• Title/Summary/Keyword: power plant

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The Development of Boiler Fuel Control Algorithm and Distributed Control System for Coal-Fired Power Plant (석탄화력발전소 보일러 연료제어 알고리즘과 분산제어시스템의 개발)

  • Lim, Gun-Pyo;Lee, Heung-Ho
    • The Transactions of the Korean Institute of Electrical Engineers P
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    • v.62 no.1
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    • pp.36-44
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    • 2013
  • This paper is written for the development and application of boiler fuel control algorithm and distributed control system of coal-fired power plant by the steps of design, coding, simulation test, site installation and site commissioning test. Fuel control algorithm has the upper algorithm and it is boiler master control algorithm that controls the fuel, feed water, air by generation output demand. Generation output demand by power load influences fuel control. Because fuel can not be supplied fast to the furnace of boiler, fuel control algorithm was designed adequately to control the steam temperature and to prevent the explosion of boiler. This control algorithms were coded to the control programs of distributed control systems which were developed domestically for the first time. Simulator for coal-fired power plant was used in the test step. After all of distributed control systems were connected to the simulator, the tests of the actual power plant were performed successfully. The reliability was obtained enough to be installed at the actual power plant and all of distributed control systems had been installed at power plant and all signals were connected mutually. Tests for reliability and safety of plant operation were completed successfully and power plant is being operated commercially. It is expected that the project result will contribute to the safe operation of domestic new and retrofit power plants, the self-reliance of coal-fired power plant control technique and overseas business for power plant.

The Development of Boiler Furnace Pressure Control Algorithm and Distributed Control System for Coal-Fired Power Plant (석탄화력발전소 보일러 노내압력 제어알고리즘과 분산제어시스템의 개발)

  • Lim, Gun-Pyo;Hur, Kwang-Bum;Park, Doo-Yong;Lee, Heung-Ho
    • The Transactions of the Korean Institute of Electrical Engineers P
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    • v.62 no.3
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    • pp.117-126
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    • 2013
  • This paper is written for the development and application of boiler furnace pressure control algorithm and distributed control system of coal-fired power plant by the steps of design, coding, simulation test, site installation and site commissioning test. The control algorithms were designed in the shape of cascade control for two parts of furnace pressure control and induced draft fan pitch blade by standard function blocks. This control algorithms were coded to the control programs of distributed control systems. The simulator for coal-fired power plant was used in the test step and automatic control, sequence control and emergency stop tests were performed successfully like the tests of the actual power plant. The reliability was obtained enough to be installed at the actual power plant and all of distributed control systems had been installed at power plant and all signals were connected mutually. Tests for reliability and safety of plant operation were completed successfully and power plant is being operated commercially. It is expected that the project result will contribute to the safe operation of domestic new and retrofit power plants, the self-reliance of coal-fired power plant control technique and overseas business for power plant.

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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    • 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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Innovative Nuclear Power Plant Building Arrangement in Consideration of Decommissioning

  • Choi, Won-Jun;Roh, Myung-Sub;Kim, Chang-Lak
    • Nuclear Engineering and Technology
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    • v.49 no.3
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    • pp.525-533
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    • 2017
  • A new concept termed the Innovative Nuclear Power Plant Building Arrangement (INBA) strategy is a new nuclear power plant building arrangement method which encompasses upfront consideration of more efficient decommissioning. Although existing decommissioning strategies such as immediate dismantling and differed dismantling has the advantage of either early site restoration or radioactive decommissioning waste reduction, the INBA strategy has the advantages of both strategies. In this research paper, the concept and the implementation method of the INBA strategy will be described. Two primary benefits will be further described: (1) early site restoration; and (2) radioactive waste reduction. Several other potential benefits will also be identified. For the estimation of economic benefit, the INBA strategy, with two primary benefits, will be compared with the immediate dismantling strategy. The effect of a short life cycle nuclear power plant in combination with the INBA strategy will be reviewed. Finally, some of the major impediments to the realization of this strategy will be discussed.

A Study on Environmental and Economic Cost Analysis of Coal Thermal Power Plant Comparing to LNG Combined Power Plant (석탄화력발전대비 LNG복합화력발전 환경성 및 경제성 비용분석에 관한 연구)

  • Kim, Jong-Won
    • Asia-Pacific Journal of Business
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    • v.9 no.4
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    • pp.67-84
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    • 2018
  • This study is about comparing coal thermal plant to LNG combined power plant in respect of environmental and economic cost analysis. In addition sensitive analysis of power cost and discount rate is conducted to compare the result of change in endogenous and exogenous variable. For environmental assessment, when they generate 10,669GWh yearly, coal thermal power plant emits sulfur oxides 959ton, nitrogen oxide 690ton, particulate matter 168ton and LNG combined power plant emits only nitrogen oxide 886ton respectively every year. Regarding economic cost analysis on both power plants during persisting period 30 years, coal thermal power plant is more cost effective 4,751 billion won than LNG combined taking in account the initial, operational, energy and environmental cost at 10,669GWh yearly in spite of only LNG combined power plant's energy cost higher than coal thermal. In case of sensitive analysis of power cost and discount rate, as 1% rise or drop in power cost, the total cost of coal thermal power plant increases or decreases 81 billion won and LNG combined 157 billion won up or down respectively. When discount rate 1% higher, the cost of coal thermal and LNG combined power plant decrease 498 billion won and 539 billion won for each. When discount rate 1% lower, the cost of both power plant increase 539 billion won and 837 billion won. With comparing each result of change in power cost and discount rate, as discount rate is weigher than power cost, which means most influential variable of power plan is discount rate one of exogenous variables not endogenous.

The Development of Boiler Combustion Air Control Algorithm for Coal-Fired Power Plant (석탄화력발전소 보일러 연소용 공기 제어알고리즘의 개발)

  • Lim, Gun-Pyo;Lee, Heung-Ho
    • The Transactions of the Korean Institute of Electrical Engineers P
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    • v.61 no.4
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    • pp.153-160
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    • 2012
  • This paper is written for the development of boiler combustion air control algorithm of coal-fired power plant by the steps of design, coding and test. The control algorithms were designed in the shape of cascade control for two parts of air master, forced draft fan pitch blade by standard function blocks. This control algorithms were coded to the control programs of distributed control systems under development. The simulator for coal-fired power plant was used in the test step and automatic control, sequence control and emergency stop tests were performed successfully like the tests of the actual power plant. The reliability will be obtained enough to apply to actual site if the total test has been completed in the state that all algorithms were linked mutually. It is expected that the project result will contribute to the safe operation of domestic power plant and the self-reliance of coal-fired power plant control technique.

A Study on the Cost Hierarchical System of Nuclaer Power Plant Construction Project for Introcusting Earned Vaule Management System (성과관리시스템(EVMS) 도입을 위한 원전 건설사업비 관리체계 세분화 방안에 관한 연구)

  • Lee, Sang-Hyun;Kim, Woo-Joong
    • Proceedings of the Korean Institute of Building Construction Conference
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    • pp.230-231
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    • 2019
  • The nuclear power plant construction project is large-scale, has various stakeholders and computer system, and is produced and managed a large amount of information. The domestic nuclear power plant construction project has accumulated data based on many years of experience in the system. It has the competitiveness to suggeest alternatives that meet the requirement of the client in the overseas nuclear power plant project. Earned value management, which integrates schedule and cost, is possible to risk management. It was developed the earned value management system considering the the actual data properties and types of the preceding nuclear power plant construction projects. It will be able to increase the nuclaer power plant export competieiveness. Therefore, it was palned to carry out future stuies so that it be able to complement the measure to integrate cost and schedule in consideration of actual data(quantity of activity, etc.).

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Combustion Technology for Low Rank Coal and Coal-Biomass Co-firing Power Plant (저급탄 석탄화력 및 석탄-바이오매스 혼소 발전을 위한 연소 기술)

  • Lee, Donghun;Ko, Daeho;Lee, Sunkeun;Baeg, Guyeol
    • 한국연소학회:학술대회논문집
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    • pp.129-132
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    • 2013
  • The low rank coal combustion and biomass-coal co-firing characteristics were reviewed on this study for the power plant construction. The importance of using low rank coal(LRC) for power plant is increasing gradually due to power generation economy and biomass co-firing is also concentrated as power source because it has carbon neutral characteristics to reduce green-house effect. The combustion characteristics of low rank coal and biomass for a 310MW coal firing power plant and a 100MW biomass and coal co-firing power plant were studied to apply into actual power plant design and optimized the furnace and burner design.

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An analysis about failures of the power converter in power plant (발전플랜트의 전력변환기 고장사례 분석)

  • Han, Seok-Woo
    • Proceedings of the KIPE Conference
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    • pp.554-555
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    • 2012
  • The failures in the power plant can lead to a dangerous situation according to the demand and supply of the electric power. The failure times of the domestic plant happens very often, and it has been reported as a significant loss by the power sales. Therefore, the power plant is demanded to maintain very well in order to produce a high quality of power. The rate of failures by the electricity facility is filled with 40[%] among the trouble in the failures of the power plant. The failures of power plant can cause serious accidents, magnificent losses, and chaos in our society. So, we require a significant plan to reduce such a serious problem. In this paper, I analysis the failure case of power converter in power plant, and I offer the better solution to be able to prevent the failures from power plant.

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FMEA for Facility Reliability Analysis of A Hydro-power Plant (수력발전소 설비 신뢰성 분석을 위한 FMEA)

  • Kwon, Chang-Seob;Jeon, Tae-Bo
    • Journal of Industrial Technology
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    • v.26 no.B
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    • pp.135-144
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    • 2006
  • The significance of hydro-power plant is increasing in its public roles such as flood control and water supply as well as electric power production. Even if high level of reliability in facility operation is required, no specific reliability research has been made. This specifically stems from the lack of technology and research investments. The eventual goal of this study is to secure a methodology for reliability analysis of hydro-power plant so that an appropriate decision for operation and investment can be made. Specific effort was put to develop a reliability model for water supply system within hydro-power plant. For this study, we briefly examined the overview of the hydro-power plant including the electric power generation facility system. We then discussed the facility reliability analysis methodology for hydro-power plant. Based on rigorous examination of the water supply system and components roles, we drew major failure modes for each component and examined their effects.

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