한국수자원학회논문집 (Journal of Korea Water Resources Association)

  • 제41권1호
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  • Pages.1-15
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  • 2008
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  • 2799-8746(pISSN)
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  • 2799-8754(eISSN)
한국수자원학회 (Korea Water Resources Association)
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유입량의 변동성을 고려한 저수지 연계 운영 모형의 가중치 선정

Determination of Weight Coefficients of Multiple Objective Reservoir Operation Problem Considering Inflow Variation

  • 김민규 (고려대학교 정보경영공학전문대학원) ;
  • 김재희 (군산대학교 경영회계학부) ;
  • 김승권 (고려대학교 정보경영공학부)
  • Kim, Min-Gyu (Graduate School of Information Management and Security, Korea Univ.) ;
  • Kim, Jae-Hee (School of Business Administration & Accounting, Kunsan Nat'l Univ.) ;
  • Kim, Sheung-Kown (Division of Information Management Engineering, Korea Univ.)
  • 발행 : 2008.01.31
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초록

본 연구의 목적은 금강수계의 가장 효율적인 가중치를 찾을 수 있는 절차를 제시하는 것이다. 일반적으로 다목적 최적화 모형의 결과는 목적함수에 부여된 가중치에 크게 좌우되는 경향이 있다. 특히 다목적 저수지 운영 문제의 경우는 어떤 유입량 시나리오가 적용되느냐에 따라 그에 적합한 가중치가 크게 달라질 수 있다. 따라서 유입량의 변동성을 감안해서 저수지 운영자에게 적합한 초기 가중치를 적용하는 것은 매우 큰 의미가 있다. 이에 본 연구는 유입량의 불확실성을 감안하여 적절한 가중치군을 도출할 수 있는 절차를 제안한다. 제안한 절차에서는 다중목적 최적화모형(GA-CoMOM)을 통해 파레토 집합에 대응되는 가중치군을 도출하고, DEA-윈도우분석(DEA-window analysis)과 교차효율성 분석(cross-efficiency analysis)을 사용하여 후보 가중치에 대한 순위를 산정하고, 이 결과를 분석해서 적합한 가중치를 선정한다. 이 절차를 금강 수계 저수지군 연계 운영 문제에 적용한 결과 유입량의 불확실성을 감안해서 가중치를 설정할 수 있었다.

The purpose of this study is to propose a procedure that will be able to find the most efficient sets of weight coefficients for the Geum-River basin in Korea. The result obtained from multi-objective optimization model is inherently sensitive to the weight coefficient on each objective. In multi-objective reservoir operation problems, the coefficient setting may be more complicated because of the natural variation of inflow. Therefore, for multi-objective reservoir operation problems, it may be important for modelers to provide reservoir operators with appropriate sets of weight coefficients considering the inflow variation. This study presents a procedure to find an appropriate set of weight coefficients under the situation that has inflow variation. The proposed procedure uses GA-CoMOM to provide a set of weight coefficient sets. A DEA-window analysis and a cross efficiency analysis are then performed in order to evaluate and rank the sets of weight coefficients for various inflow scenarios. This proposed procedure might be able to find the most efficient sets of weight coefficients for the Geum-River basin in Korea.

키워드

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피인용 문헌

  1. Development and Assessment of Hedging Rule for Han River Reservoir System Operation against Severe Drought vol.47, pp.10, 2014, https://doi.org/10.3741/JKWRA.2014.47.10.891
  2. Assessment of climate change impacts on the hydrology of Gilgel Abay catchment in Lake Tana Basin, Ethiopia 2009, https://doi.org/10.1002/hyp.7363
  3. An Evaluation of Multi-Reservoir Operation Weighting Coefficients Using Fuzzy DEA taking into account Inflow Variability vol.24, pp.3, 2011, https://doi.org/10.7232/IEIF.2011.24.3.220
  4. Improving Reservoir Operation Criteria to Stabilize Water Supplies in a Multipurpose Dam: Focused on Nakdong River Basin in Korea vol.10, pp.9, 2018, https://doi.org/10.3390/w10091236