Calculation and Analysis of Transient Electric Field of 10kV Outdoor Vacuum Circuit Breaker under Lightning Impulse

Author

Youhua, Gao ; Erzhi, Wang ; Yanbin, Li ; Yundong, Cao ; Xiaoming, Liu

Author_Institution

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

Volume

2

fYear

2006

fDate

25-29 Sept. 2006

Firstpage

478

Lastpage

481

Abstract

A time-domain mathematical model of electric field is introduced to calculate the transient electric field of the outdoor vacuum circuit breaker. The lightning impulse voltage is expressed by double-exponential function, which is regarded as a component of the boundary excitation in solved region. Under lightning impulse voltage, the potential distributions curves of external insulation are calculated when the outdoor vacuum circuit breaker is in the closed state and the other potential distributions curves in vacuum breaker and on external insulation are also calculated when breaker is in the open state. Electric intensity distribution curves on the surface of external insulation and contact are also shown in this paper. The maximum of intensity in solved region is also given. Some distinguishing features of the transient field are also discussed. It is essential for vacuum circuit breaker insulation design

Keywords

electric field effects; electric potential; lightning; time-domain analysis; transient analysis; vacuum circuit breakers; 10 kV; boundary excitation; contact surface; electric intensity distribution; external insulation; insulation surface; lightning impulse voltage; outdoor vacuum circuit breaker; potential distributions; time-domain mathematical model; transient electric field analysis; vacuum circuit breaker insulation; Circuit breakers; Dielectrics and electrical insulation; Lightning; Mathematical model; Power system transients; Time domain analysis; Transient analysis; Vacuum systems; Vacuum technology; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Discharges and Electrical Insulation in Vacuum, 2006. ISDEIV '06. International Symposium on

Conference_Location

Matsue

ISSN

1093-2941

Print_ISBN

1-4244-0191-7

Electronic_ISBN

1093-2941

Type

conf

DOI

10.1109/DEIV.2006.357341

Filename

4194922