Making a Smart Pressure Reducing Valve for Reducing Pressure Fluctuation Caused by Water Hammer in Water Distribution Network Using Input-Output Feedback Linearization

Document Type : Research Paper

Authors

1 MSc. Student of Water Resources Management, Dept. of Civil Engineering, Faculty of Engineering, University of Birjand, Birjand, Iran

2 Assist. Prof., Dept. of Civil Engineering, Faculty of Engineering, University of Birjand, Birjand, Iran

3 Assist. Prof., Dept. of Power Engineering, Faculty of Electrical Engineering and Computer, University of Birjand, Birjand, Iran

4 Postdoctoral., Dept. of Civil Engineering, Faculty of Engineering, University of British Columbia, Vancouver, Canada

Abstract

Using pressure reducing valves to reduce the pressure in water distribution systems to the minimum of required value is one of the most effective ways for leakage reduction. Valve opening/closing, switching a pump on/off and water consumption fluctuation by a large consumer cause transient flows. Interference between transient flow and a PRV with constant needle-valve setting may intensify pressure waves in WDS. Applying smart PRVs can limitpressure fluctuation. In this research, Input-output feedback linearization method has been used for smart PRV control. The results of this method have been compared with PRV with CNVS and proportional-integral-derivative controller. A theoretical network taken from references was used to evaluate the proposed methods. Network demands include normal consumers and an industrial large consumer. Water hammer caused by consumption variations, PRV with CNVS operation, IOFL method and PID controllers were modeled in Simulink. PRV outlet head fluctuation in PRV with CNVS is 18 to 28 m in PID controller and in IOFL method are 26 to 28 m. Also, the results showed that the IOFL method has smoother and less fluctuation than PID. Root-mean-square error for PRV outlet head in CNVS, PID controller and IOFL is 1.6, 0.32 and 0.28, respectively. Therefore, IOFL method has less error and better performance than PID. Also, this method has simpler computational operations by converting nonlinear system equations to linear equations.

Keywords

References

AbdelMeguid, H., Skworcow, P. & Ulanicki, B. 2011. Mathematical modelling of a hydraulic controller for PRV flow modulation. Journal of Hydroinformatics, 13(3), 374-389.
Fontana, N., Giugni, M., Glielmo, L., Marini, G. & Verrilli, F. 2018. Real-time control of a PRV in water distribution networks for pressure regulation: theoretical framework and laboratory experiments. Journal of Water Resources Planning and Management, 144(1), 04017075.
Giustolisi, O., Ugarelli, R. M., Berardi, L., Laucelli, D. B. & Simone, A. 2017. Strategies for the electric regulation of pressure control valves. Journal of Hydroinformatics, 19(5), 621-639.
Khalil, H. 2017. Nonlinear Systems. Prentice Hall Pub., NJ., USA.
Kodura, A. 2016. An analysis of the impact of valve closure time on the course of water hammer. Archives of Hydro-Engineering and Environmental Mechanics, 63(1), 35-45.
Li, P., Prempain, E., Postlethwaite, I. & Ulanicki, B. 2009. A New Control Scheme for Improving the Performance of Pressure Reducing Valves in Water Distribution Networks. IWA. UK.
Moosavian, N. & Lence, B. 2020. Unified matrix frameworks for water hammer analysis in pipe networks. International Journal of Civil Engineering, 18(12), 1327-1345.
Moslehi, I., Ghazizadeh, M. J. & Khoshghalb, E. Y. 2020. Economic analysis of pressure management in water distribution networks. Journal of Water and Wastewater, 31(2), 100-117. (In Persian)
Prescott, S. L. & Ulanicki, B. 2003. Dynamic modeling of pressure reducing valves. Journal of Hydraulic Engineering, 129(10), 804-812.
Prescott, S. L. & Ulanicki, B. 2008. Improved control of pressure reducing valves in water distribution networks. Journal of Hydraulic Engineering, 134(1), 56-65.
Soltani Asl, M. & Faghfour Maghrebi, M. 2008. Intelligent pressure management to reduce leakage in urban water supply networks: a case study of Sarafrazan district, Mashhad. Water and Wastewater, 20(3), 99-104. (In Persian)
Torshizi, M., Nasirian, A. & Eliasi, H. 2021. An overview on advanced control of pressure reducing valves in water network. The 5th National Congress on Iranian Irrigation and Drainage. Birjand, Iran. (In Persian)
Trow, S. W. 2011. Intelligent Pressure Management for Monitoring and Control of Water Distribution Systems in the UK. In: Sewilam, H. Capacity Development for Drinking Water Loss Reduction: Challenges and Experiences. Dreesbach Verlag Pub. Münichen, Germany. 81-91.
Journal of Water and Wastewater; Ab va Fazilab ( in persian )
Volume 33, Issue 3 - Serial Number 140
September and October 2022
Pages 126-138

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