Characterising Double Cavity Partial Discharges (original) (raw)

2021

Abstract

This paper presents an investigation into characteristics of double cavity partial discharges. High Density Polyethylene (HDPE) is used as the insulation in the test specimen. Firstly, an electric field simulation using FEMM was used to observe the influence of the gap distance between the two cavities. This was to observe the electric field magnitude in the cavities for the same applied voltage across the parallel plate electrodes. It was observed that the electric field within the cavities is inversely proportional to the gap size between the cavities. For identically sized 1 mm diameter cavities, the electric field magnitudes within cavities influenced each other for gap length less than 3.5 mm. Beyond 3.5 mm, the crossinterference of the electric fields in the two cavities became negligible. Based on the simulation results, a gap length of 1 mm was used in the physical experiments. The test samples were prepared by placing a defected HDPE disc between two healthy discs. The resu...

Richard Links hasn't uploaded this paper.

Let Richard know you want this paper to be uploaded.

Ask for this paper to be uploaded.