A precise transposed conductor laser detection system for UHV transformers

Abstract

The present application relates to the field of wire detection, and in particular to a precise transposed wire laser detection system for ultra-high voltage transformers, comprising a fixed bracket, a rotating bracket, a laser distance sensor, a driving device, a speed sensor, a controller, and a display; the rotating bracket is rotationally connected to the fixed bracket, the driving device is transmission-connected to the rotating bracket, the laser distance sensor is fixedly connected to the rotating bracket, the speed sensor is fixedly connected to the fixed bracket, the speed sensor, the driving device, the laser distance sensor, and the display are respectively connected to the controller; the rotating bracket is arranged around the wire, and the laser transceiver port of the laser distance sensor is directly opposite to the central axis of the wire; the speed sensor is used to detect the axial transmission speed of the wire, the controller controls the driving device and the laser distance sensor to work according to the axial transmission speed of the wire, the driving device is used to drive the rotating bracket to rotate around the wire, and the laser distance sensor is used to measure the distance of the protrusion on the surface of the wire.

Description

Technical Field

[0001] The present application relates to the field of conductor detection, and in particular to a precise transposed conductor laser detection system for ultra-high voltage transformers. Background Art

[0002] The precision transposed conductor is a commonly used conductor in UHV transformers. It is usually made of multiple copper wires wrapped with paper insulation tape to form a wire bundle. In the axial direction of the wire bundle, the winding of the paper insulation tape and the local bending of the copper wire will produce different degrees of protrusions on the surface. In order to ensure the quality of the wire, the wire will be inspected before leaving the factory to ensure that the protrusion distance on the wire surface is within the allowable range. Manual inspection or image scanning inspection is usually used in the prior art. For manual inspection, not only is the efficiency low, but also the reliability is not high. For image scanning inspection, it is necessary to rely on image acquisition, data processing and other systems, which is not only costly, but also has high latency. The wire transmission speed cannot be too fast, so the work efficiency is also low. Summary of the invention

[0003] In view of this, a precise transposed conductor laser detection system for UHV transformers is proposed to improve the reliability of detection results and improve work efficiency.

[0004] The present application provides a precise transposed conductor laser detection system for an ultra-high voltage transformer, comprising a fixed bracket, a rotating bracket, a laser distance sensor, a driving device, a speed sensor, a controller, and a display; the rotating bracket is rotationally connected to the fixed bracket, the driving device is transmission-connected to the rotating bracket, the laser distance sensor is fixedly connected to the rotating bracket, the speed sensor is fixedly connected to the fixed bracket, the speed sensor, the driving device, the laser distance sensor, and the display are respectively connected to the controller; the rotating bracket is arranged around the conductor, and the laser transceiver port of the laser distance sensor is directly opposite to the central axis of the conductor; the speed sensor is used to detect the axial transmission speed of the conductor, the controller controls the driving device and the laser distance sensor to work according to the axial transmission speed of the conductor, the driving device is used to drive the rotating bracket to rotate around the conductor, the laser distance sensor is used to measure the distance of the protrusion on the surface of the conductor, and the display is used to display the distance of the protrusion on the surface of the conductor.

[0005] In some embodiments of the above-mentioned precision transposed conductor laser detection system for ultra-high voltage transformers, the laser distance sensor includes two first laser distance sensors, the first laser distance sensors are arranged along the axial direction of the conductor, the transmission speed of the conductor is v (m / s), the angular velocity of the rotating bracket is w (degrees / s), and the arrangement spacing of the first laser distance sensors is d (m), w=360v / d.

[0006] In some embodiments of the above-mentioned precision transposed conductor laser detection system for ultra-high voltage transformers, the controller controls the first laser distance sensor to intermittently emit laser, and the time interval for the first laser distance sensor to emit laser is t (seconds), t=θ / w, 5≤θ (degrees)≤10.

[0007] In some embodiments of the above-mentioned precision transposed conductor laser detection system for ultra-high voltage transformers, the laser distance sensor also includes two second laser distance sensors, the second laser distance sensors are arranged along the axial direction of the conductor, the second laser distance sensor and the first laser distance sensor are respectively located on both sides of the conductor, the first laser distance sensor on the front side and the second laser distance sensor on the front side are located on the same straight line, the arrangement spacing of the second laser distance sensors is d / 2, and the controller controls the first laser distance sensor and the second laser distance sensor to synchronously and intermittently emit lasers.

[0008] In some embodiments of the above-mentioned precision transposed conductor laser detection system for ultra-high voltage transformers, the speed sensor adopts a laser sensor, the laser transceiver port of the speed sensor is facing the central axis of the conductor, the speed sensor is located on the front side of the laser distance sensor, the speed sensor detects the edge of the paper insulating tape on the conductor and transmits the detection result to the controller, and the controller calculates the number of times the edge of the paper insulating tape passes through the speed sensor per unit time to obtain the transmission speed of the conductor.

[0009] In some embodiments of the above-mentioned precision transposed conductor laser detection system for ultra-high voltage transformers, the driving device adopts a servo motor, the rotating bracket is in the shape of a circular ring, and the outer side surface of the rotating bracket is fixedly connected to a ring-shaped driven gear, and a driving gear is fixedly connected to the output shaft of the driving device, and the driving gear is meshingly connected with the driven gear. The shape of the fixed bracket is cylindrical, the rotating bracket is located on the inner side of the fixed bracket, and a rolling bearing is provided between the outer side surface of the rotating bracket and the inner side surface of the fixed bracket, and the rotating bracket is rotatably connected to the fixed bracket through the rolling bearing.

[0010] In some embodiments of the above-mentioned precision transposed conductor laser detection system for ultra-high voltage transformers, a dynamic list area is displayed on the display, and the dynamic list area records the current value and historical value of the protrusions on the conductor surface.

[0011] In some embodiments of the above-mentioned precision transposed conductor laser detection system for ultra-high voltage transformers, an abnormal point density distribution area is displayed on the display, and a reference time axis is recorded in the abnormal point density distribution area. The starting time of the reference time axis is T1 (seconds) and the ending time is T2 (seconds). The end time of the reference time axis is synchronized with the current real-time time, T2-T1≥60 (seconds), and the abnormal points are arranged in time sequence on the reference time axis, and the corresponding time of the abnormal point is the same as the time when the distance of the protrusion on the conductor surface exceeds the allowable range.

[0012] In some embodiments of the above-mentioned precision transposed conductor laser detection system for ultra-high voltage transformers, a real-time protrusion distance display area is displayed on the display, and a time-distance coordinate system is recorded in the real-time protrusion distance display area. The time-distance coordinate system records the coordinate points of the distance of the protrusion on the conductor surface measured by the laser distance sensor in the last 30 minutes changing with time, and each coordinate point is connected by a broken line.

[0013] In some embodiments of the above-mentioned precision transposed conductor laser detection system for ultra-high voltage transformers, the abnormal points include raised abnormal points and measured abnormal points. The corresponding moment of the raised abnormal points is the same as the moment when the distance of the protrusion on the conductor surface exceeds the allowable range. The raised abnormal points are displayed in red, and the corresponding moment of the measured abnormal points is the same as the moment when the distance difference measured by the first laser distance sensor on the front side and the second laser distance sensor on the rear side at the same point exceeds the allowable range.

[0014] Beneficial effects of the present invention:

[0015] The laser distance sensor measures the surface of the wire to obtain the data of the raised distance of the wire surface and transmits it to the controller. The controller calculates and processes the data and transmits it to the display and controls the display to display the detection results. The staff can know in real time whether the raised distance of the wire surface exceeds the allowable range through the display. When it exceeds the allowable range, the controller calculates the distance of the wire transmission according to the wire transmission speed obtained by the speed sensor, and records the position of the wire along the axial direction of the wire where the raised distance of the wire surface exceeds the range, which is convenient for the staff to locate and repair. The laser detection system in this embodiment can continuously or intermittently measure the axial and circumferential directions of the wire. When intermittent measurement is adopted, the amount of data is much less than that of the image recognition detection system in the prior art. Therefore, the computing power requirement of the processor in the controller is low, the delay is reduced, and the winding speed and transmission speed of the wire can be increased, thereby improving the detection work efficiency. Compared with the image recognition detection system in the prior art, there is no measurement error caused by factors such as image deformation, ambient light, and color change of the wire surface, so the measurement result is more accurate. It can be seen that the detection system in this embodiment helps to improve the reliability of the detection results and improve work efficiency.

[0016] The measurement results of the two first laser distance sensors are used as a basis for mutual verification, and the detection results of the second laser distance sensor on the rear side and the first laser distance sensor on the front side are also used as a basis for mutual verification. Once the measurement results of the two first laser distance sensors and the second laser distance sensor on the rear side at the same point are inconsistent or the difference exceeds the allowable range, it means that at least one of the three has a fault or failure or the error is too large, and maintenance by staff is required, which further improves the reliability of the measurement results. The first laser distance sensor and the second laser distance sensor can be operated one by one. For example, when making a rough measurement, the second laser distance sensor is disabled and only the first laser distance sensor is used. When making a precise measurement, the first laser distance sensor is disabled and only the second laser distance sensor is used. When making a precise and reliable measurement, the first laser distance sensor and the second laser distance sensor are used at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate exemplary embodiments, features, and aspects of the present application and, together with the description, serve to explain the principles of the present application.

[0018] Figure 1 It is a structural schematic diagram of the case where the precision transposed conductor laser detection system for ultra-high voltage transformers detects conductors in an embodiment of the present application;

[0019] Figure 2 This is a schematic diagram of the structure of the first laser distance sensor in the embodiment of the present application when detecting a wire;

[0020] Figure 3 yes Figure 2 The schematic diagram of the structure after the middle rotating bracket rotates 180 degrees;

[0021] Figure 4 yes Figure 2 The schematic diagram of the structure after the middle rotating bracket rotates 360 degrees;

[0022] Figure 5 is a schematic diagram of the relative position relationship of the first laser distance sensor, the rotating bracket and the wire in the embodiment of the present application;

[0023] Figure 6 It is a schematic diagram of the structure when the first laser distance sensor and the second laser distance sensor detect the wire in the embodiment of the present application;

[0024] Figure 7 yes Figure 6 The schematic diagram of the structure after the middle rotating bracket rotates 180 degrees;

[0025] Figure 8 is a schematic diagram of the relative position relationship between the first laser distance sensor, the second laser distance sensor, the rotating bracket and the wire in the embodiment of the present application;

[0026] Fig. 9 is a schematic diagram of the structure of a display in an embodiment of the present application;

[0027] Fig.10 It is a structural schematic diagram of the connection between the laser distance sensor, display, speed sensor, drive device and controller in the embodiment of the present application.

[0028] Description of reference numerals:

[0029] 100. Fixed bracket; 102. Rotating bracket; 104. Driving device; 106. Speed ​​sensor; 108. Controller; 110. Display; 112. First laser distance sensor; 114. Second laser distance sensor; 116. Driven gear; 118. Driving gear; 120. Rolling bearing; 122. Dynamic list area; 124. Abnormal point density distribution area; 126. Real-time bulge distance display area; 128. Conductor; 130. Paper insulating tape; 132. Parallel output terminal; 134. Conductor traction terminal; 136. Paper insulating tape winding equipment; 138. Copper wire. DETAILED DESCRIPTION

[0030] Various exemplary embodiments, features and aspects of the present application will be described in detail below with reference to the accompanying drawings. The same figure numbers in the accompanying drawings represent elements with the same or similar functions. Although various aspects of the embodiments are shown in the accompanying drawings, the drawings need not be drawn to scale unless otherwise specified. The special word "exemplary" here means "used as an example, embodiment or illustrative". Any embodiment described here as "exemplary" is not necessarily interpreted as being superior to or better than other embodiments. In addition, in order to better illustrate the present application, those skilled in the art should understand that numerous specific details are given in each embodiment below. Without certain specific details, the present application can also be implemented. In some embodiments, methods, means and elements well known to those skilled in the art are not described in detail to highlight the subject matter of the present application.

[0031] Combination Figures 1 to 10As shown, the embodiment of the present application provides a precise transposed conductor laser detection system for a UHV transformer, including a fixed bracket 100, a rotating bracket 102, a laser distance sensor, a driving device 104, a speed sensor 106, a controller 108, and a display 110; the rotating bracket 102 is rotatably connected to the fixed bracket 100, the driving device 104 is transmission-connected to the rotating bracket 102, the laser distance sensor is fixedly connected to the rotating bracket 102, the speed sensor 106 is fixedly connected to the fixed bracket 100, and the speed sensor 106, the driving device 104, the laser distance sensor, and the display 110 are connected to the rotating bracket 102. The devices 110 are respectively connected to the controller 108; the rotating bracket 102 is arranged around the wire 128, and the laser transceiver port of the laser distance sensor is facing the central axis of the wire 128; the speed sensor 106 is used to detect the axial transmission speed of the wire 128, and the controller 108 controls the operation of the driving device 104 and the laser distance sensor according to the axial transmission speed of the wire 128. The driving device 104 is used to drive the rotating bracket 102 to rotate around the wire 128, the laser distance sensor is used to measure the distance of the protrusion on the surface of the wire 128, and the display 110 is used to display the distance of the protrusion on the surface of the wire 128.

[0032] Combination Figure 1As shown, the conductor 128 is transmitted from the parallel output terminal 132 (multiple copper wires 138 are bundled together) to the conductor traction terminal 134 (or the winding input terminal of the conductor 128), passes through the paper insulating tape winding device 136 (winding the paper insulating tape 130 on the conductor 128), and then passes through the center of the rotating bracket 102 after winding the paper insulating tape 130. The driving device 104 drives the rotating bracket 102 to rotate, and the measurement point path of the laser distance sensor on the conductor 128 is in the shape of a spiral line, and the edge of the paper insulating tape 130 on the conductor 128 is also in the shape of a spiral line. Preferably, the rotation direction of the rotating bracket 102 is opposite to the winding direction of the paper insulating tape 130 on the conductor 128, that is, the measurement point path of the laser distance sensor on the conductor 128 and the edge of the paper insulating tape 130 on the conductor 128 are opposite in rotation direction, that is, the measurement point path of the laser distance sensor on the conductor 128 intersects with the edge of the paper insulating tape 130 on the conductor 128. The laser distance sensor measures the surface of the wire 128 to obtain the data of the raised distance of the wire 128 surface and transmits it to the controller 108 (using the PLC controller 108). The controller 108 calculates and processes the data and transmits it to the display 110 and controls the display 110 to display the detection result. The staff can know in real time whether the raised distance of the wire 128 surface exceeds the allowable range through the display 110. When it exceeds the allowable range, the controller 108 calculates the distance of the wire 128 transmission according to the transmission speed of the wire 128 obtained by the speed sensor 106, and records the position of the wire 128 along the axial direction of the wire 128 where the raised distance of the wire 128 surface exceeds the range, so that the staff can locate and repair it. The laser detection system in this embodiment can continuously or intermittently measure the axial and circumferential directions of the wire 128. When intermittent measurement is used, the amount of data is much less than that of the image recognition detection system in the prior art. Therefore, the computing power requirement of the processor in the controller 108 is low, the delay is reduced, and the winding speed and transmission speed of the wire 128 can be increased, thereby improving the detection work efficiency. Compared with the image recognition detection system in the prior art, there is no measurement error caused by factors such as image deformation, ambient light, and color change on the surface of the wire 128, so the measurement result is more accurate. It can be seen that the detection system in this embodiment helps to improve the reliability of the detection results and improve work efficiency.

[0033] In some exemplary implementations of this embodiment, the laser distance sensor includes two first laser distance sensors 112, the first laser distance sensors 112 are arranged along the axial direction of the wire 128, the transmission speed of the wire 128 is v (m / s), the angular velocity of the rotating bracket 102 is w (degrees / s), and the arrangement spacing of the first laser distance sensors 112 is d (m), w=360v / d.

[0034] Combination Figures 2 to 5As shown, every time the rotating bracket 102 rotates one circle, the transmission distance of the wire 128 is just equal to the arrangement spacing of the first laser distance sensor 112. When the measurement point of the first laser distance sensor 112 on the front side is a1, the measurement point of the first laser distance sensor 112 on the rear side is a3. After the rotating bracket 102 rotates one circle, when the measurement point of the first laser distance sensor 112 on the front side is a3, the measurement point of the first laser distance sensor 112 on the rear side is a5. It can be seen that the measurement point path of the first laser distance sensor 112 on the rear side coincides with the measurement point path of the first laser distance sensor 112 on the front side. The measurement results of the two first laser distance sensors 112 can be used as a basis for mutual verification. For example, the measurement results of the two first laser distance sensors 112 at a3 are different, indicating that at least one of the two first laser distance sensors 112 is faulty or ineffective or has a large error, and needs to be maintained by staff. The two first laser distance sensors 112 can also combine the measurement results to reflect the slope of the measurement position. For example, when a1 is greater than a3, it means that the measurement position is high at the front and low at the back. By calculating all the measurement results, the rough undulation state of the surface of the wire 128 can be obtained. Compared with the image detection system in the prior art, it is not necessary to collect, identify, and calculate each point on the surface of the wire 128, which greatly reduces the computing power required for detection, reduces delays, and improves detection work efficiency. In addition, the mutual verification of the two first laser distance sensors 112 further improves the reliability of the detection results.

[0035] In some exemplary implementations of this embodiment, the controller 108 controls the first laser distance sensor 112 to intermittently emit laser light, and the time interval for the first laser distance sensor 112 to emit laser light is t (seconds), t=θ / w, 5≤θ (degrees)≤10.

[0036] The first laser distance sensor 112 intermittently emits laser to measure the surface of the conductor 128, which can further reduce the amount of measurement data. Every time the rotating bracket 102 rotates an angle θ, the first laser distance sensor 112 emits a laser pulse for measurement. The smaller the θ value is, the more measurement data is obtained, and the detection is more comprehensive (the fewer missed detection areas on the surface of the conductor 128).

[0037] Combination Figures 6 to 8As shown, in some exemplary implementations of the present embodiment, the laser distance sensor also includes two second laser distance sensors 114, the second laser distance sensors 114 are arranged along the axial direction of the wire 128, the second laser distance sensor 114 and the first laser distance sensor 112 are respectively located on both sides of the wire 128, the front first laser distance sensor 112 and the front second laser distance sensor 114 are located on the same straight line, the arrangement spacing of the second laser distance sensors 114 is d / 2, and the controller 108 controls the first laser distance sensor 112 and the second laser distance sensor 114 to synchronously and intermittently emit lasers.

[0038] The measurement results of the two first laser distance sensors 112 are used as a basis for mutual verification, and the detection results of the second laser distance sensor 114 on the rear side and the first laser distance sensor 112 on the front side are also used as a basis for mutual verification. Once the measurement results of the two first laser distance sensors 112 and the second laser distance sensor 114 on the rear side are inconsistent at the same point or the difference exceeds the allowable range, it means that at least one of the three has a fault or failure or the error is too large, and maintenance by the staff is required, which further improves the reliability of the measurement results. The first laser distance sensor 112 and the second laser distance sensor 114 can be operated one by one. For example, when making a rough measurement, the second laser distance sensor 114 is disabled and only the first laser distance sensor 112 is used. When making a precise measurement, the first laser distance sensor 112 is disabled and only the second laser distance sensor 114 is used. When making a precise and reliable measurement, the first laser distance sensor 112 and the second laser distance sensor 114 are used at the same time.

[0039] Combination Figure 1 As shown, in some exemplary implementations of the present embodiment, the speed sensor 106 adopts a laser sensor, the laser transceiver port of the speed sensor 106 is directly opposite to the central axis of the wire 128, the speed sensor 106 is located on the front side of the laser distance sensor, the speed sensor 106 detects the edge of the paper insulating tape 130 on the wire 128 and transmits the detection result to the controller 108, and the controller 108 calculates the number of times the edge of the paper insulating tape 130 passes through the speed sensor 106 per unit time to obtain the transmission speed of the wire 128.

[0040] In some exemplary implementations of the present embodiment, the driving device 104 adopts a servo motor, the rotating bracket 102 is in the shape of a ring, the outer side surface of the rotating bracket 102 is fixedly connected to a ring-shaped driven gear 116, and the output shaft of the driving device 104 is fixedly connected to a driving gear 118, and the driving gear 118 is meshed and drivenly connected with the driven gear 116. The shape of the fixed bracket 100 is cylindrical, and the rotating bracket 102 is located on the inner side of the fixed bracket 100. A rolling bearing 120 is provided between the outer side surface of the rotating bracket 102 and the inner side surface of the fixed bracket 100, and the rotating bracket 102 is rotatably connected to the fixed bracket 100 through the rolling bearing 120.

[0041] Combination Fig. 9 As shown, in some exemplary implementations of this embodiment, a dynamic list area 122 is displayed on the display 110 , and the dynamic list area 122 records the current value and the historical value of the protrusion on the surface of the wire 128 .

[0042] In some exemplary implementations of the present embodiment, an abnormal point density distribution area 124 is displayed on the display 110, and a reference time axis is recorded in the abnormal point density distribution area 124. The starting time of the reference time axis is T1 (seconds), and the ending time is T2 (seconds). The end time of the reference time axis is synchronized with the current real-time time, T2-T1≥60 (seconds), and the abnormal points are arranged in time sequence on the reference time axis, and the corresponding time of the abnormal point is the same as the time when the distance of the protrusion on the surface of the conductor 128 exceeds the allowable range.

[0043] In some exemplary implementations of the present embodiment, a real-time protrusion distance display area 126 is displayed on the display 110, and a time-distance coordinate system is recorded in the real-time protrusion distance display area 126. The time-distance coordinate system records the coordinate points of the protrusion distance on the surface of the conductor 128 measured by the laser distance sensor in the last 30 minutes as a function of time, and each coordinate point is connected by a broken line.

[0044] In some exemplary implementations of this embodiment, the abnormal points include raised abnormal points and measured abnormal points. The corresponding time of the raised abnormal points is the same as the time when the distance of the protrusion on the surface of the conductor 128 exceeds the allowable range. The raised abnormal points are displayed in red, and the corresponding time of the measured abnormal points is the same as the time when the distance difference measured by the first laser distance sensor 112 on the front side and the second laser distance sensor 114 on the rear side at the same point exceeds the allowable range.

[0045] It should be noted that “a1, a2, a3, a4, a5, a6, b1, b2, b3, b4, b5, b6” in the accompanying drawings are points measured by the laser distance sensor on the surface of the conductor 128.

[0046] The embodiments of the present application have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A precision transposed conductor laser detection system for ultra-high voltage transformers, characterized in that: It comprises a fixed bracket (100), a rotating bracket (102), a laser distance sensor, a driving device (104), a speed sensor (106), a controller (108), and a display (110); The rotating bracket (102) is rotationally connected to the fixed bracket (100), the driving device (104) is transmission-connected to the rotating bracket (102), the laser distance sensor is fixedly connected to the rotating bracket (102), the speed sensor (106) is fixedly connected to the fixed bracket (100), and the speed sensor (106), the driving device (104), the laser distance sensor, and the display (110) are respectively connected to the controller (108); The rotating bracket (102) is arranged around the wire (128), and the laser transceiver port of the laser distance sensor faces the central axis of the wire (128); The speed sensor (106) is used to detect the axial transmission speed of the wire (128); the controller (108) controls the operation of the drive device (104) and the laser distance sensor according to the axial transmission speed of the wire (128); the drive device (104) is used to drive the rotating bracket (102) to rotate around the wire (128); the laser distance sensor is used to measure the distance of the protrusion on the surface of the wire (128); and the display (110) is used to display the distance of the protrusion on the surface of the wire (128); The laser distance sensor further comprises two second laser distance sensors (114), the second laser distance sensors (114) being arranged along the axial direction of the wire (128), the second laser distance sensors (114) and the first laser distance sensor (112) being respectively located on both sides of the wire (128), the first laser distance sensor (112) on the front side and the second laser distance sensor (114) on the front side being located on the same straight line, the arrangement pitch of the second laser distance sensors (114) being d / 2, and the controller (108) controlling the first laser distance sensor (112) and the second laser distance sensor (114) to synchronously and intermittently emit lasers; The driving device (104) adopts a servo motor, the rotating bracket (102) is in the shape of a ring, the outer side surface of the rotating bracket (102) is fixedly connected to a ring-shaped driven gear (116), the output shaft of the driving device (104) is fixedly connected to a driving gear (118), the driving gear (118) is meshingly connected to the driven gear (116), the fixed bracket (100) is in the shape of a cylinder, the rotating bracket (102) is located on the inner side of the fixed bracket (100), a rolling bearing (120) is provided between the outer side surface of the rotating bracket (102) and the inner side surface of the fixed bracket (100), and the rotating bracket (102) is rotatably connected to the fixed bracket (100) via the rolling bearing (120); The display (110) displays a dynamic list area (122), and the dynamic list area (122) records the current value and historical value of the protrusion on the surface of the wire (128); The display (110) displays an abnormal point density distribution area (124), in which a reference time axis is recorded, the reference time axis starting time is T1 seconds, and ending time is T2 seconds, the ending time of the reference time axis is synchronized with the current real-time time, T2-T1≥60 seconds, the abnormal points are arranged in time sequence on the reference time axis, and the corresponding time of the abnormal point is the same as the time when the distance of the bulge on the surface of the conductor (128) exceeds the allowable range.

2. The laser detection system for transposed conductors for ultra-high voltage transformers according to claim 1 is characterized in that: The laser distance sensor comprises two first laser distance sensors (112), the first laser distance sensors (112) being arranged along the axial direction of a wire (128), the transmission speed of the wire (128) being v meters / second, the angular speed of the rotating bracket (102) being w degrees / second, the arrangement spacing of the first laser distance sensors (112) being d meters, and w=360v / d.

3. The laser detection system for transposed conductors for UHV transformers according to claim 2 is characterized in that: The controller (108) controls the first laser distance sensor (112) to intermittently emit laser light, and the time interval for the first laser distance sensor (112) to emit laser light is t seconds, t=θ / w, 5≤θ degrees≤10.

4. The laser detection system for transposed conductors for UHV transformers according to claim 2 is characterized in that: The speed sensor (106) is a laser sensor. The laser transceiver port of the speed sensor (106) faces the central axis of the wire (128). The speed sensor (106) is located in front of the laser distance sensor. The speed sensor (106) detects the edge of the paper insulating tape (130) on the wire (128) and transmits the detection result to the controller (108). The controller (108) calculates the number of times the edge of the paper insulating tape (130) passes through the speed sensor (106) per unit time to obtain the transmission speed of the wire (128).

5. The precise transposed conductor laser detection system for UHV transformer according to claim 1 is characterized in that: The display (110) displays a real-time protrusion distance display area (126), and the real-time protrusion distance display area (126) records a time-distance coordinate system, in which the coordinate points of the distance of the protrusion on the surface of the conductor (128) measured by the laser distance sensor in the last 30 minutes changing with time are recorded, and each coordinate point is connected by a broken line.

6. The precise transposed conductor laser detection system for UHV transformer according to claim 1 is characterized in that: The abnormal point comprises a protruding abnormal point and a measuring abnormal point. The corresponding time of the protruding abnormal point is the same as the time when the distance of the protrusion on the surface of the conductor (128) exceeds the allowable range. The protruding abnormal point is displayed in red. The corresponding time of the measuring abnormal point is the same as the time when the distance difference measured by the first laser distance sensor (112) on the front side and the second laser distance sensor (114) on the rear side at the same point exceeds the allowable range.

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