Research on the Effect of Splitter Plate Material and Structure on Arc Extinguishing Performance with Coupling Magnetic Field
Peng Shidong1, Li Jing1, Cao Yundong1, Liu Shuxin1, Yu Longbin2
1. Key Lab of Special Electric Machine and High Voltage Apparatus College of Electrical Engineering Shenyang University of Technology Shenyang 110870 China; 2. State Grid Liaoning Electric Power Research Institute Shenyang 110006 China
Abstract：The material and structure of splitter plates have significant influence on the arc extinguishing performance of circuit breaker. The magnetic field calculation model and arc magnetohydrodynamic (MHD) model were established in this paper under the action of permanent magnet and the two models are coupled. The influences of splitter plates material and splitter plates structure on arc dynamic characteristics under the action of permanent magnet were simulated and analyzed on the basis of the models with considering the influence of the polarity of the power source. The spatial distribution of magnetic field in arc chamber under the action of permanent magnet, temperature distribution and air flow distribution in arc chamber under the action of electromagnetic were obtained. The key parameters such as average temperature in arc chamber and arc duration time were extracted, and the effects of splitter plates material and splitter plates structure on arc characteristics were discussed. The results show that the iron splitter plates will cause magnetic short circuit phenomenon in arc chamber under the action of external magnetic field. Under the same simulation parameters, the arc duration time with iron splitter plates in arc chamber is the longest, and the moving contact as the anode is more conducive to arc root commutation so as to shorten arc duration. For the same interrupting current, the cooling effect of copper-insulated splitter plates are the most effective. Airflow field distribution can be distorted by the inclination angle of splitter plates, which affects the arc duration time.
彭世东, 李静, 曹云东, 刘树鑫, 于龙滨. 耦合磁场直流空气断路器栅片特性对灭弧性能的影响研究[J]. 电工技术学报, 2022, 37(21): 5587-5597.
Peng Shidong, Li Jing, Cao Yundong, Liu Shuxin, Yu Longbin. Research on the Effect of Splitter Plate Material and Structure on Arc Extinguishing Performance with Coupling Magnetic Field. Transactions of China Electrotechnical Society, 2022, 37(21): 5587-5597.
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