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

作　　者：吴益飞 任志刚 冯英 李美 张含天 

机构地区：[1]State Key Laboratory of Electrical Insulation and Power Equipment,Xi’an Jiaotong University,Xi'an 710049,China [2]China Electric Power Research Institute,Beijing 100192,China

出　　处：《Plasma Science and Technology》2016年第3期299-304,共6页等离子体科学和技术（英文版）

基　　金：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;Shaanxi Province Natural Science Foundation of China(No.2013JM-7010)

摘　　要：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.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.

关 键 词：high-speed switch fault arc pressure rise RADIATION 

分 类 号：TM561[电气工程—电器]