Simplified Hybrid PD Model in Voids
- Autori: Ala, G; Candela, R; Romano, P; Viola, F
- Anno di pubblicazione: 2011
- Tipologia: eedings
- OA Link: http://hdl.handle.net/10447/60463
In this paper a novel approach to model partial discharges (PD) activity taking place inside a spherical void in epoxy resin system has been traced. The approach is based on a time varying conductance of the inner void, subjected to multistress conditions: voltage, temperature and pressure. A simple lumped circuit macro-model simulates the global effects of PD activity: the different parameters influencing the discharge phenomenon in the void are taking into account by using a physical approach resulting in a time varying conductance inside the circuit. The evaluated PD activity has been compared with experimental and simulated one for the accessible and inaccessible part of the system. A discussion on the observed changes in PD activity has been reported.