Decomposition characteristics of C5F10O/air mixture as substitutes for SF6 to reduce global warming

作者：Li, Yi; Zhang, Xiaoxing^*; Xiao, Song; Chen, Qi; Wang, Dibo

来源：Journal of Fluorine Chemistry, 2018, 208: 65-72.

DOI：10.1016/j.jfluchem.2018.01.015

• C5F10O/air
• Molecular dynamics
• ReaxFF forcefield
• SF6 alternative gas

Sulfur hexafluoride (SF6) is widely used in the power industry but is a serious greenhouse gas. Many researchers committed to achieving sustainable development of the power industry are finding alternatives to SF6 gas. C5F10O performs well in terms of environmental protection, insulation, and safety and is a potential environment-friendly alternative gas. In this paper, the insulation and decomposition characteristics of C5F10O/air gas mixture were examined using gas-insulation performance test platform, and decomposition products were detected by gas chromatography-mass spectrometry. The formation mechanism and distribution of C5F10O decomposition products were analyzed through reactive molecular dynamics method and density functional theory. The influence of air on the decomposition of C5F10O was also evaluated. Results showed that the decomposition of C5F10O/air gas mixture mainly produces CF3 center dot, C3F2 center dot, C4F7O center dot, CO, CF2 center dot, CF center dot, F center dot and CF4. The breakdown voltage of C5F10O/air gas mixture decreased slightly after repeated breakdown tests, and CF4, C2F6, Us, C3F6, C4F10, CF20 were detected. These results can serve as a reference for the systematic comprehension of the decomposition characteristics of C5F10O/air gas mixture and for related engineering applications.

• 出版日期2018-4
• 单位南方电网科学研究院有限责任公司; 武汉大学