CN114200252A - Cable fault detection device - Google Patents

Cable fault detection device Download PDF

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Publication number
CN114200252A
CN114200252A CN202111634732.2A CN202111634732A CN114200252A CN 114200252 A CN114200252 A CN 114200252A CN 202111634732 A CN202111634732 A CN 202111634732A CN 114200252 A CN114200252 A CN 114200252A
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CN
China
Prior art keywords
coil
cable
supporting member
annular supporting
winding
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Pending
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CN202111634732.2A
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Chinese (zh)
Inventor
韩叶祥
王宏飞
姜明武
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Suzhou Guangge Technology Co Ltd
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Suzhou Guangge Technology Co Ltd
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Priority to CN202111634732.2A priority Critical patent/CN114200252A/en
Publication of CN114200252A publication Critical patent/CN114200252A/en
Pending legal-status Critical Current

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/08—Locating faults in cables, transmission lines, or networks
    • G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
    • G01R31/083—Locating faults in cables, transmission lines, or networks according to type of conductors in cables, e.g. underground
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S10/00—Systems supporting electrical power generation, transmission or distribution
    • Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
    • Y04S10/52—Outage or fault management, e.g. fault detection or location

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Locating Faults (AREA)

Abstract

The embodiment of the present disclosure relates to a cable fault detection device, including: one end of the first coil is electrically connected with the signal acquisition unit, and the other end of the first coil is arranged on the outer layer of the cable body in a winding manner; the one end of second coil with the other end electric connection of first coil, the other end winding of second coil sets up in the skin of ground connection cable, warp outer, with signal acquisition unit electric connection, the ground connection cable is the sheath ground connection part of cable body when the terminal separation. By adopting the device, the sheath current in the cable body monitored by the coil and the current generated by the grounding cable can be mutually offset to obtain the transmission current of the cable core, so that whether the cable breaks down or not can be safely and accurately judged directly according to the size of the transmission current.

Description

Cable fault detection device
Technical Field
The embodiment of the disclosure relates to the technical field of cables, in particular to a cable fault detection device.
Background
Along with the promotion of high tension cable rate of utilization and total amount, the fortune dimension volume of cable also increases correspondingly, urgently needs effectual detection means to carry out early warning and location to the hidden danger and the trouble of cable. In the related art, the cable body is passed through the coil sensor, and then the sheath grounding wire of the cable is passed through the coil sensor in the opposite direction, so that the sheath current on the body and the sheath current on the grounding wire are fed into and discharged from the coil sensor at the same time, and the sheath current are offset with each other. The inner diameter of the coil sensor is relatively large due to the simultaneous penetration of the body and the sheath, for example, in order to adapt to most of the outer diameter of the 220kV cable, the inner diameter of the sensor is required to be about 240 mm. Therefore, the size of the sensor is large, and the manufacturing cost is high.
In other related technologies, when a cable terminal separates a cable core and a sheath grounding wire of a cable, a coil sensor is mounted on the cable core, and the mounting space for the cable core to be connected with the cable is limited, so that the coil sensor is too close to an insulated terminal of the cable terminal, which often causes danger; the coil sensor is arranged on the grounding wire, and due to the insulating joint of the high-voltage cable, the protective layer of the cable is discontinuous (direct grounding, protective grounding and cross interconnection grounding can occur respectively), and the like, the attenuation of signals on the grounding protective layer is large, and fault traveling wave signals cannot be effectively detected.
Disclosure of Invention
In view of the above, it is necessary to provide a cable fault detection device capable of measuring a cable fault safely and accurately at a low cost.
In a first aspect, an embodiment of the present disclosure provides a cable fault detection apparatus, including:
one end of the first coil is electrically connected with the signal acquisition unit, and the other end of the first coil is arranged on the outer layer of the cable body in a winding manner;
the one end of second coil with the other end electric connection of first coil, the other end winding of second coil sets up in the skin of ground connection cable, warp outer, with signal acquisition unit electric connection, the ground connection cable is the sheath ground connection part of cable body when the terminal separation.
In one embodiment, the cable fault detection device further includes a first annular supporting member, the first annular supporting member is sleeved on the outer layer of the cable body, and after the other end of the first coil winds around the first annular supporting member in a spiral manner in a direction opposite to the circumferential direction after winding around a circle from a preset initial position of the first annular supporting member in the circumferential direction of the first annular supporting member, the first annular supporting member returns to the preset initial position.
In one embodiment, the cable fault detection apparatus further includes a second annular supporting member, the second annular supporting member is sleeved on the outer layer of the ground cable, and after the other end of the second coil winds around the second annular supporting member in a direction opposite to the circumferential direction after winding around a circle from a preset initial position of the second annular supporting member in the circumferential direction of the second annular supporting member, the second coil winds around the second annular supporting member in a spiral manner to return to the preset initial position.
In one embodiment, the other end of the first coil is electrically connected to one end of the second coil through the first conductor of the second cable, and the other end of the second coil is electrically connected to the second conductor of the second cable.
In one embodiment, the other end of the second coil is electrically connected to the signal acquisition unit through the second conductor of the second cable and the first conductor of the first cable, and one end of the first coil is electrically connected to the signal acquisition unit through the first conductor of the first cable.
In one embodiment, the length of the first cable is greater than a first preset value, and the length of the second cable is greater than a second preset value.
In one embodiment, the first cable and the second cable are high frequency coaxial cables.
In one embodiment, the mutual inductance of the first coil is the same as the mutual inductance of the second coil.
In one embodiment, the number of turns of the first coil and the second coil, the cross-sectional area of the coil, and the inner radius of the coil satisfy the following formula:
N1×S1/R1＝N2×S2/R2. Wherein N is1Is the number of turns of the first coil, N2Number of turns of winding of said second coil, S1Winding the first coilCross-sectional area of winding surface, S2Is the cross-sectional area of the winding surface of the second coil, R1Is the inner radius, R, of the first coil after winding2The inner radius of the second coil after winding is completed.
In one embodiment, the signal acquisition unit is configured to convert the acquired signal into a transmission current of the cable, and send the fault information when the transmission current is greater than a preset threshold.
In a second aspect, an embodiment of the present disclosure further provides a system for detecting a cable fault, including:
a cable body;
the device for detecting the cable fault in any device in the above-disclosed embodiments.
According to the detection device for the cable faults, the first coil is arranged on the cable body, the second coil is arranged on the grounding cable, the first coil is connected with the second coil, the sheath current in the cable body monitored by the coils and the current generated in the grounding cable can be mutually offset, the transmission current of a cable core is obtained, and whether the cable has faults or not can be safely and accurately judged according to the size of the transmission current.
Drawings
FIG. 1 is a schematic diagram of a cable fault detection apparatus according to one embodiment;
fig. 2 is a schematic structural diagram of a cable fault detection device in one embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure more clearly understood, the embodiments of the present disclosure are described in further detail below with reference to the accompanying drawings and the embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the embodiments of the disclosure and that no limitation to the embodiments of the disclosure is intended.
In one embodiment, as shown in fig. 1, there is provided a cable fault detection apparatus including:
one end of the first coil is electrically connected with the signal acquisition unit, and the other end of the first coil is arranged on the outer layer of the cable body in a winding manner;
the cable body 101 includes a cable core 103 and a sheath 102, and the sheath 102 is a sealed metal sheath for preventing moisture from entering into the outer layer of the cable. In the power transmission process, the generation of induced voltage in the sheath of the high voltage cable is a common phenomenon in the power cable, and the induced voltage can generate sheath current in the sheath.
In the embodiment of the present disclosure, the cable fault detection device includes a first coil 104, which is a coil disposed on the cable body and is used for detecting the current flowing in the cable body. One section of the coil is connected with the signal acquisition unit 109 and is used for transmitting the acquired signal to the signal acquisition unit 109, and the other end of the coil is arranged on the outer layer of the cable body in a winding manner and is used for detecting the current in the cable body in a manner of surrounding the cable body by winding into the coil.
The one end of second coil with the other end electric connection of first coil, the other end winding of second coil sets up in the skin of ground connection cable, warp outer, with signal acquisition unit electric connection, the ground connection cable is the sheath ground connection part of cable body when the terminal separation.
In the embodiment of the present disclosure, the cable fault detection apparatus further includes a second coil 106, which is a coil disposed on the ground cable 105, wherein the ground cable 105 is a portion of the cable body 101, which is separated when being separated, and the sheath is grounded. In one example, the cable may separate the cable core and the ground cable at a predetermined position, wherein the ground cable is a portion of the cable body where the separated sheath is grounded. One end of the second coil is electrically connected with the other end of the first coil, so that the first coil and the second coil are connected in series; the second coil is arranged at the outer layer of the grounding cable in a winding mode and is used for detecting the current in the grounding cable in a mode that the grounding cable is wound into the coil to surround. After the winding is finished, the other end of the second coil can be electrically connected with the signal acquisition unit and is used for transmitting the acquired signal to the signal acquisition unit together with one end of the first coil.
Wherein, the winding mode of the first coil and the second coil is usually limited. The limiting mode is as follows: by setting the winding directions of the two coils, when current passes through the cable, electromotive forces generated on the first coil and the second coil are opposite in direction.
In one example, since the cable body has a large diameter and the ground cable has a small diameter, the first coil wound around the cable body has a large diameter and the second coil wound around the cable body has a small diameter. In one example, the first coil may have an inner diameter of 120mm and the second coil may have an inner diameter of 40 mm. The two coils are connected in series through a high-frequency coaxial cable; and the coils after being connected in series are connected to the input end of the cable fault acquisition device through a high-frequency coaxial cable.
According to the embodiment of the disclosure, the first coil is arranged on the cable body, the second coil is arranged on the grounding cable, and the first coil is connected with the second coil, so that the sheath current in the cable body monitored by the coils and the current generated by the grounding cable can be mutually offset, and the transmission current of the cable core can be obtained, and therefore, the cost can be low, and whether the cable has a fault can be safely and accurately judged according to the size of the transmission current. Simultaneously, because this disclosed embodiment sets up the coil on cable body and earth connection cable, avoided installing the coil and appeared being close to the too near dangerous condition that leads to of insulating terminal on the cable core. The installation position requirement of this disclosed embodiment to the coil is lower, and the practicality becomes strong, especially the installation in intermediate head department, and inserts the circuit simply, need not unnecessary joint interface.
In an embodiment, the cable fault detection apparatus further includes a first annular supporting member, the first annular supporting member is sleeved on the outer layer of the cable body, and after the other end of the first coil winds around the first annular supporting member in a spiral manner in a direction opposite to the circumferential direction after winding around a circle from a preset initial position of the first annular supporting member in the circumferential direction of the first annular supporting member, the first annular supporting member returns to the preset initial position.
In the embodiment of the present disclosure, when the coil is wound, an annular supporting member is further provided, the first annular supporting member 201 is sleeved on the outer layer of the cable body, and when the first coil is wound on the outer layer of the cable body, the first coil can be wound on the first annular supporting member. In one example, the first annular support is a hollow circular ring. Wherein. The winding mode is that the other end of the first coil winds around the first annular supporting piece along the circumferential direction of the first annular supporting piece for a circle from any preset initial position of the annular supporting piece, and then spirally winds the first annular supporting piece along the reverse direction of the circumferential direction to return to the preset initial position of the annular supporting piece.
In an embodiment, the cable fault detection apparatus further includes a second annular supporting member, the second annular supporting member is sleeved on the outer layer of the ground cable, and after the other end of the second coil winds around the second annular supporting member in a direction opposite to the circumferential direction after winding around a circle from a preset initial position of the second annular supporting member in the circumferential direction of the second annular supporting member, the second coil winds around the second annular supporting member in a spiral manner to return to the preset initial position.
In the embodiment of the present disclosure, when the coil is wound, an annular supporting member is further provided, the second annular supporting member 202 is sleeved on the outer layer of the ground cable, and when the second coil is wound on the outer layer of the cable body, the second coil can be wound on the second annular supporting member. In one example, the second annular support is a hollow circular ring. The winding mode is that the other end of the second coil winds the second annular supporting piece along the circumferential direction of the second annular supporting piece for a circle from any preset initial position of the annular supporting piece, and then spirally winds the second annular supporting piece along the reverse direction of the circumferential direction to return to the preset initial position of the annular supporting piece.
The coil winding device has the advantages that the annular supporting piece is provided for coil winding, the coil can be wound conveniently, parameters of the wound coil are standardized, and the coil parameters can be limited accurately so as to obtain a desired detection signal.
In one embodiment, the other end of the first coil is electrically connected to one end of the second coil through a first conductor of a second cable, and the other end of the second coil is electrically connected to a second conductor of the second cable.
In the embodiment of the present disclosure, the other end of the first coil is electrically connected to one end of the second coil by a first conductor in the second cable 107, the other end of the first coil is connected to one end of the first conductor in the second cable 107, and one end of the second coil is connected to the other end of the first conductor in the second cable. The other end of the second coil is connected to one end of a second conductor of the second cable after being wound around a ground cable.
In one embodiment, the other end of the second coil is electrically connected to the signal acquisition unit through the second conductor of the second cable and the first conductor of the first cable, and one end of the first coil is electrically connected to the signal acquisition unit through the first conductor of the first cable.
In the embodiment of the present disclosure, the other end of the second coil is connected to the second conductor of the second cable 107, and then connected to the signal acquisition unit through the first conductor of the first cable 108, and one end of the first coil is connected to the signal acquisition unit through the first conductor of the first cable 108.
This disclosed embodiment, realized interconnect between first coil, second coil and the signal acquisition unit through setting up first cable and second cable.
In one embodiment, the length of the first cable is greater than a first preset value, and the length of the second cable is greater than a second preset value.
In the embodiment of the present disclosure, the length of the first cable 108 may be greater than a predetermined value, and the length of the second cable 107 may also be greater than a predetermined value. In one example, the preset value may be any length value within a controllable range.
According to the embodiment of the disclosure, the lengths of the first cable and the second cable can be larger than the preset value, so that the limitation of the installation position of the detection device is reduced, and the detection device is more convenient and faster to use.
In one embodiment, the first cable and the second cable are high frequency coaxial cables.
In the embodiment of the present disclosure, the first cable and the second cable are high-frequency coaxial cables.
This disclosed embodiment carries out electric connection through adopting high frequency coaxial cable to first coil, second coil and signal acquisition unit, can make high frequency signal not produce great decay at the in-process of transmission for the signal that signal acquisition unit gathered is more accurate, has improved fault detection's accuracy.
In one embodiment, the mutual inductance of the first coil is the same as the mutual inductance of the second coil.
In the embodiment of the present disclosure, when the first coil and the second coil are arranged, the mutual inductance of the first coil and the mutual inductance of the second coil need to be controlled to be the same.
According to the embodiment of the disclosure, the mutual inductance of the first coil and the second coil is controlled to be the same, so that the electromotive force generated by the sheath current of the first coil and the electromotive force generated by the sheath current of the second coil are controlled to have the same amplitude and opposite sizes, and therefore, the electromotive forces are mutually offset. Only the current of the cable core, namely the transmission current, is reserved, so that the influence of the current of the sheath layer can be eliminated, and the fault signal can be accurately acquired.
In one example, to enable the two coils to be connected in series to achieve sheath current cancellation, the turns and dimensions of the first and second coils should satisfy the following relationship:
U1＝M1×2×f×π×Im
U2＝M2×2×f×π×Im
wherein, U1Is the sheath voltage, U, output by the first coil2Is the voltage output by the second coil, M1Is the mutual inductance of the first coil, M2Is the mutual inductance of the second coil, f is the frequency of the signal of the measured sheath, ImIs the effective value of the current of the detected sheath. Therefore, if U is required1＝U2Then M is required1＝M2I.e. the mutual inductance of the first coil is equal to the mutual inductance of the second coil.
In one embodiment, the number of turns of the first coil and the second coil, the cross-sectional area of the coil, and the inner radius of the coil satisfy the following formula:
N1×S1/R1＝N2×S2/R2. Wherein N is1Is the number of turns of the first coil, N2Number of turns of winding of said second coil, S1Is the cross-sectional area, S, of the winding surface of the first coil2Is the cross-sectional area of the winding surface of the second coil, R1Is the inner radius, R, of the first coil after winding2The inner radius of the second coil after winding is completed.
In one example, let M1＝M2I.e. mu0×N1×S1/(2×π×R1)＝μ0×N2×S2/(2×π×R2)
Wherein, mu0Is a vacuum magnetic conductivity; n is a radical of1Number of turns of winding of coil 1, S1Is the cross-sectional area of the wound coil, R1Is the diameter of the coil 1; n is a radical of2Is the number of turns of the coil 2, S2Is the cross-sectional area of the wound coil, R2The diameter of the coil 2.
After simplification, the following is obtained: n is a radical of1×S1/R1＝N2×S2/R2。
In the embodiment of the present disclosure, when the first coil and the second coil are set, parameters of the first coil and the second coil are set. According to the setting that the mutual inductance of the first coil is the same as that of the second coil, the turn number, the sectional area and the inner radius of the coil are defined as follows: n is a radical of1×S1/R1＝N2×S2/R2. Wherein N is1Is the number of turns of the first coil, N2Number of turns of winding of said second coil, S1Is the cross-sectional area, S, of the winding surface of the first coil2Is the cross-sectional area of the winding surface of the second coil, R1Is the inner radius, R, of the first coil after winding2Winding up the second coilThe finished inner radius.
According to the embodiment of the disclosure, the mutual inductance of the first coil and the second coil is the same by limiting the parameters of the first coil and the second coil, so that the electromotive force generated by the sheath current of the first coil and the electromotive force generated by the sheath current of the second coil can be controlled to be the same in amplitude and opposite in magnitude, and the electromotive forces can be mutually offset. Only the current of the cable core, namely the transmission current, is reserved, so that the influence of the current of the sheath layer can be eliminated, and the fault signal can be accurately acquired.
In one embodiment, the signal acquisition unit is configured to convert the acquired signal into a transmission current of the cable, and send the fault information if the transmission current is greater than a preset threshold.
In the embodiment of the disclosure, the signal acquisition unit converts the acquired signal into the transmission current of the cable, so that whether the cable has a fault or not can be judged according to the judgment of the transmission current. When the transmission current is larger than a preset threshold value, a fault traveling wave signal is generated, namely the cable is in fault at the moment, and the signal acquisition unit sends out fault information at the moment. It is understood that the preset threshold value here is a threshold value set by a user according to the magnitude of the transmission current at the time of cable safety and the transmission current at the time of failure.
According to the embodiment of the disclosure, the signal acquisition unit acquires and converts the signal, judges whether a fault occurs and sends fault information. The embodiment of the disclosure can collect fault signals and send fault information, so that related personnel can acquire the cable fault information in time.
The embodiment of the present disclosure further provides a system for detecting a cable fault, including:
a cable body;
the device for detecting the cable fault in any device in the above-disclosed embodiments.
In the embodiment of the present disclosure, the fault detection system includes a cable body, and the components of the cable body include, but are not limited to, a cable core and a sheath. The basic structure of the cable consists of four parts, namely a wire core, an insulating layer, a shielding layer and a protective layer, wherein the wire core is a conductive part of the power cable, is used for transmitting electric energy and is a main part of the cable; the insulation layer electrically isolates the wire cores from the ground and the wire cores of different phases, ensures electric energy transmission and is an indispensable component in a power cable structure; the shielding layer, the power cable of 15kV and above generally has a conductor shielding layer and an insulation shielding layer; and a protective layer for protecting the power cable from external impurities and moisture, and preventing external force from directly damaging the power cable. The cable can be classified into a medium-low voltage power cable, a high voltage cable, an ultra-high voltage cable and an extra-high voltage cable according to voltage grades, and can be classified into an alternating current cable and a direct current cable according to current systems. At a predetermined position, the sheath of the cable body is separated and grounded to become a grounding cable. The cable fault detection device further comprises a cable fault detection device according to any one of the devices disclosed in the above embodiments, and the implementation scheme for solving the problem provided by the device is the same as the implementation scheme recorded in the above method, so specific limitations can be referred to the limitations of the cable fault detection device in the above description, and are not described again here.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express a few implementations of the embodiments of the present disclosure, and the descriptions thereof are specific and detailed, but not construed as limiting the scope of the claims of the embodiments of the present disclosure. It should be noted that, for those skilled in the art, variations and modifications can be made without departing from the concept of the embodiments of the present disclosure, and these are all within the scope of the embodiments of the present disclosure. Therefore, the protection scope of the embodiments of the present disclosure should be subject to the appended claims.

Claims (11)

1. A cable fault detection device, comprising:
one end of the first coil is electrically connected with the signal acquisition unit, and the other end of the first coil is arranged on the outer layer of the cable body in a winding manner;
the one end of second coil with the other end electric connection of first coil, the other end winding of second coil sets up in the skin of ground connection cable, warp outer, with signal acquisition unit electric connection, the ground connection cable is the sheath ground connection part of cable body when the terminal separation.
2. The apparatus according to claim 1, further comprising a first annular supporting member, wherein the first annular supporting member is sleeved on the outer layer of the cable body, and after the other end of the first coil winds around the first annular supporting member in a spiral manner in a direction opposite to the circumferential direction after winding around a circle in the circumferential direction of the first annular supporting member from a preset initial position of the first annular supporting member, the first annular supporting member returns to the preset initial position.
3. The apparatus according to claim 1, further comprising a second annular supporting member, wherein the second annular supporting member is sleeved on an outer layer of the ground cable, and after the other end of the second coil is wound around the second annular supporting member for one circle along a circumferential direction of the second annular supporting member from a preset initial position of the second annular supporting member, the second coil is spirally wound around the second annular supporting member in a direction opposite to the circumferential direction and returns to the preset initial position.
4. The apparatus for detecting a cable fault according to claim 1, wherein the other end of the first coil is electrically connected to one end of a second coil through a first conductor of a second cable, and the other end of the second coil is electrically connected to a second conductor of the second cable.
5. The cable fault detection device according to claim 4, wherein the other end of the second coil is electrically connected to the signal acquisition unit through the second conductor of the second cable and the first conductor of the first cable, and one end of the first coil is electrically connected to the signal acquisition unit through the first conductor of the first cable.
6. The apparatus according to claim 4 or 5, wherein the length of the first cable is greater than a first preset value and the length of the second cable is greater than a second preset value.
7. The cable fault detection device of claim 4, 5 or 6, wherein the first cable and the second cable are high frequency coaxial cables.
8. The cable fault detection device of claim 1, wherein the first coil has a mutual inductance that is the same as the mutual inductance of the second coil.
9. The apparatus for detecting a cable fault according to claim 8, wherein the number of turns of the first coil and the second coil, the cross-sectional area of the coil, and the inner radius of the coil satisfy the following equation:
N1×S1/R1＝N2×S2/R2
wherein N is1Is the number of turns of the first coil, N2Number of turns of winding of said second coil, S1Is the cross-sectional area, S, of the winding surface of the first coil2Is the cross-sectional area of the winding surface of the second coil, R1Is the inner radius, R, of the first coil after winding2The inner radius of the second coil after winding is completed.
10. The cable fault detection device of claim 1, wherein the signal acquisition unit is configured to convert the acquired signal into a transmission current of the cable, and to send fault information if the transmission current is greater than a preset threshold.
11. A cable fault detection system, comprising:
a cable body;
a cable fault detection apparatus according to any one of claims 1 to 10.
CN202111634732.2A 2021-12-29 2021-12-29 Cable fault detection device Pending CN114200252A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111634732.2A CN114200252A (en) 2021-12-29 2021-12-29 Cable fault detection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111634732.2A CN114200252A (en) 2021-12-29 2021-12-29 Cable fault detection device

Publications (1)

Publication Number Publication Date
CN114200252A true CN114200252A (en) 2022-03-18

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202111634732.2A Pending CN114200252A (en) 2021-12-29 2021-12-29 Cable fault detection device

Country Status (1)

Country Link
CN (1) CN114200252A (en)

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