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摘 要 ：动力分散系统以支路水泵代替调节阀，虽可消除调节阀能耗，减少系统的输送能耗，但是过多的支路水泵可能造成初投资的增加、维护费用的增加以及管理难度的增大。本文从减少输送能耗出发，兼顾各方面因素，探讨系统动力的合理分散程度，并以一个具有五级网路的系统为例进行分析。 关键词 ：动力分散系统 分散程度 节能率 调节阀能耗 Discussion On Dispersion Degree Of Separate Power Systems Jiao Yang Fu Yongzheng Wuhan University of Science ＆ Technology,Wuhan,China Abstract: In the separate power system branch circuits pumps replace the regulating valves. Although this way can eliminates the regulating valve energy consumption, reduces system's transportation energy consumption, but the excessive pumps possibly create at increasing the initially invests and maintenance cost as well as the management difficulty. This article mainly considering to reduce transportation energy consumption, giving attention to various factors, discusses the reasonable dispersion degree and carries on the analysis take a five level system as the example. Keyword: separate power systems dispersion degree fractional energy savings valve energy consumption