Installing Fixed Sensors for Double Calibration and Early-warning Detection Purposes

Abstract Water utilities have started to install water quality sensors to protect their network against intentional and accidental contamination events. In this context, for taking appropriate action, not only are early-warning detection systems important, but so is the identification of the contamination source, and knowledge of the present and future contamination extent. For the latter there is a need for reliable and updated network models. The main objective of this paper is to specify which performance criteria should be considered to place water quality and water quantity sensors for both early detection and model calibration. Firstly, a brief bibliographical review is given for optimal sensor location design. Next, formulations and objectives for early-warning detection are proposed. Problem formulations that aim to minimize the estimator variance for calibration are then specified. Finally, the method is applied on the real WDN system of the CUS water service (1,000 km, 25,000 nodes and 45,000 customers).

[1]  Werner. De Schaetzen.  Optimal calibration and sampling design for hydraulic network models. , 2000 .

[2]  James G. Uber,et al.  A Sensor Location Model to Detect Contaminations in Water Distribution Networks , 2005 .

[3]  James G. Uber,et al.  Sampling Design Methods for Water Distribution Model Calibration , 1998 .

[4]  Andrzej Bargiela,et al.  Pressure and Flow Uncertainty in Water Systems , 1989 .

[5]  Avi Ostfeld,et al.  Detecting Accidental Contaminations in Municipal Water Networks , 1998 .

[6]  Jochen Deuerlein,et al.  Graph decomposition in risk analysis and sensor placement for water distribution network security , 2011 .

[7]  Avi Ostfeld,et al.  Optimal Layout of Early Warning Detection Stations for Water Distribution Systems Security , 2004 .

[8]  W. Marsden.  I and J , 2012 .

[9]  Zoran Kapelan,et al.  Calibration of Water Distribution System Hydraulic Models , 2010 .

[10]  Nicolas Cheifetz,et al.  An Incremental Sensor Placement Optimization in a Large Real-World Water System , 2015 .

[11]  Jochen Deuerlein,et al.  Alternative Approaches for Solving the Sensor Placement Problem in Large Networks , 2011 .

[12]  Kevin E Lansey,et al.  Optimal Meter Placement for Water Distribution System State Estimation , 2010 .

[13]  G. G. Stokes.  "J." , 1890, The New Yale Book of Quotations.

[14]  E. Kay,et al.  Graph Theory. An Algorithmic Approach , 1975 .

[15]  Avi Ostfeld,et al.  The Battle of the Water Sensor Networks (BWSN): A Design Challenge for Engineers and Algorithms , 2008 .

[16]  Bryan W. Karney,et al.  EFFECT OF TIME STEP AND DATA AGGREGATION ON CROSS CORRELATION OF RESIDENTIAL DEMANDS , 2008 .

[17]  James G. Uber,et al.  Greedy Heuristic Methods for Locating Water Quality Sensors in Distribution Systems , 2004 .

[18]  Kevin E Lansey,et al.  Determining Pipe Groupings for Water Distribution Networks , 2002 .

[19]  R. A. Deininger,et al.  Optimal Locations of Monitoring Stations in Water Distribution System , 1992 .

[20]  Olivier Piller,et al.  Battle of the Water Sensor Networks , 2008 .

[21]  P. Cheung,et al.  OPTIMAL LOCATION OF WATER QUALITY SENSORS IN SUPPLY SYSTEMS BY MULTIOBJECTIVE GENETIC ALGORITHMS , 2005 .

[22]  Cynthia A. Phillips,et al.  Sensor Placement in Municipal Water Networks with Temporal Integer Programming Models , 2006 .