"Database of different sources of controlled partial discharges"

"The dataset comprises 250 partial discharge signal acquisitions generated under controlled conditions at the High-Voltage Laboratory of UFCG (Campina Grande, PB, Brazil). Each acquisition consists of a 35 ms time window of simultaneously measured applied voltage and discharge current, captured using a high-frequency current transformer (HFCT) with an approximately linear response from 1 MHz to 80 MHz and sampled at 125 MSa\/s.To ensure exclusive capture of the intended discharges, a UV monitoring system (Ofil SN 213 camera) was employed during each test setup, allowing adjustments to electrode geometry and voltage level until discharge onset.Four test types were performed, each corresponding to a predominant discharge type:Corona: two needle-to-plane arrangements (grounded needle and grounded plane) with a 5 cm gap, yielding 100 acquisitions per configuration.Surface: simulated rain on a suspension insulator, yielding 50 acquisitions.Internal in solid: oil-filled cell with phenolic-plate inserts between plane\u2013plane electrodes, yielding 50 acquisitions.Internal in liquid: oil reservoir with needle electrodes separated by 3 mm, yielding 50 acquisitions."