On-line parameter updating as an optimisation tool for Decision Support Systems

Decision Support Systems (DSSs) that are used nowadays by water managers often predict states that do not correspond with the observed states. This is caused by changing parameters in the real systems, while the parameters used in the current DSSs are kept at a fixed level or follow a temporal pattern that does not always represents reality....

Model Predictive Control applied to the Dutch delta, a probabilistic safety analysis

As many areas in The Netherlands are located below or slightly above mean sea level, or adjacent to large rivers, a lot of effort is put into ensuring the Dutch keep dry feet. The prevention of flooding is the most important and internationally well-known layer in the Dutch water safety policy. Nowadays this takes place by means of taking...

Load interdependencies of flood defences

In the Netherlands flood risks are often assessed by using a dike ring approach. This approach has, aside from many advantages, also some disadvantages. The main disadvantage is that, when zooming in on a small area, the effect of the system on that small area and vice versa, is or cannot be accounted for properly. Research has shown that for a...

Gradient-based hybrid Model Predictive Control using Time Instant Optimization for Dutch regional water systems

This thesis focusses on Dutch regional water systems. These systems are often low-lying polder-belt canal systems, where many pumps are needed to meet different requirements regarding water quantity and quality. The control of a complex water system, consisting of continuous dynamics (evolution of water flow and levels) and discrete elements (e...

Risk-based control of external salt water intrusion for the Rhine-Meuse Estuary

The fresh water supply will be more under pressure, due to the predicted effects of climate change in the Netherlands. More frequent salt water intrusion during the summer semester is caused by the joint occurrence of low river discharges and the expected sea level rise. The control of external salinity is necessary to guarantee a sufficient...

Beheersen van extreme waterstanden in het IJsselmeer, een nieuw perspectief voor een veilig en klimaatbestendig IJsselmeergebied

In 2008 kwam de tweede Deltacommissie met het voorstel om het waterpeil van het IJsselmeer in de toekomst met 1,5 m te verhogen. Door de verwachte zeespiegelstijging zal het namelijk steeds moeilijker worden om het overtollige water van het IJsselmeer af te voeren naar zee. Om dit onder vrij verval te kunnen blijven doen is een peilopzet...

Application of Feed Forward Controller on Delta-Mendota Canal

The presence of water makes life possible on this planet. Our existence and our economical activities are very dependent on this resource. Proper management of the available water is therefore essential. This research is part of the operational level of quantitative water management, which concerns the daily operation of the water system...