Title :
Characteristics of discharge generation across insulation barrier in the oil/Pressboard composite insulation system
Author :
Yoshida, Sigeru ; Kozako, Masahiro ; Hikita, Masayuki ; Umemoto, Takahiro ; Kainaga, Soichiro ; Muto, Hirotaka ; Tsurimoto, Takao
Author_Institution :
Kyushu Inst. of Technol., Kitakyushu, Japan
Abstract :
This paper deals with the discharge characteristics in the oil/Pressboard composite insulation system under the application of a standard lightning impulse voltage. Discharge images were observed using a digital camera. We investigated the barrier effect on partial discharge inception voltage (PDIV) and breakdown voltage (BDV). Furthermore, we observed the discharge generation across the insulation barrier and also evaluated the voltage required for the phenomenon by the electric field analysis.
Keywords :
composite materials; electric fields; partial discharges; power transformer insulation; transformer oil; BDV; PDIV; breakdown voltage; digital camera; discharge generation characteristics; electric field analysis; insulation barrier; oil insulation system; partial discharge inception voltage; pressboard composite insulation system; standard lightning impulse voltage; Dielectrics; Discharges (electric); Electrodes; ISO standards; Noise; Partial discharges; Creepage discharge; Oil-immersed transformer; Pressboard;
Conference_Titel :
Electrical Insulating Materials (ISEIM), Proceedings of 2014 International Symposium on
Conference_Location :
Niigata
DOI :
10.1109/ISEIM.2014.6870759
