High voltage high-current commutator based on series-connected triggered vacuum switches

Author

Sidorov, V.A. ; Alferov, D.F.

Author_Institution

All-Russian Electrotechnical Inst., Moscow, Russia

fYear

2002

fDate

2002

Firstpage

202

Lastpage

205

Abstract

The 80 kV, 250 kA commutator consisting of two series-connected triggered vacuum switches (of type TVS-43) has been manufactured and tested. The measurements have shown that the voltage distribution on series connected switches was nonuniform. Breakdown voltages of each TVS and the commutator breakdown voltage as a whole were measured. The experimental distribution function of breakdown voltage of the commutator was constructed on the basis of measurement results. The tests results have allowed to check the used method for breakdown probability account of the commutator, in which the experimental distribution function of breakdown voltage of each TVS is used. The comparison of a calculated distribution function of commutator breakdown voltage with the experimental distribution function showed good agreement. The proposed method allowed estimation of the dielectric strength of the commutator depending on the degree of nonuniformity of voltage distribution between series connected TVSs.

Keywords

commutators; electric strength; electric variables measurement; pulsed power switches; vacuum breakdown; vacuum switches; 250 kA; 80 kV; TVS43; breakdown voltage measurement; dielectric strength estimation; high voltage high-current commutator; nonuniform voltage distribution; series connected switches; series-connected triggered vacuum switches; Breakdown voltage; Dielectric breakdown; Dielectric measurements; Distribution functions; Manufacturing; Power system reliability; Protection; Switches; Switching circuits; Testing;

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.2002.1027342

Filename

1027342