Print Email Facebook Twitter Physical interpretation of the floating electrode defect patterns under AC and DC stress conditions Title Physical interpretation of the floating electrode defect patterns under AC and DC stress conditions Author Abdul Madhar, S. (TU Delft DC systems, Energy conversion & Storage) Mraz, Petr (Haefely AG) Mor, A. R. (TU Delft DC systems, Energy conversion & Storage) Ross, Robert (TU Delft DC systems, Energy conversion & Storage) Date 2019-12-06 Abstract Partial discharge is a prevalent phenomenon under high voltage (HV) where the discharge partially bridges the gap between two electrodes. At increasing voltage levels, physical dimensions and distances between the electrical parts become critical. Designing electrical components for such high voltages and planning of high voltage laboratories/tests need to deliberate this aspect as it could lead to possible complications such as partial discharges (PD) from the floating metal components. Floating electrodes under AC voltages are associated with a distinctive PRPD pattern. However, there is a lack of literature on the physical interpretation of this pattern. Likewise, under DC voltages, no consistent explanation towards the defect behavior has been reported. Therefore, this paper presents an in-depth study of the floating electrode defect configuration under AC and DC voltages. Subsequently, it provides the physical interpretation of the discharge patterns obtained through the stepwise description of the discharge stages under both conditions. By formulating criteria for repetitive discharges and presenting novel PD fingerprints for DC floating electrode configuration, the outcomes published in this paper contribute towards prospective PD defect identification tools under HVDC. Subject Floating electrodeDefectCoronaPartial discharge (PD)PatternsHVDC To reference this document use: http://resolver.tudelft.nl/uuid:5c9066e4-f88e-4b7e-9e6f-1b13488e64cd DOI https://doi.org/10.1016/j.ijepes.2019.105733 ISSN 0142-0615 Source International Journal of Electrical Power & Energy Systems, 118, 1-8 Part of collection Institutional Repository Document type journal article Rights © 2019 S. Abdul Madhar, Petr Mraz, A. R. Mor, Robert Ross Files PDF 2019.105733.pdf 2.04 MB Close viewer /islandora/object/uuid:5c9066e4-f88e-4b7e-9e6f-1b13488e64cd/datastream/OBJ/view