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| Titel |
A water management decision support system contributing to sustainability |
| VerfasserIn |
Klaudia Horváth, Bart van Esch, Jorn Baayen, Ivo Pothof, Jan Talsma, Klaas-Jan van Heeringen |
| Konferenz |
EGU General Assembly 2017
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| Medientyp |
Artikel
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| Sprache |
en
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 19 (2017) |
| Datensatznummer |
250154444
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| Publikation (Nr.) |
 EGU/EGU2017-19541.pdf |
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| Zusammenfassung |
| Deltares and Eindhoven University of Technology are developing a new decision support
system (DSS) for regional water authorities. In order to maintain water levels in the Dutch
polder system, water should be drained and pumped out from the polders to the sea.
The time and amount of pumping depends on the current sea level, the water level
in the polder, the weather forecast and the electricity price forecast and possibly
local renewable power production. This is a multivariable optimisation problem,
where the goal is to keep the water level in the polder within certain bounds. By
optimizing the operation of the pumps the energy usage and costs can be reduced, hence
the operation of the regional water authorities can be more sustainable, while also
anticipating on increasing share of renewables in the energy mix in a cost-effective
way.
The decision support system, based on Delft-FEWS as operational data-integration
platform, is running an optimization model built in RTC-Tools 2, which is performing
real-time optimization in order to calculate the pumping strategy. It is taking into
account the present and future circumstances. As being the core of the real time
decision support system, RTC-Tools 2 fulfils the key requirements to a DSS: it is fast,
robust and always finds the optimal solution. These properties are associated with
convex optimization. In such problems the global optimum can always be found.
The challenge in the development is to maintain the convex formulation of all the
non-linear components in the system, i.e. open channels, hydraulic structures, and
pumps.
The system is introduced through 4 pilot projects, one of which is a pilot of the Dutch
Water Authority Rivierenland. This is a typical Dutch polder system: several polders are
drained to the main water system, the Linge. The water from the Linge can be released to the
main rivers that are subject to tidal fluctuations. In case of low tide, water can be released via
the gates. In case of high tide, water should be pumped. The goal of the pilot is to make the
operation of the regional water authority more sustainable and cost-efficient. Sustainability
can be achieved by minimizing the CO2 production trough minimizing the energy used for
pumping.
This work is showing the functionalities of the new decision support system, using
RTC-Tools 2, through the example of a pilot project. |
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