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Results 1-6 of 6 (Search time: 0.097 seconds).
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  • Derivation of optimal joint operating rules for multi-purpose multi-reservoir water-supply by systems

    • Authors: Khu, Soon-Thiam;  Advisor: -;  Participants: Wang, Xu; Tan, Qiaofeng (2017)

  • The water-supply system of Li River in Guangxi Province, China, was selected for the case study. The results show that the operating policy proposed in this study is better than conventional operating rules and aggregated standard operating policy (SOP) for both water supply and hydropower generation due to the use of hedging mechanisms and effective coordination among multiple objectives.
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  • Reservoir operation rules for controlling algal blooms in a tributary to the impoundment of Three Gorges Dam

    • Authors: Lian, Jijian;  Advisor: -;  Participants: Ma, Chao; Yao, Ye (2017)

  • Since the first impoundment of Three Gorges Dam in 2003, algal blooms occur frequently in the near-dam tributaries. An attempt is made in our study to develop reservoir operation rules that would reduce the level of algal blooms in the near-dam tributaries. The reservoir operations can further increase the water exchange between the mainstream of the Three Gorges Reservoir and the Xiangxi River tributary and thus move a larger amount of algae into the deep water where it would die. Analysis of the model results indicated that water is charge fluctuations consisting of a lower night-time valley-load flow and a larger flow component to satisfy daytime peak load during short-term operations (within a day), the rise in water level during the medium-term operation (e.g., over weeks), an...
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  • Real-time optimisation of large river and reservoir system operations

    • Authors: Madsen, Henrik;  Advisor: -;  Participants: Falk, Anne Katrine (2017)

  • We present a new approach for real-time optimisation of large river and reservoir systems that combines physically-based hydrological-hydrodynamic models with surrogate control models within a Model Predictive Control framework. The approach is demonstrated in the optimisation of storage operations of the Murrumbidgee River system in New South Wales, Australia. This system consists of multiple reservoirs with pronounced travel times between the reservoirs. The test shows a large potential for improving operational efficiency of large water systems.
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  • Comprehensive operation of the eco-hydrological processes in shallow macrophytic lakes

    • Authors: Yang, Zhifeng;  Advisor: -;  Participants: Yi, Yujun; Wang, Xuan; Yin, Xinan (2017)

  • Changes in natural hydrologic regime due to intensive human activities and climatic changes are largely responsible for the ecological degradation of shallow macrophytic lakes, and thus ecological water should be supplemented in order to prevent the drying up of the lake. In this study, we investigated ecological water supplement in Baiyang Lake, a typical shallow macrophytic lake in northern China. It is recommended that water should be supplemented simultaneously through the northern and southern routes to increase the hydraulic disturbance in the central lake area and the water quality near the entrance.
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  • Comprehensive operation of reservoirs and sluice-pump groups in the pearl river basin

    • Authors: Ma, Zhipeng;  Advisor: -;  Participants: Wang, Sen; Wan, Donghui; Zhang, Kang; Zou, Huazhi (2017)

  • In order to prevent flood and drought disasters, cascade reservoirs and embankments have been constructed in the main river, and numerous sluices and pumps have also been installed in the delta of the Pearl River. These manmade projects have caused substantial changes in the hydraulic regime in the Pearl River basin. We propose a 1D/2D coupled flood model to precisely characterize flood flows accounting for how the water flows out of and then returns to the main channel.
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  • MSWRMS-Lab: A tool of water resources management in China

    • Authors: Wang, Zongzhi;  Advisor: -;  Participants: Cheng, Liang; Liu, Kelin; Hu, Xia (2017)

  • MSWRMS is a new approach in Chinese water resources management. Issues including the dynamic change and interannual variability of management indicators with socioeconomic development and water resource, the feedback between indicators, setting dynamic annual management target, changing water use behavior and adjusting industrial structure to fulfil control target must be addressed in the MSWRMS implementation. The Most Stringent Water Resources Management System Lab (for short MSWRMS-Lab) is an effective tool that supports addressing the above issues.
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