探究酸碱性环境对电缆绝缘老化的影响
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摘要
为研究环境酸碱度对电缆绝缘老化的影响,将电缆绝缘材料薄片样本和短电缆样本置于pH值不同的条件下进行加速老化实验,然后对不同老化样本的微观形貌和电气性能进行测试分析。结果表明:酸性或碱性的环境均会加速电缆绝缘的老化,降低电缆的使用寿命,绝缘材料在强酸和强碱性环境更容易形成贯穿性水树,引发电力电缆运行事故。短电缆样本在碱性环境下老化更严重,电气性能下降更快。
In order to study the influence of acid and alkaline environment on the ageing of cable insulation, XLPE chips and short power cable samples were aged under different pH value conditions, and the micro-structure and electrical properties of different ageing samples were compared. The results show that the acid and alkaline environment would accelerate the ageing of cable insulation and decrease the service life of cable. And the strong acid and strong alkaline environment is more conducive to form interpenetrating water tree in cable insulation, which will lead to power cable operation accident. The ageing degree of short cable samples in alkaline environment is worse, and the electrical properties decrease faster.
In order to study the influence of acid and alkaline environment on the ageing of cable insulation, XLPE chips and short power cable samples were aged under different pH value conditions, and the micro-structure and electrical properties of different ageing samples were compared. The results show that the acid and alkaline environment would accelerate the ageing of cable insulation and decrease the service life of cable. And the strong acid and strong alkaline environment is more conducive to form interpenetrating water tree in cable insulation, which will lead to power cable operation accident. The ageing degree of short cable samples in alkaline environment is worse, and the electrical properties decrease faster.
引文
[1]陈涛,魏娜娜,陈守娥,等.交联聚乙烯电力电缆水树产生机理检测及预防[J].电线电缆,2009(4):1-7.
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[13]耿蒲龙,杜亚昆,宋建成,等.温度和频率对XLPE电缆泄漏电流的影响[J].绝缘材料,2017,50(10):65-71.
[14]BOLARIN O,PETRI H,MARTTI A,et al.Application of dielectric response measurement on power cable systems[J].IEEE Transactions on Dielectrics and Electrical Insulation,2003:10(5):862-873.
[15]FARAHANI M,BORSI H,GOCKENBACH E.Dielectric response studies on insulating system of high voltage rotating machines[J].IEEE Transactions on Dielectrics and Electrical Insulation,2006,13(2):383-393.
[16]郑晓泉,王金锋,李彦雄.交联聚乙烯中水树枝向电树枝的转化[J].中国电机工程学报,2013,36(22):166-174.
[17]袁检,冯江,朱海刚,等.XLPE电力电缆介质引发水树机理的研究[J].高电压技术,2002,28(2):8-9.
[18]ABDERRAZZAQ M H.Development of water tree structure in polyester resin[J].IEEE Transactions on Dielectrics and Electrical Insulation.2005,12(1):158-165.
[2]BOGGS S,XU J.Water treeing-filled versus unfilled cable insulation[J].IEEE Electrical Insulation Magazine,2001,17(1):23-29.
[3]WANG Z,MARCOLONGO P,LEMBERG J A,et al.Mechanical fatigue as a mechanism of water tree propagation in TR-XLPE[J].IEEE Transactions on Dielectrics and Electrical Insulation,2012,19(1):321-330.
[4]何军,屠德民.XLPE电缆绝缘中水树的形成机理和抑制方法分析[J].绝缘材料,2008,41(6):54-58.
[5]巫松桢.多因子协同作用对绝缘材料环境老化的影响[J].电气应用,1986(3):3-7.
[6]赵健康,欧阳本红,赵学童,等.水树对XLPE电缆绝缘材料性能和微观结构影响的研究进展[J].绝缘材料,2010,43(5):50-56.
[7]侯振奇,周凯,何珉,等.以分子链疲劳断裂理论理解XLPE电缆绝缘水树生长规律[J].绝缘材料,2016,49(10):53-59.
[8]周凯,陶文彪,赵威,等.以分子取向理论理解交联聚乙烯中水树在不同温度下的生长特性[J].高电压技术,2014,40(12):3665-3673.
[9]张宗喜,曾宏.电力电缆绝缘整体老化测试技术的研究及应用[C]//中国电机工程学会高电压专业委员会2015年学术年会.
[10]毛文沛,周礼文.低温环境下电缆敷设施工和选型的探讨[J].电线电缆,2009(5):38-40.
[11]刘志勇.浅谈电缆线路维护方法[J].城市照明,2011(4):54-55.
[12]杨雁,杨丽君,徐积全,等.用于评估油纸绝缘热老化状态的极化/去极化电流特征参量[J].高电压技术,2013,39(2):336-341.
[13]耿蒲龙,杜亚昆,宋建成,等.温度和频率对XLPE电缆泄漏电流的影响[J].绝缘材料,2017,50(10):65-71.
[14]BOLARIN O,PETRI H,MARTTI A,et al.Application of dielectric response measurement on power cable systems[J].IEEE Transactions on Dielectrics and Electrical Insulation,2003:10(5):862-873.
[15]FARAHANI M,BORSI H,GOCKENBACH E.Dielectric response studies on insulating system of high voltage rotating machines[J].IEEE Transactions on Dielectrics and Electrical Insulation,2006,13(2):383-393.
[16]郑晓泉,王金锋,李彦雄.交联聚乙烯中水树枝向电树枝的转化[J].中国电机工程学报,2013,36(22):166-174.
[17]袁检,冯江,朱海刚,等.XLPE电力电缆介质引发水树机理的研究[J].高电压技术,2002,28(2):8-9.
[18]ABDERRAZZAQ M H.Development of water tree structure in polyester resin[J].IEEE Transactions on Dielectrics and Electrical Insulation.2005,12(1):158-165.