Carbon fiber composite core overhead conductor damage location method and system

Abstract

The application provides a carbon fiber composite core overhead conductor damage positioning method and system, wherein the method comprises the following steps: emitting a detection signal from one end of a carbon fiber composite core overhead conductor through a laser signal emitting module; receiving a signal from the other end of the carbon fiber composite core overhead conductor through a laser signal receiving module, and obtaining the received signal; determining a carbon fiber composite core overhead conductor damage detection result based on the detection signal and the received signal; and one optical fiber is arranged in each carbon fiber composite core in the carbon fiber composite core overhead conductor. The carbon fiber composite core overhead conductor damage positioning method of the application realizes rapid and accurate positioning of carbon fiber composite core overhead conductor damage.

Description

Technical Field

[0001] This invention relates to the field of conductor damage technology, and in particular to a method and system for locating damage in carbon fiber composite core overhead conductors. Background Technology

[0002] Carbon fiber composite core overhead conductors contain at least one composite core rod made of carbon fiber and resin matrix, and are made of soft aluminum stranded wire. They are a new type of overhead transmission line conductor with advantages such as light weight, low line loss, and corrosion resistance.

[0003] During the manufacturing process of carbon fiber composite core overhead conductors, micro-damage such as pores, resin deficiency / excess, and cracks can occur in the core rod. These micro-damages create localized weak areas on the conductor. When laying carbon fiber composite core overhead conductors, such as in winding or coiling, these weak areas are prone to brittle fracture under bending moment. Because the outer layer of carbon fiber composite core overhead conductors is made of aluminum wire, traditional damage detection methods for steel-cored aluminum stranded wires are not effective in detecting damage occurring inside the conductor. When the conductors are in operation, the complex external environment can cause varying degrees of impact and damage to the transmission lines, potentially leading to transmission line accidents and significant economic losses.

[0004] Achieving rapid and accurate location of damage to carbon fiber composite core overhead conductors is crucial for enabling quick response to transmission line accidents and reducing losses caused by such damage. Summary of the Invention

[0005] One of the objectives of this invention is to provide a method for locating damage in carbon fiber composite core overhead conductors, enabling rapid and accurate location of damage in these conductors.

[0006] This invention provides a method for locating damage in carbon fiber composite core overhead conductors, comprising:

[0007] A detection signal is emitted from one end of the carbon fiber composite core overhead conductor via a laser signal emission module;

[0008] The laser signal receiving module receives the signal from the other end of the carbon fiber composite core overhead conductor to obtain the received signal.

[0009] Based on the detected and received signals, the damage detection results of the carbon fiber composite core overhead conductor are determined.

[0010] In the carbon fiber composite core overhead conductor, each carbon fiber composite core contains an optical fiber.

[0011] Preferably, the laser signal transmitting module includes:

[0012] The first main body has a first open mouth on one side;

[0013] The first conductor coupling mechanism is disposed on the inner wall of one end of the first opening body near the outer side, and is used to couple with one end of the carbon fiber composite core overhead conductor.

[0014] A laser signal generating unit is located at the end of the first body away from the opening of the first oral cavity, and is used to generate a detection signal;

[0015] At least one signal output optical fiber is set inside the first opening cavity, corresponding one-to-one with the carbon fiber composite core;

[0016] The first coupling mechanism is located inside the first opening cavity and is used to couple the signal output optical fiber with the optical fibers in each carbon fiber composite core.

[0017] The first coupling mechanism includes:

[0018] Two symmetrically arranged guide rails are set on the inner wall of the first opening;

[0019] The bracket is slidably mounted on two guide rails; the signal output optical fiber is vertically fixed on the bracket.

[0020] Preferably, when the number of signal output optical fibers is not uniform, the support includes: a rotating platform, the fixed end of the rotating platform being slidably connected to the guide rail; the signal output optical fibers being vertically fixed on the rotating end of the rotating platform; and multiple image acquisition units being provided on the rotating end.

[0021] The laser signal transmitting module also includes: a control unit, a trigger switch, and buttons;

[0022] The buttons are located on the outer periphery of the first main body and are connected to the control unit;

[0023] The trigger switch is located below the wire connection mechanism;

[0024] When the conductor coupling mechanism is coupled to one end of the carbon fiber composite core overhead conductor, it sends a trigger signal to the control unit.

[0025] When the control unit receives a button press within a preset time interval after receiving a trigger signal, the control unit acquires an image of the end face of the carbon fiber composite core overhead conductor through the image acquisition unit.

[0026] Based on the end-face image, the control unit controls the rotation of the rotating platform to couple each signal output fiber with the corresponding fiber in the carbon fiber composite core.

[0027] Preferably, the laser signal receiving module includes:

[0028] The second main body has a second open cavity on one side;

[0029] The second conductor coupling mechanism is located on the inner wall of one end of the second opening body near the outer side, and is used to couple with the other end of the carbon fiber composite core overhead conductor.

[0030] A laser signal receiving unit is located at one end of the second main body away from the opening of the second oral cavity, and is used to acquire the received signal;

[0031] At least one signal incident optical fiber is set inside the second opening cavity, corresponding one-to-one with the carbon fiber composite core;

[0032] The coupling mechanism, located inside the second opening, is used to couple the signal incident optical fiber with the optical fibers in each carbon fiber composite core.

[0033] Preferably, the damage detection results of carbon fiber composite core overhead conductors are determined based on the detected signals and received signals, including:

[0034] Obtain the length between the two ends of the carbon fiber composite core overhead conductor;

[0035] Based on the length, query the preset signal attenuation table to determine the standard attenuation value;

[0036] The detection attenuation value is determined based on the detected signal and the received signal;

[0037] When the difference between the detected attenuation value and the standard attenuation value is less than or equal to the preset threshold, it is determined that the carbon fiber composite core overhead conductor is undamaged; otherwise, the carbon fiber composite core overhead conductor is damaged.

[0038] The present invention also provides a damage location system for carbon fiber composite core overhead conductors, comprising:

[0039] The detection signal transmission module is used to transmit a detection signal from one end of the carbon fiber composite core overhead conductor via the laser signal transmission module.

[0040] A signal receiving module is used to receive signals from the other end of the carbon fiber composite core overhead conductor through a laser signal receiving module, and to acquire the received signals.

[0041] The analysis module is used to determine the damage detection results of carbon fiber composite core overhead conductors based on the detected and received signals.

[0042] In the carbon fiber composite core overhead conductor, each carbon fiber composite core contains an optical fiber.

[0043] Preferably, the laser signal transmitting module includes:

[0044] The first main body has a first open mouth on one side;

[0045] The first conductor coupling mechanism is disposed on the inner wall of one end of the first opening body near the outer side, and is used to couple with one end of the carbon fiber composite core overhead conductor.

[0046] A laser signal generating unit is located at the end of the first body away from the opening of the first oral cavity, and is used to generate a detection signal;

[0047] At least one signal output optical fiber is set inside the first opening cavity, corresponding one-to-one with the carbon fiber composite core;

[0048] The first coupling mechanism is located inside the first opening cavity and is used to couple the signal output optical fiber with the optical fibers in each carbon fiber composite core.

[0049] The first coupling mechanism includes:

[0050] Two symmetrically arranged guide rails are set on the inner wall of the first opening;

[0051] The bracket is slidably mounted on two guide rails; the signal output optical fiber is vertically fixed on the bracket.

[0052] Preferably, when the number of signal output optical fibers is not uniform, the support includes: a rotating platform, the fixed end of the rotating platform being slidably connected to the guide rail; the signal output optical fibers being vertically fixed on the rotating end of the rotating platform; and multiple image acquisition units being provided on the rotating end.

[0053] The laser signal transmitting module also includes: a control unit, a trigger switch, and buttons;

[0054] The buttons are located on the outer periphery of the first main body and are connected to the control unit;

[0055] The trigger switch is located below the wire connection mechanism;

[0056] When the conductor coupling mechanism is coupled to one end of the carbon fiber composite core overhead conductor, it sends a trigger signal to the control unit.

[0057] When the control unit receives a button press within a preset time interval after receiving a trigger signal, the control unit acquires an image of the end face of the carbon fiber composite core overhead conductor through the image acquisition unit.

[0058] Based on the end-face image, the control unit controls the rotation of the rotating platform to couple each signal output fiber with the corresponding fiber in the carbon fiber composite core.

[0059] Preferably, the laser signal receiving module includes:

[0060] The second main body has a second open cavity on one side;

[0061] The second conductor coupling mechanism is located on the inner wall of one end of the second opening body near the outer side, and is used to couple with the other end of the carbon fiber composite core overhead conductor.

[0062] A laser signal receiving unit is located at one end of the second main body away from the opening of the second oral cavity, and is used to acquire the received signal;

[0063] At least one signal incident optical fiber is set inside the second opening cavity, corresponding one-to-one with the carbon fiber composite core;

[0064] The coupling mechanism, located inside the second opening, is used to couple the signal incident optical fiber with the optical fibers in each carbon fiber composite core.

[0065] Preferably, the analysis module determines the damage detection results of the carbon fiber composite core overhead conductor based on the detected signal and the received signal, and performs the following operations:

[0066] Obtain the length between the two ends of the carbon fiber composite core overhead conductor;

[0067] Based on the length, query the preset signal attenuation table to determine the standard attenuation value;

[0068] The detection attenuation value is determined based on the detected signal and the received signal;

[0069] When the difference between the detected attenuation value and the standard attenuation value is less than or equal to the preset threshold, it is determined that the carbon fiber composite core overhead conductor is undamaged; otherwise, the carbon fiber composite core overhead conductor is damaged.

[0070] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the written description, claims, and drawings.

[0071] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0072] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0073] Figure 1 This is a schematic diagram of a method for locating damage to a carbon fiber composite core overhead conductor according to an embodiment of the present invention;

[0074] Figure 2 This is a schematic diagram of a laser signal transmitting module according to an embodiment of the present invention;

[0075] Figure 3 This is a schematic diagram of another laser signal emitting module in an embodiment of the present invention;

[0076] Figure 4 This is a schematic diagram of a line-walking device according to an embodiment of the present invention;

[0077] Figure 5 This is a schematic diagram of a carbon fiber composite core overhead conductor damage location system according to an embodiment of the present invention. Detailed Implementation

[0078] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0079] This invention provides a method for locating damage in carbon fiber composite core overhead conductors, such as... Figure 1 As shown, it includes:

[0080] Step S1: Emitter a detection signal from one end of the carbon fiber composite core overhead conductor using a laser signal emitting module;

[0081] Step S2: Receive the signal from the other end of the carbon fiber composite core overhead conductor using the laser signal receiving module to obtain the received signal;

[0082] Step S3: Determine the damage detection results of the carbon fiber composite core overhead conductor based on the detected and received signals;

[0083] In the carbon fiber composite core overhead conductor, each carbon fiber composite core contains an optical fiber.

[0084] The working principle and beneficial effects of the above technical solution are as follows:

[0085] Damage detection can be performed using the method provided in this embodiment, either before or after the carbon fiber composite core overhead conductor is laid. The laser signal emitting module emits a detection signal from one end of the carbon fiber composite core overhead conductor. The detection signal is transmitted to the other end by an optical fiber installed in the carbon fiber composite core. Then, the laser signal receiving module receives the signal from the other end of the carbon fiber composite core overhead conductor and obtains the received signal. Based on whether the received signal is received and the transmission attenuation between the received signal and the detection signal, it can be determined whether the optical fiber is broken in the middle. Since the optical fiber is installed in the middle of the composite core, when the optical fiber is broken, it indicates that the composite core at the corresponding position has also broken.

[0086] The present invention provides a method for locating damage in carbon fiber composite core overhead conductors. This method involves placing an optical fiber within the carbon fiber composite core overhead conductor, then transmitting a laser from one end and receiving it at the other. When no signal is received, it indicates a break in the middle of the carbon fiber composite core overhead conductor. Furthermore, smaller cracks can be identified by determining the transmission attenuation, thus enabling the detection of damage to the carbon fiber composite core overhead conductor.

[0087] In one embodiment, such as Figure 2 As shown, the laser signal emitting module includes:

[0088] The first main body 11 has a first open mouth body 12 on one side;

[0089] The first conductor joining mechanism 13 is disposed on the inner wall of one end of the first open mouth body 12 near the outer side, and is used to join one end of the carbon fiber composite core overhead conductor.

[0090] The laser signal generating unit 14 is disposed at one end of the first body 11 away from the opening of the first oral cavity 12, and is used to generate a detection signal;

[0091] At least one signal output fiber 15 is disposed inside the first opening cavity 12, corresponding one-to-one with the carbon fiber composite core;

[0092] The first coupling mechanism 16 is disposed inside the first opening cavity 12 and is used to couple the signal output optical fiber with the optical fiber in each carbon fiber composite core.

[0093] The first coupling mechanism 16 includes:

[0094] Two symmetrically arranged guide rails 161 are set on the inner wall of the first opening body 12;

[0095] The bracket 162 is slidably mounted on two guide rails 161; the signal output fiber 15 is vertically fixed on the bracket.

[0096] The working principle and beneficial effects of the above technical solution are as follows:

[0097] One end of the wire is inserted into the first opening 12 of the first main body 11; the fixing body at one end of the guide rail 161 abuts against one end of the wire to prevent the wire from protruding too deeply and affecting the coupling action between the signal output fiber 15 and the carbon fiber composite core; the first wire coupling mechanism 13 performs a limiting and locking operation on the wire after it is inserted into the first opening 12 to prevent displacement between the wire and the first main body 11, which would affect the coupling between the output fiber 15 and the carbon fiber composite core; the first wire coupling mechanism 13 can be configured as multiple telescopic bodies, set on the inner wall, which cooperate with the positioning holes set on the outer periphery of the wire near the end face to achieve the limiting and locking operation; after the limiting and locking, the bracket of the first coupling mechanism 16 slides on the guide rail, thereby coupling the signal output fiber 15 and the carbon fiber composite core accordingly. When the laser signal transmitting module and the laser signal receiving module are both set up, the laser signal generating unit 14 emits a detection signal and then couples it into the fiber in the carbon fiber composite core through the signal output fiber 15 for detection.

[0098] In one embodiment, when the number of signal output optical fibers is not one, the support includes: a rotating platform, the fixed end of the rotating platform being slidably connected to the guide rail; the signal output optical fibers being vertically fixed on the rotating end of the rotating platform; and multiple image acquisition units being provided on the rotating end.

[0099] like Figure 3 As shown, for multi-core conductors, multiple signal output fibers are also required. In order to achieve coupling, the support is set as a rotating platform to facilitate the coupling of the signal output fiber with the fibers in each carbon fiber composite core of the conductor. To facilitate coupling, an image acquisition unit acquires internal images, analyzes the acquired images to determine the position of the fiber corresponding to each carbon fiber composite core, and then controls the rotation of the rotating platform to achieve coupling.

[0100] To enable operators to control the laser signal emitting module, in one embodiment, the laser signal emitting module further includes: a control unit, a trigger switch, and buttons;

[0101] The buttons are located on the outer periphery of the first main body and are connected to the control unit;

[0102] The trigger switch is located below the wire connection mechanism;

[0103] When the conductor coupling mechanism is coupled to one end of the carbon fiber composite core overhead conductor, it sends a trigger signal to the control unit.

[0104] When the control unit receives a button press within a preset time interval after receiving a trigger signal, the control unit acquires an image of the end face of the carbon fiber composite core overhead conductor through the image acquisition unit.

[0105] Based on the end-face image, the control unit controls the rotation of the rotating platform to couple each signal output fiber with the corresponding fiber in the carbon fiber composite core.

[0106] The working principle and beneficial effects of the above technical solution are as follows:

[0107] The trigger switch can be a piezoelectric signal switch. When the wire coupling mechanism engages with the wire, it triggers the trigger switch. After triggering, the button can be pressed to form control. The control unit controls the rotation platform to rotate based on the end face image, so that each signal output fiber is coupled with the fiber in the corresponding carbon fiber composite core. Specifically, this includes: performing contour recognition on the image to determine the contour of each carbon fiber composite core and the contour of the fiber in the carbon composite core; taking the center of the contour of each fiber in the carbon fiber composite core and marking it as the first point; mapping it to a preset control plane; obtaining the current state of the coupling mechanism (the position of the bracket on the guide rail, the current rotation angle of the rotating platform); based on the current state, determining the position of each signal output fiber and mapping it to the control plane to determine the second point; determining the average value of the shortest distance between each first point and the adjacent second point in the control plane; determining the rotation angle based on the average value and a preset angle lookup table; and controlling the rotation platform to move based on the rotation angle. The average value of the shortest distance in the angle lookup table is associated with the rotation angle in a one-to-one correspondence.

[0108] In one embodiment, the laser signal receiving module includes:

[0109] The second main body has a second open cavity on one side;

[0110] The second conductor coupling mechanism is located on the inner wall of one end of the second opening body near the outer side, and is used to couple with the other end of the carbon fiber composite core overhead conductor.

[0111] A laser signal receiving unit is located at one end of the second main body away from the opening of the second oral cavity, and is used to acquire the received signal;

[0112] At least one signal incident optical fiber is set inside the second opening cavity, corresponding one-to-one with the carbon fiber composite core;

[0113] The coupling mechanism, located inside the second opening, is used to couple the signal incident optical fiber with the optical fibers in each carbon fiber composite core.

[0114] The laser signal receiving module provided in this embodiment is structurally similar to other laser signal receiving modules. It uses a second conductor coupling mechanism to lock the conductor in place, and a coupling mechanism to couple the signal incident fiber to the fiber in the carbon fiber composite core of the conductor. The signal is then detected in the fiber in the carbon fiber composite core before being received by the laser signal receiving unit. For multi-core cables, the coupling mechanism's support is also a rotating platform, with multiple image acquisition modules mounted on it. A display is located on the outer periphery of the second main body, showing images from the image acquisition modules and providing buttons for controlling the rotating platform and guide rails.

[0115] To achieve crack detection targeting signal attenuation, in one embodiment, the damage detection result of the carbon fiber composite core overhead conductor is determined based on the detected signal and the received signal, including:

[0116] Obtain the length between the two ends of the carbon fiber composite core overhead conductor;

[0117] Based on the length, a preset signal attenuation table is consulted to determine the standard attenuation value; the attenuation of a signal is related to the length it travels, and the longer the length, the greater the standard attenuation value; the preset signal attenuation table allows for quick lookup of the corresponding standard attenuation value based on the length.

[0118] The detection attenuation value is determined based on the detected signal and the received signal;

[0119] When the difference between the detected attenuation value and the standard attenuation value is less than or equal to the preset threshold, it is determined that the carbon fiber composite core overhead conductor is undamaged; otherwise, the carbon fiber composite core overhead conductor is damaged.

[0120] In one embodiment, the method for locating damage to carbon fiber composite core overhead conductors further includes:

[0121] When conductor damage is determined, the line-tracing device is mounted on the conductor and dragged from one end to the other; during this process, the location of the damage is determined based on the detection and received signals.

[0122] Among them, such as Figure 4 As shown, the line traveling device includes: a C-shaped body 22, fixing rings 23 disposed at both ends of the C-shaped body 22, a contact body 24 disposed in the middle of the C-shaped body 22, and an arc-shaped body 25 disposed in the middle of the C-shaped body 22; the fixing rings 23 are used to be sleeved on the outer periphery of the conductor; the shortest height difference between the top of the contact body 24 and the center of the two fixing rings 23 is between the radius of the conductor and 0.

[0123] The line-tracing device is used in conjunction with a laser signal transmitting module and a laser signal receiving module. Generally, when damage to the conductor is confirmed by the laser signal transmitting and receiving modules, and the exact location of the damage needs to be determined, the line-tracing device is mounted on the conductor and then dragged. An ear-like structure is formed between the arc-shaped body 25 and the C-shaped body 22. When the C-shaped body 22 is fixed to the conductor by a fixing ring 23, workers can drag the line-tracing device along the conductor by threading a rope through the ear. During movement, the contact body applies a radial force to the conductor. When dragging the device over a crack in the conductor, it causes changes in the crack, resulting in changes in signal attenuation. By monitoring the signal from the laser signal monitoring module, it is determined whether the movement of the line-tracing device changes, thus pinpointing the crack's exact location on the conductor. Furthermore, for locations where the laser signal receiving module cannot receive a signal when the crack is large, a pressure sensor can be installed at the end of the contact body. When passing over a large crack, the pressure sensor reading will fluctuate significantly, thus achieving location. The large fluctuation can be detected by setting a pressure threshold. The fixing ring includes a ring body and multiple ball bearings arranged within the inner ring.

[0124] This invention also provides a damage location system for carbon fiber composite core overhead conductors, such as... Figure 5 As shown, it includes:

[0125] The detection signal transmitting module 1 is used to transmit a detection signal from one end of the carbon fiber composite core overhead conductor through the laser signal transmitting module;

[0126] The signal receiving module 2 is used to receive signals from the other end of the carbon fiber composite core overhead conductor through the laser signal receiving module, and to acquire the received signals.

[0127] Analysis module 3 is used to determine the damage detection results of carbon fiber composite core overhead conductors based on the detected and received signals.

[0128] In the carbon fiber composite core overhead conductor, each carbon fiber composite core contains an optical fiber.

[0129] The laser signal transmitting module includes:

[0130] The first main body has a first open mouth on one side;

[0131] The first conductor coupling mechanism is disposed on the inner wall of one end of the first opening body near the outer side, and is used to couple with one end of the carbon fiber composite core overhead conductor.

[0132] A laser signal generating unit is located at the end of the first body away from the opening of the first oral cavity, and is used to generate a detection signal;

[0133] At least one signal output optical fiber is set inside the first opening cavity, corresponding one-to-one with the carbon fiber composite core;

[0134] The first coupling mechanism is located inside the first opening cavity and is used to couple the signal output optical fiber with the optical fibers in each carbon fiber composite core.

[0135] The first coupling mechanism includes:

[0136] Two symmetrically arranged guide rails are set on the inner wall of the first opening;

[0137] The bracket is slidably mounted on two guide rails; the signal output optical fiber is vertically fixed on the bracket.

[0138] When the number of signal output optical fibers is not uniform, the support includes: a rotating platform, the fixed end of the rotating platform being slidably connected to the guide rail; the signal output optical fibers being vertically fixed on the rotating end of the rotating platform; and multiple image acquisition units being installed on the rotating end.

[0139] The laser signal transmitting module also includes: a control unit, a trigger switch, and buttons;

[0140] The buttons are located on the outer periphery of the first main body and are connected to the control unit;

[0141] The trigger switch is located below the wire connection mechanism;

[0142] When the conductor coupling mechanism is coupled to one end of the carbon fiber composite core overhead conductor, it sends a trigger signal to the control unit.

[0143] When the control unit receives a button press within a preset time interval after receiving a trigger signal, the control unit acquires an image of the end face of the carbon fiber composite core overhead conductor through the image acquisition unit.

[0144] Based on the end-face image, the control unit controls the rotation of the rotating platform to couple each signal output fiber with the corresponding fiber in the carbon fiber composite core.

[0145] The laser signal receiving module includes:

[0146] The second main body has a second open cavity on one side;

[0147] The second conductor coupling mechanism is located on the inner wall of one end of the second opening body near the outer side, and is used to couple with the other end of the carbon fiber composite core overhead conductor.

[0148] A laser signal receiving unit is located at one end of the second main body away from the opening of the second oral cavity, and is used to acquire the received signal;

[0149] At least one signal incident optical fiber is set inside the second opening cavity, corresponding one-to-one with the carbon fiber composite core;

[0150] The coupling mechanism, located inside the second opening, is used to couple the signal incident optical fiber with the optical fibers in each carbon fiber composite core.

[0151] Among them, analysis module 3 determines the damage detection results of carbon fiber composite core overhead conductors based on the detected and received signals, and performs the following operations:

[0152] Obtain the length between the two ends of the carbon fiber composite core overhead conductor;

[0153] Based on the length, query the preset signal attenuation table to determine the standard attenuation value;

[0154] The detection attenuation value is determined based on the detected signal and the received signal;

[0155] When the difference between the detected attenuation value and the standard attenuation value is less than or equal to the preset threshold, it is determined that the carbon fiber composite core overhead conductor is undamaged; otherwise, the carbon fiber composite core overhead conductor is damaged.

[0156] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A method for locating damage in carbon fiber composite core overhead conductors, characterized in that, include: A detection signal is emitted from one end of the carbon fiber composite core overhead conductor via a laser signal emission module; The laser signal receiving module receives the signal from the other end of the carbon fiber composite core overhead conductor to obtain the received signal. Based on the detected signal and the received signal, the damage detection result of the carbon fiber composite core overhead conductor is determined; In this case, each carbon fiber composite core of the overhead conductor is provided with an optical fiber. The laser signal emitting module includes: The first main body has a first open mouth on one side; The first conductor joining mechanism is disposed on the inner wall of one end of the first opening body near the outer side, and is used to join one end of the carbon fiber composite core overhead conductor. A laser signal generating unit is disposed at one end of the first body away from the opening of the first oral cavity, and is used to generate a detection signal; At least one signal output optical fiber is disposed in the first opening cavity, corresponding one-to-one with the carbon fiber composite core; A first coupling mechanism is disposed inside the first opening cavity and is used to couple the signal output optical fiber with the optical fibers in each carbon fiber composite core. The first coupling mechanism includes: Two symmetrically arranged guide rails are set on the inner wall of the first opening; The bracket is slidably mounted on the two guide rails; the signal output optical fiber is vertically fixed on the bracket. When the number of signal output optical fibers is not one, the support includes: a rotating platform, the fixed end of the rotating platform being slidably connected to the guide rail; the signal output optical fibers being vertically fixed on the rotating end of the rotating platform; and multiple image acquisition units being provided on the rotating end. The laser signal emitting module also includes: a control unit, a trigger switch, and buttons; The button is located on the outer periphery of the first main body and is connected to the control unit; The trigger switch is located below the wire connection mechanism; When the conductor joining mechanism is joined to one end of the carbon fiber composite core overhead conductor, it sends a trigger signal to the control unit. When the control unit receives the button being pressed within a preset time interval after receiving the trigger signal, the control unit acquires an end face image of the carbon fiber composite core overhead conductor through the image acquisition unit. Based on the end face image, the control unit controls the rotation platform to rotate, so that each of the signal output optical fibers is coupled to the optical fiber in the corresponding carbon fiber composite core. Specifically, the process includes: performing contour recognition on the end face image to determine the contours of each carbon fiber composite core and the optical fibers within the carbon fiber composite core; taking the center of the contour of each optical fiber within the carbon fiber composite core and marking it as a first point; mapping it onto a preset control plane; obtaining the current state of the first coupling mechanism, including the position of the support on the guide rail and the current rotation angle of the rotating platform; based on the current state, determining the position of each signal output optical fiber and mapping it onto the control plane to determine a second point; determining the average value of the shortest distance between each first point and the adjacent second point in the control plane; determining the rotation angle based on the average value and a preset angle lookup table; and controlling the rotation platform to move based on the determined rotation angle; wherein the average value of the shortest distance in the angle lookup table is associated with the rotation angle in a one-to-one correspondence.

2. The method for locating damage to carbon fiber composite core overhead conductors as described in claim 1, characterized in that, The laser signal receiving module includes: The second main body has a second open cavity on one side; The second conductor joining mechanism is disposed on the inner wall of one end of the second opening body near the outer side, and is used to join with the other end of the carbon fiber composite core overhead conductor. A laser signal receiving unit is disposed at one end of the second main body away from the opening of the second oral cavity, and is used to acquire received signals; At least one signal incident optical fiber is disposed in the second opening cavity, corresponding one-to-one with the carbon fiber composite core; A coupling mechanism, disposed within the second opening cavity, is used to couple the signal incident optical fiber with the optical fibers in each carbon fiber composite core.

3. The method for locating damage to carbon fiber composite core overhead conductors as described in claim 1, characterized in that, The determination of the damage detection result of the carbon fiber composite core overhead conductor based on the detected signal and the received signal includes: Obtain the length between the two ends of the carbon fiber composite core overhead conductor; Based on the length, a preset signal attenuation table is consulted to determine the standard attenuation value; Based on the detected signal and the received signal, a detection attenuation value is determined; When the difference between the detected attenuation value and the standard attenuation value is less than or equal to a preset threshold, it is determined that the carbon fiber composite core overhead conductor is undamaged; otherwise, the carbon fiber composite core overhead conductor is damaged.

4. A damage location system for carbon fiber composite core overhead conductors, employing the method described in any one of claims 1-3, characterized in that, include: The detection signal transmission module is used to transmit a detection signal from one end of the carbon fiber composite core overhead conductor via the laser signal transmission module. A signal receiving module is used to receive signals from the other end of the carbon fiber composite core overhead conductor through a laser signal receiving module, and to acquire the received signals. The analysis module is used to determine the damage detection results of the carbon fiber composite core overhead conductor based on the detected signal and the received signal. In this case, each carbon fiber composite core of the overhead conductor is equipped with an optical fiber.

5. The carbon fiber composite core overhead conductor damage location system as described in claim 4, characterized in that, The laser signal emitting module includes: The first main body has a first open mouth on one side; The first conductor joining mechanism is disposed on the inner wall of one end of the first opening body near the outer side, and is used to join one end of the carbon fiber composite core overhead conductor. A laser signal generating unit is disposed at one end of the first body away from the opening of the first oral cavity, and is used to generate a detection signal; At least one signal output optical fiber is disposed in the first opening cavity, corresponding one-to-one with the carbon fiber composite core; A first coupling mechanism is disposed inside the first opening cavity and is used to couple the signal output optical fiber with the optical fibers in each carbon fiber composite core. The first coupling mechanism includes: Two symmetrically arranged guide rails are set on the inner wall of the first opening; The bracket is slidably mounted on the two guide rails; the signal output optical fiber is vertically fixed on the bracket.

6. The carbon fiber composite core overhead conductor damage location system as described in claim 5, characterized in that, When the number of signal output optical fibers is not one, the support includes: a rotating platform, the fixed end of the rotating platform being slidably connected to the guide rail; the signal output optical fibers are vertically fixed on the rotating end of the rotating platform; and multiple image acquisition units are provided on the rotating end. The laser signal emitting module also includes: a control unit, a trigger switch, and buttons; The button is located on the outer periphery of the first main body and is connected to the control unit; The trigger switch is located below the wire connection mechanism; When the conductor joining mechanism is joined to one end of the carbon fiber composite core overhead conductor, it sends a trigger signal to the control unit. When the control unit receives the button being pressed within a preset time interval after receiving the trigger signal, the control unit acquires an end face image of the carbon fiber composite core overhead conductor through the image acquisition unit. Based on the end face image, the control unit controls the rotation platform to rotate, so that each of the signal output optical fibers is coupled to the optical fiber in the corresponding carbon fiber composite core.

7. The carbon fiber composite core overhead conductor damage location system as described in claim 4, characterized in that, The laser signal receiving module includes: The second main body has a second open cavity on one side; The second conductor joining mechanism is disposed on the inner wall of one end of the second opening body near the outer side, and is used to join with the other end of the carbon fiber composite core overhead conductor. A laser signal receiving unit is disposed at one end of the second main body away from the opening of the second oral cavity, and is used to acquire received signals; At least one signal incident optical fiber is disposed in the second opening cavity, corresponding one-to-one with the carbon fiber composite core; A coupling mechanism, disposed within the second opening cavity, is used to couple the signal incident optical fiber with the optical fibers in each carbon fiber composite core.

8. The carbon fiber composite core overhead conductor damage location system as described in claim 4, characterized in that, Based on the detected signal and the received signal, the analysis module determines the damage detection result of the carbon fiber composite core overhead conductor and performs the following operations: Obtain the length between the two ends of the carbon fiber composite core overhead conductor; Based on the length, a preset signal attenuation table is consulted to determine the standard attenuation value; Based on the detected signal and the received signal, a detection attenuation value is determined; When the difference between the detected attenuation value and the standard attenuation value is less than or equal to a preset threshold, it is determined that the carbon fiber composite core overhead conductor is undamaged. Otherwise, the carbon fiber composite core overhead conductor will be damaged.

Images