Simulation of Fault Arc Based on Different Radiation Models in a Closed Tank  

作　　者：李美 张俊鹏 胡杨 张含天 吴益飞 

机构地区：[1]State Key Laboratory of Electrical Insulation and Power Equipment,Xi'an Jiaotong University

出　　处：《Plasma Science and Technology》2016年第5期549-553,共5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.2015CB251002);National Natural Science Foundation of China(Nos.51221005,51177124);the Fundamental Research Funds for the Central Universities;the Program for New Century Excellent Talents in University;Shaanxi Province Natural Science Foundation of China(No.2013JM-7010)

摘　　要：This paper focuses on the simulation of a fault arc in a closed tank based on the magneto-hydrodynamic （MHD） method, in which a comparative study of three radiation models, including net emission coefficients （NEC）, semi-empirical model based on NEC as well as the P1 model, is developed. The pressure rise calculated by the three radiation models are compared to the measured results. Particularly when the senti-empirical model is used, the effect of different boundary temperatures of the re-absorption layer in the semi-empirical model on pressure rise is concentrated on. The results show that the re-absorption effect in the low-temperature region affects radiation transfer of fault arcs evidently, and thus the internal pressure rise. Compared with the NEC model, P1 and the semi-empirical model with 0.7 〈 α 〈 0.83 are more suitable to calculate the pressure rise of the fault arc, where is an adjusted parameter involving the boundary temperature of the re-absorption region in the semi-empirical model.This paper focuses on the simulation of a fault arc in a closed tank based on the magneto-hydrodynamic （MHD） method, in which a comparative study of three radiation models, including net emission coefficients （NEC）, semi-empirical model based on NEC as well as the P1 model, is developed. The pressure rise calculated by the three radiation models are compared to the measured results. Particularly when the senti-empirical model is used, the effect of different boundary temperatures of the re-absorption layer in the semi-empirical model on pressure rise is concentrated on. The results show that the re-absorption effect in the low-temperature region affects radiation transfer of fault arcs evidently, and thus the internal pressure rise. Compared with the NEC model, P1 and the semi-empirical model with 0.7 〈 α 〈 0.83 are more suitable to calculate the pressure rise of the fault arc, where is an adjusted parameter involving the boundary temperature of the re-absorption region in the semi-empirical model.

关 键 词：fault arc MHD method radiation model pressure rise 

分 类 号：TM501.2[电气工程—电器]