机械与电子2024，Vol.42Issue(3)：50-53,59,5.
基于混沌时域反射技术的电力电缆绝缘缺陷检测方法
Detection Method of Power Cable Insulation Defect Based on Chaotic Time Domain Reflectometry
摘要
Abstract
In order to improve the detection accuracy of power cable insulation defects,a detection method of power cable insulation defects based on chaotic time domain reflectometry is proposed.The noise signal is decomposed in different modal components by variational modal decomposition method,the power cable signal is decomposed in high and low frequency components by adaptive wavelet packet decomposi-tion,and the component without local signal is filtered by threshold method to complete signal denoising.After the signal is denoised,the power cable signal is divided into reference signal and detection signal by chaotic time-domain reflectometry.The sampling processing is completed according to the signal and the reflection signal of the fault point of the power cable insulation position.The location of the defect is ob-tained from the time delay and amplitude information of the correlation peak,and the fault type is judged so as to realize the detection of power cable insulation defects.The experimental results show that the pro-posed method can comprehensively improve the accuracy of the detection results.关键词
混沌时域反射技术/电力电缆/绝缘缺陷检测/变分模态分解方法Key words
chaotic time domain reflectometry/power cable/insulation defect detection/variational mo-dal decomposition method分类
信息技术与安全科学引用本文复制引用
范亚洲..基于混沌时域反射技术的电力电缆绝缘缺陷检测方法[J].机械与电子,2024,42(3):50-53,59,5.基金项目
中国南方电网公司科技项目(GDKJXM20200473) （GDKJXM20200473）
