Effect of Ionization Processes on the Corona Stabilization Breakdown in SF sub 6 and SF sub 6 Mixtures

摘要

Breakdown strengths of mixtures of SF sub 6 with small percentages of hydrocarbon additives in rod-plane gaps for positive impulse and direct applied voltages are reported for pressures ranging from 50 to 700 kPa. The observed significant enhancement in the corona stabilization of some SF sub 6 /hydrocarbon mixtures is discussed in relation to increased ionization. The role of electron impact, Penning, and photon ionization processes is discussed. (ERA citation 08:057519)