Title :
Simplified hybrid PD model in voids
Author :
Ala, G. ; Candela, R. ; Romano, P. ; Viola, F.
Author_Institution :
Dipt. di Ing. Elettr., Elettron. e delle Telecomun., Univ. degli Studi di Palermo, Palermo, Italy
Abstract :
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.
Keywords :
lumped parameter networks; partial discharges; polymers; voids (solid); epoxy resin system; global effects; simple lumped circuit macro-model; simplified hybrid PD model; spherical void; Capacitance; Dielectrics; Discharges; Electric fields; Insulation; Integrated circuit modeling; Partial discharges; PD model; Partial discharge (PD); Weibull function; electrical insulation; probability function; void;
Conference_Titel :
Diagnostics for Electric Machines, Power Electronics & Drives (SDEMPED), 2011 IEEE International Symposium on
Conference_Location :
Bologna
Print_ISBN :
978-1-4244-9301-2
Electronic_ISBN :
978-1-4244-9302-9
DOI :
10.1109/DEMPED.2011.6063662
