Analysis of Fault Arc in High-Speed Switch Applied in Hybrid Circuit Breaker

The behavior of fault arc in a high-speed switch （HSS） has been studied theoretically and experimentally. A simplified HSS setup is designed to support this work. A two-dimensional arc model is developed to analyze the characteristics of fault arc based on magnetic-hydrodynamic （MHD） theory. The adv...

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Bibliographic Details
Published inPlasma science & technology Vol. 18; no. 3; pp. 299 - 304
Main Author 吴益飞 任志刚 冯英 李美 张含天
Format Journal Article
LanguageEnglish
Published 01.03.2016
Subjects
Coefficients
Faults
High speed
High speed tool steels
Hybrid circuits
Mathematical models
Switches
Two dimensional
压力上升
故障电弧
模型分析
模型预测
混合式断路器
热传递系数
磁流体动力
高速开关
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ISSN1009-0630
DOI10.1088/1009-0630/18/3/14

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Summary:The behavior of fault arc in a high-speed switch （HSS） has been studied theoretically and experimentally. A simplified HSS setup is designed to support this work. A two-dimensional arc model is developed to analyze the characteristics of fault arc based on magnetic-hydrodynamic （MHD） theory. The advantage of such a model is that the thermal transfer coefficient can be determined by depending on the numerical method alone. The influence of net emission coefficients （NEC） radiation model and P1 model on fault arc is analyzed in detail. Results show that NEC model predicts more radiation energy and less pressure rise without the re-absorption effect considered. As a consequence, P1 model is more suitable to calculate the pressure rise caused by fault arc. Finally, the pressure rise during longer arcing time for different arc currents is predicted.
Bibliography:The behavior of fault arc in a high-speed switch （HSS） has been studied theoretically and experimentally. A simplified HSS setup is designed to support this work. A two-dimensional arc model is developed to analyze the characteristics of fault arc based on magnetic-hydrodynamic （MHD） theory. The advantage of such a model is that the thermal transfer coefficient can be determined by depending on the numerical method alone. The influence of net emission coefficients （NEC） radiation model and P1 model on fault arc is analyzed in detail. Results show that NEC model predicts more radiation energy and less pressure rise without the re-absorption effect considered. As a consequence, P1 model is more suitable to calculate the pressure rise caused by fault arc. Finally, the pressure rise during longer arcing time for different arc currents is predicted.
WU Yifei , REN Zhigang , FENG Ying , LI Mei , ZHANG nantian 1State Key Laboratory of Electrical Insulation and Power Equipment, Xi!an Jiaotong University, Xi＇an 710049, China 2China Electric Power Research Institute, Beijing 100192, China
34-1187/TL
high-speed switch, fault arc, pressure rise, radiation
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1009-0630
DOI:10.1088/1009-0630/18/3/14