This study explores the effect of O 2 as the second-component buffer gas on the power frequency breakdown characteristics and decomposition products of C5-PFK/CO 2 gas mixture. It is found that the breakdown voltage of C5-PFK/CO 2 gas mixture containing 7.5% C5-PFK is about 1.4 times that of CO 2 gas and about 2/3 of SF 6 gas at the same pressure. Although the average breakdown voltage of C5-PFK/CO 2 /O 2 gas mixture is slightly lowered, the addition of O 2 reduces the standard deviation of the breakdown voltage, improving the insulation stability of the C5-PFK/CO 2 gas mixture. The decomposition by products of C5-PFK/CO 2 gas mixture include CO, CO 2 , CF 4 , COF 2 , C 2 F 4 , C 2 F 6 , C 3 F 6 , C 3 F 6 0, C 3 F 8/ , C 4 F 10 , CHF 3 , C3HF7 and other fluorocarbon compounds. C5-PFK/CO 2 /O 2 gas mixture with 4% O 2 produces much CF 4 , C 2 F 6 and less CO after breakdown. It is recommended to add 4 to 6% O 2 in C5-PFK/CO 2 gas mixture to improve the power frequency breakdown characteristics for engineering application.

中文翻译：

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氧气对C5-PFK / CO的工频击穿特性和分解特性的影响2个 混合气体

这项研究探讨了O的作用 2个 C5-PFK / CO的工频击穿特性及其分解产物作为第二组分缓冲气体 2个混合气体。发现C5-PFK / CO的击穿电压 2个 含7.5％C5-PFK的混合气体约为CO的1.4倍 2个 气体和约2/3 SF 6气体在相同压力下。虽然平均击穿电压为C5-PFK / CO 2个 / O 2个 混合气稍微降低，添加O 2个 降低击穿电压的标准偏差，提高C5-PFK / CO的绝缘稳定性 2个混合气体。C5-PFK / CO的副产物分解 2个 混合气体包括CO，CO 2个 ，CF 4 ，COF 2个 ， C 2个 F 4 ， C 2个 F 6 ， C 3 F 6 ， C 3 F 6 0，C 3 F 8 / ， C 4 F 10 ，瑞士法郎 3 ，C3HF7和其他碳氟化合物。C5-PFK / CO 2个 / O 2个 含4％O的混合气体 2个 产生大量CF 4 ， C 2个 F 6分解后的二氧化碳更少。建议添加4到6％的O 2个 在C5-PFK / CO中 2个 混合气改善工频击穿特性，为工程应用。