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 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。
The grounding line selector SL-11 has passed field tests of single-phase-grounding line selection in non-solidly grounding system, which is based on current transient traveling wave.
将基于暂态行波的接地选线技术应用于现场，实现了基于电流行波的配电系统故障选线装置SL-11，并在现场对装置进行了多次试验。
Combined with the research status of single-phase-to-ground fault locating for small current grounding system, a new idea based on non-fault-phase transient current is presented.
针对小电流接地系统单相接地故障定位的研究现状，提出基于非故障相暂态电流的单相接地故障定位的思想。
A faulty feeder selector based on traveling wave theory and IEC61850 standard is developed for the single-phase grounding fault of digital substation in non-solid grounding power system.
基于故障行波理论和IEC61850标准，研制了中性点非有效接地系统数字化变电站中的单相接地故障行波选线装置。
A faulty feeder selector based on traveling wave theory and IEC61850 standard is developed for the single-phase grounding fault of digital substation in non-solid grounding power system.
基于故障行波理论和IEC61850标准，研制了中性点非有效接地系统数字化变电站中的单相接地故障行波选线装置。
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