The way of neutral grounding in 380V LV distribution system was introduced and the characteristics of grounded and non grounded systems were analyzed.
本文介绍了380V低压配电系统中性点的接地方式，分析了接地与不接地系统特性。
In view of energy, the different frequency band is chosen corresponding to the distribution system with the different neutral grounding mode.
对于中性点接地方式不同的配电网，按照能量的观点，选择不同的频带来实现故障选线。
In view of energy, using waveform recognition, the different frequency band is chosen corresponding to the distribution system with the different neutral grounding mode in SFB.
对于中性点接地方式不同的配电网，按照能量的观点，在SFB频段内选择不同的频带利用波形识别技术来实现故障选线。
The article introduces voltage unbalance of neutral non-grounding system, analyzes the cause of voltage unbalance. It is valuable on fault analysis in practice.
介绍了中性点不接地系统的几种电压不平衡现象，分析了不平衡现象产生的原因，对于运行中的故障分析具有一定的指导意义。
The article introduces voltage unbalance of neutral non-grounding system, analyzes the cause of voltage unbalance. It is valuable on fault analysis in practice.
介绍了中性点不接地系统的几种电压不平衡现象，分析了不平衡现象产生的原因，对于运行中的故障分析具有一定的指导意义。
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