Cable joint monitoring system based on multi-parameter sensing explosion-proof box

Abstract

The invention relates to the technical field of cable fault monitoring, in particular to a cable joint monitoring system based on a multi-parameter sensing explosion-proof box. An acquisition module is arranged in the explosion-proof box and is connected with a processing module through a transmission module, and the acquisition module comprises a temperature sensor and a pressure sensor, which are respectively used for acquiring the surface temperature of the cable joint and the pressure in the explosion-proof box; the communication data line is connected with the acquisition modules and the converter, and the wireless transmitter and the wireless receiver are respectively connected with the converter and the upper computer. The explosion-proof box is arranged at a cable joint section to ensure the safety of a cable joint, and the electronic tag and the sensor arranged on the explosion-proof box are matched to monitor the temperature, the pressure and the physical position characteristic quantity of the cable intermediate joint, so the middle box body and the end box body of the fault monitoring explosion-proof box for sensing the multi-parameter state of the joint are connected through the flexible part; therefore, the cable bending device can meet the requirement for the bending environment of on-site cables, and is easy to mount and dismount, convenient to operate and high in on-site applicability.

Description

Technical field [0001] The present invention relates to the field of cable fault monitoring, and more particularly to a cable joint monitoring system based on multi-parameter perceived explosion-proof boxes. Background technique [0002] With the rapid development of urban grid, the power cable has been increasingly widely used in power systems, and the ratio of fire explosion accidents in cable disaster accidents is also increased. In order to alleviate the cable laying and the difficulty of operation, the intermediate joint will be added every other length cable. After the cable is used for a long time, its joint is susceptible to oxidation due to a long period of time, resulting in an increase in contact resistance at the cable connection point, and it is easy to cause the joint due to overheating due to overheating. The intermediate connector of the cable is the weakest link in the power cable line. When a failure causes a fire explosion accident, it will not only burn near t...

AI Technical Summary

Problems solved by technology

After the cable is used for a long time, its joints are prone to oxidation due to a long period of high current load, resulting in an increase in the contact resistance at the cable connection point. When a large current passes through, it is easy to cause the joints to burn through due to overheating.

The cable intermediate joint is the weakest link in the power cable line. When a fault occurs and a fire and explosion accident occurs, it will not only burn the adjacent cable, but also damage other surrounding equipment, causing secondary accidents, and bringing serious problems to the safe operation of the power grid. question

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