Design for new type of main insulation of 35kV electric power transformer based on electric field analysis

Author

Liu, Yanju ; Cao, Yundong ; Li, Yanbin ; Gao, Youhua ; Liu, Xiaoming

Author_Institution

Shenyang Ligong Univ., Shenyang

fYear

2008

Firstpage

1

Lastpage

4

Abstract

The reason of main insulation structure breakdown based on liquid and solid discharge theory is analyzed. The new design schemes of main insulation structure for 35 kV electric power transformer are presented based on electric field analysis. FEM is introduced to calculate the electric filed of new type of main insulation structure. The electric field distribution, maximum and position of electric field intensity are shown. A way of placing angle ring above high voltage is used to improve the electric field distribution. The electric field distribution for new structure is more uniform than the old main insulation structure.

Keywords

finite element analysis; power transformer insulation; FEM; electric field analysis; electric field intensity; electric power transformer insulation; finite element analysis; insulation structure breakdown; liquid-solid discharge theory analysis; voltage 35 kV; Coils; Dielectrics and electrical insulation; Electric breakdown; Iron; Low voltage; Manufacturing; Oil insulation; Power transformer insulation; Power transformers; Transformer cores;

fLanguage

English

Publisher

ieee

Conference_Titel

Automation Congress, 2008. WAC 2008. World

Conference_Location

Hawaii, HI

Print_ISBN

978-1-889335-38-4

Electronic_ISBN

978-1-889335-37-7

Type

conf

Filename

4699091