碱性溶液中电缆水树的生长特性与预修复效果研究

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英文篇名：Water Tree Propagation Characteristics and Prior Rejuvenation Effects of Cable in Alkaline Solution 作者：杨晓华 ; 姜春莹 ; 方云辉 ; 汪从敏 ; 张春烁 ; 周凯 英文作者：YANG Xiaohua;JIANG Chunying;FANG Yunhui;WANG Congmin;ZHANG Chunshuo;ZHOU Kai;State Grid Ningbo Electric Power Bureau-Power Grid New Material Application Joint Laboratory;School of Electrical Engineering and Information, Sichuan University; 关键词：交联聚乙烯电缆 ; 碱性溶液 ; 水树 ; 生长特性 ; 预修复 ; 抑制作用 英文关键词：XLPE cable;;alkaline solution;;water tree;;propagation characteristics;;prior rejuvenation;;inhibition effect 中文刊名：JYCT 英文刊名：Insulating Materials 机构：国网宁波供电公司-电网新材料应用联合实验室;四川大学电气信息学院; 出版日期：2019-05-14 16:11 出版单位：绝缘材料 年：2019 期：v.52 基金：国网浙江省电力公司科技项目(5211NB15014W) 语种：中文; 页：JYCT201905012 页数：5 CN：05 ISSN：45-1287/TM 分类号：60-64

摘要

为了研究碱性溶液对电缆水树生长特性的影响及预先注入修复液对水树的抑制效果,使用pH值为13的氢氧化钠溶液对电缆样本进行加速水树老化,并对其中一个样本预先注入修复液。结果表明:碱性样本比中性样本水树长度更短,且水树孔洞密度小;碱性预修复样本比碱性样本的水树更短,且水树孔洞密度小。说明水树在碱性溶液中的生长速度比在中性溶液中的慢,水树孔洞更少,且预先注入修复液对碱性溶液下电缆中水树的生长有一定的抑制作用。
        In order to study the influence of alkaline solution on the water tree propagation characteristics and inhibition effect of prior rejuvenation on the water tree, accelerated water tree ageing experiments were conducted on cable samples in sodium hydroxide solution whose pH value was 13, and one sample of them was prior rejuvenated. The results show that the length of water tree in alkaline sample is shorter than that in neutral sample, and there is less void in water tree of alkaline sample. The length of water tree in alkaline prior rejuvenation sample is shorter than that in alkaline sample, and there is less void in water tree of alkaline prior rejuvenation sample. It is indicated that the growth rate of water tree in alkaline solution is slower than that in neutral solution, and there are less voids in water tree in alkaline solution. The prior rejuvenation can inhibit the growth of water tree in XLPE cables in alkaline solution.

引文

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