TY - GEN
T1 - Investigation on the Surface Flashover Characteristics of Epoxy Composites in C4F7N/CO2Mixture
AU - Li, Jinshu
AU - Chen, Junhong
AU - Dong, Junhao
AU - Sun, Peng
AU - Deng, Junbo
AU - Zhang, Guan Jun
N1 - Publisher Copyright:
© 2022 IEEE.
PY - 2022
Y1 - 2022
N2 - Although SF6 is widely used in electrical apparatus, it has a strong greenhouse effect, so it is necessary to find alternative gases. C4F7N/CO2 mixture, as a potential substitute, has been widely concerned by researchers. The long-term working insulation performance of C4F7N, especially the surface insulation, still needs more research. In this paper, two types of spacers are used to study the surface flashover characteristics in C4F7N/CO2 mixture. It is found that the flashover voltage of the plate spacer in 10% C4F7N /90%CO2 mixture is lower than SF6. When the C4F7N content increases from 5% to 20%, the surface flashover voltage of the downsized GIL basin spacer increases and C4F7N/CO2 mixture has obvious synergistic and polar effect. If the voltage is applied for ten minutes in advance, the homo-charges increase the surface flashover voltage, while the hetero-charges reduce the surface flashover voltage to a certain extent.
AB - Although SF6 is widely used in electrical apparatus, it has a strong greenhouse effect, so it is necessary to find alternative gases. C4F7N/CO2 mixture, as a potential substitute, has been widely concerned by researchers. The long-term working insulation performance of C4F7N, especially the surface insulation, still needs more research. In this paper, two types of spacers are used to study the surface flashover characteristics in C4F7N/CO2 mixture. It is found that the flashover voltage of the plate spacer in 10% C4F7N /90%CO2 mixture is lower than SF6. When the C4F7N content increases from 5% to 20%, the surface flashover voltage of the downsized GIL basin spacer increases and C4F7N/CO2 mixture has obvious synergistic and polar effect. If the voltage is applied for ten minutes in advance, the homo-charges increase the surface flashover voltage, while the hetero-charges reduce the surface flashover voltage to a certain extent.
KW - CFN /CO
KW - GIL downsized spacer
KW - flashover characteristics
KW - plate spacer
KW - surface charge accumulation
UR - https://www.scopus.com/pages/publications/85129583909
U2 - 10.1109/AEEES54426.2022.9759730
DO - 10.1109/AEEES54426.2022.9759730
M3 - 会议稿件
AN - SCOPUS:85129583909
T3 - 2022 4th Asia Energy and Electrical Engineering Symposium, AEEES 2022
SP - 6
EP - 10
BT - 2022 4th Asia Energy and Electrical Engineering Symposium, AEEES 2022
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 4th Asia Energy and Electrical Engineering Symposium, AEEES 2022
Y2 - 25 March 2022 through 28 March 2022
ER -
