Leakage cable monitoring device suitable for public and private network communication

Abstract

The utility model relates to the technical field of power cable monitoring, in particular to a leakage cable monitoring device suitable for public and private network communication, which comprises a grounding circulating current monitoring device, an HFCT (High Frequency Current Transformer) partial discharge monitoring device and an optical fiber temperature measuring device, the grounding ring current monitoring equipment and the HFCT partial discharge monitoring equipment are electrically connected with a grounding ring current acquisition unit and an HFCT partial discharge acquisition unit respectively, and through the arrangement of the grounding ring current monitoring equipment and the optical fiber temperature measurement equipment, when a cable outer sheath is damaged, multipoint grounding faults, current increase and cable heating and temperature rise can be caused, and the grounding ring current acquisition unit and the HFCT partial discharge acquisition unit are not damaged. At the moment, the grounding circulating current sensor and the temperature measurement optical fiber sensor collect abnormal signals, data processors arranged in the corresponding collection units carry out data analysis on the signals and upload the signals to the grounding circulating current monitoring equipment and the optical fiber temperature measurement equipment in a networking mode, and then the grounding circulating current monitoring equipment and the optical fiber temperature measurement equipment carry out data analysis. Automatically diagnosing and uploading a message to a server, and summarizing, storing and secondarily analyzing the data by the server.

Description

Technical Field

[0001] This utility model relates to the field of power cable monitoring technology, specifically a device for monitoring leaky cables in public and private network communications. Background Technology

[0002] Communication cables are cables used to transmit telephone, telegram, fax documents, television and radio programs, data, and other electrical signals. They are made of one or more pairs of insulated conductors twisted together. Compared with overhead power lines, communication cables have advantages such as larger communication capacity, higher transmission stability, better confidentiality, and less susceptibility to natural conditions and external interference. They play an important role in highways, railways, and tunnels. To ensure the normal operation of the cables, real-time monitoring of the cables is necessary during use to prevent malfunctions. Leaky cables, due to their harsh operating environments, gradually deform, age, and loosen their joints over time, leading to poor signal communication and failing to meet actual wireless communication requirements. Therefore, regular inspection of leaky cables is essential.

[0003] A leaky cable monitoring device, as disclosed in authorization announcement number CN204044289U, includes: a signal sampling unit, a signal comparison unit, and an output unit connected in sequence; the signal comparison unit is connected to a memory storing at least one leaky cable status threshold signal; the signal sampling unit has an input terminal connected to a conductor inside the leaky cable. This device enables automatic continuous detection without manual equipment adjustment, completing detection during the normal operation of the leaky cable and continuously outputting the leaky cable status to ensure constant monitoring and rapid detection of leaky cable anomalies, minimizing the impact on signal transmission. However, this invention lacks fiber optic temperature measurement and HFCT partial discharge monitoring, hindering comprehensive real-time monitoring of the leaky cable and affecting the timeliness of maintenance. Therefore, we propose a leaky cable monitoring device suitable for public and private network communications, which adds fiber optic temperature measurement and HFCT partial discharge monitoring equipment, improving the monitoring data of the leaky cable and enhancing the safety and continuity of cable use. Utility Model Content

[0004] The purpose of this invention is to provide a leaky cable monitoring device suitable for public and private network communications, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A leaky cable monitoring device for public and private network communication includes a grounding current monitoring device, an HFCT partial discharge monitoring device, and an optical fiber temperature measuring device. The grounding current monitoring device and the HFCT partial discharge monitoring device are respectively electrically connected to a grounding current acquisition unit and an HFCT partial discharge acquisition unit.

[0007] The grounding current acquisition unit is electrically connected to several grounding current sensors, and the HFCT partial discharge acquisition unit is electrically connected to several HFCT partial discharge sensors.

[0008] Both the grounding current sensor and the HFCT partial discharge sensor are snap-fitted and installed on the outside of the cable grounding wire. The fiber optic temperature measurement device includes a temperature-measuring fiber optic sensor, which is fixedly installed on the outside of the cable.

[0009] Preferably, the grounding current monitoring device, the HFCT partial discharge monitoring device, and the fiber optic temperature measuring device are electrically connected to the server, and the server is electrically connected to the display terminal.

[0010] Preferably, the acquisition unit includes an amplifier, an acquisition card, and a data processor, and the acquisition unit includes an anti-interference unit, which includes a first layer of anti-interference and a second layer of anti-interference.

[0011] Preferably, after data acquisition, the first layer of anti-interference excludes the synchronization signal, then performs signal comparison to exclude continuous periodic interference signals, and finally extracts pulses from the signal and determines whether the predetermined number of cycles has been reached.

[0012] Preferably, after the first layer of anti-interference is completed, when the signal value reaches a predetermined number of cycles, the second layer of anti-interference is classified and excluded to remove discontinuous periodic signals and random interference.

[0013] Preferably, the server is used to provide data aggregation, storage, and secondary analysis functions, and can provide a user interface.

[0014] Preferably, the HFCT partial discharge monitoring device uses a statistical analysis method, mainly by analyzing the regular characteristics of the phase spectrum to determine the type of leakage discharge.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This device is applicable to the monitoring of leaky cables in public and private network communications. By setting up HFCT partial discharge monitoring equipment and fiber optic temperature measurement equipment, it uses statistical analysis to analyze the characteristics of phase spectrum to determine the discharge type, so that staff can detect insulation defects in advance, solve problems in a targeted manner, and prevent power outages caused by insulation breakdown.

[0017] 2. This device for monitoring leaky cables in public and private network communications can eliminate interference in the collected signals through two layers of anti-interference measures in the acquisition unit, thereby extracting valuable data, reducing misjudgments by staff, and improving the practical effect of the device. Attached Figure Description

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

[0019] Figure 2 This is a partial structural schematic diagram of the present invention;

[0020] Figure 3 This is a schematic diagram of the anti-interference unit structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the acquisition unit structure of this utility model.

[0022] In the diagram: 100, display terminal; 101, server; 102, grounding current monitoring equipment; 103, HFCT partial discharge monitoring equipment; 104, fiber optic temperature measurement equipment; 105, grounding current acquisition unit; 106, HFCT partial discharge acquisition unit; 107, cable; 108, power cable grounding box; 200, grounding current sensor; 201, HFCT partial discharge sensor; 202, temperature measurement fiber optic sensor. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-4 As shown, this utility model provides a technical solution:

[0025] A leaky cable monitoring device suitable for public and private network communication includes a grounding current monitoring device 102, an HFCT partial discharge monitoring device 103, and an optical fiber temperature measuring device 104. The grounding current monitoring device 102 and the HFCT partial discharge monitoring device 103 are electrically connected to a grounding current acquisition unit 105 and an HFCT partial discharge acquisition unit 106, respectively. The grounding current acquisition unit 105 is electrically connected to a plurality of grounding current sensors 200, and the HFCT partial discharge acquisition unit 106 is electrically connected to a plurality of HFCT partial discharge sensors 201. The grounding current sensors 200 and the HFCT partial discharge sensors 201 are both snap-fitted and installed on the outside of the grounding wire of the cable 107. The optical fiber temperature measuring device 104 includes a temperature-measuring optical fiber sensor 202, which is fixedly installed on the outside of the cable 107.

[0026] In this embodiment, preferably, the grounding current monitoring device 102, the HFCT partial discharge monitoring device 103, and the fiber optic temperature measuring device 104 are electrically connected to the server 101, and the server 101 is electrically connected to the display terminal 100.

[0027] In this embodiment, preferably, the acquisition unit includes an amplifier, an acquisition card, and a data processor, and the acquisition unit includes an anti-interference unit, which includes a first layer of anti-interference and a second layer of anti-interference.

[0028] In this embodiment, preferably, after data acquisition, the first layer of anti-interference excludes the synchronization signal, then performs signal comparison to exclude continuous periodic interference signals, and finally extracts pulses from the signal and determines whether a predetermined number of cycles has been reached.

[0029] In this embodiment, preferably, after the first layer of anti-interference is completed, when the signal value reaches a predetermined number of cycles, the second layer of anti-interference is classified and excluded to exclude discontinuous periodic signals and random interference.

[0030] In this embodiment, preferably, the server 101 is used to provide data aggregation, storage and secondary analysis functions, and can provide a user display interface.

[0031] In this embodiment, preferably, the HFCT partial discharge monitoring device 103 adopts a statistical analysis method, mainly by analyzing the regular characteristics of the phase spectrum to determine the leakage discharge type.

[0032] In this embodiment, a leaky cable monitoring device for public and private network communication is used. Through the setup of a grounding current monitoring device 102 and a fiber optic temperature measuring device 104, when the outer sheath of the cable 107 is damaged, it will cause multiple grounding faults, increasing the current and causing the cable to heat up. At this time, the grounding current sensor 200 and the fiber optic temperature sensor 202 collect abnormal signals. The data processor in the corresponding acquisition unit analyzes the signals and uploads them to the grounding current monitoring device 102 and the fiber optic temperature measuring device 104 via a network. The grounding current sensor 200 uses a Honeywell BMS series current sensor, and the fiber optic temperature sensor 202 uses an OPSENS general-purpose fiber optic temperature sensor. The grounding current monitoring device 102 and the fiber optic temperature measuring device 104 then analyze the data, automatically diagnose the problem, and upload a message to the server 101. The server 101 summarizes, stores, and performs secondary analysis on the data, and finally transmits it to the display terminal 100. This allows staff to detect insulation defects in advance and prevent power outages caused by insulation breakdown. The acquisition unit includes two layers of anti-interference, which can eliminate interference in the acquired signals, thereby extracting valuable data, reducing misjudgments, and improving the practical effect of the device. The HFCT partial discharge sensor 201, installed outside the grounding wire of cable 107, is used to monitor defects in the main insulation of cable 107. The HFCT partial discharge sensor 201 uses the Zhongke HFCT sensor, which employs statistical analysis methods, primarily analyzing the regular characteristics of the phase spectrum to determine the discharge type, thus enabling targeted maintenance of cable 107. It possesses a certain degree of sensitivity, timeliness, and ease of use.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A leaky cable monitoring device suitable for public and private network communication, comprising a grounding current monitoring device (102), an HFCT partial discharge monitoring device (103), and an optical fiber temperature measuring device (104), characterized in that: The grounding current monitoring device (102) and the HFCT partial discharge monitoring device (103) are electrically connected to the grounding current acquisition unit (105) and the HFCT partial discharge acquisition unit (106), respectively. The grounding current acquisition unit (105) is electrically connected to several grounding current sensors (200), and the HFCT partial discharge acquisition unit (106) is electrically connected to several HFCT partial discharge sensors (201). The grounding current sensor (200) and the HFCT partial discharge sensor (201) are both snap-fitted and installed on the outside of the grounding wire of the cable (107). The fiber optic temperature measuring device (104) includes a temperature measuring fiber optic sensor (202), which is fixedly installed on the outside of the cable (107).

2. The leaky cable monitoring device for public and private network communication according to claim 1, characterized in that: The grounding current monitoring device (102), the HFCT partial discharge monitoring device (103), and the fiber optic temperature measuring device (104) are electrically connected to the server (101), and the server (101) is electrically connected to the display terminal (100).

3. The leaky cable monitoring device for public and private network communication according to claim 1, characterized in that: The acquisition unit includes an amplifier, an acquisition card, and a data processor. The acquisition unit also includes an anti-interference unit, which includes a first layer of anti-interference and a second layer of anti-interference.

4. A leaky cable monitoring device for public and private network communication according to claim 3, characterized in that: After data acquisition, the first layer of anti-interference excludes the synchronization signal, then compares the signals to exclude continuous periodic interference signals, and finally extracts the pulses from the signals and determines whether the predetermined number of cycles has been reached.

5. A leaky cable monitoring device for public and private network communication according to claim 3, characterized in that: After the first layer of anti-interference is completed, when the signal value reaches a predetermined number of cycles, the second layer of anti-interference classifies and excludes non-continuous periodic signals and random interference.

6. A leaky cable monitoring device for public and private network communication according to claim 2, characterized in that: The server (101) is used to provide data aggregation, storage and secondary analysis functions, and can provide a user interface.

7. A leaky cable monitoring device for public and private network communication according to claim 2, characterized in that: The HFCT partial discharge monitoring device (103) adopts a statistical analysis method, mainly by analyzing the regular characteristics of the phase spectrum to determine the leakage discharge type.

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