标题：Simulation Analysis of Transformer Inrush Current Based on the Same Switching Angle
作者：Qi, Guo Zheng; Liu, Zhi Zhen; Yang, Yong; Liao, Wei Ping
作者机构：[Qi, Guo Zheng; Liu, Zhi Zhen; Yang, Yong; Liao, Wei Ping] Shandong Univ, Sch Elect Engn, Jinan 250061, Peoples R China.
会议名称：IEEE International Conference on Applied Superconductivity and Electromagnetic Devices (ASEMD)
会议日期：NOV 20-23, 2015
来源：2015 IEEE International Conference on Applied Superconductivity and Electromagnetic Devices (ASEMD)
关键词：inrush current; same switching angle; magnetic flux analysis
摘要：High-magnitude inrush current happens when the no-load transformer core falls into saturation during energization. A new method of suppressing the inrush current from a three-phase transformer is proposed based on the principle of the same switching angle. The closing time of transformer is obtained by the actual opening time. The results of simulation show that the size of the synthesized magnetic flux is closely related to the synthetic voltage and the inrush current of each phase is closely related to its flux. The strategy completely eliminates the transient flux, and then the transformer runs directly in the steady state.