Paper Title
Optical and Electrical Characterization of Creeping Discharges Propagating at Solid/Nano-Fluid Interfaces

Abstract
This paper presents experimentally investigation of creeping discharges propagate over insulators made of various materials, immersed in transformer oil, in a pointe-plane electrode configuration with point perpendicular to insulator submitted to HV voltage waveform (AC). The investigated liquids are mineral oil, as well as nanofluids using these oils as a base. The considered nanoparticles are Al2O3 with size13nm. The creeping discharges are investigated through the light they emit using optical system of highly sensitive digital camera. We mainly analyze the influence of the voltage wave form, type of fluid (pure material and mineral oil-based Al2O3 nanofluid) and thickness of solid insulating samples on the stopping length of discharges, associated current and partial discharge. Keywords - Alternating current, High voltage, Partial discharge, Breakdown voltage, Nanofluid.