A dataset of corona inception and complete breakdown for sub-atmospheric air under alternating and direct current supply

This work presents an experimental dataset for the detection of corona and complete breakdown discharges in air under sinusoidal alternating current (AC) supply and direct current (DC) supplies at different values of the pressure-distance product. The dataset comprises 1764 experiments performed in a low-pressure chamber using two types of electrodes, namely a rod-plane and a sphere-plane. The experiments were conducted under 7 different pressure conditions (from the atmospheric pressure to 1% of the atmospheric pressure), with the electrodes placed at 14 different heights with respect to the flat ground plane (from 100 mm to 0.5 mm). All these tests were done under sinusoidal 50 Hz AC supply, positive DC (+DC) and negative DC supply (-DC). Each experiment consists of three repetitions under the same experimental conditions. The dataset includes the corona inception voltage or the complete breakdown voltage at each experimental condition. This dataset can be useful for modelling and validating accurate predictive discharge models under different pressures and for designing physics-informed insulation systems for more electric and all-electric aircraft.