Space charge distribution measurement methods and particle loaded insulating materials

S. Holé (1) , A. Sylvestre (2) , Olivier Gallot-Lavallée (2) , C. Guillermin (3) , P. Rain (2) , S. Rowe (3)

1 LISIF - Laboratoire des Instruments et Systèmes d'Ile de France
2 G2ELab - Laboratoire de Génie Electrique de Grenoble
3 Schneider Electric Industries S.A.S.

In this paper the authors discuss the effects of particles (fillers) mixed in a composite polymer on the space charge measurement techniques. The origin of particle-induced spurious signals is determined and silica filled epoxy resin is analysed by using the laser-induced-pressure-pulse (LIPP), the pulsed-electroacoustic (PEA) and the laser-induced-thermal-pulse (LITP) methods. A spurious signal identified as the consequence of a piezoelectric effect of some silica particles is visible for all the methods. Moreover, space charges are clearly detected at the epoxy/silica interface after a 10-kV/mm poling at room temperature for 2 hours.

Mots clés: PEA; Space charge

Domaines: Autre; Instrumentations et Détecteurs [physics.ins-det]

S. Holé, A. Sylvestre, Olivier Gallot-Lavallée, C. Guillermin, P. Rain, et al.. Space charge distribution measurement methods and particle loaded insulating materials. 2006. ⟨hal-00019778⟩