铁磁谐振介绍：
Ferromagnetic Resonance Introduction:
1.中性点非有效接地系统中，PT的铁磁谐振，不仅会使PT绕组电压升高，电源中性点会有很大的位移电压，出现这种电压会在开口三角绕组上出现虚拟接地信号。
1. In the neutral point ineffective grounding system, the ferroresonance of PT will not only increase the voltage of PT winding, but also cause a large displacement voltage at the neutral point of power supply. The virtual grounding signal will appear on the open triangle winding when this voltage occurs.
2.发生铁磁谐振后，电流增大到额定电流的百倍以上，极易造成热击穿，破坏热稳定。

2. After ferroresonance occurs, the current increases to more than 100 times the rated current, which www.zhutiezhamen.net.cnwww.buxiugangwanguan.cnwww.penwuganzaojii.cnwww.gangchensu.cn

www.chenban.net.cnwww.taocichenban.cnwill easily cause thermal breakdown and destroy thermal stability.

3.在谐振时，整个谐振回路的特性会发生改变，会导致电压相位的反顾。
3. In resonance, the characteristics of the whole resonance circuit will change, which will lead to voltage phase reversal.
4.过电压值受饱和限制，出现高频谐振，过电压倍数大，谐振次数高，过电压倍数越大，分数次谐振，过电压可达两倍左右。
4. The over-voltage value is limited by saturation, high frequency resonance occurs, the over-voltage multiple is large, the number of resonances is high, the greater the over-voltage multiple is, the fractional resonance can reach about twice the over-voltage