An improved finite difference method for calculating electric field in high voltage vacuum interrupter

Author

Li, Li ; Erzhi, Wang

Author_Institution

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

fYear

2002

fDate

2002

Firstpage

519

Lastpage

522

Abstract

The electric field distribution of vacuum interrupter has been calculated using multiple grid algorithm. The thorny problem encountered in finite difference method (FDM) has been well manipulated by transforming the original calculated region with complex boundary to a regular region with rectangular boundary employing the ellipsoid equation for mesh generation. The mathematic model on transformed region has been deduced and solved by the multiple gird method. Through converting from refined grid to coarse grid and modifying the error from coarse grid to refined grid, the smooth error which is existed during the iteration process has been eliminated. The calculation result testified that the precision and convergency is higher than that of original FDM.

Keywords

electric fields; finite difference methods; vacuum interrupters; electric field calculation; ellipsoid equation; finite difference method; high voltage vacuum interrupter; mesh generation; multiple grid algorithm; rectangular boundary; smooth error elimination; Difference equations; Differential equations; Ellipsoids; Finite difference methods; Interrupters; Laplace equations; Mesh generation; Nonlinear equations; Vacuum technology; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Discharges and Electrical Insulation in Vacuum, 2002. 20th International Symposium on

Print_ISBN

0-7803-7394-4

Type

conf

DOI

10.1109/ISDEIV.2002.1027423

Filename

1027423