Partial Discharge Inception and Breakdown Studies on Model Sheet-Wound, Compressed SF sub 6 Gas-Impregnated, Polymer Film-Insulated Windings

摘要

An investigation was made of advanced concepts for gas-insulated power transformers and experimental studies have been made on model turn-to-turn insulation structures comprised of sheet aluminum conductors insulated with two sheets of polymer film impregnated with compressed SF sub 6 gas. Precautions were taken to eliminate particles using electrostatic techniques during winding of the models. Partial discharge inception and breakdown measurements were made at 60 Hz applied voltages and room temperature; the effect of polymer film thickness was also investigated. (ERA citation 05:018839)