PD characteristics and mechanisms in artificial air-filled voids at room and liquid nitrogen temperatures

S. Tsuru, M. Nakamura, T. Mine, K. Sakai, J. Suehiro, M. Hara

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

In this study, partial discharge (PD) characteristics in artificial air-filled voids at room and liquid nitrogen temperatures were investigated experimentally. It was found that minimum PD inception voltage at liquid nitrogen temperature (77 K) decreased with decrease in ambient temperature due to condensation of oxygen in the void. By observation of PD current pulses and light images, it was found that there were three modes of discharge: streamer, Townsend and glow-like discharges in PD at room and liquid nitrogen temperatures. Especially the mode at liquid nitrogen temperature changes markedly with the stress time.

Original languageEnglish
Pages (from-to)43-50
Number of pages8
JournalIEEE Transactions on Dielectrics and Electrical Insulation
Volume6
Issue number1
DOIs
Publication statusPublished - 1999

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

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