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Surface Charge Accumulation Behavior on GIL Spacer under DC Voltages in SF6/N2 Mixtures

  • Ke Feng Li
  • , Yan Qin Liu
  • , Xiao Feng Fan
  • , Xiang Yu Liu
  • , Jian Yi Xue
  • , Jun Bo Deng
  • , Guan Jun Zhang
  • State Grid Corporation of China
  • Xi'an Jiaotong University

科研成果: 书/报告/会议事项章节会议稿件同行评审

1 引用 (Scopus)

摘要

The accumulated charge on insulator surface is an important factor to trigger surface flashover. A surface charge experimental setup as well as measurement system under high gas pressure is built. An active electrostatic probe (Trek 3455ET, Model 341B) is used to measure surface potential distribution on a downsized cone-type spacer in SF6/N2 mixtures of different pressure under DC voltage. The actual charge density distribution is computed by the charge inverse algorithm, which considers the impact of the probe. The surface charge distribution shows similar shape at different pressure, including the homo-charges presenting a symmetrical distribution and a streak-like distribution. For the home-charges presenting a symmetrical distribution, they come from surface conductivity. For the streak-like distribution, they are located between central and grounded electrode. These charges come from the ionization of SF6 due to the local electrical field concentrated.

源语言英语
主期刊名ICHVE 2018 - 2018 IEEE International Conference on High Voltage Engineering and Application
出版商Institute of Electrical and Electronics Engineers Inc.
ISBN(电子版)9781538650868
DOI
出版状态已出版 - 2 7月 2018
活动2018 IEEE International Conference on High Voltage Engineering and Application, ICHVE 2018 - Athens, 希腊
期限: 10 9月 201813 9月 2018

出版系列

姓名ICHVE 2018 - 2018 IEEE International Conference on High Voltage Engineering and Application

会议

会议2018 IEEE International Conference on High Voltage Engineering and Application, ICHVE 2018
国家/地区希腊
Athens
时期10/09/1813/09/18

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