CN117630567A - Cable fault position positioning method, device and system - Google Patents
Cable fault position positioning method, device and system Download PDFInfo
- Publication number
- CN117630567A CN117630567A CN202311616479.7A CN202311616479A CN117630567A CN 117630567 A CN117630567 A CN 117630567A CN 202311616479 A CN202311616479 A CN 202311616479A CN 117630567 A CN117630567 A CN 117630567A
- Authority
- CN
- China
- Prior art keywords
- magnetic field
- cable
- voltage pulse
- coil
- field direction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 37
- 238000012545 processing Methods 0.000 claims description 13
- 230000008054 signal transmission Effects 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 5
- 230000008859 change Effects 0.000 description 14
- 238000004590 computer program Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Classifications
-
- 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
Landscapes
- Locating Faults (AREA)
Abstract
The application discloses a cable fault location method, device and system, wherein the cable fault location method comprises the following steps: applying voltage pulses with the same voltage from two ends of the cable through two pressurizing devices; acquiring magnetic field direction information generated by the two coil transformers according to the voltage pulse; and determining the fault position of the cable according to the magnetic field direction information. The cable fault location can be located fast.
Description
Technical Field
The application relates to the technical field of power equipment overhaul, in particular to a cable fault position positioning method, device and system.
Background
With the development of cities, various underground pipe networks are densely distributed, a large number of new cable laying technologies (called pulling pipes for short) are adopted, cable regulations for the pulling pipe laying require that cable wells are respectively arranged at two ends of the pulling pipe, the distance is not more than 200 meters, and due to the fact that the underground pipe network is complex, the depth can generally reach between 4 meters and 10 meters when the pulling pipe is adopted, and special conditions can reach about 20 meters. Since the cable is laid deep in the ground, it is difficult to determine the fault point when the cable fails. At present, a pressure device is used for pressurizing a cable to find a fault point in a cable pipe, and then an acoustic measurement point device is used for locating the fault point, but a pipe pulling technology is adopted for laying the cable at a deep underground position and in the pipe, so that the sound generated by discharge is difficult to convey to the ground, and therefore, the fault point of the cable is difficult to determine.
Disclosure of Invention
The present application has been made in order to solve the above technical problems. The embodiment of the application provides a cable fault location method, device and system, which can be used for rapidly locating the cable fault location.
According to an aspect of the present application, there is provided a cable fault location method, adapted for two coil transformers mounted on a cable, the cable fault location method comprising: applying voltage pulses with the same voltage from two ends of the cable through two pressurizing devices; acquiring magnetic field direction information generated by the two coil transformers according to the voltage pulse; and determining the fault position of the cable according to the magnetic field direction information.
In an embodiment, the determining the fault location of the cable according to the magnetic field direction information includes: and when the two magnetic field direction information indicates that the directions of the magnetic fields generated by the two coil transformers are opposite, determining that the fault position of the cable is between the two coil transformers.
In an embodiment, the cable fault location method further includes: when the two magnetic field direction information indicates that the magnetic field directions generated by the two coil transformers are the same, the positions of the coil transformers are adjusted according to the magnetic field direction information and the direction of the pulse applied by the pressurizing device; the obtaining the magnetic field direction information generated by the two coil transformers according to the voltage pulse includes: and acquiring the magnetic field direction information generated by the two adjusted coil transformers according to the voltage pulse.
In an embodiment, the two pressurizing devices include a first unipolar voltage pulse generating device and a second unipolar voltage pulse generating device, and when the two magnetic field direction information indicates that the magnetic field directions generated by the two coil transformers are the same, adjusting the positions of the coil transformers according to the magnetic field direction information and the direction of the applied pulse of the pressurizing devices includes: when the two magnetic field direction information indicates that the magnetic field directions generated by the two coil transformers are the same and the magnetic field direction information indicates that the magnetic field direction is opposite to the direction of the pulse applied by the first unipolar voltage pulse generating device, confirming that the fault position is in the direction of the second unipolar voltage pulse generating device; and adjusting the coil transformer close to the first unipolar voltage pulse generating device to move a preset distance towards the second unipolar voltage pulse generating device.
In an embodiment, the two pressurizing devices include a first unipolar voltage pulse generating device and a second unipolar voltage pulse generating device, and when the two magnetic field direction information indicates that the magnetic field directions generated by the two coil transformers are the same, adjusting the positions of the coil transformers according to the magnetic field direction information and the direction of the applied pulse of the pressurizing devices includes: when the two magnetic field direction information indicates that the magnetic field directions generated by the two coil transformers are the same and the magnetic field direction information indicates that the magnetic field direction is opposite to the direction of the pulse applied by the second unipolar voltage pulse generating device, confirming that the fault position is in the direction of the first unipolar voltage pulse generating device; and adjusting the coil transformer close to the second unipolar voltage pulse generating device to move a preset distance towards the first unipolar voltage pulse generating device.
In one embodiment, the applying the same voltage pulse from both ends of the cable by the two pressurizing means comprises: the same voltage pulse is applied from both ends of the cable at preset time intervals by two pressurizing means.
In an embodiment, the determining the fault location of the cable according to the magnetic field direction information includes: and determining the fault position of the cable according to the magnetic field direction information, the direction of applying the voltage pulse and Lenz's law.
According to another aspect of the present application, there is provided a cable fault location device adapted for two coil transformers mounted on a cable, the cable fault location device comprising: the pressurizing module is used for applying voltage pulses with the same voltage from two ends of the cable through two pressurizing devices; the acquisition module is used for acquiring magnetic field direction information generated by the two coil transformers according to the voltage pulse; and the determining module is used for determining the fault position of the cable according to the magnetic field direction information.
According to another aspect of the present application, there is provided a cable fault location system comprising: the two pressurizing devices are respectively arranged at two ends of the cable; the two coil transformers are respectively sleeved on the cable; and the signal processing device is in communication connection with the signal transmitting assembly and is used for executing the cable fault location positioning method according to any one of the embodiments.
In one embodiment, the two pressurizing means comprise: a first unipolar voltage pulse generator and a second unipolar voltage pulse generator, the first unipolar voltage pulse generator and the second unipolar voltage pulse generator being mounted at two ends of a cable, respectively, the first unipolar voltage pulse generator and the second unipolar voltage pulse generator being configured to apply voltage pulses to the cable; the two coil transformers include: the device comprises a first coil mutual inductance device and a second coil mutual inductance device, wherein the first coil mutual inductance device and the second coil mutual inductance device comprise a signal acquisition component and a signal transmission component, the first coil mutual inductance device and the second coil mutual inductance device are sleeved on a cable, the signal acquisition component is configured to acquire magnetic field direction signals, and the signal transmission component is configured to transmit the magnetic field direction signals.
According to the cable fault location method, device and system, the two coil transformers are utilized to judge the difference between the magnetic field direction and the magnetic field direction of the applied voltage pulse in a mode of applying voltage pulses at two ends of a cable, so that the location of a cable fault point is judged, and the cable fault location method, device and system are convenient, simple, high in safety and high in accuracy.
Drawings
The foregoing and other objects, features and advantages of the present application will become more apparent from the following more particular description of embodiments of the present application, as illustrated in the accompanying drawings. The accompanying drawings are included to provide a further understanding of embodiments of the application and are incorporated in and constitute a part of this specification, illustrate the application and not constitute a limitation to the application. In the drawings, like reference numerals generally refer to like parts or steps.
Fig. 1 is a flow chart of a method for locating a fault location of a cable according to an exemplary embodiment of the present application.
Fig. 2 is a flow chart of a method for locating a fault location of a cable according to another exemplary embodiment of the present application.
Fig. 3 is a schematic structural view of a cable fault location device according to an exemplary embodiment of the present application.
Fig. 4 is a schematic structural view of a cable fault location device according to another exemplary embodiment of the present application.
Fig. 5 is a block diagram of an electronic device according to an exemplary embodiment of the present application.
Detailed Description
Hereinafter, example embodiments according to the present application will be described in detail with reference to the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application and not all of the embodiments of the present application, and it should be understood that the present application is not limited by the example embodiments described herein.
Summary of the application
With the development of cities, various underground pipe networks are densely distributed, and a large number of new cable laying technologies such as trenchless directional drilling and pulling pipe (called pulling pipe for short) are adopted, and pipe pulling generally refers to pulling a pipeline from one place to another place underground through a certain method and tool so as to connect different equipment or areas. The cable regulation for pulling pipe laying requires that two cable wells are arranged at two ends of the pulling pipe respectively. Underground pipe network is complicated, and the degree of depth often can reach between 4 meters and 10 when adopting the stay tube, and special circumstances can reach about 20 meters, because cable laying is in the underground depths, is difficult to confirm the fault point when the cable breaks down to the cable of fault point department is difficult to dig out when breaking down and restores, consequently this section trouble cable between two wells is usually directly changed, and because cable laying degree of depth is big, confirm that cable fault point is also very difficult between which two wells. Therefore, the application provides a cable fault location method, device and system, through the mode of adding voltage pulse at the cable both ends, utilize two coil transformers to judge the difference of magnetic field direction and applied voltage pulse magnetic field direction to judge cable fault point position, it is convenient simple and high in accuracy, and be applicable to any cable that does not need accurate fixed point.
Exemplary System
According to another aspect of the present application, there is provided a cable fault location system comprising: the two pressurizing devices are respectively arranged at two ends of the cable; the two coil transformers are respectively sleeved on the cable; and the signal processing device is in communication connection with the signal transmitting assembly and is used for executing the cable fault location positioning method of any embodiment.
The pressurizing device is used for applying voltage pulse to the cable, when the voltage pulse is applied to the cable each time, the two coil transformers can generate a magnetic field in the opposite direction to the applied magnetic field according to Lenz's law, after the magnetic field is induced in the coil, a signal acquisition component built in the coil transformer sends magnetic field direction information to the signal processing device, the signal processing device judges the fault position at the position of the two coils according to the two transmitted magnetic field direction information, when the magnetic field directions are the same when signals are transmitted by the two coils, the fault position is judged to be on one side according to the coil magnetic field direction. The utility model provides a cable fault position positioning system through the mode at cable both ends voltage pulse, utilizes two coil transformers to judge the magnetic field direction and apply the difference of voltage pulse magnetic field direction to judge cable fault point position, convenient simple, the security is high, the accuracy is high.
In one embodiment, the two pressurizing means comprise: the first unipolar voltage pulse generating device and the second unipolar voltage pulse generating device are respectively arranged at two ends of the cable and are configured to apply voltage pulses to the cable; the two coil transformers include: the first coil mutual inductance device and the second coil mutual inductance device comprise a signal acquisition component and a signal transmission component, the first coil mutual inductance device and the second coil mutual inductance device are sleeved on a cable, the signal acquisition component is configured to acquire magnetic field direction signals, and the signal transmission component is configured to transmit magnetic field direction signals.
For example, two unipolar voltage pulse generating devices are connected to two ends of a cable respectively, voltage pulses (such as 100v±5V) with the same voltage are applied from the two ends of the cable, manual pressurization can be selected when the voltage is applied, and automatic pressurization can also be selected, wherein the manual pressurization is to apply a voltage pulse to the cable every time when a manual key is pressed, the automatic pressurization can be selected to adjust the time interval of voltage pulse transmission, the time interval can be selected to be 3 seconds to 10 seconds, and the voltage pulse can be automatically applied once every selected time interval by the pressurizing device after the automatic pressurization key is pressed after the time interval is selected. When the voltage pulse is applied to the cable each time, the coils of the two coil transformers generate a magnetic field in the opposite direction to the applied magnetic field according to Lenz's law, if the direction of the induced magnetic field is opposite to the direction of the pulse applied by the first unipolar voltage pulse generating device, the fault point is displayed in the direction of the second unipolar voltage pulse generating device on the signal processing device, at the moment, the coil transformer close to the first unipolar voltage pulse generating device is required to be moved towards the direction of the second unipolar voltage pulse generating device, the signal magnetic field directions of the two coil transformers are compared, and when the directions of the two coil transformers are opposite, the fault point can be judged to be between the two coils. If the induced magnetic field is opposite to the voltage pulse direction of the second unipolar voltage pulse generating device, the signal processing device displays the fault point in the direction of the first unipolar voltage pulse generating device, and the coil close to the second unipolar voltage pulse generating device is required to be moved towards the direction of the first unipolar voltage pulse generating device until the magnetic fields of the two coils are opposite, and the fault point can be judged to be between the two coil transformers.
Exemplary method
Fig. 1 is a flowchart of a cable fault location method according to an exemplary embodiment of the present application, where, as shown in fig. 1, the cable fault location method is applicable to two coil transformers installed on a cable, and the cable fault location method includes:
step 100: a voltage pulse of the same voltage is applied from both ends of the cable by means of two pressurizing means.
Firstly, two pressurizing devices are respectively connected to two ends of a cable, voltage pulses (for example, 100 V+/-5V) with the same voltage are applied from the two ends of the cable, manual pressurizing can be selected when the voltage is applied, and automatic pressurizing can also be selected, wherein the manual pressurizing is to apply one voltage pulse to the cable every time when a manual button is pressed, the automatic pressurizing can be selected to adjust the time interval (for example, the time interval is selected to be 3 seconds to 10 seconds) for transmitting the applied voltage pulse, and after the transmitting time interval is selected, the voltage pulse can be automatically applied according to the set time interval only by pressing the automatic pressurizing button pressurizing device once.
Step 200: and acquiring magnetic field direction information generated by the two coil transformers according to the voltage pulse.
When the cable is applied with voltage pulse each time, the two coil transformers will generate a magnetic field in opposite direction to the applied magnetic field according to Lenz's law, which describes the induced electromotive force generated in the closed circuit when the magnetic field changes. According to lenz's law, when a magnetic field is changed by a closed circuit, an induced current is generated in the circuit, and the direction of the induced current causes the change of the generated magnetic field to hinder the change of the original magnetic field. Thus, both coil transformers generate new magnetic field direction information based on the voltage pulses.
Step 300: and determining the fault position of the cable according to the magnetic field direction information.
And judging the position condition of the fault position relative to the two coil transformers according to the magnetic field direction information and the magnetic field direction of the applied voltage pulse. For example, if the magnetic fields of the two coil transformers are opposite, it may be determined that the fault point is between the two coils, and then the positions of the coil transformers are gradually moved, so as to reduce the fault range and lock the fault position of the cable.
According to the cable fault location method, the two coil transformers are utilized to judge the difference between the magnetic field direction and the direction of the applied voltage pulse magnetic field in a mode of applying voltage pulses at two ends of a cable, so that the cable fault point location is judged, and the cable fault location method is convenient, simple, high in safety and high in accuracy.
In one embodiment, the step 300 may include: when the two magnetic field direction information indicates that the directions of the magnetic fields generated by the two coil transformers are opposite, determining that the fault position of the cable is between the two coil transformers.
The magnetic field variation of the coil transformer occurs in two ways: firstly, the change of the external magnetic field affects the magnetic field of the coil transformer, and secondly, the change of the internal magnetic field of the coil transformer. For changes in the external magnetic field, the coil transformer generates a current through wires in the coil, thereby generating a magnetic field. When the external magnetic field changes, the wires in the coil are subjected to a force, generating an induced electromotive force, thereby causing a current change in the coil. This change will be reflected by the output of the coil transformer. For variations in the internal magnetic field, the coil transformer is typically composed of one primary coil and one secondary coil. The magnetic field is generated in the main coil through current, and the secondary coil senses the magnetic field change in the main coil. When the magnetic field in the primary coil changes, an electromotive force is induced in the secondary coil, thereby generating a current. This change in current will be reflected by the output of the coil transformer. Therefore, after the voltage pulse is applied, the directions of the magnetic fields generated by the two coil transformers are compared, and if the directions of the magnetic fields generated by the two coil transformers are opposite, the fault position can be determined to be between the two coil transformers.
Fig. 2 is a schematic flow chart of a cable fault location method according to another exemplary embodiment of the present application, where, as shown in fig. 2, the cable fault location method may further include:
step 400: when the two magnetic field direction information indicates that the magnetic field directions generated by the two coil transformers are the same, the positions of the coil transformers are adjusted according to the magnetic field direction information and the direction of the applied pulse of the pressurizing device;
the step 200 may be correspondingly adjusted to:
step 210: and acquiring magnetic field direction information generated by the two adjusted coil transformers according to the voltage pulse.
The two magnetic field direction information indicates that when the magnetic field directions generated by the two coil transformers are the same, the magnetic field directions generated by the coil transformers and the direction of the applied pulse of the pressurizing device are compared. For example, if the direction of the induced magnetic field is opposite to the direction of the pulse applied by the first unipolar voltage pulse generating device, the signal processing device will display the fault point in the direction of the second unipolar voltage pulse generating device, and at this time, the coil transformer close to the first unipolar voltage pulse generating device needs to be moved towards the direction of the second unipolar voltage pulse generating device, and then the signal magnetic field directions of the two coil transformers are compared, and when the directions of the two coil transformers are opposite, the fault point can be judged to be between the two coils. If the induced magnetic field is opposite to the voltage pulse direction of the second unipolar voltage pulse generating device, the signal processing device displays the fault point in the direction of the first unipolar voltage pulse generating device, and the coil close to the second unipolar voltage pulse generating device is required to be moved towards the direction of the first unipolar voltage pulse generating device until the magnetic fields of the two coils are opposite, and then the fault point can be judged to be between the two coil transformers. And continuously acquiring magnetic field direction information generated by the two adjusted coil transformers according to the voltage pulse after the adjustment is completed, determining that the fault position of the cable is between the two coil transformers if the two magnetic field direction information indicates that the magnetic field directions generated by the two coil transformers are opposite, and continuously adjusting the position of one of the coil transformers according to the steps if the two magnetic field direction information indicates that the magnetic field directions generated by the two coil transformers are the same.
In an embodiment, the two pressurizing devices include a first unipolar voltage pulse generating device and a second unipolar voltage pulse generating device, and when the two magnetic field direction information indicates that the magnetic field directions generated by the two coil transformers are the same, adjusting the positions of the coil transformers according to the magnetic field direction information and the direction of the applied pulse of the pressurizing devices includes: when the two magnetic field direction information indicates that the magnetic field directions generated by the two coil transformers are the same and the magnetic field direction information indicates that the magnetic field directions are opposite to the directions of the pulses applied by the first unipolar voltage pulse generating device, confirming that the fault position is in the direction of the second unipolar voltage pulse generating device; and adjusting a coil transformer close to the first unipolar voltage pulse generating device to move a preset distance towards the second unipolar voltage pulse generating device.
For example, when the two magnetic field direction information indicates that the magnetic field directions generated by the two coil transformers are the same and the magnetic field direction information indicates that the magnetic field direction is opposite to the direction in which the pulse is applied by the first unipolar voltage pulse generating device, the fault location is confirmed to be in the direction of the second unipolar voltage pulse generating device, and the coil close to the first unipolar voltage pulse generating device needs to be moved to the direction of the second unipolar voltage pulse generating device by a preset distance until the magnetic field directions of the two coils are opposite, the fault point can be judged to be between the two coil transformers. And continuously acquiring magnetic field direction information generated by the two adjusted coil transformers according to the voltage pulse after adjustment, determining that the fault position of the cable is between the two coil transformers if the two magnetic field direction information indicates that the magnetic field directions generated by the two coil transformers are opposite, and continuously moving the coil close to the first unipolar voltage pulse generating device to the direction of the second unipolar voltage pulse generating device by a preset distance according to the steps if the two magnetic field direction information indicates that the magnetic field directions generated by the two coil transformers are the same.
In an embodiment, the two pressurizing devices include a first unipolar voltage pulse generating device and a second unipolar voltage pulse generating device, and when the two magnetic field direction information indicates that the magnetic field directions generated by the two coil transformers are the same, adjusting the positions of the coil transformers according to the magnetic field direction information and the direction of the applied pulse of the pressurizing devices includes: when the two magnetic field direction information indicates that the magnetic field directions generated by the two coil transformers are the same and the magnetic field direction information indicates that the magnetic field direction is opposite to the direction of the pulse applied by the second unipolar voltage pulse generating device, confirming that the fault position is in the direction of the first unipolar voltage pulse generating device; and adjusting a coil transformer close to the second unipolar voltage pulse generating device to move a preset distance towards the first unipolar voltage pulse generating device.
For example, when the two magnetic field direction information indicates that the magnetic field directions generated by the two coil transformers are the same and the induced magnetic field is opposite to the voltage pulse direction of the second unipolar voltage pulse generating device, the signal processing device will display that the fault point is in the direction of the first unipolar voltage pulse generating device, and the coil close to the second unipolar voltage pulse generating device needs to be moved towards the direction of the first unipolar voltage pulse generating device until the magnetic field directions of the two coils are opposite, and then the fault point can be judged to be between the two coil transformers. If the two magnetic field direction information still indicates that the magnetic field directions generated by the two coil transformers are the same, the coil close to the second unipolar voltage pulse generating device is continuously moved to the direction of the first unipolar voltage pulse generating device by a preset distance according to the steps.
In one embodiment, the step 100 may include: the same voltage pulse is applied from both ends of the cable at preset time intervals by two pressurizing means.
The two pressurizing devices are respectively connected to two ends of the cable, voltage pulses (for example, 100 V+/-5V) with the same voltage are applied from the two ends of the cable, the preset time interval (for example, the selected time interval is between 3 seconds and 10 seconds) for transmitting the applied voltage pulses can be adjusted, and after the preset time interval is selected, the voltage pulses can be automatically applied according to the preset time interval only by pressing the automatic pressurizing key pressurizing device once.
In one embodiment, the step 300 may include: and determining the fault position of the cable according to the magnetic field direction information, the direction of the applied voltage pulse and Lenz law.
The magnetic field variation of the coil transformer occurs in two ways: firstly, the change of the external magnetic field affects the magnetic field of the coil transformer, and secondly, the change of the internal magnetic field of the coil transformer. For changes in the external magnetic field, the coil transformer generates a current through wires in the coil, thereby generating a magnetic field. When the external magnetic field changes, the wires in the coil are subjected to a force, generating an induced electromotive force, thereby causing a current change in the coil. This change will be reflected by the output of the coil transformer. For variations in the internal magnetic field, the coil transformer is typically composed of one primary coil and one secondary coil. The magnetic field is generated in the main coil through current, and the secondary coil senses the magnetic field change in the main coil. When the magnetic field in the primary coil changes, an electromotive force is induced in the secondary coil, thereby generating a current. This change in current will be reflected by the output of the coil transformer. Therefore, after the voltage pulse is applied, the directions of the magnetic fields generated by the two coil transformers are compared, and if the directions of the magnetic fields generated by the two coil transformers are opposite, the fault position can be determined to be between the two coil transformers. If the two magnetic field direction information indicates that the magnetic field directions generated by the two coil transformers are the same and the magnetic field direction information indicates that the magnetic field direction is opposite to one of the pressurizing devices, the position adjustment needs to be performed according to the pressurizing device and the adjacent coil transformer.
Exemplary apparatus
Fig. 3 is a schematic structural diagram of a cable fault location device according to an exemplary embodiment of the present application, and as shown in fig. 3, the cable fault location device is suitable for two coil transformers mounted on a cable, and the cable fault location device 8 includes: the pressing module 81, the pressing module 81 is used for applying voltage pulses with the same voltage from two ends of the cable through two pressing devices; the acquisition module 82 is used for acquiring magnetic field direction information generated by the two coil transformers according to the voltage pulse; the determining module 83, the determining module 83 is configured to determine a fault location of the cable according to the magnetic field direction information.
The utility model provides a cable fault position positioner through the mode at cable both ends voltage pulse, utilizes two coil transformers to judge the magnetic field direction and apply the difference of voltage pulse magnetic field direction to judge cable fault point position, convenient simple, the security is high, the accuracy is high.
In an embodiment, the determining module 83 may be configured to: when the two magnetic field direction information indicates that the directions of the magnetic fields generated by the two coil transformers are opposite, determining that the fault position of the cable is between the two coil transformers.
Fig. 4 is a schematic structural diagram of a cable fault location device according to another exemplary embodiment of the present application, and as shown in fig. 4, the cable fault location device 8 may further include: the adjusting module 84, the adjusting module 84 is configured to adjust the position of the coil transformer according to the magnetic field direction information and the direction of the pulse applied by the pressurizing device when the two magnetic field direction information indicates that the magnetic field directions generated by the two coil transformers are the same; the acquiring module 82 may include: and an acquisition unit 821, wherein the acquisition unit 821 is used for acquiring the magnetic field direction information generated by the two adjusted coil transformers according to the voltage pulse.
In an embodiment, the two pressurizing means comprise a first unipolar voltage pulse generating means and a second unipolar voltage pulse generating means, and the cable fault location means 8 may be further configured to: when the two magnetic field direction information indicates that the magnetic field directions generated by the two coil transformers are the same and the magnetic field direction information indicates that the magnetic field directions are opposite to the directions of the pulses applied by the first unipolar voltage pulse generating device, confirming that the fault position is in the direction of the second unipolar voltage pulse generating device; and adjusting a coil transformer close to the first unipolar voltage pulse generating device to move a preset distance towards the second unipolar voltage pulse generating device.
In an embodiment, the two pressurizing means comprise a first unipolar voltage pulse generating means and a second unipolar voltage pulse generating means, and the cable fault location means 8 may be further configured to: when the two magnetic field direction information indicates that the magnetic field directions generated by the two coil transformers are the same and the magnetic field direction information indicates that the magnetic field direction is opposite to the direction of the pulse applied by the second unipolar voltage pulse generating device, confirming that the fault position is in the direction of the first unipolar voltage pulse generating device; and adjusting a coil transformer close to the second unipolar voltage pulse generating device to move a preset distance towards the first unipolar voltage pulse generating device.
In an embodiment, the pressing module 81 may be configured to: the same voltage pulse is applied from both ends of the cable at preset time intervals by two pressurizing means.
In an embodiment, the determining module 83 may be configured to: and determining the fault position of the cable according to the magnetic field direction information, the direction of the applied voltage pulse and Lenz law.
Exemplary electronic device
An electronic device, the electronic device comprising: a processor; a memory for storing processor-executable instructions; and the processor is used for executing the cable fault location positioning method of the embodiment provided by the application.
Next, an electronic device according to an embodiment of the present application is described with reference to fig. 5. The electronic device may be either or both of the first device and the second device, or a stand-alone device independent thereof, which may communicate with the first device and the second device to receive the acquired input signals therefrom.
Fig. 5 illustrates a block diagram of an electronic device according to an embodiment of the present application.
As shown in fig. 5, the electronic device 10 includes one or more processors 11 and a memory 12.
The processor 11 may be a Central Processing Unit (CPU) or other form of processing unit having data processing and/or instruction execution capabilities, and may control other components in the electronic device 10 to perform desired functions.
Memory 12 may include one or more computer program products that may include various forms of computer-readable storage media, such as volatile memory and/or non-volatile memory. Volatile memory can include, for example, random Access Memory (RAM) and/or cache memory (cache) and the like. The non-volatile memory may include, for example, read Only Memory (ROM), hard disk, flash memory, and the like. One or more computer program instructions may be stored on a computer readable storage medium and the processor 11 may execute the program instructions to implement the cable fault location methods of the various embodiments of the present application described above and/or other desired functions. Various contents such as an input signal, a signal component, a noise component, and the like may also be stored in the computer-readable storage medium.
In one example, the electronic device 10 may further include: an input device 13 and an output device 14, which are interconnected by a bus system and/or other forms of connection mechanisms (not shown).
When the electronic device is a stand-alone device, the input means 13 may be a communication network connector for receiving the acquired input signals from the first device and the second device.
In addition, the input device 13 may also include, for example, a keyboard, a mouse, and the like.
The output device 14 may output various information to the outside, including the determined distance information, direction information, and the like. The output means 14 may include, for example, a display, speakers, a printer, and a communication network and remote output devices connected thereto, etc.
Of course, only some of the components of the electronic device 10 that are relevant to the present application are shown in fig. 5 for simplicity, components such as buses, input/output interfaces, etc. are omitted. In addition, the electronic device 10 may include any other suitable components depending on the particular application.
The computer program product may write program code for performing the operations of embodiments of the present application in any combination of one or more programming languages, including an object oriented programming language such as Java, C++ or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computing device, partly on the user's device, as a stand-alone software package, partly on the user's computing device, partly on a remote computing device, or entirely on the remote computing device or server.
A computer readable storage medium storing a computer program for executing the cable fault location method according to the embodiments provided herein.
The computer readable storage medium may employ any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. The readable storage medium may include, for example, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples (a non-exhaustive list) of the readable storage medium would include the following: an electrical connection having one or more wires, a portable disk, a hard disk, random Access Memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
The foregoing description has been presented for purposes of illustration and description. Furthermore, this description is not intended to limit the embodiments of the application to the form disclosed herein. Although a number of example aspects and embodiments have been discussed above, a person of ordinary skill in the art will recognize certain variations, modifications, alterations, additions, and subcombinations thereof.
Claims (10)
1. A cable fault location method, suitable for two coil transformers mounted on a cable, comprising:
applying voltage pulses with the same voltage from two ends of the cable through two pressurizing devices;
acquiring magnetic field direction information generated by the two coil transformers according to the voltage pulse;
and determining the fault position of the cable according to the magnetic field direction information.
2. The method of claim 1, wherein determining the fault location of the cable based on the magnetic field direction information comprises:
and when the two magnetic field direction information indicates that the directions of the magnetic fields generated by the two coil transformers are opposite, determining that the fault position of the cable is between the two coil transformers.
3. The cable fault location method of claim 1, wherein the cable fault location method further comprises:
when the two magnetic field direction information indicates that the magnetic field directions generated by the two coil transformers are the same, the positions of the coil transformers are adjusted according to the magnetic field direction information and the direction of the pulse applied by the pressurizing device;
the obtaining the magnetic field direction information generated by the two coil transformers according to the voltage pulse includes:
and acquiring the magnetic field direction information generated by the two adjusted coil transformers according to the voltage pulse.
4. A cable fault location method according to claim 3, wherein the two pressurizing means include a first unipolar voltage pulse generating means and a second unipolar voltage pulse generating means, and when the two magnetic field direction information indicates that the magnetic field directions generated by the two coil transformers are the same, adjusting the positions of the coil transformers according to the magnetic field direction information and the direction of the applied pulses of the pressurizing means includes:
when the two magnetic field direction information indicates that the magnetic field directions generated by the two coil transformers are the same and the magnetic field direction information indicates that the magnetic field direction is opposite to the direction of the pulse applied by the first unipolar voltage pulse generating device, confirming that the fault position is in the direction of the second unipolar voltage pulse generating device;
and adjusting the coil transformer close to the first unipolar voltage pulse generating device to move a preset distance towards the second unipolar voltage pulse generating device.
5. A cable fault location method according to claim 3, wherein the two pressurizing means include a first unipolar voltage pulse generating means and a second unipolar voltage pulse generating means, and when the two magnetic field direction information indicates that the magnetic field directions generated by the two coil transformers are the same, adjusting the positions of the coil transformers according to the magnetic field direction information and the direction of the applied pulses of the pressurizing means includes:
when the two magnetic field direction information indicates that the magnetic field directions generated by the two coil transformers are the same and the magnetic field direction information indicates that the magnetic field direction is opposite to the direction of the pulse applied by the second unipolar voltage pulse generating device, confirming that the fault position is in the direction of the first unipolar voltage pulse generating device;
and adjusting the coil transformer close to the second unipolar voltage pulse generating device to move a preset distance towards the first unipolar voltage pulse generating device.
6. The method of claim 1, wherein applying voltage pulses of the same voltage from both ends of the cable by the two pressurizing means comprises:
the same voltage pulse is applied from both ends of the cable at preset time intervals by two pressurizing means.
7. The method of claim 1, wherein determining the fault location of the cable based on the magnetic field direction information comprises:
and determining the fault position of the cable according to the magnetic field direction information, the direction of applying the voltage pulse and Lenz's law.
8. A cable fault location device adapted for two coil transformers mounted on a cable, the cable fault location device comprising:
the pressurizing module is used for applying voltage pulses with the same voltage from two ends of the cable through two pressurizing devices;
the acquisition module is used for acquiring magnetic field direction information generated by the two coil transformers according to the voltage pulse;
and the determining module is used for determining the fault position of the cable according to the magnetic field direction information.
9. A cable fault location system, comprising:
the two pressurizing devices are respectively arranged at two ends of the cable;
the two coil transformers are respectively sleeved on the cable;
signal processing means in communication with the signal emitting assembly for performing the cable fault location method according to any one of the preceding claims 1 to 7.
10. The cable fault location system of claim 9, wherein two of said pressurizing means comprise: a first unipolar voltage pulse generator and a second unipolar voltage pulse generator, the first unipolar voltage pulse generator and the second unipolar voltage pulse generator being mounted at two ends of a cable, respectively, the first unipolar voltage pulse generator and the second unipolar voltage pulse generator being configured to apply voltage pulses to the cable;
the two coil transformers include: the device comprises a first coil mutual inductance device and a second coil mutual inductance device, wherein the first coil mutual inductance device and the second coil mutual inductance device comprise a signal acquisition component and a signal transmission component, the first coil mutual inductance device and the second coil mutual inductance device are sleeved on a cable, the signal acquisition component is configured to acquire magnetic field direction signals, and the signal transmission component is configured to transmit the magnetic field direction signals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311616479.7A CN117630567A (en) | 2023-11-29 | 2023-11-29 | Cable fault position positioning method, device and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311616479.7A CN117630567A (en) | 2023-11-29 | 2023-11-29 | Cable fault position positioning method, device and system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117630567A true CN117630567A (en) | 2024-03-01 |
Family
ID=90022916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311616479.7A Pending CN117630567A (en) | 2023-11-29 | 2023-11-29 | Cable fault position positioning method, device and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117630567A (en) |
-
2023
- 2023-11-29 CN CN202311616479.7A patent/CN117630567A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6642700B2 (en) | System, method, field unit, reference unit and computer program product for phase tracking of electrical conductors | |
| RU2648391C2 (en) | Downhole gradiometric ranging utilising transmitters and receivers having magnetic dipoles | |
| EP3140506B1 (en) | Detecting defects in non-nested tubings and casings using calibrated data and time thresholds | |
| MX2010008773A (en) | System and method for using dual telemetry. | |
| EP3478931B1 (en) | Method for in-situ calibration of electromagnetic corrosion detection tools | |
| US11603740B2 (en) | Method for real-time interpretation of pressure transient test | |
| KR101720139B1 (en) | Associating a point cloud image with a piping line drawing and applying dimensions regarding the same | |
| US20180106764A1 (en) | Multi-point in situ calibration of electromagnetic pipe inspection tools | |
| CA2941016C (en) | Detection method and detection device of buried metal | |
| JP2005520229A (en) | Method and system for remotely operating detection device | |
| US20150019134A1 (en) | Wellbore Positioning System and Method | |
| CN113985780B (en) | Multi-channel remote control device and method, storage medium and electronic equipment | |
| CA1163693A (en) | Apparatus for conduit free-point detection in boreholes | |
| CN108508290B (en) | Noise fault simulation method and device | |
| CN114267093A (en) | AR-based power equipment inspection method and device | |
| CN117630567A (en) | Cable fault position positioning method, device and system | |
| Tang et al. | Monitoring the slip of helical wires in a flexible riser under combined tension and bending | |
| JPH10105861A (en) | Sensor signal transmitting method and device therefor | |
| CN110674623B (en) | Reading system and method for modeled embedded part positioning information | |
| US20200141228A1 (en) | Tool and method to make high resolution and high penetration measurement of corrosion | |
| WO2018067135A1 (en) | Distributed sensing systems and methods with spatial location correlation | |
| CN108037420B (en) | Cable joint fault detection equipment based on traveling wave method | |
| CN210268565U (en) | Pipeline creep measurement system | |
| CN113566686A (en) | Method and device for verifying buried depth position based on ultra-large buried depth pipeline | |
| CN101416189B (en) | Method for taking regard of topological structure and visual predetermined value planning technology apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |