Discharge mechanism in CO2: A study on possible occurrence of secondary discharges caused by field distortion during streamer or leader propagation

Since the introduction of SF6 in the 1950s, gas-insulated high voltage circuit breakers and Gas-insulated switchgear (GIS) have improved considerably, in particular concerning required drive energy for operation, compactness, and reliability. Nevertheless, high voltage insulation design has become increasingly challenging in recent years....