Regulatory control analysis and design for sewer systems

Ane Loft Mollerup, Peter Steen Mikkelsen, Dines Thornberg, Gürkan Sin

Research output: Contribution to journalJournal articleResearchpeer-review


A systematic methodology for regulatory control analysis and design is adapted for sewer system operation and evaluated. The main challenge with adapting the methodology is the handling of the stochastic and transient nature of the rainfall disturbances, inherent to sewer system operation. To this end, four distinct modes of operation are identified (dry weather, filling, saturation and emptying) and for each of these the process gain matrix is found. Based on the gain matrices a controllability analysis is performed, to screen for suitable pairings between measurements and actuators in the case study area of Copenhagen. The analysis effectively reduces the number of potential controlled variables, by considering the sensitivity of the measurements towards changes in the manipulated variables. Several potential pairings are generated and the best alternative is chosen for closed-loop testing. The methodology is a promising tool for systematic generation of solutions for sewer system control.
Original languageEnglish
JournalEnvironmental Modelling & Software
Pages (from-to)153-166
Publication statusPublished - 2015


  • Sewer system control
  • Regulatory control
  • Controllability analysis
  • Pairing


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