The principles of using signal injection method to detect single-phase earth fault of distribution network at present are compared and analyzed.
对目前配网采用信号注入法检测单相接地故障的原理进行比较分析。
Low current earth system goes wrong, and type of failure of the maximal odds is Single-phase earth fault, which occupies 80 percent of all fault time.
单相接地故障是小电流接地系统发生几率最高的故障类型，约占所有故障次数的80%。
To avoid happen failure or remove hidden trouble as soon as possible, Single-phase earth fault of low current earth system is analyzed and discussed in-depth in this text.
为了避免故障的发生或故障后尽快消除隐患，本文就小电流接地系统单相接地故障进行了深入的分析与论述。
Using transient traveling waves generated by fault to locate single-phase earth fault or short circuit fault in distribution feeders mixed with overhead lines and cables is proposed.
该文提出利用线路故障产生的暂态行波实现配电架空线、电缆混合线路单相接地及相间短路故障测距，分析了故障初始行波模分量的暂态特征。
Digital transformer differential protection may falsely take effective when external single-phase earth fault occurs at star side or the line endures lightning strike on single phase.
数字式变压器差动保护在星形侧发生外部单相接地或线路单相遭雷击的情况下，差动保护有时会误动。
The single-phase-to-earth fault in the system takes place frequently.
在这类系统中，发生最多的是单相接地故障。
In this paper, the method based on the combination of wavelet transform and BP neural network is presented to realize fault location for the single-phase-to-earth fault in non-direct-ground systems.
提出一种基于小波变换与BP神经网络相结合的方法来实现小电流接地系统单相接地故障定位。
When single-phase-to-earth fault occurs on a neutral non-direct grounded power system, it is nexessary for improving the reliability of power supplying to select the faulted line quickly.
中性点非有效接地配电网发生单相接地故障时，尽快选出故障线路对提高电网的供电可靠性有重要意义。
When single-phase-to-earth fault occurs on a neutral non-direct grounded power system, it is nexessary for improving the reliability of power supplying to select the faulted line quickly.
中性点非有效接地配电网发生单相接地故障时，尽快选出故障线路对提高电网的供电可靠性有重要意义。
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