摘要
为了研究SF_(6)与不同缓冲气体组成的协同效应,并揭示SF_(6)混合气体的协同效应机理,首先针对SF_(6)气体分别与N_(2)、Air(空气)、CO^(2)、CF_(4)和He组成的混合气体,测试了上述混合气体在SF_(6)摩尔分数0~100%范围下的工频击穿电压,利用Takuma计算公式拟合获得其协同效应系数,发现上述缓冲气体与SF_(6)协同效应的强弱排序为N_(2)>Air>CO_(2)>CF_(4)>He。然后对比了Takuma计算公式与幂函数经验公式的拟合效果,明确了两种方法的适用性。最后通过气体吸附截面分布和缓冲气体电子能量分布分析了不同缓冲气体与SF_(6)协同效应的强弱原因,分析结果与试验结果排序一致,证明了分析方法的合理性,为其他类型混合气体的协同效应研究提供参考。
In this paper,it studies the synergistic effect of SF_(6) mixed gas composed of SF_(6) and different buffer gases,and reveals the mechanism of synergistic effect of SF_(6) mixed gas.Firstly,the power frequency breakdown voltages of SF_(6) gas mixtures with N_(6),air,CO_(2),CF_(4) and He were tested in the mole fraction range of 0~100%SF_(6).The synergistic effect coefficient was obtained by fitting with Takuma formula.The order of synergistic effect of five buffer gases and SF_(6) is:N_(2)>air>CO_(2)>CF_(4)>He.Then,the fitting results using Takuma formula and power function formula were compared,and the applicability of the two methods was clarified.Finally,the synergistic effect between different buffer gases and SF_(6) was analyzed by the gas adsorption cross-section distribution and the electron energy distribution of buffer gas and the analysis results were consistent with the experimental results,which proves that the analysis was reasonable.This study can provide a reference for the study of synergistic effects of other types of mixed gases.
作者
沈腾达
郑宇
周文俊
邱睿
SHEN Teng-da;ZHENG Yu;ZHOU Wen-jun;QIU Rui(School of Electrical Engineering and Automation,Wuhan University,Wuhan 430072,China)
出处
《电机与控制学报》
EI
CSCD
北大核心
2022年第10期41-48,共8页
Electric Machines and Control
基金
国家自然科学基金(U1966211)
博士后创新人才支持计划资助项目(BX20200252)。
关键词
协同效应
混合气体
SF_(6)替代气体
工频击穿试验
吸附截面
电子能量分布
synergistic effect
mixed gas
alternative gas of pure SF 6
power frequency AC breakdown test
adsorption cross-section
electron energy distribution
