TY - GEN
T1 - Influence of H2O on the decomposition products and discharge mechanism of ac point-plane corona discharge
AU - Gao, Qingqing
AU - Wang, Xiaohua
AU - Rong, Mingzhe
AU - Yang, Aijun
AU - Jiao, Lulu
N1 - Publisher Copyright:
© 2018 IEEE.
PY - 2018/11
Y1 - 2018/11
N2 - SF6 has been widely used as an insulating gas, which can decompose into several gaseous byproducts in electric discharges, like arc, spark or corona (partial) discharge, in the presence of the impurities H2O and O2. Researching on the decomposition products is helpful for improving the personal safety and long-time reliability of SF6 insulated equipment. The decomposition characteristics of SF6 under corona discharge is not only related to the insulation fault type but also has close relationship with the concentration of H2O in the insulated equipment. The effects of H2O on the decomposition products and possible main reactions have been analyzed a lot, however, the influence mechanism remains unaddressed. This work is devoted to obtaining the effects of the concentration of H2O on the decomposition products and the main reaction pathways. In this paper, the chemical kinetic model is established for 50Hz ac point-plane corona discharge. The multi-step time is used to obtain the rapid discharge process in the plasma region and the slow reaction process in the gas region simultaneously. The concentrations of SOF2, SO2F2 and SO2 and the main pathways of these three species under different moisture content at 12h are obtained. The moisture content varies from 200ppm to 5000ppm with the oxygen content keeping at 100ppm.
AB - SF6 has been widely used as an insulating gas, which can decompose into several gaseous byproducts in electric discharges, like arc, spark or corona (partial) discharge, in the presence of the impurities H2O and O2. Researching on the decomposition products is helpful for improving the personal safety and long-time reliability of SF6 insulated equipment. The decomposition characteristics of SF6 under corona discharge is not only related to the insulation fault type but also has close relationship with the concentration of H2O in the insulated equipment. The effects of H2O on the decomposition products and possible main reactions have been analyzed a lot, however, the influence mechanism remains unaddressed. This work is devoted to obtaining the effects of the concentration of H2O on the decomposition products and the main reaction pathways. In this paper, the chemical kinetic model is established for 50Hz ac point-plane corona discharge. The multi-step time is used to obtain the rapid discharge process in the plasma region and the slow reaction process in the gas region simultaneously. The concentrations of SOF2, SO2F2 and SO2 and the main pathways of these three species under different moisture content at 12h are obtained. The moisture content varies from 200ppm to 5000ppm with the oxygen content keeping at 100ppm.
KW - Ac corona discharge
KW - chemical kinetic model
KW - decomposition products
KW - discharge mechanism
KW - effects of moisture contents
UR - https://www.scopus.com/pages/publications/85070321932
U2 - 10.1109/CIEEC.2018.8745787
DO - 10.1109/CIEEC.2018.8745787
M3 - 会议稿件
AN - SCOPUS:85070321932
T3 - Proceedings of 2018 IEEE 2nd International Electrical and Energy Conference, CIEEC 2018
SP - 371
EP - 376
BT - Proceedings of 2018 IEEE 2nd International Electrical and Energy Conference, CIEEC 2018
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2nd IEEE International Electrical and Energy Conference, CIEEC 2018
Y2 - 4 November 2018 through 6 November 2018
ER -