Memory, submarine cable fault detection and diagnosis method, device, equipment and system

Abstract

The invention discloses a memory, a submarine cable fault detection and diagnosis method, a submarine cable fault detection and diagnosis device and submarine cable fault detection and diagnosis equipment, and the method comprises the steps: obtaining the vibration information data, collected by a vibration monitoring device, of an armor layer steel wire; comprising a vibration sensor is arranged on a submarine cable repeater; generating a corresponding vibration waveform according to the vibration information data; generating a detection and diagnosis result of the submarine cable according to the characteristics of the vibration waveform; the detection and diagnosis result comprises one or any combination of whether the submarine cable is abnormal in stress, whether the submarine cable is faulty, a fault type and a fault position; the submarine cable fault detection and diagnosis method is not affected by sea tide strong electromagnetic interference, so that judgment can be made in time even if the submarine cable is slightly mechanically damaged, and the accuracy of fault detection and diagnosis is improved.

Description

technical field [0001] The invention relates to the field of oil refining and processing, in particular to storage and submarine cable fault detection and diagnosis methods, devices, equipment and systems. Background technique [0002] Submarine cables are the key link to ensure power transmission and distribution and information communication of offshore wind farms, offshore platforms and islands. The structure of the submarine cable itself is complex, and it has the characteristics of high working voltage, large current, and harsh operating environment; during the laying and operation of the submarine cable, it may be affected by various factors such as coiling, stretching, hooking, and tidal shock. Faults; the types of faults mainly include insulation aging and deterioration, insulation layer wear, short circuit, external force damage, protective corrosion, etc. [0003] As the laying of submarine cables becomes more and more complicated, the problem of difficult fault d...

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Problems solved by technology

[0003] With the increasingly complicated laying of submarine cables, the problem of difficult fault diagnosis has gradually emerged, especially for some non-fiber composite submarine cables, whose fault signals cannot be monitored in real time and effectively transmitted through optical fiber sensing technology

[0004] The inventor found through research that in the prior art, for non-fiber composite submarine cables, the fault diagnosis method is mostly the traditional partial discharge detection method. This method is affected by the strong electromagnetic interference of the sea tide, and the original waveform of the signal is seriously distorted. The practical application of non-electrical faults caused by external force damage, rock wear, insulation erosion, etc. is not good, so that the submarine cable cannot be detected in time when a slight mechanical damage fault occurs

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