ZHU Juan, SHEN Mengtian, YU Houxia, et al. Study on Power-frequency Breakdown Characteristics of SF6/N2 Mixed Gas[J]. 2019, 39(6): 20-22+28.DOI:
SF6/N2混合气体的工频击穿特性研究
摘要
通过理论分析对SF
6
/N
2
混合气体的工频击穿特性进行了研究
得出SF
6
/N
2
混合气体中SF
6
气体的最优比例是20%~30%
同时在其他条件不变的情况下将混合气体压力提高至1.4倍即可具备与纯SF
6
气体相同的工频击穿电压。试验结果也验证了分析结论的正确性
表明SF
6
/N
2
混合气体代替纯SF
6
气体作为绝缘介质是完全可行的。
Abstract
This paper studies the power-frequency breakdown characteristics of SF
6
/N
2
mixed gas by theoretical analysis. It is concluded that the optimal ratio of SF
6
gas in SF
6
/N
2
mixed gas is 20%~30%. At the same time
the same gas-frequency breakdown voltage as that of the pure SF
6
gas can be obtained by increasing the mixed gas pressure to 1.4 times under the same conditions. The test results also verify the correctness of the analytical conclusions
indicating that it is completely feasible to replace the pure SF