Eco-friendly Reservoir Operation Model With Applications

Reservoir operation is a main event for the whole basin ecosystem, especially the downstream ecosystem. In the past, the major consideration of a reservoir operation is the coordination of the contradiction between harms and benefites. People pay more attention to making use of the reservoir in flood control, power generation, water supply, irrigation, shipping, and so consider less of the ecological and environmental protection for the lower reaches. With the social progress and water using ideas changing, people shuold put the river ecological environment protecting and improving on an important position, and actively explore the new integrated water scheduling technology to promote the harmony between human and water, for achieving the aim of sustainable development.Firstly, this paper summarizes the current study on the reservoir operation scheduling optimization techniques and the ecological friendly reservoir operation, expounds the reservoir operation problems in our country, and proposes the reach ideas and contents. Secondly, through four ways, this paper discusses the the water conservancy project effects on the river ecosystems. Thirdly, this paper research on the content,tasks and criteria of the eco-friendly reservoir operation. For the eco-friendly reservoir operation, we use the water indicators quantifying the ecological benefits of reservoir operation for the first time. Through the establishment of the multi-objective model for Yanshan Reservoir, we adopt the multiple targets coupling and the weight coefficient method to solve the multi-objective problem, During the program evaluation, we introduct a Range of Variability Approach (RVA) method, which makes the hydrological changes as a quantitative assessment factor to evaluate the impacts of the dam operation. Fourthly, we use a variety of methods to calculate and analyze the downstream ecological water demand for the Yanshan Reservoir, and make nine eco-flow programs in the reasonal ecological water demand extent. Fifthly, taking the Yanshan Reservoir as an example, the eco-friendly reservoir operation model has been established. Through the inverse dynamic programming recursive algorithm, we deal with the nine programs, and get the water discharge process, and with the evaluation of the nine programs effectiveness, we ultimately get a optimal program. And then taking the optimal scheduling results of a long series of the best Yanshan Reservoir program for the samples, we extract the optimal scheduling functions by the Artificial Neural Network (ANN) back propagation (BP) model to guide the practical work. Finally, we summarize the full text of the research results, and give the focus of the next study step.