摘要
对中性点不接地电网中铁磁谐振产生的原因以及常用的消谐措施进行了系统分析,对出现比较频繁的单相接地故障所激发的铁磁谐振及其抑制方法展开了深入讨论。提出了一种新型消谐器的结构,研究了其工作原理,并通过EMTDC/PSCAD的仿真,验证了所提出方案的有效性。
The causes and suppression measures in common use of ferromagnetic resonance in 10 kV neutral ungrounded system are analyzed. Ferromagnetic resonance caused by the single- phase earth fault which frequently occurs and its corresponding suppression treasures are discussed. The structure of a new resonance eliminator is put forward and its working principle is studied. Then the validity of proposed scheme is verified by EMTDC/PSCAD - based simulation results.
出处
《四川电力技术》
2005年第4期11-12,14,共3页
Sichuan Electric Power Technology
关键词
电磁式电压互感器
铁磁谐振
饱和
electromagnetic PT
ferromagnetic resonance
saturation
