发生发展性故障后，利用保护安装处的全电流减去求得的支路电流得到发展性故障后的故障分量电流。
After an evolved fault occurred, the fault superimposed components can be calculated through subtracting the solved load currents from the currents at the measuring point.
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。
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.
高压输电线路发生故障后的暂态电压或电流分量中包含比工频分量更多的故障信息，充分利用这一信息是构成具有绝对选择性单端无通信保护的前提。
Moreover, it is the basis of constructing a new non communication protection through absolutely utilizing the fault information which is comprised in transient component of fault current or voltage.
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