Method and system for detecting live fault of high-voltage power transmission and distribution network

Abstract

The application discloses a high-voltage power transmission and transformation network live fault detection method and system, relates to the technical field of live detection, and comprises a supporting mechanism and a detection mechanism. The supporting mechanism comprises: a movable frame one vertically arranged and having a height higher than that of the cross beam of a power transformation station framework; a movable frame two arranged on the side of the movable frame one and having a height matched with that of the movable frame one; and a rope body used for crossing the cross beam of the power transformation station framework and connected to the movable frame one at one end and to the movable frame two at the other end. At least the rope body is of an insulating structure, and the detection mechanism is slidably connected to the rope body and used as a detection end facing the insulator. The application has the effects of reducing the risk of electric shock of workers during live detection operation and improving the detection efficiency.

Description

Technical Field

[0001] This application relates to the field of live-line detection technology, and in particular to a method and system for detecting live-line faults in high-voltage power transmission and transformation networks. Background Technology

[0002] An insulator is a device installed between conductors at different potentials or between a conductor and a grounding component, capable of withstanding voltage and mechanical stress.

[0003] Substations contain a large number of power transmission and transformation cables and related facilities. The substation frame, i.e., the crossbeam of the gantry, often has multiple insulators distributed on it for the needs of cable introduction and other purposes. During long-term use, insulators may be damaged, dirty, or corroded due to various factors, leading to safety hazards. Therefore, they need to be inspected and maintained regularly.

[0004] However, substations transmit high-voltage electricity. In order to protect the safe operation of the high-voltage power transmission and transformation network and not affect the normal power supply to surrounding users, power cannot be cut off during maintenance. This results in a high risk of electric shock when workers visually inspect insulators.

[0005] Although there are technologies on the market that allow drones to replace manual visual inspection of power facilities, and theoretically could be used in the inspection of substation insulators, the reality is: Substations are densely packed with cables and other high-voltage electrical structures. If a drone goes out of control unexpectedly, it can easily cause a major safety accident. Therefore, this application proposes a new technical solution. Summary of the Invention

[0006] To reduce the risk of electric shock to workers during live-line testing and to improve testing efficiency, this application provides a method and system for detecting live-line faults in high-voltage power transmission and transformation networks.

[0007] Firstly, this application provides a high-voltage power transmission and transformation network live fault detection system, which adopts the following technical solution: A high-voltage power transmission and transformation network live fault detection system includes a support mechanism and a detection mechanism. The support mechanism includes: a first movable frame, which is vertically erected and at least higher than the crossbeam of the substation structure; a second movable frame, which is erected to the side of the first movable frame and whose height is adapted to the first movable frame; a rope, which is used to cross the crossbeam of the substation structure and is connected at one end to the first movable frame and at the other end to the second movable frame; at least the rope is an insulated structure, and the detection mechanism is slidably connected to the rope with the end used for detection facing the insulator.

[0008] Optionally, the movable frame one includes a base one, a vertical rod one fixed to the base one, a rope winder one, an insulating hook, and a support platform. The support platform is fixed to the upper end of the vertical rod one, and the rope winder one is installed on the vertical rod one or the support platform. The rope body includes section A and section B. One end of section A is fixed to the rope winder one and the other end is fixed to the insulating hook. The support platform has a hook groove for temporarily storing the insulating hook. The upper part of the hook groove and the end away from the rope winder one are open. One end of section B is connected to the movable frame two and the other end is fixed to a ring.

[0009] Optionally, the movable frame two includes a base two, a vertical rod two fixed to the base two, a rope winder two, a ring buckle, and a guide rod. The rope winder two is installed on the vertical rod two. The guide rod is fixed to the upper end of the vertical rod two and its end faces the vertical rod one. The upper part of the guide rod has a groove along its length to guide segment B. A pulley is vertically installed at the end of the guide rod. One end of segment B is fixed to the rope winder two, and the other end passes through the vertical rod two, through the groove of the guide rod, and then passes through the pulley from top to bottom, with the ring buckle fixed at its end. A limit buckle is installed above the pulley to prevent segment B from detaching from the pulley.

[0010] Optionally, the detection mechanism includes a suspension seat, a lifting seat, and a camera. The suspension seat has a through hole along the lateral direction, and segment A passes through the through hole. A locking unit for clamping segment A is installed inside the suspension seat. The lifting seat is connected to the base below through a lifting unit. The lifting seat is hollow inside and has a camera installed inside. The support platform is also provided with a groove for temporarily storing the detection mechanism, and the upper part of the groove and the end away from the rope reel are open.

[0011] Optionally, the locking unit includes a guide rope tube, an electric cylinder, and a pressing plate. The guide rope tube is inserted and fixed in the through hole of the suspension seat. Section A is inserted through the guide rope tube into the suspension seat, and the upper half of the guide rope tube is empty. The electric cylinder is located above the guide rope tube with its output shaft facing downward. The pressing plate is horizontally fixed to the end of the output shaft of the electric cylinder. The pressing plate is used to clamp Section A in conjunction with the guide rope tube.

[0012] Optionally, the lifting unit includes a rotary motor, a winding rod, and a cable. The rotary motor is fixed inside the suspension seat and its output shaft is horizontal. One end of the winding rod is horizontally fixed to the output shaft of the rotary motor, and the other end is rotatably connected to the lifting seat. The cable is wound around the winding rod and one end passes downward through the suspension seat and is fixedly connected to the upper part of the lifting seat.

[0013] Optionally, the upper parts of the base one and the base two are respectively vertically fixed with electric push rod one, and the push rod ends of the two electric push rods one are respectively fixed to the bottom of the vertical rod one and the vertical rod two; The lower parts of the base one and base two are respectively fixed with a moving mechanism. The moving mechanism includes a load-bearing seat, an electric push rod two, a moving seat, a track, and a steering unit used to control the rotation of the moving seat. The upper part of the load-bearing seat is fixed to the lower part of the base one or base two, and the periphery of the load-bearing seat extends downward to form an inner cavity. The electric push rod two is vertically fixed to the inner cavity of the load-bearing seat, and the push rod of the electric push rod two is rotatably connected to the upper part of the moving seat. Tracks are installed on both sides of the moving seat. The steering unit includes a gear one fixed to the upper part of the moving seat, a rotary motor two vertically fixed to the inner cavity of the load-bearing seat, and a gear two coaxially fixed to the output shaft of the rotary motor two, wherein the gear one meshes with the gear two.

[0014] Optionally, a controller and a signal transmission module are installed inside the base one or base two. The signal transmission module is electrically connected to the controller. The rotary motor one, rotary motor two, rope winder one, rope winder two, electric push rod one, electric push rod two, track, electric cylinder, and camera are signal-connected to the controller through the signal transmission module. The controller is configured as follows: Obtain the target spacing, displacement direction, and rope height preset by the staff; Adjust base one and base two to the initial distance using the tracks, and adjust the height of vertical rod one and vertical rod two to be consistent using electric push rod one; Based on the rope height, control electric push rod one and electric push rod two to adjust the rope to the corresponding height; Based on the target spacing, the track control base one and base two move the corresponding distance, and control the rope reel one and rope reel two to release or retract the rope length corresponding to the target spacing. According to the displacement direction, control the electric push rod two to pull back the moving seat, control the rotary motor two to rotate the moving seat to the corresponding direction, and then control the electric push rod two to push out the moving seat; If the suspension seat needs to move with the rope, the electric cylinder is lowered to press the pressure plate against the rope. Depending on the direction of movement of the suspension seat on the rope, control either the first or second rope reel to rotate and retract the rope, while the other rope reel rotates in the opposite direction and releases the same length of rope. If image data below the insulator is needed, the rotating motor is controlled to rotate and lower the lifting seat to descend, thereby controlling the camera to acquire the corresponding image data.

[0015] Secondly, this application provides a method for detecting live faults in high-voltage power transmission and transformation networks, employing the following technical solution: A method for detecting live faults in high-voltage power transmission and transformation networks, which uses a high-voltage power transmission and transformation network live fault detection system as described above to detect live faults in insulators.

[0016] In summary, this application has the following beneficial technical effects: This application uses a support mechanism to elevate the camera, replacing manual close-up acquisition of image data of the insulator, in order to analyze and determine the damage condition of the insulator. On the one hand, this reduces the risk of electric shock caused by workers getting too close to high-voltage cables during live-line testing operations; on the other hand, the image data directly acquired by the camera can also serve as the basis for introducing AI intelligent recognition and analysis, improving the efficiency and accuracy of fault detection. At the same time, because the support structure is a ground-based structure, rather than a suspended structure like a drone that is relatively easy to interfere with, it is safer to use drones to inspect insulators in locations such as substations. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this application.

[0018] Figure 2 This is a schematic diagram of the overall structure from another perspective of this application.

[0019] Figure 3 This is a structural diagram of the supporting structure of this application.

[0020] Figure 4 This is a schematic diagram of the detection mechanism of this application.

[0021] Figure 5 This is a schematic diagram of the moving mechanism of this application.

[0022] Figure 6 This is a cross-sectional view of the moving mechanism of this application.

[0023] Figure 7 This is a connection block diagram of the controller in this application.

[0024] Explanation of reference numerals in the attached drawings: 1. Support mechanism; 11. Movable frame one; 111. Base one; 112. Vertical rod one; 113. Rope winder one; 114. Insulating hook; 115. Bearing platform; 12. Movable frame two; 121. Base two; 122. Vertical rod two; 123. Rope winder two; 124. Ring buckle; 125. Guide rod; 126. Pulley; 127. Limit buckle; 13. Rope body; 14. Electric push rod one; 2. Detection mechanism; 21. Suspension seat; 22. 23. Lifting platform; 24. Camera; 25. Locking unit; 26. Rope guide tube; 27. Electric cylinder; 28. Pressing plate; 29. ​​Lifting unit; 20. Rotary motor one; 21. Winding rod; 22. Line body; 30. Moving mechanism; 31. Load-bearing seat; 32. Electric push rod two; 33. Moving seat; 34. Track; 35. Steering unit; 351. Gear one; 352. Rotary motor two; 353. Gear two; 4. Controller; 5. Signal transmission module. Detailed Implementation

[0025] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.

[0026] It is known that insulators are generally divided into suspension insulators and post insulators. Post insulators are mainly used for insulation and mechanical fixing of busbars and electrical equipment in power plants and substations. This application discloses a high-voltage power transmission and transformation network live fault detection system, which is used to perform live detection on post insulators.

[0027] Reference Figure 1 and Figure 2 The high-voltage power transmission and transformation network live fault detection system includes a detection mechanism 2 used for detecting insulators and a support mechanism 1 used for mounting the detection mechanism 2, wherein the support mechanism 1 includes: The movable frame 11 is erected vertically and its height is at least higher than the crossbeam of the substation structure to facilitate the subsequent installation of the detection mechanism 2; The second movable frame 12 is located on the side of the first movable frame 11 and its height is adapted to the first movable frame 11. In this embodiment, the first movable frame 11 and the second movable frame 12 are located on both sides of the substation frame facing each other and on the side of the insulator to be tested. The first movable frame 11 and the second movable frame 12 are preferably made of rigid insulating material. The rope 13 is used to cross the crossbeam of the substation frame. One end of the rope is connected to the movable frame 11 and the other end is connected to the movable frame 2 12. The rope 13 is preferably an insulated structure. The detection mechanism 2 is slidably connected to the rope 13 and the end used for detection is facing the insulator to be tested.

[0028] In this embodiment, the detection mechanism 2 is a camera 23 with a base, and the base of the camera 23 is temporarily fixed to the rope 13. The camera 23 obtains surface image data of the insulator at close range and uploads it to the computer. The staff can visually inspect or the computer can use a preset program to identify whether there is damage, dirt, corrosion or other defects on the surface of the insulator.

[0029] In use: Workers erect movable frame 11 and movable frame 2 12 on both sides of the crossbeam of the substation frame. The erection method can be as follows: Cement is poured into a bucket (insulating material), and a through hole is reserved in the center of the cement for installing movable frame 11 or movable frame 2 12. Movable frame 11 and movable frame 2 12 are inserted into the through hole of the cement respectively. Then, the workers fix the two ends of the rope 13 to the upper ends of movable frame 11 and movable frame 2 12 respectively. The rope 13 is adjusted to be taut by adjusting the distance between the two buckets. After confirming that the rope 13 is taut, the base of the camera 23 is temporarily fixed to the rope 13. The fixing method can be as follows: The base of the camera 23 is fixed with an insulating plastic clip, and the plastic clip is clamped to the rope 13. By moving the position of the two buckets, the camera 23 and the insulator can be moved relative to each other, so that the camera 23 can face the insulator to obtain image data.

[0030] In summary, this application has the following beneficial technical effects: This application uses a support mechanism to elevate the camera, replacing manual close-up acquisition of image data of the insulator, in order to analyze and determine the damage condition of the insulator. On the one hand, this reduces the risk of electric shock caused by workers getting too close to high-voltage cables during live-line testing operations; on the other hand, the image data directly acquired by the camera can also serve as the basis for introducing AI intelligent recognition and analysis, improving the efficiency and accuracy of fault detection. At the same time, because the support structure is a ground-based structure, rather than a suspended structure like a drone that is relatively easy to interfere with, it is safer to use drones to inspect insulators in locations such as substations.

[0031] It is understandable that when the rope 13 is fixed between the first vertical rod 112 and the second vertical rod 122, it is still unavoidable that it needs to be done manually by the staff, which may pose a safety risk of being close to high-voltage equipment and is also inconvenient.

[0032] Reference Figure 3 In another embodiment of this application, in order to solve the above problems, the movable frame 11 is not a single rod, but includes: a base 111, a vertical rod 112 fixed to the base 111, a rope winder 113, an insulating hook 114, and a support platform 115.

[0033] The base 111 serves as a support for the vertical rod 112, which can be a heavy concrete block. The vertical rod 112 is vertically fixed to the base 111, and the vertical rod 112 is preferably made of a rigid insulating material. The support platform 115 is horizontally fixed to the upper end of the vertical rod 112 and extends toward the movable frame 12. The rope winder 113 is vertically installed on the side of the vertical rod 112 and is located on the side of the vertical rod 112 away from the support platform 115. It is understood that the rope winder is a device that achieves orderly winding of cables by manual or electric drive. In this embodiment, the rope winder is preferably driven by a motor to wind and unwind the rope 13, which is existing technology and will not be described in detail. In order to better fix the rope winder 113, a bracket for supporting the rope winder 113 is fixed on the side of the vertical rod 112. In this embodiment, the rope 13 is not a single complete rope, but is divided into two sections, A and B. One end of section A is fixed to the rope reel 113, and the other end passes through the rope reel 113 into the vertical rod 112, and exits from the vertical rod 112 and is fixed to the tail of the insulating hook 114. In order to guide the extension direction of section A out of the vertical rod 112 to remain horizontal, a horizontal tube of insulating material is also provided at the upper end of the vertical rod 112, through which section A exits from the vertical rod 112. A hook groove for temporarily storing the insulating hook 114 is provided along the length direction on the bearing platform 115. The upper part of the hook groove and the end away from the rope reel 113 are open, so that the insulating hook 114 can be stored vertically in the hook groove. Correspondingly, one end of section B is laterally fixed with a ring 124 for connecting the insulating hook 114, and the other end is connected to the movable frame 12. In this embodiment, the ring 124 is ring-shaped and made of insulating material.

[0034] In use: The operator holds the movable frame 2 12 and places the ring buckle 124 on the movable frame 2 12 onto the insulating hook 114 from top to bottom. The ring buckle 124 pulls the A section connected to the insulating hook 114 out of the rope reel 113, thus avoiding the step of manually adjusting the rope 13.

[0035] It is understandable that, since post insulators are generally installed on high-voltage equipment or poles, and there are cables and other obstacles nearby, if the movable frame 2 12 is a vertical pole, it may cause the movable frame 2 12 to accidentally touch the surrounding high-voltage equipment, poles and other obstacles when it is used to hook the insulating hook 114, thus causing safety problems.

[0036] Reference Figure 3 In order to solve the above problems, in another embodiment of this application, the movable frame 2 12 is not a single rod, but includes: a base 2 121, a vertical rod 2 122 fixed to the base 2 121, a rope winder 2 123, a ring buckle 124, a guide rod 125 and a pulley 126.

[0037] Rope winder 2 123 is installed on the side of vertical rod 2 122 away from vertical rod 1 112. Another bracket for supporting rope winder 2 123 is also installed on the side of vertical rod 2 122. Guide rod 125 is horizontally fixed to the upper end of vertical rod 2 122 with its end facing the support platform 115 of vertical rod 1 112. A groove for guiding the movement direction of segment B is formed on the upper part of guide rod 125 along its length. A vertical slot is formed at the end of guide rod 125. Pulley 126 is vertically and rotatably connected to this slot. The middle part of pulley 126 is recessed along its circumference to facilitate guiding segment B. One end of segment B is fixed to rope winder 2 123. The other end passes through the rope reel 123 into the vertical rod 122, and then through the groove on the upper part of the guide rod 125 and down through the pulley 126, where the ring buckle 124 is fixed laterally. A limit buckle 127 is also installed at the end of the guide rod 125. The limit buckle 127 includes two side plates fixed to both sides of the guide rod 125 and a horizontal plate fixed to the upper part of the two side plates. The horizontal plate is located above the rope 13 passing through the pulley 126 and is used to prevent section B from disengaging from the pulley 126. At the same time, when section B is retracted into the rope reel 123, the ring buckle 124 can be temporarily fixed laterally to the front of the limit buckle 127.

[0038] In use: By pushing base one 111 and base two 121, the guide rod 125 extends into the upper side of the insulator to be tested, and the ring 124 on the guide rod 125 is fastened to the insulating hook 114 on the bearing platform 115. Then, base one 111 and base two 121 are separated to a safe distance, and rope reel one 113 and rope reel two 123 release the corresponding length of rope 13 simultaneously. It can be understood that the safe distance refers to the distance at which the vertical rod one 112 and vertical rod two 122 are unlikely to accidentally touch the high-voltage equipment.

[0039] It is understandable that, since the detection mechanism 2 needs to obtain clear image data, the detection mechanism 2 temporarily fixed on the rope 13 should be as stable as possible and not shake. Therefore, the detection mechanism 2 cannot use the above-mentioned plastic clip to hold the rope 13 to fix the base of the camera 23, otherwise the camera 23 will be easily shaken by wind and other factors.

[0040] Reference Figure 4In another embodiment of this application, in order to more stably fix the detection mechanism 2 on the rope 13, the detection mechanism 2 includes a suspension seat 21, a lifting seat 22, and a camera 23 installed in the lifting seat 22. The suspension seat 21 is hemispherical and hollow inside. The suspension seat 21 has a through hole in the transverse direction. Section A passes through the through hole so that the suspension seat 21 can be suspended on the rope 13. It can be understood that in this embodiment, the rope 13 and the insulating hook 114 are fixed by fixing the threaded end of the rope 13 with insulating material, and the thread is provided at the tail of the insulating hook 114 to thread the rope 13 to the insulating hook 114 so that the rope 13 can be inserted into the suspension seat 21.

[0041] Below the suspension seat 21 is a hemispherical, hollow lifting seat 22. The radius of the lifting seat 22 is smaller than that of the suspension seat 21, and the weight of the suspension seat 21 is greater than that of the lifting seat 22. The reason for this design of the suspension seat 21 and the lifting seat 22 is that it can make the center of gravity of the detection mechanism 2 relatively close to the rope 13, making the center of gravity relatively stable, thereby reducing the swaying amplitude of the camera 23 caused by the swaying of the rope 13 in the wind. The lifting base 22 is preferably made of an insulating transparent material to reduce the possibility of electric shock to the camera 23 and facilitate the camera 23 to acquire image data. The camera 23 can be installed in the lifting base 22 by fixing the base of the camera 23 to the upper part inside the lifting base 22, and the camera 23 can rotate 360° horizontally on the base to facilitate the camera 23 to acquire image data.

[0042] It is understandable that when the rope reel 113 connected to section A is retracted, the detection mechanism 2 will be temporarily placed on the support platform 115. Therefore, in this embodiment, a groove is provided on the support platform 115 for temporarily storing the detection mechanism 2. The upper part of the groove and the end away from the rope reel 113 are open, so that the detection mechanism 2 can pass through the groove when it is retracted along with section A.

[0043] It is understood that the aforementioned suspension seat 21 is only suspended on the rope 13 and is not fixed. In order to enable the detection mechanism 2 to move synchronously when section A is retracted or released, the detection mechanism 2 in this embodiment also includes a locking unit 24 for clamping the temporary fixed suspension seat 21 of section A.

[0044] The locking unit 24 includes a rope guide tube 241, an electric cylinder 242, and a pressing plate 243. The rope guide tube 241 is inserted and fixed in the through hole of the suspension seat 21, so that section A passes through the rope guide tube 241 into the suspension seat 21. The upper half of the rope guide tube 241 is empty. The electric cylinder 242 is installed in the suspension seat 21 and is located above the rope guide tube 241. The output shaft of the electric cylinder 242 faces downward. The electric cylinder 242 is preferably a servo electric cylinder. The pressing plate 243 is arc-shaped to facilitate clamping the rope 13. A rubber layer is installed on the side of the pressing plate 243 facing the rope 13 to increase the coefficient of friction, thereby clamping the rope 13 more securely.

[0045] In use: The electric cylinder 242 pushes the pressing plate 243, so that the pressing plate 243 can press the rope 13 onto the rope guide tube 241, thereby temporarily fixing the suspension seat 21 to section A.

[0046] It is understandable that, since the height of the rope 13 is limited to above the insulator, the camera 23 can only obtain image data above the insulator. In order to enable the camera 23 to obtain image data below the insulator, in this embodiment, a lifting unit 25 is also installed inside the suspension seat 21.

[0047] The lifting unit 25 includes a rotary motor 251, a winding rod 252, and a wire 253. The rotary motor 251 is fixed inside the lifting seat 22 with its output shaft horizontal. One end of the winding rod 252 is horizontally fixed to the output shaft of the rotary motor, and the other end is rotatably connected to the lifting seat 22. The wire 253 is wound around the winding rod 252 and one end extends vertically downward through the suspension seat 21 and is finally fixedly connected to the upper part of the lifting seat 22. Circular plates are vertically fixed on the left and right sides of the wire 253 on the winding rod 252 to prevent the wire 253 from getting caught in the output shaft of the rotary motor.

[0048] In use: The winding rod 252 is rotated by the rotating motor 251 to lower the wire body 253, so that the lifting seat 22 is also lowered, thereby enabling the camera 23 to acquire image data from the lowered insulator.

[0049] Considering that during use, vertical pole 112 and vertical pole 2122 need to be moved horizontally to allow the loop 124 to be fastened to the insulating hook 114, and also need to be moved vertically to raise the rope 13 above the insulator, it would be inconvenient and pose a safety hazard if workers manually adjusted vertical pole 112 and vertical pole 2122.

[0050] Reference Figure 5 and Figure 6In another embodiment of this application, electric push rods 14 are vertically fixed to the upper parts of base 111 and base 2 121 respectively. The push rod ends of the two electric push rods 14 are respectively fixed to the bottom of vertical rod 112 or vertical rod 2 122, so as to realize the vertical movement of vertical rod 112 and vertical rod 2 122.

[0051] A moving mechanism 3 is fixed to the lower part of base 111 and base 21 respectively. The moving mechanism 3 includes: a load-bearing seat 31, an electric push rod 2 32, a moving seat 33, a track 34 (note that in this embodiment, it refers to a complete track drive structure and not just a single belt) and a steering unit 35. The upper part of the load-bearing seat 31 is fixed to the lower part of base 111 or base 2121, and the periphery of the load-bearing seat 31 extends downward to form a rectangular inner cavity. The electric push rod 2 32 is vertically fixed to the upper part of the inner cavity of the load-bearing seat 31. The push rod of the electric push rod 2 32 is rotatably connected to the moving seat 33, and the push rod extends laterally after entering the moving seat 33 so that the moving seat 33 can be retracted when the electric push rod 2 32 retracts. The moving seat 33 is rectangular, and the tracks 34 are installed on both sides of the moving seat 33 to facilitate travel on uneven surfaces such as substations.

[0052] The steering unit 35 includes a gear 351 fixed to the upper part of the movable seat 33. The middle part of the gear 351 is open, and the push rod of the electric push rod 32 is fixedly connected to the movable seat 33 through the opening of the gear 351. A rotary motor 352 is vertically fixed to the upper part of the inner cavity of the load-bearing seat 31. A gear 353 is coaxially fixed on the output shaft of the rotary motor 352. The gear 351 meshes with the gear 353. In this embodiment, the length of the movable seat 33 is less than that of the load-bearing seat 31, allowing the movable seat 33 to rotate laterally in the inner cavity of the load-bearing seat 31. The thickness of the gear 351 is equal to the length of the push rod of the electric push rod 32 plus the thickness of the gear 353. The maximum distance between the end of the output shaft of the rotary motor 352 and the movable seat 33 is equal to the length of the push rod of the electric push rod 32, so that the gear 351 can always mesh with the gear 353.

[0053] In this embodiment, a storage battery is also installed in the base 111 and the base 2 121 to provide power to the above-mentioned electric structures.

[0054] Reference Figure 7To facilitate the movement of base 111, base 21, or vertical rod 112, vertical rod 2122 by the moving mechanism 3, in another embodiment of this application, a controller 4 and a signal transmission module 5 are also installed in the movable base. In this embodiment, the controller 4 can be a microcontroller controller 4, and the signal transmission module 5 can be a 4G / 5G module. The aforementioned rotary motor 251, rotary motor 252, rope winder 113, rope winder 2123, electric push rod 14, electric push rod 22, track 34, electric cylinder 242, and camera 23 are connected to the controller 4 via the signal transmission module 5. In this embodiment, the operator can remotely input parameters and commands to the controller 4 via a mobile terminal (such as a mobile phone) to control the displacement mechanism.

[0055] The controller 4 mentioned above is configured as follows: 1) Obtain the target spacing, displacement direction, and rope height preset by the staff; It is understandable that the target spacing refers to the safe distance between vertical pole 112 and vertical pole 2122 and the substation structure and high-voltage equipment.

[0056] The direction of displacement refers to the fact that the directions of displacement of vertical rod 112 and vertical rod 2122 will change due to the following situations during movement: One is that the vertical rod 112 and the vertical rod 2 122 move towards each other, so that the ring 124 is fastened to the insulating hook 114; Secondly, when the bent section of the insulating hook 114 in the above process extends into the ring buckle 124, the vertical rod 112 and the vertical rod 2 122 move in opposite directions, causing the insulating hook 114 to hook the ring buckle 124, until the vertical rod 112 and the vertical rod 2 122 move to the target distance. Thirdly, when the rope 13 inside the first rope reel 113 and the second rope reel 123 is pulled out, and the camera 23 has acquired image data from the insulator, the first vertical rod 112 and the second vertical rod 122 will move towards each other for the second time in order to separate the insulating hook 114 and the ring buckle 124. Fourthly, after the aforementioned insulating hook 114 is disengaged from the ring buckle 124, the first vertical rod 112 and the second vertical rod 122 move in opposite directions for the second time. Unlike the second case, the first vertical rod 112 and the second vertical rod 122 are not connected by the rope 13. The first vertical rod 112 and the second vertical rod 122 will move to the target distance again. It is understandable that, considering that most post insulators in substations, power plants, etc. are often not installed one on a single beam of a frame, but rather multiple post insulators are arranged at similar intervals, in this embodiment, when performing fault detection on the insulators, it is not to detect only a single insulator at a time, but to detect multiple insulators arranged at similar intervals in the same direction in sequence.

[0057] According to the above, there is also a fifth case: after the camera 23 in case four has detected a certain insulator, if there are other adjacent insulators in a certain direction of the insulator, the rotary motor 2 352 is controlled to rotate in that direction (usually rotated 90°), and then the vertical rod 112 and the vertical rod 2 122 are controlled to move a preset distance, which is the interval between the adjacent insulators in case one.

[0058] The height of rope 13 refers to: being at least greater than the height of the insulator to be tested, and maintaining at least a safe distance from the crossbeams of the substation structure (determined according to actual conditions).

[0059] 2) Adjust the base 111 and base 21 to the initial distance using the track 34, and adjust the height of the vertical rod 112 and vertical rod 2122 to be consistent using the electric push rod 14; Understandably, the initial spacing refers to the distance between the first insulator to be tested when the staff first sets up the movable frame 11 and the second movable frame 12 on both sides of the insulator, and makes the guide rod 125 and the bearing platform 115 as close as possible so that the ring buckle 124 can be fastened to the insulating hook 114. At this time, the distance between the first vertical rod 112 and the second vertical rod 122 is the initial spacing.

[0060] To facilitate the fastening of the ring 124 onto the insulating hook 114, before fastening, the first vertical rod 112 and the second vertical rod 122 need to be adjusted to the same height using the electric push rod 14. When the ring 124 is close to the insulating hook 114, the electric push rod 14 is controlled to slightly raise the second vertical rod 122. When the ring 124 is just above the insulating hook 114, the electric push rod 14 is then controlled to lower the second vertical rod 122 to the same height as the first vertical rod 112, so that the ring 124 is fastened onto the insulating hook 114.

[0061] It is understandable that, since a camera 23 is temporarily placed on the carrying platform 115 at this time, in this embodiment, the staff can temporarily obtain image or video information of the buckle 124 fastening the insulating hook 114 through the camera 23, so that the staff can complete the above operation.

[0062] 3) Adjust the rope 13 to the corresponding height by controlling electric push rod 14 and electric push rod 32 according to the height of the rope 13; It is understandable that although vertical rod 112 and vertical rod 122 are kept at the same height in step three, the height of the corresponding rope 13 may not be at a suitable height to suspend the detection mechanism 2, so the height of the rope 13 needs to be further adjusted.

[0063] 4) According to the target spacing, control the base 111 and base 21 to move the corresponding distance through the track 34, and control the rope reel 113 and rope reel 2123 to release or retract the rope 13 length corresponding to the moving distance. It is understandable that when the track 34 rotates and causes the moving seat 33 to move, the first rope reel 113 and the second rope reel 123 will also release or retract the rope 13 synchronously, so that the distance between the first vertical rod 112 and the second vertical rod 122 is always equal to the total length of the rope 13 released by the first rope reel 113 and the second rope reel 123.

[0064] 5) If it is necessary to adjust the displacement direction, control the electric push rod 2 32 to pull back the moving seat 33, and control the rotary motor 2 352 to rotate the moving seat 33 to the corresponding direction, and then control the electric push rod 2 32 to push out the moving seat 33. It is understandable that when the electric push rod 32 pulls back the movable seat 33, the load-bearing seat 31 supports the base 111 or the base 2 121 until the movable seat 33 rotates to the target displacement direction within the inner cavity of the load-bearing seat 31. Then, the electric push rod 32 is controlled to push the movable seat 33 out, and the load-bearing seat 31 is lifted upward and lifted off the ground.

[0065] 6) If the suspension seat 21 needs to move with the rope 13, the electric cylinder 242 is lowered to press the pressing plate 243 against the rope 13. It is understandable that the initial state of the suspension seat 21 on the rope 13 is that it is suspended and temporarily docked on the support platform 115. In order for the suspension seat 21 to be moved by the rope 13, it is necessary to temporarily fix the suspension seat 21 on the rope 13 so that the left and right movement of the rope 13 can drive the suspension seat 21 to move.

[0066] 7) According to the direction of movement of the suspension seat 21 on the rope body 13, control the first rope reel 113 or the second rope reel 123 to rotate and retract the rope body 13, and the other rope reel 113 or the second rope reel 123 rotates in the opposite direction and releases the rope body 13 of the same length. Example: If rope reel 113 is on the left side of the insulator under test and rope reel 2 123 is on the right side of the insulator under test, when rope reel 113 releases section A, rope reel 2 123 retracts section B of the corresponding length. At this time, the position of the suspension seat 21 in section A does not change, but relative motion occurs with the insulator, that is, it moves to the right. The reason for ensuring that the ropes 13 are of equal length is to keep the ropes 13 taut at all times to prevent them from falling. Therefore, the first rope reel 113 and the second rope reel 123 need to release or retract the ropes 13 with opposite operating logic and the same operating rate.

[0067] 8) If it is necessary to obtain image data below the insulator, control the rotary motor 251 to rotate the lowering body 253 to lower the lifting seat 22, and control the camera 23 to obtain the corresponding image data.

[0068] Understandably, since the rope 13 is located above and to the side of the insulator to be tested, the image data acquired by the camera 23 is limited to the top of the insulator. In order to acquire image data from the bottom of the insulator, the camera 23 needs to be lowered by the lifting platform 22.

[0069] The displacement data required for each of the above situations can be obtained by the staff through drawing information and actual measurement, and then input into the controller 4, or the staff can directly remotely control the moving mechanism 3 and the detection mechanism 2 through a mobile terminal.

[0070] Based on the above, this application uses the moving mechanism 3 to drive the supporting mechanism 1 to move, so that the detection mechanism 2 can automatically detect faults in multiple insulators in the same direction. This not only allows the staff to operate away from electrical equipment during fault detection, reducing the possibility of electric shock, but also improves the efficiency of fault detection.

[0071] This application also discloses a method for detecting live faults in high-voltage power transmission and transformation networks.

[0072] A method for detecting live faults in high-voltage power transmission and transformation networks, wherein the high-voltage power transmission and transformation network live fault detection system described in any of the above-mentioned methods is used to detect faults in insulators.

[0073] The above content has already explained how to use the system, so it will not be repeated here.

[0074] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A high-voltage power transmission and transformation network live fault detection system, characterized in that: It includes a support mechanism (1) and a detection mechanism (2), wherein the support mechanism (1) includes: The movable frame 1 (11) is erected vertically and its height is at least higher than the crossbeam of the substation frame; The second movable frame (12) is located to the side of the first movable frame (11) and its height is adapted to the first movable frame (11). The rope (13) is used to cross the crossbeam of the substation frame and is connected at one end to the movable frame one (11) and at the other end to the movable frame two (12). At least the rope (13) is an insulating structure, and the detection mechanism (2) is slidably connected to the rope (13) with the end used for detection facing the insulator.

2. The high-voltage power transmission and transformation network live fault detection system according to claim 1, characterized in that: The movable frame 1 (11) includes a base 1 (111), a vertical rod 1 (112) fixed to the base 1 (111), a rope winder 1 (113), an insulating hook (114), and a support platform (115). The support platform (115) is fixed to the upper end of the vertical rod 1 (112), and the rope winder 1 (113) is installed on the vertical rod 1 (112) or the support platform (115). The rope (13) includes section A and section B. One end of section A is fixed to the rope reel (113) and the other end is fixed to the insulating hook (114). The carrying platform (115) is provided with a hook groove for temporarily storing an insulating hook (114), and the upper part of the hook groove and the end away from the rope reel (113) are open. One end of section B is connected to the movable frame two (12) and the other end is fixed with a ring (124) for fastening to the insulating hook (114).

3. The high-voltage power transmission and transformation network live fault detection system according to claim 2, characterized in that: The movable frame two (12) includes a base two (121), a vertical rod two (122) fixed to the base two (121), a rope winder two (123), a ring buckle (124), and a guide rod (125). The rope winder two (123) is installed on the vertical rod two (122). The guide rod (125) is fixed to the upper end of the vertical rod two (122) and its end faces the vertical rod one (112). The upper part of the guide rod (125) has a guide along its length. The groove of section B; a pulley (126) is vertically installed at the end of the guide rod (125), one end of section B is fixed to the second rope winder (123), the other end passes through the second vertical rod (122) and through the groove of the guide rod (125) and then passes through the pulley (126) from top to bottom and the end is fixed with a ring buckle (124); a limit buckle (127) is installed above the pulley (126), and the limit buckle (127) is used to prevent section B from falling off the pulley (126).

4. The high-voltage power transmission and transformation network live fault detection system according to claim 3, characterized in that: The detection mechanism (2) includes a suspension seat (21), a lifting seat (22), and a camera (23). The suspension seat (21) has a through hole in the transverse direction, and section A passes through the through hole. A locking unit (24) for clamping section A is installed inside the suspension seat (21). The lifting seat (22) is connected to the base below through a lifting unit (25). The lifting seat (22) is hollow inside and has a camera (23) installed inside. The carrying platform (115) is also provided with a groove for temporarily storing the detection mechanism (2), and the upper part of the groove and the end away from the rope reel (113) are open.

5. The high-voltage power transmission and transformation network live fault detection system according to claim 4, characterized in that: The locking unit (24) includes a rope tube (241), an electric cylinder (242), and a pressing plate (243). The rope tube (241) is inserted and fixed in the through hole of the suspension seat (21). The A section is inserted through the rope tube (241) into the suspension seat (21). The upper half of the rope tube (241) is empty. The electric cylinder (242) is located above the rope tube (241) with its output shaft facing down. The pressing plate (243) is horizontally fixed to the end of the output shaft of the electric cylinder (242). The pressing plate (243) is used to cooperate with the rope tube (241) to clamp the A section.

6. The high-voltage power transmission and transformation network live fault detection system according to claim 5, characterized in that: The lifting unit (25) includes a rotary motor (251), a winding rod (252), and a wire (253). The rotary motor (251) is fixed inside the suspension seat (21) and its output shaft is horizontal. One end of the winding rod (252) is horizontally fixed to the output shaft of the rotary motor (251), and the other end is rotatably connected to the lifting seat (22). The wire (253) is wound around the winding rod (252) and one end passes downward through the suspension seat (21) and is fixedly connected to the upper part of the lifting seat (22).

7. The high-voltage substation live-line fault detection system according to claim 6, characterized in that: The upper parts of the base one (111) and the base two (121) are respectively vertically fixed with electric push rod one (14), and the push rod ends of the two electric push rods one (14) are respectively fixed to the bottom of the vertical rod one (112) and the vertical rod two (122); The lower parts of the base one (111) and the base two (121) are respectively fixed with a moving mechanism (3). The moving mechanism (3) includes a load-bearing seat (31), an electric push rod two (32), a moving seat (33), a track (34), and a steering unit (35) used to control the rotation of the moving seat (33). The upper part of the load-bearing seat (31) is fixed to the lower part of the base one (111) or the base two (121), and the periphery of the load-bearing seat (31) extends downward to form an inner cavity. The electric push rod two (32) is vertically fixed to the inner cavity of the load-bearing seat (31), and the push rod of the electric push rod two (32) is rotatably connected to the upper part of the moving seat (33). Tracks (34) are installed on both sides of the moving seat (33). The steering unit (35) includes a gear one (351) fixed on the upper part of the moving seat (33), a rotary motor two (352) vertically fixed in the inner cavity of the load-bearing seat (31), and a gear two (353) coaxially fixed on the output shaft of the rotary motor two (352). The gear one (351) meshes with the gear two (353).

8. The high-voltage substation live-line fault detection system according to claim 7, characterized in that: A controller (4) and a signal transmission module (5) are installed inside the base one (111) or the base two (121). The signal transmission module (5) is electrically connected to the controller (4). The rotary motor one (251), rotary motor two (352), rope winder one (113), rope winder two (123), electric push rod one (14), electric push rod two (32), track (34), electric cylinder (242), and camera (23) are connected to the controller (4) via the signal transmission module (5). The controller (4) is configured as follows: Obtain the target spacing, displacement direction and rope (13) height preset by the staff; The base 1 (111) and base 2 (121) are adjusted to the initial distance by means of the track (34), and the height of the vertical rod 1 (112) and vertical rod 2 (122) are adjusted to be consistent by means of electric push rod 1 (14); According to the height of the rope (13), control the electric push rod one (14) and the electric push rod two (32) to adjust the rope (13) to the corresponding height; According to the target spacing, the track (34) controls the base one (111) and base two (121) to move the corresponding distance, and controls the rope reel one (113) and rope reel two (123) to release or retract the rope (13) length corresponding to the target spacing. According to the displacement direction, control the electric push rod two (32) to pull back the moving seat (33), and control the rotary motor two (352) to rotate the moving seat (33) to the corresponding direction, and then control the electric push rod two (32) to push out the moving seat (33). If the suspension seat (21) needs to move with the rope (13), the control cylinder (242) descends to press the pressing plate (243) against the rope (13). According to the direction of movement of the suspension seat (21) on the rope (13), control the first rope reel (113) or the second rope reel (123) to rotate and retract the rope (13), and the other first rope reel (113) or the second rope reel (123) rotates in the opposite direction and releases the same length of rope (13). If it is necessary to obtain image data below the insulator, control the rotary motor (251) to rotate the lowering body (253) to lower the lifting seat (22), and control the camera (23) to obtain the corresponding image data.

9. A method for detecting live faults in high-voltage power transmission and transformation networks, characterized in that: The high-voltage power transmission and transformation network live fault detection system as described in any one of claims 1-8 is used to detect live faults in insulators.

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