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Isotopic Tracing Analysis on Influence Mechanism of Trace O2 on Over-thermal Decomposition of SF6
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Qing HE1, Wei WANG2, Wanting DENG1, Danhui HU1, Shiling ZHANG3, Fuping ZENG4
Insulating Materials | 2022, 55(10) : 80 - 85
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Insulating Materials | 2022, 55(10): 80-85
• Test and Analysis •
Isotopic Tracing Analysis on Influence Mechanism of Trace O2 on Over-thermal Decomposition of SF6
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Qing HE1, Wei WANG2, Wanting DENG1, Danhui HU1, Shiling ZHANG3, Fuping ZENG4
Affiliations
  • 1State Grid Hubei Electric Power Co., Ltd., Electric Power Research Institute, Wuhan 430077, China
  • 2State Grid Hubei Electric Power Co., Ltd., Wuhan 430077, China
  • 3Electric Power Research Institute of State Grid Chongqing Electric Power Company, Chongqing 401123, China
  • 4School of Electrical Engineering and Automation, Wuhan University, Wuhan 430072, China
Published: 2022-10-20 doi: 10.16790/j.cnki.1009-9239.im.2022.10.013
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According to isotope tracing technology, we used stable isotope tracer 18O2 to carry out SF6 partial over-thermal decomposition experiments to simulate the decomposition of SF6 under sustained high temperature. The influence mechanism of trace O2 on the overheating decomposition of SF6 was analyzed by obtaining the changes in the volume fractions of the main oxygen-containing products labeled by 18O. The results show that under overheating conditions, trace O2 preferentially reacts with SF3, SF2, and SF to generate SOF3, SOF2, and SOF, followed by generating a small amount of SO2F2. It is said that O2 is the main source of oxygen for the formation of SOF2. Besides, under overheating conditions, SF6 can be completely decomposed to generate elemental S, which reacts with trace O2 to generate SO2.

gas insulated equipment  /  SF6  /  over-thermal decomposition  /  trace O2  /  isotope tracing
Qing HE, Wei WANG, Wanting DENG, Danhui HU, Shiling ZHANG, Fuping ZENG. Isotopic Tracing Analysis on Influence Mechanism of Trace O2 on Over-thermal Decomposition of SF6[J]. Insulating Materials, 2022 , 55 (10) : 80 -85 . DOI: 10.16790/j.cnki.1009-9239.im.2022.10.013
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Article Info
doi: 10.16790/j.cnki.1009-9239.im.2022.10.013
  • Receive Date：2021-10-12
  • Online Date：2025-12-23
  • Published：2022-10-20
Article Data
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History
  • Received：2021-10-12
  • Revised：2021-11-23
Funding
Affiliations
    1State Grid Hubei Electric Power Co., Ltd., Electric Power Research Institute, Wuhan 430077, China
    2State Grid Hubei Electric Power Co., Ltd., Wuhan 430077, China
    3Electric Power Research Institute of State Grid Chongqing Electric Power Company, Chongqing 401123, China
    4School of Electrical Engineering and Automation, Wuhan University, Wuhan 430072, China
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https://castjournals.cast.org.cn/joweb/jycl/EN/10.16790/j.cnki.1009-9239.im.2022.10.013
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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