A line sag monitoring device for distribution network and its use method

Abstract

The present invention discloses a line sag monitoring device for a distribution network and a method for using the same, comprising a charging base fixedly mounted on a pole tower, a sensing device provided on the top of the charging base, a connecting base provided on the top of the charging base on the side of the sensing device, a detection device provided on the side of the connecting base, a connecting cable fixedly connected to the top of the charging base, the sensing device and the detection device are movably sleeved on the outer surface of the connecting cable respectively. With the above scheme, there is no need for an operator to control the flight of a drone, thus avoiding interference during the flight. At the same time, data is automatically stored and transmitted to realize automatic monitoring. The background processing system analyzes the inclination change of each current sampling point compared with the initial sampling point, and the background processing system reconstructs a three-dimensional model based on each sampling point, and compares and analyzes it with the initial sag. The sag can be calculated quickly and efficiently, thus saving costs and improving efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of power system transmission line monitoring, and more particularly to a line sag monitoring device for a distribution network and a method for using the same. Background Art

[0002] A distribution network is a power grid that receives electricity from the transmission grid or regional power plants and distributes it locally or in stages according to voltage to various users through distribution facilities. It is composed of overhead lines, cables, towers, distribution transformers, disconnectors, VAR compensators, and other ancillary facilities, playing a crucial role in distributing electricity within the power grid. Due to the large scale, wide coverage, and complex terrain of transmission lines, regular line inspection and assessment are essential. Power line sag is a key indicator in line design and maintenance; whether it is within the design range directly impacts the safe and stable operation of the line.

[0003] The sag of any point on a transmission line refers to the vertical distance between that point and the line connecting the two hanging points. The sag usually refers to the maximum sag of the power line, which is located in the horizontal middle position between the two hanging points. Traditional sag measurement methods include the midpoint angle method and the end angle method. These methods are complicated and have low accuracy, which is difficult to meet the needs. Therefore, with the continuous development of drone lidar technology, the method of calculating sag through scanning three-dimensional point cloud data has gradually been accepted by users.

[0004] However, since drones use lidar to detect line sag, operators are required to operate them all the time, and the environment requirements for drone flight are high, especially in some deep mountains or remote areas with dense trees, which affect the flight of drones. Therefore, the starting point of the drone flight is far away. First, it is limited by the communication problem between the remote control and the drone. When there are interferences such as houses and mountains between the remote control and the drone, the signal will be lost and the drone will lose contact. The drone will not be able to perform the mission and return automatically. Second, it is limited by the complexity of the flight route. Since more information needs to be collected, the distribution network is subject to greater interference during the flight due to its height and environmental complexity, which affects the accuracy of line sag monitoring. Summary of the Invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a line sag monitoring device for a distribution network and a method for using the same. No operator is required to control the flight of the drone, thus avoiding interference during the flight. At the same time, data is automatically stored and transmitted to achieve automatic monitoring. The background processing system analyzes the inclination changes of each current sampling point and the initial sampling point. The background processing system reconstructs a three-dimensional model based on each sampling point, and compares and analyzes it with the initial sag. The sag can be calculated quickly and efficiently, saving costs and improving efficiency, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a line sag monitoring device for a distribution network, comprising a charging base fixedly mounted on a pole tower, a sensing device being provided on the top of the charging base, a connecting base being provided on the top of the charging base and located on the side of the sensing device, a detection device being provided on the side of the connecting base, a connecting cable being fixedly connected to the top of the charging base, and the sensing device and the detection device being movably sleeved on the outer surface of the connecting cable respectively.

[0007] In a preferred embodiment, the charging base includes a fixed base, the top of the fixed base is fixedly connected to a solar panel, the side of the solar panel is fixedly connected to a connecting plate, the top of the connecting plate is fixedly connected to a connecting frame, and the connecting frame is fixedly connected to one end of the connecting cable.

[0008] In a preferred embodiment, the sensing device includes a connecting base plate, which is fixedly installed on the top of the fixing base, and the top of the connecting base plate is fixedly connected to a fixing frame, and the internal movably sleeve of the fixing frame is provided with a movable tube, and the top of the movable tube is fixedly connected to a connecting head, and a movable sleeve is rotatably installed on the top of the connecting head, and the movable sleeve is movably sleeved on the outer surface of the connecting cable. The top of the connecting base plate is located inside the fixing frame and is fixedly connected to a pressure sensor, and the top of the pressure sensor is fixedly connected to an inner rod, and the top of the pressure sensor is fixedly connected to a detection spring movably sleeved on the outer surface of the inner rod, the top of the detection spring is fixedly connected to the bottom of the movable tube, and the movable tube is movably sleeved on the outer surface of the inner rod, and the pressure sensor is electrically connected to the inside of the fixing base.

[0009] In a preferred embodiment, the fixing base includes an energy storage power supply, a main control system, a GPS device and a wireless transmission module. The energy storage power supply is electrically connected to the solar panel, the wireless transmission module is connected to the background processing system, the main central processor is connected to the background processing system through the wireless transmission module, the main central controller is electrically connected to the energy storage power supply and the GPS device respectively, and the main central controller is electrically connected to the pressure sensor.

[0010] In a preferred embodiment, the connection base includes a charging and transmission base, which is fixedly mounted on the top of the fixing base, and the top of the charging and transmission base is fixedly connected to a top frame, and one side of the top frame is fixedly connected to a limiting frame, and the limiting frame is located on both sides of the connecting cable, and a socket groove is provided on the side of the top of the charging and transmission base away from the limiting frame, and the top of the charging and transmission base is fixedly connected to electromagnets on both sides of the socket groove, and connecting sockets and jacks are provided on both sides of the inner wall of the socket groove, and a photoelectric sensor is provided inside the socket groove, and one side of the top frame is a slope.

[0011] In a preferred embodiment, the detection device includes a walking device and a power supply device, the walking device includes a mobile shell, one side of the lower end of the mobile shell is fixedly connected to a walking motor, the side of the walking motor is provided with a rotating bottom wheel rotatably installed inside the mobile shell, one side of the rotating bottom wheel is fixedly connected to a driving gear, the upper end of the mobile shell is rotatably installed with a transmission top wheel, the side of the transmission top wheel corresponding to the rotating bottom wheel is fixedly connected to a transmission gear, the bottom of the transmission gear is meshed with the outer surface of the driving gear, the outer surface of the rotating bottom wheel is provided with bottom fixed teeth, the outer surface of the transmission top wheel is provided with top fixed teeth, the side of the transmission top wheel is fixedly connected with a meter, the rotating bottom wheel and the transmission top wheel are respectively rotatably installed on the outer surface of the connecting cable.

[0012] In a preferred embodiment, a connecting block is fixedly connected to one side of the mobile housing in the middle of the transmission top wheel and the rotating bottom wheel, and a collection module is provided inside the connecting block. The collection module is slidably mounted on the outer surface of the connecting cable.

[0013] In a preferred embodiment, the acquisition module includes a temperature and humidity sensor and an inclination sensor, and the outer surface of the mobile housing is provided with a wind speed sensor.

[0014] In a preferred embodiment, the power supply device includes a base drive box, the base drive box is fixedly installed at the bottom of the mobile shell, and the base drive box is provided with a connecting groove and a limit hole on both sides of the base drive box, and the base drive box is embedded in the inside of the socket groove, and the positions of the connecting groove and the limit hole respectively correspond to the connection socket and the jack, and the base drive box is fixedly connected to the inside of the power module, and both ends of the base drive box are fixedly connected to the limit rod, and the outer surface of the limit rod is movably sleeved with a movable plate, and the outer surfaces of the two ends of the limit rod are located between the movable plate and the base drive box. A contraction spring is provided, and the inside of the movable plate is fixedly connected to a magnet block, and the side of the movable plate close to the base drive box is fixedly connected to a connecting plug and a limit bolt, and the connecting plug and the limit bolt are respectively movably sleeved in the inside of the connecting groove and the limit hole, and the connecting plug and the limit bolt are respectively embedded in the inside of the connecting socket and the jack.

[0015] In a preferred embodiment, the power supply module includes a mobile power supply and a sub-central processing unit, the sub-central processing unit is electrically connected to the wind speed sensor, the temperature and humidity sensor and the inclination sensor respectively, the mobile power supply is electrically connected to the sub-central processing unit and the walking motor respectively, and the sub-central processing unit is electrically connected to the walking motor.

[0016] A method for using a line sag monitoring device for a distribution network comprises the following steps: S1: controlling a main central processor through a background control system to set a certain time period for detecting connecting cables, or automatically detecting connecting cables according to changes in the connecting cables;

[0017] S2: Before monitoring the sag, the travel motor is started through the power module, so that the rotating bottom wheel rotates on the surface of the connecting cable, and the mobile shell moves on the surface of the connecting cable. Through the engagement of the driving gear and the transmission gear, the rotating bottom wheel rotates while the transmission top wheel rotates synchronously. At this time, the meter counter also rotates together. When the meter counter rotates a certain distance, the information of the sampling point is stored in the sub-central processing unit through the acquisition module and the wind speed sensor. When the mobile shell moves on the surface of the connecting cable, the connecting cable is collected at intervals until the mobile shell moves to the middle of the connecting cable. Each point of the connecting cable is used as initial data, and the main central processing unit transmits it to the background processing system through the wireless transmission module. The background processing system constructs a three-dimensional model according to each sampling point to calculate the initial sag;

[0018] S3: When the sag of the connecting cable changes, the angle at the connection between the connecting cable and the connecting frame will change, causing the connecting cable to sag, and the movable sleeve to press the movable tube. The movable tube, through the inner rod, applies force to the surface of the pressure sensor. The pressure sensor transmits an electrical signal to the main central processor to control the electromagnet to stop working. At this time, the magnetism between the electromagnet and the magnet block is lost, and the contraction spring returns to its original position, causing the movable plate to drive the limit bolt and the connecting plug to retract into the limit hole and the connecting slot.

[0019] S4: The central processing unit controls the travel motor to drive the bottom wheel to rotate. The mobile shell moves on the surface of the connecting cable, and the distance moved is calculated by the meter. When it moves to the initial collection point, the collection module and wind speed sensor will sample the data again, and the data of each collection point will be collected and stored again.

[0020] S5: The sub-CPU transmits the current detection data again through the main CPU and the wireless transmission module to the background processing system. The background processing system analyzes the inclination change of each current sampling point and the initial sampling point. The background processing system reconstructs the three-dimensional model based on each sampling point, and compares and analyzes it with the initial arc sag. At the same time, the wind speed sensor and the temperature and humidity sensor are used to calculate the impact of the environment on the sag of the connecting cable.

[0021] Technical effects and advantages of the present invention:

[0022] 1. The present invention moves the mobile shell on the surface of the connecting cable, and the driving gear engages with the transmission gear to make the transmission top wheel rotate synchronously. At this time, the meter counter also rotates together. When the meter counter rotates a certain distance, the collection module and the wind speed sensor store the information of the sampling point in the sub-central processing unit. When the mobile shell moves on the surface of the connecting cable, the connecting cable is collected at a certain distance until the mobile shell moves to the middle of the connecting cable. There is no need for an operator to control the flight of the drone, which avoids interference during the flight process. At the same time, the data is automatically stored and transmitted to achieve automatic monitoring.

[0023] 2. The present invention uses the interaction between the top fixed teeth and the bottom fixed teeth to drive the driving gear to rotate through the bottom fixed teeth, and causes the transmission top wheel to rotate accordingly. The top fixed teeth and the bottom fixed teeth fix the two sides of the connecting cable, thereby preventing the connecting cable from sliding between the transmission top wheel and the rotating bottom wheel, which would cause errors in the meter detection, thereby improving the accuracy of the overall detection of the device.

[0024] 3. The present invention uses a sub-CPU to transmit the currently detected data through the main CPU and a wireless transmission module to the background processing system. The background processing system analyzes the inclination change of each current sampling point compared with the initial sampling point. The background processing system reconstructs a three-dimensional model based on each sampling point, and compares and analyzes it with the initial arc sag. The arc sag can be calculated quickly and efficiently, saving costs and improving efficiency.

[0025] 4. The present invention calculates the impact of the environment on the sag of the connecting cable by setting up wind speed sensors and temperature and humidity sensors, performs environmental monitoring on the sampling points, and then facilitates the analysis of the impact of the environment on the sag of the line, which can effectively improve the reliability and accuracy of sag monitoring of the transmission line.

[0026] 5. The present invention provides a solar panel to continuously provide power to the device. At the same time, the internal mobile power supply is used to enable the detection device to automatically detect the surface of the connecting cable freely, so that the device can achieve periodic automatic detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0028] Figure 2 It is a schematic structural diagram of the charging base of the present invention.

[0029] Figure 3 Schematic diagram of the structure of the sensing device of the present invention.

[0030] Figure 4 It is a schematic diagram of the connection base structure of the present invention.

[0031] Figure 5 Schematic diagram of the structure of the detection device of the present invention.

[0032] Figure 6 It is a schematic structural diagram of the walking device of the present invention.

[0033] Figure 7 It is a schematic structural diagram of the power supply device of the present invention.

[0034] Figure 8 This is a hardware structure diagram of the present invention.

[0035] The accompanying drawings are marked as follows: 1. Charging base; 2. Sensing device; 3. Connecting base; 4. Detection device; 5. Connecting cable; 11. Fixing seat; 12. Connecting plate; 13. Connecting frame; 14. Solar panel; 21. Connecting bottom plate; 22. Fixing frame; 23. Movable tube; 24. Connecting head; 25. Movable sleeve; 26. Detection spring; 27. Inner rod; 28. Pressure sensor; 31. Charging and transmission base; 32. Top frame; 33. Limiting frame; 34. Socket groove; 35. Electromagnet; 36. Jack; 37. Connecting socket; 41. Walking device; 42 , power supply device; 411, mobile shell; 412, walking motor; 413, connecting block; 414, acquisition module; 415, driving gear; 416, rotating bottom wheel; 417, bottom fixed tooth; 418, meter; 419, transmission top wheel; 4110, top fixed tooth; 4112, transmission gear; 421, base drive box; 422, limiting rod; 423, moving plate; 424, contraction spring; 425, connecting groove; 426, limiting hole; 427, power module; 428, magnet block; 429, limiting bolt; 4210, connecting plug. DETAILED DESCRIPTION

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0037] As attached Figure 1-3 The line sag monitoring device for a distribution network shown in the figure includes a charging base 1 fixedly mounted on a pole tower, a sensing device 2 is provided on the top of the charging base 1, a connecting base 3 is provided on the top of the charging base 1 on the side of the sensing device 2, a detection device 4 is provided on the side of the connecting base 3, a connecting cable 5 is fixedly connected to the top of the charging base 1, and the sensing device 2 and the detection device 4 are respectively movably sleeved on the outer surface of the connecting cable 5.

[0038] Among them, the charging base 1 includes a fixed base 11, the top of the fixed base 11 is fixedly connected to a solar panel 14, the side of the solar panel 14 is fixedly connected to a connecting plate 12, the top of the connecting plate 12 is fixedly connected to a connecting frame 13, and the connecting frame 13 is fixedly connected to one end of the connecting cable 5.

[0039] The sensing device 2 includes a connecting base plate 21, which is fixedly mounted on the top of the fixing seat 11. The top of the connecting base plate 21 is fixedly connected to a fixing frame 22. The internal movable sleeve of the fixing frame 22 is movably connected to a movable tube 23. The top of the movable tube 23 is fixedly connected to a connecting head 24. The top of the connecting head 24 is rotatably mounted with a movable sleeve 25. The movable sleeve 25 is movably sleeved on the outer surface of the connecting cable 5. The top of the connecting base plate 21 is located inside the fixing frame 22 and is fixedly connected to a pressure sensor 28. The top of the pressure sensor 28 is fixedly connected to an inner rod 27. The top of the pressure sensor 28 is fixedly connected to a movable sleeve 25. The detection spring 26 on the outer surface of the rod 27, the top of the detection spring 26 is fixedly connected to the bottom of the movable tube 23, the movable tube 23 is movably sleeved on the outer surface of the inner rod 27, the pressure sensor 28 is electrically connected to the inside of the fixed seat 11, and the inner rod 27 is set. When the movable sleeve 25 is subjected to the gravity when the connecting cable 5 droops, the movable tube 23 will drop, and the inner rod 27 will generate pressure on the pressure sensor 28, thereby causing the pressure sensor 28 to sense and transmit the electrical signal to the main central processor for control. The pressure sensor is Siemens 7MF1567, and the wind speed sensor is Siemens wind speed sensor QVM62.1-HE.

[0040] As attached Figure 4As shown, the connection base 3 includes a charging and transmission base 31, which is fixedly mounted on the top of the fixing base 11, and the top of the charging and transmission base 31 is fixedly connected to a top frame 32, and one side of the top frame 32 is fixedly connected to a limiting frame 33, and the limiting frame 33 is located on both sides of the connecting cable 5. A socket groove 34 is provided on the side of the top of the charging and transmission base 31 away from the limiting frame 33, and an electromagnet 35 is fixedly connected to the top of the charging and transmission base 31 on both sides of the socket groove 34. A connecting socket 37 and a jack 36 are provided on both sides of the inner wall of the socket groove 34, and a photoelectric sensor is provided inside the socket groove 34. One side of the top frame 32 is a slope. When the side of the top frame 32 is a slope, the two sides of the walking device 41 that moves into the socket groove 34 are positioned, so that the walking device 41 is automatically positioned to the socket groove 34 during the movement of the surface of the connecting cable 5. In addition, the limit frame 33 limits the two ends of the connecting cable 5 to prevent the detection device 4 moving on the surface of the connecting cable 5 from being separated from the position of the connecting base 3. When the photoelectric sensor inside the socket groove 34 senses the power supply device 42, it transmits the signal to the main central processor. The main central processor starts the electromagnet 35 to adsorb the magnet block 428 inside the base drive box 421, so that the limit bolt 429 and the connecting plug 4210 extend from the inside of the limit hole 426 and the connecting groove 425 respectively, and are respectively inserted into the inside of the jack 36 and the connecting socket 37. The limit bolt 429 is snapped into the inside of the jack 36 to fix the connecting base 3 and the detection device 4. At the same time, the connecting plug 4210 is connected to the connecting socket 37, so that the fixing base 11 charges the power module 427 and transmits data to each other. The photoelectric sensor is SICK G6.

[0041] As attached Figure 5-6As shown, the detection device 4 includes a walking device 41 and a power supply device 42. The walking device 41 includes a mobile shell 411. One side of the lower end of the mobile shell 411 is fixedly connected to a walking motor 412. The side of the walking motor 412 is provided with a rotating bottom wheel 416 rotatably installed inside the mobile shell 411. One side of the rotating bottom wheel 416 is fixedly connected to a driving gear 415. The upper end of the mobile shell 411 is rotatably installed with a transmission top wheel 419. The side of the transmission top wheel 419 corresponding to the rotating bottom wheel 416 is fixedly connected to a transmission gear 4112. The bottom of the transmission gear 4112 is meshed with the outer surface of the driving gear 415. The outer surface of the rotating bottom wheel 416 is provided with a bottom fixed tooth 417. The outer surface of the transmission top wheel 419 The surface is provided with a top fixed tooth 4110, and the side of the transmission top wheel 419 is fixedly connected with a meter counter 418. The rotating bottom wheel 416 and the transmission top wheel 419 are respectively rotatably installed on the outer surface of the connecting cable 5. The top fixed tooth 4110 and the bottom fixed tooth 417 are provided to interact with each other, and the driving gear 415 is driven to rotate by the bottom fixed tooth 417, and the transmission top wheel 419 is rotated accordingly. The top fixed tooth 4110 and the bottom fixed tooth 417 fix the two sides of the connecting cable 5, thereby preventing the connecting cable 5 from sliding between the transmission top wheel 419 and the rotating bottom wheel 416, which may cause errors in the detection of the meter counter 418, thereby improving the accuracy of the device detection. The meter counter is the Lanyin Instrument Z96-F meter counter.

[0042] Among them, a connecting block 413 is fixedly connected to one side of the mobile shell 411 in the middle of the transmission top wheel 419 and the rotating bottom wheel 416, and a collection module 414 is provided inside the connecting block 413. The collection module 414 is slidably installed on the outer surface of the connecting cable 5.

[0043] Among them, the acquisition module 414 includes a temperature and humidity sensor and an inclination sensor. The outer surface of the mobile shell 411 is provided with a wind speed sensor. The temperature and humidity sensor is the fourth-generation ultra-small volume temperature and humidity sensor SHT40 of Sensirion, and the inclination sensor is TMS / TMM22 of SICK.

[0044] As attached Figure 5 and 7As shown, the power supply device 42 includes a base drive box 421, which is fixedly installed at the bottom of the mobile housing 411. Both sides of the base drive box 421 are provided with a connection groove 425 and a limit hole 426. The base drive box 421 is embedded in the interior of the socket groove 34. The positions of the connection groove 425 and the limit hole 426 correspond to the connection socket 37 and the jack 36 respectively. The interior of the base drive box 421 is fixedly connected to a power module 427. Both ends of the interior of the base drive box 421 are fixedly connected to a limit rod 422. The outer surface of the limit rod 422 is movable. A movable sleeve is connected with a movable plate 423, and the outer surfaces of both ends of the limit rod 422 are located between the movable plate 423 and the base drive box 421 and a contraction spring 424 is provided. The interior of the movable plate 423 is fixedly connected with a magnet block 428, and the side of the movable plate 423 close to the base drive box 421 is fixedly connected with a connecting plug 4210 and a limiting bolt 429. The connecting plug 4210 and the limiting bolt 429 are respectively movably sleeved inside the connecting groove 425 and the limiting hole 426, and the connecting plug 4210 and the limiting bolt 429 are respectively embedded in the connecting socket 37 and the jack 36.

[0045] Among them, the power supply module 427 includes a mobile power supply and a sub-central processing unit. The sub-central processing unit is electrically connected to the wind speed sensor, temperature and humidity sensor, and tilt sensor respectively. The mobile power supply is electrically connected to the sub-central processing unit and the walking motor 412 respectively. The sub-central processing unit is electrically connected to the walking motor 412. The sub-central processing unit is an STM32 microcontroller.

[0046] As attached Figure 1-8 The method for using the line sag monitoring device for a distribution network shown includes the following steps: Step 1: controlling the main central processor through the background control system to set a certain time period to detect the connecting cable 5, or automatically detecting the connecting cable 5 based on the changes in the connecting cable 5;

[0047] Step 2: Before monitoring the sag, the travel motor 412 is started through the power supply module 427, so that the rotating bottom wheel 416 rotates on the surface of the connecting cable 5, and the mobile shell 411 moves on the surface of the connecting cable 5. Through the engagement of the driving gear 415 and the transmission gear 4112, the rotating bottom wheel 416 rotates while the transmission top wheel 419 rotates synchronously. At this time, the meter counter 418 also rotates together. When the meter counter 418 rotates a certain distance, the information of the sampling point is stored in the sub-central processing unit through the acquisition module 414 and the wind speed sensor. When the mobile shell 411 moves on the surface of the connecting cable 5, the connecting cable 5 is collected at intervals until the mobile shell 411 moves to the middle of the connecting cable 5, and each point of the connecting cable 5 is used as initial data. The main central processing unit transmits the data to the background processing system through the wireless transmission module. The background processing system constructs a three-dimensional model according to each sampling point to calculate the initial sag;

[0048] Step 3: When the sag of the connecting cable 5 changes, the angle at the connection between the connecting cable 5 and the connecting frame 13 will change, and the connecting cable 5 will sag, causing the movable sleeve 25 to press the movable tube 23, so that the movable tube 23, through the inner rod 27, applies force to the surface of the pressure sensor 28. The pressure sensor 28 controls the electromagnet 35 to stop working through an electrical signal. At this time, the magnetism between the electromagnet 35 and the magnet block 428 is lost, and the contraction spring 424 is reset, causing the movable plate 423 to drive the limit bolt 429 and the connecting plug 4210 to retract into the limit hole 426 and the connecting groove 425.

[0049] Step 4: The central processing unit controls the travel motor 412 to drive the bottom wheel 416 to rotate, and the mobile housing 411 moves on the surface of the connecting cable 5. The distance moved is calculated by the meter 418. When it moves to the initial collection point, the collection module 414 and the wind speed sensor will sample the data again, and the data of each collection point will be collected and stored again;

[0050] Step 5: The sub-CPU transmits the currently detected data to the background processing system through the main CPU and the wireless transmission module. The background processing system analyzes the change in the inclination angle of each current sampling point compared with the initial sampling point. The background processing system reconstructs a three-dimensional model based on each sampling point, and compares and analyzes it with the initial sag. At the same time, the wind speed sensor and the temperature and humidity sensor are used to calculate the impact of the environment on the sag of the connecting cable 5.

[0051] The working principle and use process of the present invention are as follows: the background control system controls the main central processor to set a certain time period to detect the connection cable 5, or automatically detects the connection cable 5 according to the changes of the connection cable 5;

[0052] Before monitoring the sag, the travel motor 412 is started through the power module 427 to move the mobile housing 411 on the surface of the connecting cable 5. The transmission top wheel 419 rotates synchronously through the engagement of the driving gear 415 and the transmission gear 4112. At this time, the meter counter 418 also rotates together. When the meter counter 418 rotates a certain distance, the information of the sampling point is stored in the sub-central processing unit through the acquisition module 414 and the wind speed sensor. When the mobile housing 411 moves on the surface of the connecting cable 5, the connecting cable 5 is collected at intervals until the mobile housing 411 moves to the middle of the connecting cable 5, and each point of the connecting cable 5 is used as initial data. Finally, it is transmitted to the background processing system through the main central processing unit through the wireless transmission module. The background processing system constructs a three-dimensional model according to each sampling point to calculate the initial sag;

[0053] When the sag of the connecting cable 5 changes, the angle at which the connecting cable 5 is connected to the connecting frame 13 will change, causing the connecting cable 5 to sag, and the movable sleeve 25 to press the movable tube 23. The pressure sensor 28 transmits an electrical signal to the main central processor to stop the electromagnet 35. At this time, the magnetism between the electromagnet 35 and the magnet block 428 is lost, and the contraction spring 424 is reset, causing the movable plate 423 to drive the limit bolt 429 and the connecting plug 4210 to retract into the limiting hole 426 and the connecting groove 425.

[0054] The sub-CPU controls the travel motor 412 to drive the rotating bottom wheel 416 to rotate, and the mobile housing 411 moves on the surface of the connecting cable 5. The distance moved is calculated by the meter 418. When it moves to the initial collection point, the collection module 414 and the wind speed sensor will sample the data again, and the data of each collection point will be collected and stored again.

[0055] The sub-CPU again transmits the current detection data to the background processing system through the main CPU and the wireless transmission module. The background processing system analyzes the inclination change of each current sampling point compared with the initial sampling point. The background processing system reconstructs the three-dimensional model based on each sampling point, and compares and analyzes it with the initial arc sag. At the same time, the wind speed sensor and the temperature and humidity sensor are used to calculate the impact of the environment on the sag of the connecting cable 5.

[0056] After the detection is completed, when the photoelectric sensor inside the socket slot 34 senses the power supply device 42, it transmits the signal to the main central processor. The main central processor starts the electromagnet 35 to adsorb the magnet block 428 inside the base drive box 421, so that the limit bolt 429 and the connecting plug 4210 extend from the inside of the limit hole 426 and the connecting slot 425 respectively, and are respectively inserted into the inside of the jack 36 and the connecting socket 37.

[0057] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense, and may refer to mechanical or electrical connections, internal communication between two components, or direct connection. "Up," "down," "left," and "right" are only used to indicate relative positional relationships. When the absolute positions of the objects being described change, the relative positional relationships may also change.

[0058] Secondly: The drawings of the embodiments disclosed in the present invention only involve structures related to the embodiments disclosed in the present invention. Other structures may refer to conventional designs. The same embodiment and different embodiments of the present invention may be combined with each other without conflict.

[0059] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A line sag monitoring device for a distribution network, comprising a charging base (1) fixedly mounted on a tower, characterized in that: The top of the charging base (1) is provided with a sensing device (2), the top of the charging base (1) is provided with a connecting base (3) on the side of the sensing device (2), the side of the connecting base (3) is provided with a detecting device (4), the top of the charging base (1) is fixedly connected with a connecting cable (5), and the sensing device (2) and the detecting device (4) are respectively movably sleeved on the outer surface of the connecting cable (5); The charging base (1) includes a fixing seat (11), the top of the fixing seat (11) is fixedly connected to a solar panel (14), the side of the solar panel (14) is fixedly connected to a connecting plate (12), the top of the connecting plate (12) is fixedly connected to a connecting frame (13), and the connecting frame (13) is fixedly connected to one end of a connecting cable (5); The sensing device (2) comprises a connecting base plate (21), the connecting base plate (21) is fixedly mounted on the top of the fixing seat (11), the top of the connecting base plate (21) is fixedly connected to a fixing frame (22), the interior of the fixing frame (22) is movably sleeved with a movable tube (23), the top of the movable tube (23) is fixedly connected to a connector (24), the top of the connector (24) is rotatably mounted with a movable sleeve (25), the movable sleeve (25) is movably sleeved on the outer surface of the connecting cable (5), and the connecting base plate ( The top of the fixing bracket (21) is located inside the fixing bracket (22) and is fixedly connected to a pressure sensor (28), the top of the pressure sensor (28) is fixedly connected to the inner rod (27), the top of the pressure sensor (28) is fixedly connected to a detection spring (26) that is movably sleeved on the outer surface of the inner rod (27), the top of the detection spring (26) is fixedly connected to the bottom of the movable tube (23), the movable tube (23) is movably sleeved on the outer surface of the inner rod (27), and the pressure sensor (28) is electrically connected to the inside of the fixing bracket (11); The detection device (4) includes a walking device (41) and a power supply device (42), wherein the walking device (41) includes a movable housing (411); a connecting block (413) is fixedly connected to one side of the movable housing (411) between a transmission top wheel (419) and a rotating bottom wheel (416); a collection module (414) is provided inside the connecting block (413); the collection module (414) includes a temperature and humidity sensor and an inclination sensor; The power supply device (42) comprises a base drive box (421), both sides of which are provided with connection grooves (425) and limit holes (426), both ends of the interior of the base drive box (421) are fixedly connected to limit rods (422), the outer surface of the limit rod (422) is movably sleeved with a movable plate (423), and the outer surfaces of both ends of the limit rod (422) are provided with contraction springs (424) located between the movable plate (423) and the base drive box (421), the interior of the movable plate (423) is fixedly connected to a magnet block (428), and the side of the movable plate (423) close to the base drive box (421) is fixedly connected to a connection plug (4210) and a limit bolt (429), and the connection plug (4210) and the limit bolt (429) are movably sleeved inside the connection groove (425) and the limit hole (426), respectively.

2. A line sag monitoring device for a distribution network according to claim 1, characterized in that: The fixing seat (11) includes an energy storage power supply, a main control system, a GPS device and a wireless transmission module. The energy storage power supply is electrically connected to the solar panel (14). The wireless transmission module is connected to the background processing system. The main central processing unit is connected to the background processing system through the wireless transmission module. The main central controller is electrically connected to the energy storage power supply and the GPS device respectively. The main central controller is electrically connected to the pressure sensor (28).

3. The line sag monitoring device for a distribution network according to claim 1, characterized in that: The connecting base (3) includes a charging transmission base (31), the charging transmission base (31) is fixedly mounted on the top of the fixing base (11), the top of the charging transmission base (31) is fixedly connected to a top frame (32), one side of the top frame (32) is fixedly connected to a limiting frame (33), the limiting frame (33) is located on both sides of the connecting cable (5), a socket groove (34) is provided on the top of the charging transmission base (31) away from the limiting frame (33), the top of the charging transmission base (31) is located on both sides of the socket groove (34) and is fixedly connected to an electromagnet (35), both sides of the inner wall of the socket groove (34) are provided with a connecting socket (37) and a jack (36), a photoelectric sensor is provided inside the socket groove (34), and one side of the top frame (32) is an inclined surface.

4. The line sag monitoring device for a distribution network according to claim 1, characterized in that: A travel motor (412) is fixedly connected to one side of the lower end of the mobile housing (411), a rotating bottom wheel (416) rotatably mounted inside the mobile housing (411) is provided on the side of the travel motor (412), a driving gear (415) is fixedly connected to one side of the rotating bottom wheel (416), a transmission top wheel (419) is rotatably mounted on the upper end of the mobile housing (411), and a transmission gear is fixedly connected to the side of the transmission top wheel (419) corresponding to the rotating bottom wheel (416). (4112), the bottom of the transmission gear (4112) is meshed with the outer surface of the driving gear (415), the outer surface of the rotating bottom wheel (416) is provided with bottom fixed teeth (417), the outer surface of the transmission top wheel (419) is provided with top fixed teeth (4110), the side of the transmission top wheel (419) is fixedly connected with a meter (418), and the rotating bottom wheel (416) and the transmission top wheel (419) are respectively rotatably mounted on the outer surface of the connecting cable (5).

5. The line sag monitoring device for a distribution network according to claim 4, characterized in that: The acquisition module (414) is slidably mounted on the outer surface of the connecting cable (5).

6. The line sag monitoring device for a distribution network according to claim 5, characterized in that: A wind speed sensor is provided on the outer surface of the mobile housing (411).

7. The line sag monitoring device for a distribution network according to claim 3, characterized in that: The base drive box (421) is fixedly mounted on the bottom of the mobile housing (411). The base drive box (421) is embedded in the interior of the sleeve groove (34). The positions of the connection groove (425) and the limiting hole (426) correspond to the connection socket (37) and the jack (36), respectively. The interior of the base drive box (421) is fixedly connected to the power module (427). The connection plug (4210) and the limiting bolt (429) are embedded in the interior of the connection socket (37) and the jack (36), respectively.

8. The line sag monitoring device for a distribution network according to claim 7, characterized in that: The power supply module (427) includes a mobile power supply and a sub-central processing unit, wherein the sub-central processing unit is electrically connected to the wind speed sensor, the temperature and humidity sensor, and the tilt sensor, respectively. The mobile power supply is electrically connected to the sub-central processing unit and the travel motor (412), respectively. The sub-central processing unit is electrically connected to the travel motor (412).

9. A method for using the line sag monitoring device for a distribution network according to any one of claims 1 to 8, characterized in that: The steps include: S1: controlling the main central processor to set a certain time period for detecting the connecting cable (5) through the background control system, or automatically detecting the connecting cable (5) according to the change of the connecting cable (5); S2: Before monitoring the sag, the travel motor (412) is started through the power module (427), so that the rotating bottom wheel (416) rotates on the surface of the connecting cable (5), and the movable housing (411) moves on the surface of the connecting cable (5). By meshing the driving gear (415) with the transmission gear (4112), the rotating bottom wheel (416) rotates while the transmission top wheel (419) rotates synchronously. At this time, the meter counter (418) also rotates together. When the meter counter (418) rotates a certain distance, the meter counter (418) rotates. The information of the sampling points is stored in the sub-central processing unit through the acquisition module (414) and the wind speed sensor. When the mobile housing (411) moves on the surface of the connecting cable (5), the connecting cable (5) is collected at intervals until the mobile housing (411) moves to the middle of the connecting cable (5). Each point of the connecting cable (5) is used as initial data. The main central processing unit transmits the data to the background processing system through the wireless transmission module. The background processing system constructs a three-dimensional model based on each sampling point, thereby calculating the initial arc sag; S3: When the sag of the connecting cable (5) changes, the angle of the connection between the connecting cable (5) and the connecting frame (13) will change, and the connecting cable (5) will sag, and the movable sleeve (25) will press the movable tube (23), so that the movable tube (23) presses the surface of the pressure sensor (28) through the inner rod (27). The pressure sensor (28) controls the main central processor to stop the electromagnet (35) through an electrical signal. At this time, the magnetism between the electromagnet (35) and the magnet block (428) is lost, and the contraction spring (424) is reset, so that the movable plate (423) drives the limit bolt (429) and the connecting plug (4210) to contract to the inside of the limit hole (426) and the connecting groove (425); S4: The central processing unit controls the travel motor (412) to drive the rotating bottom wheel (416) to rotate, and the mobile housing (411) moves on the surface of the connecting cable (5). The distance moved is calculated by the meter (418). When the mobile housing moves to the initial collection point, the collection module (414) and the wind speed sensor will sample the data again, and the data of each collection point will be collected and stored again; S5: The sub-CPU transmits the detected data to the background processing system through the main CPU and the wireless transmission module. The background processing system analyzes the change of the inclination angle of each sampling point and the initial sampling point. The background processing system reconstructs a three-dimensional model based on each sampling point, and compares and analyzes it with the initial sag. The wind speed sensor and the temperature and humidity sensor are used to calculate the influence of the environment on the sag of the connecting cable (5).

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