淡江大學機構典藏:Item 987654321/35998
English  |  正體中文  |  简体中文  |  全文笔数/总笔数 : 62819/95882 (66%)
造访人次 : 3999680      在线人数 : 588
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library & TKU Library IR team.
搜寻范围 查询小技巧：
  • 您可在西文检索词汇前后加上"双引号"，以获取较精准的检索结果
  • 若欲以作者姓名搜寻，建议至进阶搜寻限定作者字段，可获得较完整数据
    •  进阶搜寻


    jsp.display-item.identifier=請使用永久網址來引用或連結此文件: https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/35998


    题名: 多標的遺傳演算法探討南化水庫最佳限水策略
    其它题名: Exploring optimal hedging rules of the nanhua reservoir using multi-objective genetic algorithm
    作者: 黃景裕;Huang, Jing-yu
    贡献者: 淡江大學水資源及環境工程學系碩士班
    張麗秋;Chang, Li-chiu
    关键词: 多標的遺傳演算法;Pareto最佳解;限水策略;缺水率;可利用水量;multi-objective genetic algorithm;Pareto optimal solutions;hedging rule;shortage ratio;water availability
    日期: 2008
    上传时间: 2010-01-11 07:27:12 (UTC+8)
    摘要: 本文研究目的為利用多標的遺傳演算法探討南化水庫乾旱時期最佳限水策略，限水策略以標準操作策略(SOP)為基礎並加入限水參數，限水策略依參數個數分為一點法、二點法、及三參數法，另依參數是否隨時間變化分為定值及時變限水策略，所考慮的參數時間變化頻率有半年變化、季變化及月變化。本文選用相互衝突的總缺水率與單旬最大缺水率作為衡量供水水庫營運效率的指標，並以非優勢排列遺傳演算法(NSGA-II)求解以此二缺水指標為標的函數的多標的Pareto最佳解。經應用於南化水庫分析後顯示增加限水參數個數及參數時間變化頻率可有效改善水庫限水效果，即 Pareto鋒線往減少總缺水率及單旬最大缺水率的方向移動，且其限水效果可相互疊加，因此在所分析的十二種限水策略中以三參數法月變化限水策略為最優。
    This study aims to exploring optimal hedging rules using multi-objective genetic algorithm for the Nanhua Reservoir during droughts. Hedging parameters are added in the SOP-based rules to construct water-rationing measures. One-, two-, and three-parameter hedging rules associated with constant and time-varying hedging parameters are employed to investigate effects on water-shortage characteristics. Time-varying frequencies considered in this study include semi-annually, quarterly, and monthly varying. Two conflicting shortage indices, total shortage ratio and maximum 10-day shortage ratio, are used to evaluate operation performance of a water-supply reservoir. The Pareto optimal solutions of this multi-objective optimization are searched by the non-dominated shorting genetic algorithm II (NSGA-II). The proposed methodology is applied to the Nanhua Reservoir that is located in southern Taiwan. The results show that increasing time-varying frequency of hedging parameters can effectively reduce water-shortage characteristic, which are further improved by increasing numbers of hedging parameters. Thus, the three-parameter monthly varying hedging rule performs best among twelve hedging rules evaluated in this study.
    显示于类别:[水資源及環境工程學系暨研究所] 學位論文

    文件中的档案:

    档案 大小格式浏览次数
    0KbUnknown244检视/开启

    在機構典藏中所有的数据项都受到原著作权保护.

    TAIR相关文章

    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library & TKU Library IR teams. Copyright ©   - 回馈