Real-time Control of Combined Water Quantity & Quality in Open Channels

• DOI: 10.4233/uuid:e25c3b8f-29ba-4af6-9ab6-514526410ed9
• Publication Date: 2013-01-09
• Authors: Min Xu
• Keywords: Water security; Flood control; Water use

Fresh water supply and flood protection are two central issues in management. Society needs more fresh a safe system to guarantee better life. A severe climate will result droughts extreme storms. As consequence, salt intrusion increase. Therefore, clean is becoming scarce. Potentially, there lies conflict between people's demands what nature can provide. In practice, systems complex. Both quantity quality criteria must be served. Moreover, normally used as multi-functional resource. For example, reservoir for irrigation, power generation, reclamation. These objectives usually most of the time it not easy people cope with these contradictions. Smart regulation essential only from world-wide issue perspective, but also specific problem aspect. Real-time control powerful tool help accurate systems. extensively studied, fully integrated has hardly been touched. order deal multi-objectives system, advanced techniques, such model predictive (MPC), often required which require extensive computational resources. This brings forward research questions: 1: What possibility controlling both system? 2: MPC, reduce burden make implementation possible? this PhD thesis, case polder flushing real-time selected first question, includes problems.The task flush polluted out while keeping levels close setpoints. Instead manual operation applied were designed feedback MPC. different types internal models ranging linear hydrodynamic models. The performance controllers compared. We conclude that possible maintain at same one dimensional model. Furthermore, MPC performs much than classic when operational limits very strict. using performance, affecting effectiveness computation time. Being an technique, playing important role main barrier implementation. we propose procedure reduction Proper Orthogonal Decomposition (POD), speed up computation. POD able states disturbances, matrix test case, concluded reduced good trade-off proposed considered successful method