Online Hydraulic State Prediction for Water Distribution Systems
Publication: World Environmental and Water Resources Congress 2009: Great Rivers
Abstract
This paper describes and demonstrates a method for on-line hydraulic state prediction in urban water networks. The proposed method uses a Predictor-Corrector (PC) approach in which a statistical data-driven algorithm is applied to estimate future water demands, while near real-time field measurements are used to correct (i.e., calibrate) these predicted values on-line. The calibration problem is solved using a modified Least Squares (LS) fit method. The objective function is the minimization of the least-squares of the differences between predicted and measured hydraulic parameters (i.e., pressure and flow rates at several system locations), with the decision variables being the consumers' water demands. The a-priori estimation (i.e., prediction) of the values of the decision variables, which improves through experience, facilitates a better convergence of the calibration model and provides adequate information on the system's hydraulic state for real time optimization. The proposed methodology is demonstrated on a prototypical municipal water distribution system.
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Copyright
© 2009 American Society of Civil Engineers.
History
Published online: Apr 26, 2012
ASCE Technical Topics:
- Analysis (by type)
- Calibration
- Computer networks
- Computing in civil engineering
- Engineering fundamentals
- Flow measurement
- Hydraulic engineering
- Hydraulic models
- Hydraulic networks
- Hydraulic structures
- Internet
- Least squares method
- Measurement (by type)
- Models (by type)
- Municipal water
- Regression analysis
- Statistical analysis (by type)
- Water (by type)
- Water and water resources
- Water management
- Water supply
- Water supply systems
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