Power distribution partial discharge monitoring device

Abstract

The utility model relates to the technical field of power distribution safety, and discloses a power distribution partial discharge monitoring device which comprises a monitoring machine body and an electric telescopic rod, the front face of the monitoring machine body is fixedly connected with a key controller, the telescopic end of the electric telescopic rod is fixedly connected with a top plate, and a movable supporting plate is arranged above the monitoring machine body. A conductive column is fixedly connected to the inner wall of the movable supporting plate, a conductive ring is fixedly connected to the end, close to the electric telescopic rod, of the conductive column, two guide rods are fixedly connected to the front face of the movable supporting plate, and the outer surface of each guide rod is sleeved with a back-jacking spring. Through the monitoring machine body, the key controller, the electric telescopic rod, the top plate, the movable supporting plate, the conductive column, the conductive ring, the guide rod and the back-jacking spring, the conductive ring can be fastened, wound and electrically connected with an external wire serving as a ground wire, and the key controller can be operated according to the environment where equipment to be monitored is located and the characteristics of the equipment. The static electricity export period and frequency are controlled; and the working parameters of internal components of the machine body are monitored.

Description

Technical Field

[0001] The utility model relates to the technical field of power distribution safety, in particular to a power distribution partial discharge monitoring device. Background Art

[0002] Power distribution safety refers to the process of ensuring the reliability, stability and safety of power supply in the power distribution system, so as to ensure the normal operation of power equipment and lines and prevent electrical accidents. However, due to the inevitable deterioration of electrical, thermal, chemical properties and insulation formed under abnormal conditions of electrical equipment during long-term operation, the electrical insulation strength will be reduced, and partial discharge is likely to occur. In order to effectively monitor the status of power facilities, discover and deal with problems in a timely manner, and improve the safe operation level of the power system, it is often necessary to use corresponding distribution partial discharge monitoring devices to detect equipment that may cause partial discharge in the power system.

[0003] Existing power distribution partial discharge monitoring devices usually include sensors, data acquisition devices, data processors and monitoring software. However, the contact-fitting monitoring method is prone to discharge misjudgment due to the electrostatic discharge of the equipment. The lack of an intelligent electrostatic derivation structure causes the power distribution partial discharge device to easily produce discharge misjudgment due to the electrostatic discharge of the equipment, thereby affecting the monitoring results. Therefore, technical personnel in this field provide a power distribution partial discharge monitoring device to solve the problems raised in the above background technology. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides a power distribution partial discharge monitoring device, which has an intelligent static electricity derivation structure and has the advantage of preventing discharge misjudgment caused by static electricity discharge of equipment.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a power distribution partial discharge monitoring device, comprising a monitoring body and an electric telescopic rod, wherein a button controller is fixedly connected to the front of the monitoring body, a top plate is fixedly connected to the telescopic end of the electric telescopic rod, a movable support plate is arranged above the monitoring body, a conductive column is fixedly connected to the inner wall of the movable support plate, a conductive ring is fixedly connected to one end of the conductive column close to the electric telescopic rod, two guide rods are fixedly connected to the front of the movable support plate, and a return spring is sleeved on the outer surface of each guide rod.

[0008] Preferably, the outer surface of the electric telescopic rod is fixedly connected to the inner wall of the monitoring body, the outer surface of each guide rod is slidably connected to the inside of the top plate, the two ends of each return spring are respectively in contact with the back side of the top plate and the front side of the movable support plate, the two side surfaces of the monitoring body are fixedly connected with a pull shell, and the inner wall of each pull shell is fixedly connected with a pull rod.

[0009] Preferably, a handle is provided inside each of the pull shells, and the inner wall of each handle is rotatably connected to the outer surface of the pull rod.

[0010] Preferably, two groups of support blocks are fixedly connected to the back side of the monitoring body, and the inner wall of each group of support blocks is fixedly connected to two permanent magnet blocks.

[0011] Preferably, an adjusting cylinder is threadedly connected to the inner wall of the monitoring body, a monitoring probe is fixedly connected to the inner wall of the adjusting cylinder, and the monitoring body, the electric telescopic rod and the monitoring probe are all electrically connected to the button controller via a wire.

[0012] Preferably, an anti-skid sleeve is fixedly connected to the outer surface of the adjusting cylinder, and a plurality of identical anti-skid protrusions are fixedly connected to the outer surface of the anti-skid sleeve.

[0013] (III) Beneficial effects

[0014] Compared with the prior art, the utility model provides a distribution partial discharge monitoring device, which has the following beneficial effects:

[0015] The power distribution partial discharge monitoring device cooperates with each other through the monitoring body, the key controller, the electric telescopic rod, the top plate, the movable support plate, the conductive column, the conductive ring, the guide rod and the return spring. The conductive ring can be tightly wound and electrically connected with the external wire used as the ground wire. The operation key controller can control the electrostatic extraction cycle and frequency and the working parameters of the internal components of the monitoring body according to the environment and equipment characteristics of the monitored equipment. Then, in each electrostatic extraction cycle, the key controller automatically controls the electric telescopic rod to be energized and first extend, and then drives the top plate, the movable support plate and the conductive column to push against the metal position of the outer surface or the inner wall of the shell of the monitored equipment. During this period, the guide rod slides in the top plate and the compression of the return spring can prevent the conductive column from excessively pressing against the metal position of the outer surface or the inner wall of the shell of the monitored equipment, so that the static electricity on the monitored equipment is discharged outward through the conductive column, the conductive ring and the connected ground wire, which plays a role in preventing the equipment from affecting the data accuracy of the entire monitoring device due to the electrostatic discharge, and avoiding the problem that the power distribution partial discharge device is prone to discharge misjudgment due to the discharge of static electricity of the equipment and affects the monitoring result due to the lack of an intelligent electrostatic extraction structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional overall structural diagram of the power distribution partial discharge monitoring device of the utility model;

[0017] Figure 2 It is a three-dimensional structural schematic diagram of the electric telescopic rod of the utility model;

[0018] Figure 3 It is a schematic diagram of the structure of a three-dimensional side-view cutaway of the monitoring machine body of the utility model;

[0019] Figure 4 It is a three-dimensional structural schematic diagram of the handle of the utility model.

[0020] In the figure: 1. Monitoring body; 2. Button controller; 3. Electric telescopic rod; 4. Top plate; 5. Movable support plate; 6. Conductive column; 7. Conductive ring; 8. Guide rod; 9. Return spring; 10. Pull shell; 11. Pull rod; 12. Handle; 13. Support block; 14. Permanent magnet block; 15. Adjustment cylinder; 16. Monitoring probe; 17. Anti-slip sleeve; 18. Anti-slip convex column. DETAILED DESCRIPTION

[0021] In order to better understand the purpose, structure and function of the utility model, the power distribution partial discharge monitoring device of the utility model is further described in detail below with reference to the accompanying drawings.

[0022] See also Figure 1-4 The utility model: a power distribution partial discharge monitoring device, comprises a monitoring body 1 and an electric telescopic rod 3, a button controller 2 is fixedly connected to the front of the monitoring body 1, a top plate 4 is fixedly connected to the telescopic end of the electric telescopic rod 3, the outer surface of the electric telescopic rod 3 is fixedly connected to the inner wall of the monitoring body 1, a pull shell 10 is fixedly connected to both sides of the monitoring body 1, a pull rod 11 is fixedly connected to the inner wall of each pull shell 10, main electrical components are arranged inside the monitoring body 1 to realize partial discharge monitoring and signal sending, and the button controller 2 can control some parameters or functions inside the monitoring body 1 through external operation, and the pull rod 11 can provide a rotation base surface for the hand-grip structure inside the pull shell 10, thereby increasing the use flexibility of the hand-grip structure, and the pull shell 10 and the pull rod 11 can cooperate with the hand-grip structure to disassemble and carry the entire monitoring device.

[0023] A movable support plate 5 is arranged above the monitoring body 1, and a conductive column 6 is fixedly connected to the inner wall of the movable support plate 5. A handle 12 is arranged inside each pull shell 10, and the inner wall of each handle 12 is rotatably connected to the outer surface of the pull rod 11. The conductive column 6 itself has good conductive properties and is not easily oxidized. By providing the handle 12, it can rotate around the outer surface of the pull rod 11 inside the pull shell 10, thereby facilitating the disassembly, assembly and transportation of the entire monitoring device.

[0024] A conductive ring 7 is fixedly connected to one end of the conductive column 6 close to the electric telescopic rod 3, and two groups of support blocks 13 are fixedly connected to the back of the monitoring body 1. The inner wall of each group of support blocks 13 is fixedly connected to two permanent magnet blocks 14. The conductive ring 7 itself has good conductivity and is convenient to connect to the ground, so that the static electricity from the conductive column 6 can be effectively discharged. By providing the permanent magnet block 14, magnetism can be provided to the back of the support block 13. After the permanent magnet block 14 is magnetically attracted to the metal device shell structure, the support block 13 can be close to the device shell, thereby facilitating the disassembly and assembly of the entire monitoring device.

[0025] Two guide rods 8 are fixedly connected to the front of the movable support plate 5, and the outer surface of each guide rod 8 is slidably connected to the inside of the top plate 4. The inner wall of the monitoring body 1 is threadedly connected with an adjusting cylinder 15, and the inner wall of the adjusting cylinder 15 is fixedly connected with a monitoring probe 16. The monitoring body 1, the electric telescopic rod 3 and the monitoring probe 16 are all electrically connected to the button controller 2 through wires. The adjusting cylinder 15 can be threadedly connected to the inner wall of the monitoring body 1, so as to adjust the distance between the monitoring probe 16 and the housing of the monitored device. When the monitoring probe 16 is close to the housing of the device, it can sense the discharge of the housing of the device in real time, and conveniently transmit the corresponding electrical signal information to the monitoring body 1 and then to the button controller 2 for information processing, and further monitoring.

[0026] The outer surface of each guide rod 8 is sleeved with a return spring 9, and the two ends of each return spring 9 are respectively in contact with the back side of the top plate 4 and the front side of the movable support plate 5. The outer surface of the adjusting cylinder 15 is fixedly connected with an anti-slip sleeve 17, and the outer surface of the anti-slip sleeve 17 is fixedly connected with a plurality of identical anti-slip bosses 18. By providing the anti-slip bosses 18, the anti-slip property of the outer surface of the anti-slip sleeve 17 can be increased, and then the anti-slip sleeve 17 and the anti-slip bosses 18 can jointly increase the friction force on the outer surface of the adjusting cylinder 15, so as to facilitate the adjustment of the distance between the monitoring probe 16 and the housing of the monitored device after twisting the adjusting cylinder 15.

[0027] The working principle of the utility model is: first, after holding the two handles 12, the four support blocks 13 are pressed against the outer surface or inner wall of the shell of the device to be monitored, and the permanent magnet block 14 is tightly magnetically attracted to the metal of the outer surface or inner wall of the shell of the device, and then the anti-slip sleeve 17 and the anti-slip boss 18 on the outer surface of the adjustment tube 15 are pinched to twist the adjustment tube 15 until the monitoring head of the monitoring probe 16 is pressed against the metal of the outer surface or inner wall of the shell of the device, and then the button controller 2 is operated to make the entire monitoring body 1 and the monitoring probe 16 start to monitor the discharge situation in real time, and according to the use environment and characteristics of the equipment, the button controller 2 is operated to control the frequency and period of the static electricity extraction, and after the conductive ring 7 is electrically connected to the wire, the other end of the wire serving as the ground wire is guided into the ground or other conductive structures, and when the periodic static electricity extraction starts, the button controller 2 automatically adjusts the static electricity according to the static electricity extraction period set therein. , the electric telescopic rod 3 is periodically controlled to be energized and extended, and the top plate 4, the movable support plate 5 and the conductive column 6 are driven to push against the metal on the outer surface or inner wall of the shell of the device to be monitored. During this period, the sliding of the guide rod 8 inside the top plate 4 and the squeezing of the return spring 9 by the top plate 4 and the movable support plate 5 provide a buffer for the electric telescopic rod 3 to press against the metal on the outer surface or inner wall of the device shell, thereby regularly and timely deriving the static electricity of the monitored device itself. After that, the electric telescopic rod 3 is energized and contracted to make the conductive column 6 away from the metal on the outer surface or inner wall of the shell of the device to be monitored, completing a cycle of static electricity deriving, preventing the discharge of static electricity from affecting the monitoring accuracy of the monitoring body 1. The design of the entire power distribution partial discharge monitoring device effectively solves the problem that the power distribution partial discharge device is prone to discharge misjudgment due to the discharge of static electricity in the equipment, thereby affecting the monitoring result due to the lack of an intelligent static electricity deriving structure.

[0028] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A power distribution partial discharge monitoring device, comprising a monitoring body (1) and an electric telescopic rod (3), characterized in that: The front of the monitoring body (1) is fixedly connected to a button controller (2); the telescopic end of the electric telescopic rod (3) is fixedly connected to a top plate (4); a movable support plate (5) is arranged above the monitoring body (1); the inner wall of the movable support plate (5) is fixedly connected to a conductive column (6); one end of the conductive column (6) close to the electric telescopic rod (3) is fixedly connected to a conductive ring (7); the front of the movable support plate (5) is fixedly connected to two guide rods (8); the outer surface of each guide rod (8) is sleeved with a return spring (9).

2. The power distribution partial discharge monitoring device according to claim 1, characterized in that: The outer surface of the electric telescopic rod (3) is fixedly connected to the inner wall of the monitoring body (1), the outer surface of each guide rod (8) is slidably connected to the inside of the top plate (4), the two ends of each return spring (9) are respectively in contact with the back side of the top plate (4) and the front side of the movable support plate (5), the two side surfaces of the monitoring body (1) are fixedly connected to the pull shell (10), and the inner wall of each pull shell (10) is fixedly connected to the pull rod (11).

3. The power distribution partial discharge monitoring device according to claim 2, characterized in that: A handle (12) is provided inside each of the pull shells (10), and the inner wall of each of the handles (12) is rotatably connected to the outer surface of the pull rod (11).

4. The power distribution partial discharge monitoring device according to claim 1, characterized in that: Two groups of support blocks (13) are fixedly connected to the back of the monitoring body (1), and the inner wall of each group of support blocks (13) is fixedly connected to two permanent magnet blocks (14).

5. The power distribution partial discharge monitoring device according to claim 1, characterized in that: The inner wall of the monitoring body (1) is threadedly connected to an adjusting cylinder (15), the inner wall of the adjusting cylinder (15) is fixedly connected to a monitoring probe (16), and the monitoring body (1), the electric telescopic rod (3) and the monitoring probe (16) are all electrically connected to the key controller (2) via wires.

6. The power distribution partial discharge monitoring device according to claim 5, characterized in that: The outer surface of the adjustment cylinder (15) is fixedly connected to an anti-skid sleeve (17), and the outer surface of the anti-skid sleeve (17) is fixedly connected to a plurality of identical anti-skid convex columns (18).

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