Szczegóły publikacji
Opis bibliograficzny
Impact of high voltage harmonics on interpretation of partial discharge patterns / Marek Florkowski, Barbara FLORKOWSKA, Jakub FURGAŁ, Paweł ZYDROŃ // IEEE Transactions on Dielectrics and Electrical Insulation ; ISSN 1070-9878. — 2013 — vol. 20 no. 6 spec. iss.: Condition monitoring and diagnostics of electrical insulation, s. 2009–2016. — Bibliogr. s. 2016, Abstr.
Autorzy (4)
- Florkowski Marek
- AGHFlorkowska Barbara
- AGHFurgał Jakub Tadeusz
- AGHZydroń Paweł
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 79565 |
|---|---|
| Data dodania do BaDAP | 2014-02-05 |
| Tekst źródłowy | URL |
| Rok publikacji | 2013 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | IEEE Transactions on Dielectrics and Electrical Insulation |
Abstract
Typically, in laboratory and diagnostics tests focused on measuring partial discharges, a pure sinusoidal voltage waveform is assumed. However, in practice the spectral content of the applied voltage is rarely so ideal and additional spectral components have a significant impact on the discharge behavior in electrical insulation systems. In this paper the influence of voltage harmonics on partial discharge behavior and pattern evolution is analyzed. The presented experiments were conducted on a transformer installed in a municipal network and on specimens representing defects in a transformer insulation system, in the form of a micro blade protrusion on a winding conductor and an embedded gas inclusion. The experimental results showed that various harmonic compositions superimposed on the fundamental sinusoidal waveform have a significant impact on PD intensity and maximum charge. In consequence, PD pattern phase and amplitude distributions are distorted and calculated statistical parameters are changed. The rough parameters reflecting the waveform spectral quality, such as THD, are rather superficial and do not provide a unique and reliable signature of the applied voltage in terms of phase angle variations. In certain environments, neglecting harmonic content in the voltage may lead to a misleading interpretation and assessment of partial discharge severity. A complete knowledge of harmonic content is essential and critical in conducting a proper assessment of the impact of PD, including acceptability criteria and compatibility with the standards.