• Title/Summary/Keyword: energy and power plant

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A Study on an Improvement Plan of Plant-Use Electricity for New & Renewable Energy Supported by Electric Power Industry Basis Fund (기반기금 지원 신재생에너지 발전에 대한 소내소비전력 처리방안 연구)

  • Jeon, Byung-Kyu;Kim, Jae-Sung
    • 한국신재생에너지학회:학술대회논문집
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    • 2007.11a
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    • pp.678-681
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    • 2007
  • Now Korea depends upon the imported resources for about 97% of total using energy. So from October, 2001 Korean government has supported renewable energy business owners by providing them with Electric Power Industry Basis Fund. Only plant-use electricity of the small hydro power plant is exactly managed, but other renewable energy plants is unprepared or not yet managed. Therefore, in this paper, we'll analyze the plant-use electricity management of the small hydro power and propose improvement plans for plant-use electricity of the photovoltaic power plant.

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Performance Analysis of Supercritical Coal Fired Power Plant Using gCCS Simulator

  • Tumsa, Tefera Zelalem;Mun, Tae-Young;Lee, Uendo;Yang, Won
    • 한국연소학회:학술대회논문집
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    • 2014.11a
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    • pp.37-40
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    • 2014
  • Capturing the carbon dioxide emitted from coal-fired power plants will be necessary if targeted reduction in carbon emissions is to be achieved. Modelling and simulation are the base for optimal operation and control in thermal power plant and also play an important role in energy savings. This study aims to analyze the performance of supercritical coal fired power plant through steady and dynamic simulation using a commercial software gCCS. A whole power plant has been modeled and validated with design data of 500 MWe power plant, base and part load operations of the plant were also evaluated, consequently it had been proven that the simulated result had a good agreement with actual operating data. In addition, the effect of co-firng on the plant efficiency and flue gases were investigated using gCCS simulator.

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A Study on Hydro Energy Development of Discharged Cooling Water at the Power Plant (발전소 온배수의 수력에너지 개발에 관한 연구)

  • Kang, K.S.;Lee, D.S.;Kim, J.Y.
    • 유체기계공업학회:학술대회논문집
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    • 2005.12a
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    • pp.813-818
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    • 2005
  • Cooling seawater of thermal power plant which amounts about 5 cms per 100 MWe has hydro energy of about 3,000 kW at the thermal power plant complex, but this useful hydro energy has not been developed. Therefore, the feasibility study on hydro energy development of three power plants located in the southern and western coast of Korea was performed. Three target power plants are Samcheonpo, Boryeong and Hadong thermal power plant. The design head to discharge cooling water by gravity and the head caused by tidal level in the southwestern coastal area, could be used for the production of electric power. The various alternatives were studied and technical feasibility and economical efficiency were clearly proved.

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Feasibility Study on Thermal Power Plant Condenser Heat Recovery for District Heating and Fuel Line Preheating (발전소 복수기 배열회수의 지역난방 및 연료라인 예열용 활용타당성 검토)

  • Jung, Hoon;Hwang, Gwang-Won
    • New & Renewable Energy
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    • v.5 no.3
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    • pp.40-48
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    • 2009
  • Recovered heat has been considered as a renewable energy in Europe since 2008 because its great effect on energy saving and carbon decreasing in plant process. Energy saving and decreasing green gas are critical issue today, so various technologies to save energy and decrease carbon dioxide in plant process have been applied to many industrial area. In this paper, the feasibility of condenser heat recovery by heat pump in power plant for district heating and fuel line preheating were reviewed by verifying energy (heat) balance and mass balance of power plant model. Some ways to compose proper system to recover heat of condenser are suggested and their possibilities are also reviewed. Limitations on heat recovery in power plant are also reviewed. The results are verified by calculating input/output energy based on actual performance test data of Taean Thermal Power Plant in Korea. There is noticeable improvement of plant performance in some cases which demand low temperature (<100 C) heat like distrcit heating, fuel line heating, and so forth.

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Review of Virtual Power Plant Applications for Power System Management and Vehicle-to-Grid Market Development (전력시스템 관리 및 Vehicle to Grid 전력시장 개발을 위한 가상발전소의 활용방안)

  • Jin, Tae-Hwan;Park, Herie;Chung, Mo;Shin, Ki-Yeol;Foley, Aoife;Cipcigan, Liana
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.65 no.12
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    • pp.2251-2261
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    • 2016
  • The use of renewable energy sources and energy storage systems is increasing due to new policies in the energy industries. However, the increase in distributed generation hinders the reliability of power systems. In order to stabilize power systems, a virtual power plant has been proposed as a novel power grid management system. The virtual power plant plays includes different distributed energy resources and energy storage systems. We define a core virtual power plant technology related to demand response and ancillary service for the cases of Korea, America, and Europe. We also suggest applications of the proposed virtual power plant to the vehicle-to-grid market for restructuring national power industries in Korea.

Recent Trend to the Forging Technology of Power Plant Components and Status of Forging Company (발전용 소재 단조기술 및 국내 단조업계 동향)

  • Kim, J.T.;Chang, H.S.;Kim, D.K.;Kim, Y.D.;Kim, D.Y.
    • Proceedings of the Korean Society for Technology of Plasticity Conference
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    • 2007.05a
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    • pp.38-41
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    • 2007
  • The increase of $CO_2$ emission by increasing of fossil fuel usage has been understood a major cause of global warming. The supply of electric energy is heavily dependent on the massive thermal power and nuclear power plant before developing the renewable energy to supply the electric energy stably at a low price. The large and sound forged components of pressure vessel, turbine and generator are widely used in power plant such as wind power, hydroelectric power generation, nuclear power and thermal power plant. This paper is discussed the trend of manufacturing technology for pressure vessel and turbine to satisfy the required condition of utility company. It is also introduced a strategy of forging industry to cope with carbon tax.

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Analysis of Energy Concentration Characteristics of Heliostat used in 200kW Tower Type Solar Thermal Power Plant (200kW 탑형 태양열발전시스템에서 사용되는 Heliostat의 집열특성 분석)

  • Park, Young-Chil
    • Journal of the Korean Solar Energy Society
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    • v.31 no.3
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    • pp.80-88
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    • 2011
  • Heliostat in the tower type solar thermal power plant is a sun tracking mirror system to reflect the solar energy to the receiver and the optical performance of it affects to the efficiency of whole power plant most significantly. Thus a solid understanding of heliostat's energy concentration characteristics is the most important step in designing of the heliostat field and the whole power plant. The work presented here is the analysis of energy concentration characteristics of heliostat used in 200kW solar thermal power plant, where the receiver located at 43m high in tower has $2{\times}2$m rectangular shape. The heliostat reflective surface is formed by 4 of $1{\times}1$m flat plate mirror facet and the mirror facet is mounted on the spherical frame. The direct normal incident radiation models in vernal equinox, summer solstice, autumnal equinox and winter solstice are first derived from the actually measured data. Then the intercept ratio, heat flux distribution and total energy collected at the receiver for the heliostats located in the various places of the heliostat field are investigated. Finally the effect of mirror facet installation error on the optical performance of the heliostat is analyzed.

Introduction of Off-Gas Power Plant and Localization Development of Auxiliary Equipment (부생복합발전 소개와 주요설비 국산화를 위한 연구)

  • Ko, Minseok;Kim, Dohyung;Lee, Dongsu;Lee, Seong-geun
    • 한국연소학회:학술대회논문집
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    • 2013.06a
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    • pp.127-128
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    • 2013
  • Off-gas power plant is a renewable energy power plant which generate electrical energy using the low calorie FOG and BFG as main fuel. This combined cycle power plant is comprised of gas turbines, gas compressors, steam turbines, generators, and auxiliary equipment such as gas mixer, mixing tank, and gas cooler. In this paper, a off-gas power plant and development of its several equipment using CFD are introduced.

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Development of Flux Mapping Technique for the Solar Power Tower Plant (타워형 태양열발전을 위한 열유속 분포 측정기술 개발)

  • Chai, Kwan-Kyo;Lee, Hyun-Jin;Kim, Jong-Kyu;Yoon, Hwan-Ki;Lee, Sang-Nam;Kang, Yong-Heack;Seo, Tae-Beom
    • 한국태양에너지학회:학술대회논문집
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    • 2012.03a
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    • pp.274-279
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    • 2012
  • Daegu Solar Power Tower Plant of 200 kW thermal capacity was developed for the first time in Korea, 2011. Measurement of the heat flux distribution is essential to evaluate the solar energy concentrated by reflectors and to design a suitable receiver. The flux mapping technique, which uses a radiometer and a diffuse plate, is common for measurement of the heat flux distribution. Because the solar power tower plant has a wide concentration area, the flux mapping technique using a fixed diffuse plate is difficult to apply. Therefore, the flux distribution in the solar power tower plant should be measured by the flux mapping technique using a small moving bar. In this study, we measured flux distributions with the moving-bar system developed at the KIER solar furnace and evaluated its applicability for the solar power tower plant.

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Effect Analysis on Self-supporting Energy of Newtown Sewage Treatment Facility for Low-carbon Green City (저탄소 녹색도시 조성을 위한 신도시 하수처리시설의 에너지 자립 효과 분석)

  • Ahn, Soo-Jeung;Hyun, Kyoung-Hak;Kim, Jong-Yeob;Choung, Youn-Kyoo
    • Journal of Korean Society of Water and Wastewater
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    • v.24 no.6
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    • pp.683-690
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    • 2010
  • Renewable and unutilized energy (biogas power generation, wind power, solar, small hydro-power, sewage heat source, etc.) seems to be suitable to install for the sewage treatment facilities. There are 357 sewage treatment plants in 2007. 17 plants among these have been operating for self-supporting energy by using solar power, small hydro-power and biogas in 2008. Newly built sewage treatment plant of 96,000 $m^3$/day for a newtown is expected to get up to energy consumption of 10 GWh/yr. If solar energy, small hydro-power and biogas-equipments were applied to the new treatment plant, self-supporting energy of the new sewage treatment plant will get up to 56.1%. As a results, about 2,379ton $CO_2$/yr $CO_2$ emission reduction can be expected by using renewable energy. These efforts for self-supporting energy will lead sewage treatment plant to new energy recycle center.