Overvoltages and reignition behavior of vacuum circuit breaker

S. M. Wong, L. A. Snider, Wai Chau Edward Lo

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

46 Citations (Scopus)

Abstract

Vacuum circuit breakers (VCB) have excellent interruption and dielectric recovery characteristics, and can interrupt the high frequency currents which result from arc instability, superimposed on the line frequency current. The interruption of these high frequency currents is called virtual current chopping, and can lead to repeated reignitions when the breakers are opening, resulting in severe voltage escalations under certain network conditions. In order to estimate the probability of such transients, a mathematical breaker model has been developed in ATP / EMTP. The model incorporates the random nature of arcing time, current chopping, dielectric strength and the quenching capability of the breaker. The performance of forty-eight representative of breakers (four kinds of dielectric strength and four kinds of quenching capability with three different time ranges of the opening of the breaker) with specific network were analyzed and the results are presented in this paper.
Original languageEnglish
Title of host publicationSixth International Conference on Advances in Power System Control, Operation and Management - Proceedings
Pages653-658
Number of pages6
Volume2
Publication statusPublished - 1 Dec 2003
EventSixth International Conference on Advances in Power System Control, Operation and Management - Proceedings - Hong Kong, Hong Kong
Duration: 11 Nov 200314 Nov 2003

Conference

ConferenceSixth International Conference on Advances in Power System Control, Operation and Management - Proceedings
Country/TerritoryHong Kong
CityHong Kong
Period11/11/0314/11/03

ASJC Scopus subject areas

  • Engineering(all)

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