A dma real-time modeling method for urban water supply network

Abstract

The invention discloses a DMA real-time modeling method for a city water supply pipe network. The method comprises following steps: firstly, constructing a DMA pipe network model and performing inlet boundary processing; secondly, connecting the pipe network model with a GIS, a revenue system and an SCADA system; then, pre-processing data in an online mode; and finally, simulating in a real-time manner. The DMA real-time modeling method for the city water supply pipe network has following beneficial effects: a DMA real-time model can be set up completely; the model can fully mirror dynamic features of the water supply pipe network so that uncertainty of the model is reduced and simulation precision and dynamic tracking performance can be greatly improved; at the same time, the city water supply pipe network real-time model can be gradually set up with the method as a base and used for tracking abnormity and positioning.

Description

technical field [0001] The invention belongs to the field of urban water supply pipe network, and relates to real-time modeling of water supply pipe network DMA (District Metering Area, independent measurement area, DMA), specifically a monitoring control and data acquisition system based on water supply pipe network SCADA (Supervisory Control And Data Acquisition) , SCADA) real-time modeling method for online data. Background technique [0002] The water supply network is large in scale and complex in structure. There are many dynamic uncertainties in the pipe network system due to random changes in water consumption by users and manual scheduling. Not only that, the dynamic uncertainty of the pipe network is further enhanced due to the influence of natural pipe bursts, mechanical failures of water pumps, and water source pollution. Although the traditional pipeline network offline model can reflect the average working conditions of the pipeline network, it runs out of th...

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Problems solved by technology

In fact, the short-term water pressure fluctuations in the pipe network, valve state changes, pump start-stop, etc. have much greater impact on the operation fluctuations of the pipe network than the influence of node flow on the operation fluctuations of the pipe network. These dynamic parameters, the model does not have global real-time performance in essence, which directly leads to low model accuracy

[0003] There are no substantial real-time modeling application examples in China. Only the University of Cincinnati Water Supply Network Real-time Modeling Research Group has proposed the EPANET-RTX real-time modeling open source framework abroad. [1] , the framework has global real-time performance, but there are still the following problems: it is not connected to the GIS (Geographic Information System, GIS) and revenue system, and cannot reflect changes in the topology of the pipe network, users' daily water consumption and water consumption patterns; The estimation of node water demand is too smooth, which makes the model have a large fitting deviation; the valve status is not fed back, which cannot fit the reality

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