NDLI: Numerical analysis of the external insulation of outdoor vacuum circuit breaker under lightning impulse voltage

Content Provider	IEEE Xplore Digital Library
Author	Gao Youhua Wang Erzhi Li Yanbin Cao Yundong
Copyright Year	2004
Abstract	In this paper, a new mathematical model combining electric field and current,field is introduced and finite element method is adopted to calkulate the transient electric field of the external insulation of the outdoor vacuum circuit breaker. Dielectric medium with permittivity E and conductivity y under lightning impulse is taken into account. The response caused by lightning impulse voltage i s expressed by Duhamel integration, which is regarded as the boundary excitation of solved region. Under lightning impulse voltage, the potential distributions of external insulation at representative time are shown. Electric intensity distribution curves on external insulation surface with respect to time are also calculated in this paper. The maximum of intensity on external insulation surface is also given, which are compared with the one in the static field. Some distinguishing features of the transient field arc also discussed. It is essential for vacuum circuit breaker insulation design.
Starting Page	110
Ending Page	113
File Size	269962
Page Count	4
File Format	PDF
ISBN	078038461X
ISSN	10932941
DOI	10.1109/DEIV.2004.1418616
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-09-27
Publisher Place	Crimea
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Numerical analysis Circuit breakers Lightning Voltage Dielectrics and electrical insulation Conductivity Power system transients Vacuum technology Mathematical model Permittivity
Content Type	Text
Resource Type	Article
Subject	Computer Networks and Communications Software

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