文献类型：会议论文

英文题名：Residual Voltages Analysis in Reclosing Process for Induction Machine

作者：Wang, Aiyuan[1,2];Ling, Zhihao[2];Liu, Wenbo[3]

机构：[1]Shanghai Danji Univ, Sch Elect Engn, 690 Jiangchuan Rd, Shanghai 200240, Peoples R China;[2]East China Univ Sci & Technol, Sch Informat Sci & Engn, Shanghai 200237, Peoples R China;[3]Shanghai Power Equipment Res Inst, Dept Elect, Shanghai 200240, Peoples R China

会议论文集：7th World Congress on Intelligent Control and Automation

会议日期：JUN 25-27, 2008

会议地点：Chongqing, PEOPLES R CHINA

语种：英文

外文关键词：Induction Machine; Reclosing; Residual Voltage; Transient Analysis

摘要：Induction motor required continuous running frequently comes with reclosing process due to interrupted supply in power frequency. However, large current and torque of the motor incidentally appear in the process. The paper firstly analyzes reclosing dynamic process of induction machine at the time of the absence supply and presence stator residual voltage. Then, the calculation model of stator residual voltage and rotor current at the period from absence supply to reclosing and stator current and motor torque after reclosing, has been established in three-phase stationary reference frame. In order to reduce impact current and torque at the reclosing instant, the paper analyzes the effect of phase difference of power supply and residual voltage on the current and torque, and presents a method of confirming optimal reclosing instant. By a simulating case, validity of the model and method has been verified, which provide a solid base for engineering application.