Simulation and Experimental Study of Arc Motion in a Low-Voltage Circuit Breaker Considering Wall Ablation
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概要
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This paper focuses on the numerical and experimental investigations of the influence of two polymers (PA6 and POM) on the arc behavior during arc motion process. The mathematical model of 3-dimentional air arc plasma considering the ablation of lateral walls is built based on magnetic hydro-dynamics (MHD). By adopting the commercial computational fluid dynamics (CFD) package based on control-volume method, the above MHD model is solved and the distribution of temperature field, concentration field, flow field and electrical potential field in the arc chamber are calculated. The simulation results indicate that the vapor concentration behind the arc column is higher than that in front of the arc column because of the existence of “double vortices” in the arc chamber. The use of polymers causes the maximal arc voltage increase 16.2% with POM and 18.9% with PA6 in this case and causes the average arc velocity increase 15.8% with POM and 21.1% with PA6 in this case. The experiments are also carried out to study the influence of polymers on arc voltage and arc root position in the arc chamber during arc motion. The experimental results prove the validity of the numerical investigation.
- （社）電子情報通信学会の論文
- 2008-08-01
著者
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MURPHY Anthony
CSIRO Materials Science and Engineering
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Murphy Anthony
Csiro
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Murphy Anthony
Csiro Industrial Physics
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Wu Yi
Xi'an Jiaotong Univ. Xi'an Chn
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Wu Yi
State Key Lab Of Electrical Insulation And Power Equipment School Of Electrical Engineering Xi'
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MA Qiang
State Key Lab of Electrical Insulation and Power Equipment, Xi'an Jiaotong University
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RONG Mingzhe
State Key Lab of Electrical Insulation and Power Equipment, Xi'an Jiaotong University
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XU Tiejun
State Key Lab of Electrical Insulation and Power Equipment, Xi'an Jiaotong University
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YANG Fei
State Key Lab of Electrical Insulation and Power Equipment, Xi'an Jiaotong University
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Yang Fei
State Key Lab Of Electrical Insulation And Power Equipment School Of Electrical Engineering
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Wu Yi
State Key Lab Of Electrical Insulation And Power Equipment School Of Electrical Engineering
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Wu Yi
State Key Lab Of Electrical Insulating And Power Equipment Xi'an Jiaotong University
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Ma Qiang
State Key Laboratory Of Electrical Insulation And Power Equipment Xi'an Jiaotong University
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Xu Tiejun
State Key Laboratory Of Electrical Insulation And Power Equipment Xi'an Jiaotong University
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Rong Mingzhe
State Key Lab Of Electrical Insulating And Power Equipment Xi'an Jiaotong University
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