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首页> 外文期刊>Energy Conversion & Management >Optimal control of conventional hydropower plant retrofitted with a cascaded pumpback system powered by an on-site hydrokinetic system
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Optimal control of conventional hydropower plant retrofitted with a cascaded pumpback system powered by an on-site hydrokinetic system

机译：由现场水动力系统提供动力的级联抽水系统改造后的常规水电站的最优控制

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This paper presents an optimal control strategy for a hydropower plant retrofitted with a hydrokinetic powered cascaded pumpback system in dry season. Pumpback operation aims at recycling a part of the down-stream discharge back to the main dam to maintain a high water level to optimise the energy value of the available water. The problem is formulated as a multi-objective optimisation problem to simultaneously minimise the grid pumping energy demand, minimise the wear and tear associated with the switching frequency of the pumps, maximise the restoration of the volume of the dam through pump back operation and maximise the use of on-site generated hydrokinetic power for pumping operation. The performance of the proposed cascaded model is compared with the classical single pump pumped storage model. Simulation results based on a practical case study shows that the cascaded pumpback model can reduce the pumping energy demand by up to 48.18% and increase the energy yield of the resultant system by up to 47.10% in dry season. (C) 2016 Elsevier Ltd. All rights reserved.
机译：本文提出了在旱季对装有水动力串联泵送系统的水电厂的最佳控制策略。回抽操作旨在将一部分下游排放物再循环回主坝，以维持高水位，以优化可用水的能量值。该问题被表述为多目标优化问题，以同时最小化电网抽水的能源需求，最小化与水泵的开关频率相关的损耗，通过回水操作最大程度地恢复大坝的体积以及最大程度地减少水电的损耗。使用现场产生的流体动力进行泵送操作。将所提出的级联模型的性能与经典的单泵抽水存储模型进行了比较。基于实际案例研究的仿真结果表明，级联的抽水模型可以在干旱季节减少高达48.18％的泵送能量需求，并最多将最终系统的能量产量提高47.10％。 （C）2016 Elsevier Ltd.保留所有权利。

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