Development of an integrated modeling system for improved multi-objective reservoir operation

Abstract

Reservoir is an efficient way for flood control and improving all sectors related to water resources in the integrated water resources management. Moreover, multiobjective reservoir plays a significant role in the development of a country's economy especially in developing countries. All multi-objective reservoirs have conflicts and disputes in flood control and water use, which makes the operator a great challenge in the decision of reservoir operation. For improved multi-objective reservoir operation, an integrated modeling system has been developed by incorporating a global optimization system (SCE-UA) into a distributed biosphere hydrological model (WEB-DHM) coupled with the reservoir routing module. The new integrated modeling system has been tested in the Da River subbasin of the Red River and showed the capability of reproducing observed reservoir inflows and optimizing the multi-objective reservoir operation. First, the WEB-DHM was calibrated for the inflows to the Hoa Binh Reservoir in the Da River. Second, the WEB-DHM coupled with the reservoir routing module was tested by simulating the reservoir water level, when using the observed dam outflows as the reservoir release. Third, the new integrated modeling system was evaluated by optimizing the operation rule of the Hoa Binh Reservoir from 1 June to 28 July 2006, which covered the annual largest flood peak. By using the optimal rule for the reservoir operation, the annual largest flood peak at downstream control point (Ben Ngoc station) was successfully reduced (by about 2.4 m for water level and 2500 m 3 $s -1 for discharge); while after the simulation periods, the reservoir water level was increased by about 20 m that could supply future water use.

A Parametric Flood Control Method for Dams with Gate-Controlled Spillways

“…The VEM progressively manages the available S , increasing the outflows as the S decreases. Given the reservoir inflow at time i (I ), and by assuming a constant inflow in the future, the number of intervals left (n) until the reservoir runs out of S are given by Equation (2):…”

“…Flood management aims to guarantee dam safety, minimize downstream floods, and maintain the full operational capacity of reservoirs once a flood is over [1][2][3][4][5]. Dams with gated spillways represent around 30% of large dams around the world [6], and provide more possibilities for water conservation and flood abatement than those with fixed-crested spillways [7].…”

Evaluation of Non Damaging Flow for a Set of Upstream Sub Basins in a River System

“…Optimization techniques are generally used for planning, designing and assessing effectiveness of a flood control measure. Traditional and nontraditional optimization models such as Linear Programming, Non Linear Programming, Genetic algorithms, Fuzzy logic and Neural Networks models have been extensively used in planning and evaluating efficiency of flood control systems (Wasimi and Kitanidis, 1983;Unver and Mays, 1990;Chandramouli and Raman, 2001;Wang et al 2010;Ferreira and Teegavarapu, 2012;Fu et al 2014). Some of the model applications in river system flood control studies can be found in the works of Needham et al (2000), Braga and Barbosa (2001) and Hsu (2007 and2008).…”

Application of a goal programming algorithm to incorporate environmental requirements in a multi-objective Columbia River Treaty Reservoir optimization model

“…The authors evaluated the performance of these three models and concluded that the SLP model can be used for planning purposes similar to the LP model but with faster convergence, whereas the NLP model can provide the most accurate and suitable results, particularly for real-time operations. The application of a multi-objective optimization technique coupled with a hydrologic model was developed by Wang et al (2010), who combined a global optimization system with a distributed biosphere hydrologic model coupled with reservoir routing model. The application of these models to simulate the operation of Hoa Binh Reservoir in China resulted in the significant reduction of peak flood at a downstream control point and increased reservoir levels after the simulation period, which can be beneficial for future water supply (Wang et al 2010).…”