Current transformer secondary wiring detection system and method

Abstract

The invention discloses a current transformer secondary wiring detection system and method.The detection system comprises a bottom plate, a top plate and stand columns, the stand columns are welded to the side edges of the bottom plate, the top plate is welded to the top ends of the stand columns, the top plate and the bottom plate are kept in a parallel state, and a detection through hole is formed in the middle of the top plate; a detection through hole is formed in the top plate, a wire for secondary wiring of the current transformer to be detected penetrates through the detection through hole, the detection system further comprises a connecting mechanism, a lifting mechanism and a detection assembly, and the connecting mechanism is installed on the surface of the top plate and arranged on one side of the detection through hole. The whole detection process can be automatically completed in the downward moving process of the current transformer only by clamping the electrode column part of the secondary wiring of the current transformer at the top, the detection efficiency is higher, the secondary wiring area in the whole detection process is always kept in a vertical straightening state, and the detection accuracy is improved. And the influence on the subsequent detection process caused by random distribution of the wires can be avoided.

Description

Technical Field

[0001] This invention relates to the field of electrical performance testing technology, specifically to a current transformer secondary wiring testing system and method. Background Technology

[0002] Testing the secondary wiring of current transformers ensures the accuracy and operational safety of power system measurement, metering, and protection functions. As a crucial interface connecting the primary high-voltage, high-current system with secondary low-voltage control and measurement equipment, the correctness, integrity, and insulation condition of the secondary circuit wiring of the current transformer directly determine the reliable operation of the system. The testing aims to accurately verify whether the secondary circuit connections conform to design drawings and specifications, preventing potential hazards such as damaged wires, loose electrode connections, or inconsistent wire lengths that could lead to relay protection device malfunctions or failures to operate, inaccurate energy metering, and incorrect instrument readings. Simultaneously, it ensures the safety of personnel and equipment, thus laying the foundation for the safe, stable, efficient, and compliant operation of the power system.

[0003] In existing technologies, the secondary wiring inspection of current transformers requires an external probe to clamp and contact the electrode posts and conductor surfaces to detect any leakage. This process is complicated by the haphazard distribution of the conductors, increasing the difficulty of inspection and creating blind spots. Furthermore, the secondary wiring inspection also requires checking the tightness and length of the connections. Current solutions still rely on manual labor for these tasks, which is inherently dangerous and inefficient. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a current transformer secondary wiring detection system and method to efficiently, comprehensively and safely complete the detection of wire leakage current, wiring firmness and wire length uniformity.

[0005] To solve the above-mentioned technical problems, the present invention provides a current transformer secondary wiring detection system, comprising: a base plate, a column, a top plate, a partition, a connecting mechanism, a lifting mechanism, and a detection component; The two ends of the column are fixedly connected to the base plate and the top plate respectively. The top plate is arranged parallel to the base plate. The top plate has a detection through hole for the wires of the secondary wiring of the current transformer under test to pass through. The partition is fixedly installed between the top plate and the bottom plate; The connecting mechanism is installed on the surface of the top plate and on one side corresponding to the detection through hole, and is used to clamp the electrode post and wire of the secondary wiring of the current transformer; The lifting mechanism is installed on the inner side of the partition and is used to support the current transformer under test and drive it to move up and down. The detection components are symmetrically arranged on both sides of the lifting mechanism and are connected to the partition.

[0006] Preferably, the connecting mechanism includes a transmission box, a first motor, two parallel first lead screws, a driving gear, a toothed belt, and a driven gear; the transmission box is fixedly installed on the surface of the top plate, the first motor is fixed to one end of the transmission box, and its output end is connected to one of the first lead screws; the two first lead screws respectively pass through the driving gear and the driven gear, the toothed belt is sleeved between the driving gear and the driven gear, and the first motor drives the driven gear and the two first lead screws to rotate synchronously through the driving gear and the toothed belt.

[0007] Preferably, the connecting mechanism further includes two fixed frames, a connecting rod, a top-supporting assembly, and a rotating assembly; the two fixed frames are fixedly connected by the connecting rod, forming a double-layer structure and an overall U-shape, with their bottoms conforming to the surface of the top plate, for fitting onto the side of the electrode post and the wire and translating along the first lead screw; the top-supporting assembly includes a movable plate, a slider, a top-supporting plate, and a first threaded sleeve, with the slider at one end of the movable plate and the first threaded sleeve at the other end, the top-supporting plate mounted on the surface of the movable plate, and the first lead screw passing through the first threaded sleeve; the rotating assembly includes a rotating shaft, a pressure plate, and a clamping plate, the rotating shaft being inserted into the end of the fixed frame, the pressure plate being perpendicular to the clamping plate and integrally formed on the surface of the rotating shaft, the top-supporting plate translating and abutting against the pressure plate, driving the clamping plate to rotate and clamp the electrode post and the wire.

[0008] Preferably, two grooves are provided on one side of the fixed frame, and a first spring rod is inserted into each groove; the slider has a T-shaped structure and is embedded in the groove, and the first spring rod passes through a hole on the surface of the slider.

[0009] Preferably, the lifting mechanism includes a second motor, a second lead screw, a second threaded sleeve, a support plate, and two symmetrically arranged side baffles; the second motor is fixed to the surface of the top plate, its output end is connected to the second lead screw, the end of the second lead screw is connected to the bottom plate through a bearing, and the second threaded sleeve passes through it; the support plate is connected to the second threaded sleeve, and its top is aligned with the detection through hole for supporting the current transformer under test; the two side baffles are integrally formed on both sides of the support plate, and their surfaces are attached to and limited by the partition plate.

[0010] Preferably, the detection component includes a strip hole, an inclined plate, a telescopic plate, and a conductive probe; the strip hole is formed on the surface of the partition plate, the telescopic plate passes through the strip hole, and the inclined plate is provided at its end; the conductive probe is embedded at the end of the inclined plate and is used to abut against the electrode post and the wire; when the side baffle is raised and lowered, it abuts against the inclined plate and drives the telescopic plate to move and extend within the strip hole.

[0011] Preferably, the detection assembly further includes a guide frame, a second spring rod, and a pressure sensing module; the guide frame is fixed to one side of the partition, the second spring rod is inserted into its inner wall, the other end of the second spring rod is fixedly connected to the telescopic plate, and one end of the spring presses the pressure sensing module; the second spring rod is used to push the telescopic plate toward the current transformer, and the pressure sensing module is used to acquire pressure data to determine the wire connection firmness and length uniformity.

[0012] Preferably, the slider of the top abutment assembly is adapted to the groove of the fixed frame so that the movable plate can move smoothly along the groove, and the first spring rod is used to buffer the translational impact force of the movable plate.

[0013] Preferably, the clamping plate of the rotating assembly is inserted into the inner region of the fixed frame after rotation, and cooperates with the inner wall of the fixed frame to form a clamping space, thereby achieving stable clamping of the electrode post and the wire.

[0014] The present invention also provides a detection method using the detection system, comprising: Step S1: Place the current transformer under test on the lifting mechanism and control the current transformer to maintain a vertical state so that the electrode post of its secondary wiring is vertically upward. Step S2: Pass the secondary terminal of the current transformer through the detection through hole of the top plate, so that the conductor portion is located above the top plate; Step S3: Control the connecting mechanism to move towards the electrode post and abut against its surface, and continuously drive the connecting mechanism until the electrode post and wire are clamped and fixed. Step S4: Control the lifting mechanism to drive the current transformer to move down. During the downward movement, the connecting mechanism always clamps the wire and moves with the wire to maintain its tension. At the same time, the lifting mechanism triggers the detection component, so that the detection end of the detection component touches the surface of the wire. Step S5: The detection component detects leakage current on the surface of the conductor, and as the current transformer continues to move downward, the detection area of ​​the conductor is expanded. Step S6: When the secondary wiring wire moves past the connection mechanism, pressure-related data is obtained through the detection component. The stability of the wire connection is judged based on the pressure data change, and the uniformity of the length of the two wires is judged by the synchronicity of the pressure changes of the detection components on both sides.

[0015] This invention offers the following significant advantages: Through the coordinated action of the connecting mechanism and the lifting mechanism, the electrode post of the secondary wiring is first precisely clamped. Then, as the current transformer moves downward, the clamping area is automatically transferred to the cable section, ensuring the conductor remains vertically taut. This effectively avoids detection blind spots and missed detections caused by haphazard conductor distribution, guaranteeing the comprehensiveness and reliability of the detection. Simultaneously, the symmetrical detection components on both sides provide additional lateral thrust on top of the vertical tension applied by the connecting mechanism. This allows for simultaneous detection of conductor leakage, verification of wiring firmness, and determination of the uniformity of the two conductor lengths during the current transformer's downward movement, achieving integrated multi-dimensional detection. The entire detection process is highly automated, requiring only initial clamping of the electrode post to automatically complete the entire detection process, significantly improving detection efficiency. Furthermore, it eliminates the need for manual contact with the high-voltage secondary wiring area, reducing detection risks and completely avoiding interference from conductor distribution. This provides strong support for the safe, stable, and efficient operation of the power system. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of a current transformer secondary wiring detection system according to an embodiment of the present invention.

[0018] Figure 2 This is a schematic diagram of the connection mechanism in a current transformer secondary wiring detection system according to Embodiment 1 of the present invention.

[0019] Figure 3 This is a schematic diagram of the structure of the fixed frame in a current transformer secondary wiring detection system according to Embodiment 1 of the present invention.

[0020] Figure 4 This is a schematic diagram of the rotating component in a current transformer secondary wiring detection system according to an embodiment of the present invention.

[0021] Figure 5 This is a schematic diagram of the lifting mechanism in a current transformer secondary wiring detection system according to Embodiment 1 of the present invention.

[0022] Figure 6 This is a schematic diagram of the structure of a detection component in a current transformer secondary wiring detection system according to an embodiment of the present invention.

[0023] Figure 7This is a schematic diagram of the internal disassembled structure of the transmission box in a current transformer secondary wiring detection system according to Embodiment 1 of the present invention.

[0024] Figure 8 This is a flowchart illustrating a method for detecting the secondary wiring of a current transformer according to Embodiment 2 of the present invention.

[0025] The attached figures are labeled as follows: 1. Base plate; 2. Column; 3. Top plate; 4. Detection through hole; 5. Connecting mechanism; 6. Lifting mechanism; 7. Detection assembly; 8. Transmission box; 9. First motor; 10. First lead screw; 11. Fixed frame; 12. Connecting rod; 13. Top support assembly; 14. Rotating assembly; 15. Driving gear; 16. Toothed belt; 17. Driven gear; 18. Movable plate; 19. Slider; 20. Top support plate ; 21. First threaded sleeve; 22. Slide groove; 23. First spring rod; 24. Rotating shaft; 25. Pressure plate; 26. Clamping plate; 27. Second motor; 28. Second lead screw; 29. ​​Support plate; 30. Side baffle; 31. Second threaded sleeve; 32. Partition plate; 33. Strip hole; 34. Inclined plate; 35. Telescopic plate; 36. Guide frame; 37. Second spring rod; 38. Pressure sensing module; 39. Conductive probe. Detailed Implementation

[0026] The following descriptions of various embodiments are based on the accompanying drawings, illustrating specific embodiments in which the present invention can be implemented. In the description of the present invention, it should be understood that the terms "longitudinal," "length," "circumferential," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0027] Please refer to the following at the same time Figure 1-7 As shown, this embodiment of the invention provides a current transformer secondary wiring detection system, including: a base plate 1, a column 2, a top plate 3, a partition 32, a connecting mechanism 5, a lifting mechanism 6, and a detection component 7; The two ends of the column 2 are fixedly connected to the base plate 1 and the top plate 3 respectively. The top plate 3 is arranged parallel to the base plate 1. The top plate 3 has a detection through hole 4 for the wires of the secondary wiring of the current transformer under test to pass through. The partition 32 is fixedly installed between the top plate 3 and the bottom plate 1; The connecting mechanism 5 is installed on the surface of the top plate 3 and on one side corresponding to the detection through hole 4, and is used to clamp the electrode post and wire of the secondary wiring of the current transformer. The lifting mechanism 6 is installed on the inner side of the partition 32 and is used to support the current transformer under test and drive it to rise and fall. The detection components 7 are symmetrically arranged on both sides of the lifting mechanism 6 and are connected to the partition 32.

[0028] Specifically, in this embodiment of the invention, a column 2 is welded to the side of the base plate 1, and a top plate 3 is welded to the top of the column 2. The top plate 3 and the base plate 1 are kept parallel. A detection through hole 4 is opened in the middle of the top plate 3 for passing through the wires used for secondary wiring of the current transformer under test. The column 2 is used to support and fix the top plate 3 at the top. A partition plate 32 is welded between the top plate 3 and the base plate 1. A detection component 7 is arranged on the side of the partition plate 32. A lifting mechanism 6 is installed on the inner side of the partition plate 32. The detection components 7 are arranged symmetrically on both sides of the lifting mechanism 6.

[0029] When using the detection system of this embodiment, the current transformer to be tested is placed on the support plate 29 of the lifting mechanism 6, and the current transformer is controlled to be in a vertical state, so that the electrode post of the secondary wiring is vertically upward; the secondary wiring terminal of the current transformer is passed through the detection through hole 4 at the top, and the wire part is above the top plate 3, and the extension and distribution of the wire is not restricted; the first motor 9 is started, and the connecting mechanism 5 is controlled to clamp the electrode post of the secondary wiring. During the translation process, the connecting mechanism 5 abuts against the surface of the electrode post, and the first motor 9 is continuously started until the abutting component 13 triggers the rotating component 14 until the electrode post is clamped; The lifting mechanism 6 is lowered, triggering the detection component 7 to make contact with the secondary wiring wire. During the downward movement of the lifting mechanism 6, the top connecting mechanism 5 always clamps the wire. The detection component 7 detects any leakage current on the surface of the secondary wiring wire. As the current transformer continues to move downward, the detection component 7 changes the area of ​​the wire being inspected. The top secondary wiring wire is moved past the upper connecting mechanism 5 to check the connection stability and length uniformity of the wire. Pressure data is obtained through the pressure sensing module 38 in the detection component 7, and the actual pressure data is used to determine whether there is any premature loosening of the two wires.

[0030] In this embodiment, the connecting mechanism 5 includes: a transmission box 8, a first motor 9, and a first lead screw 10. The transmission box 8 is screwed onto the surface of the top plate 3. The first motor 9 is screwed onto one end of the surface of the transmission box 8. The output end of the first motor 9 is connected to the first lead screw 10. The transmission box 8 is provided with a driving gear 15, a toothed belt 16, and a driven gear 17. There are two first lead screws 10, and the two first lead screws 10 pass through the interior of the driving gear 15 and the driven gear 17, respectively.

[0031] The surface of the driving gear 15 is fitted with a toothed belt 16, and the inner side of the other end of the toothed belt 16 is provided with a driven gear 17. The two first lead screws 10 are parallel to each other. The first motor 9 drives the driving gear 15 to rotate through one of the first lead screws. The driving gear 15 controls the driven gear 17 to move synchronously through the toothed belt 16.

[0032] The connecting mechanism 5 also includes: a fixed frame 11, a connecting rod 12, a top support assembly 13, and a rotating assembly 14. The fixed frame 11 has a double-layer structure, and there are two fixed frames 11. The two fixed frames 11 are welded together by the connecting rod 12. A sliding groove 22 is provided on one side of the fixed frame 11. A first spring rod 23 is inserted into the sliding groove 22. Each fixed frame 11 has two sliding grooves 22 and two first spring rods 23 on its surface.

[0033] The fixed frame 11 has an overall U-shaped structure. The bottom of the fixed frame 11 is pressed against the surface of the top plate 3. The fixed frame 11 is used to be sleeved on the electrode post and the side of the wire of the secondary wiring of the current transformer under test. The fixed frame 11 moves linearly along the first lead screw 10.

[0034] The top support assembly 13 includes: a movable plate 18, a slider 19, a top support plate 20, and a first threaded sleeve 21. The slider 19 is integrally formed at one end of the movable plate 18, and the first threaded sleeve 21 is welded to the other end of the movable plate 18. The top support plate 20 is installed on the surface of the movable plate 18, and the slider 19 has an overall T-shaped structure.

[0035] The movable plate 18 is embedded into the interior of the slide groove 22 via the side slider 19. The first lead screw 10 is used to pass through the interior of the first threaded sleeve 21. The surface of the slider 19 is provided with holes, and the first spring rod 23 passes through the inside of the holes on the surface of the slider 19.

[0036] The connecting mechanism 5 also includes: a rotating shaft 24, a pressure plate 25, and a clamping plate 26. The two ends of the rotating shaft 24 are inserted into the ends of the fixed frame 11. The surface of the rotating shaft 24 is connected to the pressure plate 25 and the clamping plate 26. The clamping plate 26 and the pressure plate 25 are kept perpendicular to each other. The pressure plate 25 and the clamping plate 26 are integrally formed.

[0037] The top plate 20 rests against the surface of the pressure plate 25 after translational movement. The clamping plate 26 is used to clamp the electrode posts and wires of the secondary wiring on the current transformer under test by rotational movement. After rotation, the clamping plate 26 is embedded into the inner area of ​​the fixed frame 11.

[0038] The top connecting mechanism 5 can directly clamp and fix the electrode post area of ​​the secondary wiring of the current transformer under test. Then, with the bottom lifting mechanism 6, the clamping area can be automatically transferred from the electrode post part to the cable area of ​​the secondary wiring, so that the wire can be tensioned and straightened in the subsequent testing process, ensuring the comprehensiveness and reliability of the test.

[0039] Specifically, after the first motor 9 is started, the first motor 9 drives the drive gear 15 and the first lead screw 10 on the drive gear 15 to rotate. The first lead screw 10, in conjunction with the first threaded sleeve 21, drives the entire top support assembly 13 to move linearly along the surface of the top plate 3 until the top support assembly 13 is moved to the side of the electrode post on the current transformer under test. At this time, the fixed frame 11 is partially blocked by the electrode post, which prevents it from continuing to move horizontally. At this time, the first motor 9 is started again, and the lead screw drives the first threaded sleeve 21 and the top support assembly 13 to move along the inside of the slide groove 22. The slider 19, in conjunction with the slide groove 22, ensures that the entire movable plate 18 can continue to move horizontally.

[0040] Until the top plate 20 on the movable plate 18 rests against the pressure plate 25, it can cooperate with the rotating shaft 24 to drive the clamping plate 26 on the other side to rotate. The clamping plate 26 clamps and fixes the electrode post, thereby achieving the purpose of clamping the secondary wiring area. The two first lead screws 10 achieve synchronous movement through the transmission effect of the toothed belt 16, the driving gear 15, and the driven gear 17.

[0041] In this embodiment, the lifting mechanism 6 includes: a second motor 27, a second lead screw 28, a second threaded sleeve 31, and a support plate 29. The second motor 27 is screwed onto the surface of the top plate 3. Side baffles 30 are integrally formed on both sides of the support plate 29. The output end of the second motor 27 is connected to the second lead screw 28. The second threaded sleeve 31 is provided on one side of the support plate 29. The second lead screw 28 passes downward through the inside of the second threaded sleeve 31.

[0042] The end of the second lead screw 28 is fitted with a bearing, and the second lead screw 28 is embedded into the surface of the bottom plate 1 through the bearing at the end. The surface of the side baffle 30 is in contact with the surface of the partition 32, and the partition 32 is used to block and limit the side baffle 30.

[0043] The tray 29 is used to place the current transformer to be tested, and the top of the tray 29 is aligned with the detection through hole 4. There are two side baffles 30, and the two side baffles 30 are arranged symmetrically on both sides of the tray 29.

[0044] Specifically, after the second motor 27 is started, it will drive the second threaded sleeve 31 at the bottom to move through the second lead screw 28, thereby driving the support plate 29 and the current transformer placed on the support plate 29 to move downward. Therefore, as the current transformer moves downward, the top guide will be pulled downward synchronously. Since the top connecting mechanism 5 is always in a clamping state on the conductor, it can change the clamping position of the connecting mechanism 5 on the conductor when the current transformer moves downward, and always ensure that the conductor is in a taut state.

[0045] In this embodiment, the detection component 7 includes: a strip hole 33, an inclined plate 34, a telescopic plate 35, and a conductive probe 39. The surface of the partition plate 32 is provided with a strip hole 33, and the telescopic plate 35 is inserted inside the strip hole 33. An inclined plate 34 is integrally formed at the end of the telescopic plate 35, and a conductive probe 39 is embedded at the end of the inclined plate 34. The conductive probe 39 is used to abut against the electrode post of the current transformer under test and the wire of the secondary wiring. The side baffle 30 moves up and down along the partition 32 and then rests against the surface of the inclined plate 34. The telescopic plate 35 and the inclined plate 34 both move in translation and telescopic motion inside the strip hole 33.

[0046] The detection assembly 7 further includes a guide frame 36, a second spring rod 37, and a pressure sensing module 38. The guide frame 36 is welded to one side of the partition plate 32. The second spring rod 37 is inserted into the inner wall of the guide frame 36. The other end of the second spring rod 37 is welded to the surface of the telescopic plate 35. The pressure sensing module 38 is also installed on the inner side of the guide frame 36. One end of the spring on the second spring rod 37 presses against the surface of the pressure sensing module 38. The second spring rod 37 is used to push the telescopic plate 35 toward the position of the current transformer under test.

[0047] The detection components 7 on both sides of the bottom can provide additional thrust from both sides after the connecting mechanism 5 applies a pulling force in the vertical direction to the top conductor. Through this process, the leakage current of the secondary wiring conductor can be detected comprehensively and evenly during the process of the lifting mechanism 6 driving the entire current transformer to move down. At the same time, the firmness of the secondary wiring and whether the lengths of the two wires in the wiring are completely consistent are also checked.

[0048] Specifically, as the support plate 29 moves down, it will pass over the inclined plate 34 on the side with the help of the side baffle 30. Therefore, after the inclined plate 34 is pushed, the telescopic plate 35 moves into the interior of the guide frame 36 until the side baffle 30 completely passes over the area of ​​the conductive probe 39 on the inclined plate 34. At this time, the telescopic plate 35 will be pushed by the second spring rod 37 until the inclined plate 34 and the conductive probe 39 are pushed out from the inside of the strip hole 33 toward the middle position. Therefore, the conductive probe 39 will be pressed against the surface of the secondary wiring wire that is already in a straightened state. The leakage current detection process of the wire is realized through the conductive probe 39.

[0049] The pressure sensing module 38 is an existing mature technology and is not within the scope of protection of this invention. Therefore, the internal circuit structure and other specifications of the pressure sensing module 38 will not be described in detail here. This invention only needs to use the pressure sensing module 38 to achieve the required pressure monitoring function.

[0050] Meanwhile, since the top of the conductor is in a clamped state and is under tension, it can be subjected to the horizontal thrust applied by the detection components 7 on both sides. When the connection between the bottom of any guide and the electrode post of the current transformer is unstable, causing it to loosen during the top contact process, the pressure transmitted to the conductive probe 39 will drop sharply. At this time, the instantaneous change in the value in the corresponding pressure sensing module 38 can be used to determine whether the conductor has loosened. Similarly, by obtaining whether the pressure values ​​of the pressure sensing modules 38 on both sides drop sharply at the same time, it can be determined whether the two conductors clamped by the top connecting mechanism 5 have crossed the end area at the same time, that is, whether the lengths of the two secondary wiring conductors are consistent.

[0051] Please refer to again Figure 8 As shown, corresponding to the current transformer secondary wiring detection system of Embodiment 1 of the present invention, Embodiment 2 of the present invention provides a detection method using the detection system, including: Step S1: Place the current transformer under test on the lifting mechanism and control the current transformer to maintain a vertical state so that the electrode post of its secondary wiring is vertically upward. Step S2: Pass the secondary terminal of the current transformer through the detection through hole of the top plate, so that the conductor portion is located above the top plate; Step S3: Control the connecting mechanism to move towards the electrode post and abut against its surface, and continuously drive the connecting mechanism until the electrode post and wire are clamped and fixed. Step S4: Control the lifting mechanism to drive the current transformer to move down. During the downward movement, the connecting mechanism always clamps the wire and moves with the wire to maintain its tension. At the same time, the lifting mechanism triggers the detection component, so that the detection end of the detection component touches the surface of the wire. Step S5: The detection component detects leakage current on the surface of the conductor, and as the current transformer continues to move downward, the detection area of ​​the conductor is expanded. Step S6: When the secondary wiring wire moves past the connection mechanism, pressure-related data is obtained through the detection component. The stability of the wire connection is judged based on the pressure data change, and the uniformity of the length of the two wires is judged by the synchronicity of the pressure changes of the detection components on both sides.

[0052] For the working principle and process of this embodiment, please refer to the description of the aforementioned Embodiment 1 of the present invention, which will not be repeated here.

[0053] Compared with existing technologies, this invention has the following significant advantages: Through the coordinated action of the connecting mechanism and the lifting mechanism, the invention first precisely clamps the electrode post of the secondary wiring, and then automatically transfers the clamping area to the cable section as the current transformer moves downward, ensuring the conductor remains vertically tensioned. This effectively avoids detection blind spots and missed detections caused by the haphazard distribution of conductors, guaranteeing the comprehensiveness and reliability of the detection. Simultaneously, the symmetrical detection components on both sides provide additional lateral thrust on top of the vertical tension applied by the connecting mechanism. This allows for simultaneous detection of conductor leakage, verification of wiring firmness, and judgment of the uniformity of the two conductor lengths during the downward movement of the current transformer, achieving integrated multi-dimensional detection. The entire detection process is highly automated; only the initial clamping of the electrode post is required to automatically complete the entire detection process, significantly improving detection efficiency. Furthermore, it eliminates the need for manual contact with the high-voltage secondary wiring area, reducing detection risks and completely avoiding interference from conductor distribution. This provides strong support for the safe, stable, and efficient operation of the power system.

[0054] The above description is merely a preferred embodiment of the present invention and should not be construed as limiting the scope of the invention. Therefore, any equivalent variations made in accordance with the claims of the present invention are still within the scope of the present invention.

Claims

1. A current transformer secondary wiring detection system, characterized in that, include: The base plate (1), column (2), top plate (3), partition (32), connecting mechanism (5), lifting mechanism (6) and detection component (7); The two ends of the column (2) are fixedly connected to the base plate (1) and the top plate (3) respectively. The top plate (3) is arranged parallel to the base plate (1). The top plate (3) has a detection through hole (4) for the wires of the secondary wiring of the current transformer under test to pass through. The partition (32) is fixedly installed between the top plate (3) and the bottom plate (1); The connecting mechanism (5) is installed on the surface of the top plate (3) and on one side corresponding to the detection through hole (4) for clamping the electrode post and wire of the secondary wiring of the current transformer; The lifting mechanism (6) is installed on the inner side of the partition (32) and is used to carry the current transformer under test and drive it to rise and fall. The detection components (7) are symmetrically arranged on both sides of the lifting mechanism (6) and connected to the partition (32).

2. The system according to claim 1, characterized in that, The connecting mechanism (5) includes a transmission box (8), a first motor (9), two parallel first lead screws (10), a driving gear (15), a toothed belt (16), and a driven gear (17). The transmission box (8) is fixedly installed on the surface of the top plate (3). The first motor (9) is fixed to one end of the transmission box (8), and its output end is connected to one of the first lead screws (10). The two first lead screws (10) pass through the driving gear (15) and the driven gear (17) respectively. The toothed belt (16) is sleeved between the driving gear (15) and the driven gear (17). The first motor (9) drives the driven gear (17) and the two first lead screws (10) to rotate synchronously through the driving gear (15) and the toothed belt (16).

3. The system according to claim 2, characterized in that, The connecting mechanism (5) further includes two fixed frames (11), a connecting rod (12), a top support assembly (13), and a rotating assembly (14); the two fixed frames (11) are fixedly connected by the connecting rod (12), forming a double-layer structure and an overall U-shape, with their bottoms attached to the surface of the top plate (3), for fitting onto the side of the electrode post and the wire and translating along the first lead screw (10); the top support assembly (13) includes a movable plate (18), a slider (19), a top support plate (20), and a first threaded sleeve (21), with the slider (19) at one end of the movable plate (18) and the top support plate (20) at the other end. The first threaded sleeve (21) is mounted on the surface of the movable plate (18), and the first lead screw (10) passes through the first threaded sleeve (21). The rotating assembly (14) includes a rotating shaft (24), a pressure plate (25), and a clamping plate (26). The rotating shaft (24) is inserted into the end of the fixed frame (11). The pressure plate (25) is perpendicular to the clamping plate (26) and integrally formed on the surface of the rotating shaft (24). After the top plate (20) is translated, it abuts against the pressure plate (25) and drives the clamping plate (26) to rotate and clamp the electrode post and the wire.

4. The system according to claim 3, characterized in that, The fixed frame (11) has two grooves (22) on one side, and a first spring rod (23) is inserted into each groove (22); the slider (19) has a T-shaped structure and is embedded in the groove (22), and the first spring rod (23) passes through the hole on the surface of the slider (19).

5. The system according to claim 1, characterized in that, The lifting mechanism (6) includes a second motor (27), a second lead screw (28), a second threaded sleeve (31), a support plate (29), and two symmetrically arranged side baffles (30). The second motor (27) is fixed to the surface of the top plate (3), and its output end is connected to the second lead screw (28). The end of the second lead screw (28) is connected to the bottom plate (1) through a bearing and passes through the second threaded sleeve (31). The support plate (29) is connected to the second threaded sleeve (31), and its top is aligned with the detection through hole (4) to support the current transformer under test. The two side baffles (30) are integrally formed on both sides of the support plate (29), and their surfaces are attached to the partition plate (32) and limited by it.

6. The system according to claim 5, characterized in that, The detection component (7) includes a strip hole (33), an inclined plate (34), a telescopic plate (35), and a conductive probe (39). The strip hole (33) is opened on the surface of the partition plate (32). The telescopic plate (35) passes through the strip hole (33) and the inclined plate (34) is provided at its end. The conductive probe (39) is embedded at the end of the inclined plate (34) and is used to abut against the electrode post and the wire. When the side baffle (30) rises and falls, it abuts against the inclined plate (34) and drives the telescopic plate (35) to move and extend within the strip hole (33).

7. The system according to claim 6, characterized in that, The detection component (7) further includes a guide frame (36), a second spring rod (37), and a pressure sensing module (38); the guide frame (36) is fixed to one side of the partition (32), and the second spring rod (37) is inserted into its inner wall. The other end of the second spring rod (37) is fixedly connected to the telescopic plate (35), and one end of the spring presses the pressure sensing module (38); the second spring rod (37) is used to push the telescopic plate (35) toward the current transformer, and the pressure sensing module (38) is used to acquire pressure data to determine the wire connection firmness and length uniformity.

8. The system according to claim 3, characterized in that, The slider (19) of the top support assembly (13) is adapted to the groove (22) of the fixed frame (11) so that the movable plate (18) can be smoothly translated along the groove (22), and the first spring rod (23) is used to buffer the translational impact force of the movable plate (18).

9. The system according to claim 3, characterized in that, The clamping plate (26) of the rotating component (14) is inserted into the inner area of ​​the fixed frame (11) after rotation, and cooperates with the inner wall of the fixed frame (11) to form a clamping space, thereby achieving stable clamping of the electrode post and the wire.

10. A detection method using the detection system as described in claim 1, characterized in that, include: Step S1: Place the current transformer under test on the lifting mechanism and control the current transformer to maintain a vertical state so that the electrode post of its secondary wiring is vertically upward. Step S2: Pass the secondary terminal of the current transformer through the detection through hole of the top plate, so that the conductor portion is located above the top plate; Step S3: Control the connecting mechanism to move towards the electrode post and abut against its surface, and continuously drive the connecting mechanism until the electrode post and wire are clamped and fixed. Step S4: Control the lifting mechanism to drive the current transformer to move down. During the downward movement, the connecting mechanism always clamps the wire and moves with the wire to maintain its tension. At the same time, the lifting mechanism triggers the detection component, so that the detection end of the detection component touches the surface of the wire. Step S5: The detection component detects leakage current on the surface of the conductor, and as the current transformer continues to move downward, the detection area of ​​the conductor is expanded. Step S6: When the secondary wiring wire moves past the connection mechanism, pressure-related data is obtained through the detection component. The stability of the wire connection is judged based on the pressure data change, and the uniformity of the length of the two wires is judged by the synchronicity of the pressure changes of the detection components on both sides.

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