高压电器2025，Vol.61Issue(2)：111-119,9.DOI:10.13296/j.1001-1609.hva.2025.02.013
基于宽频阻抗谱的电力电缆缓冲层缺陷定位研究
Research on Power Cable Buffer Layer Defect Localization Based on Broadband Impedance Spectroscopy
摘要
Abstract
Power cable is an important tool to transmit electricity in power system,however,local ablation defects may occur in the cable buffer layer and affect the quality of electrical energy.In order to solve the problem,a kind of power cable buffer layer defect localization method based on broadband impedance spectroscopy technology is pro-posed in this paper.In the method,the localization curve obtained by the Fourier transform of the impedance spectros-copy is smoothed based on the envelope of the initial localization curve,which avoids the interference of distortion points.At the same time,effectiveness of the method is preliminarily verified by simulation model.In order to study its practical ability,experiments of power cable defect under different frequency bandwidth are performed.It is found through the experimental results that the accuracy and resolution become better with increase of frequency band-width.关键词
电力电缆/缓冲层缺陷/定位/宽频阻抗谱/傅里叶变换/包络Key words
power cable/buffer layer defect/localization/broadband impedance spectroscopy/Fourier trans-form/envelope引用本文复制引用
任广振,曹俊平,邹星宇,穆海宝,张浩天,黄勃..基于宽频阻抗谱的电力电缆缓冲层缺陷定位研究[J].高压电器,2025,61(2):111-119,9.基金项目
国网浙江省电力有限公司科技项目资助(5211DS20007P).Project Supported by Science and Technology Project of State Grid Zhejiang Electric Power Co.,Ltd.of China(5211DS20007P). （5211DS20007P）
