Cable line fault early warning and positioning device

Abstract

The utility model relates to a cable line fault early warning and positioning device. The cable line fault early warning and positioning device comprises a current sensor, a voltage polar plate, an electricity taking iron core, an induction electricity taking plate, a power supply plate, a communication template and a mainboard, the voltage polar plate, the current sensor and the communication template are all electrically connected with the main board, and the electricity-taking iron core is electrically connected with the induction electricity-taking plate, the power panel and the main board in sequence. The current sensor and the voltage polar plate sense magnetic field and electric field signals generated by a wire in the surrounding space in real time when a fault occurs, the signals are collected by the mainboard and then sent to the data control center through the communication module, and a maintainer analyzes fault information and judges the fault position in a traveling wave double-end positioning mode according to collected current data and voltage data. The fault early warning and positioning device is not limited by the resistance of a cable line, a cable terminal does not need to be unfastened, current and voltage data are monitored in real time, the positioning efficiency is high, and the positioning precision is high.

Description

Technical Field

[0001] The utility model relates to the technical field of electric power, in particular to a cable line fault early warning and positioning device. Background Art

[0002] Currently, the commonly used cable line fault location technologies are as follows:

[0003] Bridge method: It is relatively easy to operate and has high measurement accuracy. It is suitable for detecting cable faults with low resistance, but its application is limited for cables with high resistance and open circuit faults.

[0004] The impulse high-voltage flashover method is widely used in engineering. It applies an impulse high voltage to the starting end of the faulty cable, causing a rapid breakdown. The voltage spike at the moment of the fault is recorded, and then combined with time-distance testing to determine the fault location and countermeasures. However, this method requires disconnecting the cable terminals and is inefficient for offline operation.

[0005] Acoustic testing: This method uses the sound of a faulty cable discharge to locate the fault point. It is particularly effective for flashover discharges from the core of a high-voltage cable to the insulation layer. The equipment used is a DC withstand voltage tester. This method requires determining and marking the cable path. A microphone is placed close to the ground and moved along the cable path. The fault point is identified when the loudest discharge sound is heard. However, this method is inefficient, lacks high positioning accuracy, and is not very practical. Utility Model Content

[0006] The technical problem to be solved by the utility model is to provide a cable line fault early warning and positioning device to overcome the deficiencies in the above-mentioned prior art.

[0007] The technical solution of the utility model to solve the above technical problems is as follows: a cable line fault early warning and positioning device, including a current sensor, a voltage plate, a power-taking iron core, an induction power-taking board, a power board, a communication template and a main board; the voltage plate, the current sensor and the communication template are respectively electrically connected to the main board, and the power-taking iron core is electrically connected to the induction power-taking board, the power board and the main board in turn.

[0008] The beneficial effects of the present invention are as follows: in actual use, the current sensor is connected to the single-core cable to collect the magnetic field signal near the cable in real time; the voltage plate is fixed near the cable to collect the electric field signal around the cable in real time; the power-taking iron core is connected to the single-core cable to provide power for the device by induction; the current sensor and the voltage plate sense the magnetic field and electric field signals generated by the wire in the surrounding space when a fault occurs in real time, and the signals are collected by the main board and sent to the data control center through the communication template for maintenance personnel to analyze the fault information and determine the fault location through the traveling wave double-end positioning method based on the collected current data and voltage data; this fault warning and positioning device is not limited by the resistance of the cable line, does not need to untie the cable terminal, monitors the current and voltage data in real time, and has high positioning efficiency and high positioning accuracy.

[0009] On the basis of the above technical solution, the present invention can also be improved as follows.

[0010] Furthermore, it also includes a box body and a box cover; the induction power board, power board, communication template and main board are arranged inside the box body, and the current sensor, voltage plate and power core are respectively extended to the outside of the box body through wires.

[0011] Furthermore, a first socket, a second socket and a third socket are provided on the outside of the box; the current sensor is electrically connected to the first socket through a wire and a plug, the inner pins of the first socket are electrically connected to the mainboard, the voltage plate is electrically connected to the second socket through a wire and a plug, the inner pins of the second socket are electrically connected to the mainboard, the power-taking core is electrically connected to the third socket through a wire and a plug, and the inner pins of the third socket are electrically connected to the induction power-taking board.

[0012] Furthermore, it also includes an antenna arranged on the outside of the box, and the antenna is electrically connected to the communication template.

[0013] Furthermore, a fourth plug interface is provided on the box body, the antenna is plugged into the fourth plug interface, and the inner pins of the fourth plug interface are electrically connected to the communication template.

[0014] Furthermore, a battery pack is provided in the box body, and the battery pack is electrically connected to the power board, and the battery pack is a storage battery.

[0015] Furthermore, the edge of the box cover and the box body are sealed by a waterproof strip.

[0016] Furthermore, the induction power board and the power board are isolated by a baffle.

[0017] Furthermore, it also includes a host switch button, which is electrically connected to the power board. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the explosion structure of the utility model;

[0021] Figure 4 This is a functional structure diagram of the utility model.

[0022] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0023] 1. Box cover; 2. Box body; 3. Current sensor; 4. Voltage plate; 5. Power supply core; 6. Main board; 7. Communication template; 8. Inductive power supply board; 9. Power board; 10. Battery pack; 11. Baffle; 12. Host power button. DETAILED DESCRIPTION

[0024] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0025] like Figures 1 to 4 As shown, Example 1, a cable line fault warning and positioning device, includes a current sensor 3, a voltage plate 4, a power supply core 5, an induction power supply board 8, a power supply board 9, a communication template 7 and a main board 6; the voltage plate 4, the current sensor 3 and the communication template 7 are respectively electrically connected to the main board 6, and the power supply core 5 is electrically connected to the induction power supply board 8, the power supply board 9 and the main board 6 in turn.

[0026] During actual use, the current sensor 3 is connected to the single-core cable to collect the magnetic field signal near the cable in real time; the voltage plate 4 is fixed near the cable to collect the electric field signal around the cable in real time; the power-taking iron core 5 is connected to the single-core cable to provide power for the device by induction; the current sensor 3 and the voltage plate 4 sense the magnetic field and electric field signals generated by the wire in the surrounding space when a fault occurs in real time. After the signal is collected by the main board 6, it is sent to the data control center through the communication template 7, so that maintenance personnel can analyze the fault information and determine the fault location through the traveling wave double-end positioning method based on the collected current data and voltage data; in specific implementation, the communication template 7 is a conventional and general wireless communication module plate, and the current sensor 3 adopts a split structure.

[0027] This fault warning and positioning device is not limited by the resistance of the cable line and does not require the cable terminals to be untied. It monitors current and voltage data in real time and has high positioning efficiency and accuracy.

[0028] Example 2: This example is a further improvement on Example 1, and its details are as follows:

[0029] The device also includes a housing 2 and a cover 1; an inductive power board 8, a power board 9, a communication module 7, and a mainboard 6 are disposed within the housing 2. A current sensor 3, a voltage plate 4, and a power core 5 are each extended to the exterior of the housing 2 via wires. The housing 2 and cover 1 protect the electronic components. The current sensor 3, voltage plate 4, and power core 5 are connected to the exterior of the housing 2 via flexible wires, allowing their installation positions to be adjusted based on actual needs without requiring adjustments to the entire housing 2.

[0030] In a specific implementation, the box cover 1 and the box body 2 are made of metal and have a sealed design, which can effectively resist the interference of strong magnetic fields.

[0031] Example 3: This example is a further improvement on Example 2, and its details are as follows:

[0032] The outer side of the housing 2 is provided with a first plug interface, a second plug interface, and a third plug interface. The current sensor 3 is electrically connected to the first plug interface via a wire and a plug. The inner pins of the first plug interface are electrically connected to the mainboard 6. The voltage plate 4 is electrically connected to the second plug interface via a wire and a plug. The inner pins of the second plug interface are electrically connected to the mainboard 6. The power supply core 5 is electrically connected to the third plug interface via a wire and a plug. The inner pins of the third plug interface are electrically connected to the inductive power supply board 8. If the exposed current sensor 3, voltage plate 4, and power supply core 5 are damaged, they can be quickly removed and replaced.

[0033] Example 4: This example is a further improvement on Example 2, and its details are as follows:

[0034] The device further comprises an antenna disposed outside the housing 2, the antenna being electrically connected to the communication template 7. The external antenna can prevent the closed housing 2 from interfering with the signal transmission of the communication template 7.

[0035] Example 5: This example is a further improvement on Example 4, and its details are as follows:

[0036] The box body 2 is provided with a fourth plug interface, the antenna is plugged into the fourth plug interface, and the inner pins of the fourth plug interface are electrically connected to the communication template 7. When the exposed antenna is damaged, it can be quickly disassembled and replaced.

[0037] Example 6: This example is a further improvement based on any one of Examples 2 to 5, and its details are as follows:

[0038] A battery pack 10 is provided in the housing 2 and is electrically connected to the power board 9. The battery pack 10 is a storage battery and can serve as a backup power source to provide power to the device when the induction power cannot meet the power requirements of the device.

[0039] Example 7: This example is a further improvement based on any one of Examples 2 to 6, and its details are as follows:

[0040] The edge of the box cover 1 is sealed with the box body 2 by a waterproof strip to prevent water from entering the box body 2 and damaging the internal electronic components.

[0041] Example 8: This example is a further improvement based on any one of Examples 1 to 7, and its details are as follows:

[0042] The induction power board 8 and the power board 9 are isolated by a baffle 11. This reduces the impact of the induction power board 8 on the power board 9 and also facilitates the wiring inside the host body.

[0043] Example 9: This example is a further improvement based on any one of Examples 1 to 8, and its details are as follows:

[0044] The main unit also includes a main unit switch button 12, which is electrically connected to the power board 9. The main unit power supply can be turned on and off according to demand, thereby achieving the purpose of starting the control device.

[0045] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A cable line fault warning and positioning device, characterized in that: The invention comprises a current sensor (3), a voltage plate (4), an electric core (5), an inductive electric plate (8), a power supply plate (9), a communication template (7) and a main board (6); the voltage plate (4), the current sensor (3) and the communication template (7) are electrically connected to the main board (6) respectively, and the electric core (5) is electrically connected to the inductive electric plate (8), the power supply plate (9) and the main board (6) in sequence.

2. A cable line fault early warning and positioning device according to claim 1, characterized in that: It also includes a box body (2) and a box cover (1); the induction power board (8), the power board (9), the communication template (7) and the main board (6) are arranged inside the box body (2), and the current sensor (3), the voltage plate (4) and the power core (5) are respectively extended to the outside of the box body (2) through wires.

3. A cable line fault warning and positioning device according to claim 2, characterized in that: The outer side of the box (2) is provided with a first plug interface, a second plug interface and a third plug interface; the current sensor (3) is electrically connected to the first plug interface through a wire and a plug, the inner pins of the first plug interface are electrically connected to the main board (6), the voltage plate (4) is electrically connected to the second plug interface through a wire and a plug, the inner pins of the second plug interface are electrically connected to the main board (6), the power-taking iron core (5) is electrically connected to the third plug interface through a wire and a plug, and the inner pins of the third plug interface are electrically connected to the induction power-taking board (8).

4. A cable line fault early warning and positioning device according to claim 2, characterized in that: It also includes an antenna arranged outside the box (2), and the antenna is electrically connected to the communication template (7).

5. A cable line fault early warning and positioning device according to claim 4, characterized in that: The box (2) is provided with a fourth plug interface, the antenna is plugged into the fourth plug interface, and the inner pins of the fourth plug interface are electrically connected to the communication template (7).

6. A cable line fault early warning and positioning device according to any one of claims 2 to 5, characterized in that: A battery pack (10) is provided in the box (2), the battery pack (10) is electrically connected to the power board (9), and the battery pack (10) is a storage battery.

7. A cable line fault early warning and positioning device according to claim 2, characterized in that: The edge of the box cover (1) and the box body (2) are sealed by a waterproof strip.

8. A cable line fault early warning and positioning device according to claim 1, characterized in that: The induction power board (8) and the power board (9) are isolated by a baffle (11).

9. A cable line fault early warning and positioning device according to claim 1, characterized in that: It also includes a host switch button (12), and the host switch button (12) is electrically connected to the power board (9).

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