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

WU Yifei (吴益飞); REN Zhigang (任志刚); FENG Ying (冯英); LI Mei (李美); ZHANG Hantian (张含天)

doi:10.1088/1009-0630/18/3/14

Plasma Science and Technology > 2016 > 18(3): 299-304. > DOI: 10.1088/1009-0630/18/3/14

WU Yifei (吴益飞), REN Zhigang (任志刚), FENG Ying (冯英), LI Mei (李美), ZHANG Hantian (张含天). Analysis of Fault Arc in High-Speed Switch Applied in Hybrid Circuit Breaker[J]. Plasma Science and Technology, 2016, 18(3): 299-304. DOI: 10.1088/1009-0630/18/3/14

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

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

Funds: supported by National Key Basic Research Program of China (973 Program) (No. 2015CB251001), National Natural Science Foundation of China (Nos. 51221005, 51177124, 51377128, 51323012), the Science and Technology Project Funds of the Grid State Corporation SGSNKYOOKJJS1501564 and Shaanxi Province Natural Science Foundation of China (No. 2013JM-7010)

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Received Date: September 08, 2015

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Abstract

Abstract

he 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 di?erent arc currents is predicted.
- high-speed switch,
- fault arc,
- pressure rise,
- radiation

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References (1)

References

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