Cable online detection and fault diagnosis system

Abstract

The invention provides a cable online detection and fault diagnosis system, which comprises a background monitoring module, a plurality of acquisition terminals, a communication module, a grounding current sensor and a fault current sensor, wherein the grounding current sensor and the fault current sensor are respectively connected with the acquisition terminals for acquiring working electrical parameters of the cable and transmitting the parameters to the acquisition terminals; the communication module is arranged in the acquisition terminal, and the working electrical parameters are transmitted to the backstage monitoring module via the communication module; and the backstage monitoring module acquires the working electrical parameters and according to a preset condition, corresponding alarming information is sent to the user terminal. Thus, continuous online detection on the cable can be realized, a change state curve for each electrical parameter is acquired, the corresponding information can be timely sent to the user terminal via the communication module, and the insulation state of the cable can be judged more accurately.

Description

technical field [0001] The invention relates to the technical field of cable detection, in particular to an online cable detection and fault diagnosis system. Background technique [0002] During the use of the existing power cables, the cables may be damaged due to external force damage, insulation damage, termite damage, intermediate joints, cross-connection grounding boxes soaked in water, etc. Damage to power cables can cause great harm and economic loss. [0003] In the prior art, methods such as power failure measurement of sheath insulation resistance, manual measurement of sheath circulation, and damage inspection in cable trenches are usually used. However, the above method requires power failure measurement, which affects the availability of the line, and the efficiency of manual measurement is low and the workload is large. The regular measurement also makes it impossible to detect and deal with the defects of the insulation sheath of the cable in time. [0004...

AI Technical Summary

Problems solved by technology

[0006] In view of the deficiencies of the prior art above, the purpose of the present invention is to provide an online cable detection and fault diagnosis system, aiming at solving the problems of difficult cable detection, high cost and high risk in the prior art

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