In ungrounded distribution system the single-phase-grounding and the ferro-resonance caused by the PT (Potential Transformer) are of the frequent accidents.
在中性点非直接接地电网中，单相接地及由电压互感器(PT)引起的谐振过电压均是多发性的事故。
The core structure of the arc suppression coil is improved to solve the nonlinearity of voltage with zero-excitation. The harm of ferro-resonance is thus reduced.
同时，通过改变消弧线圈铁芯结构，解决了在零励磁情况下电感的非线性问题，减少了铁磁谐振对电网造成的危害；
With examples this paper analyses the phenomenon of ferro-resonance caused by the grading capacitor and the effect of busbar's stray capacitance on ferroresonance.
本文结合实例分析了断口均压电容引起的铁磁谐振现象及母线对地杂散电容对谐振的影响。
PT breaking and ferro-resonance caused by single-phase grounding and PT saturation are common faults in medium-low voltage power networks, which make voltage abnormal.
在中低压电网中，PT断线、单相接地及由PT饱和引起的铁磁谐振均是多发性的故障，这些故障都能使电压异常。
In both of the cases above, the shift voltage of neutral point often appears. So one does not differ from the other easily, especially for the fundamental frequency ferro-resonance.
且由于二者往往均表现为中性点出现位移电压，尤其是基波谐振更不易与单相接地区分。
In both of the cases above, the shift voltage of neutral point often appears. So one does not differ from the other easily, especially for the fundamental frequency ferro-resonance.
且由于二者往往均表现为中性点出现位移电压，尤其是基波谐振更不易与单相接地区分。
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