Stability and Robustness of Real-Time Pressure Control in Water Distribution Systems
Publication: Journal of Hydraulic Engineering
Volume 146, Issue 4
Abstract
This paper deals with the fundamental requirement of stability of real-time control algorithms for water distribution systems. Loss of stability may in fact generate strong pressure waves that cause damages to the structure and increase leakage and maintenance costs. In addition, since the system under control is characterized by complex, nonlinear dynamic behavior, it is very important to guarantee that stability is preserved even when the water distribution system is working very far from its nominal working point. The aim of this work is therefore to apply tools and methodologies of control system theory to analyze both nominal and robust stability of real-time control algorithms in a case study framework. This allows quantitative understanding of the cause of possible instability of the control scheme and suggests how to prevent it. Finally, this work proposes a possible way to improve the design of the control algorithms under investigation, to reduce the risk of instability events, and, at the same time, reduce the cost of control.
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Data Availability Statement
All data, models, or code generated or used during the study are available from the corresponding author by request.
References
Campisano, A., E. Creaco, and C. Modica. 2010. “RTC of valves for leakage reduction in water supply networks.” J. Water Resour. Plann. Manage. 136 (1): 138–141. https://doi.org/10.1061/(ASCE)0733-9496(2010)136:1(138).
Campisano, A., C. Modica, S. Reitano, R. Ugarelli, and S. Bagherian. 2016. “Field-oriented methodology for real-time pressure control to reduce leakage in water distribution networks.” J. Water Resour. Plann. Manage. 142 (12): 04016057. https://doi.org/10.1061/(ASCE)WR.1943-5452.0000697.
Campisano, A., C. Modica, and L. Vetrano. 2012. “Calibration of proportional controllers for the RTC of pressures to reduce leakage in water distribution networks.” J. Water Resour. Plann. Manage. 138 (4): 377–384. https://doi.org/10.1061/(ASCE)WR.1943-5452.0000197.
Ciaponi, C., L. Franchioli, E. Murari, and S. Papiri. 2015. “Procedure for defining a pressure-outflow relationship regarding indoor demands in pressure-driven analysis of water distribution networks.” Water Resour. Manage. 29 (3): 817–832. https://doi.org/10.1007/s11269-014-0845-2.
Creaco, E. 2017. “Exploring numerically the benefits of water discharge prediction for the remote RTC of WDNs.” Water 9 (12): 961. https://doi.org/10.3390/w9120961.
Creaco, E., A. Campisano, M. Franchini, and C. Modica. 2017. “Unsteady flow modeling of pressure real-time control in water distribution networks.” J. Water Resour. Plann. Manage. 143 (9): 04017056. https://doi.org/10.1061/(ASCE)WR.1943-5452.0000821.
Creaco, E., A. Campisano, and C. Modica. 2018. “Testing behavior and effects of PRVs and RTC valves during hydrant activation scenarios.” Urban Water J. 15 (3): 218–226. https://doi.org/10.1080/1573062X.2018.1424214.
Creaco, E., and M. Franchini. 2013. “A new algorithm for real-time pressure control in water distribution networks.” Water Sci. Technol. Water Supply 13 (4): 875–882. https://doi.org/10.2166/ws.2013.074.
Farley, M., and S. Trow. 2003. Losses in water distribution networks. London: IWA publishing.
Fontana, N., M. Giugni, L. Glielmo, G. Marini, and F. Verrilli. 2018a. “Real-time control of a PRV in water distribution networks for pressure regulation: Theoretical framework and laboratory experiments.” J. Water Resour. Plann. Manage. 144 (1): 04017075. https://doi.org/10.1061/(ASCE)WR.1943-5452.0000855.
Fontana, N., M. Giugni, L. Glielmo, G. Marini, and R. Zollo. 2018b. “Real-time control of pressure for leakage reduction in water distribution network: Field experiments.” J. Water Resour. Plann. Manage. 144 (3): 04017096. https://doi.org/10.1061/(ASCE)WR.1943-5452.0000887.
Galuppini, G., E. Creaco, C. Toffanin, and L. Magni. 2019. “Service pressure regulation in water distribution networks.” Control Eng. Pract. 86 (May): 70–84. https://doi.org/10.1016/j.conengprac.2019.03.007.
Janus, T., and B. Ulanicki. 2017. “Hydraulic modelling for pressure reducing valve controller design addressing disturbance rejection and stability properties.” Procedia Eng. 186: 635–642. https://doi.org/10.1016/j.proeng.2017.03.280.
Janus, T., and B. Ulanicki. 2018. “Improving stability of electronically controlled pressure-reducing valves through gain compensation.” J. Hydr. Eng. 144 (8): 04018053. https://doi.org/10.1061/(ASCE)HY.1943-7900.0001498.
Lambert, A., M. Fantozzi, and J. Thornton. 2013. “Practical approaches to modeling leakage and pressure management in distribution systems—Progress since 2005.” In Proc., 12th Int. Conf. on Computing and Control for the Water Industry-CCWI2013. Perugia, Italy: Elsevier Procedia.
Ljung, L. 1991. System identification toolbox: For use with MATLAB: User’s guide. Natick, MA: Math Works.
Magni, L., and R. Scattolini. 2014. Advanced and multivariable control. Bologna, Italy: Pitagora.
Morari, M., and E. Zafiriou. 1989. Robust process control. Englewood Cliffs, NJ: Prentice-Hall International Editions.
Pezzinga, G. 2000. “Evaluation of unsteady flow resistances by quasi-2d or 1d models.” J. Hydr. Eng. 126 (10): 778–785. https://doi.org/10.1061/(ASCE)0733-9429(2000)126:10(778).
Prescott, S. L., and B. Ulanicki. 2008. “Improved control of pressure reducing valves in water distribution networks.” J. Hydr. Eng. 134 (1): 56–65. https://doi.org/10.1061/(ASCE)0733-9429(2008)134:1(56).
Seborg, D. E., D. A. Mellichamp, T. F. Edgar, and F. J. Doyle III. 2010. Process dynamics and control. New York: Wiley.
Streeter, V. L., E. B. Wylie, and K. W. Bedford. 1998. Fluid mechanics. Boston: WCB.
Thornton, J., and A. Lambert. 2006. “Managing pressures to reduce new breaks.” Water 21 (Dec): 24–26.
Ulanicki, B., and P. Skworcow. 2014. “Why PRVs tend to oscillate at low flows.” Procedia Eng. 89: 378–385. https://doi.org/10.1016/j.proeng.2014.11.202.
Walski, T. M., D. V. Chase, D. A. Savic, W. Grayman, S. Beckwith, and E. Koelle. 2003. Advanced water distribution modeling and management. Waterbury, CT: Haestead Press.
Zhou, K., J. C. Doyle, and K. Glover. 1986. Robust and optimal control. Upper Saddle River, NJ: Prentice-Hall.
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©2020 American Society of Civil Engineers.
History
Received: Feb 20, 2019
Accepted: Sep 19, 2019
Published online: Feb 13, 2020
Published in print: Apr 1, 2020
Discussion open until: Jul 13, 2020
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