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高压直流电缆终端硅橡胶基非线性复合材料

Silicone Rubber Nonlinear Composites for HVDC Cable Terminals
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摘要 增强绝缘材料与电缆主绝缘材料之间的电导率差异会影响高压直流电缆终端的电场分布。通过向硅橡胶中添加纳米碳化硅、纳米二氧化硅、纳米炭黑、纳米石墨等填料,制备具有电导率非线性特性的硅橡胶基复合材料,研究纳米填料的掺杂种类、掺杂含量对硅橡胶复合材料直流电导特性、直流击穿特性、介电频谱特性的影响,在考虑温度影响下,利用COMSOL Multiphysics仿真软件进行电场仿真,分析增强绝缘非线性电导特性对高压直流电缆终端电场分布的影响。结果表明:以石墨/炭黑掺杂量为5/3的硅橡胶复合材料作为高压直流电缆终端增强绝缘,可以有效改善高压直流电缆终端电场分布。 The difference in conductivity between the reinforced insulation material and the cable main insulation material affects the electric field distribution in high-voltage direct current(HVDC)cable terminal.So,silicone rubber composites with conductivity nonlinearity were prepared by adding nano silicon carbide,nano-silica,nano-carbon black and nano-graphite to the silicone rubber.The effects of the types and contents of nanofiller on the DC conductance characteristics,DC breakdown characteristics and dielectric spectroscopy properties of the silicone rubber nonlinear composites were investigated experimentally.Under the influence of temperature,the electric field simulation was carried out by using COMSOL Multiphysics simulation software to analyze the influence of the nonlinear conductance characteristics of the reinforced insulation on the electric field distribution of the high-voltage direct current(HVDC)cable terminals.The results show that,when the silicon rubber composite material doped with graphite/carbon black(5/3)is used as the reinforced insulation of HVDC cable terminals,the electric field distribution of the HVDC cable terminals can effectively be improved.
作者 孙略 张沛红 李中原 张瑞敏 傅明利 侯帅 SUN Lüe;ZHANG Peihong;LI Zhongyuan;ZHANG Ruimin;FU Mingli;HOU Shuai(Key Laboratory of Engineering Dielectrics and Its Application,Ministry of Education of China,Harbin University of Science and Technology,Harbin 150080,China;Electric Power Research Institute,China Southern Power Grid,Guangzhou 510080,China)
出处 《高电压技术》 EI CAS CSCD 北大核心 2019年第5期1654-1665,共12页 High Voltage Engineering
基金 中国南方电网责任有限公司科技项目(KY2014-502).
关键词 硅橡胶 纳米碳化硅 纳米二氧化硅 纳米石墨 纳米炭黑 复合物 非线性电导特性 高压直流电缆终端 电场仿真 silicone rubber nano-SiC nano-SiO2 nano-graphite nano-carbon black composites nonlinear conductivity HVDC cable terminal electric field simulation
作者简介 孙略1988—,男,硕士从事直流电缆及直流电附件绝缘技术研究工作E-mail:474604677@qq.com;通讯作者:张沛红1962—,女,博士,教授主要从事纳米复合电介质介电性能及电力变压器绝缘方面的研究工作E-mail:zph@hrbust.edu.cn
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