ID:
publications-4407
Type:
article
Year:
2008
Authors:
Giustolisi, Orazio and Giustolisi, Orazio and Kapelan, Zoran and Kapelan, Zoran and Savić, Dragan and Savic, Dragan
Title:
Extended Period Simulation Analysis Considering Valve Shutdowns
Venue/Journal:
Journal of Water Resources Planning and Management
DOI:
10.1061/(asce)0733-9496(2008)134:6(527)
Research type:
Water System:
Technical Focus:
Abstract:
Planned (e.g., regular maintenance) and unplanned (e.g. pipe burst) interruptions occur regularly in water distribution systems leading to their reduced performance. This paper presents an extended period simulation model capable of assessing system’s performance under these conditions. The extended period simulation model is based on the recently developed steady-state pressure driven hydraulic model and is capable of calculating pressures, flows, and hence actual water demands delivered under modified network topology conditions (caused by the use of isolation valves). The model is accompanied by several reliability indicators which can be used to assess system’s performance under interruptions. The above-mentioned methodology is demonstrated on a real-life case study in Italy. The role of isolation valve design and uncertainty in valve operability is analyzed and discussed. The case study results obtained demonstrate that the least cost design/rehabilitation of water distribution systems is likely to r...
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