Cable joint temperature monitoring intelligent sensor

Abstract

A cable joint temperature monitoring intelligent sensor disclosed by the present invention comprises a signal probe, a signal processing unit, a communication module and a power supply module, the signal probe comprises a built-in temperature measurement module and a shielding tube, the shielding tube sleeves the outer side of a cable temperature measurement position, the built-in temperature measurement module is installed on a cable, and the signal processing unit is connected with the communication module. The communication module is an external communication relay, the outer side of the signal probe is wrapped with a shell, the external communication relay is fixedly installed on the surface of the shell, the signal processing unit is a cable running state detection box, the power module is a non-closed mutual inductance power supply, and the non-closed mutual inductance power supply is installed at the end of the periphery of the shell. The integrated design is adopted, and the signal probe, the signal processing unit, the communication module and the power module are organically combined together to form a physically inseparable whole, so that deployment is more convenient, power consumption is reduced, and long-term stable work in a high-humidity and corrosive environment in a cable tunnel is facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of sensors, and in particular to an intelligent sensor for monitoring the temperature of a cable joint. Background Art

[0002] As my country's cities grow larger, cable lines account for a larger proportion of urban power supply lines. Currently, there are about 1.5 million kilometers of non-overhead cables and about 3 million joints. The number of cable failures increases with the number of kilometers. According to statistics, there are about 5 cable system failures per 1,000 kilometers per year. Insulation failure, especially the failure of cable joints, is the main factor in cable system failures, which seriously affects the normal operation of the distribution network.

[0003] It takes a long time for a cable to go from a slight partial discharge to insulation breakdown. Timely discovery and elimination of potential faults is the best way to ensure the reliable operation of the cable system. Using intelligent sensors for cable joint temperature monitoring to monitor and evaluate the cable operation status in real time can effectively support lean distribution management. It helps maintenance personnel to promptly discover cable faults and accurately locate them, improves cable maintenance efficiency, and ensures safe and reliable operation of the power grid.

[0004] Traditional temperature monitoring intelligent sensors mostly adopt a split design, which is inconvenient to deploy and has high power consumption. It is difficult to work stably for a long time in the high humidity and corrosive environment of cable tunnels. Therefore, a cable joint temperature monitoring intelligent sensor is needed to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose an intelligent sensor for monitoring the temperature of a cable joint.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] An intelligent sensor for monitoring cable joint temperature, comprising: a signal probe, a signal processing unit, a communication module and a power module, wherein the signal probe comprises a built-in temperature measuring module and a shielding tube, wherein the shielding tube is sleeved on the outside of a cable temperature measuring position, and the built-in temperature measuring module is installed on the cable;

[0008] The communication module is an external communication relay, the signal probe is wrapped with a shell on the outside, and the external communication relay is fixedly installed on the surface of the shell;

[0009] The signal processing unit is a cable operation status detection box;

[0010] The power supply module is a non-closed mutual inductance power supply, and the non-closed mutual inductance power supply is installed at the end of the outer periphery of the shell.

[0011] As a further technical solution of the present invention, two built-in temperature measuring modules are provided, and the two built-in temperature measuring modules are respectively installed on both sides of the cable temperature measuring position.

[0012] As a further technical solution of the present invention, the two built-in temperature measurement modules are connected via a temperature measuring thermocouple and a cable temperature measuring position.

[0013] As a further technical solution of the present invention, the cable operation status detection box collects temperature data of the signal probe downward.

[0014] As a further technical solution of the present invention, the signal probe realizes information interconnection through an external communication relay and a cable operation status detection box.

[0015] As a further technical solution of the present invention, the cable operation status detection box exchanges data with a cable operation status monitoring application terminal.

[0016] As a further technical solution of the present invention, the signal processing unit performs high-speed sampling and feature recognition processing on the temperature signal coupled to the signal probe, directly converts the measured physical quantity into a result representing the temperature size and outputs it to the cable operation status monitoring application terminal via wireless communication.

[0017] As a further technical solution of the present invention, the non-closed mutual inductance power supply is used to supply power to an external communication relay and a cable operation status detection box.

[0018] The beneficial effects of the present invention are as follows: an integrated design is adopted to organically combine the signal probe, signal processing unit, communication module and power module to form a physically inseparable whole, thereby facilitating deployment, reducing power consumption, and facilitating long-term stable operation in the high humidity and corrosive environment of the cable tunnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the installation structure of a built-in temperature measurement module of a cable joint temperature monitoring intelligent sensor proposed by the present invention;

[0020] Figure 2 This is a schematic diagram of the installation of an external communication relay of a cable joint temperature monitoring intelligent sensor proposed by the present invention;

[0021] Figure 3 This is a schematic diagram of the overall appearance of an intelligent sensor for monitoring cable joint temperature proposed by the present invention;

[0022] Figure 4 This is a schematic diagram of an intelligent sensor for monitoring cable joint temperature proposed by the present invention.

[0023] In the figure: 1. Built-in temperature measurement module; 2. Shielding tube; 3. External communication relay; 4. Cable operation status monitoring box; 5. Cable operation status monitoring application terminal; 6. Non-closed mutual inductance power supply. DETAILED DESCRIPTION

[0024] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0025] Please refer to the attached Figure 1 -Attached Figure 4 , an intelligent sensor for monitoring the temperature of a cable joint, comprising: a signal probe, a signal processing unit, a communication module and a power module, the signal probe comprising a built-in temperature measuring module 1 and a shielding tube 2, the shielding tube 2 is sleeved on the outside of the cable temperature measuring position, and the built-in temperature measuring module 1 is installed on the cable;

[0026] The communication module is an external communication relay 3, the outer side of the signal probe is wrapped with a shell, and the external communication relay 3 is fixedly installed on the surface of the shell;

[0027] The signal processing unit is a cable operation status detection box 4;

[0028] The power supply module is a non-closed mutual inductance power supply 6, and the non-closed mutual inductance power supply 6 is installed at the end of the outer periphery of the shell.

[0029] Please refer to the attached Figure 1 and 4 In a preferred embodiment, two built-in temperature measuring modules 1 are provided, and the two built-in temperature measuring modules 1 are respectively installed on both sides of the cable temperature measuring position.

[0030] Please refer to the attached Figure 1 In a preferred embodiment, the two built-in temperature measurement modules 1 are connected via temperature measurement thermocouples and cable temperature measurement positions.

[0031] In a preferred embodiment, the cable operation status detection box 4 collects temperature data of the signal probe.

[0032] In a preferred embodiment, the signal probe realizes information interconnection through an external communication relay 3 and a cable operation status detection box 4 .

[0033] In a preferred embodiment, the cable operation status detection box 4 performs data exchange with the cable operation status monitoring application terminal 5 .

[0034] In a preferred embodiment, the signal processing unit performs high-speed sampling and feature recognition processing on the temperature signal coupled to the signal probe, directly transforms the measured physical quantity into a result representing the temperature magnitude, and outputs it to the cable operation status monitoring application terminal 5 via wireless communication.

[0035] Please refer to the attached Figure 4 In a preferred embodiment, the non-closed mutual inductance power supply 6 supplies power to the external communication relay 3 and the cable operation status detection box 4.

[0036] From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects: an integrated design is adopted to organically combine the signal probe, signal processing unit, communication module and power module to form a physically inseparable whole, thereby facilitating deployment, reducing power consumption, and facilitating long-term and stable operation in the high humidity and corrosive environment of the cable tunnel.

[0037] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0038] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An intelligent sensor for monitoring cable joint temperature, characterized in that: include: A signal probe, a signal processing unit, a communication module and a power supply module, wherein the signal probe comprises a built-in temperature measurement module (1) and a shielding tube (2), wherein the shielding tube (2) is sleeved on the outside of a temperature measurement position of the cable, and the built-in temperature measurement module (1) is installed on the cable; The communication module is an external communication relay (3), the outer side of the signal probe is wrapped with a shell, and the external communication relay (3) is fixedly installed on the surface of the shell; The signal processing unit is a cable operation status detection box (4); The power supply module is a non-closed mutual inductance power supply (6), and the non-closed mutual inductance power supply (6) is installed at the end of the outer periphery of the shell.

2. The intelligent sensor for monitoring cable joint temperature according to claim 1, characterized in that: Two built-in temperature measurement modules (1) are provided, and the two built-in temperature measurement modules (1) are respectively installed on both sides of the cable temperature measurement position.

3. The intelligent sensor for monitoring cable joint temperature according to claim 2 is characterized in that: The two built-in temperature measurement modules (1) are both connected via a temperature measurement thermocouple and a cable temperature measurement position.

4. The intelligent sensor for monitoring cable joint temperature according to claim 1, characterized in that: The cable operation status detection box (4) collects temperature data of the signal probe downward.

5. The intelligent sensor for monitoring cable joint temperature according to claim 4, characterized in that: The signal probe realizes information interconnection through an external communication relay (3) and a cable operation status detection box (4).

6. The intelligent sensor for monitoring cable joint temperature according to claim 5, characterized in that: The cable operation status detection box (4) performs data exchange with the cable operation status monitoring application terminal (5).

7. The intelligent sensor for monitoring cable joint temperature according to claim 6, characterized in that: The signal processing unit performs high-speed sampling and feature recognition processing on the temperature signal coupled to the signal probe, directly transforms the measured physical quantity into a result representing the temperature magnitude, and outputs it to the cable operation status monitoring application terminal (5) through wireless communication.

8. The intelligent sensor for monitoring cable joint temperature according to claim 1, characterized in that: The non-closed mutual inductance power supply (6) supplies power to the external communication relay (3) and the cable operation status detection box (4).

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