Title :
Computation of coupled current-magnetic field for vacuum interrupter
Author :
Liu, X.M. ; Shao, X.J. ; Yuan, D.Y. ; Zou, J.Y. ; Cao, Y.D.
Author_Institution :
Sch. of Electr. Eng., Shenyang Univ. of Technol., Shenyang
Abstract :
A coupled model of current conduction and static magnetic field is proposed, according to three dimensional (3D) axial magnetic fields (AMF) of two and three segments coil-type contact for a 72.5 kV/31.5 kA vacuum interrupter (VI). And the distributions of current density and electric potential are obtained using finite element method (FEM). Moreover, the conductor resistance and the characteristics of AMF are also investigated. The results show that the conductor resistance, the arc voltage and AMF generated by two segments coil-type contact is relatively larger than that that of the three segments coil-type contact.
Keywords :
current density; electric resistance; electrical conductivity; vacuum arcs; vacuum interrupters; arc voltage; axial magnetic fields; conductor resistance; coupled current-magnetic field; current 31.5 kA; current conduction; current density; electric potential; finite element method; two segments coil-type contact; vacuum interrupter; voltage 72.5 kV; Conductors; Contact resistance; Couplings; Current density; Electric potential; Electric resistance; Finite element methods; Interrupters; Magnetic fields; Voltage;
Conference_Titel :
Discharges and Electrical Insulation in Vacuum, 2008. ISDEIV 2008. 23rd International Symposium on
Conference_Location :
Bucharest
Print_ISBN :
978-973-755-382-9
Electronic_ISBN :
1093-2941
DOI :
10.1109/DEIV.2008.4676827
