Time Transition of Conductivity Distribution in Air by DC Partial Discharge for Air-solid Composite Insulation Systems

R. Nakane, H. Kojima, J. Suehiro, H. Okubo, N. Hayakawa

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Toward the development of HVDC power apparatus, we investigate the charging process on solid insulator in terms of the time transition of conductivity distribution in air for air-solid composite insulation system from DC-on to DC steady-state. By using needle-air-PMMA-plane electrode configuration, we measure the time evolution of surface potential on PMMA due to partial discharge at the needle tip under negative DC voltage. We compare the measured surface potential distribution with the simulation result considering the charge behavior in air. Especially, a novel simulation model considering the charge supply due to DC partial discharge is built. As a result, in air-solid composite insulation system under negative DC application, the time transition of conductivity distribution in air corresponding to the charge accumulation is evaluated quantitatively.

Original languageEnglish
Title of host publicationCEIDP 2020 - 2020 IEEE Conference on Electrical Insulation and Dielectric Phenomena
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages55-58
Number of pages4
ISBN (Electronic)9781728195728
DOIs
Publication statusPublished - Oct 18 2020
Event2020 IEEE Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2020 - Virtual, East Rutherford, United States
Duration: Oct 18 2020Oct 30 2020

Publication series

NameAnnual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP
Volume2020-October
ISSN (Print)0084-9162

Conference

Conference2020 IEEE Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2020
Country/TerritoryUnited States
CityVirtual, East Rutherford
Period10/18/2010/30/20

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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