A new axial magnetic field contact for 126kV single break vacuum interrupters

Author

Zhang, Yingyao ; Liu, Zhiyuan ; Geng, Yingsan ; Jianjun Yao

Author_Institution

State Key Lab. of Electr. Insulation & Power Equip., Xi´´an Jiaotong Univ., Xi´´an

Volume

1

fYear

2008

fDate

15-19 Sept. 2008

Firstpage

280

Lastpage

283

Abstract

We proposed a new kind of coil type axial magnetic field (AMF) contact for 126 kV single break vacuum interrupters (VIs). The objective of this paper is to analyze and optimize AMF characteristics of the new contact. Compared with a former coil type AMF contact with 2 segments we developed, the new AMF contact is advantage with stronger AMF and lower electrode resistance. Its AMF characteristics were analyzed by finite element method (FEM) and we optimized AMF characteristics of the new contact by quadratic orthogonal regressive analysis. The optimization design results show that 1) the maximum axial magnetic flux density is 8.84 m T/kA on intermediate plane of contact gap 30 mm at current peak; 2) the maximum axial magnetic flux density is 1.18 m T/kA on intermediate plane of contact gap 30 mm at current zero; 3) the minimum electrode resistance is 7.8 muOmega.

Keywords

coils; electrical contacts; finite element analysis; regression analysis; vacuum interrupters; axial magnetic field contact; coil type; finite element method; maximum axial magnetic flux density; minimum electrode resistance; quadratic orthogonal regressive analysis; single break vacuum interrupters; voltage 126 kV; Coils; Contact resistance; Design optimization; Electrodes; Finite element methods; Interrupters; Magnetic analysis; Magnetic fields; Magnetic flux density; Optimization methods;

fLanguage

English

Publisher

ieee

Conference_Titel

Discharges and Electrical Insulation in Vacuum, 2008. ISDEIV 2008. 23rd International Symposium on

Conference_Location

Bucharest

ISSN

1093-2941

Print_ISBN

978-973-755-382-9

Electronic_ISBN

1093-2941

Type

conf

DOI

10.1109/DEIV.2008.4676774

Filename

4676774