Improvement of main insulation structure for 110kV electric power transformer based on electric field analysis

Author

Youhua, Gao ; Dan, Gao ; Yanbin, Li ; Shuqiu, Gong ; Guogang, Wang

Author_Institution

Sch. of Electr. Eng., Shenyang Univ. of Technol., Shenyang

fYear

2008

fDate

17-20 Oct. 2008

Firstpage

4427

Lastpage

4430

Abstract

Main insulation structure for 110 kV electric power transformer is improved based on electric field Analysis. FEM is introduced to calculate the electric filed of primary and improved main insulation structure. The electric field distribution is shown, and maximum electric field intensity and its position are given. The advantage for improved main insulation structure is obtained from the cost comparison between primary and improved main insulation structure of transformer. The validity of main insulation structure has been proved by insulation test to electric power transformer.

Keywords

finite element analysis; insulation testing; power transformer insulation; FEM; electric field distribution; electric field intensity; electric power transformer; insulation test; voltage 110 kV; Boundary conditions; Coils; Costs; Dielectrics and electrical insulation; Insulation testing; Manufacturing; Oil insulation; Permittivity; Power transformer insulation; Power transformers;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Machines and Systems, 2008. ICEMS 2008. International Conference on

Conference_Location

Wuhan

Print_ISBN

978-1-4244-3826-6

Electronic_ISBN

978-7-5062-9221-4

Type

conf

Filename

4771576