Annual and monthly reservoir operating rules generated by deterministic optimization

Karamouz, ‪Mohammad; Houck, Mark H.

doi:10.1029/wr018i005p01337

Cited by 118 publications

(46 citation statements)

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“…A otimização estocástica implícita emprega um modelo de otimização determinística para operar o reservatório sob vários cenários de afluências igualmente prováveis e, em seguida, examina o conjunto resultante de dados operacionais ótimos a fim de estabelecer as curvas-guia [10], [11], [12], [13], [14], [15], [16]. Os cenários de afluência podem ser selecionados a partir dos registros históricos (quando a série é suficientemente longa), mas são geralmente obtidos por modelos de geração de vazões sintéticas.…”

Section: A Otimização Estocástica Implícitaunclassified

Operational Rule Curves of a Reservoir in Sergipe Derived by Implicit Stochastic Optimization and Nonlinear Regression

Santos

Celeste

2016

Sci. cum Ind.

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ResumoEste artigo apresenta o desenvolvimento e aplicação de curvas-guia operacionais de reservatórios de abastecimento, usando como estudo de caso a barragem do rio Poxim, em Sergipe, por meio da metodologia de otimização estocástica implícita suportada por análises de regressão (OEI-REG). O desempenho da OEI-REG é comparado com os da política de operação padrão de reservatórios (SOP: standard operating policy), da otimização determinística perante previsão perfeita de afluências futuras (ODPP) e da programação dinâmica estocástica (PDE). A princípio, são empregados cem cenários de cem anos de vazões mensais para a calibração do modelo. Posteriormente, lança-se mão de cem novas séries de afluências visando a validação dos quatro procedimentos estudados. Os resultados indicam a viabilidade da utilização da OEI, tendo em vista sua menor vulnerabilidade em relação à SOP, assim como a proximidade de suas operações com as da ODPP. Comparando-se a OEI-REG com a PDE, percebe-se a curta distância entre os valores advindos de ambas, inclusive operações menos vulneráveis por meio da OEI-REG, justificando a adoção desta, por sua matemática simplificada em comparação com a PDE. Palavras-chaveOtimização Estocástica; Operação de Reservatórios; Curvas-guia; Regressão. Operational Rule Curves of a Reservoir in Sergipe Derived by Implicit Stochastic Optimization and Nonlinear RegressionAbstract This paper presents the development and application of operational rule curves for water supply reservoirs, using as a case study the Poxim river dam, Sergipe, by means of implicit stochastic optimization supported by regression analysis (ISO-REG). The performance of ISO-REG is compared with those of the standard reservoir operating policy (SOP), perfect-forecast deterministic optimization (PFDO) and stochastic dynamic programming (SDP). At first, a hundred 100-year monthly inflow scenarios are used for the model calibration. Later, a hundred new inflow series are applied for validation of the four procedures. The results indicate the feasibility of using ISO in view of its less vulnerability when compared to the SOP as well as the proximity of its operations with those from the PFDO. The comparison of ISO-REG with SDP shows small differences between both, including less vulnerable operations by ISO-REG, justifying its adoption for its simplified mathematics as compared to SDP. zado por altas taxas de evaporação, variação espacial e temporal das chuvas, além de baixas intensidades pluviométricas, o que, por sua vez, provocam transtornos sociais, econômicos e ambientais. Deste modo, percebe-se a necessidade da adoção, por parte dos gestores de recursos hídricos, de políticas sustentáveis para a operação das obras hidráulicas existentes, particularmente dos reservatório de abastecimento, visando a racionalização dos insumos disponíveis, tendo em vista a impossibilidade de efetiva interferência nas condicionantes impostas pela natureza. KeywordsA operação de reservatórios de abastecimento é geralmente norteada pelas chamadas curvas-guia, as...

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Section: A Otimização Estocástica Implícitaunclassified

Operational Rule Curves of a Reservoir in Sergipe Derived by Implicit Stochastic Optimization and Nonlinear Regression

Santos

Celeste

2016

Sci. cum Ind.

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“…The maximum social and economic benefits are usually selected as the optimization objective (Dong et al 2007). Currently, the methods most widely used to optimize dam operation are dynamic programming method (Little 1955), multi-objects analysis (Yang and Liu 2001), decomposition and coordination of large scale systems (Turgeon 1981), genetic algorithms (Ahmed and Sarma 2005), and artificial neural networks (Karamouz and Houck 1982). Along with increased human activities in basins, the negative impacts of dams and floodgates on riverine ecology and environments have become more apparent in recent years.…”

Section: Introductionmentioning

confidence: 99%

Water quantity and quality optimization modeling of dams operation based on SWAT in Wenyu River Catchment, China

Zhang

Xia

Chen

et al. 2010

Environ Monit Assess

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Water quantity and quality joint operation is a new mode in the present dams' operation research. It has become a hot topic in governmental efforts toward integrated basin improvement. This paper coupled a water quantity and quality joint operation model (QCmode) and genetic algorithm with Soil and Water Assessment Tool (SWAT). Together, these tools were used to explore a reasonable operation of dams and floodgates at the basin scale. Wenyu River Catchment, a key area in Beijing, was selected as the case study. Results showed that the couThese authors contributed equally to this work. pled water quantity and quality model of Wenyu River Catchment more realistically simulates the process of water quantity and quality control by dams and floodgates. This integrated model provides the foundation for research of water quantity and quality optimization on dam operation in Wenyu River Catchment. The results of this modeling also suggest that current water quality of Wenyu River will improve following the implementation of the optimized operation of the main dams and floodgates. By pollution control and water quantity and quality joint operation of dams and floodgates, water quality of Wenyu river will change significantly, and the available water resources will increase by 134%, 32%, 17%, and 82% at the downstream sites of Sha River Reservoir, Lutong Floodgate, Xinpu Floodgate, and Weigou Floodgate, respectively. The water quantity and quality joint operation of dams will play an active role in improving water quality and water use efficiency in Wenyu River Basin. The research will provide the technical support for water pollution control and ecological restoration in Wenyu River Catchment and could be applied to other basins with large number of dams. Its application to the Wenyu River Catchment has a great significance for the sustainable economic development of Beijing City.

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“…Karamouz and Houck [24] showed that 20 storage values could be adequate for a reservoir with storage capacity of up to 170% of the mean annual flow. For convenience of calculation, a number of 21 representative discrete storage values are set evenly.…”

Section: Case Studiesmentioning

confidence: 99%

Stochastic Linear Programming for Reservoir Operation with Constraints on Reliability and Vulnerability

Chen

Kang

Wang

2018

Water

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Reliability and vulnerability (RV) are two very important performance measures but, due to their stage-inseparable nature, they cannot be explicitly incorporated in stochastic dynamic programming (SDP), which is extensively used in reservoir operation. With inflows described as a Markov chain, a stochastic linear programming (SLP) model is formulated in this paper to explicitly incorporate the RV constraints in the reservoir operation, aimed at maximizing the expected power generation by determining the optimal scheduling decisions and their probabilities. Simulation results of the SLP and SDP models indicate the equivalence of the proposed SLP and SDP models without considering the RV constraints, as well as the strength of the SLP in explicitly incorporating the RV constraints. A simulated scheduling solution also reveals a reduction of power generation fluctuation, with the reservoir capacity emptied in advance to meet given reliability and vulnerability.

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Annual and monthly reservoir operating rules generated by deterministic optimization

Cited by 118 publications

References 2 publications

Operational Rule Curves of a Reservoir in Sergipe Derived by Implicit Stochastic Optimization and Nonlinear Regression

Operational Rule Curves of a Reservoir in Sergipe Derived by Implicit Stochastic Optimization and Nonlinear Regression

Water quantity and quality optimization modeling of dams operation based on SWAT in Wenyu River Catchment, China

Stochastic Linear Programming for Reservoir Operation with Constraints on Reliability and Vulnerability

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