全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

基于蠕变模型的水树老化电缆绝缘自恢复机制

DOI: 10.13334/j.0258-8013.pcsee.2015.16.032, PP. 4271-4279

Keywords: 交联聚乙烯电缆,水树,电-机械应力,自恢复性,蠕变

Full-Text   Cite this paper   Add to My Lib

Abstract:

为了更准确地评估水树老化电缆的绝缘状态,研究了水树老化电缆出现的绝缘自恢复特性与水树微观结构变化之间的关联,并提出了基于蠕变模型的绝缘自恢复机制。在电缆的加速水树老化过程中,介质损耗因数及泄漏电流值随老化时间的增加而逐渐增大,老化区域出现明显水树枝,当撤离外施电压一段时间后,二者均有所下降,出现了绝缘自恢复现象。通过构建“珍珠串”有限元仿真模型和四元件蠕变模型,研究了水树微观结构变化同水树生长及自恢复之间的关系,并计算分析了水树蠕变过程对介质损耗因数及泄漏电流的影响。研究表明,在没有外施电压作用时,水树的蠕变过程使得水树通道关闭、水树空洞缩小,导致介质损耗因数和泄漏电流下降。因此,水树蠕变过程是电缆绝缘自愈的主要原因。

References

[1]  党智敏,亢婕,屠德民.新型抗水树聚乙烯绝缘电缆料的研究[J].中国电机工程学报,2002,22(1):8-11.Dang Zhimin,Kang Jie,Tu Demin.Study on new cable material of resisting water treeing in polyethylene [J].Proceedings of the CSEE,2002,22(1):8-11(in Chinese).
[2]  Ross R,Smit J J.Composition and growth of water trees in XLPE[J].IEEE Transactions on Electrical Insulation,1992,27(3):519-531.
[3]  党智敏,亢婕,屠德民,等.乙烯-丙烯酸共聚物改性聚乙烯的水树生长研究[J].中国电机工程学报,2001,21(9):18-21.Dang Zhimin,Kang Jie,Tu Demin,et al.Study on water treeing in polyethylene modified by ethylene-acrylic acid copolymer[J].Proceedings of the CSEE,2001,21(9):18-21(in Chinese).
[4]  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.Zheng Xiaoquan,Wang Jinfeng,Li Yanxiong.5 Transformation of electrical tree from water tree degradation in XLPE[J].Proceedings of the CSEE,2013,36(22):166-174(in Chinese).
[5]  周凯,陶霰韬,赵威,等.在水树通道内生成纳米TiO2的电缆修复方法及其绝缘增强机制研究[J].中国电机工程学报,2013,33(7):202-210.Zhou Kai,Tao Xiantao,Zhao Wei,et al.A cable rejuvenation method based on formation of Nano-TiO2 inside water tree and it’s insulation enhancement mechanism[J].Proceedings of the CSEE,2013,33(7):202-210(in Chinese).
[6]  郑晓泉,Chen G,Davies A E.交联聚乙烯电缆绝缘中的导电和非导电型电树枝[J].中国电机工程学报,2004,24(3):142-144.Zheng Xiaoquan,Chen G,Davies A E.Conducting and non-conducting electrical trees in XLPE[J].Proceedings of the CSEE,2004,24(3):142-144(in Chinese).
[7]  党智敏,亢婕,屠德民.EAA改性XLPE 中空间电荷和电树水树的关系[J].中国电机工程学报,2001,21(7):5-8.Dang Zhimin,Kang Jie,Tu Demin.Relationships of space charge accumulation with electrical and water treeing in XLPE modified by EAA[J].Proceedings of the CSEE,2001,21(7):5-8(in Chinese).
[8]  郑晓泉,Chen G,Davies A E.交联聚乙烯电缆绝缘中的双结构电树枝特性及其形态发展规律[J].中国电机工程学报,2006,26(3):79-85.Zheng Xiaoquan,Chen G,Davies A E.Characteristic and developing law of a double structure electrical tree in XLPE cable insulation[J].Proceedings of the CSEE,2006,26(3):79-85(in Chinese).
[9]  欧阳本红,赵健康,赵学童,等.加速水树老化对XLPE电力电缆绝缘性能的影响[J].高电压技术,2010,36(8):1942-1949.Ouyang Benhong,Zhao Jiankang,Zhao Xuetong.Influence of accelerated water tree aging on insulation of XLPE cables[J].High Voltage Engineering,2010,36(8):1942-1949(in Chinese).
[10]  朱晓辉.修复水树老化XLPE电缆的修复液注入技[J].高电压技术,2004,30(S1):16-18.Zhu Xiaohui.The repair liquid injection technology of xlpe cable for repairing water tree[J].High Voltage Engineering,2004,30(S1):16-17(in Chinese).
[11]  Hvidsten S,Kvande S,Ryen A,et al.Severe degradation of the conductor screen of service and laboratory aged medium voltage XLPE insulated cables[J].IEEE Transactions on Dielectrics and Electrical Insulation,2009,16(1):155-161.
[12]  Hernández-Mejía J C,Harley R,Hampton N,et al.Characterization of ageing for MV power cables using low frequency tan δ diagnostic measurements[J].IEEE Transactions on Dielectrics and Electrical Insulation,2009,16(3):862-870.
[13]  ean-Pierre Crine.Electrical,chemical and mechanical processes in water treeing[J].IEEE Transactions on Dielectrics and Electrical Insulation,1998,5(5):681-193.
[14]  Ross R.Water treeing theories current status,views and aims[C]//Proceedings of 1998 International Symposium on Electrical Insulating Materials.Toyohashi,Japan:IEEE,1998:535-540.
[15]  Hvidsten S,IIdstad E,Sletbak J.Understanding water treeing mechanisms in the development of diagnostic test methods[J].IEEE Transactions on Dielectrics and Electrical Insulation,1998,5(5):754-760.
[16]  Ross R.Inception and propagation mechanisms of water treeing[J].IEEE Transactions on Dielectrics and Electrical Insulation,1998,5(5):660-680.
[17]  Nakamura S,Kawai J,Shinagawa J,et al.Dynamism of interconnected channels in water-treed polyethylene [J].IEEE Transactions on Dielectrics and Electrical Insulation,2000,7(6):832-837.
[18]  Steven Boggs,Densley J,Kuang J.Mechanism for impulse conversion of water trees to electrical trees in XLPE[J].IEEE Transactions on Power Delivery,1998,13(2):310-315.
[19]  金天雄,黄兴溢,江平开,等.用有限元法分析水树尺寸对电场分布的影响[J].高电压技术,2008,34(3):489-491,564.KIM Chonung,Huang Xingyi,Jiang Pingkai,et al.Influences of water tree dimensions on its internal electric field distributions based on FEM[J].High Voltage Engineering,2008,34(3):489-491,564(in Chinese).
[20]  Thomas Andrew J,Saha Tapan K.A New dielectric response model for water tree degraded XLPE Insulation-Part A:Model Development with Small Sample Verification [J].IEEE Transactions on Dielectrics and Electrical Insulation,2008,15(4):1131-1143.
[21]  Abderrazzaq M H.Development of water tree structure in polyester resin[J].IEEE Transactions on Dielectrics and Electrical Insulation,2005,12(1):158-165.
[22]  Wang Zuoqian,Piero Marcolongo,Joseph A.Lemberg,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.
[23]  冯慈璋,马西奎.工程电磁场导论[M].北京:高等教育出版社,2000:56-60.Feng Cizhang,Ma Xikui.Introduction to engineering electromagnetic field[M].Beijing:Higher Education Press,2000:56-60(in Chinese).
[24]  何曼君,张红东,陈维孝,等.高分子物理[M].3版.上海:复旦大学出版社,2006:232-246.He Manjun,Zhang Hongdong,Chen Weixiao,et al.Polymer physics[M].3rd ed.Shanghai.China:Fudan University Press,2006:232-246(in Chinese).
[25]  董智贤.聚丙烯木塑复合材料蠕变行为的模拟与预测[J].高分子材料科学与工程,2010,26(5):89-92.Dong Zhixian.Modeling and prediction of creep behavior of PP/wood-flour composite[J].Polymer Materials Science and Engineering,2010,26(5):89-92.
[26]  Ritums J E,Mattozzi A,Gedde U W,et al.Mechanical properties of high‐density polyethylene and crosslinked high-density polyethylene in crude oil and its components [J].Journal of Polymer Science Part B: Polymer Physics,2006,44(4):641-648.
[27]  赵智大.高电压技术[M].北京:中国电力出版社,2006:53-56.Zhao Zhida.High voltage engineering[M].Beijing.China Electric Power Press,2006:53-56(in Chinese).

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133