段雄英

个人信息Personal Information

教授

博士生导师

硕士生导师

性别:女

毕业院校:华中科技大学

学位:博士

所在单位:电气工程学院

学科:电机与电器. 高电压与绝缘技术

办公地点:电力电子研究所405

联系方式:0411-84708919

电子邮箱:dxy@dlut.edu.cn

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Investigation on Transformer Inrush Current Switched by Controlled Vacuum Circuit Breaker

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论文类型:会议论文

发表时间:2018-01-01

收录刊物:CPCI-S

卷号:2

页面范围:563-566

关键字:Inrush Current; VCB Closing Resistor; Controlled Switching

摘要:When the no-load transformer is energized with the vacuum circuit breaker (VCB), the magnetizing inrush current with large amplitude will be generated due to the saturation of the core flux, which endangers the safety of the power system. The influence of the operating time scatters of VCB on the inrush current suppression is analyzed. The principle of VCB closing resistor to suppress inrush current is expounded. The combination of VCB closing resistor and controlled switching technology is proposed, which maximizes the effect of inrush current suppression. The influence of different factors on the inrush current is simulated by EMTP/ATP to obtain the best scheme to suppress the inrush current. At last, the accuracy of the controlled method is verified by the experiments. The results have guiding significance for restraining the inrush current during no-load transformer switching.