Journal of Korea Water Resources Association (한국수자원학회논문집)

Korea Water Resources Association (한국수자원학회)
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Evaluation of hydropower dam water supply capacity (I): individual and integrated operation of hydropower dams in Bukhan river

발전용댐 이수능력 평가 연구(I): 북한강수계 개별 댐 및 댐군 용수공급능력 분석

  • Jeong, Gimoon (Korea Rural Community Corporation, Rural Research Institute) ;
  • Choi, Jeongwook (Department of Civil Engineering, Kyung Hee University) ;
  • Kang, Doosun (Department of Civil Engineering, Kyung Hee University) ;
  • Ahn, Jeonghwan (Hangang Hydro Power Site, Korea Hydro & Nuclear Power Co., LTD.) ;
  • Kim, Taesoon (Hangang Hydro Power Site, Korea Hydro & Nuclear Power Co., LTD.)
  • 정기문 (한국농어촌공사 농어촌연구원) ;
  • 최정욱 (경희대학교 사회기반시스템공학과) ;
  • 강두선 (경희대학교 사회기반시스템공학과) ;
  • 안정환 (한국수력원자력(주) 한강수력본부 수자원관리부) ;
  • 김태순 (한국수력원자력(주) 한강수력본부 수자원관리부)
  • Received : 2022.05.15
  • Accepted : 2022.06.08
  • Published : 2022.07.31
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Abstract

Recently, uncertainty in predicting available water resources is gradually increasing due to climate change and extreme weather conditions. Social interest in water management such as flood and drought prevention is also increasing, and after the unification of water management implemented in 2018, domestic water management is facing a major turning point. As part of such strengthening of water management capabilities, various studies are being conducted to utilize a hydropower dam for flood control and water supply purposes, which was mainly operated for hydroelectric power generation. However, since the dam evaluation methods developed based on a multi-purpose dam are being applied to hydropower dams, an additional evaluation approach that can consider the characteristics of hydropower dams is required. In this study, a new water supply capacity evaluation method is presented in consideration of the operational characteristics of hydropower dams in terms of water supply, and a connected reservoir simulation method is proposed to evaluate the comprehensive water supply capacity of a dam group operating in a river basin. The presented method was applied to the hydropower dams located in the Bukhan River basin, and the results of the water supply yield of individual dams and multi-reservoir systems were compared and analyzed. In the future, the role of hydropower dams for water supply during drought is expected to become more important, and this study can be used for sustainable domestic water management research using hydropower dams.

최근 기후변화 및 기상이변 등으로 인해 가용 수자원 예측의 불확실성이 점차 커져가고 있다. 홍수 및 가뭄 예방 등 물관리에 대한 사회적 관심 또한 증가하고 있으며, 2018년 시행된 물관리일원화와 더불어 국내 물관리는 큰 전환점을 맞이하고 있다. 이러한 물관리 역량 강화의 일환으로, 과거 수력발전을 중심으로 운영되었던 발전용댐을 이·치수 목적으로 활용하기 위한 다양한 검토가 이루어지고 있다. 그러나, 주로 다목적댐을 대상으로 개발된 댐 평가 기법들이 발전용댐에 그대로 적용되고 있어, 발전용댐의 특성을 고려할 수 있는 추가적인 평가기법이 요구된다. 본 연구에서는 저수지 운영모의 방법을 활용하여 이수 측면에서 발전용댐의 운영 특성을 고려한 댐별 용수공급능력 산정 방법을 새롭게 제시하였으며, 여러댐이 상하류에 걸쳐 운영되고 있는 조건에서 연계 댐군의 종합적인 용수공급능력을 평가할 수 있는 저수지 연결모의 방법을 제시하였다. 제시된 방법은 북한강수계 발전용 댐을 대상으로 적용되었으며, 개별 댐의 용수공급능력 산정 결과와 댐군 연결모의를 통한 용수공급능력을 비교 분석하였다. 향후 발전용댐의 가뭄시 물 공급 역할은 더욱 중요해질 것으로 예상되며, 본 연구 결과는 발전용댐을 활용한 지속가능한 국내 물 관리 연구에 활용될 수 있을 것으로 기대된다.

Keywords

Acknowledgement

본 연구는 1) 한국수력원자력(주) 「발전용댐 이·치수 능력검토 및 수문학적 안정성 평가 용역」의 지원과 2) 환경부 「기후변화특성화대학원사업」의 지원으로 수행되었습니다. 이에 감사드립니다.

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