Review of Partial Discharge Activity Considering Very-Low Frequency and Damped Applied Voltage

Mohamad Ghaffarian Niasar, Xiaolei Wang and Respicius Clemence Kiiza
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Mohamad Ghaffarian Niasar: Department of Electrical Sustainable Energy, Delft University of Technology, 2628 CD Delft, The Netherlands
Xiaolei Wang: Digital Grid Research Institute, China Southern Power Grid, Guangzhou 510663, China
Respicius Clemence Kiiza: Dar es Salaam Institute of Technology, Dar es Salaam P.O. Box 2958, Tanzania

Energies, 2021, vol. 14, issue 2, 1-20

Abstract: When detecting the presence of partial discharge (PD) activity in the insulation system in high-voltage equipment, the excitation voltages at variable frequency have been widely used instead of power-frequency (50/60 Hz) sinusoidal voltage in order to reduce the charging power. This work reviews the relevant research on PD activity at very low frequency (VLF) method, including sinusoidal or cosine-rectangular voltage shape, and damped AC (DAC) method. Based on the research history and development status, some major PD characteristics, such as PD inception voltage (PDIV), PD amplitude, PD charge, PD phase-resolved pattern, and several hot issues, such as surface charge decay and statistical time lag, have been discussed. Moreover, the advantages, disadvantages, and applied conditions of two reviewed methods has been summarized. Finally, the prospects have been made on the main development trends of this research field in the future.

Keywords: partial discharge; very low frequency method; damped AC method (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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