The Effect of Gas Type on Flow Characteristics in a Circuit Breaker under Cold Flow Scenario

Authors

  • Y. Qiao Centre for Smart Grid, Department of Engineering, University of Exeter, Exeter, United Kingdom
  • S. Matharage Centre for Smart Grid, Department of Engineering, University of Exeter, Exeter, United Kingdom
  • Z. Wang Centre for Smart Grid, Department of Engineering, University of Exeter, Exeter, United Kingdom

DOI:

https://doi.org/10.14311/ppt.2023.3.136

Keywords:

gas circuit breakers, supersonic flow, shock, flow separation, gas properties

Abstract

This paper presents first stage of supersonic flow modelling in gas circuit breakers without an arc. Flow characterisation focused on shock and flow separation phenomenon. Velocity deceleration caused by shock will play a significant role in determining arc cooling performance and will impact thermal interruption capability. Gas properties such as specific heat ratio, density, and viscosity influenced the flow characteristics including shock location, strength and the flow separation process.

References

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Published

2023-10-11

Issue

Vol. 10 No. 3 (2023)

Section

Articles

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Copyright (c) 2023 Y. Qiao, S. Matharage, Z. Wang

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