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Incorporating macro climate indices in flood prevention studies for the Brazilian hydropower system

机译:对巴西水电系统防洪研究的宏观气候指标

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摘要

Hydropower reservoirs with volumes capable of serving for river regulation provide a series of other benefits, for example, flood control. Since the 1970s, in the Brazilian electricity sector, electricity generation and flood control have been the two main shared functions of reservoirs. Operation for power generation involves aiming to keep the reservoirs full, storing water during periods of favourable hydrology, to use it during less favourable hydrological periods. On the other hand, the flood control requires keeping part of the reservoir volume empty (a so-called 'waiting volume') to protect the downstream valley from extreme outflows. One way to optimize the use of the reservoirs is to consider, during the operation planning, information that can better predict the behaviour of the next rainy period. This paper presents a review of the consideration of macroclimatic indices (El Nino - Southern Oscillation) in flood prevention studies in the context of operation planning for the Brazilian hydropower system.
机译:水电站有能够为河流提供服务的卷提供了一系列其他益处,例如防洪。自20世纪70年代以来,在巴西电力部门,发电和防洪一直是水库的两个主要共享功能。发电的操作涉及旨在将储层保持全部,在有利水文中储存水,以在更有利的水文时期使用它。另一方面,防洪需要将储存量的一部分保持为空(所谓的“等待体积”)以保护下游谷免受极端的流出。优化水库使用的一种方法是考虑在运营规划期间,可以更好地预测下一个下雨时期的行为的信息。本文介绍了在巴西水电系统运营规划的背景下审查了宏观指数(El Nino-Southern振荡)在防洪研究中。

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