Journal
ENVIRONMENTAL MODELLING & SOFTWARE
Volume 80, Issue -, Pages 33-40Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.envsoft.2016.02.019
Keywords
Water demand; Demand pulses; Intensity; Duration; Correlation; Parameterization
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Funding
- iWIDGET project [318272]
- European Commission within the 7th Framework Programme
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This paper proposes a method for parameterizing the Poisson models for residential water demand pulse generation, which consider the dependence of pulse duration and intensity. The method can be applied to consumption data collected in households through smart metering technologies. It is based on numerically searching for the model parameter values associated with pulse frequencies, durations and intensities, which lead to preservation of the mean demand volume and of the cumulative trend of demand volumes, at various time aggregation scales at the same time. The method is applied to various case studies, by using two time aggregation scales for demand volumes, i.e. fine aggregation scale (1 min or 15 min) and coarse aggregation scale (1 day). The fine scale coincides with the time resolution for reading acquisition through smart metering whereas the coarse scale is obtained by aggregating the consumption values recorded at the fine scale. Results show that the parameterization method presented makes the Poisson model effective at reproducing the measured demand volumes aggregated at both time scales. Consistency of the pulses improves as the fine scale resolution increases. (C) 2016 Elsevier Ltd. All rights reserved.
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