高压电器2017，Vol.53Issue(4)：1-4,12,5.DOI:10.13296/j.1001-1609.hva.2017.04.001
基于Boltzmann方程的高温CO2及其混合气体绝缘特性研究
Investigation on the Dielectric Properties of Hot CO2 and CO2-based Gas Mixtures Based on the Boltzmann Equation Analysis
摘要
Abstract
CO2 is a potential alternative for SF6 in the high voltage circuit breaker.In this paper,the critical reduced electric field strength (E/N)cr of CO2,CO2-O2,CO2-N2,CO2-CH4 and CO2-H2 at different mixing ratios,pressures and temperatures (300--4 000 K) have been calculated.The species composition of CO2 gas mixtures was calculated based on the Gibbs free energy minimizing to pick out the main species.Then the (E/N)cr of CO2 gas mixtures at different conditions were derived by solving the two term approximation of Boltzmann equation.The results indicate that the (E/N)cr of CO2-O2,CO2-H2 and CO2-CH4 are higher than that of other mixture gases.The fundamental data of the insulation properties of CO2 and its mixtures under high temperature are obtained,which provides a theoretical basis for the search of substitute gases for SF6.关键词
SF6替代气体/CO2/临界击穿场强/Boltzmann方程/电子能量分布函数Key words
SF6 substitution gas/CO2/reduced critical electric filed strength/Boltzmann equation/electron energy distribution function引用本文复制引用
张含天,孙昊,杨飞,吴翊,纽春萍,荣命哲,厉天威..基于Boltzmann方程的高温CO2及其混合气体绝缘特性研究[J].高压电器,2017,53(4):1-4,12,5.基金项目
国家重点基础研究发展计划项目(973计划)(2015CB251002) （973计划）
国家自然科学基金(51521065,51577145) （51521065,51577145）
中央高校基本科研业务费专项资金 （）
陕西省自然科学基金(2013JM-7010).Project Supported by the National Basic Research Program (973 Program)(2015CB251002),National Natural Science Foundation of China(51521065,51577145),the Fundamental Research Funds for the Central Universities,Shaanxi Province Natural Science Foundation (2013JM-7010). （2013JM-7010）
