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Literature data regarding the behavior of partial discharge inception voltage (PDIV) under repetitive impulsive voltage waveforms is contradictory. Some authors have found that rise time can lower PDIV, others just the opposite. The picture complicates further when repetitive PDIV (RPDIV) is discussed. In many papers, antenna sensor working in the UHF range were used, but no standardized sensors (and...
The influence of applied voltage waveform on partial discharges in cavities embedded in cross-linked polyethylene is investigated in this paper. The voltage waveforms dealt with are (a) 50 Hz sinusoidal, (b) 0.1Hz sinusoidal, (c) oscillating voltage waveforms having different frequencies and decay time constant of 80 ms. The results show that, under sinusoidal waveforms, 0.1Hz generally provides the...
The dependence of partial discharge inception voltage (PDIV) and repetitive partial discharge inception voltage (RPDIV) on some voltage impulse parameters (impulse width, rise time and repetition frequency) is investigated in this paper focusing on crossed pair specimens made of polyimide-amide enameled wires. The results are explained in terms of partial discharge physics and provide basis to improve...
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