Line sag monitoring device for power distribution network and use method of line sag monitoring device

Abstract

The invention discloses a line sag monitoring device for a power distribution network and a use method thereof.The line sag monitoring device comprises a charging base fixedly installed on a tower, an induction device is arranged at the top of the charging base, a connecting base is arranged at the position, located on the side edge of the induction device, of the top of the charging base, and a detection device is arranged on the side edge of the connecting base; according to the scheme, an operator does not need to control the flight of the unmanned aerial vehicle, interference generated in the flight process is avoided, meanwhile, data are automatically stored and transmitted, automatic monitoring is achieved, and the unmanned aerial vehicle is convenient to use. According to the method, the change condition of the dip angle between each sampling point and the initial sampling point at present is analyzed through the background processing system, the background processing system constructs the three-dimensional model again according to each sampling point and compares and analyzes the three-dimensional model with the initial sag, the sag can be quickly and efficiently calculated, the cost is saved, and the efficiency is improved.

Description

Technical Field

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

[0002] The distribution network refers to a power grid that receives electric energy from the transmission network or regional power plants and distributes it locally or step by step according to voltage to various users through distribution facilities. It is composed of overhead lines, cables, towers, distribution transformers, disconnectors, reactive power compensators and some ancillary facilities. It plays an important role in distributing electric energy in the power grid. Due to the large scale, wide coverage and complex terrain environment of the transmission lines, it is necessary to regularly inspect and evaluate the lines. Among them, the sag value of the power line is the main indicator in the design and maintenance of the line. Whether its value is within the design value range will directly affect the safe and stable operation of the line.

[0003] The sag of any point on the transmission line refers to the vertical distance between the 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, and it 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 the drone uses lidar to detect the sag of the line, the operator needs to operate it all the time, and the flight environment requirements for the drone are high, especially in some deep mountains or remote areas with dense trees, which affect the flight of the drone. 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 cannot perform the mission and return automatically. Second, it is limited by the complexity of the flight route. Since a lot of 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. There is no need for an operator to control the flight of a drone, thereby avoiding interference during the flight process. At the same time, data is automatically stored and transmitted to achieve automatic monitoring. 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 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 purpose, 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 arranged on the top of the charging base, a connecting base being arranged on the top of the charging base and located on the side of the sensing device, a detecting device being arranged 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 detecting device being movably sleeved on the outer surface of the connecting cable respectively.

[0007] In a preferred embodiment, the charging base includes a fixed seat, the top of the fixed seat 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 a connecting cable.

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

[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 arranged inside the socket groove, and one side of the top frame is an inclined surface.

[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, and 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 connection 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 arranged inside the connection 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 a wind speed sensor is disposed on the outer surface of the mobile housing.

[0014] In a preferred embodiment, the power supply device includes a base drive box, which is fixedly installed on the bottom of the mobile shell, and connecting grooves and limit holes are opened on both sides of the base drive box, and the base drive box is embedded in the inside of the sleeve groove, and the positions of the connecting groove and the limit hole respectively correspond to the connecting socket and the jack, and the inside of the base drive box is fixedly connected with a power supply module, and the two ends of the inside of the base drive box are fixedly connected with limit rods, 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 arranged, and the inside of the movable plate is fixedly connected with a magnet block, and the side of the movable plate close to the base drive box is fixedly connected with 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 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 to set a certain time period to detect a connection cable through a background control system, or automatically detecting the connection cable through changes in the connection cable;

[0017] S2: Before monitoring the arc 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 meshing 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 also rotates together. When the meter rotates a certain distance, the information of the sampling point is stored in the sub-central processor 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 a certain distance until the mobile shell moves to the middle of the connecting cable, and each point of the connecting cable is used as the initial data. The main central processor 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, thereby calculating the initial arc sag;

[0018] S3: When the sag of the connecting cable changes, the angle of the connection between the connecting cable and the connecting frame will change, the connecting cable will sag, and the movable sleeve will press the movable tube, so that the movable tube passes through the inner rod and presses the force to the surface of the pressure sensor. The pressure sensor uses an electrical signal to make the main central processor control the electromagnet to stop working. At this time, the magnetism between the electromagnet and the magnet block is lost, and the contraction spring is reset, so that the movable plate drives the limit bolt and the connecting plug to contract to the inside of the limit hole and the connecting groove;

[0019] S4: The central processor controls the walking motor to drive the bottom wheel to rotate, and the moving shell moves on the surface of the connecting cable. The moving distance is calculated by the meter. When it moves to the initial collection point, the collection module and the 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 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 inclination 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.

[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 meshes 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 information of the sampling point is stored in the sub-central processing unit through the collection module and the wind speed sensor. 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, thereby avoiding 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 the transmission top wheel rotates 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 overall detection accuracy 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 change in inclination 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 arc sag. The arc sag can be calculated quickly and efficiently, saving costs and improving efficiency.

[0025] 4. The present invention calculates the influence 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 influence 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 source is used to enable the detection device to freely perform automatic detection on the surface of the connecting cable, 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 diagram of the charging base structure of the present invention.

[0029] Figure 3 It is a 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 It is a 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 diagram of the structure of the power supply device of the present invention.

[0034] Figure 8 It is a hardware structure block 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 transmission base; 32. Top frame; 33. Limiting frame; 34. Sleeve groove; 35. Electromagnet; 36. Socket; 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, limit rod; 423, moving plate; 424, contraction spring; 425, connecting groove; 426, limit hole; 427, power module; 428, magnet block; 429, limit bolt; 4210, connecting plug. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

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

[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, and a fixing frame 22 is fixedly connected to the top of the connecting base plate 21, and a movable tube 23 is movably sleeved inside the fixing frame 22, and a connecting head 24 is fixedly connected to the top of the movable tube 23, and a movable sleeve 25 is rotatably mounted on the top of the connecting head 24, and the movable sleeve 25 is movably sleeved on the outer surface of the connecting cable 5, and the top of the connecting base plate 21 is located inside the fixing frame 22 and is fixedly connected to a pressure sensor 28, and an inner rod 27 is fixedly connected to the top of the pressure sensor 28, and a movable sleeve 25 is fixedly connected to the top of the inner rod 27. 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 sags, 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 installed on the top of the fixing base 11, and a top frame 32 is fixedly connected to the top of the charging and transmission base 31, and a limiting frame 33 is fixedly connected to one side of the top frame 32, 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, and 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 arranged inside the socket groove 34, and one side of the top frame 32 is an inclined surface. When the side edge of the top frame 32 is an inclined surface, the two sides of the walking device 41 moving 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, and 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 clamped to the inside of the jack 36, so that the connecting base 3 and the detection device 4 are fixed. At the same time, the connecting plug 4210 is connected to the connecting socket 37, so that the fixing seat 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 a meter meter 418 is fixedly connected to the side of the transmission top wheel 419. 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 arranged to interact with each other. 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, so as to prevent the connecting cable 5 from sliding between the transmission top wheel 419 and the rotating bottom wheel 416, which will cause errors in the detection of the meter meter 418, thereby improving the accuracy of the device detection. The meter meter is the Lanyin Instrument Z96-F meter meter.

[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 arranged inside the connecting block 413, and 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 SICK TMS / TMM22.

[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 connection grooves 425 and limit holes 426. The base drive box 421 is embedded in the inside of the sleeve groove 34. The positions of the connection groove 425 and the limit holes 426 correspond to the connection socket 37 and the socket 36 respectively. The inside of the base drive box 421 is fixedly connected with a power module 427. Both ends of the inside of the base drive box 421 are fixedly connected with limit rods 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 are provided with a contraction spring 424, 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 in the connecting groove 425 and the limiting hole 426, and the connecting plug 4210 and the limiting bolt 429 are respectively embedded and installed in the connecting socket 37 and the jack 36.

[0045] Among them, the power 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, 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 412 respectively, the sub-central processing unit is electrically connected to the walking motor 412, and 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: Control the main central processor to set a certain time period to detect the connection cable 5 through the background control system, or automatically detect the connection cable 5 through the change of the connection cable 5;

[0047] Step 2: Before monitoring the arc 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 mobile shell 411 moves on the surface of the connecting cable 5. Through the meshing of the driving gear 415 and the transmission gear 4112, the rotating bottom wheel 416 rotates, and the transmission top wheel 419 rotates synchronously. At this time, the meter 418 also rotates together. When the meter 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 it to the background processing system through the wireless transmission module, and the background processing system constructs a three-dimensional model according to each sampling point, thereby calculating the initial arc sag;

[0048] Step 3: 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, 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 force to the surface of the pressure sensor 28 through the inner rod 27, and 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;

[0049] Step 4: The sub-CPU controls the travel motor 412 to drive the rotating bottom wheel 416 to rotate, and the mobile housing 411 will move on the surface of the connecting cable 5, and the moving distance will be 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 collect and store the data of each collection point again;

[0050] Step 5: The sub-CPU transmits the currently detected data again through the main CPU and the wireless transmission module to the background processing system. The background processing system analyzes the change in inclination 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. 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 main central processor is controlled by the background control system to set a certain time period to detect the connection cable 5, or the connection cable 5 is automatically detected according to the change of the connection cable 5;

[0052] Before monitoring the arc 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 driving gear 415 is meshed with the transmission gear 4112, and the transmission top wheel 419 rotates synchronously. At this time, the meter 418 also rotates together. When the meter 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, and a three-dimensional model is constructed by the background processing system according to each sampling point, so as to calculate the initial arc sag;

[0053] When the sag arc of the connecting cable 5 changes, the angle of the connection between the connecting cable 5 and the connecting frame 13 will change, the connecting cable 5 will sag, and the movable sleeve 25 will press the movable tube 23, and the pressure sensor 28 will control 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;

[0054] The sub-CPU controls the walking motor 412 to drive the rotating bottom wheel 416 to rotate, and the moving housing 411 will move on the surface of the connecting cable 5, and the moving distance will be 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 collect and store the data of each collection point again;

[0055] 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 inclination of each current sampling point compared with the initial sampling point. The background processing system reconstructs the three-dimensional model according to 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 influence 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, and 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 and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0058] Secondly: In the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

[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 protection scope 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) located 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); 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) comprises 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), wherein the connecting base plate (21) is fixedly mounted on the top of a fixing seat (11), wherein the top of the connecting base plate (21) is fixedly connected to a fixing frame (22), wherein a movable tube (23) is movably sleeved inside the fixing frame (22), wherein the top of the movable tube (23) is fixedly connected to a connecting head (24), wherein a movable sleeve (25) is rotatably mounted on the top of the connecting head (24), wherein the movable sleeve (25) is movably sleeved on the outer surface of the connecting cable (5), and wherein the connecting base plate (21) is fixedly mounted to the fixing frame (22), wherein the fixing frame (2 ... The top of the pressure sensor (21) is located inside the fixed 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 detection spring (26) 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 fixed seat (11).

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 a background processing system. The main central processor is connected to the background processing system via 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. A line sag monitoring device for a distribution network according to claim 1, characterized in that: The connection base (3) comprises 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 connection cable (5), a sleeve 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 sleeve groove (34) and is fixedly connected to an electromagnet (35), both sides of the inner wall of the sleeve groove (34) are provided with a connecting socket (37) and a jack (36), a photoelectric sensor is arranged inside the sleeve groove (34), and one side of the top frame (32) is an inclined surface.

4. A line sag monitoring device for a distribution network according to claim 1, characterized in that: The detection device (4) comprises a walking device (41) and a power supply device (42), wherein the walking device (41) comprises a moving housing (411), a walking motor (412) is fixedly connected to one side of the lower end of the moving housing (411), a rotating bottom wheel (416) rotatably mounted inside the moving housing (411) is arranged on the side of the walking 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 moving housing (411), and the transmission top wheel (419) ) A transmission gear (4112) is fixedly connected to one side corresponding to the rotating bottom wheel (416), 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. A line sag monitoring device for a distribution network according to claim 4, characterized in that: A connecting block (413) is fixedly connected to one side of the mobile housing (411) in the middle of the transmission top wheel (419) and the rotating bottom wheel (416), and a collection module (414) is arranged inside the connecting block (413). The collection module (414) is slidably mounted on the outer surface of the connecting cable (5).

6. A line sag monitoring device for a distribution network according to claim 5, characterized in that: The acquisition module (414) comprises a temperature and humidity sensor and an inclination sensor, and the outer surface of the mobile housing (411) is provided with a wind speed sensor.

7. A line sag monitoring device for a distribution network according to claim 4, characterized in that: The power supply device (42) comprises a base drive box (421), the base drive box (421) is fixedly mounted on the bottom of the mobile housing (411), both sides of the base drive box (421) are provided with connection grooves (425) and limit holes (426), the base drive box (421) is embedded in the inside of the sleeve groove (34), the positions of the connection groove (425) and the limit holes (426) respectively correspond to the connection socket (37) and the socket (36), the inside of the base drive box (421) is fixedly connected with a power module (427), both ends of the inside of the base drive box (421) are fixedly connected with limit rods (422), and the outer surface of the limit rods (422) A movable plate (423) is movably sleeved, and the outer surfaces of both ends of the limiting rod (422) are provided with contraction springs (424) between the movable plate (423) and the base drive box (421). A magnet block (428) is fixedly connected inside the movable plate (423), and a connecting plug (4210) and a limiting bolt (429) are fixedly connected to the side of the movable plate (423) close to the base drive box (421). The connecting plug (4210) and the limiting bolt (429) are movably sleeved inside the connecting groove (425) and the limiting hole (426), respectively, and the connecting plug (4210) and the limiting bolt (429) are respectively embedded and installed inside the connecting socket (37) and the jack (36).

8. A line sag monitoring device for a distribution network according to claim 7, characterized in that: The power module (427) includes a mobile power source 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, and the mobile power source is electrically connected to the sub-central processing unit and the travel motor (412), respectively, and 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 as claimed in 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 to detect the connection cable (5) through the background control system, or automatically detecting the connection cable (5) according to the change of the connection 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). Through the meshing of the driving gear (415) and the transmission gear (4112), the rotating bottom wheel (416) rotates, and 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) is turned. 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). 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, 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, the connecting cable (5) will sag, and the movable sleeve (25) will press the movable tube (23), so that the movable tube (23) passes through the inner rod (27) and applies force to the surface of the pressure sensor (28). The pressure sensor (28) causes the main central processor to control 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, 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 sub-central processing unit controls the walking motor (412) to drive the rotating bottom wheel (416) to rotate, and the moving housing (411) moves on the surface of the connecting cable (5). The moving distance is calculated by the meter (418). When moving 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 currently 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 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. The wind speed sensor and the temperature and humidity sensor calculate the influence of the environment on the sag arc of the connecting cable (5).

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