A methodological approach to the design of optimising control strategies for sewer systems

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Abstract

This study focuses on designing an optimisation based control for sewer system in a methodological way and linking itto a regulatory control. Optimisation based design is found to depend on proper choice of a model, formulation of objective function and tuning of optimisation parameters. Accordingly, two novel optimisation configurations are developed, where the optimisation either acts on the actuators or acts on the regulatory control layer. These two optimisation designs are evaluated on a sub-catchment of the sewer system in Copenhagen, and found to perform better than the existing control; a rule based expert system. On the other hand, compared with a regulatory control technique designed earlier in Mollerup et al. (2015), the optimisation showed similar performance with respect to minimising overflow volume. Hence for operation of small sewer systems, regulatory control strategies can offer promising potential and should be considered along more advanced strategies when identifying novel solutions.
Original languageEnglish
JournalEnvironmental Modelling & Software
Volume83
Pages (from-to)103-115
ISSN1364-8152
DOIs
Publication statusPublished - 2016

Keywords

  • Sewer system control
  • Methodology
  • Optimisation
  • Regulatory control
  • Benchmarking
  • Control hierarchy

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