• 제목/요약/키워드: Coal-Fired Power Plant

검색결과 264건 처리시간 0.024초

RPS제도 도입에 따른 민간 석탄 발전소의 최적 발전량 결정 메커니즘 연구 (A Mechanism of IPP's(Coal Fired) Optimal Power Generation According to Introduction of RPS(Renewable Portfolio Standard))

  • 하선우;이상중
    • 전기학회논문지
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    • 제65권7호
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    • pp.1135-1143
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    • 2016
  • A private company's 1,000 MW coal-fired power plant will be the first coal-fired power plant that was included in the 5th 'Basic Plan on Electricity Demand and Supply' (2010). Now it is facing the task to abide by the RPS(Renewable Portfolio Standard) policy after commercial operation. If they fail to supply the necessary REC (Renewable Energy Certificate) mandated by the RPS policy, they are subject to be fined by the government and forced to modify the cost function to reflect the burden. Eventually the company's coal-fired power plant will be forced to reduce generation to maximize profit because the amount of electricity generated by the power plant and the REC obligation is positively correlated. This paper analyzed the change of cost function of private coal-fired power plant according to the introduction of RPS policy from the viewpoint of private company, and finally proposed the optimal generation to maximize the profit of private coal-fired power plant under the current RPS policy.

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

  • 임건표;이흥호
    • 전기학회논문지P
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    • 제61권4호
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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.

Overview of coal-fired power plant ash situation and cement industry in Vietnam

  • Hong, Ha Thi Vu;Ahn, Ji Whan
    • 에너지공학
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    • 제27권3호
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    • pp.57-62
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    • 2018
  • The development of coal-fired power plants to ensure energy security and electricity consumption is a matter for the Vietnam economy. However, the huge amount of ash discharged is a major environmental challenge. It is estimated that by the end of 2017, the amount of ash in the country is about 40 million tons and annually emitted over 16.4 million tons. While the quantity of coal-fired power plant is rising, the ash content will increase year by year if the ash doesn't treat well. The ash will be increased from 61 million tons in 2018 to 109 million tons in 2020, 248 million tons in 2025 and 422 million tons in 2030. The difficulties of coal-fired power plants are the problem of ash handling, some plants are at risk of closure because there are not enough dump capacity to storage. Therefore, Vietnam is in need of urgent measures to treat a large amount of waste from coal-fired power plants. The specific objectives of this study were as follows: (1) provide an overview of coal ash situation produced by coal-fired power plants in Vietnam; (2) study about regulations related to coal ash treatment; (3) comprehend the literature review of the cement sector status.

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

  • 임건표;이흥호
    • 전기학회논문지P
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    • 제62권1호
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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.

A Study on Repowering of Domestic Aged Coal-fired Power Plant

  • Baek, SeHyun;Kim, YoungJoo;Kim, HyunHee;Park, SangBin;Jang, JiHoon
    • KEPCO Journal on Electric Power and Energy
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    • 제3권1호
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    • pp.35-39
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    • 2017
  • Recently, the public opinion is growing that the main cause of greenhouse gas, fine dust and nitrogen oxide, sulfuric acid emission is coal-fired power plant, and now the decommission or conversion to other clean fuel is being demanded. However, it is a huge national loss to decommission coal-fired power plant with remaining life, and also simple fuel converting to natural gas will lead to drastic rise on power generating cost. Therefore, this study aims to provide the analysis result about the reduction effect of $CO_2$, environment emission, and to influence to power plant performance and facilities when repowering with adding gas turbine is applied to domestic aged coal-fired power plant.

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

  • 임건표;허광범;박두용;이흥호
    • 전기학회논문지P
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    • 제62권3호
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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.

MFCA를 적용한 환경부하 및 발전원가 분석 연구 : 석탄화력발전소 중심으로 (A Study on Environmental Impact and Cost Analysis in Electricity Generation Using MFCA For a Coal-fired Power Plant)

  • 임병선;박승욱
    • 대한안전경영과학회지
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    • 제17권1호
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    • pp.271-279
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    • 2015
  • Global warming has pressured companies to put a greater emphasis on environment management which allows them to reduce environmental impact and costs of their operations. In Korea, the coal-fired power plants take a large account of electricity generation at 31.7% of the total electricity usage in 2014. Thus, environmental impact of coal-fired power plants is significant. This paper illustrated how to compute environmental impact and costs in electricity generation at a coal-fired power plant using MFCA methodology. Compared to the traditional accounting, an advantage of MFCA is to provide information on electricity generation costs and environmental wastes incurring throughout the production process of electricity. Based on MFCA, the coal-fired power plant was able to reduce production cost of electricity by 52.3%, and environmental wastes by 47.7%. As a result, MFCA seemed to be an effective tool in environmental management for power plants.

다양한 탄종 연소에 따른 석탄화력 보일러 연소장애 및 연소현안에 대한 대처방안 연구 (A Study on Combustion Troubles, Issues and Countermeasures in the Coal Fired Power Plant Boilers with Various Coals)

  • 김춘근
    • 한국연소학회:학술대회논문집
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    • 한국연소학회 2006년도 제33회 KOSCO SYMPOSIUM 논문집
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    • pp.282-292
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    • 2006
  • Various kinds of coals are supplied for coal fired power plants as the coal market situations are fluctuated with the high prices of oil and coals over the world. The quality of coal is decreasing as coal consumption increased and some specifications of coals are out of boiler design criteria. It could make combustion troubles such as coal clogging, spontaneous combustion, coal firing in the coal handling equipments, ash slag and clinker issues, etc. This paper covers combustion troubles, issues and countermeasures in the biggest coal fired power plant in Korea.

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석탄발전과 원자력발전에 의한 방사선피폭 비교 연구 (Comparison of Radiation Exposures from Coal-fired and Nuclear Power Plants)

  • Han, Moon-Hee;Kim, Byung-Woo;Yoo, Byung-Sun;Lee, Jeong-Ho
    • Nuclear Engineering and Technology
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    • 제19권2호
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    • pp.99-106
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    • 1987
  • 가상적인 1,000MWe의 석탄화력발전과 원자력 발전소로부터 배출되는 방사성물질에 의한 피폭 영향을 상호 비교 연구하였다. 본 논문에서는 정상가동중에 배출되는 기체상 방사성물질에 국한하였으며 석탄화력발전소에 대한 방사선원은 국내자료가 부족하여 외국자료에 근거했고, 원자력발전소에 대해서는 표준발전소에 대해 계산된 방사선원을 사용하였다. 고리 기상탑의 1년 기상자료를 이용하여 Gaussian모델에 의해 방사성물질의 대기확산을 평가했으며, 개인 피폭선량은 대기확산인자가 최대인 지점의 성인에 대해 계산하였다. 방사선피폭선량은 석탄화력발전소보다 원자력발전소의 경우가 약간 컸으며 석탄화력의 경우는 원자력발전소와 달리 피폭선량의 73.5%가 오염된 엽채류의 섭취에 따른 것이었다.

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화력발전소 폐쇄와 항만인력 고용의 공정한 전환 (Coal-fired power plants closure and just transition of port labour employment)

  • 우수한;김두리
    • 무역학회지
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    • 제45권5호
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    • pp.55-74
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    • 2020
  • This study examines the policy direction and specific countermeasures for addressing possible port labour issues from the perspective of Just Transition which may be raised by closing coal fired power plants in Korea. Current energy transition policy and port labour policy in Korea are reviewed and case studies in the countries which has experienced closure of coal fired power plants are undertaken. Although it varies from country to country, a similar approach was found that the employment problem of coal fired power plant closures and measures based on Just Transition regime to mitigate the negative impacts that occur in the region are the key to successful transition. It is suggested that countermeasures for port labour should be institutionalized for providing stakeholders with legal stability covering labours not only directly employed by the plants but also employed in entities in the whole supply chains.