Journal of Korean Society of Coastal and Ocean Engineers (한국해안·해양공학회논문집)

Korean Society of Coastal and Ocean Engineers (한국해안·해양공학회)
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Experimental Performance Analysis using a Compact Scale Model for Shroud Tidal Current Power Generation System

쉬라우드 조류발전장치의 축소모형실험을 통한 발전 성능 분석

  • Han, Seok Jong (Department of Mechanical Engineering, Wonkwang University) ;
  • Lee, Uk Jae (Department of Civil and Environmental Engineering, Wonkwang University) ;
  • Park, Da In (Department of Mechanical Engineering, Wonkwang University) ;
  • Lee, Sang Ho (Department of Mechanical Engineering, Wonkwang University) ;
  • Jeong, Shin Tark (Department of Civil and Environmental Engineering, Wonkwang University) ;
  • Lee, Sang Seol (Department of Electrical Engineering, Wonkwang University)
  • 한석종 (원광대학교 기계공학과) ;
  • 이욱재 (원광대학교 토목환경공학과) ;
  • 박다인 (원광대학교 기계공학과) ;
  • 이상호 (원광대학교 기계공학과) ;
  • 정신택 (원광대학교 토목환경공학과) ;
  • 이상설 (원광대학교 전기공학과)
  • Received : 2019.07.23
  • Accepted : 2019.08.22
  • Published : 2019.08.31
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Abstract

Experimental investigation was performed to analyze the flow field characteristics and power generation performance for a shroud tidal power generation system. Electrical power output was compared with the rotational speed of the turbine blade and electric load connected to the generator for various flow velocity. As the electrical load decreased, the speed of the turbine increased rapidly and reached by about 2 times. The power output also increased remarkably with the decrease of load, and then decreased after maximum power point. In addition, the maximum power point appeared at high electrical loads as the experimental flow velocity increased. These results of the flow field characteristics and power generation performance analysis of the shroud tidal power generation system variation with the flow velocity conditions and electrical load are expected to be the basic data necessary for the development of efficient shroud tidal power generation system.

해수의 유속과 전기 부하에 따른 쉬라우드 조류발전 시스템의 유동장 특성과 발전 성능 분석을 위하여 회류수조를 이용한 축소모형실험을 수행하였다. 발전기에 연결되는 전기 부하에 대하여 터빈 블레이드의 분당 회전수와 발전기의 전압, 전류를 동시에 측정하여 전기적 출력을 계산하였으며 일정한 유속 조건에서 부하에 따라 큰 차이가 나타났다. 전기 부하가 감소함에 따라 터빈의 분당 회전수는 특정 구간에서 급격히 증가하였고, 평균 약 2배 정도 증가하였다. 또한 부하의 감소와 함께 전력이 급격히 상승하였고, 일정 구간에서 최대 전력지점을 보인 후 낮아지게 된다. 이와 함께 실험 유속이 증가함에 따라 높은 전기 부하에서 최대 전력지점이 나타났다. 이러한 유속 조건과 전기적 부하에 따른 쉬라우드 조류발전 시스템의 유동장 특성과 발전 성능 분석에 대한 결과는 효율적인 쉬라우드 조류발전 시스템 개발에 필요한 기초 자료가 될 수 있을 것으로 기대된다.

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References

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