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- W24468596 abstract "Regarding canal management modernization, water savings and water delivery quality, the studypresents two automatic canal control approaches of the PI (Proportional and Integral) type: thedistant and the local downstream control modes. The two PI controllers are defined, tuned andtested using a hydraulic unsteady flow simulation model, particularly suitable for canal controlstudies. The PI control parameters are tuned using optimization tools. The simulations are donefor a Portuguese prototype canal and the PI controllers are analyzed and compared considering ademand-oriented-canal operation.The paper presents and analyzes the two control modes answers for five different offtake types –gate controlled weir, gate controlled orifice, weir with or without adjustable height and automaticflow adjustable offtake. The simulation results are compared using water volumes performanceindicators (considering the demanded, supplied and the effective water volumes) and a timeindicator, defined taking into account the time during which the demand discharges are effectivedischarges.Regarding water savings, the simulation results for the five offtake types prove that the localdownstream control gives the best results (no water operational losses) and that the distantdownstream control presents worse results in connection with the automatic flow adjustableofftakes.Considering the water volumes and time performance indicators, the best results are obtained forthe automatic flow adjustable offtakes and the worst for the gate controlled orifices, followed bythe weir with adjustable height." @default.
- W24468596 created "2016-06-24" @default.
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- W24468596 date "2005-03-01" @default.
- W24468596 modified "2023-09-26" @default.
- W24468596 title "Hydraulic Performance of a Downstream Controlled Irrigation Canal Equipped with Different Offtake Types" @default.
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