Cable partial discharge positioning intelligent on-line monitoring device

Abstract

The invention relates to the technical field of power equipment state monitoring, and discloses a cable partial discharge positioning intelligent online monitoring device which comprises a monitor, an intelligent display screen is installed on the surface of the monitor, a connector is installed at the bottom of the monitor, and by means of the arrangement of a sealing assembly, a worker manually operates a control rod on the outer wall of a rotating disc, and the intelligent display screen is installed on the surface of the monitor. The control rod slides along the strip-shaped groove of the connecting disc and drives the rotary disc to rotate stably, the arc-shaped sliding groove of the rotary disc rotates synchronously and pushes the sliding rod to slide, the limiting disc prevents the sliding rod from deviating, the sliding rod drives the connecting plate and the sealing rod to get close to the center through the connecting rod, the three sealing rings are spliced into a circle to be attached to the connecting position, and first sealing is formed. The sealing block in the sealing ring is seamlessly attached to the connecting position under the action of the adjusting spring, a second seal is constructed, dust and water vapor are prevented from entering, the stability of signal transmission is guaranteed, and the connecting effect between the monitor and the current transformer is improved.

Description

Technical Field

[0001] This invention relates to the field of power equipment condition monitoring technology, specifically to an intelligent online monitoring device for locating partial discharge in cables. Background Technology

[0002] As the core equipment for power transmission in power systems, power cables are widely used in urban distribution networks, industrial parks, and inter-regional power transmission projects. Their operating status directly determines the security and continuity of power supply. With the continuous growth of power grid load and the increasing complexity of the operating environment, cable insulation layers are prone to partial discharge due to aging, local damage, and moisture. The continued development of partial discharge accelerates insulation deterioration, which may eventually lead to cable breakdown faults, causing large-scale power outages and resulting in significant economic losses and social impacts. Therefore, accurate location and real-time online monitoring of cable partial discharge has become a core requirement for power system operation and maintenance management. The intelligent online monitoring device for cable partial discharge location is an intelligent monitoring device used for locating cable partial discharge.

[0003] However, existing intelligent online monitoring devices for partial discharge location in cables, when used outdoors for extended periods, are prone to several problems. First, they cannot effectively isolate themselves from impurities such as dust, moisture, and corrosive gases in the outdoor environment, which can easily lead to oxidation and corrosion of wire joints and poor contact. This not only affects the stability and accuracy of partial discharge signal transmission but also reduces the precision of discharge location. Second, under the influence of vibrations during equipment operation, minor external impacts, or thermal expansion and contraction caused by changes in ambient temperature, seals are prone to loosening, displacement, or even failure, shortening the device's lifespan and failing to meet the requirements for long-term continuous online monitoring. Furthermore, sealing operations can easily interfere with signal acquisition components, further affecting the reliability of monitoring data. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides an intelligent online monitoring device for partial discharge location in cables. This device solves the problems of existing intelligent online monitoring devices for partial discharge location in cables, which are difficult to isolate from impurities such as dust, water vapor, and corrosive gases during long-term use in the external environment, leading to oxidation and corrosion of wire joints, poor contact, and consequently affecting signal transmission stability and positioning accuracy; and the sealing is prone to loosening, displacement, or even failure under vibration, collision, and thermal expansion and contraction.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the present invention provides the following technical solution: an intelligent online monitoring device for partial discharge location of cables, comprising a monitor, an intelligent display screen mounted on the surface of the monitor, a connecting connector mounted on the bottom of the monitor, and a current transformer connected to the connecting connector via a wire; further comprising a sealing assembly for sealing the connection between the monitor and the current transformer; a limiting assembly for limiting the sealing assembly after use; and a fixing assembly for fixing the sealing assembly after adjustment; the sealing assembly comprising: a fixing plate mounted on the bottom of the monitor, a connecting plate mounted on the surface of the fixing plate, a turntable rotatably connected to the inner side of the connecting plate, an arc-shaped groove on the surface of the turntable, a sliding rod slidably connected to the inner side of the arc-shaped groove, a limiting plate mounted on the surface of the sliding rod, the limiting plate fitting against the surface of the turntable, a connecting rod hinged to the surface of the sliding rod, the connecting rod penetrating the connecting plate, a connecting plate mounted on the surface of the connecting rod, a sealing rod mounted inside the connecting plate, a sealing ring mounted inside the sealing rod, and a sealing block slidably connected to the inner side of the sealing ring.

[0008] Preferably, the surface of the connecting disc is provided with holes, and an adjusting spring is installed on the top of the sealing block, the adjusting spring being installed inside the sealing ring.

[0009] Preferably, there are three sealing rings, all arranged in a circular array with the center line of the turntable as the center, and the cross-section of the three sealing rings after splicing is circular.

[0010] Preferably, the limiting component includes: a rotating ring, which is mounted on the back of the turntable, rotatably connected to the bottom of the monitor, and a fixing rod is mounted on the outer side of the rotating ring.

[0011] Preferably, a movable rod is hinged to the inner side of the fixed disk, a spiral spring is installed on one side of the movable rod, the spiral spring is installed on the outer wall of the fixed disk, and a limiting block is provided on the other side of the movable rod, the limiting block is installed on the outer wall of the fixed disk.

[0012] Preferably, the inner cross-sections of the fixed rod and the moving rod are both L-shaped, and the surface of the fixed plate is provided with a groove.

[0013] Preferably, the fixing component includes: a control rod, which is mounted on the outer wall of the turntable, slidably connected to the inner side of the connecting plate, and a plug plate is slidably connected inside the control rod, with a plug rod installed at the bottom of the plug plate.

[0014] Preferably, the surface of the connecting plate has a strip groove and an arc groove, and multiple sets of positioning blocks are installed inside the arc groove, with the insertion rod inserted into the inside of the positioning block.

[0015] Preferably, a reset spring is installed at the bottom of the insert plate, and the reset spring is installed inside the control rod.

[0016] (III) Beneficial Effects

[0017] Compared with the prior art, the present invention provides an intelligent online monitoring device for locating partial discharge in cables, which has the following beneficial effects:

[0018] 1. This intelligent online monitoring device for partial discharge location of cables utilizes a sealing assembly. Operators manually operate a control rod on the outer wall of the turntable. The control rod slides along the strip groove of the connecting plate, causing the turntable to rotate smoothly. The arc-shaped groove of the turntable rotates synchronously, pushing the sliding rod to slide. A limiting plate prevents the sliding rod from deviating. The sliding rod, through a connecting rod, drives the connecting plate and sealing rod towards the center, causing the three sealing rings to fit together in a circular, tight joint, forming the first seal. The sealing blocks inside the sealing rings, under the action of an adjusting spring, seamlessly fit into the joint, constructing the second seal, blocking dust and moisture, and ensuring the stability of signal transmission.

[0019] 2. This intelligent online monitoring device for partial discharge positioning in cables utilizes a limiting component. When the sealing components approach to seal, the turntable drives the rear rotating ring to rotate synchronously, and the fixed rod of the rotating ring follows its circular motion. When the seal is nearly complete, the fixed rod contacts the moving rod of the fixed disc, and the L-shaped structure presses against it, causing the moving rod to rotate and compress the spiral spring. After the seal is complete, the fixed rod releases its contact, the spiral spring resets, pushing the moving rod back, the limiting block precisely limits the position, and the moving rod and fixed rod engage and lock, preventing the turntable from reversing and avoiding loosening of the sealing components due to vibration or collision, thus improving sealing stability.

[0020] 3. This intelligent online monitoring device for partial discharge location in cables utilizes a fixed assembly. When adjusting the sealing assembly, the control rod moves along the strip groove of the connecting disc and then enters the arc-shaped groove to adapt to the rotation of the turntable. After the sealing and limiting assemblies are locked, the fixed assembly activates for reinforcement: the insert plate inside the control rod moves downward under the action of a pre-compressed return spring, causing the insert rod to insert into the positioning block slot of the arc-shaped groove. The positioning blocks are evenly distributed to adapt to multiple fixed positions, limiting the sliding rotation of the control rod, preventing accidental rotation of the turntable that could cause the seal to loosen, avoiding the intrusion of impurities and joint failures, extending the device's lifespan, and ensuring accurate monitoring data. Attached Figure Description

[0021] Figure 1 This is a front view schematic diagram of the structure of an intelligent online monitoring device for locating partial discharge in cables proposed in this invention;

[0022] Figure 2 This is a schematic diagram of the closed structure of the sealing component, limiting component, and fixing component of the intelligent online monitoring device for partial discharge location of cables proposed in this invention;

[0023] Figure 3 This is a schematic diagram of the opening structure of the sealing component, limiting component, and fixing component of the intelligent online monitoring device for partial discharge location of cables proposed in this invention;

[0024] Figure 4 This is a front view schematic diagram of the sealing assembly of an intelligent online monitoring device for partial discharge location of cables proposed in this invention;

[0025] Figure 5 This is a schematic diagram of the sealing ring structure of an intelligent online monitoring device for locating partial discharge in cables, as proposed in this invention.

[0026] Figure 6 This is a front view schematic diagram of the fixed plate structure of the intelligent online monitoring device for partial discharge location of cables proposed in this invention;

[0027] Figure 7 This is a front view schematic diagram of the limiting component of an intelligent online monitoring device for locating partial discharge in cables, as proposed in this invention.

[0028] Figure 8 This is a front view schematic diagram of the fixing component of the intelligent online monitoring device for locating partial discharge in cables proposed in this invention;

[0029] Figure 9 This is a schematic diagram of the cross-sectional structure of the control rod of the intelligent online monitoring device for locating partial discharge in cables proposed in this invention.

[0030] In the diagram: 1. Monitor; 2. Intelligent display screen; 3. Connecting connector; 4. Current transformer; 5. Sealing assembly; 51. Fixing plate; 52. Connecting plate; 520. Hole; 521. Strip groove; 522. Arc groove; 53. Turntable; 530. Arc slide; 54. Slide rod; 511. Limiting plate; 55. Connecting rod; 56. Connecting plate; 57. Sealing rod; 58. Sealing ring; 59. Sealing block; 510. Adjusting spring; 5100. Groove; 6. Limiting assembly; 61. Rotary ring; 62. Fixing rod; 63. Moving rod; 64. Spiral spring; 65. Limiting block; 7. Fixing assembly; 71. Control rod; 72. Insert plate; 73. Insert rod; 74. Positioning block; 75. Return spring. Detailed Implementation

[0031] 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.

[0032] Please see Figure 1 - Figure 9 As shown, an intelligent online monitoring device for partial discharge location of cables includes a monitor 1, an intelligent display screen 2 mounted on the surface of the monitor 1, a connection connector 3 mounted on the bottom of the monitor 1, and a current transformer 4 connected to the connection connector 3 via a wire.

[0033] It also includes a sealing assembly 5 for sealing the connection between the monitor 1 and the current transformer 4;

[0034] Restriction component 6 is used to restrict the sealing component 5 after use;

[0035] The fixing component 7 is used to fix the sealing component 5 after adjustment;

[0036] First, the sealing assembly 5 includes: a fixed plate 51, which is installed at the bottom of the monitor 1; a connecting plate 52 is mounted on the surface of the fixed plate 51; a turntable 53 is rotatably connected to the inner side of the connecting plate 52; an arc-shaped groove 530 is formed on the surface of the turntable 53; a sliding rod 54 is slidably connected to the inner side of the arc-shaped groove 530; a limiting plate 511 is mounted on the surface of the sliding rod 54 and fits against the surface of the turntable 53; a connecting rod 55 is hinged to the surface of the sliding rod 54 and passes through the connecting plate 52; a connecting plate 56 is mounted on the surface of the connecting rod 55. A sealing rod 57 is installed inside the connecting plate 56, a sealing ring 58 is installed inside the sealing rod 57, and a sealing block 59 is slidably connected inside the sealing ring 58. A hole 520 is installed on the surface of the connecting plate 52 to provide sufficient movement space for the connecting rod 55 and prevent it from getting stuck with the connecting plate 52 during movement. An adjusting spring 510 is installed on the top of the sealing block 59. The adjusting spring 510 is installed inside the sealing ring 58. By adjusting the elastic force of the spring 510, the sealing block 59 is continuously pushed to the connection point to achieve self-adaptive sealing and fill the surface gaps.

[0037] Secondly, there are three sealing rings 58. The three sealing rings 58 are arranged in a circular array with the center line of the turntable 53 as the center. The cross-section of the three sealing rings 58 after splicing is circular. The circular array design ensures that the sealing rings 58 are evenly stressed after splicing. The cross-section of the three sealing rings 58 after splicing is circular. The circular splicing structure accurately adapts to the shape of the connection between the connector 3 and the current transformer 4, achieving full circumferential sealing coverage.

[0038] Furthermore, the limiting component 6 includes: a rotating ring 61, which is mounted on the back of the turntable 53 and rotatably connected to the bottom of the monitor 1. A fixed rod 62 is mounted on the outer side of the rotating ring 61. A moving rod 63 is hinged to the inner side of the fixed plate 51. A spiral spring 64 is mounted on one side of the moving rod 63 and is mounted on the outer wall of the fixed plate 51. A limiting block 65 is provided on the other side of the moving rod 63 and is mounted on the outer wall of the fixed plate 51. The elastic reset characteristic of the spiral spring 64 provides the rebound force for the moving rod 63 to ensure reliable engagement. The limiting block 65 is also provided on the other side of the moving rod 63 and is mounted on the outer wall of the fixed plate 51. The limiting block 65 precisely limits the rebound position of the moving rod 63 to avoid excessive rebound that could lead to engagement failure.

[0039] Furthermore, the inner cross-sections of both the fixed rod 62 and the moving rod 63 are L-shaped, and the surface of the fixed plate 51 is provided with a groove 5100. The L-shaped structure design allows the two to form a close-fitting compression and snap-fit ​​when they come into contact, improving the stability of the locking structure. The groove 5100 on the surface of the fixed plate 51 provides clearance space for the rotation of the fixed rod 62, avoiding motion interference.

[0040] Furthermore, the fixing component 7 includes: a control rod 71, which is installed on the outer wall of the turntable 53 and slidably connected to the inner side of the connecting plate 52. A plug plate 72 is slidably connected inside the control rod 71, and a plug rod 73 is installed at the bottom of the plug plate 72. The control rod 71 provides a convenient operating component for the operator to achieve precise rotation adjustment of the turntable 53. The plug rod 73 is engaged with the positioning block 74 to restrict the movement of the control rod 71 and achieve secondary fixing.

[0041] Finally, a strip groove 521 is formed on the surface of the connecting plate 52 to provide initial guidance for the control rod 71, ensuring smooth adjustment. An arc groove 522 is formed on the surface of the connecting plate 52 to adapt to the circumferential rotation trajectory of the turntable 53, preventing the control rod 71 from derailing. Multiple sets of positioning blocks 74 are installed inside the arc groove 522, and the insertion rod 73 is inserted into the inside of the positioning block 74. Through the spaced distribution of multiple sets of positioning blocks 74, the control rod 71 can be fixed in multiple positions to adapt to different sealing adjustment requirements. The insertion rod 73 is inserted into the inside of the positioning block 74, and a rigid lock is formed through the insertion structure, further reinforcing the stability of the sealing assembly 5.

[0042] Working principle: This intelligent online monitoring device for partial discharge location in cables uses monitor 1 as the core control unit. It establishes a circuit connection with current transformer 4 via connector 3. Current transformer 4 collects partial discharge signals during cable operation in real time and transmits the electrical signals through wires to monitor 1 for analysis and processing. Intelligent display screen 2 is electrically connected to monitor 1, receiving the processed signal data and visually displaying the intensity, location, and real-time operating status of the partial discharge, facilitating real-time monitoring by staff. Sealing component 5 is the core seal at the connection point. When sealing component 5 is in the open state, the three sealing rings... 58 is in a separated state, facilitating the docking and installation of the current transformer 4 and the connecting joint 3 at the bottom of the monitor 1. After docking, the operator manually operates the control rod 71 fixed on the outer wall of the turntable 53. The control rod 71 slides along the strip groove 521 on the surface of the connecting plate 52, driving the turntable 53 to rotate smoothly inside the connecting plate 52. When the turntable 53 rotates, the arc-shaped sliding groove 530 on its surface moves in a circular motion simultaneously. The groove wall of the arc-shaped sliding groove 530 fits against the end of the sliding rod 54, generating a lateral thrust that pushes the sliding rod 54 to slide along the trajectory of the arc-shaped sliding groove 530. The limiting plate 511 on the surface of the sliding rod 54 fits tightly against the surface of the turntable 53, and the sliding... During the sliding process of rod 54, the connecting rod 55 hinged at its end moves in a pushing and pulling motion. The connecting rod 55 passes through the connecting plate 52 and drives the surface-mounted connecting plate 56 to move synchronously. The connecting plate 56 transmits power to the inner sealing rod 57, pulling the sealing rod 57 synchronously towards the central axis. The sealing rod 57 drives the corresponding sealing ring 58 to gradually approach the connection between the connecting joint 3 and the current transformer 4 until the three sealing rings 58 are precisely spliced ​​to form a complete circular structure, tightly fitting against the outside of the connection, forming the first layer of sealing protection. At the same time, the sealing block 59 slidably connected to the inner side of the sealing ring 58 adjusts the spring 51 inside. Under the elastic force of 0, it overcomes the sliding friction and pushes against the surface of the connection. Because the adjusting spring 510 has good elastic extension and contraction characteristics, it can adapt to the small uneven structure of the connection surface, so that the sealing block 59 and the connection surface can be seamlessly and tightly fitted, forming a second sealing barrier. The double sealing structure works together to not only prevent external dust, water vapor and other impurities from entering the interior of the connection and avoid poor contact caused by oxidation and corrosion of the wire joint, but also to isolate the erosion of the electrical connection parts by humid air, ensuring the stability of signal transmission between the current transformer 4 and the monitor 1, and providing reliable sealing protection for long-term online monitoring of the device.

[0043] When the operator rotates the turntable 53 via the control lever 71, causing the sealing assembly 5 to move closer to the connection point for sealing, the rotating ring 61 fixedly installed on the back of the turntable 53 will rotate synchronously with the turntable 53. The fixed rod 62, integrally formed on the outer side of the rotating ring 61, will move in a circular motion with the rotating ring 61. When the sealing assembly 5 gradually approaches the sealing position, the fixed rod 62 will contact the moving rod 63 hinged to the inner side of the fixed plate 51. Since the inner cross-sections of both the fixed rod 62 and the moving rod 63 are L-shaped, they form a close-fitting compression after contact, pushing the moving rod 63 to rotate outward around its hinge point with the fixed plate 51. At the same time, the moving rod 63 will compress the spiral spring 64 installed on one side of the outer wall of the fixed plate 51. After being stressed, the spiral spring 64 will undergo elastic deformation and store elastic potential energy. When the sealing assembly 5 is fully adjusted and the three sealing rings 58 are spliced ​​into a complete circle and fit the connection point, when the fixed rod 62 rotates to the outside of the moving rod 63, it will release the pressure. When the moving rod 63 makes contact, the spiral spring 64 is no longer compressed and begins to release the previously stored elastic potential energy, pushing itself back to its initial state. At the same time, it causes the moving rod 63 to rebound in the opposite direction around the hinge point. During the rebound of the moving rod 63, the limiting block 65 installed on the outer wall of the fixed plate 51 on the other side will play a precise limiting role. When the moving rod 63 rebounds to fit with the limiting block 65, it will stop rebounding to avoid the moving rod 63 failing to engage due to excessive rebound. After rebounding, the moving rod 63 and the L-shaped structure of the fixed rod 62 engage with each other to form a stable locking state, which can effectively prevent the fixed rod 62 from rotating in the opposite direction, thereby limiting the rotation of the turntable 53 and ensuring that the sealing component 5 always remains in a sealed position. This prevents loosening due to equipment vibration, minor external collisions, etc., improves the anti-interference ability and long-term stability of the device's sealing structure, and ensures the sealing reliability of the connection between the monitor 1 and the current transformer 4.

[0044] Inside the connecting plate 52, when the operator rotates the control lever 71 to drive the turntable 53 to adjust the sealing component 5, the control lever 71 will move along the strip groove 521 opened on the surface of the connecting plate 52, and then enter the arc groove 522 and slide along the groove. The strip groove 521 provides initial guidance for the control lever 71, and the arc groove 522 adapts to the circumferential rotation trajectory of the turntable 53, ensuring that the control lever 71 moves smoothly and does not deviate from the track. When the sealing component 5 is fully adjusted, the three sealing rings 58 are precisely spliced ​​and fit the connection, and the limiting component 6 is locked, the fixing component 7 begins to play a reinforcing role. At this time, the insert plate 72, which is slidably connected inside the control lever 71, moves downward against sliding friction under the elastic force of the bottom return spring 75. The return spring 75 is always in a pre-compressed state, which can continuously provide a stable thrust to ensure the reliability of the downward movement of the insert plate 72. During the downward movement of the insert plate 72, the insert rod 73, which is fixedly installed at its bottom, moves downward synchronously and accurately aligns with the gap between the multiple sets of positioning blocks 74 installed inside the arc groove 522. With the continuous push of the return spring 75, the insert rod 73 is smoothly inserted into the slot inside the positioning block 74. The positioning blocks 74 are evenly spaced and can be flexibly adapted according to the sealing adjustment position. The insertion point of the plug rod 73 enables multi-position fixing. The tight insertion of the plug rod 73 and the positioning block 74 effectively restricts the lateral sliding and rotation of the control rod 71, thereby fixing the position of the turntable 53 and preventing accidental rotation of the turntable 53. This prevents the sealing ring 58 from separating and the sealing block 59 from loosening due to accidental rotation of the turntable 53. It also prevents external dust and moisture from entering the connection between the monitor 1 and the current transformer 4, eliminating problems such as oxidation and corrosion of the wire joints and poor contact. This extends the service life of the device, ensures accurate partial discharge positioning monitoring data for cables, and provides continuous protection for the safe operation of power equipment.

[0045] In this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, without necessarily requiring or implying any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A smart online monitoring device for locating partial discharge in cables, comprising a monitor (1), characterized in that: The monitor (1) is equipped with a smart display screen (2) on its surface and a connector (3) is installed at the bottom of the monitor (1). A current transformer (4) is connected to the connector (3) through a wire. It also includes a sealing assembly (5) for sealing the connection between the monitor (1) and the current transformer (4); A limiting component (6) is used to limit the sealing component (5) after use; Fixing component (7) is used to fix the sealing component (5) after adjustment; The sealing assembly (5) includes: a fixed plate (51), which is installed at the bottom of the monitor (1). A connecting plate (52) is mounted on the surface of the fixed plate (51). A turntable (53) is rotatably connected to the inner side of the connecting plate (52). An arc-shaped groove (530) is formed on the surface of the turntable (53). A slide rod (54) is slidably connected to the inner side of the arc-shaped groove (530). A limited spacer is mounted on the surface of the slide rod (54). The limiting disc (511) is attached to the surface of the turntable (53). The sliding rod (54) is hinged to the surface of the connecting rod (55), which passes through the connecting disc (52). The connecting rod (55) is mounted on the surface of the connecting rod (55). The connecting plate (56) is mounted on the inner side of the connecting plate (56). The sealing rod (57) is mounted on the inner side of the sealing rod (57). The sealing ring (58) is mounted on the inner side of the sealing ring (58). The sealing block (59) is slidably connected to the inner side of the sealing ring (58).

2. The intelligent online monitoring device for locating partial discharge in cables according to claim 1, characterized in that: The surface of the connecting disc (52) is provided with holes (520), and an adjusting spring (510) is installed on the top of the sealing block (59). The adjusting spring (510) is installed inside the sealing ring (58).

3. The intelligent online monitoring device for locating partial discharge in cables according to claim 1, characterized in that: There are three sealing rings (58). The three sealing rings (58) are arranged in a circular array with the center line of the turntable (53) as the center. The cross-section of the three sealing rings (58) after splicing is circular.

4. The intelligent online monitoring device for locating partial discharge in cables according to claim 1, characterized in that: The limiting component (6) includes a rotating ring (61) mounted on the back of the turntable (53), the rotating ring (61) being rotatably connected to the bottom of the monitor (1), and a fixing rod (62) mounted on the outside of the rotating ring (61).

5. The intelligent online monitoring device for locating partial discharge in cables according to claim 4, characterized in that: A movable rod (63) is hinged to the inner side of the fixed disk (51). A spiral spring (64) is installed on the outer side of the movable rod (63). The spiral spring (64) is installed on the outer wall of the fixed disk (51). A limiting block (65) is provided on the other side of the movable rod (63). The limiting block (65) is installed on the outer wall of the fixed disk (51).

6. The intelligent online monitoring device for locating partial discharge in cables according to claim 5, characterized in that: The inner cross-sections of the fixed rod (62) and the moving rod (63) are both L-shaped, and the surface of the fixed plate (51) is provided with a groove (5100).

7. The intelligent online monitoring device for partial discharge location of cables according to claim 1, characterized in that: The fixing component (7) includes: a control rod (71), which is mounted on the outer wall of the turntable (53), and is slidably connected to the inner side of the connecting plate (52). A plug plate (72) is slidably connected inside the control rod (71), and a plug rod (73) is installed at the bottom of the plug plate (72).

8. The intelligent online monitoring device for locating partial discharge in cables according to claim 7, characterized in that: The surface of the connecting plate (52) is provided with a strip groove (521) and an arc groove (522). Multiple sets of positioning blocks (74) are installed inside the arc groove (522), and the insertion rod (73) is inserted into the inside of the positioning block (74).

9. The intelligent online monitoring device for locating partial discharge in cables according to claim 7, characterized in that: A reset spring (75) is installed at the bottom of the insert plate (72), and the reset spring (75) is installed inside the control rod (71).

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