Understanding Partial Discharge Behavior from the Memory Effect Induced by Residual Charges: A Review

Residual charges produced in previous partial discharges (PDs) are considered as one aspect of memory effects that affect subsequent discharge behavior. In this paper, we review past studies about memory effects induced by residual charges during successive PDs. At first, surface charge dynamics for...

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Bibliographic Details
Published in:IEEE transactions on dielectrics and electrical insulation 2020-12, Vol.27 (6), p.1951-1965
Main Authors: Pan, Cheng, Wu, Kai, Chen, George, Gao, Yu, Florkowski, Marek, Lv, Zepeng, Tang, Ju
Format: Article
Language:English
Subjects:
Charge carrier processes
chopped PD
conditional distribution
Discharge
discharge area
Discharges (electric)
memory effect
partial discharge (PD)
Partial discharges
Pulse sequence analysis
residual charge
Sequences
Surface charge
Surface discharges
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Summary:Residual charges produced in previous partial discharges (PDs) are considered as one aspect of memory effects that affect subsequent discharge behavior. In this paper, we review past studies about memory effects induced by residual charges during successive PDs. At first, surface charge dynamics for cavity and needle-to-dielectric discharges are presented. Subsequently, three methods used to unravel the memory effects are described, e.g. conditional distribution, pulse sequence analysis (PSA) and chopped PD (CPD). Then effects of residual charges on PD inception, discharge propagation and collective behavior are summarized. In addition, contributions of residual charges to the transitions between discharge modes and discharge patterns are presented. At last, some problems relevant to the memory effects are discussed, followed by suggestions for future work.
ISSN:1070-9878
1558-4135
DOI:10.1109/TDEI.2020.008960