高电压技术2025，Vol.51Issue(10)：4900-4912,13.DOI:10.13336/j.1003-6520.hve.20250070
频域反射法在海缆局部缺陷诊断中的应用评述
Review of the Application on Frequency Domain Reflectometry for the Diagnosis of Localized Defects in Submarine Cable
摘要
Abstract
Frequency domain reflectometry(FDR)has significant application prospects in the diagnostic localization of long-distance submarine cables.The FDR method primarily involves two technical approaches,namely,the broadband impedance spectrum(BIS)and the reflection coefficient spectrum(RCS).This paper systematically reviews and compares the differences between the two techniques for cable defect diagnosis from the perspectives of principle,diagnosis effect and adaptability to submarine cables.Firstly,in terms of principle,BIS relies on comparison with intact cables data to identify defects,while RCS directly reflects the signal's reflection intensity.The core variables and mathematical trans-formations between the two are different.Additionally,in the diagnosis effect,this paper summarizes and analyzes the current research progress,and simulates cable defects of different positions,ranges and types;meanwhile,this paper com-pares the diagnostic effects of the two techniques,and it is found that RCS performs better in locating inductive defects while BIS provides more accurate diagnosis for defects in the later segments of the cable.Finally,considering the specific charac-teristics of submarine cable diagnostics,the paper analyzes the adaptability of both techniques.Due to its stronger noise resistance,BIS method achieves higher positioning accuracy in long-distance transmission and high-noise environments.Through comparative analysis,this paper provides theoretical guidance for selecting the appropriate FDR technique in dif-ferent application scenarios and offers a novel perspective for the maintenance and submarine cables fault diagnosis.关键词
频域反射法/电缆缺陷定位/首端输入阻抗谱/反射系数谱/海底电缆Key words
frequency domain reflectometry/cable defect location/broadband impedance spectrum/reflection coefficient spectrum/submarine cable引用本文复制引用
王昊月,祝一一,李猛,王励,张佳宝,和敬涵..频域反射法在海缆局部缺陷诊断中的应用评述[J].高电压技术,2025,51(10):4900-4912,13.基金项目
国家自然科学基金(52407158) （52407158）
国家重点研发计划(2023YFB2406900) （2023YFB2406900）
国家资助博士后研究人员计划(GZC20240098).Project supported by National Natural Science Foundation of China(52407158),National Key R&D Program of China(2023YFB2406900),Postdoctoral Fellowship Program of CPSF(GZC20240098). （GZC20240098）
