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Scheduling of head-dependent cascaded reservoirs considering discharge ramping constraints and start/stop of units

机译:考虑排放坡度约束和机组起停的水头依赖性梯级水库调度

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摘要

This paper is on the problem of short-term hydro scheduling (STHS), particularly concerning head-dependent reservoirs under competitive environment. We propose a novel method, based on mixed-integer nonlinear programming (MINLP), for optimising power generation efficiency. This method considers hydroelectric power generation as a nonlinear function of water discharge and of the head. The main contribution of this paper is that discharge ramping constraints and start/stop of units are also considered, in order to obtain more realistic and feasible results. The proposed method has been applied successfully to solve two case studies based on Portuguese cascaded hydro systems, providing a higher profit at an acceptable computation time in comparison with classical optimisation methods based on mixed-integer linear programming (MILP).
机译:本文是关于短期水力调度(STHS)的问题,特别是在竞争环境下有关依赖水头的水库的问题。我们提出了一种基于混合整数非线性规划(MINLP)的优化发电效率的新方法。该方法将水力发电视为排水和水头的非线性函数。本文的主要贡献在于,还考虑了排放斜率约束和机组的启动/停止,以获得更现实和可行的结果。与基于混合整数线性规划(MILP)的经典优化方法相比,该方法已成功应用于解决基于葡萄牙级联水力发电系统的两个案例研究,在可接受的计算时间上提供了更高的收益。

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