Fault point detection device and method for mine power transmission cable

Abstract

The invention relates to the technical field of cable fault detection, and particularly relates to a fault point detection device and method for a mine power transmission cable. The device comprises aplurality of control circuits arranged at a cable body, wherein each control circuit comprises an alternating-current contactor, a fuse, a current acquisition module, a boost control circuit and a main controller; the alternating-current contactors and the fuses are connected into the cable body in series; the alternating-current contactors and the fuses at the plurality of control circuits divide the cable body into a plurality of independent detection node sections at equal intervals; the current acquisition module is arranged in the middle of the corresponding detection node section, a detection endpoint M and a detection endpoint N are arranged at the two ends of each detection node section, and traveling wave detection circuits are arranged at the detection endpoint M and the detection endpoint N; and the main controllers at the plurality of control circuits communicate with an upper computer through a communication unit. The method is implemented based on the device. According to the invention, fault point detection is simpler and more convenient, and safe transmission of the whole cable can be guaranteed.

Description

technical field [0001] The invention relates to the technical field of cable fault detection, in particular to a fault point detection device and method for mine power transmission cables. Background technique [0002] As a medium for electric energy transmission, power cables have been more and more widely used due to their advantages such as less impact on the environment, high reliability, less land occupation and beautifying the city. During the operation of the cable, various failures will occur due to aging and deterioration of the insulation, overheating, overvoltage, mechanical damage, corrosion, and moisture in the insulation. The cable is directly buried in the ground or in the cable trench, and it is difficult to directly see the fault point after a fault. In order to quickly find the location of the fault point and shorten the fault repair time, it is necessary to use a dedicated cable fault finding instrument and correct method. [0003] Common cable faults mai...

AI Technical Summary

Problems solved by technology

[0003] Common cable faults mainly include faults caused by overload and short circuit, and the existing equipment and methods for detecting cable fault points are relatively cumbersome

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