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。

In ungrounded distribution system the single-phase-grounding and the ferro-resonance caused by the PT (Potential Transformer) are of the frequent accidents.

youdao

相对于中性点非直接接地系统而言，发生在中性点直接接地系统中的铁磁谐振过电压有着许多新的特点，而且对它的研究相对较少。

Compared with neutral ungrounded power system, ferroresonance overvoltage occurred in neutral grounded power system has more new features, and the research about it is much.

youdao

相对于中性点非直接接地系统而言，发生在中性点直接接地系统中的铁磁谐振过电压有着许多新的特点，而且对它的研究相对较少。

Compared with neutral ungrounded power system, ferroresonance overvoltage occurred in neutral grounded power system has more new features, and the research about it is much.

youdao