• Title/Summary/Keyword: Diesel Power Plant

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Vibration Control of Engine Body for Two Stroke Low Speed Diesel Engine using Dynamic Vibration Absorber (동흡진기에 의한 저속 2행정 디젤엔진의 본체진동 제어)

  • 이돈출;유정대;김정렬
    • Journal of Advanced Marine Engineering and Technology
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    • v.26 no.6
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    • pp.631-637
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    • 2002
  • Two stroke low speed diesel engines are used as a power supplier not only for marine vessel but also diesel power plant with a benefit of its higher mobility and durability than the other thermal engines. However, there are some disadvantages such as the bigger vibrating excitation forces generated by high combustion pressure in cylinders which various kinds of vibrations are caused. In this paper, it is theoretically studied to control engine body vibration using dynamic vibration absorber. As an actual case, dynamic absorbers are designed for controlling X-mode vibration of 9K80MC-S engine on the diesel power plant and its performance is identified by the vibration test both in shop and site

A Study on the Development of EDG Engine Condition Diagnosis Program in Power Plant (발전용 비상디젤발전기 엔진 상태진단 프로그램 개발 연구)

  • Lee, Sang-Guk;Kim, Dae-Woong
    • Journal of Power System Engineering
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    • v.19 no.5
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    • pp.67-72
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    • 2015
  • The reliable operation of onsite emergency diesel generator(EDG) should be ensured by a conditioning monitoring system designed to maintain, monitor and forecast the reliability level of diesel generator. The purpose of this paper is to develop condition diagnosis algorithm(logic) and analysis program of engine for the accurate diagnosis in actual condition of emergency diesel generator engine. As a result of this study, we confirmed that developed engine condition diagnosis algorithm and analysis program could be efficiently applied for actual EDG engine in nuclear power plant.

Dynamic Analysis of Diesel Generators on Starting Large Induction Motors (대용량유도전동기 기동시의 비상용 디젤발전기 동특성 해석)

  • Han, Poong;Cho, Sung-Don
    • Proceedings of the KIEE Conference
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    • 1987.11a
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    • pp.139-142
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    • 1987
  • It is important to evaluate the voltage characteristics of diesel generator as an emergency power supply in nuclear power plant. On loss of offsite power sources, emergency safeguard loads required to safely shutdown the reactor should be supplied by diesel generator. This paper presents the dynamic stability program to evaluate diesel generator performance as an emergency power system. The results Indicate the diesel generator ability to start the motors successfully seems to life in its impedances and inertias.

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Analysis of Economical efficiency for renewable energy in Steam Power Plant (신재생에너지 적용에 따른 화력발전 경제성분석)

  • Choi, Kyoung-Sik
    • Journal of Environmental Impact Assessment
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    • v.23 no.1
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    • pp.11-17
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    • 2014
  • Since the Renewable Portfolio Standard (RPS) would be started in 2012, the use of renewable energy should be 11% of total energy use including bio-fuel in 2030. The economic efficiency for renewable energy in B power plant was considered with the bio-diesel, wind power and solar power. The Net Present Value (NPV) and Benefit/Cost Ratio(BC) were used for the economic efficiency with the cost and benefit analysis. In case of bio-diesel, the cost resulted from the fuel conversion and the benefit would be created with trade and environmental improvement. With regard to wind power and solar power, the construction cost would be required and benefit factors would be same as the bio-diesel. The wind power was the best of economic efficiency of renewable energy as the results of NPV and BC ratio. Whereas, the market of wind power was very popular and the techniques of wind power has been developing rapidly.

Physico-Chemical Characterization of Black Carbon Emitted from Coal-fired Power Plant, Charcoal Kiln and Diesel Vehicle (석탄화력 발전소, 숯가마, 디젤차량에서 배출되는 Black Carbon의 물리화학적 특성화 연구)

  • Saixiyaletu, Saixiyaletu;Kim, Jin Young;Shim, Shang-Gyoo;Jin, Hyoun Cher;Kim, Jong Soo
    • Journal of Korean Society for Atmospheric Environment
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    • v.29 no.2
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    • pp.152-162
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    • 2013
  • The physico-chemical characteristics and nanostructure of the aerosol samples from a coal-fired power plant, a charcoal kiln and diesel vehicles were investigated with focusing on black carbon (BC). Aerosols from the coal-fired power plant were mostly comprised of mineral ash spheres which are heterogeneously mixed. The main components of the aerosols from coal-fired power plant were calcium compounds, iron oxide, alumino-silicate without BC. The typical combustion-generated BC which shows the shape of bunch of grapes with 20~50 nm particles which were detected in aerosol particles from diesel vehicles. The nanostructure of each BC particle shows the shape of concentric circles which is comprised of closely-packed graphene layers. Aerosols from charcoal kiln were likely condensed organic carbon generated from the low-temperature combustion process.

Intake Noise Control of Diesel Power Plant using Combined Silencer (조합형 소음기를 이용한 육상발전용 디젤 엔진의 흡기 소음 제어)

  • Song, Keun-Bok;Joo, Won-Ho;Kim, Dong-Hae
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • 2012.04a
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    • pp.861-866
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    • 2012
  • Turbo-charger noise radiated from air intake part is one of the most important noise sources in diesel power plant. In this paper, intake noise control of the diesel power plant was studied using parallel baffle type silencer and concentric hole-cavity resonator simultaneously. Firstly, acoustical characteristics and attenuation performance for parallel baffle type silencer were investigated through theoretical approach and experimental method. Based on the results, optimal design of the parallel baffle silencer was suggested. Secondly, for reducing the low frequency noise contained in the intake noise, the concentric hole-type resonator was developed and the acoustic performance was verified from the test. By combining two types of silencers, it is expected that the overall insertion loss is about 50 dB. So, the combined silencer is very helpful in reducing the intake noise of diesel power plant.

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Reliability Analysis of Diesel Generators of Wolsong Unit 1

  • Park, S. Y.;Kim, S. H.;Kim, K. Y.;Kim, T. W.;Y. S. Cho
    • Proceedings of the Korean Nuclear Society Conference
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    • 1997.05a
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    • pp.502-507
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    • 1997
  • As a maintenance optimization project to improve the safety of Wolsong NPP (Nuclear Power Plant), reliability of diesel generators are estimated based on the operating experience, and improvement options are suggested. A reliability measure is suggested for the estimation of reliability for standby safety systems to reflect availability. It is assessed that the reliability of diesel generators can be much improved if the suggested improvement options are implemented.

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A Field Test of Diesel Generator Excitation Control System Using Real Time Simulator (실시간 시뮬레이터를 이용한 디젤발전기 여자시스템 현장시험)

  • Lee, Joo-Hyun;Rhew, Ho-Sun;Jeong, Tae-Won
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.59 no.7
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    • pp.1314-1319
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    • 2010
  • The excitation control system of an emergency diesel generator is classified as a kind of safety-related system. Compared with other control systems in a power plant, this system is required to be more reliable and have better performance. KEPCO Research Institute successfully developed the excitation control system for a diesel generator. This paper presents its field test results by using a real time simulator on a nuclear power plant.

Investigation on Replacement Criteria for Aged Diesel Driven Power Generation Facility by Monte Carlo Simulation (몬테카를로 시뮬레이션을 통한 노후 디젤발전설비 교체기준 고찰)

  • Park, Myungsoo;Song, Gee Wook;Seo, Sang Il;Won, Dong Ju
    • Transactions of the KSME C: Technology and Education
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    • v.2 no.2
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    • pp.89-97
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    • 2014
  • The diesel driven power generation facility provides most of electricity of island region where is isolated from the main land power supply system. It is possible to extend the life of diesel driven power generation facility by periodic maintenance. However, the long-term use of diesel driven power generation facility increases the operating cost due to aging hardware and reduced plant efficiency. In other words, on-time replacement of aging diesel driven power generation facility reduces plant operation cost. The purpose of this study presents major indicators to represent the characteristics of the diesel generator and conducts sensitivity analysis using Monte Carlo analysis. In addition, status core which indicates quantitatively the state of the diesel driven power generation facility is defined and prepare the replacement criteria based on the state score.

A Study on the Analysis of Failures Related to Emergency Diesel Generators in Overseas Nuclear Power Plants (원전용 비상디젤발전기 국외 손상사례 분석에 관한 연구)

  • Chang, Jung-Hwan;Kim, Jin-Sung;Chung, Hae-Dong;Cho, Kwon-Hae
    • Transactions of the Korean Society of Pressure Vessels and Piping
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    • v.5 no.1
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    • pp.32-37
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    • 2009
  • The emergency diesel generator (EDG) in a nuclear power plant (NPP) shall start within 10 secondss and supply electrical power to engineered safety features within one minute and less if a loss of offsite power (LOOP), A design-basis event, or their combination occur. Each NPP has an EDG set consisting of two diesel generators for redundancy. In addition to the EDG set, an alternate Alternating Current Diesel Generator (AAC DG) is installed and shared by several units to cope with a station black out (SBO), i.e., loss of the offsite power concurrent with reactor trip and unavailability of the EDG set. The objective of this study is to analyze the failure data of emergency diesel generators reported in overseas nuclear power plants.

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