单相接地故障与串联谐振的辨识  

Identification of Single-Phase-to-Ground Faults and Series Resonances

作　　者：徐波[1] 程孟增[2] 朱旻捷 

机构地区：[1]上海电力学院,上海200090 [2]国网辽宁省电力有限公司经济技术研究院,辽宁沈阳110016 [3]国网上海金山供电公司,上海200540

出　　处：《上海电力学院学报》2014年第6期563-568,共6页Journal of Shanghai University of Electric Power

摘　　要：采用时域法分析了串联谐振的发展过程,研究了中性点电压的变化特点,发现串联谐振时中性点电压的发展过程与单相接地故障消失后的情形完全不同.通过辨识单相接地故障与串联谐振,提出了一种消弧线圈有效退出的控制策略,并通过理论分析和仿真实验证实了该方法的可行性和有效性.With a time-domain method,the mechanism of the SR is analyzed and the recovery process of the neutral voltage is studied. It is found that the neutral recovery voltage is significantly different from that in the SPG fault. Accordingly,a quit strategy about the ASC is proposed by the identification of SPG faults and SR. Finally,simulations,as well as theoretical analyses,illustrate the feasibility and validity of this method.

关 键 词：串联谐振 单相接地故障 补偿电网 消弧线圈 

分 类 号：TM773[电气工程—电力系统及自动化]