Novel Theory of Identifying Inrush Current Based on Half-cycle Sine Waveform

摘要：

A novel theory of identifying inrush current and fault current based on the different characteristics of waveform, which is a sine function during normal operation and internal fault; the magnetizing inrush current possesses fastigium wave characteristic with non-periodic components and intermittent angle. By identifying the extreme point of the waveform in all cases, a corresponding half cycle sine waveform was constructed. Then K function of sine degree of nearness is defined, according to the A value of differential current, both inrush current and fault current of power transformers can be distinguished. Results of dynamic tests show that the proposed method is feasible and correct

关键词： transformer inrush fault current fastigium wave sine degree of nearness

作者: SUN Yang HUANG Jia-dong CHEN Da-Zhuang

作者单位: Power Engineering North China Electric Power University Baoding, Hebei 071003, China Power Engineering North China Electric Power University Baoding, He bei 071003, China

会议类型: 国际会议

会议名称: 2010 International Conference on Computer,Mechatronics,Control and Electronic Engineering(2010计算机、机电、控制与电子工程国际会议 CMCE 2010)

会议地点: 长春

会议语种:英文

页码: 96-99

在线出版日期: 2010-08-24（万方平台首次上网日期，不代表论文的发表时间）