The Space Charge Effect on the Corona Discharge of SF6 Gas

초록

In this paper, the characteristics of corona discharge in SF6 gas used as insulating medium in lots of high voltage equipments, are simulated by flunite element method with Flux-Corrected Transpor(FCT) method. The negative corona discharge characteristics in needle to plane electrode are analyzed at different dme step. The calculated results show that the electric field intensity between anode and ion group descreses according to electric field distortion by space charge as time goes by.