Sensitivity Analysis of Hydroelectric Power Generation from Cascading Reservoirs

Asfaw, Tilahun Derib; Yusof, Khamaruzaman Wan; Hashim, Ahmad Mustafa

doi:10.4028/www.scientific.net/amr.622-623.1152

Cited by 2 publications

(2 citation statements)

References 9 publications

(9 reference statements)

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“…is a mutated member? σ is fixed number usually chosen in the interval [1][2]. F is known as a mutation vector factor and F> 0.…”

Section: Producing Childrenmentioning

confidence: 99%

“…Oliveira & Loucks [1] used the genetic algorithm to optimize the parameters of the exploitation policy in a multi-reservoir system [1]. Asfaw and Hashim used a genetic algorithm to optimize hydroelectricity [2]. Tayebian et al [3] reviewed the performance of the genetic algorithm in order to optimize the hydrogeological reservoir exploitation policy to maximize the hydroelectric power generation.…”

Section: Introductionmentioning

confidence: 99%

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"Comparison Linear Programming and Improving Shuffled Complex Algorithm for Optimizing Multi Reservoir Systems"

Najarchi¹

2021

EAES

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The increasing growth in the dimensions and complexities of the optimal utilization problem of the reservoir system, especially hydroelectric power generation systems regarding increasing growth in need to energy and reduction of fossil fuel resources has reduced the use of classic and conventional methods and also has led to the use of modern search methods and modern meta-heuristic and evolutionary algorithms for optimization. In the present study, Shuffled Complex Evolutionary Algorithm (SCE) was investigated. Then, it was integrated with Differential Evolutionary Algorithm (DE), and Improved Shuffled Complex Evolutionary Algorithm (SCE-DE) was constructed. To validate and evaluate function of this algorithm, first, Ackley complex mathematical function and then four other benchmark functions was solved using both SCE and SCE-DE methods. The results were showed that SCE-DE algorithm has a better function than SCE algorithm. Then, in order to better evaluate the algorithm function, known problem of optimization-four-reservoir system was solved. SCE and SCE-DE solutions were compared with absolute optimal solution obtained from LP. The results showed that SCE-DE objective function solution differs from LP solution (0.007%). While SCE objective function solution differs from LP solution (82.1%). In present study, also, the results of the invented algorithm were compared with the results of other researchers in solving this four-reservoir system show that the proposed algorithm has an optimal solution closer to LP solution.

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“…is a mutated member? σ is fixed number usually chosen in the interval [1][2]. F is known as a mutation vector factor and F> 0.…”

Section: Producing Childrenmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

"Comparison Linear Programming and Improving Shuffled Complex Algorithm for Optimizing Multi Reservoir Systems"

Najarchi¹

2021

EAES

View full text Add to dashboard Cite

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Optimization of Year-End Water Level of Multi-Year Regulating Reservoir in Cascade Hydropower System Considering the Inflow Frequency Difference

2020

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In order to analyze the year-end water level of multi-year regulating reservoir of the cascade hydropower system, this paper studied the joint operation optimization model of cascade reservoirs and its solving method based on multi-dimensional dynamic programming, and analyzed the power generation impact factors of cascade system that contains multi-year regulating reservoir. In particular, taking the seven reservoirs in the middle and lower reaches of Yalong River as an example, the optimal year-end water levels of multi-year regulating reservoir under the multi-year average situation and different inflow frequencies situation were studied. Based on the optimal calculation results of multi-dimensional dynamic programming, the inflow frequency difference considered operation rule of year-end water level of Lianghekou reservoir was extracted using the least square principle. The simulation results showed that, compared with the fixed year-end water level in multi-year, the extracted rule can improve the cascade power generation by more than 400 million kWh in an average year, representing an increase of 0.4%. This result means that the extracted rule can give full play to the regulation performance of multi-year regulating reservoir and improve the conversion efficiency of hydropower resources in cascade system. This is of great significance to the practical operation of cascade reservoirs system that contains multi-year regulating reservoir.

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Sensitivity Analysis of Hydroelectric Power Generation from Cascading Reservoirs

Cited by 2 publications

References 9 publications

"Comparison Linear Programming and Improving Shuffled Complex Algorithm for Optimizing Multi Reservoir Systems"

"Comparison Linear Programming and Improving Shuffled Complex Algorithm for Optimizing Multi Reservoir Systems"

Optimization of Year-End Water Level of Multi-Year Regulating Reservoir in Cascade Hydropower System Considering the Inflow Frequency Difference

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