为降低长输电线路的电流不平衡度，需要进行导线换位。
Conductor transposition is necessary to reduce unbalanced current in long transmission lines.
因此必须利用导线换位，并且采用适当的相序排列方式以及换位方向来减小线路的不平衡度。
Therefore, to minimize line imbalance, conductor transposition, as well as proper phase sequence and transposition orientation have to be used.
文章详细介绍了换位导线的特性、用途和在我国的应用情况。
The paper introduces the characteristics and the use of transposed conductor in detail and its application condition in China.
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