西安工程大学学报2026，Vol.40Issue(2)：11-19,9.DOI:10.13338/j.issn.1674-649x.2026.02.002
互相关功率谱-调频连续波的配网电缆缺陷定位方法
Cable defect location method based on cross-correlation power spectrum-frequency modulated continuous wave
摘要
Abstract
To address the issues of low detection sensitivity and poor positioning accuracy in tradi-tional frequency-modulated continuous wave(FMCW)cable defect location methods,a cross-cor-relation power spectrum(CCPS)-FMCW cable defect location method was proposed.First,the distributed parameter model of power cables and the characteristics of FMCW signals were de-scribed in detail.Then,the fundamental principle and specific implementation steps of the CCPS-FMCW cable defect location method were elaborated.The CCPS-FMCW method calculated the CCPS of the incident and reflected signals.The CCPS within a specific frequency bandwidth range was multiplied by the Hanning window and then used as the characteristic signal.Subsequently,the Fourier transform was performed to generate the cable defect diagnosis spectrum.Finally,a 500 m simulation cable defect location platform and a 400 m real cable defect location platform were established.The experimental results demonstrate that the CCPS-FMCW method can effec-tively detect and accurately locate defects in distribution network power cables,achieving a rela-tive positioning error of less than 0.73%.This verifies the feasibility and effectiveness of the pro-posed method.Compared with traditional approaches,the CCPS-FMCW method exhibits superior performance in detecting defects over long distances.关键词
电力电缆/缺陷定位/互相关功率谱/调频连续波/缺陷诊断谱图Key words
power cable/defect location/cross-correlation power spectrum/frequency-modulated continuous wave/defect diagnosis spectrum分类
信息技术与安全科学引用本文复制引用
戴瑞成,韩晓昆,贾东明,赵璧,陈东巍,何维晟..互相关功率谱-调频连续波的配网电缆缺陷定位方法[J].西安工程大学学报,2026,40(2):11-19,9.基金项目
国家自然科学基金资助项目(52307162) （52307162）
重庆市自然科学基金(CSTB2023NSCQ-MSX0667) （CSTB2023NSCQ-MSX0667）
