Energy Optimisation of Water Distribution Networks: Using a distributed pumping solution for optimal pressure control
Authors
Pétursson, Bjarni Geir ; Mølgaard, Mathias
Term
4. term
Education
Publication year
2015
Submitted on
2015-06-03
Pages
131
Abstract
Dette projekt udvikler en effekt-optimal styringsstrategi for et vanddistributionsnet. I stedet for at bruge trykreducerende ventiler til at regulere trykket, foreslås det at anvende pumper på tværs af nettet. Ved at have flere pumper end strengt nødvendigt (et overaktueret system) opnås ekstra frihedsgrader i styringen, som kan bruges til at reducere energiforbruget. Styringen finder den bedste fordeling af trykbidrag fra pumperne ved hjælp af gradientnedstigning (en optimeringsmetode), samtidig med at de krævede udgangstryk opretholdes. Desuden kræver den kun kendskab til netværkets topologi beskrevet som en graf og er designet til at bruge minimal kommunikation mellem de enkelte pumper. Resultaterne viser, at når systemtrykket har nået stationær tilstand, reducerer styringen gradvist netværkets effektforbrug og opfylder dermed de opstillede kriterier.
This project develops a power-optimal control strategy for a water distribution network. Instead of using pressure-reducing valves to limit pressure, it proposes regulating pressure with pumps distributed across the network. Having more pumps than strictly necessary (an over-actuated system) provides extra control freedom that can be used to lower energy use. The controller assigns each pump’s pressure boost using gradient descent (an optimization method) while maintaining the required outlet pressures. It only needs the network topology described as a graph and is designed to operate with minimal communication between individual pumps. The results show that once the system pressure reaches steady state, the controller gradually reduces the network’s power consumption, meeting its design criteria.
[This abstract was generated with the help of AI]
Keywords
Vand ; Optimal ; Regulering ; Pumper ; Energi
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