Streamer discharge propagation and branching characteristics in transformer oil under AC voltage: Partial discharge and light emission

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

6 Scopus citations

Abstract

This paper describes an experimental study of streamer inception and propagation characteristics from a protrusion in transformer oil under AC voltage. The information acquired by partial discharge detection, such as current pulse sequences, phase-resolved PD (PRPD) pattern and statistical parameters are obtained; moreover, optical properties of streamer in transformer oil are captured by fast-imaging technique. The experimental results show that the pulse sequences represent different mechanisms. The stopping length of streamer are highly dependent on the amplitude of applied voltage. Both PRPD patterns and the shapes of streamer indicate that the positive and negative streamers show a strong polarity effect under AC voltage. The space charges formed periodically at the alternative half cycle of high voltage are responsible for the phenomena in the experiments.

Original languageEnglish
Title of host publication2017 IEEE 19th International Conference on Dielectric Liquids, ICDL 2017
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1-4
Number of pages4
ISBN (Electronic)9781509048779
DOIs
StatePublished - 29 Nov 2017
Event19th IEEE International Conference on Dielectric Liquids, ICDL 2017 - Manchester, United Kingdom
Duration: 25 Jun 201729 Jun 2017

Publication series

Name2017 IEEE 19th International Conference on Dielectric Liquids, ICDL 2017
Volume2017-January

Conference

Conference19th IEEE International Conference on Dielectric Liquids, ICDL 2017
Country/TerritoryUnited Kingdom
CityManchester
Period25/06/1729/06/17

Keywords

  • Apparent morphology
  • Partial discharge
  • Streamer discharge
  • Transformer oil

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