A switchgear discharge fault detection device

Abstract

This invention relates to the field of smart grid technology and discloses a switchgear discharge fault detection device. The device includes a cabinet with an arc-shaped cover fixedly installed on the outer wall of the bottom end. A detection component is mounted on the cabinet door. This switchgear discharge fault detection device, by setting up the detection component and cooperating with horizontal and vertical linear modules, enables the main asynchronous motor to move along two axes. When the main asynchronous motor is started, the rotating shaft drives the cross plate to rotate vertically. Multiple sets of hydraulic rods extend to extend corresponding detection mechanisms to perform multiple detection methods, improving accuracy and preventing the discharge phenomenon from going undetected due to the failure of a single detection method, thus avoiding more serious consequences and losses. This allows for better discharge fault detection and precise location of the discharge point. Furthermore, the detection component is integrated into the cabinet door, reducing the encroachment on the internal space of the cabinet and facilitating disassembly and maintenance.

Description

Technical Field

[0001] This invention relates to the field of smart grid technology, specifically to a switchgear discharge fault detection device. Background Technology

[0002] With the continuous development of smart grids, the reliability of switchgear, as a key piece of equipment in the power system, is of paramount importance. The internal structure of switchgear is in a high-voltage, high-current working environment for a long time, which makes it prone to discharge faults. Such faults can not only lead to a decline in the insulation performance of the equipment, but may also cause power outages in severe cases, affecting the stable operation of the entire power system.

[0003] Currently, in the prior art, for example, Chinese patent with publication number CN218497074U discloses a partial discharge fault detection device for switchgear. This device detects partial discharge faults on one side of the main body of the discharge equipment by means of a detector body working. The motor drives the threaded rod to rotate, thereby moving the detector body downward. The detector body detects different heights on one side of the main body of the discharge equipment. Rotating the convex ring causes the convex ring to rotate within the circular ring, adjusting the position of the detector body so that the detector body can detect the front, rear and other sides of the main body of the discharge equipment. It has a simple structure, low production cost and wide detection range.

[0004] However, the above-mentioned equipment has obvious shortcomings in use. It has a single detection method and cannot perform multiple detection methods to improve accuracy. As a result, it cannot avoid the situation where the discharge phenomenon cannot be detected in time when the single detection method is damaged, resulting in more serious consequences and losses. It cannot locate the specific discharge location. At the same time, the detection components are integrated into the cabinet, which will occupy the internal space of the cabinet and make it inconvenient to disassemble and maintain. In view of this, we propose a switch cabinet discharge fault detection device. Summary of the Invention

[0005] The purpose of this invention is to provide a switchgear discharge fault detection device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A switchgear discharge fault detection device includes a cabinet, an arc-shaped cover fixedly installed on the outer wall of the bottom end of the cabinet, a bottom groove formed at the bottom of the cabinet, a cabinet door hinged to the front end of the cabinet, electronic components disposed inside the cabinet, and a detection component disposed on the cabinet door, the detection component comprising:

[0008] A horizontal straight module is provided at the top of the cabinet door, and the top of the vertical frame is fixedly connected to the movable part of the horizontal straight module. A vertical straight module is provided on the vertical frame.

[0009] A main asynchronous motor is fixedly installed on the moving part of the vertical linear module. One end of the rotating shaft is fixedly installed at the output end of the main asynchronous motor, and the other end of the rotating shaft is fixedly installed inside the center of the cross plate.

[0010] A hydraulic rod is fixedly installed on the inner wall of the cross plate, and the piston end of the hydraulic rod is provided with a detection mechanism for detecting the discharge phenomenon of components inside the cabinet.

[0011] In a further embodiment, the detection mechanism includes a temperature sensor, and the temperature sensor is fixedly installed on the piston end of the hydraulic rod, so that when the temperature of the discharge area rises, the temperature sensor can monitor the temperature change in real time and locate the hot spot.

[0012] In a further embodiment, the detection mechanism includes an auxiliary asynchronous motor. The auxiliary asynchronous motor is fixedly mounted on the piston end of the hydraulic rod. One end of the sound pressure sensor is fixedly mounted on the outside of the output shaft of the auxiliary asynchronous motor. The small end of the conical cover is fixedly mounted on the outside of the sound pressure sensor. The resonant cavity formed by the conical cover can amplify the discharge sound wave. The sound pressure sensor detects changes in sound pressure to achieve directional detection. When the cabinet discharges, the direction of the discharge point can be flexibly located by rotating the resonant cavity.

[0013] In a further embodiment, the detection mechanism includes an auxiliary asynchronous motor. The auxiliary asynchronous motor is fixedly mounted on the piston end of the hydraulic rod, and an infrared thermal imager is fixedly mounted on the outside of the output shaft of the auxiliary asynchronous motor. The local temperature rise generated by the discharge is captured by the infrared thermal imager, enabling a wide-area scan for alarm purposes.

[0014] In a further embodiment, the detection mechanism includes an auxiliary asynchronous motor. The auxiliary asynchronous motor is fixedly mounted on the piston end of the hydraulic rod. One end of the output shaft of the auxiliary asynchronous motor is fixedly mounted on the outside. When it discharges, it generates ultraviolet light, such as corona discharge. The scanning system of the ultraviolet imager covers the detection area through mechanical movement. After the ultraviolet image is processed by an algorithm, a discharge intensity distribution map is generated. A buckle is fixedly mounted on the outer wall of the ultraviolet imager. A U-shaped strip is attached to the outer wall of the other end of the ultraviolet imager. A slot is opened on the U-shaped strip. The buckle is engaged in the slot. A filter is fixedly mounted inside the center of the U-shaped strip. The geometric centers of the filter and the ultraviolet imager are coaxial. The filter can shield visible light interference and is easy to disassemble and assemble.

[0015] In a further embodiment, the horizontal linear module includes a horizontal frame. The horizontal frame is fixedly installed on the top side wall of the cabinet door. A horizontal asynchronous motor is fixedly installed on the outer wall of the horizontal frame. A horizontal threaded rod is fixedly installed at the output end of the horizontal asynchronous motor. Both ends of the horizontal threaded rod are rotatably installed inside the horizontal frame through bearing components. A horizontal moving block is threadedly engaged on the horizontal threaded rod. A horizontal slide rail is fixedly installed on the outer wall of the horizontal frame. One side of the outer wall of the horizontal moving block is fixedly connected to the sliding component of the horizontal slide rail. The other side of the outer wall of the horizontal moving block is fixedly connected to the top outer wall of the vertical frame.

[0016] In a further embodiment, the vertical linear module includes a vertical asynchronous motor. The vertical asynchronous motor is fixedly installed on the side of the vertical frame away from the cabinet door. A vertical threaded rod is fixedly installed at the output end of the vertical asynchronous motor. Both ends of the vertical threaded rod are rotatably installed inside the vertical frame via bearing components. A vertical moving block is threadedly engaged on the vertical threaded rod. A vertical slide rail is fixedly installed on the outer wall of the vertical frame. One side of the vertical moving block is fixedly installed on the outer wall of the sliding component inside the vertical slide rail, and the other side of the vertical moving block is fixedly connected to the outer wall of the main asynchronous motor.

[0017] In a further embodiment, the cabinet door is also equipped with an energy-saving component, which includes a square plate. The square plate is snapped into the inside of the cabinet door. An optical time-domain reflectometer is fixedly installed on the side of the square plate closest to the main asynchronous motor. An optical fiber sensor is fixedly installed on the optical time-domain reflectometer. A handle is fixedly installed at the center of the side of the square plate away from the main asynchronous motor. Multiple sets of the energy-saving component are arranged in a linear array with equal spacing. When the temperature or stress changes generated during discharge, the refractive index of the optical fiber will change. The optical time-domain reflectometer emits light pulses into the optical fiber sensor and receives the reflected light signal. By analyzing parameters such as the time delay and intensity change of the reflected light, the change position of the physical quantity on the optical fiber sensor is located, thereby performing a preliminary location of the discharge position. Only then will the detection component be activated to locate the specific discharge position, avoiding the detection component from running for a long time and blindly locating the discharge position.

[0018] In a further embodiment, an auxiliary component is provided outside the main asynchronous motor. The auxiliary component includes a cooling motor. The cooling motor is fixedly installed on the outer wall of the cross plate away from the main asynchronous motor. A fan is fixedly installed at the output end of the cooling motor. A rectangular plate is fixedly installed on the outer wall of the bottom end of the cabinet door. A sliding groove is opened on the rectangular plate. A wheel frame is fixedly installed at the bottom of the vertical frame. A roller is rotatably installed inside the wheel frame. The roller rolls and fits into the sliding groove, making the movement of the vertical frame more stable.

[0019] In a further embodiment, a protective component is provided on the cross plate. The protective component includes a side plate. A side plate is fixedly installed at the end of the cross plate away from the pivot. A pressure sensor is fixedly installed on the side plate. There are four side plates, and multiple pressure sensors are provided on each side plate to avoid motion interference.

[0020] Compared with the prior art, the present invention provides a switchgear discharge fault detection device, which has the following beneficial effects:

[0021] 1. This switchgear discharge fault detection device, in order to better detect discharge faults and locate specific discharge locations, is equipped with detection components. These components, along with horizontal and vertical linear modules, enable the main asynchronous motor to move along two axes. When the main asynchronous motor is started, the rotating shaft drives the cross plate to rotate vertically. Multiple sets of hydraulic rods extend to the corresponding detection mechanisms to perform various detection methods, improving accuracy and preventing the discharge phenomenon from going undetected due to the failure of a single detection method, thus avoiding more serious consequences and losses. This allows for better detection of discharge faults and location of specific discharge locations. Furthermore, the detection components are integrated into the cabinet door, reducing the encroachment on the internal space of the cabinet and facilitating disassembly and maintenance.

[0022] 2. To improve energy efficiency during detection, this switchgear discharge fault detection device incorporates energy-saving components. Before the detection component operates, it works in conjunction with an optical time-domain reflectometer and fiber optic sensor on the square plate to monitor the status of internal components in real time. When a discharge occurs, the device performs a preliminary location of the discharge point before activating the detection component to pinpoint the exact location. This avoids prolonged operation of the detection component and blind location of the discharge point, thus improving energy efficiency. The device also features a handle for easy handling of the square plate.

[0023] 3. In order to improve the operation of the detection components and enhance the detection effect, the switchgear discharge fault detection device is equipped with auxiliary components. When the cooling motor is started, the fan rotates to cool the detection mechanism, avoiding misjudgment caused by the heat generated by the detection mechanism itself. When the vertical frame moves, it drives the wheel frame to move synchronously, so that the rollers roll synchronously inside the grooves on the rectangular plate, thereby supporting and guiding the vertical frame, making the movement of the detection components more stable, and thus enabling the detection components to operate better and achieve better detection results.

[0024] 4. In order to better protect the detection mechanism, the discharge fault detection device of this switchgear is equipped with a protective component. When the piston end of the hydraulic rod retracts and the corresponding specific detection mechanism is pulled back, it will be shielded and protected by the side plate. At the same time, when the side plate comes into contact with the loose and displaced structure inside the cabinet, it will squeeze the pressure sensor. The pressure sensor will then transmit the information back to the controller, causing the main asynchronous motor to stop and notifying the operator to carry out maintenance. This will prevent the detection mechanism from being hit and thus better protect the detection mechanism. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 This is a schematic diagram of the overall structure of the present invention from another perspective;

[0027] Figure 3 For the present invention Figure 2 Enlarged structural diagram of region A in the middle;

[0028] Figure 4 For the present invention Figure 2 Enlarged structural diagram of region B in the middle;

[0029] Figure 5 For the present invention Figure 2 Enlarged structural diagram of region C in the middle;

[0030] Figure 6 This is a schematic diagram of the overall structure of the present invention from another perspective;

[0031] Figure 7 This is a schematic diagram of the overall structure of the present invention from another perspective;

[0032] Figure 8 For the present invention Figure 7 A magnified schematic diagram of the D region.

[0033] In the diagram: 1. Cabinet; 11. Arc-shaped cover; 12. Bottom groove; 2. Cabinet door; 3. Detection assembly; 31. Horizontal linear module; 311. Horizontal frame; 312. Horizontal asynchronous motor; 313. Horizontal threaded rod; 314. Horizontal moving block; 315. Horizontal slide rail; 32. Vertical frame; 33. Vertical linear module; 331. Vertical asynchronous motor; 332. Vertical threaded rod; 333. Vertical moving block; 334. Vertical slide rail; 34. Main asynchronous motor; 35. Rotating shaft; 36. Cross plate; 37. Hydraulic rod; 38. Detection mechanism; 381. Temperature. Sensors; 382. Auxiliary asynchronous motor; 383. Sound pressure sensor; 384. Conical cover; 385. Infrared thermal imager; 386. Ultraviolet imager; 387. Buckle; 388. U-shaped strip; 389. Slot; 3810. Filter; 4. Energy-saving component; 41. Square plate; 42. Optical time domain reflectometer; 43. Fiber optic sensor; 44. Handle; 5. Auxiliary component; 51. Cooling motor; 52. Fan; 53. Rectangular plate; 54. Slide rail; 55. Wheel frame; 56. Roller; 6. Protective component; 61. Side plate; 62. Pressure sensor. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] In this application, the term "above" indicates the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. It is primarily used to better describe this application and its embodiments, and is not intended to limit the indicated device, element, or component to having a specific orientation, or to construct and operate in a specific orientation. Furthermore, the term "above" may also be used in certain circumstances to indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application according to the specific circumstances.

[0036] Please see Figures 1-8 The present invention provides a technical solution: a switch cabinet discharge fault detection device, including a cabinet 1, an arc-shaped cover 11 fixedly installed on the outer wall of the bottom end of the cabinet 1, the arc-shaped cover 11 being connected to the interior of the cabinet 1 for heat dissipation, a bottom groove 12 being provided at the bottom of the cabinet 1 to prevent components from getting damp, a cabinet door 2 being hinged to the front end of the cabinet 1, and electronic components being provided inside the cabinet 1, including switches, controllers and lithium battery modules.

[0037] In one embodiment of the present invention, a detection component 3 is provided on the cabinet door 2. The detection component 3 is integrated on the cabinet door 2, which can reduce the encroachment on the internal space of the cabinet 1 and facilitate disassembly and maintenance. The detection component 3 includes a horizontal linear module 31. The horizontal linear module 31 is provided at the top of the cabinet door 2. The horizontal linear module 31 includes a crossbeam 311. The crossbeam 311 is fixedly installed on the top side wall of the cabinet door 2. A horizontal asynchronous motor 312 is fixedly installed on the outer wall of the crossbeam 311. A horizontal threaded rod 313 is fixedly installed at the output end of the horizontal asynchronous motor 312. The two ends of the horizontal threaded rod 313 are rotatably installed inside the crossbeam 311 through bearing components. A horizontal moving block 314 is threadedly engaged on the horizontal threaded rod 313. A horizontal slide rail 315 is fixedly installed on the outer wall of the crossbeam 311. The sliding block 314 is fixedly connected to the sliding member of the horizontal slide rail 315 on one side of its outer wall. The other side of the horizontal sliding block 314 is fixedly connected to the top outer wall of the vertical frame 32. A vertical linear module 33 is provided on the vertical frame 32. Further, the vertical linear module 33 includes a vertical asynchronous motor 331. The vertical asynchronous motor 331 is fixedly installed on the side of the vertical frame 32 away from the cabinet door 2. A vertical threaded rod 332 is fixedly installed at the output end of the vertical asynchronous motor 331. The two ends of the vertical threaded rod 332 are rotatably installed inside the vertical frame 32 through bearing components. A vertical moving block 333 is threadedly engaged on the vertical threaded rod 332. A vertical slide rail 334 is fixedly installed on the outer wall of the vertical frame 32. The sliding member inside the vertical slide rail 334 is fixedly installed on one side of the vertical moving block 333. The wall, the vertical moving block 333 is fixedly connected to the outer wall of the main asynchronous motor 34 on the other side. One end of the rotating shaft 35 is fixedly installed at the output end of the main asynchronous motor 34, and the other end of the rotating shaft 35 is fixedly installed inside the center of the cross plate 36. A hydraulic rod 37 is fixedly installed on the inner wall of the cross plate 36. The piston end of the hydraulic rod 37 is provided with a detection mechanism 38 for detecting the discharge phenomenon of the components inside the cabinet 1. There are four hydraulic rods 37. Further, the detection mechanism 38 includes a temperature sensor 381. One of the hydraulic rods 37 has a temperature sensor 381 fixedly installed on the piston end. So when the temperature of the discharge area rises, the temperature sensor 381 monitors the temperature change in real time and locates the hot spot. Further, there are other detection methods. The detection mechanism 38 includes auxiliary... The unit includes a stepper motor 382, ​​with an auxiliary asynchronous motor 382 fixedly mounted on the piston end of another hydraulic rod 37. Three auxiliary asynchronous motors 382 are provided. One of these auxiliary asynchronous motors 382 has a sound pressure sensor 383 fixedly mounted on one end of its output shaft. A conical cover 384 is fixedly mounted on the small end of the sound pressure sensor 383. The resonant cavity formed by the conical cover 384 amplifies the discharge sound waves. The sound pressure sensor 383 detects changes in sound pressure, enabling directional detection. When there is a discharge inside the cabinet 1, the location of the discharge point can be flexibly determined by rotating the resonant cavity. Additionally, an infrared thermal imager 385 is fixedly mounted on the output shaft of another auxiliary asynchronous motor 382. The localized temperature rise generated by the discharge is captured by the infrared thermal imager 385, enabling a wide-area scan for alarm activation.Another auxiliary asynchronous motor 382 has an ultraviolet imager 386 externally mounted on its output shaft. When it discharges, it generates ultraviolet light, such as in the case of corona discharge. The scanning system of the ultraviolet imager 386 covers the detection area through mechanical movement. After processing by an algorithm, the ultraviolet image generates a discharge intensity distribution map. A buckle 387 is fixedly mounted on the outer wall of the ultraviolet imager 386. A U-shaped strip 388 is attached to the outer wall of the other end of the ultraviolet imager 386. A slot 389 is formed on the U-shaped strip 388, and the buckle 387 engages inside the slot 389. A filter 3810 is fixedly mounted inside the center of the U-shaped strip 388. The filter 3810 and the ultraviolet imager 386 are coaxial in geometry. The filter 3810, in conjunction with the ultraviolet imager 386, can shield visible light interference and facilitates disassembly and assembly.

[0038] In this embodiment, the transverse asynchronous motor 312 in the transverse linear module 31 starts operating, and its output shaft drives the transverse threaded rod 313 to rotate. Since the transverse threaded rod 313 and the transverse moving block 314 are threadedly engaged, the transverse moving block 314 moves along the axial direction of the transverse threaded rod 313 during rotation. At the same time, one outer wall of the transverse moving block 314 is fixedly connected to the sliding member of the transverse slide rail 315. The transverse slide rail 315 plays a guiding and stabilizing role, ensuring that the transverse moving block 314 can only move along the set transverse direction, thereby driving the vertical frame 32 to achieve transverse displacement; when vertical movement is required... When the vertical linear module 33 starts, the vertical asynchronous motor 331 of the vertical linear module 33 drives the vertical threaded rod 332 to rotate. Also based on the threaded transmission principle, the vertical moving block 333 moves up and down on the vertical threaded rod 332. One side of the vertical moving block 333 is fixedly installed on the outer wall of the sliding component inside the vertical slide rail 334. The vertical slide rail 334 ensures the stability and accuracy of the movement of the vertical moving block 333, ultimately enabling the main asynchronous motor 34 to achieve vertical displacement. Through the coordinated work of the horizontal linear module 31 and the vertical linear module 33, the main asynchronous motor 34 can move in a dual-axis manner in the plane, thereby reaching different parts inside the cabinet 1. Detection location; After the main asynchronous motor 34 starts, its output shaft 35 begins to rotate, which in turn drives the cross plate 36 fixed to the other end of the shaft 35 to rotate vertically. The hydraulic rod 37 fixedly installed on the inner wall of the cross plate 36 controls the piston end to extend according to the detection requirements, sending the detection mechanism 38 connected to the piston end into the cabinet 1 for detection. The detection mechanism 38 contains a variety of detection elements, forming a diversified detection system. The temperature sensor 381 monitors the internal temperature of the cabinet 1 in real time. When a discharge occurs, the temperature of the discharge area will rise rapidly. The temperature sensor 381 can sensitively capture the temperature change and transmit the temperature data to the PLC in real time. The PLC controller analyzes and judges based on the preset temperature threshold. Once the temperature exceeds the normal range, it can preliminarily judge that there may be a discharge fault in the area and locate the location. The sound pressure sensor 383 can rotate horizontally under the drive of the auxiliary asynchronous motor 382. When a discharge occurs inside the cabinet 1, a discharge sound wave is generated. The resonance cavity formed by the conical cover 384 can effectively amplify these sound waves. The sound pressure sensor 383 detects the change in sound pressure. By rotating the direction of the resonance cavity, the detection angle of the sound pressure sensor 383 can be changed, which can flexibly locate the discharge point and transmit the detected sound pressure signal to the PLC controller for processing and analysis.Driven by the auxiliary asynchronous motor 382, ​​the infrared thermal imager 385 can perform a large-area scan of the interior of cabinet 1. The local temperature rise caused by the discharge is captured by the infrared thermal imager 385, which converts the temperature distribution into thermal image information and transmits it to the PLC controller in real time. The PLC controller analyzes and processes the thermal image, and once an abnormal temperature area is detected, it can determine that there may be a discharge fault in that area and issue an alarm. Driven by the auxiliary asynchronous motor 382, ​​the ultraviolet imager 386's scanning system covers the detection area through mechanical movement. When a discharge occurs, ultraviolet light is generated. For example, in the case of corona discharge, the ultraviolet imager 386 can capture these ultraviolet light signals. After processing by an algorithm, the ultraviolet image generates a discharge intensity distribution map. By analyzing the distribution map, the location and intensity of the discharge can be accurately determined. Simultaneously, the buckle 387 on the outer wall of the ultraviolet imager 386 engages with the slot 389 on the U-shaped strip 388. The filter 3810, fixedly installed inside the center of the U-shaped strip 388, is coaxial with the geometric center of the ultraviolet imager 386, effectively shielding visible light interference and improving the accuracy and reliability of the detection. Furthermore, this structure facilitates the disassembly and replacement of the filter 3810.

[0039] Multiple detection methods complement and verify each other, greatly improving the accuracy of discharge fault detection. Even if one detection method fails, the others can still work normally, promptly detecting discharge phenomena and avoiding missed faults due to a single detection method, which could lead to more serious consequences and losses. Furthermore, the detection component 3 is integrated into the cabinet door 2. This design not only reduces the encroachment on the internal space of the cabinet 1 and facilitates the installation and layout of other components inside the cabinet 1, but also facilitates disassembly and maintenance when the detection component 3 fails, reducing the difficulty and cost of maintenance.

[0040] In one embodiment of the present invention, an energy-saving component 4 is also provided on the cabinet door 2. The energy-saving component 4 includes a square plate 41. The square plate 41 is snapped into the inside of the cabinet door 2. An optical time domain reflectometer 42 is fixedly installed on the side of the square plate 41 near the main asynchronous motor 34. An optical fiber sensor 43 is fixedly installed on the optical time domain reflectometer 42. A handle 44 is fixedly installed at the center of the side of the square plate 41 away from the main asynchronous motor 34. The energy-saving component 4 is provided in eight groups, and the eight groups of energy-saving components 4 are linearly arrayed with equal spacing. When the temperature or stress change generated during discharge, it will cause the refractive index of the optical fiber to change. The optical time domain reflectometer 42 emits light pulses into the optical fiber sensor 43 and receives reflected light signals, such as Rayleigh scattering and Fresnel reflection. By analyzing parameters such as the time delay and intensity change of the reflected light, the position of the change of physical quantity on the optical fiber sensor 43 is located, thereby performing preliminary positioning of the discharge position. Then the detection component 3 will be activated to locate the specific discharge position, avoiding the detection component 3 from running for a long time and blindly locating the discharge position.

[0041] In this embodiment, before the detection component 3 officially starts operating, the energy-saving component 4 is put into operation first. The optical time-domain reflectometer 42 emits light pulses into the fiber optic sensor 43 and receives reflected light signals, including Rayleigh scattering and Fresnel reflection. When the components inside the cabinet 1 discharge, temperature or stress changes occur. These changes cause changes in the refractive index of the fiber optic cable. By analyzing parameters such as the time delay and intensity change of the reflected light, the optical time-domain reflectometer 42 can calculate the location of the physical quantity change on the fiber optic sensor 43, thereby achieving preliminary positioning of the discharge location. The PLC controller receives... After receiving the preliminary positioning information from the optical time domain reflectometer 42, the data is analyzed and judged. Only when the discharge phenomenon is confirmed and the discharge position is initially located will a command be issued to start the detection component 3 to perform specific discharge position positioning work. This avoids the detection component 3 from being in operation for a long time and from blindly positioning the discharge position without clear discharge signs, effectively reducing the energy consumption of the equipment and improving energy utilization efficiency. The handle 44 on the square plate 41 makes it easy for operators to pick up and put down the square plate 41, which facilitates the installation, debugging and maintenance of the energy-saving component 4.

[0042] In one embodiment of the present invention, an auxiliary component 5 is provided outside the main asynchronous motor 34. The auxiliary component 5 includes a heat dissipation motor 51. The heat dissipation motor 51 is fixedly installed on the outer wall of the center of the cross plate 36 away from the main asynchronous motor 34. A fan 52 is fixedly installed at the output end of the heat dissipation motor 51. A rectangular plate 53 is fixedly installed on the outer wall of the bottom end of the cabinet door 2. A sliding groove 54 is provided on the rectangular plate 53. A wheel frame 55 is fixedly installed at the bottom of the vertical frame 32. A roller 56 is rotatably installed inside the wheel frame 55. The roller 56 rolls and fits against the inside of the sliding groove 54, making the movement of the vertical frame 32 more stable.

[0043] In this embodiment, during the operation of the detection component 3, the auxiliary component 5 plays a crucial protective role. The cooling motor 51 operates continuously, and its output drives the fan 52 to rotate. The generated airflow cools the detection mechanism 38. During prolonged operation, the detection mechanism 38 generates heat. If this heat cannot be dissipated in time, the temperature of the detection mechanism 38 will rise, affecting the performance of the detection element and potentially leading to misjudgments. The cooling effect of the fan 52 effectively reduces the temperature of the detection mechanism 38, ensuring it operates within its normal operating temperature range. To ensure the accuracy and reliability of the test results, when the vertical frame 32 moves under the drive of the horizontal linear module 31, it will drive the wheel frame 55 fixed at the bottom to move synchronously. The rollers 56 rotatably installed inside the wheel frame 55 roll synchronously inside the grooves 54 on the rectangular plate 53. The rolling cooperation between the rollers 56 and the grooves 54 provides good support and guidance for the vertical frame 32. This support and guidance structure can reduce the shaking and offset of the vertical frame 32 during movement, making the movement of the detection component 3 more stable, improving the positioning accuracy of the detection component 3 during movement, and thus ensuring the stability and reliability of the test results.

[0044] In one embodiment of the present invention, a protective component 6 is further provided on the cross plate 36. The protective component 6 includes a side plate 61. The side plate 61 is fixedly installed at the end of the cross plate 36 away from the rotating shaft 35. A pressure sensor 62 is fixedly installed on the side plate 61. There are four side plates 61, and four pressure sensors 62 are provided on a single side plate 61 to avoid motion interference.

[0045] In this embodiment, after the detection work is completed, the piston end of the hydraulic rod 37 retracts, retracting the corresponding detection mechanism 38. At this time, the side plate 61 fixedly installed on the cross plate 36 will shield and protect the retracted detection mechanism 38, preventing damage such as collisions or scratches from external objects when the detection mechanism 38 is not in operation. During equipment operation, if the internal structure of the cabinet 1 becomes loose or shifted, when the loosened or shifted structure comes into contact with the side plate 61, it will squeeze the pressure sensor 62 fixedly installed on the side plate 61. The pressure sensor 62 can sense the pressure change in real time and convert the pressure signal into an electrical signal and transmit it to the PL. Upon receiving an abnormal signal from pressure sensor 62, the PLC controller immediately issues a command to stop the main asynchronous motor 34, preventing the detection mechanism 38 from colliding with the loosened or displaced structure during operation and causing more serious damage. Simultaneously, the PLC controller will notify the operator via an alarm device to perform maintenance, promptly eliminating potential faults and ensuring the safe and stable operation of the equipment. Four pressure sensors 62 are installed on each side plate 61, and this layout design allows for comprehensive sensing of pressure changes from different directions, effectively avoiding motion interference and improving the reliability and effectiveness of the protection component 6.

[0046] All electrical components mentioned in this application are electrically connected to the PLC controller and 220V AC mains power. The PLC controller is a conventional, known device capable of controlling the horizontal asynchronous motor 312, vertical asynchronous motor 331, main asynchronous motor 34, hydraulic rod 37, temperature sensor 381, auxiliary asynchronous motor 382, ​​sound pressure sensor 383, infrared thermal imager 385, ultraviolet imager 386, optical time-domain reflectometer 42, fiber optic sensor 43, cooling motor 51, and pressure sensor 62. All standard parts used in this application can be purchased commercially, and the specific connection methods for each part employ conventional methods such as riveting and welding, which are mature technologies in the prior art. The components are connected in sections, and all standard parts are conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art. It should be noted that the above electrical components are all prior art products. Those skilled in the art should select, install and complete the circuit debugging work according to the needs of use to ensure that all electrical components can work normally. The components are all general standard parts or components known to those skilled in the art. Their structure and principle can be known by those skilled in the art through technical manuals or conventional experimental methods. No specific restrictions are made here. The supporting structures of the hydraulic drive structure, such as hydraulic tanks and hydraulic pumps, appearing in this application are existing equipment and will not be described in detail here.

[0047] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A switchgear discharge fault detection device, comprising a cabinet (1), wherein an arc-shaped cover (11) is fixedly installed on the outer wall of the bottom end of the cabinet (1), a bottom groove (12) is provided at the bottom of the cabinet (1), a cabinet door (2) is hinged to the front end of the cabinet (1), and electronic components are provided inside the cabinet (1), characterized in that: The cabinet door (2) is provided with a detection component (3), which includes: A horizontal straight module (31) is provided at the top of the cabinet door (2). The top of the vertical frame (32) is fixedly connected to the moving part of the horizontal straight module (31). A vertical straight module (33) is provided on the vertical frame (32). The main asynchronous motor (34) is fixedly installed on the moving part of the vertical linear module (33). One end of the rotating shaft (35) is fixedly installed at the output end of the main asynchronous motor (34), and the other end of the rotating shaft (35) is fixedly installed inside the center of the cross plate (36). Hydraulic rod (37), the hydraulic rod (37) is fixedly installed on the inner wall of the cross plate (36), the piston end of the hydraulic rod (37) is provided with a detection mechanism (38) for detecting the discharge phenomenon of the internal components of the cabinet (1), the detection mechanism (38) includes a temperature sensor (381), the piston end of the hydraulic rod (37) is fixedly installed with a temperature sensor (381); The horizontal linear module (31) includes a horizontal frame (311). The horizontal frame (311) is fixedly installed on the top side wall of the cabinet door (2). A horizontal asynchronous motor (312) is fixedly installed on the outer wall of the horizontal frame (311). A horizontal threaded rod (313) is fixedly installed at the output end of the horizontal asynchronous motor (312). The two ends of the horizontal threaded rod (313) are rotatably installed inside the horizontal frame (311) through bearing components. A horizontal moving block (314) is threaded onto the horizontal threaded rod (313). A horizontal slide rail (315) is fixedly installed on the outer wall of the horizontal frame (311). One side of the outer wall of the horizontal moving block (314) is fixedly connected to the sliding component of the horizontal slide rail (315). The other side of the outer wall of the horizontal moving block (314) is fixedly connected to a vertical frame (…). 32) Top outer wall, the vertical linear module (33) includes a vertical asynchronous motor (331), the vertical frame (32) is fixedly installed on the side away from the cabinet door (2), the vertical asynchronous motor (331) is fixedly installed on the output end of the vertical asynchronous motor (331), the two ends of the vertical threaded rod (332) are rotatably installed inside the vertical frame (32) through bearing parts, the vertical threaded rod (332) is threaded with a vertical moving block (333), the vertical frame (32) is fixedly installed on the outer wall of the vertical frame (32), one side of the vertical moving block (333) is fixedly installed on the outer wall of the sliding part inside the vertical slide rail (334), and the other side of the vertical moving block (333) is fixedly connected to the outer wall of the main asynchronous motor (34).

2. The switchgear discharge fault detection device according to claim 1, characterized in that: The detection mechanism (38) includes an auxiliary asynchronous motor (382). The piston end of the hydraulic rod (37) is fixedly mounted with the auxiliary asynchronous motor (382). One end of the sound pressure sensor (383) is fixedly mounted on the outside of the output shaft of the auxiliary asynchronous motor (382). The small end of the conical cover (384) is fixedly mounted on the outside of the sound pressure sensor (383).

3. The switchgear discharge fault detection device according to claim 1, characterized in that: The detection mechanism (38) includes an auxiliary asynchronous motor (382), the piston end of the hydraulic rod (37) is fixedly mounted with the auxiliary asynchronous motor (382), and an infrared thermal imager (385) is fixedly mounted on the outside of the output shaft of the auxiliary asynchronous motor (382).

4. The switchgear discharge fault detection device according to claim 1, characterized in that: The detection mechanism (38) includes an auxiliary asynchronous motor (382). The piston end of the hydraulic rod (37) is fixedly installed with the auxiliary asynchronous motor (382). One end of the ultraviolet imager (386) is fixedly installed on the outside of the output shaft of the auxiliary asynchronous motor (382). A buckle (387) is fixedly installed on the outer wall of the ultraviolet imager (386). A U-shaped strip (388) is attached to the outer wall of the other end of the ultraviolet imager (386). A slot (389) is opened on the U-shaped strip (388). The buckle (387) is engaged in the slot (389). A filter (3810) is fixedly installed in the center of the U-shaped strip (388). The geometric centers of the filter (3810) and the ultraviolet imager (386) are coaxial.

5. The switchgear discharge fault detection device according to claim 1, characterized in that: The cabinet door (2) is also provided with an energy-saving component (4). The energy-saving component (4) includes a square plate (41). The square plate (41) is snapped into the inside of the cabinet door (2). An optical time domain reflectometer (42) is fixedly installed on the side of the square plate (41) near the main asynchronous motor (34). An optical fiber sensor (43) is fixedly installed on the optical time domain reflectometer (42). A handle (44) is fixedly installed at the center of the side of the square plate (41) away from the main asynchronous motor (34). The energy-saving component (4) is provided in multiple sets, and the multiple sets of energy-saving components (4) are arranged in a linear array with equal spacing.

6. The switchgear discharge fault detection device according to claim 1, characterized in that: An auxiliary component (5) is provided outside the main asynchronous motor (34). The auxiliary component (5) includes a heat dissipation motor (51). The heat dissipation motor (51) is fixedly installed on the outer wall of the center of the cross plate (36) away from the main asynchronous motor (34). A fan (52) is fixedly installed at the output end of the heat dissipation motor (51). A rectangular plate (53) is fixedly installed on the outer wall of the bottom end of the cabinet door (2). A sliding groove (54) is provided on the rectangular plate (53). A wheel frame (55) is fixedly installed at the bottom of the vertical frame (32). A roller (56) is rotatably installed inside the wheel frame (55). The roller (56) rolls and fits against the inside of the sliding groove (54).

7. The switchgear discharge fault detection device according to claim 1, characterized in that: The cross plate (36) is provided with a protective component (6), the protective component (6) includes a side plate (61), the side plate (61) is fixedly installed at one end of the cross plate (36) away from the rotating shaft (35), a pressure sensor (62) is fixedly installed on the side plate (61), there are four side plates (61), and multiple pressure sensors (62) are provided on a single side plate (61).

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