A power distribution network operation fault detection device and method based on fixed-point protection

Abstract

The application relates to the technical field of power distribution network operation fault detection, and discloses a power distribution network operation fault detection device and method based on fixed-point protection, which comprises a device shell, a ventilation opening is formed in the side surface of the device shell, a ventilation and heat dissipation mechanism is installed on the side walls on the two sides of the inside of the device shell, a wire hole is installed on the side surface of the device shell, a lifting adjusting mechanism is installed at the bottom of the device shell, a cable guide groove is installed on the inner wall of the device shell, and an element mounting rack is installed on the inner wall of the device shell. When the hydraulic telescopic rod is shortened, the sealing transmission plate can drive the sealing baffle to move, the sealing baffle can block the ventilation opening when moving, a sliding groove is formed in the sealing transmission plate to adapt to the height change of the movable end of the hydraulic telescopic rod, the sealing baffle can block the ventilation opening when needed, and the electrical elements in the device shell can be prevented from being affected by bad weather.

Description

Technical Field

[0001] This invention relates to the field of power distribution network operation fault detection technology, specifically to a power distribution network operation fault detection device and method based on fixed-point protection. Background Technology

[0002] Distribution network operation fault detection devices are core equipment for ensuring the reliability of power systems. They significantly improve operation and maintenance efficiency through real-time monitoring, intelligent analysis, and rapid fault location.

[0003] Chinese patent CN114364173B discloses a big data fault detection and location device for power distribution networks, including a box body and a box cover hinged to the box body. A load-bearing main shaft is provided inside the box cover, and a flip main board is provided on the load-bearing main shaft. Flip side plates are provided at both ends of one side of the flip main board. A connector is provided between the load-bearing main shaft and the box body. When the box cover is opened, the connector drives the load-bearing main shaft to rotate the flip main board.

[0004] In the aforementioned patents and prior art, when the power distribution network fault detection equipment is used in the field, it needs to overcome various working conditions. Moreover, when working in the field, there are not only expected working conditions, but also unexpected working conditions. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a distribution network operation fault detection device and method based on fixed-point protection.

[0006] A power distribution network operation fault detection device based on fixed-point protection includes a device housing, a ventilation opening on the side of the device housing, ventilation and heat dissipation mechanisms installed on the inner side walls of the device housing, wire holes installed on the side of the device housing, a lifting and adjusting mechanism installed at the bottom of the device housing, a cable guide groove installed on the inner wall of the device housing, a component mounting bracket installed on the inner wall of the device housing, and electrical components installed on the outside of the component mounting bracket.

[0007] The cable guide groove divides the component mounting bracket into multiple layers, and the interior of the device housing is connected to the outside through ventilation openings on both sides;

[0008] The wire hole guides external wires into the device housing, the cable guide groove guides wires inside the device housing, the ventilation and heat dissipation mechanism exhausts air from the inside of the device housing, the ventilation and heat dissipation mechanism seals the vents on the side wall of the device housing, the device housing contacts the foundation via a lifting and adjusting mechanism, and the lifting and adjusting mechanism adjusts the height of the device housing.

[0009] Preferably, the ventilation and heat dissipation mechanism includes a fixed mounting bracket and a telescopic rod slide. The fixed mounting bracket is fixedly installed on the inner side wall of the device housing, and the telescopic rod slide is fixedly installed on the top inside the device housing. An upper and lower rotating connecting rod is connected to the outside of the fixed mounting bracket, and an upper mounting bracket is connected to the outside of the upper and lower rotating connecting rod. A heat exchange fan is installed inside the upper mounting bracket. A hydraulic telescopic rod is slidably installed inside the telescopic rod slide. A sealing transmission plate is connected to the movable end of the hydraulic telescopic rod, and a sealing baffle is connected to the outside of the sealing transmission plate.

[0010] Preferably, the fixed mounting bracket and the upper mounting bracket are rotatably connected by multiple vertical rotating connecting rods, and the heat exchange fan is rotatably mounted on the inner wall of the device housing via the fixed mounting bracket;

[0011] When the upper mounting bracket contacts the fixed mounting bracket, the heat exchange fan and the vent are in the same position. The heat exchange fan can drive the air circulation inside the device housing. When the upper mounting bracket rotates on the fixed mounting bracket via the up and down rotating connecting rod, it can drive the heat exchange fan to separate from the vent.

[0012] Preferably, the fixed end of the hydraulic telescopic rod is slidably installed inside the telescopic rod groove, and the movable end of the hydraulic telescopic rod is connected to the upper mounting frame and the sealing transmission plate respectively, and the movable end of the hydraulic telescopic rod is slidably connected to the sealing transmission plate;

[0013] When the hydraulic telescopic rod extends or retracts, it can drive the upper mounting frame and the sealing transmission plate to move. When the sealing transmission plate moves, it can drive the sealing baffle to move synchronously. When the sealing baffle moves, it can block the ventilation opening.

[0014] Preferably, when the hydraulic telescopic rod moves the upper mounting frame, it can cause the upper and lower rotating connecting rods to rotate. When the upper and lower rotating connecting rods rotate, the height of the upper mounting frame can change. When the height of the upper mounting frame changes, the hydraulic telescopic rod can slide along the telescopic rod groove to adapt to the height change of the upper mounting frame. The sealed transmission plate has a groove inside to adapt to the height change of the movable end of the hydraulic telescopic rod.

[0015] Preferably, the lifting adjustment mechanism includes a lifting support base, which is slidably installed inside the device housing. A locking block sliding groove is provided inside the lifting support base, and a locking block limiting spring is installed inside the locking block sliding groove. The movable end of the locking block limiting spring is connected to a lifting limiting locking block. A lifting mounting groove is provided inside the lifting support base, and a device lifting rod is installed inside the lifting mounting groove. A baffle mounting base is installed at the bottom inside the device housing. Limiting clamping baffles are rotatably connected to both sides of the baffle mounting base. A baffle connecting screw is installed outside the limiting clamping baffle, and a baffle adjusting nut is installed outside the baffle connecting screw.

[0016] Preferably, the sliding groove of the locking block is opened on one side of the lifting support base, the lifting limit locking block is slidably installed inside the sliding groove of the locking block by the locking block limiting spring, the outside of the lifting limit locking block has a stepped structure, and the lifting support base is engaged with the limiting clamping baffle through the outside of the lifting limit locking block;

[0017] The outside of the lifting support base is slidably connected to the limiting clamping baffle, and the engagement of the lifting limiting block with the limiting clamping baffle can limit the height of the lifting support base.

[0018] Preferably, the limiting clamping baffles at both ends of the baffle mounting base are connected by baffle connecting screws, the baffle adjusting nut is connected to the external thread of the baffle connecting screw, and there is a certain amount of play at the engagement point between the limiting clamping baffle and the lifting limiting block;

[0019] When the baffle adjusting nut moves outside the baffle connecting screw, it can adjust the tightness of the clamping baffle on the lifting support seat. When the device housing shakes, it can drive the lifting limit block to move into the sliding groove of the block through the limiting clamping baffle. When the lifting limit block moves into the sliding groove of the block, it can cause the device housing to move downward along the outside of the lifting support seat.

[0020] Preferably, the interior of the lifting mounting groove is provided with a protrusion on the outside of the bottom of the device housing, the fixed end of the device lifting rod is fixedly connected to the interior of the lifting mounting groove, the driving end of the device lifting rod can contact the device housing when it is extended, and the device lifting rod can drive the device housing to move upward when it is extended.

[0021] A positioning method for machining a brake assembly uses the aforementioned power distribution network operation fault detection device based on fixed-point protection.

[0022] Compared with the prior art, the present invention provides a distribution network operation fault detection device and method based on fixed-point protection, which has the following beneficial effects:

[0023] 1. This type of power distribution network operation fault detection device based on fixed-point protection can also drive the sealing baffle to move through the sealing transmission plate when the hydraulic telescopic rod is shortened. When the sealing baffle moves, it can block the ventilation opening. The sealing transmission plate has a sliding groove inside to adapt to the height change of the moving end of the hydraulic telescopic rod. By blocking the ventilation opening when necessary through the sealing baffle, it can prevent the electrical components inside the device shell from being affected by severe weather.

[0024] 2. This type of power distribution network operation fault detection device based on fixed-point protection, when the hydraulic telescopic rod is extended to its maximum length, the heat exchange fan is in contact with the ventilation port. The heat exchange fan drives the air flow inside the device shell to actively dissipate heat from the inside of the device shell, thereby effectively reducing the temperature inside the device shell and preventing the electrical components inside the device shell from having their service life affected by high operating temperature.

[0025] 3. This type of distribution network operation fault detection device based on fixed-point protection will cause the device casing to sway outside the lifting support seat when encountering sudden weather such as strong winds. When the device casing sways outside the lifting support seat, it can drive the limit clamping baffle to sway synchronously. The swaying of the limit clamping baffle can drive the lifting limit block to move into the sliding groove of the block. When the lifting limit block moves into the sliding groove of the block, it can compress the limit spring of the block. When the lifting limit block moves into the sliding groove of the block, it can cause the device casing to move downward along the outside of the lifting support seat, thereby reducing the height of the device casing and preventing the device from being damaged by strong winds. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural diagram of a power distribution network operation fault detection device based on fixed-point protection according to the present invention. Figure 1 ;

[0027] Figure 2 This is a three-dimensional structural diagram of a power distribution network operation fault detection device based on fixed-point protection according to the present invention. Figure 2 ;

[0028] Figure 3 This is a schematic diagram of the internal structure of a power distribution network operation fault detection device based on fixed-point protection according to the present invention. Figure 1 ;

[0029] Figure 4 This is a schematic diagram of the internal structure of a power distribution network operation fault detection device based on fixed-point protection according to the present invention. Figure 2 ;

[0030] Figure 5 This is a three-dimensional structural diagram of the ventilation and heat dissipation mechanism of a power distribution network operation fault detection device based on fixed-point protection according to the present invention. Figure 1 ;

[0031] Figure 6 This is a three-dimensional structural diagram of the ventilation and heat dissipation mechanism of a power distribution network operation fault detection device based on fixed-point protection according to the present invention. Figure 2 ;

[0032] Figure 7 This is a three-dimensional structural diagram of the ventilation and heat dissipation mechanism of a power distribution network operation fault detection device based on fixed-point protection according to the present invention. Figure 3 ;

[0033] Figure 8 This is a three-dimensional structural diagram of the ventilation and heat dissipation mechanism of a power distribution network operation fault detection device based on fixed-point protection according to the present invention. Figure 4 ;

[0034] Figure 9 This is a three-dimensional structural diagram of the lifting and adjusting mechanism of a distribution network operation fault detection device based on fixed-point protection according to the present invention. Figure 1 ;

[0035] Figure 10 This is a three-dimensional structural diagram of the lifting and adjusting mechanism of a power distribution network operation fault detection device based on fixed-point protection according to the present invention. Figure 2 ;

[0036] Figure 11 This is a three-dimensional structural diagram of the lifting and adjusting mechanism of a power distribution network operation fault detection device based on fixed-point protection according to the present invention. Figure 3 ;

[0037] Figure 12 This is a schematic diagram of the internal structure of the lifting and adjusting mechanism of a power distribution network operation fault detection device based on fixed-point protection according to the present invention;

[0038] In the diagram: 1. Device housing; 2. Ventilation opening; 3. Ventilation and heat dissipation mechanism; 31. Fixed mounting bracket; 32. Upward and downward rotating connecting rod; 33. Upper mounting bracket; 34. Heat exchange fan; 35. Telescopic rod slide groove; 36. Hydraulic telescopic rod; 37. Sealing baffle; 38. Sealing transmission plate; 4. Wire hole; 5. Lifting and adjusting mechanism; 51. Device lifting rod; 52. Lifting support seat; 53. Locking block sliding groove; 54. Locking block limit spring; 55. Lifting limit locking block; 56. Lifting mounting groove; 57. Baffle mounting seat; 58. Limiting clamping baffle; 59. Baffle connecting screw; 510. Baffle adjusting nut; 6. Cable guide groove; 7. Component mounting bracket; 8. Electrical components. Detailed Implementation

[0039] 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.

[0040] As described in the background section, there are shortcomings in the existing technology. In order to solve the above-mentioned technical problems, this application proposes a distribution network operation fault detection device and method based on fixed-point protection.

[0041] Example 1:

[0042] Please see Figure 1 - Figure 12 A fault detection device for power distribution network operation based on fixed-point protection includes a device housing 1, a ventilation opening 2 on the side of the device housing 1, a ventilation and heat dissipation mechanism 3 installed on the side walls of the inner two sides of the device housing 1, a wire hole 4 installed on the side of the device housing 1, a lifting and adjusting mechanism 5 installed at the bottom of the device housing 1, a cable guide groove 6 installed on the inner wall of the device housing 1, a component mounting bracket 7 installed on the inner wall of the device housing 1, and electrical components 8 installed on the outside of the component mounting bracket 7.

[0043] The cable guide groove 6 divides the component mounting bracket 7 into multiple layers, and the interior of the device housing 1 is connected to the outside through the ventilation openings 2 on both sides;

[0044] The wire hole 4 can guide external wires into the interior of the device housing 1. The cable guide groove 6 can guide the wires inside the device housing 1. The ventilation and heat dissipation mechanism 3 can exhaust and dissipate heat inside the device housing 1. The ventilation and heat dissipation mechanism 3 can block the ventilation openings 2 on the side wall of the device housing 1. The device housing 1 is in contact with the foundation through the lifting and adjusting mechanism 5. The lifting and adjusting mechanism 5 can adjust the height of the device housing 1.

[0045] During operation, external cables can enter or exit the housing 1 through the wire hole 4. The housing 1 is connected to the outside through the vent 2. The ventilation and heat dissipation mechanism 3 can actively facilitate the airflow between the housing 1 and the outside through the vent 2. The active heat dissipation of the ventilation and heat dissipation mechanism 3 can effectively reduce the internal temperature of the housing 1, preventing the electrical components 8 inside the housing 1 from being affected by excessive operating temperature. During operation, the ventilation and heat dissipation mechanism 3 can also close the vent 2 as needed to prevent external air from entering the housing 1 and affecting the electrical components 8 inside the housing 1. During operation, the lifting and adjustment mechanism 5 can also actively adjust the height of the housing 1 to adapt to changes in the external environment. The lifting and adjustment mechanism 5 is also equipped with a linkage mechanism that passively adjusts the height of the housing 1 in case of emergencies, preventing damage to the device due to unexpected environmental changes. By adjusting the height and sealing of the housing 1 through the ventilation and heat dissipation mechanism 3 and the lifting and adjustment mechanism 5, the device can adapt to different working conditions.

[0046] Example 2:

[0047] The difference from the above embodiments is that, please refer to [link / reference needed]. Figure 1 - Figure 12 The ventilation and heat dissipation mechanism 3 includes a fixed mounting frame 31 and a telescopic rod slide 35. The fixed mounting frame 31 is fixedly installed on the inner side wall of the device housing 1. The telescopic rod slide 35 is fixedly installed on the top inside the device housing 1. The fixed mounting frame 31 is externally connected to an up-and-down rotating connecting rod 32. The up-and-down rotating connecting rod 32 is externally connected to an upper mounting frame 33. A heat exchange fan 34 is installed inside the upper mounting frame 33. A hydraulic telescopic rod 36 is slidably installed inside the telescopic rod slide 35. A sealing transmission plate 38 is connected to the movable end of the hydraulic telescopic rod 36. A sealing baffle 37 is externally connected to the sealing transmission plate 38.

[0048] The fixed mounting bracket 31 and the upper mounting bracket 33 are rotatably connected by multiple vertical rotating connecting rods 32, and the heat exchange fan 34 is rotatably mounted on the inner wall of the device housing 1 through the fixed mounting bracket 31;

[0049] When the upper mounting bracket 33 contacts the fixed mounting bracket 31, the heat exchange fan 34 and the vent 2 are in the same position. The heat exchange fan 34 can drive the air circulation inside the device housing 1. When the upper mounting bracket 33 rotates on the fixed mounting bracket 31 by rotating the connecting rod 32 up and down, it can drive the heat exchange fan 34 to separate from the vent 2.

[0050] The fixed end of the hydraulic telescopic rod 36 is slidably installed inside the telescopic rod groove 35, and the movable end of the hydraulic telescopic rod 36 is connected to the upper mounting frame 33 and the sealing transmission plate 38 respectively. The movable end of the hydraulic telescopic rod 36 is slidably connected to the sealing transmission plate 38.

[0051] When the hydraulic telescopic rod 36 extends or retracts, it can drive the upper mounting frame 33 and the sealing transmission plate 38 to move. When the sealing transmission plate 38 moves, it can drive the sealing baffle 37 to move synchronously. When the sealing baffle 37 moves, it can block the ventilation opening 2.

[0052] When the hydraulic telescopic rod 36 moves the upper mounting frame 33, it can cause the upper and lower rotating connecting rod 32 to rotate. When the upper and lower rotating connecting rod 32 rotates, the height of the upper mounting frame 33 changes. When the height of the upper mounting frame 33 changes, the hydraulic telescopic rod 36 can slide along the telescopic rod groove 35 to adapt to the height change of the upper mounting frame 33. The sealed transmission plate 38 has a groove inside to adapt to the height change of the movable end of the hydraulic telescopic rod 36.

[0053] When the internal temperature of the device housing 1 is high during operation, it is necessary to enhance the air circulation between the inside and outside of the device housing 1 to improve its heat dissipation capacity. At this time, the hydraulic telescopic rod 36 extends to its maximum length, and the heat exchange fan 34 is in contact with the vent 2. The heat exchange fan 34 drives the airflow inside the device housing 1 to actively dissipate heat from the inside of the device housing 1, thereby effectively reducing the internal temperature of the device housing 1 and preventing the electrical components 8 inside the device housing 1 from having their service life affected by high operating temperatures. When the external environment changes, such as in windy or rainy weather, it is necessary to prevent rainwater from entering the inside of the device housing 1. The hydraulic telescopic rod 36 needs to be shortened to move the upper mounting bracket 33. When the upper mounting bracket 33 moves, the upper and lower rotating connecting rod 32 can rotate. When the upper and lower rotating connecting rod 32 rotates, the height of the upper mounting bracket 33 can change. When the height of the upper mounting bracket 33 changes, the hydraulic telescopic rod 36 can slide along the telescopic rod groove 35 to adapt to the height change of the upper mounting bracket 33. When the hydraulic telescopic rod 36 is shortened, it can also drive the sealing baffle 37 to move through the sealing transmission plate 38. When the sealing baffle 37 moves, it can block the vent 2. The sealing transmission plate 38 has a groove inside to adapt to the height change of the moving end of the hydraulic telescopic rod 36. By blocking the vent 2 when necessary through the sealing baffle 37, it can prevent the electrical components 8 inside the device housing 1 from being affected by bad weather.

[0054] Example 3:

[0055] The difference from the above embodiments is that, please refer to [link / reference needed]. Figure 1 - Figure 12The lifting adjustment mechanism 5 includes a lifting support base 52, which is slidably installed inside the device housing 1. A locking block sliding groove 53 is provided inside the lifting support base 52. A locking block limiting spring 54 is installed inside the locking block sliding groove 53. The movable end of the locking block limiting spring 54 is connected to a lifting limiting locking block 55. A lifting mounting groove 56 is provided inside the lifting support base 52. A device lifting rod 51 is installed inside the lifting mounting groove 56. A baffle mounting base 57 is installed at the bottom inside the device housing 1. Both sides of the baffle mounting base 57 are rotatably connected to a limiting clamping baffle 58. A baffle connecting screw 59 is installed on the outside of the limiting clamping baffle 58. A baffle adjusting nut 510 is installed on the outside of the baffle connecting screw 59.

[0056] The sliding groove 53 of the locking block is opened on one side of the lifting support seat 52. The lifting limit locking block 55 is slidably installed inside the sliding groove 53 of the locking block through the locking block limit spring 54. The outside of the lifting limit locking block 55 is a stepped structure. The lifting support seat 52 is engaged with the limit clamping baffle 58 through the outside of the lifting limit locking block 55.

[0057] The outside of the lifting support base 52 is slidably connected to the limiting clamping baffle 58, and the engagement between the lifting limiting block 55 and the limiting clamping baffle 58 can limit the height of the lifting support base 52.

[0058] The limiting clamping baffles 58 at both ends of the baffle mounting base 57 are connected by baffle connecting screws 59. The baffle adjusting nut 510 is connected to the external thread of the baffle connecting screw 59. There is a certain amount of play at the engagement point between the limiting clamping baffle 58 and the lifting limiting block 55.

[0059] When the baffle adjusting nut 510 moves outside the baffle connecting screw 59, it can adjust the tightness of the clamping baffle 58 on the lifting support seat 52. When the device housing 1 shakes, it can drive the lifting limit block 55 to move into the block sliding groove 53 through the limit clamping baffle 58. When the lifting limit block 55 moves into the block sliding groove 53, it can cause the device housing 1 to move downward along the outside of the lifting support seat 52.

[0060] The lifting mounting groove 56 has a protrusion on the outside of the bottom of the device housing 1. The fixed end of the device lifting rod 51 is fixedly connected to the inside of the lifting mounting groove 56. When the device lifting rod 51 is extended, it can contact the device housing 1. When the device lifting rod 51 is extended, it can drive the device housing 1 to move upward.

[0061] During operation, the device can raise the height of its housing 1 by moving the lifting rod 51 upward along the outside of the lifting support 52. During operation, the tightness of the clamping baffle 58 on the lifting support 52 can be adjusted by the baffle adjusting nut 510 as the baffle connecting screw 59 moves outward. In case of strong winds or other sudden weather events, the housing 1 will shake outside the lifting support 52. This shaking of the housing 1 will cause the clamping baffle 58 to shake synchronously. The shaking of the clamping baffle 58 will cause the lifting limit block 55 to move into the sliding groove 53. When the lifting limit block 55 moves into the sliding groove 53, it compresses the limit spring 54. When the lifting limit block 55 moves into the sliding groove 53, it moves the outer shell 1 of the device downward along the outside of the lifting support 52, thereby lowering the height of the outer shell 1 and preventing damage to the device due to strong winds. When the height of the outer shell 1 rises, the limit spring 54 rebounds, driving the lifting limit block 55 to move outward of the sliding groove 53. Thus, the height of the outer shell 1 can be adjusted actively and passively during operation to adapt to different environmental changes and sudden environmental changes.

[0062] Example 4:

[0063] A positioning method for machining a brake assembly, using a power distribution network operation fault detection device based on fixed-point protection as described in Examples 1 to 3, includes the following steps:

[0064] During operation, external cables can enter the interior of the device housing 1 through the wire hole 4 or exit from the interior of the device housing 1.

[0065] The ventilation and heat dissipation mechanism 3 can actively realize the circulation of air inside and outside the device housing 1 through the ventilation port 2. The active heat dissipation of the ventilation and heat dissipation mechanism 3 can effectively reduce the internal temperature of the device housing 1 and prevent the electrical components 8 inside the device housing 1 from being affected by excessive working temperature, thus affecting their service life.

[0066] The ventilation and heat dissipation mechanism 3 can also close the ventilation opening 2 as needed to prevent external air from entering the interior of the device housing 1 and affecting the electrical components 8 inside the device housing 1.

[0067] The lifting and adjusting mechanism 5 can also actively adjust the height of the device housing 1 to adapt to changes in the external environment of the device housing 1.

[0068] The lifting and adjusting mechanism 5 is also equipped with a linkage mechanism, which passively adjusts the height of the outer shell 1 of the device in the event of an emergency, so as to prevent the device from being damaged due to unexpected environmental changes.

[0069] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A distribution network operation fault detection device based on fixed-point protection, comprising a device housing, characterized in that: The device housing has ventilation openings on its side, ventilation and heat dissipation mechanisms are installed on the inner side walls of the device housing, wire holes are installed on the side of the device housing, lifting and adjustment mechanisms are installed at the bottom of the device housing, cable guide grooves are installed on the inner wall of the device housing, component mounting brackets are installed on the inner wall of the device housing, and electrical components are installed on the outside of the component mounting brackets. The cable guide groove divides the component mounting bracket into multiple layers, and the interior of the device housing is connected to the outside through ventilation openings on both sides; The wire hole can guide external wires into the interior of the device housing, the cable guide groove can guide the wires inside the device housing, the ventilation and heat dissipation mechanism can exhaust and dissipate heat inside the device housing, the ventilation and heat dissipation mechanism can block the ventilation openings on the side wall of the device housing, the device housing is in contact with the foundation through a lifting and adjusting mechanism, and the lifting and adjusting mechanism can adjust the height of the device housing. The lifting adjustment mechanism includes a lifting support base, which is slidably installed inside the device housing. A locking block sliding groove is provided inside the lifting support base, and a locking block limiting spring is installed inside the locking block sliding groove. The movable end of the locking block limiting spring is connected to a lifting limiting locking block. A lifting mounting groove is provided inside the lifting support base, and a device lifting rod is installed inside the lifting mounting groove. A baffle mounting base is installed at the bottom inside the device housing. Limiting clamping baffles are rotatably connected to both sides of the baffle mounting base. A baffle connecting screw is installed outside the limiting clamping baffle, and a baffle adjusting nut is installed outside the baffle connecting screw.

2. The distribution network operation fault detection device based on fixed-point protection according to claim 1, characterized in that: The ventilation and heat dissipation mechanism includes a fixed mounting bracket and a telescopic rod slide. The fixed mounting bracket is fixedly installed on the inner side wall of the device housing, and the telescopic rod slide is fixedly installed on the top inside the device housing. The fixed mounting bracket is externally connected to an up-and-down rotating connecting rod, and the up-and-down rotating connecting rod is externally connected to an upper mounting bracket. A heat exchange fan is installed inside the upper mounting bracket. A hydraulic telescopic rod is slidably installed inside the telescopic rod slide. The movable end of the hydraulic telescopic rod is connected to a sealing transmission plate, and a sealing baffle is externally connected to the sealing transmission plate.

3. The distribution network operation fault detection device based on fixed-point protection according to claim 2, characterized in that: The fixed mounting bracket and the upper mounting bracket are rotatably connected by multiple vertical rotating connecting rods, and the heat exchange fan is rotatably mounted on the inner wall of the device housing through the fixed mounting bracket; When the upper mounting bracket contacts the fixed mounting bracket, the heat exchange fan and the vent are in the same position. The heat exchange fan can drive the air circulation inside the device housing. When the upper mounting bracket rotates on the fixed mounting bracket via the up and down rotating connecting rod, it can drive the heat exchange fan to separate from the vent.

4. The distribution network operation fault detection device based on fixed-point protection according to claim 3, characterized in that: The fixed end of the hydraulic telescopic rod is slidably installed inside the telescopic rod groove, and the movable end of the hydraulic telescopic rod is connected to the upper mounting frame and the sealing transmission plate respectively. The movable end of the hydraulic telescopic rod is slidably connected to the sealing transmission plate. When the hydraulic telescopic rod extends or retracts, it can drive the upper mounting frame and the sealing transmission plate to move. When the sealing transmission plate moves, it can drive the sealing baffle to move synchronously. When the sealing baffle moves, it can block the ventilation opening.

5. A distribution network operation fault detection device based on fixed-point protection according to claim 4, characterized in that: When the hydraulic telescopic rod moves the upper mounting frame, it can cause the upper and lower rotating connecting rods to rotate. When the upper and lower rotating connecting rods rotate, the height of the upper mounting frame can change. When the height of the upper mounting frame changes, the hydraulic telescopic rod can slide along the telescopic rod groove to adapt to the height change of the upper mounting frame. The sealed transmission plate has a groove inside to adapt to the height change of the movable end of the hydraulic telescopic rod.

6. A distribution network operation fault detection device based on fixed-point protection according to claim 5, characterized in that: The sliding groove of the locking block is opened on one side of the lifting support base. The lifting limit locking block is slidably installed inside the sliding groove of the locking block through the locking block limit spring. The outside of the lifting limit locking block has a stepped structure. The lifting support base is engaged with the limiting clamping baffle through the outside of the lifting limit locking block. The outside of the lifting support base is slidably connected to the limiting clamping baffle, and the engagement of the lifting limiting block with the limiting clamping baffle can limit the height of the lifting support base.

7. A distribution network operation fault detection device based on fixed-point protection according to claim 6, characterized in that: The limiting clamping baffles at both ends of the baffle mounting base are connected by baffle connecting screws. The baffle adjusting nut is connected to the external thread of the baffle connecting screw. There is a certain amount of play at the engagement point between the limiting clamping baffle and the lifting limiting block. When the baffle adjusting nut moves outside the baffle connecting screw, it can adjust the tightness of the clamping baffle on the lifting support seat. When the device housing shakes, it can drive the lifting limit block to move into the sliding groove of the block through the limiting clamping baffle. When the lifting limit block moves into the sliding groove of the block, it can cause the device housing to move downward along the outside of the lifting support seat.

8. A distribution network operation fault detection device based on fixed-point protection according to claim 7, characterized in that: The lifting mounting groove has a protrusion on the outside of the bottom of the device housing. The fixed end of the device lifting rod is fixedly connected to the inside of the lifting mounting groove. When the device lifting rod is extended, the driving end of the device lifting rod can contact the device housing. When the device lifting rod is extended, it can drive the device housing to move upward.

9. A method for detecting operational faults in a distribution network based on fixed-point protection, using a distribution network operational fault detection device based on fixed-point protection as described in any one of claims 1-8, comprising the following steps; During operation, external cables can enter or exit the device housing through the wire hole; The ventilation and heat dissipation mechanism can actively facilitate the circulation of air between the inside and outside of the device casing through the ventilation openings. The active heat dissipation of the ventilation and heat dissipation mechanism can effectively reduce the internal temperature of the device casing and prevent the electrical components inside the device casing from being affected by excessive operating temperature, thus extending their service life. The ventilation and heat dissipation mechanism can also seal the vents as needed to prevent external air from entering the device housing and affecting the electrical components inside. The lifting and adjusting mechanism can also actively adjust the height of the device housing to adapt to changes in the external environment. The lifting and adjusting mechanism is also equipped with a linkage mechanism inside, which passively adjusts the height of the device casing in the event of an emergency, preventing damage to the device due to unexpected environmental changes.

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