• 제목/요약/키워드: Tidal current energy

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인천만 조력에너지 개발을 위한 GIS 데이터모델링 (GIS Data Modeling Plan for Tidal Power Energy Development in Incheon Bay of Korea)

  • 오정희;최현우;박진순;이광수
    • 한국신재생에너지학회:학술대회논문집
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    • 한국신재생에너지학회 2011년도 춘계학술대회 초록집
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    • pp.166.2-166.2
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    • 2011
  • Incheon Bay of Korea is one of the most famous regions for high tidal range. Ministry of Land, Transport and Maritime Affairs(MLTM) has implemented preliminary investigation for tidal power energy development in this area since 2006. Through field observations, various kinds of marine data consisting of depth and geography, marine weather, tidal currents, wave, seawater characteristics, geology, marine ecosystem and marine environment were gathered. To use these data efficiently for the determining of feasibility of developing and appropriateness of project scale, spatial data management and application system is essential. Therefore, in this study, the concept, methodology and procedure of spatial data modeling are defined for tidal energy development. Spatial data modeling consists of essential model relating to tidal energy directly and optional model including environmental factors. Essential model is composed with fundamental elements like as depth, geography, and several numerical modeling results(tide, tidal current, wave).

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조류발전용 로터 블레이드의 최적 형상 설계 (Optimal Rotor Blade Design for Tidal In-stream Energy)

  • 양창조
    • 해양환경안전학회지
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    • 제17권1호
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    • pp.75-82
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    • 2011
  • 해양에너지는 아직 개발되지 않은 가장 유망한 재생 및 청정에너지 자원 중 하나이다. 특히 우리나라는 세계적으로 보기 드문 조류발전의 적지이며, 이를 이용하기 위해서는 각 해역에 적합한 조류에너지 변환 장치의 개발이 매우 필요하다. 따라서 본 연구에서는 조류발전 방식 중 수평축 로터 블레이드의 최적형상 설계 및 성능평가를 목적으로 날개 끝 손실 모델을 포함하는 날개요소 운동량이론을 적용한 조류터빈 설계기법을 제안하고, 100 kW급 로터 블레이드를 설계하였다. 또한 블레이드 국부위치에서 주속비에 따른 Prandtl의 날개 끝 손실 변화를 비교하였으며, 정격 날개 끝 속도비에서 NACA63812를 사용하여 설계된 로터 블레이드의 동력계수는 0.49로 우수한 성능을 나타내었다.

가로림만 조력발전소 가동에 따른 조석체계 변화 예측 (Prediction of Tidal Regime According To Garolim Tidal Power Plant operation)

  • 강석구;이광수;박진순;염기대
    • 한국신재생에너지학회:학술대회논문집
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    • 한국신재생에너지학회 2007년도 춘계학술대회
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    • pp.639-643
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    • 2007
  • Tidal regime change with general hydrolic condition change is examined, according to Garolim Tidal Power Plant (TPP) operation. Numerical model has been developed for the Yellow and East China Seas region, in order to consider the tidal regime change by the TPP operation. The changes of tidal elevation and tidal current inside the Garolim bay are also investigated in details, along with examining the change of the tidal flat area with operation. The field measurement for the tide and current have been carried out for the validation of the numerical model and for understanding the state of current system in the present state.

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전동기-발전기 실험장치(Motor-Generator Set)를 이용한 조류발전 시스템의 특성 분석 (Analysis of the Characteristics of the Tidal Current Power Generation System Using Motor-Generator Set)

  • 안원영;임형택;이석현;김근수;조철희
    • 신재생에너지
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    • 제9권4호
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    • pp.19-24
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    • 2013
  • In order to analyze the characteristics of tidal current power generation system, we measured output power in M-G Set (Motor-Generator Set) and MATLAB/Simulink. We installed M-G Set (Motor-Generator Set) and did a simulation using MATLAB/Smulink. The simulation consisted of the tidal current turbine, PMSG, converter, and three-phase PWM inverter. Also, the speed control of the generator was performed using machine side converter. And we measured output voltage, current, power of the generator and the output power of three-phase PWM inverter.

울돌목 시험조류발전소의 기초 시공 사례 (A Case Study on the Foundation Work of Uldolmok Tidal Current Power Plant)

  • 권오정;오명학;박진순;이광수
    • 한국신재생에너지학회:학술대회논문집
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    • 한국신재생에너지학회 2009년도 추계학술대회 논문집
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    • pp.610-613
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    • 2009
  • Uldolmok tidal current power plant was constructed on May 2009 at Jindo Gun in Korea. However it had much trouble in installing structure due to the extremely fast tidal current velocity(max. 5.5m/sec) and the jacket type plant structure. Therefore in this paper, The characteristics of tidal current and sea bed topography at Uldolmok tidal current plant site are investigated, and the detailed foundation work process of the plant is described.

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영구자석 동기발전기와 회류수조를 이용한 조류발전 시스템의 특성 해석 (Analysis of the Characteristics of the Tidal Current Power Generation System Using PMSG and Water Tunnel)

  • 안원영;이석현;김근수;이강희;조철희
    • 신재생에너지
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    • 제9권1호
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    • pp.44-50
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    • 2013
  • In order to analyze the characteristics of tidal current power generation system, we measured the output power according to the stream velocity by a water tunnel system and a simulation in MATLAB/Simulink. The water tunnel system consisted of impeller tidal flow transducer and PMSG with rotor in the water. The simulation consisted of PMSG, the tidal current turbine, and back-to-back converter. Also, we simulated the characteristics of output power according to the change of blade length and angular velocity.

사보니우스형 조류발전 터빈의 설계 및 회류수조 실험을 통한 성능평가 (Design and Performance Test of Savonius Tidal Current Turbine with CWC)

  • 조철희;이준호;노유호;고광오;이강희
    • 한국해양공학회지
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    • 제26권4호
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    • pp.37-41
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    • 2012
  • Due to global warming, the need to secure alternative resources has become more important nationally. Because of the very strong current on the west coast, with a tidal range of up to 10 m, there are many suitable sites for the application of TCP (tidal current power) in Korea. In the southwest region, a strong current is created in the narrow channels between the numerous islands. A rotor is an essential component that can convert tidal current energy into rotational energy to generate electricity. The design optimization of a rotor is very important to maximize the power production. The performance of a rotor can be determined using various parameters, including the number of blades, shape, sectional size, diameter, etc. There are many offshore jetties and piers with high current velocities. Thus, a VAT (vertical axis turbine) system, which can generate power regardless of flow direction changes, could be effectively applied to cylindrical structures. A VAT system could give an advantage to a caisson-type breakwater because it allows water to circulate well. This paper introduces a multi-layer vertical axis tidal current power system. A Savonius turbine was designed, and a performance analysis was carried out using CFD. A physical model was also demonstrated in CWC, and the results are compared with CFD.

Design Load Analysis of Current Power Rotor and Tower Interaction

  • Jo, Chul H.;Lee, Kang-Hee;Hwang, Su-Jin;Lee, Jun-Ho
    • International Journal of Ocean System Engineering
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    • 제3권4호
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    • pp.164-168
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    • 2013
  • Tidal-current power is now recognized as a clean power resource. The turbine blade is the fundamental component of a tidal current power turbine. The kinetic energy available within a tidal current can be converted into rotational power by turbine blades. While in service, turbine blades are generally subjected to cyclic fatigue loading due to their rotation and the rotor-tower interaction. Predicting the fatigue life under a hydrodynamic fatigue load is very important to prevent blade failure while in service. To predict the fatigue life, hydrodynamic load data should be acquired. In this study, the vibration characteristics were analyzed based on three-dimensional unsteady simulations to obtain the cyclic fatigue load. Our results can be applied to the fatigue design of horizontal-axis tidal turbines.

조류발전용 수평축 터빈의 형상설계 및 가변 부하를 이용한 성능실험 (HAT Tidal Current Turbine Design and Performance Test with Variable Loads)

  • 조철희;노유호;이강희
    • 신재생에너지
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    • 제8권1호
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    • pp.44-51
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    • 2012
  • Due to a high tidal range of up to 10 m on the west coast of Korea, numerous tidal current projects are being planned and constructed. The turbine, which initially converts the tidal energy, is an important component because it affects the efficiency of the entire system. Its performance is determined by design variables such as the number of blades, the shape of foils, and the size of a hub. To design a turbine that can extract the maximum power on the site, the depth and duration of current velocity with respect to direction should be considered. Verifying the performance of a designed turbine is important, and requires a circulating water channel (CWC) facility. A physical model for the performance test of the turbine should be carefully designed and compared to results from computational fluid dynamics (CFD) analysis. In this study, a horizontal axis tidal current turbine is designed based on the blade element theory. The proposed turbine's performance is evaluated using both CFD and a CWC experiment. The sealing system, power train, measuring devices, and generator are arranged in a nacelle, and the complete TCP system is demonstrated in a laboratory scale.

국내 해양에너지 실용화 동향: 조력, 조류에너지 (Trend of Utilization Techniques of Ocean Energy in Korea : Tide and Tidal Current Energy)

  • 조대환;양창조;최민선;최주열
    • 한국마린엔지니어링학회:학술대회논문집
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    • 한국마린엔지니어링학회 2006년도 전기학술대회논문집
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    • pp.257-258
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    • 2006
  • 해양에너지는 지구의 70%를 점유하는 해양이 태양에너지를 받아서 그것을 내부 에너지로 저장하는 것으로 지속적 보급을 받고 있는 재생 가능한 에너지이다. 본 논문은 해양에너지를 실용화 하는 연구개발 분야 중 최근 주목받고 있는 조력 및 조류에너지에 대해 국내의 동향을 소개하고자 한다.

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