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Effects of discharge area and surface conductivity on partial discharge behavior in voids under square voltages

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3 Author(s)
Kai Wu ; State Key Lab. of Electr. Insulation & Power Equip., Xi''an Jiaotong Univ. ; Okamoto, T. ; Suzuoki, Y.

The transitions of partial discharge (PD) behavior with aging in a void under ac voltages with sine wave and square wave were observed. The transition of the PD magnitude with aging under square wave showed the same tendency as that under sine wave. Moreover, the experimental results also showed some distinctive characteristics of PDs under square voltage (e.g. more than two pulses after the voltage rise time and their transition with aging). These phenomena were explained in terms of the effect of discharge area and the change in surface condition due to PD degradation

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Dielectrics and Electrical Insulation, IEEE Transactions on  (Volume:14 ,  Issue: 2 )