Analysis of transient electrical field of barrier system of bushing outlet in converter transformer

Author

Qi, Yanli ; Zhang, Yanli

Author_Institution

Dept. of Electr. Eng., Shenyang Univ. of Technol., Shenyang, China

fYear

2010

fDate

10-13 Oct. 2010

Firstpage

1461

Lastpage

1464

Abstract

This paper presents the characteristics of electric field under direct current polarity reversal voltage in the barrier system of bushing outlet in converter transformer. In the calculation of the transient electric field, the permittivity ε and conductivity γ of the dielectrics in the insulation structure are taking into account and the space and time discretization for governing equation in the finite element analysis are presented. The effects which different γ and voltage reversal time intervals have on the electric field distribution are examined under polarity reversal voltage (PR), changing from one steady state to another.

Keywords

HVDC power convertors; electrical conductivity; finite element analysis; permittivity; power transformers; barrier system; bushing outlet; converter transformer; direct current polarity reversal voltage; finite element analysis; insulation structure; transient electrical field; voltage reversal time intervals; Converters; Electric fields; Insulators; Oil insulation; Petroleum; Power transformer insulation;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Machines and Systems (ICEMS), 2010 International Conference on

Conference_Location

Incheon

Print_ISBN

978-1-4244-7720-3

Type

conf

Filename

5664337