On Small Current Grounding System in Single-phase Grounding Fault Line Selection Based on DSP

作     者：LI Bo1,CHU Lili1,LIU Yanjun2 1 Information Science&Engineering College,Liaoning University of Technology,Jinzhou 121001,P.R.China2 School of Sciences,Liaoning University of Technology,Jinzhou 121001,P.R.China 

会议名称：《第二十九届中国控制会议》

会议日期：2010年

学科分类：0808[工学-电气工程] 080803[工学-高电压与绝缘技术] 08[工学] 

关 键 词：Line Selection Transient Current Spectrum DSP Feature Band 

摘      要：The fault mechanism of small current grounding system in single-phase grounding is discussed,and the principle of fault line selection of transient component on faulty phase current is *** the design of hardware and software,it is proved the amplitudes summation of zero sequence transition current between fault line and healthy lines makes a big difference in the feature *** analysis of the system simulation shows the area of zero sequence transition current on fault line in the spectrum is the ***,the application of small current grounding system in single-phase grounding fault line selection based on DSP is an advanced novel method which can distinguish between fault line and healthy lines effectively and accurately.