System for measuring icing thickness of overhead line conductor
Through the overhead line conductor ice thickness measurement system, the inclined sensor and measurement board are used to calculate the conductor ice thickness, which solves the problem of ice detection of transmission lines, improves monitoring accuracy and prevention capabilities, and provides an economical and reliable monitoring solution.
Patent Information
- Application Number
- CN202411325383.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-23
- Publication Date
- 2024-12-20
AI Technical Summary
The power grid accidents caused by the ice-covered transmission lines are difficult to repair in time, causing economic losses and inconvenience in life. The existing technology cannot effectively detect the thickness of the ice-covered circuit.
Design an overhead line wire ice-covered thickness measurement system, including a mounting frame, controller, power module and measuring mechanism, use tilt sensors and measuring board to calculate the wire ice-covered thickness through inclination data, and send data to an external server through wireless communication module .
Accurate measurement of the thickness of ice covering in transmission lines is achieved, the accuracy and prevention capabilities of ice covering monitoring are improved, the impact of extreme weather on the lines is reduced, and a long-term monitoring solution with economical and simple maintenance is provided.
Smart Images
Figure CN119164346A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of circuit detection, and in particular relates to an overhead line conductor ice thickness measurement system. Background Art
[0002] Most transmission lines pass through sparsely populated areas and are often subject to various natural disasters, among which line icing is one of the most serious hazards. Icing of transmission lines is extremely harmful to the power grid. The collapse of towers and poles caused by line icing, line breakage and strand breakage caused by uneven icing / deicing, flashover of insulator strings due to icing, and equipment damage caused by the dancing of transmission lines will cause immeasurable losses to the power system. Affected by factors such as terrain and climate, when power grid accidents caused by icing occur, they are often not repaired in a timely and rapid manner, resulting in long-term power outages in some areas, which not only causes serious economic losses, but also causes inconvenience to residents' daily lives.
[0003] The thickness of ice coating on transmission line conductors needs to be detected to prevent power grid accidents caused by ice coating. For this purpose, the inventor proposes a system for measuring the thickness of ice coating on overhead line conductors. Summary of the invention
[0004] The technical problem to be solved by the present invention is the problem of detecting the ice thickness of the line. In view of the shortcomings of the prior art, an overhead line conductor ice thickness measurement system capable of on-site power supply ice thickness detection is provided. To solve the above technical problem, the technical solution adopted by the present invention is: It includes a mounting frame, a controller, and a power module, a movable mechanism, and a measuring mechanism installed on the mounting frame; Measuring mechanism: comprising a horizontal rotating shaft fixedly arranged beside the conductor, on which a measuring plate is connected; one end of the measuring plate is hinged to the rotating shaft, and the other end is overlapped with the conductor; a tilt sensor is arranged on the measuring plate, and the tilt sensor is used to obtain the angle between the measuring plate and the conductor; the tilt sensor is connected to the controller for communication, a spring is arranged on one side of the measuring plate, and the other end of the spring is installed on the mounting frame; The movable mechanism includes a measuring board pull wire, and the movable mechanism is used to pull the measuring board through the measuring board pull wire to separate it from the wire when the measuring board is not in the measuring state; Controller: used for obtaining the ice thickness of the conductor according to the inclination data of the inclination sensor; Power module: used to provide power Furthermore, two or more groups of measuring mechanisms are arranged around the conductor, and the distance between the rotating axis and the axis of the conductor in each group of measuring mechanisms is equal.
[0005] Furthermore, the movable mechanism also includes a driving gear driven by a motor, the surface of the driving gear is meshed with a gear slide, the gear slide is slidably arranged inside the mounting frame, a traction wheel is installed on one side of the gear slide, a wire guide wheel is installed on one side of the mounting frame, and the gear slide pulls the measuring plate wire through the traction wheel.
[0006] Furthermore, one end of the measuring plate pull wire is connected to the measuring plate, and the other end is wound around the traction wheel after passing the pull wire guide wheel; each set of measuring mechanisms is equipped with a measuring plate pull wire, a pull wire guide wheel and a traction wheel.
[0007] Furthermore, a first tilt sensor is provided on one side of the mounting frame, and the first tilt sensor is used to measure the horizontality of the mounting frame so that the controller can calibrate the ice thickness.
[0008] Furthermore, the controller includes a wireless communication module, and the wireless communication module is used to send the ice thickness collection data to an external server.
[0009] Furthermore, a protective cover is installed on the outside of the mounting frame, and the protective cover is used to protect the power module, the controller, the movable mechanism and the measuring mechanism from ice and snow.
[0010] A method for measuring the ice thickness of an overhead line conductor is based on an overhead line conductor ice thickness measurement system. When there is no ice on the conductor, a measuring plate is overlapped on the conductor, and an angle θ1 between the measuring plate and the conductor is obtained by a tilt sensor. The distance H1 between the rotation axis and the conductor is calculated to be L1*Sinθ1; wherein L1 is the length of the measuring plate; When there is ice on the conductor, the measuring plate is overlapped on the conductor, and the angle θ2 between the measuring plate and the ice on the conductor surface is obtained by the tilt sensor, and the distance H2 between the rotation axis and the ice is calculated as L1*Sinθ2; Then the thickness of ice on the conductor H3 is H1-H2; After the measurement is completed, pull the measuring board to separate it from the wire.
[0011] Compared with the prior art, the present invention has the following beneficial effects: 1. By adopting this method and system, the thickness of ice on the transmission line conductor can be accurately measured using the measuring plate and the tilt sensor, providing a new method for online monitoring of ice on the transmission line, improving the accuracy of ice monitoring, improving the ability of the transmission line to prevent ice disasters, reducing the impact of extreme weather on the transmission line, and ensuring the safe and reliable operation of the transmission line; 2. When the measuring mechanism needs to be moved, the controller starts the motor to drive the driving gear to rotate, and the driving gear drives the gear slide to move. The gear slide moves and drives the first traction wheel and the second traction wheel to move, and then the two sets of measuring plate wires are no longer pulled. Under the tension of the spring, the measuring plate is pulled to rotate around the rotation axis to fit the surface of the ice-covered conductor; the second tilt sensor and the third tilt sensor detect the difference in tilt angles when the transmission line is covered with ice and when it is not covered with ice to obtain the ice thickness of the transmission line. The method of measuring with the tilt sensor can calculate the tilt angle of the detection rod with high precision, thereby calculating the thickness of the ice layer. This method reduces the influence of human errors and external factors such as wind speed and temperature changes on the measurement results, and can provide more reliable and relatively stable data; 3. The method using detection rods and tilt sensors is relatively economical. This method has low equipment costs and simple maintenance, providing a cost-effective solution for long-term monitoring. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] The present invention is further described in detail below in conjunction with the accompanying drawings.
[0013] Figure 1 : A schematic diagram of the structure of the system in Embodiment 1 of the present invention; Figure 2 : A schematic diagram of the pre-ice tilt sensor in Embodiment 1 of the present invention; Figure 3 : A schematic diagram of a tilt sensor after ice coating in Embodiment 1 of the present invention; Among them, 10, measuring mechanism; 11, second tilt sensor; 12, rotating shaft; 13, rotating shaft; 14, measuring plate; 15, spring; 20, movable mechanism; 21, driving gear; 22, gear slide; 23, driven gear; 24, balance wheel; 25, first pulling wheel; 26, second pulling wheel; 27, wire guide wheel; 28, measuring plate wire; 30, controller; 31, wireless communication module; 40, power module; 50, mounting bracket; 52, first tilt sensor. DETAILED DESCRIPTION
[0014] In order to better understand the present invention, the content of the present invention is further clearly described below in conjunction with the embodiments and the accompanying drawings, but the protection content of the present invention is not limited to the following embodiments. In the following description, a large number of specific details are provided to provide a more thorough understanding of the present invention. However, it is obvious to those skilled in the art that the present invention can be implemented without one or more of these details.
[0015] Example 1: See Figure 1, an overhead line conductor ice thickness measurement system of this embodiment includes a controller 30, a mounting frame 50, a power module 40 mounted on the mounting frame 50, a movable mechanism 20, and a measuring mechanism 10; The measuring mechanism 10 includes a rotating shaft 13 fixedly arranged in a horizontal state beside the wire, and a measuring plate 14 is connected to the rotating shaft 13; one end of the measuring plate 14 is hinged to the rotating shaft 13, and the other end is overlapped with the wire; a tilt sensor is arranged on the measuring plate 14, and the tilt sensor is communicated with the controller 30; a spring 15 is arranged on one side of the measuring plate 14, and the other end of the spring 15 is installed on the mounting frame 50; the ice thickness result actually detected by the measuring mechanism is relatively accurate and has a high reference value; The movable mechanism 20 includes a measuring board pull wire 28. The movable mechanism 20 is used to pull the measuring board 14 through the measuring board pull wire 28 to separate it from the wire when not in the measuring state. By setting the movable mechanism 20, it is prevented that the measuring mechanism 10 always keeps in contact with the cable, thereby affecting the detection result, which helps to improve the accuracy of the detection; Controller 30: used to obtain the ice thickness of the conductor according to the inclination data of the tilt sensor. The controller 30 sets different time intervals to automatically detect the ice condition of the conductor, so that the staff can respond in time.
[0016] Power module 40: used to obtain electric energy from the transmission line conductor by induction, and convert it into the voltage required by the system to provide power. Of course, the power module 40 can also adopt other power supply measures such as photovoltaic, wind power, battery, etc.
[0017] See also Figure 1 Two or more measuring mechanisms are arranged around the wire. In this embodiment, a posture sensor is arranged in the tilt sensor, which can measure the angle change between the three axes of XYZ. A group of measuring mechanisms are arranged directly above and below the wire. The distance between the rotating axis and the axis of the wire in each group of measuring mechanisms is equal.
[0018] See also Figure 1The movable mechanism 20 includes a driving gear 21 driven by a motor. When the measuring mechanism 10 needs to be movable, the controller 30 starts the motor to drive the driving gear 21 to rotate. The surface of the driving gear 21 is meshed with a gear slide 22. The gear slide 22 is slidably arranged inside the mounting frame 50. The driving gear 21 drives the gear slide 22 to move. The internal rotation of the mounting frame 50 is provided with a driven gear 23. The gear slide 22 is meshed with the surface of the driven gear 23. The internal rotation of the mounting frame 50 is provided with a balancing wheel 24. The balancing wheel 24 is slidably connected to the top of the gear slide 22. The driven gear 23 and the balancing wheel 24 are used to assist in limiting the gear slide 22 to move along a specific trajectory. A first pulling wheel 25 and a second pulling wheel 26 are installed on one side of the gear slide 22. The movement of the gear slide 22 drives the first pulling wheel 25 and the second pulling wheel 26 to move. Two sets of wire guide wheels 27 are provided on one side of the mounting frame 50. The gear slide 22 pulls the measuring plate wire 28 through the first pulling wheel 25 and the second pulling wheel 26.
[0019] See also Figure 1 The inclination sensors in the two groups of measuring mechanisms 10 are respectively the second inclination sensor 11 and the third inclination sensor 12, one end of one group of measuring plate pull wires 28 is connected to the second inclination sensor 11, and the other end is connected to one group of second pulling wheels 26, one end of one group of measuring plate pull wires 28 is connected to the third inclination sensor 12, and the other end is connected to the first pulling wheel 25 after bypassing two groups of pull wire guide wheels 27, and each group of measuring mechanisms 10 is equipped with a measuring plate pull wire 28, a pull wire guide wheel 27 and a pulling wheel. During measurement, the first pulling wheel 25 and the second pulling wheel 26 move, driving the measuring plate pull wire 28 to move, one group of the measuring plate pull wires 28 no longer pulls the second tilt sensor 11, and under the pulling force of the spring 15, the second tilt sensor 11 and the measuring plate 14 where they are located are rotated around the rotation axis 13 as the center to fit the surface of the ice-covered wire; at the same time, the other group of measuring plate pull wires 28 are connected to the third tilt sensor 12 after changing the pulling direction through two groups of pull wire guide wheels 27, and the first pulling wheel 25 moves and no longer pulls the measuring plate pull wire 28, and no longer pulls the third tilt sensor 12, and under the pulling force of the spring 15, the third tilt sensor 12 and the measuring plate 14 where they are located are rotated around the rotation axis 13 as the center to fit the surface of the ice-covered wire.
[0020] The second tilt sensor 11 and the third tilt sensor 12 detect the difference in tilt angles of the transmission line when it is covered with ice and when it is not covered with ice, and obtain the ice thickness of the transmission line. The tilt sensor measurement method can measure the tilt angle with high accuracy. After calculating with the known measuring plate length and the sine theorem, the tilt angle of the detection rod can be obtained according to the difference before and after ice covering, thereby calculating the thickness of the ice layer.
[0021] See also Figure 1A protective cover is installed on the outside of the mounting frame 50, and the protective cover is used to protect the power module 40, the controller 30, the movable mechanism 20 and the measuring mechanism 10 from ice and snow, so as to prevent ice and snow from entering the protective cover and freezing the internal mechanical structure and making it unable to move.
[0022] See also Figure 1 A first tilt sensor 52 is provided on one side of the mounting frame 50. The first tilt sensor 52 is used to measure the horizontality of the mounting frame 50 and calibrate the measurement data of the measuring mechanism 10. By providing the first tilt sensor 52, angle calibration can be performed when the mounting frame 50 is installed. If the mounting frame 50 is skewed after long-term use, the value of the first tilt angle 52 can be substituted into the calculation for angle compensation calibration.
[0023] See also Figure 1 The controller 30 includes a wireless communication module 31, which is used to send ice thickness collection data to an external server for recording, data tracing, monitoring and trend analysis.
[0024] Beneficial effects: 1. By adopting the method and system provided by this application, the thickness of ice on the transmission line conductor can be accurately measured using a measuring plate and a tilt sensor, providing a new method for online monitoring of ice on the transmission line, improving the accuracy of ice monitoring, improving the ability of the transmission line to prevent ice disasters, reducing the impact of extreme weather on the transmission line, and ensuring the safe and reliable operation of the transmission line.
[0025] 2. When the measuring mechanism 10 needs to be moved, the controller 30 starts the motor to drive the driving gear 21 to rotate, and the driving gear 21 drives the gear slide 22 to move. The movement of the gear slide 22 drives the first pulling wheel 25 and the second pulling wheel 26 to move, and then the two groups of measuring plate pull wires 28 are no longer pulled. One group of measuring plate pull wires 28 no longer pulls the second tilt sensor 11. Under the pulling force of the spring 15, the second tilt sensor 11 and the measuring plate 14 where it is located are rotated around the rotating shaft 13 as the center to fit the surface of the ice-covered wire; at the same time, the other group of measuring plate pull wires 28 are connected to the third tilt sensor 12 after changing the pulling direction through the two groups of pull wire guide wheels 27, and the first pulling wheel 25 moves. The measuring plate wire 28 and the third tilt sensor 12 are no longer pulled, and the third tilt sensor 12 and the measuring plate 14 are pulled under the pulling force of the spring 15 to rotate around the rotating shaft 13 to fit the surface of the ice-covered conductor; the second tilt sensor 11 and the third tilt sensor 12 detect the difference in tilt angles when the transmission line is covered with ice and when it is not covered with ice, and obtain the ice thickness of the transmission line. The tilt sensor measurement method can calculate the tilt angle of the detection rod with high accuracy, thereby calculating the thickness of the ice layer. This method reduces the influence of human errors and external factors such as wind speed and temperature changes on the measurement results, and can provide more reliable and relatively stable data; 3. The method using detection rods and tilt sensors is relatively economical. This method has low equipment cost and simple maintenance, providing a cost-effective solution for long-term monitoring.
[0026] Embodiment 2: A method for measuring the ice thickness of an overhead line conductor is implemented based on the system for measuring the ice thickness of an overhead line conductor as in the embodiment, see Figure 2-3 ,include: The second tilt sensor 11 and the third tilt sensor 12 detect the difference in tilt angles when the transmission line is covered with ice and when it is not covered with ice, and the thickness of the ice on the transmission line is obtained by: The angle θ between the measuring plate and the conductor is obtained by the tilt sensor: like Figure 2 As shown, when there is no ice, an initial angle θ1 between the measuring plate and the conductor can be measured; the distance H1 can be calculated as H1=L1*Sinθ1, where L1 is the length of the measuring plate; like Figure 3 As shown in the figure, when there is ice on the conductor, move the measuring plate to the measured position, the ice will prop up the measuring plate and not touch the conductor, and the angle θ2 between the ice on the conductor surface and the measuring plate can be measured; the distance H2 can be calculated as H2=L1*Sinθ2; From this, the thickness of ice on the conductor H3 can be calculated as: H3=H1-H2.
[0027] Beneficial effects: By accurately measuring the inclination angle and applying the sine function and the length of the measuring plate, a method for accurately calculating the ice thickness is provided, which has a small estimation error and is simple to calculate. The calculation of trigonometric functions can be performed in real time. In conjunction with the tilt sensor and controller to transmit data remotely, the ice thickness can be monitored and the results can be quickly fed back, which is convenient for ice monitoring and rapid information collection.
[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Other modifications or equivalent substitutions made to the technical solution of the present invention by ordinary technicians in the field should be included in the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solution of the present invention.
Claims
1. An overhead line conductor ice thickness measurement system, characterized in that: It comprises a mounting frame (50), a controller (30), a power module (40) mounted on the mounting frame (50), a movable mechanism (20), and a measuring mechanism (10); The measuring mechanism (10) comprises a horizontal rotating shaft (13) fixedly arranged beside the conductor, the rotating shaft (13) being connected to a measuring plate (14); one end of the measuring plate (14) being hinged to the rotating shaft (13), and the other end being overlapped with the conductor; a tilt sensor being arranged on the measuring plate (14), the tilt sensor being used to obtain the angle between the measuring plate (14) and the conductor; the tilt sensor being communicatively connected to a controller (30); a spring (15) being arranged on one side of the measuring plate (14), the other end of the spring (15) being mounted on a mounting frame (50); A movable mechanism (20): comprising a measuring plate pulling wire (28), wherein the movable mechanism (20) is used to pull the measuring plate (14) through the measuring plate pulling wire (28) to separate the measuring plate from the conducting wire in a non-measuring state; A controller (30): used for obtaining the ice thickness of the conductor according to the inclination data of the inclination sensor; Power module (40): used to provide power.
2. The overhead line conductor ice thickness measurement system according to claim 1, characterized in that: Two or more measuring mechanisms are arranged around the conductor, and the distance between the rotating axis and the axis of the conductor in each measuring mechanism is equal.
3. The overhead line conductor ice thickness measurement system according to claim 2, characterized in that: The movable mechanism (20) further comprises a driving gear (21) driven by a motor, a gear slide rail (22) meshing on a surface of the driving gear (21), the gear slide rail (22) being slidably disposed inside a mounting frame (50), a pulling wheel being mounted on one side of the gear slide rail (22), a wire guide wheel (27) being disposed on one side of the mounting frame (50), and the gear slide rail (22) pulling the measuring plate wire (28) via the pulling wheel.
4. The overhead line conductor ice thickness measurement system according to claim 3, characterized in that: One end of the measuring plate cable (28) is connected to the measuring plate (14), and the other end is wound around the traction wheel after passing around the cable guide wheel (27); each set of measuring mechanisms (10) is equipped with a measuring plate cable (28), a cable guide wheel (27) and a traction wheel.
5. The overhead line conductor ice thickness measurement system according to claim 1, characterized in that: A first tilt sensor (52) is provided on one side of the mounting frame (50), and the first tilt sensor (52) is used to measure the horizontality of the mounting frame (50), so that the controller (30) can calibrate the ice thickness.
6. The overhead line conductor ice thickness measurement system according to claim 1, characterized in that: The controller (30) comprises a wireless communication module (31), and the wireless communication module (31) is used to send ice thickness collection data to an external server.
7. The overhead line conductor ice thickness measurement system according to claim 1, characterized in that: A protective cover is installed on the outside of the mounting frame (50), and the protective cover is used to protect the power module (40), the controller (30), the movable mechanism (20), and the measuring mechanism (10) from ice and snow.
8. A method for measuring ice thickness of overhead line conductors, based on the system for measuring ice thickness of overhead line conductors as claimed in claim 1, characterized in that: When there is no ice on the conductor, the measuring board is overlapped on the conductor, and the angle θ1 between the measuring board and the conductor is obtained by the tilt sensor, and the distance H1 between the rotation axis (13) and the conductor is calculated as L1*Sinθ1; wherein L1 is the length of the measuring board; When ice is applied to the conductor, the measuring plate is overlapped on the conductor, and the angle θ2 between the measuring plate and the ice applied on the conductor surface is obtained by the tilt sensor, and the distance H2 between the rotation axis (13) and the ice applied is calculated as L1*Sinθ2; Then the thickness of ice on the conductor H3 is H1-H2; After the measurement is completed, pull the measuring board to separate it from the wire.