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Assessment of the economic impact of environmental constraints on annual hydropower plant operation

机译：评估环境制约因素对水电站年度运营的经济影响

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摘要

Environmental constraints imposed on hydropower operation are becoming increasingly restrictive. These constraints may reduce the operational flexibility of a hydro plant and therefore its revenue. The objective of this paper is to assess the economic impact of minimum environmental flows and maximum ramping rates on the annual operation of a hydropower plant For this purpose, a revenue-driven annual optimization model based on discrete dynamic programming and mixed integer linear programming is used. The model considers hourly water inflows and energy prices, limits on reservoir level and water discharge, power generation dependence on the available head, wear and tear costs of hydro units caused by power variations, start-up and shut-down costs of hydro units, and the above-mentioned environmental constraints. In order to show the applicability of the proposed methodology, it is used in a real hydropower plant under five different water year types and 56 distinct combinations of the considered environmental constraints. The results indicate that the revenues of the hydropower plant are very sensitive to the presence and magnitudes of these constraints. Annual losses increase quadratically as a function of the maximum ramping rates and almost linearly as a function of the minimum environmental flows.
机译：对水电运营施加的环境限制变得越来越严格。这些限制可能会降低水力发电厂的运营灵活性，从而降低其收益。本文的目的是评估最小环境流量和最大升温速率对水电厂年运行的经济影响。为此，使用了基于离散动态规划和混合整数线性规划的收入驱动的年度优化模型。 。该模型考虑了每小时的水流入量和能源价格，水库水位和排水量的限制，对可用水头的发电依赖性，由功率变化引起的水电机组的磨损成本，水电机组的启动和关闭成本，以及上述环境限制。为了显示所提出的方法的适用性，它在实际的水力发电厂中使用了五种不同的水年类型和56种不同的考虑环境约束的组合。结果表明，水电厂的收入对这些约束的存在和程度非常敏感。年损失是最大爬升率的函数平方倍地增加，而最小环境流量的函数则线性增加。

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  • 来源
    《Energy Policy》 |2013年第10期|1332-1343|共12页
  • 作者

    Ignacio Guisandez; Juan I. Perez-Diaz; Jose R. Wilhelmi;

  • 作者单位

    Department of Hydraulic and Energy Engineering, El de Caminos, Canales y Puertos, Technical University of Madrid (UPM), Calle Profesor Aranguren s, 28040 Madrid, Spain;

    Department of Hydraulic and Energy Engineering, El de Caminos, Canales y Puertos, Technical University of Madrid (UPM), Calle Profesor Aranguren s, 28040 Madrid, Spain;

    Department of Hydraulic and Energy Engineering, El de Caminos, Canales y Puertos, Technical University of Madrid (UPM), Calle Profesor Aranguren s, 28040 Madrid, Spain;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Environmental constraints; Hydropower plant operation; Optimization;

    机译：环境限制;水电站运行;优化;

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