利用功率微增量进行求和是目前输电损耗分摊中的一类代表性方法。文中讨论了该类方法所存在的积分路径相关性问题,表明等步长划分积分区间本身即是一类特殊且并无明显理论依据的求和(积分)路径,至少到目前为止,尚无相关理论可以支持这类特解在理论体系上的恰当性。对该类方法而言,如何克服其所存在的求和路径相关性问题仍然是一个开放的、有待解决的问题。 The summation of power micro-increment is a typical representative of current transmission loss distribution. In this paper, we discuss the problem of the correlation of integral paths in this kind of method, and show that the step partition integral interval itself is a special kind of summation (integral) path without obvious theoretical basis, at least so far Theory can support the appropriateness of such special solutions in the theoretical system. For such methods, how to overcome the existing problem of the relevance of the summing path remains an open and unresolved issue.