Research on On-Line Monitoring Method of Cable Insulation Based on Signal Injection

被引：0
|
作者：
Niu, Lin [1 ]
Wu, Guiying [1 ]
Xu, Zhangsheng [1 ]
机构：
[1] Hunan Univ, Coll Elect & Informat Engn, Changsha, Peoples R China
来源：
2021 IEEE 12TH ENERGY CONVERSION CONGRESS AND EXPOSITION - ASIA (ECCE ASIA) | 2021年
关键词：
cable insulation; signal Injection; on-line monitoring; dielectric loss;
D O I：
10.1109/ECCE-Asia49820.2021.9479090
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Underground cables are widely used in urban distribution network The insular state of cable is related to the safety and reliability of power supply. In this paper, a cable insulation monitoring method based on signal injection is proposed. The low frequency signal is injected and the dielectric loss parameters of the cable are obtained. The insulation state of the cable is reflected by the dielectric loss parameter of the injected signal. Considering the accuracy of the injected signal in cable insular monitoring, double terminal sampling is adopted. The variational mode decomposition and signal entropy are used to process the sampled signal and extract the injection signal to reduce the noise interference in the sampling signal. The feasibility and effectiveness of this method is verified by simulation.
引用
收藏
页码：1844 / 1849
页数：6
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