The widely used symmetrical coordinates method for power system analysis is reviewed and com-pared with the direct phase coordinates method.
本文对电力系统分析计算中的对称分量法进行了评述，并与相坐标法进行比较。
The symmetrical points of the coordinates of measurement points indicate coordinates of the points left, and the right and the left are symmetrical.
测量点坐标左右对称点表明的是左侧点坐标，右侧与左侧对称。
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