Electric field calculation and optimization of ultra-high voltage transformer equipotential shielding

Author

Lv, Dianli ; Wang, Youhua ; Han, Tingyan ; Zhang, Huijuan ; Pang, Lingling ; Yan, Weili

Author_Institution

Province-Minist. Joint Key Lab. of Electromagn. Field & Electr. Apparatus Reliability, Hebei Univ. of Technol., Tianjin, China

Volume

2

fYear

2010

fDate

13-14 Sept. 2010

Firstpage

316

Lastpage

319

Abstract

A 3-D substantial model is built for an ultra-high voltage transformer coil, the equipotential shielding and the bushing end. This model is properly simplified according to the symmetrical structure of the coil. The electric field intensity distribution around the transformer high-voltage coil and the equipotential shielding are calculated on the basis of the finite element method, especially the maximum electric field intensity is found. With the zero-order optimization method, the maximum electric field intensity is significantly decreased by 27%. The calculation and optimization results provide basis for designing the coil and equipotential shielding of an ultra-high voltage transformer.

Keywords

bushings; coils; electromagnetic shielding; finite element analysis; potential transformers; 3-D substantial model; bushing end; electric field intensity distribution; equipotential shielding; finite element method; optimization; transformer coil; ultra-high voltage transformer; Electric breakdown; Insulation; Power transformer insulation;

fLanguage

English

Publisher

ieee

Conference_Titel

Computational Intelligence and Natural Computing Proceedings (CINC), 2010 Second International Conference on

Conference_Location

Wuhan

Print_ISBN

978-1-4244-7705-0

Type

conf

DOI

10.1109/CINC.2010.5643724

Filename

5643724