电压互感器 V-I 特性对谐振影响的物理仿真

Simulating Test on Effects of V—I Characteristic of Electromagnetic Voltage Transformer on Ferroresonance

在模拟试验的基础上，探讨了中性点绝缘电网电磁式电压互感器的Ｖ—Ｉ特性对电网铁磁谐振的影响，在操作电网时，如果Ｖ—Ｉ特性差别大，其谐振区谐振性质有较大差异。文中给出了具有不同Ｖ—Ｉ特性ＰＴ的谐振区间和谐振性质及重要结论。

Based on the simulation test, the effects of V—Icharacteristic of electromagnetic voltage transformers on ferromagnetic resonance of power systems with insulated neutral are studied. The results show that different saturant degree of V—I characteristic will cause different stability domains. As a result, the interval and the property of resonance may be different. The domain and the property of resonance corresponded to three group of voltage transformers are given and analyzed, and the conclusions are put forward.