Electric field distribution on the outer surface of lower porcelain of an OIP transformer bushing-accumulation of metal-contained colloid

Azam Nekahi, Brian Stewart, Scott McMeekin

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

Abstract

The Finite Element Method (FEM) is commonly used for electric field simulation. This paper presents, for the first time, the calculation of the electric field intensity on one phase of a 245-kV OIP condenser bushing by FEM considering the effect of metallic-contained colloids deposition on the outer surface of lower porcelain. The distribution of the electric field on the surface of the bushing is calculated and the location of maximum electric field intensity of the bushing is determined. The spots having the maximum electric field intensity are the vulnerable areas from which the partial discharge may initiate. The extension of stained area due to the trapping effect of electric field is been considered.
Original languageEnglish
Title of host publicationProceedings of the 11th IEEE International Conference on the Properties and Applications of Dielectric Materials (ICPADM '15)
PublisherIEEE
Pages632 - 635
Number of pages4
DOIs
Publication statusPublished - 2015

Keywords

  • finite element method
  • electric field
  • simulation
  • bushings

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    Nekahi, A., Stewart, B., & McMeekin, S. (2015). Electric field distribution on the outer surface of lower porcelain of an OIP transformer bushing-accumulation of metal-contained colloid. In Proceedings of the 11th IEEE International Conference on the Properties and Applications of Dielectric Materials (ICPADM '15) (pp. 632 - 635). IEEE. https://doi.org/10.1109/ICPADM.2015.7295351