提出了一种基于同杆双回线单端电流量的故障测距方法。在故障状态下，双回线可以分解成同向网和环流网，其中环流网只与双回线有关，且两端电压为零。

The method for fault location of the parallel transmission lines on the same tower based on single-terminal current is proposed in this paper.

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本文比较分析了各种测距算法，并在此基础上提出了一种同杆并架双回线的故障测距新算法。

This paper compares and analyses all sorts of fault location algorithms, and puts forward a new fault location algorithm for double transmission line on the same tower.

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比较分析了各种主要的测距算法，并在此基础上提出了一种同杆并架双回线的故障测距新算法。

This paper compares and analyses various types of main fault location algorithms and puts forward a new fault location algorithm for double transmission lines on a same tower.

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