Title :
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
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;
Conference_Titel :
Electrical Machines and Systems (ICEMS), 2010 International Conference on
Conference_Location :
Incheon
Print_ISBN :
978-1-4244-7720-3
