Measurements and calculations of surface charge on the cone-type insulator

Qiang Wang*, Guixin Zhang, Xinxin Wang

*Corresponding author for this work

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

Abstract

The solid insulators in gas insulated equipment are of great important to the electrical insulation reliability of such equipment. It was confirmed that surface charge accumulation on the insulator is the most important matter that can degrade the overall performance of these insulation systems. In order to study the phenomenon of surface charge accumulation on cone-type insulators, which are most commonly used in gas insulated systems, a set of device for surface charge measurement is designed based on the electrostatic probe technique. The Trek Model 347 voltmeter and a vibrating probe are utilized to obtain the surface voltages of the insulator. Moreover, an improved numerical computing method is introduced to calculate the surface charge. The measured results show that this technique can be used to measure the spatial distribution of surface charge on the cone-type insulator with satisfactory accuracy and resolution.

Original languageEnglish
Title of host publicationDRPT 2011 - 2011 4th International Conference on Electric Utility Deregulation and Restructuring and Power Technologies
Pages645-648
Number of pages4
DOIs
Publication statusPublished - 2011
Externally publishedYes
Event2011 4th International Conference on Electric Utility Deregulation and Restructuring and Power Technologies, DRPT 2011 - Weihai, Shandong, China
Duration: 6 Jul 20119 Jul 2011

Publication series

NameDRPT 2011 - 2011 4th International Conference on Electric Utility Deregulation and Restructuring and Power Technologies

Conference

Conference2011 4th International Conference on Electric Utility Deregulation and Restructuring and Power Technologies, DRPT 2011
Country/TerritoryChina
CityWeihai, Shandong
Period6/07/119/07/11

Keywords

  • Surface charge
  • calculation
  • cone-type insulator
  • electrostatic probe
  • measurement
  • spatial distribution

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