f is as follows:

[0046] Maximum sag at the center of the gear gap The calculation formula is as follows:

[0047] The formula for calculating the length L of the laying line is as follows:

[0048] In the formula, w is the unit weight of the conductor; denoted as the elevation difference angle at coordinate P; H represents the horizontal tension of the overhead line; and l represents the span.

[0049] 1.2 Horizontal Tension Calculation Model: Used to express the horizontal tension of an overhead line in a control span when an obstacle appears in the cable laying span. :

[0050] In the formula, The height of the left suspension point of the stringing rod relative to the positioning elevation; S represents the relative height of the object being crossed to the left of the positioning elevation; S represents the distance maintained between the line and the apex of the object being crossed.

[0051] 1.3 Tension Calculation Model: Calculation of horizontal tension of overhead lines at control spans. Determine the tension mechanism. The expression is as follows:

[0052]

[0053] In the formula, The elevation difference angle of the i-th segment is represented by w; w is the unit weight of the conductor. Let be the gear distance of the i-th gear; This indicates the sag of the traction side of the i-level conductor; Indicates the first The coefficient of friction between the overhead line and the pulley at the stop; This represents the elevation difference of the i-th level; On both sides of the cable-laying pulley on the tower, the total axial tension of the m conductors on the tensioning side is... and the total axial tension of the traction side conductor They are respectively:

[0054]

[0055] Axial tension of the tension rope on both sides of the tower. and the axial tension of the traction rope on the traction side They are respectively:

[0056]

[0057] In the formula, This represents the axial tension of the traction rope at the (n-1)th node on the tensioning side; This represents the axial tension of the traction rope at the (n-1)th node on the traction side; This represents the elevation difference at the nth node; This represents the initial mass of the conductor.

[0058] The process of constructing the state model of the wire-laying pulley is as follows: The tension machine, traction machine, and wire-laying pulley are used as nodes in the wire-laying system, with the traction plate as the moving node; There are a total of There are 10 nodes, including the wire-laying pulley. indivual; The relative height difference between nodes is :

[0059] Relative span is ;

[0060] In the formula, For the conductor in the i-th segment The length of the traction rope; For the conductor in the i-th segment The horizontal tension of the traction rope; , The wires in the i-th segment are respectively The vertical force on the traction rope at the starting and ending points, where q is a wire Unit weight of the traction rope; EA is the product of cross-sectional area and elastic modulus. Establish a coordinate system OXYZ with the top of the string-feeding pulley as the center O, as follows: Figure 2 As shown. The positive Z-axis is vertically upward, the X-axis is the horizontal direction on the tension side, and the plane... The plane containing the tension side conductor. The plane containing the traction conductor. and The included angle is The tangential tension vector acting on the wire-laying pulley is as follows: Figure 3As shown, Figure 3 (a) is a plane Inside, (b) is a plane. Inside.

[0061] Step 2: Obtain the construction parameters of the overhead transmission line and input the construction parameters of the overhead transmission line into the construction stress model to obtain the first set of construction monitoring data; the first set of construction monitoring data includes the horizontal tension and tensile tension of the overhead line at the traction plate.

[0062] Step 3: Input the overhead transmission line construction parameters into the stringing pulley state model to obtain the second set of construction monitoring data; the second set of construction monitoring data includes the load on the stringing pulley, the traction rope envelope angle, and the stringing pulley deflection angle.

[0063] Step 4: Perform data analysis on the two sets of construction monitoring data: If both sets of construction monitoring data are within the preset warning range, the construction process is considered normal; if one or more monitoring data in the two sets of construction monitoring data exceed the preset warning range, the construction process is considered abnormal, and a construction abnormality warning signal is issued.

[0064] Based on the surveying and layout data, calculate the results using the above method and compare them with the monitoring data. Based on the analysis of factors influencing surveying and layout and measurement needs, when the difference between the monitored and calculated values ​​is small (here considered to be no more than...),... The construction process is considered normal when the monitored value differs significantly from the calculated value (here, a difference exceeding [a certain threshold] is considered normal). If any abnormalities are detected during the construction process, timely measures such as suspending construction should be taken for adjustment and restoration. The specific process is as follows: Figure 4 As shown.

[0065] Example 2: To achieve accurate measurement of conductor stress and subsequent data transmission, the structure of the force measurement unit and data communication should be rationally designed based on the actual working conditions of overhead line construction and the characteristics of conductor deployment. This embodiment provides a power line construction stress monitoring and early warning device 200, which consists of two parts: a conductor tension monitoring device and an integrated monitoring device.

[0066] 1) Conductor tension monitoring device like Figure 5As shown, the main structure of the force measuring unit consists of six metal pulleys and their matching components. Pulleys A, B, and C feature a grooved design to secure the wire, ensuring stable operation and preventing slippage. The shape and size of the grooves are designed according to the wire specifications to ensure the wire is firmly secured to the pulley. Measuring pulley 201 is located at a critical position in the pulley system; when the wire passes through it, it rotates. A photoelectric encoder is connected to the inside of the measuring pulley. Through the rotation of the pulley, the photoelectric encoder generates pulse signals, recording the pulley's rotation angle and frequency, thereby calculating the force on the wire.

[0067] In addition, to prevent slippage or jamming between the pulley and the conductor, a telescopic device is required for pulley C and measuring pulley 201. The bottom of pulley C is connected to a metal rod 202, and a pull ring 203 is connected to the lower part of the metal rod 202. The metal rod 202 applies an upward thrust via a spring, ensuring that pulley C is in close contact with the conductor. Simultaneously, a small elastic spring is connected to the inner side of the measuring pulley 201 to provide elasticity and prevent slippage or jamming between pulley C and the conductor. Under the action of elasticity, pulley C and measuring pulley 201 can ensure close contact with the conductor while preventing jamming due to excessive force, thus achieving accurate measurement of the conductor's force.

[0068] 2) Integrated monitoring device To monitor the real-time attitude deviation and displacement changes of the stringing pulley and traction plate during transmission line construction, a distributed, bonded sensor was selected, taking into account performance indicators such as measurement range, sensor size, non-contact measurement method, and price. The integrated monitoring device is powered by a lithium battery and utilizes IP5306 for multi-functional power management, supporting power display, automatic standby to reduce power consumption, and features output (input) transition, overvoltage, short circuit, over-discharge protection, and overall over-temperature protection. It supports simultaneous charging and discharging. An STM32F103VET6 is used as the overall control unit. A six-axis sensor, MPU6050, is used to monitor the real-time operating attitude of the equipment. A BMP280 is used to collect temperature, humidity, and air pressure data of the on-site construction environment. Its stable operating temperature range is -40 to 85℃, and its pressure range is 300 to 1100 hPa, meeting the requirements of complex construction environments.

[0069] Example 3: like Figure 6As shown, this embodiment proposes a power line construction monitoring platform, which is connected to the power line construction stress monitoring and early warning device disclosed in the above embodiment. The power line construction monitoring platform is generally divided into three interfaces: a video monitoring system, a security system, and a visualization system. The video monitoring system is used to monitor and record the test site in real time. Through camera modules, it captures the operating status of the test equipment, environmental conditions, and possible anomalies, providing visualization support for the application process. The security system is equipped with functions such as safety alarms and emergency buttons, and monitors the safety status of the test site in real time, helping to promptly identify and respond to potential safety risks. The visualization system visualizes and analyzes the test data, helping technicians to understand the test results more carefully.

[0070] The power line construction monitoring platform collects and analyzes data in real time by monitoring the status of various sensors, equipment, and systems. Once any anomaly or potential safety risk is detected, the system will immediately issue an early warning. The software includes equipment fault alarms to monitor equipment operation; if a fault or anomaly is detected, the system will immediately issue an alarm for timely handling and repair. The system also includes safety hazard alerts; when potential safety hazards are detected, such as improper equipment placement or unsafe working environments, the system will promptly remind on-site personnel to take necessary precautions. Through the early warning information displayed by the safety system, users can promptly understand potential safety risks and problems and take necessary measures to ensure safe production on the construction site. This real-time monitoring and early warning function effectively improves the level of construction site safety management, providing users with reliable protection and support.

[0071] As described above, although the invention has been shown and described with reference to specific preferred embodiments, it should not be construed as limiting the invention itself. Various changes in form and detail may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A power line construction stress monitoring and early warning device, characterized in that, Including conductor tension monitoring devices and integrated monitoring devices; The conductor tension monitoring device includes pulleys A, B, and C with grooves. The groove shape is adapted to the conductor, so that the conductor is clamped on the pulleys. Pulleys A, B, and C form a triangle. Among them, pulleys A and B are located at the upper part of the conductor, and pulley C is located at the lower part of the conductor. A measuring pulley is installed between pulleys A and B. When the wire passes through, it drives the measuring pulley to rotate. A photoelectric encoder is connected to the inside of the measuring pulley. Through the rotation of the pulley, the photoelectric encoder generates a pulse signal, records the rotation angle and frequency of the pulley, and thus calculates the force on the wire. The pulley C and the measuring pulley are equipped with telescopic devices; the bottom of the pulley C is connected to a metal rod, and the metal rod applies an upward thrust through a spring to ensure that the pulley C is in close contact with the wire; a spring is connected to the inside of the measuring pulley to provide elastic force; The integrated monitoring device includes a construction stress model and a wire-laying pulley state model. It is used to monitor the real-time attitude deviation and displacement changes of the wire-laying pulley and traction plate during power transmission line construction, and can execute the following power line construction stress monitoring and early warning methods: A construction stress model and a string laying pulley state model are constructed based on the construction scenario of overhead transmission lines; the construction stress model includes a string laying sag calculation model, a horizontal tension calculation model, and a tension calculation model. The construction parameters of the overhead transmission line are obtained and then fed into the construction stress model to obtain the first set of construction monitoring data; the first set of construction monitoring data includes the horizontal tension and tensile tension of the overhead line at the traction plate; The construction parameters of the overhead transmission line are input into the state model of the stringing pulley to obtain the second set of construction monitoring data; the second set of construction monitoring data includes the load on the stringing pulley, the traction rope envelope angle and the stringing pulley deflection angle. Data analysis was performed on the two sets of construction monitoring data: If both sets of construction monitoring data are within the preset warning range, the construction process is considered normal. If one or more monitoring data points in the two sets of construction monitoring data exceed the preset warning range, it is considered that there is an abnormality in the construction process, and a construction abnormality warning signal is issued.

2. The power line construction stress monitoring and early warning device according to claim 1, characterized in that, The integrated monitoring device also includes: First data acquisition unit; the first data acquisition unit is used to acquire the construction parameters of the overhead transmission line, and send the construction parameters of the overhead transmission line into the construction stress model to obtain the first set of construction monitoring data; the first set of construction monitoring data includes the horizontal tension and tensile tension of the overhead line at the traction plate; The second data acquisition unit is used to input the construction parameters of the overhead transmission line into the state model of the stringing pulley to obtain a second set of construction monitoring data. The second set of construction monitoring data includes the load on the stringing pulley, the traction rope envelope angle, and the stringing pulley deflection angle. Data analysis unit; the data analysis unit is used to perform data analysis on two sets of construction monitoring data: If both sets of construction monitoring data are within the preset warning range, the construction process is considered normal. If one or more monitoring data points in the two sets of construction monitoring data exceed the preset warning range, it is considered that there is an abnormality in the construction process, and a construction abnormality warning signal is issued.

3. The power line construction stress monitoring and early warning device according to claim 1, characterized in that, The overhead transmission line construction scenario includes a conductor reel, from which conductors are led out and introduced into a traction plate after being subjected to a predetermined tension by a tensioning machine. The traction plate pulls the conductors to a laying pulley, and the laying pulley pulls the conductors to a traction machine via a traction rope.

4. The power line construction stress monitoring and early warning device according to claim 1, characterized in that, The sag calculation model for laying out the line is used to represent the coordinates of any point on the transmission line. The sag f and the length of the laying line L; coordinates of any point on the transmission line The equation of the curve is as follows: coordinates of any point on the transmission line The formula for calculating the sag f is as follows: Maximum sag at the center of the gear gap The calculation formula is as follows: The formula for calculating the length L of the laying line is as follows: In the formula, w is the unit weight of the conductor; denoted as the elevation difference angle at coordinate P; H represents the horizontal tension of the overhead line; and l represents the span.

5. The power line construction stress monitoring and early warning device according to claim 4, characterized in that, The horizontal tension calculation model is used to express the horizontal tension of an overhead line in a control span when an obstacle appears in the cable laying span. : In the formula, The height of the left suspension point of the stringing rod relative to the positioning elevation; S represents the relative height of the object being crossed to the left of the positioning elevation; S represents the distance maintained between the line and the apex of the object being crossed.

6. The power line construction stress monitoring and early warning device according to claim 1, characterized in that, The process of constructing the state model of the wire-laying pulley includes: The tension machine, traction machine, and line-feeding pulley are used as nodes of the line-feeding system, and the traction plate is used as a moving node; there are a total of n+1 nodes, of which there are n-1 line-feeding pulleys; The relative height difference between nodes is : Relative span is : In the formula, For the conductor in the i-th segment The length of the traction rope; For the conductor in the i-th segment The horizontal tension of the traction rope; , The wires in the i-th segment are respectively The vertical force on the traction rope at the starting and ending points, where q is a wire Unit weight of the traction rope; EA is the product of cross-sectional area and elastic modulus. Establish a coordinate system centered on the top of the wire-feeding pulley. In this system, the positive Z-axis points vertically upwards, and the X-axis points horizontally on the tension side. The plane... The plane containing the tension side conductor. The plane containing the traction conductor. and The included angle is .

7. A power line construction monitoring platform, characterized in that, The power line construction monitoring platform is connected to the power line construction stress monitoring and early warning device as described in any one of claims 1 to 6; The power line construction monitoring platform also includes a view component, which displays the real-time stress parameters during the power line construction process in the form of visual charts.

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