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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/35930

    Title: 應用多目標規劃於水庫聯合供水之研究
    Other Titles: A study of multi-objective planning for the joint operating of a two-reservoir system
    Authors: 陳昱志;Chen, Yu-chih
    Contributors: 淡江大學水資源及環境工程學系碩士班
    張麗秋;Chang, Li-chiu
    Keywords: 多目標;水庫聯合供水;規線;遺傳演算法;NSGA-II;Multi-Objective;Joint operating;rule curve;GA;NSGA-II
    Date: 2009
    Issue Date: 2010-01-11 07:21:18 (UTC+8)
    Abstract: 翡翠與石門水庫為台灣北部地區供水最重要兩大水庫,不僅擁有各自供水區外,並同時擁有一個共同供水區,其平日操作通常以本身運轉規線(rule curve)為參考依據,然而規線訂立時並未考量鄰近水庫之水資源調度。故本研究運用Non-Dominated Sorting Genetic Algorithm(NSGA-II)搜尋雙水庫系統之聯合供水策略。兩水庫缺水指標(SI)最小為前提,依據各自運轉規線供應個別供水區;並以聯合運轉規線供應共同供水區。
    The Feitsui and Shihmen reservoirs are two most important reservoirs for supplying water in Northern Taiwan. The daily operation of the two reservoirs is based on their own rule curves; however, the rule curves are not designed for supporting another reservoir in water supply. They have their own water districts and one common water district. This study applies the non-dominated sorting genetic algorithm (NSGA-II) to find the strategies for the joint operation of the two-reservoir system. They use their own operating rule curves to supply for their own districts and one joint operating rule curve for the common district; besides, they have to assure their own water districts of the minimal water shortage index (SI).
    A daily operational simulation model is developed to guide the releases of the reservoir system according to the current storage levels, the rule curves, and water demands and then to calculate the shortage indices (SI) of both reservoirs. The NSGA-II is adopted for minimizing the SI values through searching the optimal joint operating strategies. Three alternatives are designed to investigate the joint operation of the two-reservoir system. Alternative 1 does not any constraints for the joint operating rule curves; alternative 2 limits the shape of the joint operating rule curves similar to the shape of the original rule curves; alternative 3 limits the water level of rule curves during flood season in addition to the constraints of alternative 2.
    Based on 49 years historical data set, the results of these three alternatives show the Feitsui reservoir has water surplus to support the common district. Alternative 1 can obtain the best pareto-front solutions; the pareto-fronts of alternatives 2 and 3 are very close. The results indicate that NSGA-II is a promising approach to offer a number of diversified alternative strategies for the joint operation of the two-reservoir system. The wide spread of pareto-front (optimal) solutions allow the decision maker to facilely determine the best compromise solutions through the trade-off between two reservoirs’ operational strategies and make the method very attractive for real-world applications.
    Appears in Collections:[Graduate Institute & Department of Water Resources and Environmental Engineering] Thesis

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