首页|A Ranking Algorithm for the Thermal Interruption Ability of Potential SF6 Alternative Gases

A Ranking Algorithm for the Thermal Interruption Ability of Potential SF6 Alternative Gases

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  • NETL
  • NSTL
  • IEEE
A ranking algorithm is proposed to aid the screening or initial assessment of different gases for their thermal interruption capability in high voltage gas-blast circuit breakers. The algorithm is directly based on the gas material properties without involving any complicated arc simulation. Despite that it does not explicitly consider the influence of product design, the ranking results based on the proposed algorithm show good alignment with laboratory obtained thermal interruption data of five gases and commercial-scale test data for three promising SF6 alternative gases. An in-depth analysis of the influencing factors and mechanisms responsible for the differing thermal interruption abilities of gases has been carried out, showing that the dominance of the arc column size near current zero in the arc cooling process is a natural consequence of the gas properties, especially the product of density and specific heat at constant pressure and electrical conductivity over the temperature range of 500K to 15,000K.

GasesCoolingTemperature distributionPower system reliabilityIntegrated circuit modelingCircuit breakersTemperature measurementMaterial propertiesAnalytical modelsThermal stability

Jiu Dun Yan、Kaiyuan Zhang、Rui Cao、Yi Wu

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Department of Electrical Engineering and Electronics, University of Liverpool, Liverpool, U.K.|Xi'an Jiaotong University, Xi'an, Shaanxi, China

Department of Electrical Engineering and Electronics, University of Liverpool, Liverpool, U.K.

Department of Electrical Engineering and Electronics, University of Liverpool, Liverpool, U.K.|Xi'an High Voltage Apparatus Research Institute Company, Ltd, Xi'an, Shaanxi, China

State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University, Xi'an, Shaanxi, China

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2025

10.1109/TPWRD.2024.3518603

IEEE transactions on power delivery

IEEE transactions on power delivery

ISSN：
年,卷(期)：2025.40(2)
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