The transformation of the instantaneous value symmetry component applied, the positive sequence space vector of fault component of the voltage and current can be derived.

应用瞬时值对称分量变换，可提取电压、电流故障分量的正序空间向量。

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This paper also proposed a new fault locating method based on either the active component increment or the amplitude increment of zero-sequence current.

提出了零序电流有功增量和零序电流幅值增量作为判据的故障点定位方法。

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