高压电器2025，Vol.61Issue(3)：168-175,8.DOI:10.13296/j.1001-1609.hva.2025.03.020
中压电缆信道特性判别绝缘与半导电材料老化劣化状态方法
Method on Distinguishing Aging and Deterioration Condition of Insulation and Semi-conductive Materials via Channel Characteristics of Medium Voltage Cable
摘要
Abstract
In order to study the influence of aging degradation on signal propagation of medium voltage cable,the influence of dielectric parameters of key dielectric materials in the electromagnetic propagation of medium voltage cable,including the insulation material of cross-linking polyethylene and the semi-conductive shield material of cross linked polyethylene doped conductive carbon black composites,on the channel model after thermal aging is studied respectively.Firstly,a simulation model of medium voltage cable channel is set up by the distributed imped-ance network analysis,and the characteristic parameters of unaged state channel are obtained.Then,the variation of mechanical and electrical properties of XLPE insulating material and semi-conductive shielding material after ac-celerated thermal aging is studied.It is found that the dielectric constant and the loss increase after aging of XLPE,while the conductivity of semi-conductive shielding material decreases and the loss increases.Finally,the key pa-rameters of the material before and after material aging are brought into the cable channel model to calculate the in-fluence of aging deterioration on cable channel characteristic parameters,finding that the characteristic parameters decrease gradually with the extend of aging.关键词
中压电缆/老化/信道特性/交联聚乙烯/半导电材料Key words
medium voltage cable/aging/channel characteristics/crosslinked polyethylene/semi-conductive material引用本文复制引用
李陈莹,陈杰,刘建,胡丽斌,王昱力,谭笑,曹京荥,张伟..中压电缆信道特性判别绝缘与半导电材料老化劣化状态方法[J].高压电器,2025,61(3):168-175,8.基金项目
基金国家电网公司总部科技项目(5700-202118195A-0-0-00).Project Supported by Science and Technology Project of SGCC(5700-202118195A-0-0-00). （5700-202118195A-0-0-00）
