The flow distribution of water supply network node was a necessary requirement of the hydraulic model. Node flow should reflect the working condition of the whole network as much as possible. Node flow used hierarchical metering zone allocation method when water distribution network structure is complex and large scale. Known node flow was according to the nearest pipe method in the second metering zone. Non-revenue water node flow was according to the unit line method in the third metering zone. According to the calculation, the node of water distribution network model water consumption variance was basically consistent. Hierarchical metering zone allocation method was better than the traditional one.
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