...保护 0 引言 我国6~66 kV 中压电网普遍采用中性点非有效 接地方式，具体包括3种：中性点不接地系统(neutral ungrounded system，NUS)；中性点经消弧线圈接地， 即谐振接地系统(neutral resonant-grounded sys...
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ungrounded neutral system 中线不接地系统
Neutral ungrounded solidly system 中性点不直接接地系统
neutral point ungrounded system 中性点不接地系统
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。
In the neutral ungrounded power system, ferroresonance over-voltage due to electromagnetic transformer takes place frequently.
在中性点不接地电网中，频繁发生由电磁式电压互感器引起的铁磁谐振现象。
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