Through the hydraulic model method, based on the measured values ​​​​of a small number of monitoring points, the pressure and flow values ​​​​across the entire network are simulated in real time, and the actual measured values ​​​​and simulated values ​​are compared to assist in the determination of pipe network abnormalities.

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The picture above shows the comparison between the measured data and the simulated data at the intermediate station during the project's pressure regulation process. The model is a pipeline model, and the input values ​​are the real-time flow rates at the upstream outbound and downstream inbound stations. The simulation output at this point is pressure data, and its Nash coefficient reaches 0.9948, indicating a good model match.

1、Refined simulation technology of "water hammer" in pressurized long-distance pipelines

An accurate numerical model of all hydraulic factors and Godunov solution format for multiple types of water hammer problems are proposed, breaking through the shortcomings of the traditional water hammer characteristic line method. Overcome the problem of low simulation accuracy of pressure distortion and peak attenuation in complex pipelines.

2、Simulation and control technology for gas stagnation transient characteristics of pressurized long-distance pipelines

The water-gas coupling mechanism characteristics, simulation methods, pipe burst risks and control technologies are proposed. Accurately simulate abnormal pressure fluctuations caused by water-gas coupling and quantify the risk of pipe bursting.

3、Pipe network water quality model analysis

We constructed the simulation of forward and reverse problems of pollutant transport based on physical neural network (PINN), the analysis of forward and reverse problems of multi-reactants, and the identification of multi-reactant parameters with variable coefficients in space and time.