Intelligent monitoring device for ground fault of power transmission line

Abstract

The invention belongs to the field of power transmission line detection equipment, and particularly discloses a power transmission line ground fault intelligent monitoring device which comprises a base, a ground fault sensor and a control module. A box body is fixedly installed above the base, and a box cover is movably arranged at an opening in the upper portion of the box body. The movable cavity is arranged on one side of the box body, the grounding sliding cavity is arranged in the middle of the box body, and the mounting cavity is arranged close to the grounding sliding cavity; the grounding fault sensor and the control module are installed in the corresponding installation cavities. A connector is arranged in the movable cavity; a conductive block is vertically and slidably mounted in the grounding sliding cavity, the top of the conductive block is connected with a power transmission line through a connecting line, and a grounding pile is vertically and fixedly arranged at the bottom of the conductive block; and a lifter for driving the conductive block to move up and down is arranged on the box body. The conductive block and the ground pile are very convenient to operate, and the box cover is very convenient to open and close, so that the grounding detection and installation efficiency of the power transmission line is greatly improved, and the safe operation level of the power transmission line is effectively improved.

Description

Technical Field

[0001] This invention belongs to the field of power transmission line testing equipment, and specifically relates to an intelligent monitoring device for grounding faults in power transmission lines. Background Technology

[0002] Transmission lines use transformers to step up the voltage of electricity generated by generators, and then connect it to the power transmission system via circuit breakers and other control equipment, achieving efficient power transmission. Based on their structural form, they can be mainly divided into two categories: overhead transmission lines and cable lines. Among them, overhead transmission lines are widely used in power systems due to their advantages of low cost, short construction period, and ease of maintenance. They generally consist of towers, conductors, insulators, hardware, guy wires, tower foundations, and grounding devices. Based on the nature of the transmitted current, transmission methods include AC transmission and DC transmission. In overhead lines, the grounding device is a key component ensuring the safe and stable operation of the system. Its main function is to quickly conduct fault current to the ground in abnormal situations such as lightning strikes and short circuits, thereby protecting the line equipment and maintaining the normal operation of the power system.

[0003] Currently, most conventional grounding devices employ a design where conductors are directly buried in the soil. However, due to their long-term exposure to complex outdoor environments, grounding devices are susceptible to various factors such as soil erosion, geological subsidence, external tensile forces, and changes in soil physicochemical properties. This can lead to increased grounding resistance, corrosion of the grounding electrode, or loosening of connections, ultimately resulting in decreased grounding performance or even incomplete grounding. Real-time monitoring methods for the operational status of grounding devices are lacking, generally relying on periodic inspections or post-accident checks, making it difficult to detect latent grounding faults in a timely manner.

[0004] An existing invention patent with authorization announcement number CN112255570B discloses an intelligent sensing device for the grounding status of transmission lines. This device utilizes a grounding fault sensor to effectively monitor grounding faults in transmission lines. However, when inserting the ground stake into the ground, the device relies on a sleeve rod for driving. The downward movement of the sleeve rod can only be achieved manually by pressing or striking, which is very inconvenient. Furthermore, opening and closing the upper protective cover is also very difficult, thus seriously affecting the monitoring and installation of grounding lines. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention aims to provide an intelligent monitoring device for grounding faults in transmission lines. The device features convenient operation of the conductive blocks and ground stakes, and easy opening and closing of the cover, thereby greatly improving the efficiency of grounding detection and installation for transmission lines and effectively enhancing the safe operation level of transmission lines.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A smart monitoring device for grounding faults in transmission lines includes a base, a grounding fault sensor, and a control module, with the control module connected to the grounding fault sensor. The base is fixed to the ground, and a housing is fixedly installed on top of the base. A cover is movably mounted on the opening of the housing. The housing is divided into a movable cavity, a grounding sliding cavity, and two mounting cavities by a partition. The movable cavity is located on one side of the housing, the grounding sliding cavity is located in the middle of the housing, and the mounting cavities are located adjacent to the grounding sliding cavity. The grounding fault sensor and the control module are installed in their respective mounting cavities. A connector is provided in the movable cavity, and the cover can be opened and closed to one side of the housing via the connector. A conductive block is vertically slidably installed in the grounding sliding cavity. The top of the conductive block is connected to the transmission line via a connecting wire, and a grounding stake is vertically fixed at the bottom of the conductive block. A first through hole and a second through hole are respectively opened downward through the bottom of the grounding sliding cavity and the base. The grounding device is inserted into the ground through the two through holes. A lifter is provided on the housing for driving the conductive block to move up and down.

[0007] Preferably, the lifting device includes a screw and a first connecting plate. The screw is horizontally installed outside the housing, and a crank is installed at the end of the screw. Corresponding moving blocks are respectively fitted on the positive and negative threads on both sides of the screw. The first connecting plate is horizontally positioned below the two moving blocks. A vertical hole is vertically opened through the side wall of the housing, and the second connecting plate is slidably engaged in the vertical hole. One end of the second connecting plate is fixedly connected to the first connecting plate, and the other end extends through into the grounding sliding cavity and is fixedly connected to the conductive block. The lower ends of the two moving blocks are rotatably connected to the upper ends of the corresponding fourth connecting rods. The lower ends of the two fourth connecting rods are symmetrically arranged at an incline and rotatably connected to the upper sides of the first connecting plate.

[0008] Preferably, the connector includes a slider and a third link. The upper part of the slider is slidably mounted on the bottom of the cover, and the lower part of the slider is rotatably connected to the edge of the opening of the box. The upper end of the third link is rotatably connected to the bottom of the cover, and the lower end of the third link is rotatably connected to the movable cavity.

[0009] Preferably, a rotating shaft is horizontally installed on the inner wall of the movable cavity, one end of the swing arm is rotatably mounted on the rotating shaft, and the other end of the third connecting rod is fixedly connected to the swing arm at a certain angle along the radial direction of the rotating shaft; the other end of the swing arm is rotatably connected to a hinge seat, the hinge seat is fixedly connected to the upper end of the tension spring, and the lower end of the tension spring is connected to the inner wall of the movable cavity.

[0010] Preferably, a slide rail is horizontally fixed on the underside of the box cover, and the slider is slidably mounted on the slide rail; a buckle groove is installed on the top of the box cover.

[0011] Preferably, the slide rail has a T-shaped design, and the slider has a T-shaped groove that mates with the slide rail.

[0012] Preferably, an L-shaped seat is provided below the box cover, one end of which is fixedly connected to the bottom of the box cover, and the other end is rotatably connected to the upper end of the third connecting rod.

[0013] Preferably, the conductive block is cylindrical, and the grounding cavity is a circular chamber that mates with the conductive block.

[0014] Preferably, a conductive ring is fixed in the groove at the top of the conductive block, and the connecting wire is connected to the wire ring.

[0015] Preferably, mounting holes are provided on both sides of the base, and pins in the mounting holes fix the base to the ground.

[0016] The beneficial effects of this invention are as follows: 1. When the lid of the box opens to the side via the latching groove, the third link rotates around the pivot. Since the swing arm and the third link are fixed at a certain angle, the synchronous rotation of the swing arm causes the hinge seat to rotate upward and lengthen the tension spring. When the lid rotates to the side, the slider rotates around the hinge point on the side of the box, and the lid slides downward and to the side of the box, allowing the lid to swing to a vertical position outside the box. Under the weight of the lid itself, the lid remains open. When the lid closes, it can be manually pushed upward to return to its original position via the latching groove. The tension spring provides elasticity for the lid's return, making it easier and more convenient until the lid is completely closed at the box opening. The elastic tension of the tension spring provides pressure for the lid's closing, preventing accidental opening.

[0017] 2. When the screw is rotated by the crank handle, the movable blocks sleeved on the positive and negative threads on both sides of the screw can move closer to each other. Under the sliding limit of the second connecting plate and the CNC, the linkage can push the first connecting plate and the second connecting plate to move downward, thereby driving the conductive block and the ground pile to move downward, so that the ground pile can penetrate the first through hole and the second through hole and be inserted into the ground to realize the grounding operation, making the grounding operation of this application more convenient and efficient. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the installation of the connector of the present invention; Figure 3 This is a top view of the various chambers inside the housing of the present invention. Detailed Implementation

[0019] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are for illustrative purposes only and are not intended to limit the scope of the invention.

[0020] like Figure 1-3 As shown, this invention proposes an intelligent monitoring device for grounding faults in transmission lines, including a base 2, a grounding fault sensor 72, and a control module 71. The base 2 is fixed to the ground. Specifically, mounting holes are provided on both sides of the base 2, and pins 21 installed in the mounting holes fix the base 2 to the ground. This application improves the ease of installation and construction efficiency by fixing the base 2 to the ground using pins 21.

[0021] A housing 1 is fixedly mounted on top of the base 2, and a cover 3 is movably mounted on the opening at the top of the housing 1. The housing 1 is divided into a movable cavity 12, a grounding sliding cavity 14, and two mounting cavities 13 by a partition. The movable cavity 12 is located on one side of the housing 1, the grounding sliding cavity 14 is located in the middle of the housing 1, and the mounting cavities 13 are located adjacent to the grounding sliding cavity 14. A ground fault sensor 72 and a control module 71 are installed in the corresponding mounting cavities 13. A detection hole is provided between the mounting cavity 13 and the grounding sliding cavity 14. The monitoring end of the ground fault sensor 72 can perform ground fault monitoring through the detection hole. The control module 71 is connected to the ground fault sensor 72 and can effectively analyze and process the monitoring signal of the ground fault sensor 72, and wirelessly transmit the analysis results to the control center. The ground fault sensor 72 and the control module 71 used in this embodiment are both commonly used technologies in the prior art, and their principles and structures are well known to those skilled in the art.

[0022] A connector 6 is installed inside the movable cavity 12, allowing the cover 3 to open and close to one side of the housing 1 via the connector 6. The connector 6 includes a slider 61 and a third connecting rod 62. The upper part of the slider 61 is horizontally slidably mounted on the bottom of the cover 3, and the lower part of the slider 61 is rotatably connected to the edge of the opening in the housing 1. The upper end of the third connecting rod 62 is rotatably connected to the bottom of the cover 3. A slide rail 32 is horizontally fixed on the lower part of the cover 3, and the slider 61 is slidably mounted on the slide rail 32. Specifically, the slide rail 32 has a T-shaped design, and the slider 61 has a T-shaped groove that mates with the slide rail 32. An L-shaped seat 33 is located below the cover 3, with one end fixedly connected to the bottom of the cover 3 and the other end rotatably connected to the upper end of the third connecting rod 62. A rotating shaft 63 is horizontally mounted on the inner wall of the movable cavity 12. One end of the swing wall 64 is rotatably mounted on the rotating shaft 63, and the other end of the third connecting rod 62 is fixedly connected to the swing wall 64 at a certain angle along the radial direction of the rotating shaft 63. The other end of the swing wall 64 is rotatably connected to a hinge seat 65, which is fixedly connected to the upper end of a tension spring 66. The lower end of the tension spring 66 is connected to the inner wall of the movable cavity 12. A latching groove is installed on the top of the lid 3 for applying force to open and close the lid 3.

[0023] When the cover 3 is opened to the side by the latch groove, the third link 62 will rotate around the pivot 63. Since the swing wall 64 and the third link 62 are fixed at a certain angle, the synchronous rotation of the swing wall 64 will cause the hinge seat 65 to rotate upward and stretch the tension spring 66. When the cover 3 is rotated to the side, with the cooperation of the T-slot on the slider 61 and the slide rail 32, the slider 61 will rotate around the hinge point on the side of the box body 1. The cover 3 will slide with the slider 61 and slide downward to the side of the box body 1, so that the cover 3 can finally swing to a vertical state outside the box body 1. At this time, under the action of the cover 3's own weight, the cover 3 can always remain open. When the lid 3 is closed, the lid 3 can be manually pushed upward to reset through the latch. Under the elastic force of the tension spring 66, the lid 3 can be reset with elastic force, making the reset of the lid 3 easier and more convenient, until the lid 3 is completely closed at the opening of the box body 1. Under the elastic tension of the tension spring 66, a certain pressure can be provided for the lid 3 to be fastened, so as to avoid accidental opening.

[0024] A wire-passing opening 31 is provided in the middle of the cover 3, through which the connecting wire passes. A conductive block 5 is vertically slidably installed inside the grounding sliding cavity 14, and the top of the conductive block 5 is connected to the power transmission line via a connecting wire. The conductive block 5 is cylindrical, and the grounding sliding cavity 14 is a circular chamber that mates with the conductive block 5. A conductive ring 51 is fixed in a groove on the top of the conductive block 5, and the connecting wire is connected to the conductor ring. The downward movement of the conductive block 5 can drive the ground stake 52 below to move synchronously. A grounding stake 52 is vertically fixed at the bottom of the conductive block 5. The bottom of the grounding sliding cavity 14 and the base 2 are respectively provided with a first through hole and a second through hole, through which the grounding device is inserted into the ground; the box body 1 is provided with a lifter for driving the conductive block 5 to move up and down. The lifting device includes a screw 41 and a first connecting plate 44. The screw 41 is horizontally installed outside the housing 1, and a crank 46 is installed at the end of the screw 41. Corresponding moving blocks 42 are respectively fitted on the positive and negative threads on both sides of the screw 41. The first connecting plate 44 is horizontally arranged below the two moving blocks 42. A vertical hole 11 is vertically opened through the side wall of the housing 1. The second connecting plate 45 is slidably locked in the vertical hole 11. One end of the second connecting plate 45 is fixedly connected to the first connecting plate 44, and the other end extends through into the grounding sliding cavity 14 and is fixedly connected to the conductive block 5. The lower ends of the two moving blocks 42 are rotatably connected to the upper ends of the corresponding fourth connecting rods 43. The lower ends of the two fourth connecting rods 43 are symmetrically arranged (in an inverted octagonal shape) and rotatably connected to the upper sides of the first connecting plate 44.

[0025] When the screw 41 is rotated by the crank 46, the movable blocks 42 sleeved on the positive and negative threads on both sides of the screw 41 can move closer to each other. Under the sliding limit of the second connecting plate 45 and the CNC, the action of the fourth connecting rod 43 can push the first connecting plate 44 and the second connecting plate 45 to move downward, thereby driving the conductive block 5 and the ground stake 52 to move downward, so that the ground stake 52 passes through the first through hole and the second through hole and is inserted into the ground, realizing the grounding operation, making the grounding operation of this application more convenient and efficient.

[0026] When using this invention, after fixing the base 2 to the ground with pins 21, one end of the connecting wire is connected to the top of the conductive block 5. Then, the crank handle 46 is turned, and the conductive block 5 is moved downwards by the cooperation of the screw 41, the fourth connecting rod 43, the connecting plate, and other structures, so that the ground stake 52 is inserted into the ground. Then, the other end of the connecting wire is passed through the wire hole 31 on the box cover 3 and connected to the power transmission line. With the cooperation of the connector 6, the box cover 3 is slidably rotated and locked at the opening of the box body 1 through the fastening groove. Through the detection and analysis of the ground fault sensor 72 and the control module 71, the ground fault of the power transmission line can be effectively monitored, and the analysis results can be wirelessly transmitted to the control center in real time.

[0027] Obviously, the embodiments described above are only some embodiments of this application, not all embodiments. The accompanying drawings show preferred embodiments of this application, but do not limit the patent scope of this application. This application can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this application's specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the scope of patent protection of this application.

Claims

1. A power transmission line ground fault intelligent monitoring device, comprising a base, a ground fault sensor and a control module, the control module being connected with the ground fault sensor; characterized in that: The base is fixed on the ground, the box body is fixedly installed above the base, and the box cover is movably arranged at the opening of the box body; the box body is divided into a movable cavity, a grounding sliding cavity and two installation cavities by a partition plate; the movable cavity is arranged on one side of the box body, the grounding sliding cavity is arranged in the middle of the box body, and the installation cavities are arranged close to the grounding sliding cavity; the grounding fault sensor and the control module are installed in the corresponding installation cavities; a connector is arranged in the movable cavity, and the box cover is arranged to be opened and closed to one side of the box body through the connector; a conductive block is vertically and slidably arranged in the grounding sliding cavity, the top of the conductive block is connected to a power transmission line through a connecting line, and the bottom of the conductive block is vertically and fixedly provided with a grounding pile; the bottom of the grounding sliding cavity and the base are respectively provided with a first through hole and a second through hole penetrating downward, and the grounding pile penetrates through the two through holes and is inserted into the ground; and a lifter for driving the conductive block to move up and down is arranged on the box body.

2. The transmission line ground fault intelligent monitoring device according to claim 1, characterized in that: The lifter comprises a screw rod and a first connecting plate, the screw rod is horizontally installed outside the box body, and the end of the screw rod is provided with a crank handle; corresponding moving blocks are respectively arranged on the front and back threads of the screw rod, the first connecting plate is horizontally arranged below the two moving blocks, a vertical hole is vertically and penetratingly arranged on the side wall of the box body, and a second connecting plate is slidably arranged in the vertical hole; one end of the second connecting plate is fixedly connected with the first connecting plate, the other end of the second connecting plate penetrates into the grounding sliding cavity and is fixedly connected with the conductive block; the lower ends of the two moving blocks are respectively rotatably connected with the upper ends of corresponding fourth connecting rods, and the lower ends of the two fourth connecting rods are symmetrically arranged and rotatably connected with the upper sides of the two sides of the first connecting plate.

3. The transmission line ground fault intelligent monitoring device of claim 1, wherein: The connector comprises a sliding block and a third connecting rod, the sliding block is horizontally and slidably arranged above the bottom of the box cover, the lower side of the sliding block is rotatably connected with the edge of the opening of the box body, and the upper end of the third connecting rod is rotatably connected with the bottom of the box cover; the lower end of the third connecting rod is rotatably connected in the movable cavity.

4. The transmission line ground fault intelligent monitoring device according to claim 3, characterized in that: A rotating shaft is horizontally arranged on the inner side wall of the movable cavity, one end of a swing arm is rotatably arranged on the rotating shaft, and the other end of the third connecting rod is fixedly connected with the swing arm in the radial direction of the rotating shaft at a certain angle; the other end of the swing arm is rotatably connected with a hinged seat, the hinged seat is fixedly connected with the upper end of a tension spring, and the lower end of the tension spring is connected with the inner wall of the movable cavity.

5. The transmission line ground fault intelligent monitoring device according to claim 4, characterized in that: A slide rail is transversely and fixedly arranged on the bottom of the box cover, and the sliding block is slidably arranged on the slide rail; a buckle groove is arranged on the top of the box cover.

6. The transmission line ground fault intelligent monitoring device according to claim 5, characterized in that: The slide rail is designed in a T shape, and a T-shaped groove is arranged on the sliding block and matched with the slide rail.

7. The transmission line ground fault intelligent monitoring device according to claim 3, characterized in that: An L-shaped seat is arranged below the box cover, one end of the L-shaped seat is fixedly connected with the bottom of the box cover, and the other end of the L-shaped seat is rotatably connected with the upper end of the third connecting rod.

8. The transmission line ground fault intelligent monitoring device of claim 1, wherein: The conductive block is designed in a cylindrical shape, and the grounding sliding cavity is a circular cavity matched with the conductive block.

9. The transmission line ground fault intelligent monitoring device according to claim 8, characterized in that: A conductive ring is fixedly arranged in the groove arranged on the top of the conductive block, and the connecting line is connected with the conductive ring.

10. The transmission line ground fault intelligent monitoring device of claim 1, wherein: Mounting holes are arranged on the two sides of the base, and the pins arranged in the mounting holes fix the base on the ground.

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