New Method to Identify Inrush Current Based on Half-wave Fourier Analysis
HAN Zheng-qing, GAO Shi-bin, LI Qun-zhan (Southwest Jiaotong University, Chengdu 610031, China)
This paper analyzes the difference between the magnetizing inrush current and other currents of transformer, and proposes a new method based on half-wave Fourier analysis to identify inrush current. Theoretical analysis and dynamic analog testing results indicate that the proposed new method can solve certain problems of associated with the traditional restraint methods and can distinguish inrush current, including symmetrical inrush current, from internal fault current.
【CateGory Index】： TM77