高压电力设备用环氧树脂材料绝缘性能研究  

Study on Insulating Properties of Epoxy Resin Material for UHV Power Equipment

作　　者：张施令 宁鑫 彭宗仁[3] ZHANG Shiling;NING Xin;PENG Zongren(Electric Power Research Institute of State Grid Chongqing Electric Power Company,Chongqing 401123,China;Electric Power Research Institute of State Grid Sichuan Electric Power Company,Chengdu 610072,China;State Key Laboratory of Electrical Insulation and Power Equipment,Xi'an Jiaotong University,Xi'an 710049,China)

机构地区：[1]国网重庆市电力公司电力科学研究院,重庆401123 [2]国网四川省电力公司电力科学研究院,四川成都610072 [3]西安交通大学电力设备电气绝缘国家重点实验室,陕西西安710049

出　　处：《绝缘材料》2021年第1期60-65,共6页Insulating Materials

摘　　要：通过Havriliak-Negami(HN)方程对特高压电力设备用环氧树脂材料介电频谱实验数据进行曲线拟合,建立环氧树脂材料HN数学模型参数。在频率为10-1~106 Hz和温度为-40~200℃内,使用宽带介电谱仪测量环氧树脂的频谱和温谱,并利用基于改进HN方程的非线性数值计算,对实测数据进行曲线拟合,获取介电频谱数学模型特征参数值。结果表明:应用遗传算法结合最小二乘法的曲线拟合方法可保证拟合参数值的唯一性和准确性;介电频谱特征参数包括直流电导率和松弛极化时间均具有显著的温度依赖性,基本符合Arrhenius公式。The dielectric spectrum experimental data of epoxy resin material for ultra high voltage(UHV)power equipment was fitted by Havriliak Negami(HN)equation,and the HN mathematical model parameters of epoxy resin material were established.In the frequency range of 10-1-106 Hz and temperature range of-40-200℃,the frequency spectra and temperature spectra of epoxy resin were measured using broadband dielectric spectrometer.Then the experimental data was fitted by the improved HN equation,and the characteristic parameters of dielectric spectrum mathematical model were obtained.The results show that the uniqueness and accuracy of the fitting parameters can be guaranteed combining with genetic algorithm and least square method.The characteristic parameters of dielectric spectra,including direct current conductivity and relaxation polarization time,have significant temperature dependence,which basically accords with Arrhenius formula.

关 键 词：特高压 环氧树脂 介电频谱 Havriliak-Negami(HN)方程 曲线拟合 

分 类 号：TM215[一般工业技术—材料科学与工程]