Hydrothermal scheduling with variable head hydroelectric plants: Proposed strategies using benders decomposition and outer approximation

C. J. Lopez-Salgado, O. Añó, Diego M. Ojeda-Esteybar
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引用次数: 6

Abstract

Hydrothermal scheduling is a complex task that must deal with problems distinguished by a stochastic, multi-objective, dynamic, nonlinear and non-convex character. This paper proposes two decomposition methods to address the short term hydrothermal scheduling of systems that have hydroelectric plants with nonlinear or non-convex productivity functions. One is based on the Benders Decomposition principle and the other on the Outer Approximation algorithm. Both strategies allow one to deal with multi-stage mixed integer nonlinear problems, by decomposing the original problem into problems of known structure, smaller size and complexity level, which can be later approached using the powerful mathematical optimization solvers available today. By means of two case studies, it will be demonstrated that the proposed strategies are effective and useful.
变水头水电厂热液调度:利用弯管分解和外部逼近提出的策略
热液调度是一项复杂的任务,必须处理具有随机、多目标、动态、非线性和非凸特征的问题。针对具有非线性或非凸生产力函数的水电厂系统的短期热液调度问题,提出了两种分解方法。一种是基于Benders分解原理,另一种是基于Outer逼近算法。这两种策略都允许人们处理多阶段混合整数非线性问题,通过将原始问题分解为已知结构,较小尺寸和复杂程度的问题,这些问题可以稍后使用强大的数学优化求解器进行处理。通过两个案例研究,将证明所提出的战略是有效和有用的。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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