Abstract Details
282 / 2024-09-14 11:12:10
The study on the cold-state breakdown characteristics of different environmentally friendly gases
Environmentally friendly mixed gas; Cold breakdown characteristics; Electron energy distribution function; Ionization and attachment coefficients
Draft Accepted
C4F7N is a potential alternative to SF6 gas. Researching the critical breakdown field strength of C4F7N and its mixed gases is of great significance for further studying their insulating properties. This paper establishes a mathematical model for the critical breakdown field strength of gases, employs a two-term approximation method to solve the Boltzmann equation, and calculates the electron energy distribution function (EEDF) for different proportions of C4F7N mixed gases and synthetic air under reduced electric fields ranging from 100Td to 1000Td at a temperature of 300K, The reduced ionization coefficient α/N and the reduced attachment coefficient β/N in the gas collision process were calculated, and the reduced breakdown field strengths for different proportions of C4F7N mixed gases and synthetic air were obtained. The study shows that when the proportion of C4F7N is fixed and E/N increases, the value of α/N increases while β/N decreases. The values of α/N and β/N are the highest for pure O2 and the lowest for pure N2, and they become saturated when E/N exceeds 300Td. The breakdown field strength of the C4F7N mixed gas linearly increases with the content and is affected by the O2 content, with 2%-10% O2 being able to maintain the breakdown field strength. The breakdown field strength of synthetic air increases with the increase in O2 content. The increase in H2O content causes the breakdown field strength of the C4F7N mixed gas to decrease to a maximum of 70.3%. At 900 μL/L and 1500 μL/L of trace moisture, the breakdown field strengths reach 72.3% and 71.0%, respectively. A trace moisture content of 300 μL/L reduces the breakdown field strength of air to 85.2%, and at 1200 μL/L of trace moisture, it drops to 68.3%, with the breakdown field strength being 214.6 Td.
Important Date
-
Conference Date
Nov 10
2024
toNov 13
2024
-
Nov 11 2024
Draft paper submission deadline
-
Nov 19 2024
Registration deadline
Sponsored By
Xi’an Jiaotong Universit
Contact Information
Previous Conferences
-
2022-11-24 Bangladesh Dhaka
2022 International Conference on Energy and Power Engineering -
2019-03-14 Bangladesh
2019 International Conference on Energy and Power Engineering
