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2026 Vol.59, Issue 1 Preview Page

Research Article

Run of river hydropower potential assessment at Kaldan Weir at Seosicheon, Gurye-gun, Jeollanam-do, Korea

구례군 서시천 깔단보의 하천 흐름을 활용한 초소수력 잠재발전수자원량의 평가

Moo-Kyeong Leea
,
Ji-Min Hwangb
,
Kuk-Hyun Ahnc
,
Dongwon Nad
,
Hyosang Leee*
이 무경a
,
황 지민b
,
안 국현c
,
나 동원d
,
이 효상e*
aDoctoral Student, School of Civil Engineering, Chungbuk National University, Cheongju, Korea
bUndergraduate Student, School of Civil Engineering, Chungbuk National University, Cheongju, Korea
cAssociate Professor, Department of Civil and Environmental Engineering, Kongju National University, Cheonan, Korea
dDirecter, DAEYANG ROLLENT CO., LTD., Korea
eProfessort, School of Civil Engineering, Chungbuk National University, Cheongju, Korea
a충북대학교 대학원 토목공학부 박사과정수료
b충북대학교 대학원 토목공학부 학부과정
c국립공주대학교 스마트인프라공학과 부교수
d대양롤랜트(주) 상무
e충북대학교 토목공학부 교수
*Corresponding Author
31 January 2026. pp. 29-38
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Abstract

Hydropower, a conventional renewable energy source, is gaining renewed attention as a practical pathway toward deep decarbonization. This study assesses the feasibility of a small run-of-river (RoR) scheme at the Kaldan Weir on the Seosicheon Stream, Gurye-gun, Jeollanam-do (effective head = 1 m; overall efficiency = 85 %). We first characterize the present river environment and then estimate exploitable hydropower potential without constructing additional dams or barrages. Three independent approaches are applied: (1) the basin-average runoff method, (2) a flow-duration-curve (FDC) approach, and (3) direct use of an observed stage–discharge hydrograph. Annual energy yields are 274,062 kWh/year (method 1), 104,322 kWh/year (method 2, Q185~Q355), and 95,882 kWh/year (method 3, Average, Q185~Q355). Corresponding reductions in greenhouse-gas and particulate emissions are estimated at 125.907 tCO2/ year – 2.095 kg/year (method 1), 47.926 tCO2/year - 0.798kg/year (method 2, Q185~Q355), and 44.049 tCO2/year – 0.733 kg/year (method 3, Average, Q185~Q355), respectively. Results confirm that even low-head reaches in small Korean rivers can deliver meaningful climate- and air-quality co-benefits when developed as RoR hydropower, supporting wider deployment of micro-scale installations in similar settings.

Keywords
Hydro power
Micro hydro power
Small catchment
Carbon emission reduction
Jeollanam-do

수력은 전통적인 재생에너지원으로서 탈탄소 기후위기 대응에서 그 중요성이 재조명되고 있다. 본 연구는 전라남도 구례군 서시천 깔단보를 대상으로 별도의 댐 및 보 설치 없이 현재의 하천환경, 자연하천 유하량(Run of River, RoR)을 활용한 개발 가능한 발전 수자원량을 산정하고, 이에 대한 탄소발생 및 미세먼지 저감 효과를 평가하여 소규모 수력발전 사업의 가능성을 평가하였다. 발전 수자원량 평가는 1) 유역 평균 유출량 방법, 2) 유황곡선 방법, 3) 실 관측 수문곡선 방법을 적용하며, 발전량을 산정하고, 이에 따른 연간 탄소발생 및 미세먼지 저감 효과를 산정한다. 서시천 깔단보(유효낙차 1 m, 발전 효율 85%)의 발전 수자원량 평가는 각각의 방법에 따라 1) 274,062 kWh/year, 2) 104,322 kWh/year (Q185～Q355), 3) 95,882 kWh/year (평균, Q185～Q355), 이며, 탄소발생-미세먼지(PM2.5) 저감효과는 각각 1) 125.907 tCO2 – 2.095 kg, 2) 47.926 tCO2 – 0.798 kg (Q185～Q355), 3) 44.049 tCO2 – 0.733 kg (평균, Q185～Q355) 이다. 본 연구를 통하여 소규모 하천의 RoR 발전 가능성을 확인하였다.

키워드
수력
초소수력
소유역
탄소배출 저감
전라남도
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Information
  • Publisher :KOREA WATER RESOURECES ASSOCIATION
  • Publisher(Ko) :한국수자원학회
  • Journal Title :Journal of Korea Water Resources Association
  • Journal Title(Ko) :한국수자원학회 논문집
  • Volume : 59
  • No :1
  • Pages :29-38
  • Received Date : 2025-08-08
  • Revised Date : 2025-10-12
  • Accepted Date : 2025-11-07
  • DOI :https://doi.org/10.3741/JKWRA.2026.59.1.29
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