由于安全系数的目标函数是非凸的、多变量的并且存在多个极小值，所以一般边坡最危险滑弧的搜索是困难的。

Because the objective function of the safety of factor is nonconvex, multi-variable, and existing many minimums, searching the most dangerous failure surface usually is difficult.

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对基于过热弧搜索的配电网故障定位方法进行了多方面分析，讨论了其不足之处。

The distribution network fault location method based on over-heated arc is analyzed in various aspects, and its deficiencies are reviewed.

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