摘要
掌握气体相对绝缘强度的理论计算模型,可极大地加速SF6替代气体的研究。基于分子拓扑指数理论,提出了描述绝缘气体的分子拓扑指数特征,对47种绝缘气体分子共22种原子类型电性拓扑状态指数进行了计算,同时引入羰基和氰基基团的电性拓扑状态指数。利用逐步多元回归法构建气体绝缘强度的多元线性预测模型,并经筛选原则获得了对绝缘强度有显著影响的基团。结果表明:对气体绝缘强度有显著影响的基团有>CH-、=C=、-F、-C≡N、-Cl与>C=O,其中-F、-C≡N、-Cl与>C=O具有较高的电负性值,同时电性拓扑状态指数(ETSI)值高,对绝缘强度为正贡献,设计与筛选SF6替代气体时可优先考虑这些基团。
Mastering the theoretical calculation model of gas relative insulation strength can greatly accelerate the research of SF6substitute gas. On the basis of molecular topological index theory, a molecular topological index of insulating gas was proposed, and the electrical topological state indexes of 22 types of atomic for 47 insulating gas molecules were calculated. At the same time, the electrical topological state indexes of carbonyl and cyano groups were introduced. A multivariate linear prediction model of gas insulation strength was constructed by stepwise multiple regression method, and the groups which have significant indigenous influence on the insulation strength were obtained by screening principle. The results show that >CH-, =C=,-F,-C≡N,-Cl, and >C=O have significant effects on the gas insulation strength. Among them,-F,-C≡N,-Cl, and >C=O have higher electronegativity, and their electrical topological state index(ETSI) value is high and has a positive contribution to the insulation strength. These groups can be preferentially considered when designing and screening SF6 substitute gases.
作者
张绍立
赵秋琳
王璁
邱馨仪
曹人杰
郑重
屠幼萍
ZHANG Shaoli;ZHAO Qiulin;WANG Cong;QIU Xinyi;CAO Renjie;ZHENG Zhong;TU Youping(Beijing Key Laboratory of High Voltage&EMC,North China Electric Power University,Beijing 102206,China)
出处
《绝缘材料》
CAS
北大核心
2022年第9期68-73,共6页
Insulating Materials
基金
国家重点研发计划项目(2017YFB0902500)。
关键词
绝缘气体
绝缘强度
定量结构-性质关系模型
基团
insulating gas
insulation strength
quantitative structure-property relationship model
group
