高压交联聚乙烯电缆缓冲层白色粉末烧蚀特性仿真研究  

Simulation Study on White Powder Ablation Characteristics in Buffer Layer of High-Voltage Cross-Linked Polyethylene Cables

作　　者：钟理鹏 刘雨丰 段肖力 刘三伟 李文杰 李绍斌 高智益 李斌 ZHONG Lipeng;LIU Yufeng;DUAN Xiaoli;LIU Sanwei;LI Wenjie;LI Shaobin;GAO Zhiyi;LI Bin(College of Electrical and Information Engineering,Hunan University,Changsha 410082,China;State Grid Hunan Electric Power Company Limited Research Institute,Changsha 410208,China;China Electric Power Research Institute Co.,Ltd.,Wuhan 430074,China;Changlan Cable Technology Group Co.,Ltd.,Changsha 410012,China;State Grid Corporation of China,Beijing 100031,China;Jiangsu Shangshang Cable Group Co.,Ltd.,Liyang 213300,China)

机构地区：[1]湖南大学电气与信息工程学院,湖南长沙410082 [2]国网湖南省电力有限公司电力科学研究院,湖南长沙410208 [3]中国电力科学研究院有限公司,湖北武汉430074 [4]长缆科技集团股份有限公司,湖南长沙410012 [5]国家电网有限公司,北京100031 [6]江苏上上电缆集团有限公司,江苏溧阳213300

出　　处：《湖南电力》2025年第1期73-78,共6页Hunan Electric Power

基　　金：国家自然科学基金项目(52107147);国网湖南省电力有限公司科技项目(5216A5220026)。

摘　　要：针对高压交联聚乙烯电缆缓冲层烧蚀问题,探究缓冲层受潮产生白色粉末对电缆缓冲层径向电流集中烧蚀工况的影响及此工况下电缆缓冲层缺陷处电场畸变程度。利用多物理场仿真软件对电缆进行三维电热场仿真探究,分析白色粉末对电缆内部电热场分布的影响。结果表明,缓冲层进水受潮,水分子与缓冲层、铝护套等发生化学反应,导致电缆缓冲层烧蚀,同时加剧了径向电流集中烧蚀工况下电缆缓冲层缺陷处附近电场的畸变程度,极易引起局部放电,进而引发烧蚀。Aiming at the ablation of the buffer layer of high-voltage cross-linked polyethylene(XLPE)cables,the influence of white powder produced by the moisture in the buffer layer on the ablation condition of the radial current concentration of the buffer layer of the cables is explored,and the degree of distortion of the electric field at the defects of the buffer layer of the cables in this condition are investigated.Using mult-physical field simulation software,a three-dimensional electro-thermal field simulation of the cableis is conducted to analyze the impact of the white powder on the internal electro-thermal field distribution of the cable.The results show that buffer layer is affected by water ingress and moisture,and the chemical reaction between water molecules and buffer layer and aluminum sheath couses the ablation of buffer layer of the cableis.At the same time,it intensifies the degree of distortion of the electric field near the defects of the buffer layer of the cable under the condition of radial current concentration ablation,which easily leads to partial discharge and subsequently triggers ablation.

关 键 词：高压交联聚乙烯电缆 缓冲层烧蚀 径向电流集中 白色粉末 电热场仿真 

分 类 号：TM247[一般工业技术—材料科学与工程]