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Drinking Water Engineering and Science An interactive open-access journal

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doi:10.5194/dwes-2017-19
© Author(s) 2017. This work is distributed
under the Creative Commons Attribution 3.0 License.
Research article
23 Mar 2017
Review status
This discussion paper is under review for the journal Drinking Water Engineering and Science (DWES).
Modeling and Clustering Water Demand Patterns from Real-World Smart Meter Data
Nicolas Cheifetz1, Zineb Noumir2, Allou Samé2, Anne-Claire Sandraz1, Cédric Féliers1, and Véronique Heim3 1Veolia Eau d’Ile de France, Le Vermont, 28, Boulevard de Pesaro, Nanterre F-92751, France
2Université Paris-Est, IFSTTAR, COSYS, GRETTIA, Marne-la-Vallée F-77447, France
3Syndicat des Eaux d’Ile de France (SEDIF), 120 Boulevard Saint-Germain, Paris F-75006, France
Abstract. Nowadays, drinking water utilities need an acute comprehension of the water demand on their distribution network, in order to efficiently operate the optimization of resources, the management of billing and to propose new customer services. With the emergence of smart grids, based on Automated Meter Reading (AMR), a better understanding of the consumption modes is now accessible for smart cities with more granularities. In this context, this paper evaluates a novel methodology for identifying relevant usage profiles from the water consumption data produced by smart meters. The methodology is fully data-driven using the consumption time series which are seen as functions or curves observed with an hourly time step. First, a Fourier-based additive time series decomposition model is introduced to extract seasonal patterns from time series. These patterns are intended to represent the customer habits in terms of water consumption. Two functional clustering approaches are then used to classify the extracted seasonal patterns: the functional version of K-means, and the Fourier REgression Mixture (FReMix) model. The K-means approach produces a hard segmentation and K representative prototypes. On the other hand, the FReMix is a generative model and produces also K profiles as well as a soft segmentation based on the posterior probabilities. The proposed approach is applied to a smart grid deployed on the largest Water Distribution Network (WDN) in France. The two clustering strategies are evaluated and compared. Finally, a realistic interpretation of the consumption habits is given for each cluster. The extensive experiments and the qualitative interpretation of the resulting clusters allow to highlight the effectiveness of the proposed methodology.

Citation: Cheifetz, N., Noumir, Z., Samé, A., Sandraz, A.-C., Féliers, C., and Heim, V.: Modeling and Clustering Water Demand Patterns from Real-World Smart Meter Data, Drink. Water Eng. Sci. Discuss., doi:10.5194/dwes-2017-19, in review, 2017.
Nicolas Cheifetz et al.
Nicolas Cheifetz et al.
Nicolas Cheifetz et al.

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