The breakdown voltages for compressed gas-insulated systems with contamination considering the space charge effect

The breakdown voltage (BDV) characteristics of compressed gas-insulated systems has been obtained in sulphur-hexafluoride, SF₆, and air for wire conducting particles fixed to the center of one electrode. The main object of this paper is to hold comparison between the performances of compressed SF₆ and air with particle contamination. The results of this comparison may make it possible to perform future experiments using air rather than the more expensive and less accessible SF₆. The performance of particle dimensions on the breakdown voltage for compressed gas systems with and without space charge effects are carried out. The breakdown voltage-pressure characteristics for a parallel plane gap contaminated by a fixed particle for SF₆ and air while accounting for positive ions space charge effect are presented in this paper. A comparison between breakdown voltages for SF₆ and air gaps with and without space charge effects are also studied in this work