Open AccessStudy on Arc Extinguishing Performance of DC C4F7N/CO2 Mixed Gas
Author(s) -
Chengli Wang,
Li Jing,
Shuxin Liu,
Yundong Cao
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/692/3/032097
Subject(s) - arc (geometry) , quenching (fluorescence) , analytical chemistry (journal) , materials science , volume (thermodynamics) , chemistry , thermodynamics , physics , mathematics , geometry , optics , chromatography , fluorescence
The arc characteristic analysis of C 4 F 7 N/CO 2 , CO 2 and SF 6 gases with volume fraction of 10%C 4 F 7 N-90% under DC condition is studied. Firstly, based on the internal physical process of arc, a two-dimensional axisymmetric arc model of C 4 F 7 N/CO 2 , CO 2 and SF 6 gas was established and calculated. The arc temperature distribution and dynamic characteristics of three gas media are compared and analyzed the results show that the temperature distribution of C 4 F 7 N/CO 2 mixed gas is more similar to that of SF6 gas arc, and its radial cooling speed is faster, indicating that compared with CO 2 gas, C 4 F 7 N/CO 2 mixed gas has better arc-quenching characteristics, which can be used in the study of SF 6 substitute gas.