NUMERICAL STUDY ON THE INTERACTION OF ELECTRICAL ARC-GAS FLOW NEAR CURRENT ZERO IN A SF6 SELF-BLAST INTERRUPTER

作     者：JONG-CHUL LEE HONG-KYU KIM 

作者单位：School of Mechanical and Automotive EngineeringGangneung-Wonju National University 220711 WonjuRep.of Korea. Korea Electrotechnology Research Institute 641120 ChangwonRep.of Korea. 

会议名称：《The ⅪⅩ International Conference on Gas Discharges and Their Applications》

会议日期：2012年

学科分类：080801[工学-电机与电器] 0808[工学-电气工程] 080704[工学-流体机械及工程] 080103[工学-流体力学] 08[工学] 0807[工学-动力工程及工程热物理] 0801[工学-力学（可授工学、理学学位）] 

基　　金：supported by the Power Generation & Electricity Delivery of the Korea Institute of Energy Technology Evaluation and Planning(KETEP) grant funded by the Korea government Ministry of Knowledge Economy (No.2009101030001 A) 

关 键 词：current zero Sulfur Hexafluoride air flow interrupters fault currents Electricity EXPANSION CHAMBER arcs Force Zero NATIONAL EMERGENCY ALARM REPEATER currents electric current zero phase 

摘      要：In SF self-blast interrupters,electrical arcs make hot gas flows driven into the expansion chamber for generating the blowing-off force during the high-current *** the fault current approaches natural current zero,this force can be used for cooling down and quenching the residual *** the interaction of electrical arc-gas flow is critical to predict the phenomena happened after current zero such as thermal breakdown *** this study,we calculated SF arc plasmas caused by fault current interruption inside a self-blast interrupter using a computational fluid dynamics(CFD) technique and investigated the thermal interruption performance with the specified arc model for the current zero phase.