Journal of Korea Water Resources Association (한국수자원학회논문집)

Korea Water Resources Association (한국수자원학회)
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Comparison of Water Supply Reliability by Dam Operation Methods

댐 운영방식에 따른 이수안전도의 비교

  • Choi, Si Jung (Korea Institute of Construction Technology, Water Resources Research Division) ;
  • Lee, Dong-Ryul (Korea Institute of Construction Technology, Water Resources Research Division) ;
  • Moon, Jang Won (Korea Institute of Construction Technology, Water Resources Research Division)
  • 최시중 (한국건설기술연구원 수자원연구실) ;
  • 이동률 (한국건설기술연구원 수자원연구실) ;
  • 문장원 (한국건설기술연구원 수자원연구실)
  • Received : 2014.01.28
  • Accepted : 2014.05.13
  • Published : 2014.06.30
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Abstract

A water supply reliability is mainly influenced by water demand, reservoir storage, and inflow change caused from drought. The water supply reliability can vary depending on the method of dam operation. In Korea, the deficit-supply method which complements water deficit as water shortage occurs in downstream areas has been used for the national water resources master plan using K-WEAP, but the prime flow method, an alternative approach, would show different results of water supply reliability in comparison to the deficit-supply method. The objective of this research is to compare and analyze differences in water supply reliability according to dam operation methods. These results can be used to re-evaluate water supply reliability of dam in a circumstance considering steady dam release for instreamflow in downstream and hydroelectric power generation.

댐의 이수안전도는 물 수요량, 저수량, 가뭄에 의한 유입량에 의해서 주로 영향을 받는다. 그러나 댐 운영방식에 따라 댐의 이수안전도는 차이가 발생할 수 있다. 우리나라의 수자원장기종합계획은 K-WEAP모형을 이용하여 댐 하류의 물부족이 발생하면 물 부족량만큼 공급하는 부족량공급(Deficit supply) 방식을 이용하고 있으나 일정방류(Prime flow) 방식을 적용하면 이수안전도가 달라질 수 있다. 본 연구의 목적은 댐 운영방식에 따른 댐의 이수안전도의 변화를 분석하는 것이다. 이들 결과는 하류의 유지유량공급, 수력 발전을 위하여 일정방류가 고려되는 환경에서 댐의 이수안전도를 재평가하는데 활용될 수 있을 것이다.

Keywords

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