Szczegóły publikacji
Opis bibliograficzny
Correspondence between charge accumulated in voids by partial discharges and mapping of surface charge with PEA detection / Marek FLORKOWSKI, Maciej KUNIEWSKI // IEEE Transactions on Dielectrics and Electrical Insulation ; ISSN 1070-9878. — 2022 — vol. 29 iss. 6, s. 2199–2208. — Bibliogr. s. 2208, Abstr. — Publikacja dostępna online od: 2022-09-01
Autorzy (2)
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 144370 |
|---|---|
| Data dodania do BaDAP | 2023-01-09 |
| Tekst źródłowy | URL |
| DOI | 10.1109/TDEI.2022.3203370 |
| Rok publikacji | 2022 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | IEEE Transactions on Dielectrics and Electrical Insulation |
Abstract
Partial discharge (PD) dynamics in gaseous inclusions are related to the memory effects that originate from surface charge accumulation. In this article, the correspondence between a deposited charge that is inside a void during partial discharge activity with the surface potential mapping and space charge quantity that are obtained through the pulsed electro-acoustic (PEA) method was investigated. The experiments were performed in the configuration of an asymmetric void that is embedded in polyethylene material. Since the air gap in a void blocks acoustic wave propagation, the measurements were focused on one dielectric void wall (opposite to the metallic electrode). It was discovered that the polarity of the last period in a PD sequence influences the polarity of a deposited charge. Two types of readout pulsers were investigated and compared in the PEA method. In the surface charge decay process, a faster rate for negative charges was noticed as compared to positive ones. The experimental results showed a good quantitative correspondence between a real charge that was deposited by a PD during the phase-controlled sequence with an accumulated charge value that was obtained from surface mapping as well as charge detection – both being performed by means of the PEA method on the same layer of a void wall. The presented experimental results and analysis help extend the insight into PD mechanisms and quantitative surface charge accumulations.