Title :
A novel technique for partial discharge and breakdown investigation based on current pulse waveform analysis
Author :
Okubo, Hitoshi ; Hayakawa, Naoki
Author_Institution :
EcoTopia Sci. Inst., Nagoya Univ., Japan
Abstract :
A novel technique for partial discharge (PD) measurement and analysis (PD-CPWA; PD current pulse waveform analysis) is developed and introduced in this paper. PD-CPWA is expected to be utilized to discuss PD mechanisms and physics in electrical insulating materials, focusing on the PD current pulse waveform and its time transition from PD inception to breakdown (BD). In this paper, the concept and principle of PD-CPWA are described, and the applications of PD-CPWA to (1) epoxy spacer samples under thermal and electric combined stresses in GIS, (2) creepage PD on epoxy spacers in SF6 gas and (3) liquid nitrogen/polypropylene laminated paper composite insulation system for high temperature superconducting cables are introduced and discussed.
Keywords :
SF6 insulation; electric current measurement; gas insulated substations; paper; partial discharge measurement; polyethylene insulation; superconducting cables; thermal stresses; waveform analysis; GIS; PD; SF6; SF6 gas; breakdown; composite insulation system; creepage; current measurement; current pulse waveform analysis; dielectric materials; electric stress; electrical insulating material; epoxy spacer sample; high temperature superconducting cable; laminated paper; liquid nitrogen-polypropylene; partial discharge measurement; thermal stress; time transition; Current measurement; Dielectric liquids; Dielectrics and electrical insulation; Electric breakdown; Geographic Information Systems; Partial discharge measurement; Partial discharges; Physics; Pulse measurements; Thermal stresses;
Journal_Title :
Dielectrics and Electrical Insulation, IEEE Transactions on
DOI :
10.1109/TDEI.2005.1511099
