南方电网技术2024，Vol.18Issue(2)：133-141,9.DOI:10.13648/j.cnki.issn1674-0629.2024.02.015
压力作用下高压电缆缓冲层表面电阻特性及等效模型
Surface Resistance Characteristics and Equivalent Model of Buffer Layer in HV Cable Under Pressure
摘要
Abstract
The influences of pressure are not considered when testing the conductivity of semiconducting water-blocking buffer layer of HV cable.The surface resistance characteristics of buffer layer under different pressure are studied.Firstly,the surface resistance of buffer layer are tested,the statistical characteristics of which are explained through microstructure characteristics and nano-filler conductive mechanism.By applying loads of different weights on the surface resistance test electrode and the buffer layer between the electrodes,the relationship between the resistance value of the buffer layer and the external pressure is studied.Based on n-order resistance network and difference equations,the surface resistance model of buffer layer under pressure is established.The microscopic piezoresistive property of buffer layer and the simulation calculations of its model are used to analyze the characteristics of surface resistance test and the change law under different pressure.The results are helpful to understand the conductive characteristics of the buffer layer of HV cable under real operating pressure.关键词
高压电缆/缓冲层/表面电阻/压阻特性/差分方程组模型Key words
high voltage cable/buffer layer/surface resistance/piezo-resistance property/differential equations model分类
动力与电气工程引用本文复制引用
吴照国,黄会贤,王谦,吴海涛,包健康,李勇,刘佳,徐扬..压力作用下高压电缆缓冲层表面电阻特性及等效模型[J].南方电网技术,2024,18(2):133-141,9.基金项目
国家自然科学基金资助项目(52307162) （52307162）
国网重庆市电力公司科技项目(2022渝电科技22#) （2022渝电科技22#）
重庆市自然科学基金资助项目(CSTB2023NSCQ-MSX0667).Supported by the National Natural Science Foundation of China(52307162) （CSTB2023NSCQ-MSX0667）
the Science and Technology Project of State Grid Chongqing Electric Power Co.,Ltd.(2022Yudian Science 22#) （2022Yudian Science 22#）
the Natural Science Foundation of Chongqing(CSTB2023NSCQ-MSX0667). （CSTB2023NSCQ-MSX0667）
