ID:
publications-4002
Type:
article
Year:
2012
Authors:
Liu, Li and Liu, Li and Zechman, Emily M. and Zechman, Emily M. and Mahinthakumar, G. and Mahinthakumar, Gnanamanikam and Ranjithan, S. Ranji and Ranjithan, S. Ranji
Title:
Identifying contaminant sources for water distribution systems using a hybrid method
Venue/Journal:
Civil Engineering and Environmental Systems
DOI:
10.1080/10286608.2012.663360
Research type:
Water System:
Technical Focus:
Abstract:
The rapid discovery of the contaminant source in a water distribution system (WDS) is vital for generating an efficient control strategy during a contamination event. An inverse problem can be constructed, given sensor measurements in a WDS, to identify the contaminant source characteristics by integrating a WDS simulation model with an optimisation method. However, this approach requires numerous compute-intensive simulation runs to evaluate potential solutions. This paper reports the findings of an investigation by introducing a hybrid method for the real-time characterisation of a contaminant source. This new method integrates a simulation-optimisation approach with a logistic regression and a local improvement method to expedite the convergence and possibly solve the problem quickly. The results of numerical experiments on two example WDS networks demonstrate the efficiency of the proposed hybrid method for contaminant source characterisation. Effects of various hybrid strategies on the algorithm perf...
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