一种单芯海缆接地环流故障检测方法及系统
By acquiring and analyzing the current data of a single-core submarine cable, generating curve equations, and combining them with diagnostic algorithms, the problem of inaccurate analysis of the impedance of the metallic layer of submarine cables in existing technologies has been solved, enabling precise detection of the operating status of submarine cables.
CN114755527BActive Publication Date: 2026-07-17DATANG NORTH CHINA ELECTRIC POWER TEST & RESEARCH INSTITUTE +2
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- DATANG NORTH CHINA ELECTRIC POWER TEST & RESEARCH INSTITUTE
- Filing Date
- 2022-02-28
- Publication Date
- 2026-07-17
AI Technical Summary
Technical Problem
Existing technologies cannot accurately analyze the equivalent impedance between the metal layers in a single-core submarine cable during operation, making it impossible to detect subtle impedance-related defects.
Method used
By acquiring real-time current data of the single-core submarine cable core, sheath, and armor layer, the current amplitude and phase are calculated using a preset mathematical model to generate curve equations. Combined with a preset diagnostic algorithm, it is determined whether there is a fault in the submarine cable grounding loop current.
Benefits of technology
It enables accurate analysis of the operating status of submarine cables, detects minute impedance defects, and improves the accuracy of fault detection.
✦ Generated by Eureka AI based on patent content.
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Figure CN114755527B_ABST
Abstract
本发明公开了一种单芯海缆接地环流故障检测方法及系统，通过实时获取单芯海缆线芯层、护套接地层及铠装接地层各层的电流数据，所述电流数据，包括：幅值和相位信息；根据各层的电流数据，利用预设数学模型，计算线芯不同电流，所对应的护套和铠装电流的幅值和相位；通过实时监测不同线芯电流下所对应的护套和铠装的电流幅值和相位，利用预设算法，生成护套接地电流幅值、护套接地电流相位、铠装接地电流幅值、铠装接地电流相位分别随线芯电流变化而变化的曲线方程；通过预设样本库，利用预设诊断算法，判断单芯海缆接地环流是否故障。通过增加测量位置和增加测量电流的相位信息来达到准确分析电缆运行状态，并查找海缆护套和铠装的隐藏缺陷。
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