Dynamic Modeling of Pressure Reducing Valves

Prescott, Simon L.; Ulanicki, Bogumił

doi:10.1061/(asce)0733-9429(2003)129:10(804)

Cited by 60 publications

(42 citation statements)

References 7 publications

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“…Prescott and Ulanicki (2003) used this type of valve to develop their dynamic model of PRVs. According to this model, this type of PRV is somewhat flow dependent: during low flows the outlet pressure is slightly higher than during high flows.…”

Section: Static and Flow Modulated Prvs Versus The Dpcmmentioning

confidence: 99%

Advanced control of a water supply system: a case study

Bakker

Rajewicz²,

Kien

et al. 2014

Water Practice and Technology

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Conventional automatic production flow control and pump pressure control of water supply systems are robust and simple: production flow is controlled based on the level in the clear water reservoir and pump pressure is controlled on a static set-point. Recently, more advanced computerbased control methods were developed in which production flow is controlled by using a shortterm water demand forecasting model and pressure is controlled by a dynamic pressure control module. To assess the differences between conventional and advanced control, we examined operational data of water treatment plant (WTP) Gruszczyn that supplies drinking water to a part of the city of Poznań, Poland. We compared two periods of three weeks of conventional and advanced control. The comparison showed that with advanced control the variation in the production flow was 83% lower, and the pump pressure of the clear water pumps was 29% lower.The lower pressure resulted in 20% less background leakage and the overall system's energy costs were 11.5% lower.

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Section: Static and Flow Modulated Prvs Versus The Dpcmmentioning

confidence: 99%

Advanced control of a water supply system: a case study

Bakker

Rajewicz²,

Kien

et al. 2014

Water Practice and Technology

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“…In the current study, the developed model does not include the effect of pressure waves (water hammer) in the pipes of the system. The phenomenological model developed by (Prescott & Ulanicki 2003) is used to model the behaviour of a standard PRV, while the mathematical model of the controller is developed here.…”

Section: Mathematical Model Descriptionmentioning

confidence: 99%

“…Equation (9) describes the relation between opening turns n of the needle valve, and the valve discharge capacitance in m 2.5 /s, Cv nv , which is taken from (Prescott & Ulanicki 2003).…”

Section: Mathematical Model Descriptionmentioning

confidence: 99%

Mathematical modelling of a hydraulic controller for PRV flow modulation

AbdelMeguid

Skworcow

Ulanicki

2011

Journal of Hydroinformatics

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“…This paper is based on the experience of the Process Control -Water Software Systems group which was involved in many pressure control projects and the current Neptune project (www.neptune.ac.uk). During implementation of a pressure control scheme both steady state and dynamic aspects should be considered (Brunone and Morelli, 1999;Ulanicki et al, 2000;Prescott and Ulanicki, 2003; and there are work packages in the project to investigate these aspects. Furthermore, in the Neptune project the pressure management is considered jointly with energy management because both problems are interlinked.…”

Section: Introductionmentioning

confidence: 99%