Ferroresonance due to the saturation of PT magnetizing characteristics is frequently reported to happen on the busbars of neutral grounded substations.

由于母线PT励磁特性的非线性，铁磁谐振频繁发生在中性点接地变电站的空母线上。

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There are several factors affecting neutral grounded transformers, among then, ground potential rise is most important.

对中性点接地变压器的影响因素包括多个，其中最主要的是地电位升。

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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.

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。

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