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Transient recovery voltage and thermal performance of an airblast circuit breaker

Transient recovery voltage and thermal performance of an airblast circuit breaker

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  • Author(s): D. Birtwhistle 1 ; G.E. Gardner 2 ; B. Jones 3 ; R.J. Urwin 2
    • View affiliations
    • Affiliations: 1: Queensland Institute of Technology, Brisbane, Australia
      2: Physics & Electrical Research Section, Research & Development Department, Marchwood Engineering Laboratories, CEGB, Southampton, UK
      3: Central Electricity Research Laboratories, Electrical Engineering Division, CEGB, Leatherhead, UK
  • Source: Volume 120, Issue 9, September 1973, p. 994 – 1000
    DOI:  10.1049/piee.1973.0221 , Print ISSN 0020-3270, Online ISSN 2053-7891
© The Institution of Electrical Engineers
Published
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This paper examines the way in which the current-interrupting ability of a gas-blast circuit breaker is influenced by the initial transient recovery voltage (t.r.v.). Theoretical relationships are explored between t.r.v. waveshape, circuit-breaker are parameters and performance. Limitations which may result from the presence of high-frequency oscillations of the recovery voltage in the first few microseconds after current zero are also calculated. Encouraging agreement is obtained between calculations and the results of systematic experiments on an air-blast interrupter in a synthetic test plant. Possible applications of the work to the rating and testing of circuit breakers are discussed.

Inspec keywords: transients; circuit-breaking arcs; air blast circuit breakers; switchgear testing

Other keywords: transient recovery voltage; airblast circuit breaker; circuit breaking arcs; thermal performance; rating; HF oscillations

Subjects: Switchgear

References

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