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group of hydropower stations
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  水电站群
     Model for Optimizing Installation Capacity of Group of Hydropower Stations and Its Application
     水电站群装机容量优化选择模型及其应用
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     APPLICATION OF NETWORK TECHNIQUE IN THE OPTIMUM DISTRIBUTION OF INSTALLED CAPACITY FOR A GROUP OF HYDROPOWER STATIONS
     网络技术在水电站群装机容量最优分配中的应用
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     A POWER OUTPUT PROBABILITY DISTRIBUTION MODEL IN GROUP OF HYDROPOWER STATIONS
     水电站群出力概率分布的计算模型
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     The linear Programing Model for Compensating Runoff Regulation of a Group of Hydropower Stations and It′s Application
     水电站群补偿径流调节的线性规划模型及其应用
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     In this paper min-algebra is applied to distribute optimally the installed capacity for a group of hydropower stations, and it has been proved mathematical models are established.
     本文应用极小代数求解水电站群装机容量优化分配问题,并建立了模型。
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     对照组给予胃乃安口服,每次 4 粒,每日 3 次。
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     group
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     The Story Of The Group
     时代集团“赶考”记
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     群的有向图
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     Hydropower and China
     水电与中国
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In order to design parameters and operating rules of waterpower stations, it is necessary to take into account compensation adjustment of multireservoir hydroelectric stations in river planning. There are of obvious interests tooptimize compensation of a group of hydropower stations. It may raise firm power, increase replacing power and cut down investment of power system, and so on. Nevertheless, the great number of variables and constraints with the supplement of reservoirs, typically characterizing...

In order to design parameters and operating rules of waterpower stations, it is necessary to take into account compensation adjustment of multireservoir hydroelectric stations in river planning. There are of obvious interests tooptimize compensation of a group of hydropower stations. It may raise firm power, increase replacing power and cut down investment of power system, and so on. Nevertheless, the great number of variables and constraints with the supplement of reservoirs, typically characterizing this problem, makes very hard to pursue its solution via classical optimal methods. For the sake of high dimensionality, the paper presents a hierarchical control method of optimal compensation adjustment of multireservoir hydroelectric stations. The objective function that is chosen is maximization of the firm power of all water power stations subject to the requirement of well-distributed power. This method consists in breaking up the large and complicated original problem of multi-reservoir optimization, by interaction balance method, into independent reservoir subproblems. A two-level scheme to solve such problem is devised. In the first level, the Flexible Tolerance method is used to solve subproblem. The gradient method is applied to the second-level so as to coordinate subproblems. This enables to find optimal solution in the integrated problem by a simple iterative procedure. An application based on the method to Daduhe river in Sichuan province PRC, is developed with satisfactory results. It is shown that the method requires less memory space, which considerably eases dimensionality difficulties.

电力系统规划、水电站水库参数选择及水库调度运行要求水电站(水库)群进行最优补偿调节,以提高系统总的保证出力,获得最大的替代容量效益。但随着库群数目的增加,其“维数灾”使得现行一些传统优化方法难于求解,为此,本文应用大系统递阶控制原理和方法,以保证出力最大为准则,供水期出力相等作为关联,应用关联平衡法将库群大系统分解成单个水库手系统来求解,构成水电站群最优补偿调节的二级递阶结构,第一级我们应用可变容差法求解子问题,在第二级应用梯度法,这样上下两级反复迭代来求原问题的最优解。该方法用于大渡河梯级确定型水库群补偿调节的优化计算,得到了满意的成果。计算经验表明,水电站群补偿调节优化问题,应用递阶控制方法,比以前该课题所曾用的传统优化方法,所需计算机存储量少,在一定程度上克服了“维数灾”困难。

This paper presents a power output probability distribution model and computation method in any interval of hydropower stasions. On the basis of the model, this paper presents a recusion computation model of the power output probability distribution in group of hydropower stations. The models not only consider the limitation of outflow but also the limitation of applicable capacity in hydropower stations.

本文提出了水电站各时段出力的概率分布模型及计算方法.在此基础上提出了水电站群出力概率分布的递推计算模型。模型既考虑了水电站水流出力的限制,亦考虑了水电站的正常工作容量的限制。

In this paper min-algebra is applied to distribute optimally the installed capacity for a group of hydropower stations, and it has been proved mathematical models are established. By means of case stduy, it has been proved this way is clear-cut in concept, highly adaptable, simple in calculation and suitable for program.

本文应用极小代数求解水电站群装机容量优化分配问题,并建立了模型。用算例证明该方法具有概念明确,适应性强,计算简单和适用于程序化计算等优点。

 
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