Title :
AC Pulse Dielectric Barrier Corona Discharge Over Oil Surfaces: Effect of Oil Temperature
Author :
Guoxin Xie ; Ye Yang ; Jianbin Luo ; Dan Guo ; Lina Si
Author_Institution :
State Key Lab. of Tribology, Tsinghua Univ., Beijing, China
Abstract :
The oil temperature effect on the interaction between plasma caused by high ac pulse barrier corona discharge and dielectric oil film is investigated. The results showed that funnels due to the impact of electric wind or the shock wave generated by streamer discharge occurred more easily under asymmetric negative ac pulse voltages at low oil temperatures but more difficult at high oil temperatures compared with those under asymmetric positive ac pulse voltages. The variation of the funnel diameter with voltage was more obvious under asymmetric positive ac pulse voltages. Oil boiling appeared in the funnel induced by discharge under asymmetric negative ac pulse voltages with high temperatures; thermal flow manifested by localized material transfer existed, and finally, a viscous layer formed in the funnel for oils with elevated temperatures under asymmetric positive ac pulse voltages.
Keywords :
corona; discharges (electric); AC pulse dielectric barrier corona discharge; asymmetric negative AC pulse voltages; asymmetric positive AC pulse voltages; dielectric oil film; electric wind impact; funnels; localized material transfer; oil boiling; oil surfaces; oil temperature effect; shock wave; streamer discharge; thermal flow; viscous layer; Corona; Dielectrics; Discharges (electric); Electrodes; Liquids; Plasma temperature; Surface discharges; Corona discharge; electric breakdown; insulation oils; shock wave;
Journal_Title :
Plasma Science, IEEE Transactions on
DOI :
10.1109/TPS.2012.2230341