Pressure Control in District Metering Areas with Boundary and Internal Pressure Reducing Valves
Publication: Water Distribution Systems Analysis 2008
Abstract
Despite operational improvements over the last 10–15 years, water utilities still are losing a significant amount of potable water from their networks through leakage. The leakage is managed on the one hand by reactive and proactive maintenance and on the other hand by pressure control to reduce background leakage from connection and joints. This paper is based on experience from the Process Control — Water Software Systems group which was involved in many pressure control projects and the current Neptune project (www.neptune.ac.uk). A fast and efficient method to calculate time schedules and flow modulation curves is presented. Both time and flow modulation can be applied to a single inlet DMA. Time modulation can be applied to a multi-inlet district metering area (DMA) but this is not always possible for flow modulation due to the risk of hunting. It is convenient to distinguish between boundary and internal pressure reducing valves (PRVs), the decision variable for a boundary valve is a PRV set-point whereas for the internal valves it is a valve resistance. The resistance is then automatically translated into a set-point for field implementation.
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Copyright
© 2008 American Society of Civil Engineers.
History
Published online: Apr 26, 2012
ASCE Technical Topics:
- Construction engineering
- Construction management
- Continuum mechanics
- Design (by type)
- Domain boundary
- Dynamics (solid mechanics)
- Engineering fundamentals
- Engineering mechanics
- Equipment and machinery
- Flow (fluid dynamics)
- Flow duration
- Fluid dynamics
- Fluid mechanics
- Hydrologic engineering
- Load and resistance factor design
- Load factors
- Mathematics
- Pressure (type)
- Project management
- Solid mechanics
- Structural design
- Valves
- Water and water resources
- Water leakage and water loss
- Water management
- Water meters
- Water pressure
- Water supply
- Water supply systems
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