An intelligent fault monitoring device for three-span area overhead transmission lines

Abstract

The invention relates to an intelligent fault monitoring device for a three-span area overhead transmission line, comprising a mobile monitoring module and a fixed monitoring module; the fixed monitoring module is installed on a pole tower, and a telephoto camera is used to take photos of the transmission line, and the transmission line is rotated and photographed by rotating the telephoto camera, so as to more comprehensively monitor the fault point and reduce the interference of ground objects on the photos; the telephoto camera is swung during the rotation process, so as to take reciprocating photos of the near end and the far end of the transmission line, so as to overcome the disadvantage of the small photographing range of the telephoto camera and realize all-round monitoring of the transmission line; the mobile monitoring module moves on the transmission line, and the transmission line is inspected by the mobile camera; and the arranged clamping walking mechanism can realize the avoidance of the current transformer and the hanging point position during walking, and make the mobile camera always face the forward direction, so as to realize accurate monitoring of the transmission line.

Description

Technical Field

[0001] The present invention relates to the technical field of power transmission line fault detection, and in particular to an intelligent fault monitoring device for a three-span regional overhead power transmission line. Background Art

[0002] Transmission lines are widely used and extremely important equipment in power grids. They are used to transmit electricity from the power supply end to the power consumption end. During the operation of the power grid, it is necessary to monitor the operation faults of the transmission lines.

[0003] With the continuous upgrading of power grids and transportation infrastructure, the phenomenon of three-span transmission lines is becoming more and more frequent. Three-span transmission lines refer to transmission lines crossing high-speed railways, highways, and important transmission channels. The safety of overhead transmission lines in three-span areas needs to be paid great attention. If not handled properly, it may lead to major public safety and power grid safety incidents, which are of great harm and have a huge impact on the national economy and people's livelihood. Therefore, the monitoring needs of overhead transmission lines in three-span areas are particularly important.

[0004] The invention patent with publication number CN106546874A discloses a remote fault point judgment system for a transmission line based on a camera, which realizes fault monitoring of the transmission line through a camera. Of course, the commonly used means at present is also to monitor the fault of the transmission line through a camera, but there are still certain disadvantages. For example, the camera is generally installed on the tower to monitor the transmission line in the middle part of the two towers. The length of this section of the transmission line is very long. If a short-focus camera is used, it can meet the coverage of the entire line. However, due to the wide field of view, the shooting of the transmission line is not clear, and the details of the transmission line cannot be observed, and the monitoring effect is not good. If a telephoto camera is used, although a clearer image of the transmission line can be taken, the coverage range is small and the monitoring of the entire transmission line cannot be realized. In order to realize the monitoring of the entire line, a short-focus camera is currently generally used.

[0005] In addition, currently the camera can only shoot from one side of the transmission line. At the same time, in order to prevent debris from falling onto the camera lens, the camera is usually set above the transmission line and tilted downward to monitor the transmission line. It is inevitable to shoot objects on the ground. Therefore, the captured image is highly complex and places high requirements on the image processing system. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides an intelligent fault monitoring device for a three-span regional overhead transmission line.

[0007] The present invention is implemented by the following technical scheme, providing an intelligent fault monitoring device for a three-span area overhead transmission line, including a mobile monitoring module and a fixed monitoring module;

[0008] The fixed monitoring module includes a main mounting pole, a photovoltaic panel, a main storage battery and a current transformer sleeved on the transmission line. The main mounting pole is fixedly connected to the pole tower, the photovoltaic panel is fixedly connected to the main mounting pole, the main storage battery is fixedly connected to the back of the photovoltaic panel, and the current transformer is fixedly connected to the main mounting pole through a transformer fixing pole. A slewing bearing sleeved on the transmission line is installed below the main mounting pole, and the slewing bearing includes a slewing bearing fixing ring and a slewing bearing rotating ring that rotate relatively. The slewing bearing fixing ring is fixedly connected to the main mounting pole, and a telephoto camera is installed on the slewing bearing rotating ring. The slewing bearing rotating ring is driven to rotate by a rotating motor, so that the telephoto camera rotates around the transmission line and shoots the transmission line.

[0009] The mobile monitoring module includes a mobile frame located below the transmission line and mobile cameras installed on both sides of the mobile frame. The mobile frame is equipped with at least three clamping walking mechanisms. The clamping walking mechanism includes a groove wheel base fixedly connected to the upper end of the mobile frame, two left and right swing arms hinged on the groove wheel base, and a tension spring connected between the two swing arms. The swing arm is equipped with a walking groove wheel and a groove wheel motor for driving the walking groove wheel to rotate. The two walking groove wheels of the clamping walking mechanism clamp the transmission line. The mobile monitoring module also includes an avoidance driving mechanism for driving the two swing arms in any clamping walking mechanism to open in reverse. When the clamping walking mechanism moves to the current transformer position, the two swing arms open in reverse to achieve avoidance.

[0010] As an optimization, the avoidance drive mechanism includes a screw axially connected to the moving frame and a screw motor driving the screw to rotate, the screw passes through the two swing arms, a slider is installed on the screw, and a guide rod passing through the slider is fixed to the moving frame. The slider moves between the two swing arms to realize the reverse opening of the two swing arms.

[0011] As an optimization, side mounting seats are fixedly connected on both sides of the mobile frame, and camera swing gears and intermediate gears that mesh with each other are axially connected on the side mounting seats. The mobile camera is installed on the camera swing gear, and a lever extending to the moving path of the slider is fixedly connected to the intermediate gear. The slider drives the lever to swing, thereby driving the mobile camera to swing through the intermediate gear and the camera swing gear, so that the mobile camera faces the forward direction of the mobile monitoring module.

[0012] As an optimization, a secondary battery is installed on the mobile frame, receiving electrodes are fixedly connected to the inner sides of the two swing arms, and power supply electrodes adapted to the receiving electrodes are installed on both sides of the current transformer. When the two swing arms move to the position of the current transformer and press the receiving electrodes against the power supply electrodes, the main battery charges the secondary battery through the power supply electrodes and the receiving electrodes.

[0013] As an optimization, the two travel groove wheels in the clamping travel mechanism are arranged in a V shape.

[0014] As an optimization, the telephoto camera is located in the inner circle of the slewing bearing rotating circle, a camera mounting plate is fixedly connected to the side of the slewing bearing rotating circle, the telephoto camera is hinged to the camera mounting plate, a guide ring is fixedly connected to the side of the slewing bearing fixed circle, a circle of wavy guide grooves is opened on the end face of the guide ring, and an insertion shaft inserted into the wavy guide groove is fixedly connected to the telephoto camera. When the telephoto camera rotates around the transmission line, the wavy guide groove guides the insertion shaft, so that the telephoto camera swings along the transmission line path.

[0015] As an optimization, the central angle of adjacent wave crests and wave troughs of the wave-shaped guide groove relative to the center of the slewing bearing is 15 degrees, and the telephoto camera takes a picture every time the insertion shaft passes through a wave crest or a wave trough.

[0016] As an optimization, the rotating motor is fixedly connected to the main mounting rod via a motor mounting plate, a driving gear is fixedly connected to the rotating shaft of the rotating motor, and an outer gear ring meshing with the driving gear is provided on the rotating ring of the slewing bearing.

[0017] As an optimization, a mounting plate is fixedly connected to the end of the main mounting rod, and the mounting plate is detachably fixed to the tower angle steel of the tower.

[0018] As an optimization, the lower end of the mounting plate is fixedly connected to a lower bend of the mounting plate that is bent upward, the vertical plate of the pole tower angle steel is inserted into the lower bend of the mounting plate, the lower bend of the mounting plate is threadedly connected with bolts that are fastened to the vertical plate of the pole tower angle steel, and also includes two hook screws, one end of the hook screw is hooked on the edge of the horizontal plate of the pole tower angle steel, and the other end of the hook screw is fastened to the mounting plate through a nut.

[0019] The beneficial effects of the present invention are as follows: an intelligent fault monitoring device for overhead transmission lines in a three-span area of ​​the present invention can achieve clearer photography of the transmission lines by using a telephoto camera, and can rotate and photograph the transmission lines by rotating the telephoto camera, so as to more comprehensively monitor the fault points and reduce the interference of ground objects on the photos. The telephoto camera can be swung during the rotation process, so as to take reciprocating photos of the near end and the far end of the transmission line, so as to overcome the disadvantage of the small photography range of the telephoto camera, realize all-round monitoring of the transmission line, and reduce the image processing amount of the central master station at the same time. The mobile monitoring module moves on the transmission line, and the transmission line is inspected by the mobile camera. The clamping walking mechanism can avoid the current transformer and the hanging point position during walking, and make the mobile camera always face the forward direction, so as to realize accurate monitoring of the transmission line. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the present invention;

[0021] Figure 2 It is a front view of the present invention;

[0022] Figure 3 It is a left side view of the present invention;

[0023] Figure 4 It is a structural schematic diagram of the mobile monitoring module of the present invention;

[0024] Figure 5 It is a front view of the mobile monitoring module of the present invention;

[0025] Figure 6 It is a right side view of the mobile monitoring module of the present invention;

[0026] Figure 7 For the present invention Figure 6 A top view of

[0027] Figure 8 It is a schematic diagram of adjusting the mobile camera of the present invention;

[0028] Fig. 9 It is a structural schematic diagram of the clamping walking mechanism in the mobile monitoring module of the present invention;

[0029] Fig.10 It is a side view of the clamping walking mechanism in the mobile monitoring module of the present invention;

[0030] Fig.11 This is a schematic diagram of charging the mobile monitoring module of the present invention;

[0031] Fig.12 It is a structural schematic diagram of a fixed monitoring module of the present invention;

[0032] Fig.13 This is a structural schematic diagram of a fixed monitoring module from another angle of the present invention;

[0033] Fig.14 It is a front view of a fixed monitoring module of the present invention;

[0034] Fig.15 It is a right side view of the fixed monitoring module of the present invention;

[0035] Fig.16 This is a structural schematic diagram of the position of the mounting plate in the fixed monitoring module of the present invention;

[0036] Fig.17 A schematic diagram of the range in which the telephoto camera in the fixed monitoring module of the present invention takes photos of distant objects;

[0037] Fig.18 A schematic diagram of the range in which the telephoto camera in the fixed monitoring module of the present invention takes pictures of nearby objects;

[0038] As shown in the figure:

[0039] 1. Main mounting pole, 2. Photovoltaic panel, 3. Main battery, 4. Photovoltaic panel fixing pole, 5. Photovoltaic panel casing, 6. Central control module, 7. Wireless communication module, 8. Telephoto camera, 9. Current transformer, 10. Transformer fixing pole, 11. Wind speed sensor, 12. Mounting plate, 13. Pole tower angle steel, 14. Mounting plate lower bend, 15. Hook screw, 16. Motor mounting plate, 17. Rotating motor, 18. Driving gear, 19. Slewing bearing fixing ring, 20. Slewing bearing rotating ring, 21. Camera Mounting plate, 22. Insert shaft, 23. Guide ring, 24. Wave-shaped guide groove, 25. Transmission line, 26. Mobile frame, 27. Mobile camera, 28. Traveling groove wheel, 29. Groove wheel base, 30. Swing arm, 31. Groove wheel motor, 32. Screw motor, 33. Screw, 34. Slider, 35. Guide rod, 36. Tension spring, 37. Power receiving electrode, 38. Power supply electrode, 39. Camera mounting seat, 40. Camera swing gear, 41. Intermediate gear, 42. Lever, 43. Side mounting seat. DETAILED DESCRIPTION

[0040] In order to clearly illustrate the technical features of this solution, this solution is described below through a specific implementation method.

[0041] like Figure 1-Figure 18 As shown, an intelligent fault monitoring device for a three-span area overhead transmission line of the present invention includes a mobile monitoring module and a fixed monitoring module. The number of the mobile monitoring module and the fixed monitoring module is determined according to the on-site layout. A fixed monitoring module can be set on each tower to monitor one side. Two reverse fixed monitoring modules can also be set on each tower to improve the accuracy of monitoring. The number of mobile monitoring modules is generally less than the number of fixed monitoring modules. Generally, each mobile monitoring module covers a range between 3-6 towers.

[0042] The fixed monitoring module includes a main mounting pole 1 , a current transformer 9 , a wind speed sensor 11 , a slewing bearing, a telephoto camera 8 , a central control module 6 and a wireless communication module 7 .

[0043] The main mounting rod 1 is a transversely arranged rectangular tube, which can be detachably fixed to the pole tower to support other components. In order to fix the main mounting rod 1, a mounting plate 12 is fixed to the end of the main mounting rod 1. The mounting plate 12 is a rectangular plate and is perpendicular to the main mounting rod 1. The mounting plate 12 is detachably fixed to the pole tower angle steel 13 of the pole tower.

[0044] like Fig.16As shown, the pole tower angle steel 13 is an angle steel arranged transversely on the pole tower, including a vertical plate and a horizontal plate, the horizontal plate is on the top, the vertical plate is on the bottom, and the horizontal plate and the vertical plate are connected integrally at 90 degrees. In this embodiment, the lower end of the mounting plate 12 is fixedly connected with a mounting plate lower bend 14 bent upward, the vertical plate of the pole tower angle steel 13 is inserted into the mounting plate lower bend 14, and the mounting plate lower bend 14 is threadedly connected with two bolts fastened to the vertical plate of the pole tower angle steel 13.

[0045] It also includes two hook screws 15, which are usually threaded and have a 180-degree hook at one end. One end of the hook screw 15 is hooked on the edge of the horizontal plate of the tower angle steel 13, and the other end of the hook screw 15 passes through the vertical long hole of the mounting plate 12 and is fastened to the mounting plate 12 by a nut.

[0046] During installation, first hook the lower bend 14 of the mounting plate at the lower end of the mounting plate 12 onto the lower end of the vertical plate of the pole tower angle steel 13, and tighten it with bolts to achieve pre-fixation, then hook the two hook screws 15 onto the edge of the horizontal plate of the pole tower angle steel 13, pass the hook screws 15 through the vertical long holes of the mounting plate 12, and tighten them with nuts to achieve final fixation. This fixing method can achieve fixed installation without drilling holes on the pole tower angle steel 13.

[0047] A vertical transformer fixing rod 10 is fixedly connected to the lower end of the main mounting rod 1 , the current transformer 9 is mounted on the lower end of the transformer fixing rod 10 , and the transmission line 25 passes through the detection hole of the current transformer 9 , so as to detect the current of the transmission line 25 .

[0048] It also includes a photovoltaic panel 2 and a main battery 3. The photovoltaic panel 2 is tilted and fixedly connected to a vertical photovoltaic panel sleeve 5. A vertical photovoltaic panel fixing rod 4 is fixedly connected to the main mounting rod 1. The photovoltaic panel sleeve 5 is sleeved on the photovoltaic panel fixing rod 4 and fastened by bolts. The bolts are threadedly connected to the outside of the photovoltaic panel sleeve 5 and are fixed by fastening to the side of the photovoltaic panel fixing rod 4. After loosening the bolts, the photovoltaic panel sleeve 5 can be rotated to adjust the direction of the photovoltaic panel 2 so that it faces the light position.

[0049] The main battery 3 is fixedly connected to the back of the photovoltaic panel 2 to prevent it from raining. The main battery 3 is charged by the photovoltaic panel 2, and the main battery 3 supplies power to the entire monitoring device. The current transformer 9, the slewing bearing, the central control module 6, the rotating motor 17 and the telephoto camera 8 are all located directly below the photovoltaic panel 2 to prevent it from raining.

[0050] The wind speed sensor 11 is fixed to the upper end of the photovoltaic panel 2 through a mounting bracket for detecting the wind speed. The mounting position is at the highest point of the entire monitoring device and is not affected by other components when detecting the wind speed.

[0051] The slewing bearing is installed below the main mounting rod 1 and is sleeved on the transmission line 25. During installation, the transmission line 25 passes through the center position of the slewing bearing. The slewing bearing includes a slewing bearing fixed ring 19 and a slewing bearing rotating ring 20 that rotate relatively. The slewing bearing fixed ring 19 is fixedly connected to the main mounting rod 1. In this embodiment, the inner ring of the slewing bearing is the slewing bearing fixed ring 19, and the outer ring is the slewing bearing rotating ring 20.

[0052] A vertical motor mounting plate 16 is fixedly connected below the main mounting rod 1, and the slewing bearing fixing ring 19 is fixedly connected to the lower end of the motor mounting plate 16 by bolts, thereby realizing the installation of the slewing bearing, and the rotating motor 17 is fixedly connected to the motor mounting plate 16, and the rotating shaft passes through the motor mounting plate 16. A driving gear 18 is fixedly connected to the rotating shaft of the rotating motor 17, and an outer gear ring meshing with the driving gear 18 is provided on the slewing bearing rotating ring 20. Thus, the rotating motor 17 drives the slewing bearing rotating ring 20 to rotate.

[0053] The telephoto camera 8 is installed on the slewing bearing rotating circle 20 of the slewing bearing, rotates around the transmission line 25 and takes pictures of the transmission line 25; the telephoto camera 8 described in this embodiment is located in the inner circle of the slewing bearing rotating circle 20 and is slightly inclined. The front end of the telephoto camera 8 is inclined toward the direction of the transmission line 25, thereby facilitating taking pictures of the transmission line 25.

[0054] A camera mounting plate 21 is fixedly connected to the side of the slewing bearing rotating circle 20, and the telephoto camera 8 is hinged to the camera mounting plate 21, and the hinge axis is perpendicular to the power transmission line 25, so that the front end of the telephoto camera 8 can swing radially along the power transmission line 25. The telephoto camera 8 is in the shape of a long strip, and there is an angle between the length direction and the power transmission line 25. When the angle is minimum, the telephoto camera 8 is close to being parallel to the power transmission line 25. When the angle is smaller, the telephoto camera 8 is swung to a position close to the power transmission line 25. Fig.17 As shown in the middle shaded range, the telephoto camera 8 is nearly parallel to the transmission line 25, and can take pictures of the transmission line 25 in the distance; when the telephoto camera 8 is swung to a larger angle with the transmission line 25, as shown in FIG. Fig.18 As shown in the middle shaded area, the nearby transmission line 25 can be photographed.

[0055] In order to realize the swing of the telephoto camera 8, a guide ring 23 is fixedly connected to the side of the slewing bearing fixing ring 19. The guide ring 23 is coaxially arranged with the slewing bearing fixing ring 19. A circle of wavy guide grooves 24 is opened on the end face of the guide ring 23. The wavy guide grooves 24 are wavy in the circumferential direction. The adjacent crests and troughs of the wavy guide grooves 24 have a central angle of 15 degrees relative to the center of the slewing bearing. That is to say, when the telephoto camera 8 reaches the trough position from the crest position, it rotates 15 degrees relative to the transmission line 25.

[0056] The telephoto camera 8 is fixedly connected with an insertion shaft 22 inserted into the wavy guide groove 24. The portion of the insertion shaft 22 inserted into the wavy guide groove 24 is spherical. When the telephoto camera 8 rotates around the power transmission line 25, the wavy guide groove 24 guides the insertion shaft 22, so that the telephoto camera 8 swings radially along the power transmission line 25. The distance between the crest position of the wavy guide groove 24 and the power transmission line 25 is greater than the distance between the trough position and the power transmission line 25. Therefore, when the insertion shaft 22 is at the crest position, the angle between the telephoto camera 8 and the power transmission line 25 is the smallest, which is convenient for taking photos at a distance.

[0057] The central control module 6 is used to collect data from the wind speed sensor 11 and the current transformer 9, control the rotation of the rotating motor 17, and control the telephoto camera 8 to take pictures. The pictures taken are sent to the central main station through the wireless communication module 7. The central control module 6 is also provided with an image processing module. After the pictures taken by the telephoto camera 8 are preliminarily processed by the image processing module, if it is shown that there is obviously no fault, the pictures will not be sent to the central main station. Only when the image processing module shows that there is a suspected fault after preliminary processing, or the current transformer 9 detects that the current of the transmission line 25 is abnormal, or the wind speed sensor 11 detects that the wind speed exceeds the set value, will the pictures be sent to the central main station, thereby reducing the data processing capacity of the central main station. The central main station determines the fault of the transmission line 25 based on the image information, and further determines the fault point.

[0058] like Figure 4-Figure 11 As shown, the mobile monitoring module includes a mobile frame 26 located below the transmission line 25 and mobile cameras 27 installed on both sides of the mobile frame 26. The mobile frame 26 in this embodiment adopts a rectangular tubular structure, the length direction of which is parallel to the transmission line 25 and is located directly below the transmission line 25.

[0059] In order to realize the movement of the mobile monitoring module on the transmission line 25, at least three clamping walking mechanisms are installed on the mobile frame 26. The three clamping walking mechanisms can realize the movement after clamping the transmission line 25. When walking to the current transformer 9 or the transmission line hanging point, it is necessary to open and avoid in sequence, so at least three are set. When one of them opens and avoids, the other two can still maintain the clamping and walking. In this embodiment, three clamping walking mechanisms are used. When encountering the current transformer 9 or the transmission line hanging point, the first clamping walking mechanism opens and avoids first, and the second and third ones are used to realize the continuous walking. After the first clamping walking mechanism passes the current transformer 9 or the transmission line hanging point, the first clamping walking mechanism realizes the clamping walking, and the second clamping walking mechanism opens and avoids first, so as to realize the three clamping walking mechanisms passing the current transformer 9 or the transmission line hanging point.

[0060] like Fig. 9 , 10 As shown, the clamping walking mechanism includes a sheave base 29 fixed to the upper end of the moving frame 26, two swing arms 30 arranged left and right and hinged on the sheave base 29, and a tension spring 36 connected between the two swing arms 30. The lower end of the swing arm 30 is hinged to the sheave base 29 and the hinge axis extends forward and backward, so that the swing arm 30 can swing left and right. The two swing arms 30 are symmetrically arranged left and right and are special-shaped bent plates, such as Fig.10 As shown, at the connection position of the tension spring 36 , the swing arm 30 is bent and protruded outward, thereby facilitating the arrangement of the tension spring 36 .

[0061] The swing arm 30 is provided with a travel sheave 28 and a sheave motor 31 for driving the travel sheave 28 to rotate. The two travel sheaves 28 in the clamping travel mechanism are arranged in a V-shape, and the V-shaped structure formed by the two travel sheaves 28 opens upward. The grooves of the travel sheaves 28 are arc-shaped grooves with the same radius as the radius of the power transmission line 25. Through the tension of the tension spring 36, the two travel sheaves 28 are closed and fit in the upper position on both sides of the power transmission line 25, thereby preventing them from falling out.

[0062] The two travel groove wheels 28 of the clamping travel mechanism clamp the transmission line 25, such as Fig.10 Schematic diagram of the clamping state. Figure 4-Figure 7 In the embodiment, one clamping travel mechanism is in an open state, and the other two clamping travel mechanisms are in a clamping state.

[0063] It also includes an avoidance driving mechanism for driving the two swing arms 30 in any clamping walking mechanism to open in reverse. When the clamping walking mechanism moves to the position of the current transformer 9 or the transmission line hanging point, the two swing arms 30 open in reverse to avoid the current transformer 9 or the transmission line hanging point.

[0064] The avoidance driving mechanism includes a screw 33 axially connected to the moving frame 26 and a screw motor 32 that drives the screw 33 to rotate. The screw 33 passes between the two swing arms 30. A slider 34 is installed on the screw 33. A guide rod 35 that passes through the slider 34 is fixed to the moving frame 26. The guide rod 35 prevents the slider 34 from rotating, thereby driving the slider 34 to move through the rotation of the screw 33.

[0065] The slider 34 is cylindrical in the middle and conical at both ends, so that it is easy to squeeze in between the two swing arms 30. At the same time, the edge chamfers on both sides of the swing arms 30 where the slider 34 contacts are also set to facilitate the slider 34 to squeeze in between the two swing arms 30. The slider 34 moves between the two swing arms 30 to realize the reverse opening of the two swing arms 30.

[0066] The mobile frame 26 is equipped with a secondary battery. Since the mobile monitoring module needs power supply, the secondary battery needs to be charged. However, if a photovoltaic panel is provided on the mobile monitoring module, the overall weight will increase, which is not conducive to clamping on the power transmission line 25. In addition, the photovoltaic panel increases the volume and is not convenient for passing through the slewing bearing.

[0067] Therefore, in this embodiment, a power receiving electrode 37 is fixedly connected to the inner side of the two swing arms 30. Fig.11 As shown, power supply electrodes 38 adapted to the power receiving electrodes 37 are installed on both sides of the current transformer 9. The two power supply electrodes 38 are respectively positive and negative and are connected to the main battery 3, and the two power receiving electrodes 37 are respectively positive and negative and are connected to the auxiliary battery.

[0068] When charging is needed, any clamping travel mechanism is opened and moved to the position of the current transformer 9, and then the slider 34 is removed. When the two swing arms 30 press the receiving electrode 37 against the power supply electrode 38, the main battery 3 charges the auxiliary battery through the power supply electrode 38 and the receiving electrode 37.

[0069] Since the mobile monitoring module needs to move in both forward and reverse directions, and the monitoring range of the mobile camera 27 is limited, it is best to point the mobile camera 27 forward in the direction of travel when walking, so as to monitor the fault on the front power transmission line 25 in advance and make a prediction. When there is ice or other obstacles on the power transmission line 25, it can be avoided in advance that the clamping travel mechanism moves to the obstacles, resulting in the two travel groove wheels 28 being unable to clamp effectively.

[0070] Therefore, when the mobile monitoring module is moving, the mobile camera 27 needs to always be facing forward in the moving direction. When the moving direction of the mobile monitoring module changes, the mobile camera 27 needs to adjust its direction accordingly. In this embodiment, the mobile frame 26 is fixedly connected with side mounting seats 43 on both sides, and the side mounting seats 43 are connected to the axis with a camera swing gear 40 and an intermediate gear 41 that mesh with each other. The camera swing gear 40 and the intermediate gear 41 are arranged front to back, and the camera swing gear 40 is located in the middle position of the front and rear direction of the mobile frame 26. The diameter of the camera swing gear 40 is smaller than the diameter of the intermediate gear 41. Therefore, a small rotation of the intermediate gear 41 can realize a large angle rotation of the camera swing gear 40.

[0071] like Figure 8 As shown, the mobile camera 27 is connected to the camera mounting base 39 by a bolt. After loosening the bolt, the up and down elevation angles of the mobile camera 27 can be adjusted to facilitate installation toward the power transmission line.

[0072] The camera mounting seat 39 is fixedly connected to the camera swing gear 40, so the rotation of the camera swing gear 40 can realize the swing of the mobile camera 27. The camera swing gear 40 is rotatably connected to the central shaft, and the central shaft is fixedly connected to the side mounting seat 43. A torsion spring is installed between the camera swing gear 40 and the central shaft. The torsion spring makes the mobile camera 27 face the direction perpendicular to the power transmission line. When the mobile camera 27 swings in any direction, the torsion spring generates a restoring elastic force.

[0073] The middle gear 41 is fixedly connected with a lever 42 extending to the moving path of the slider 34. The lever 42 is located between the two clamping walking mechanisms. The slider 34 drives the lever 42 to swing, thereby driving the mobile camera 27 to swing through the middle gear 41 and the camera swing gear 40, so that the mobile camera 27 faces the forward direction of the mobile monitoring module.

[0074] Method of use of the present invention:

[0075] The fixed monitoring module starts the telephoto camera 8 and the rotating motor 17 to rotate and take pictures at set intervals (determined according to the on-site conditions, generally 1 hour to 24 hours). The rotating motor 17 drives the telephoto camera 8 to rotate, and takes pictures once every rotation of the set angle. In this embodiment, the telephoto camera 8 takes pictures every time the plug shaft 22 passes through a crest or a trough, that is, every time it rotates 15 degrees.

[0076] After the taken photos are preliminarily processed by the image processing module, if it is shown that there is obviously no fault, the photos will not be sent to the central main station. If it is shown that there is a suspected fault, the photos will be sent to the central main station. The central main station will judge the fault of the transmission line 25 based on the image information and further determine the fault point.

[0077] If the current transformer 9 detects that the current of the transmission line 25 is abnormal or the wind speed sensor 11 detects that the wind speed exceeds the set value, the telephoto camera 8 and the rotating motor 17 are immediately started and the photos are sent to the central main station. The central main station determines the fault of the transmission line 25 based on the image information and further determines the fault point.

[0078] The mobile monitoring module is equipped with a second wireless communication module, which can communicate with the central main station. The mobile monitoring module can regularly patrol the transmission line 25, and can also perform detailed monitoring of designated locations according to the requirements of the central main station. Generally, when the fixed monitoring module detects that a certain location may have a fault, the mobile monitoring module moves to that location for confirmation.

[0079] When the mobile monitoring module is working, it can move after clamping the power transmission line 25 through three clamping walking mechanisms. Figure 7As shown (in order to reflect the specific structure of the mobile monitoring module, Figure 7 The transmission line 25 is not shown in the figure), the slider 34 is located at the lever 42, and is used to push the lever 42 upward to keep it in the state of Figure 7 The intermediate gear 41 and the camera swing gear 40 drive the mobile camera 27 to swing, so that the mobile camera 27 always faces the forward direction of the mobile monitoring module. Figure 7 The mobile monitoring module moves downward in the figure, so the slider 34 pushes the lever 42 upward. When it is pushed, the middle gear 41 on the right rotates clockwise, and the camera swing gear 40 on the right rotates counterclockwise, so that the mobile camera 27 swings to the downward direction, that is, in front of the walking direction, to facilitate observation of the situation of the power transmission line 25 in front.

[0080] If the mobile monitoring module needs to switch to Figure 7 The slider 34 moves upwards, Figure 7 The slider 34 moves upward in the middle and separates from the lever 42. The torsion spring in the center of the camera swing gear 40 drives the camera swing gear 40 to reset, and the lever 42 is also reset to a state perpendicular to the power transmission line. Then the slider 34 moves downward again, pushing the lever 42 to swing downward, so that the front end of the mobile camera 27 swings upward.

[0081] When walking to the current transformer 9 or the transmission line hanging point, it is necessary to avoid the obstacle point, and the three clamping walking mechanisms need to be opened in sequence to achieve avoidance, for example Figure 7 When walking downward, the mobile camera 27 observes that there is a current transformer 9 or a transmission line hanging point in front, then the moving speed of the mobile monitoring module is reduced, and the slider 34 moves to Figure 7 The lowest clamping travel mechanism position (that is, the frontmost clamping travel mechanism position in the travel direction) Figure 7 The clamping travel mechanism at the bottom is opened, and after the slider 34 leaves the lever 42, the torsion spring at the center of the camera swing gear 40 drives the camera swing gear 40 to reset, so that the mobile camera 27 is reset to the direction facing the power transmission line 25, and the observation of the three clamping travel mechanism positions and the power transmission line 25 is maintained. After the first clamping travel mechanism passes the obstacle point, the mobile monitoring module stops moving, and the slider 34 moves from Figure 7 The lowest one in the middle moves upward to the middle clamping walking mechanism, so that the second clamping walking mechanism opens, and then continues to move so that the second clamping walking mechanism passes the obstacle point, and so on, so that all three clamping walking mechanisms pass the obstacle point. After passing, the slider 34 returns to Figure 7 At the middle lever 42, continue to push the lever 42 to make the mobile camera 27 face the forward direction of the mobile monitoring module.

[0082] When charging is required, any clamping travel mechanism is opened and moved to the position of the current transformer 9, and then the slider 34 is removed. When the two swing arms 30 press the receiving electrode 37 against the power supply electrode 38, the main battery 3 charges the auxiliary battery through the power supply electrode 38 and the receiving electrode 37.

[0083] Of course, the above description is not limited to the above examples. Technical features not described in the present invention can be achieved by or by using existing technologies, which will not be described here. The above embodiments and drawings are only used to illustrate the technical scheme of the present invention and are not limitations of the present invention. The present invention is described in detail with reference to the preferred implementation methods. Ordinary technicians in this field should understand that changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention do not depart from the purpose of the present invention, and should also fall within the scope of protection of the claims of the present invention.

Claims

1. An intelligent fault monitoring device for a three-span area overhead transmission line, characterized in that: Including mobile monitoring module and fixed monitoring module; The fixed monitoring module comprises a main mounting pole (1), a photovoltaic panel (2), a main storage battery (3), and a current transformer (9) sleeved on a power transmission line (25); the main mounting pole (1) is fixedly connected to a pole tower; the photovoltaic panel (2) is fixedly connected to the main mounting pole (1); the main storage battery (3) is fixedly connected to the back of the photovoltaic panel (2); the current transformer (9) is fixedly connected to the main mounting pole (1) via a transformer fixing pole (10); and a current transformer (9) sleeved on a power transmission line (25) is installed below the main mounting pole (1). The slewing bearing comprises a slewing bearing fixed ring (19) and a slewing bearing rotating ring (20) which rotate relative to each other, the slewing bearing fixed ring (19) being fixedly connected to the main mounting rod (1), and a telephoto camera (8) being mounted on the slewing bearing rotating ring (20), and the slewing bearing rotating ring (20) is driven to rotate by a rotating motor (17), so that the telephoto camera (8) rotates around the power transmission line (25) and shoots the power transmission line (25); The mobile monitoring module comprises a mobile frame (26) located below the power transmission line (25) and mobile cameras (27) installed on both sides of the mobile frame (26). The mobile frame (26) is equipped with at least three clamping travel mechanisms. The clamping travel mechanisms include a groove wheel base (29) fixedly connected to the upper end of the mobile frame (26), two swing arms (30) arranged left and right and hinged on the groove wheel base (29), and a tension spring (36) connected between the two swing arms (30). The swing arms (30) are equipped with travel groove wheels (28) and groove wheel motors (31) for driving the travel groove wheels (28) to rotate. The two travel groove wheels (28) of the clamping travel mechanism clamp the power transmission line (25). The mobile monitoring module also comprises an avoidance driving mechanism for driving two swing arms (30) in any clamping travel mechanism to open in reverse. When the clamping travel mechanism moves to the position of the current transformer (9), the two swing arms (30) open in reverse to achieve avoidance.

2. The intelligent fault monitoring device for three-span overhead power transmission lines according to claim 1 is characterized in that: The avoidance drive mechanism comprises a lead screw (33) axially connected to the moving frame (26) and a lead screw motor (32) for driving the lead screw (33) to rotate, the lead screw (33) passing through two swing arms (30), a slider (34) being mounted on the lead screw (33), a guide rod (35) passing through the slider (34) being fixedly connected to the moving frame (26), and the slider (34) moving between the two swing arms (30) to achieve reverse opening of the two swing arms (30).

3. The intelligent fault monitoring device for three-span overhead power transmission lines according to claim 2 is characterized in that: Side mounting seats (43) are fixedly connected to both sides of the mobile frame (26); the upper shaft of the side mounting seats (43) is connected to a camera swing gear (40) and an intermediate gear (41) that mesh with each other; the mobile camera (27) is mounted on the camera swing gear (40); the intermediate gear (41) is fixedly connected to a lever (42) extending to the moving path of the slider (34); the slider (34) drives the lever (42) to swing, thereby driving the mobile camera (27) to swing through the intermediate gear (41) and the camera swing gear (40), so that the mobile camera (27) faces the forward direction of the mobile monitoring module.

4. The intelligent fault monitoring device for three-span overhead power transmission lines according to claim 1 is characterized in that: The movable frame (26) is provided with an auxiliary battery, the inner sides of the two swing arms (30) are fixedly connected with a power receiving electrode (37), and the two sides of the current transformer (9) are provided with power supply electrodes (38) adapted to the power receiving electrode (37). When the two swing arms (30) move to the position of the current transformer (9) and press the power receiving electrode (37) against the power supply electrode (38), the main battery (3) charges the auxiliary battery through the power supply electrode (38) and the power receiving electrode (37).

5. The intelligent fault monitoring device for three-span overhead power transmission lines according to claim 1 is characterized in that: The two travel groove wheels (28) in the clamping travel mechanism are arranged in a V shape.

6. The intelligent fault monitoring device for three-span overhead power transmission lines according to claim 1, characterized in that: The telephoto camera (8) is located in the inner circle of the slewing bearing rotating circle (20); a camera mounting plate (21) is fixedly connected to the side of the slewing bearing rotating circle (20); the telephoto camera (8) is hingedly connected to the camera mounting plate (21); a guide ring (23) is fixedly connected to the side of the slewing bearing fixed circle (19); a circle of wavy guide grooves (24) are formed on the end surface of the guide ring (23); an insertion shaft (22) inserted into the wavy guide groove (24) is fixedly connected to the telephoto camera (8); when the telephoto camera (8) rotates around the power transmission line (25), the wavy guide groove (24) guides the insertion shaft (22), so that the telephoto camera (8) swings radially along the power transmission line (25).

7. The intelligent fault monitoring device for three-span overhead power transmission lines according to claim 6 is characterized in that: The central angle of adjacent wave crests and wave troughs of the wave-shaped guide groove (24) relative to the center of the slewing bearing is 15 degrees, and each time the insertion shaft (22) passes through a wave crest or a wave trough, the telephoto camera (8) takes a picture.

8. The intelligent fault monitoring device for three-span overhead power transmission lines according to claim 6 is characterized in that: The rotating motor (17) is fixedly connected to the main mounting rod (1) via a motor mounting plate (16); a driving gear (18) is fixedly connected to the rotating shaft of the rotating motor (17); and an outer gear ring meshing with the driving gear (18) is provided on the slewing bearing rotating ring (20).

9. The intelligent fault monitoring device for three-span overhead power transmission lines according to claim 6, characterized in that: A mounting plate (12) is fixedly connected to the end of the main mounting rod (1), and the mounting plate (12) is detachably fixedly connected to a pole tower angle steel (13) of the pole tower.

10. The intelligent fault monitoring device for three-span overhead power transmission lines according to claim 9, characterized in that: The lower end of the mounting plate (12) is fixedly connected to a mounting plate lower bend (14) bent upward, the vertical plate of the pole tower angle steel (13) is inserted into the mounting plate lower bend (14), the mounting plate lower bend (14) is threadedly connected with bolts fastened to the vertical plate of the pole tower angle steel (13), and also includes two hook screws (15), one end of the hook screw (15) is hooked on the edge of the horizontal plate of the pole tower angle steel (13), and the other end of the hook screw (15) is fastened to the mounting plate (12) through a nut.

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