• Title/Summary/Keyword: 복합화력발전소

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Analysis of the Performance Test Results of a Heat Pump for Closed Cooling Water Heat Recovery on a Combined Thermal Power Plant (복합화력의 냉각수 배열회수를 위한 히트펌프의 성능평가 사례 분석)

  • Lee, Sung-Ho
    • Korean Journal of Air-Conditioning and Refrigeration Engineering
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    • v.26 no.11
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    • pp.541-546
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    • 2014
  • The present study was conducted to determine whether ESCO Business is success or not. ESCO Business recovers the investment costs by the energy savings resulting from complementing existing energy facilities. The guaranteed parameters are Quantity of Heat Recovery, and Generator output drop. The results of the Performance Test show that the Quantity of Heat Recovery increased by 11.52 Gcal/h, and Generator output decreased by 0.234 MW, which satisfied the guarantee value.

The Development of Training System for Power Plant Using Virtual Reality (가상현실을 이용한 발전소 운전원 훈련용 교육훈련 시스템 개발)

  • Park, Shin-Yeol;Lee, Myeong-Soo;Hong, Jin-Hyuk
    • Proceedings of the KIEE Conference
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    • 2002.07d
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    • pp.2791-2793
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    • 2002
  • 전력연구원에서는 발전소와 같이 국민경제에 지대한 영향을 미치는 대형 복합 플랜트에 대한 운영자교육을 효과적 할 수 있는 훈련 시스템을 개발하려는 노력을 1998년부터 계속해 오고 있다. 그 과정으로 하동 화력발전소에 발전소 운전원 훈련용 시뮬레이터의 보조 설비로서 가상현실시스템을 가장 먼저 적용하였으며, 또한 고리 원자력발전소에도 가상현실을 이용한 교육훈련 시스템을 개발하여 설치하였다. 본 논문에서는 이러한 축적된 기술을 바탕으로 울진 표준형 원전 시뮬레이터의 운전원 훈련용으로 개발한, 가상현실을 이용한 컴퓨터 지원 교육훈련 시스템을 소개하고자 한다.

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A Study on the Improvement of Optimal Load Range for Sliding Pressure Operation of coal-fired Power Plant (석탄화력 발전소 최적 변압운전 부하 범위 개선에 대한 연구)

  • Lee, Sang-Hun;Wang, Min-Seok;Wee, Sang-Bong;Son, Yung-Deug
    • Journal of IKEEE
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    • v.23 no.2
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    • pp.675-680
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    • 2019
  • The coal-fired power plant is operated by a combined operation method, which is operated by sliding pressure operation under low load and by fixed pressure operation under high load for improved efficiency. The combined operation is divided into two and three valve open modes. Each plant is operated by selecting the turbine control valve mode in accordance with the manufacturer's recommendation, but is not really operating at the optimal sliding pressure operation according to load range, also Load range of each plant is configured differently. The internal efficiency of the high-pressure turbines is reduced due to loss of the turbine valves and the plant efficiency is reduced. To solve these problems, In this paper, the optimum load range is selected through the analysis method of thermal performance by each load in order to improve the optimum variable pressure operation load range by turbine control valve mode.

Thermodynamic analysis and economical optimization on various configuration of Gas Turbine Combined Cycle Power Plants (다양한 구성의 가스터빈 복합화력발전소에 대한 열역학적 해석과 경제적 최적화 연구)

  • Kim, Seungjin;Choi, Sangmin
    • 한국연소학회:학술대회논문집
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    • 2012.11a
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    • pp.225-228
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    • 2012
  • Thermodynamic and economic analysis on various type of gas turbine combined cycle power plants was presented to build up the criteria for optimization of power plants. The efficiency considered about energy level difference between electricity and heat was introduced. The efficiency on power and heat generation of power plants whose have different purpose was estimated and power generation costs on various type of combined heat and power plants : fired/unfired, condensing/non-condensing mode, single/double pressure HRSG.

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Analysis of Damage Impact Range according to the NG/NH3 Mixing Ratio when applying Ammonia as Fuel for a Combined Cycle Power Plant using an ALOHA Program (ALOHA 프로그램을 활용한 복합화력발전소 내 암모니아 연료 적용 시 NG/NH3 혼소율에 따른 피해영향범위 분석)

  • Yoo Jeong Choi;Hee Kyung Park;Min Chul Lee
    • Journal of the Korean Institute of Gas
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    • v.28 no.1
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    • pp.73-84
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    • 2024
  • In this study, a quantitative risk impact assessment is performed using an ALOHA program to identify the risks when applying ammonia as fuel for combined cycle power plants as one of the solutions of climate change. The worst and the alternative accident scenarios are established for the Sejong combined cycle power plant and the effective ranges are calculated in terms of flammability, thermal radiation, overpressure and toxicity. The analysis results show that the toxic risk is the most critical and the effective distance is highly proportional to the mixing ratio of natural gas and ammonia by showing the Pearson's correlation coefficient over 98% as 0.991, 0.987 and 0.989 for the Level Of Concern(LOC)-1, LOC-2 and LOC-3, respectively. In addition, the coefficients of linearity for LOC-1, LOC-2 and LOC-3 are calculated to 133, 70 and 29, respectively so it can be confirmed that the effective distance increases as the criterion decreases.

A Study on the Demonstration of Yellow Plume Elimination System from Combined Cycle Power Plant Using Liquid Injection System (액상 직분사 시스템을 이용한 복합화력 황연제거 실증 연구)

  • Lee, Seung-Jae;Kim, Younghee
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.21 no.10
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    • pp.317-324
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    • 2020
  • Combined cycle power plants (CCPP) that use natural gas as fuel are easier to start and stop, and have lower pollutant emissions, so their share of domestic power generation facilities is steadily increasing. However, CCPP have a high concentration of nitrogen dioxide (NO2) emission in the initial start-up and low-load operation region, which causes yellow plume and civil complaints. As a control technology, the yellow plume reduction system was developed and operated from the mid-2000s. However, this technology was unable to control the phenomenon due to insufficient preheating of the vaporization system for 10 to 20 minutes of the initial start-up. In this study, CFD analysis and demonstration tests were performed to derive a control technology by injecting a reducing agent directly into the gas turbine exhaust duct. CFD analysis was performed by classifying into 5 cases according to the exhaust gas condition. The RMS values of all cases were less than 15%, showing a good mixing. Based on this, the installation and testing of the demonstration facilities facilitated complete control of the yellow plume phenomenon in the initial start-up.

pH Control of Feed Water for HRSG with Additional Injection of NH3 (암모니아 추가 주입에 의한 배열회수보일러 급수의 수소이온농도 조절)

  • Mok, Yong-kang;Moon, Seung-Jae;Lee, Jae-Heon
    • Plant Journal
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    • v.11 no.2
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    • pp.32-38
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    • 2015
  • This study was conducted on combined cycle power plant consisting of HRSG with integral deaerator type to avoid tube failures of low pressure evaporator tubes. Based on the observation of pH variation at the discharge of boiler feed water pump by continuous pH measurement for a period of time, it was identified that pH of feed water is getting reduced as ammonia is distributed into vapor and liquid depending on the distribution ratio of ammonia in the LP drum after the deaerator. To solve this problem, the counterplan was prepared by reexamination of ammonia injection point and quantity. In conclusion, it was accomplished that 9.2~9.6 is the optimized pH range for boiler feed water by arranging additional piping for ammonia to inject directly to LP drum.

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Analysis of the Mediated Effects for the Organization Factors in a Combined-Cycle Power Plant (복합화력발전소 경영진의 안전관심이 직원의 안전참여에 미치는 영향관계에서 조직요인의 매개효과 분석)

  • Choi, JaeWoo;Um, SungIn;Hong, InGi
    • Journal of the Korean Institute of Gas
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    • v.20 no.3
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    • pp.22-29
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    • 2016
  • Organization characteristics and safety culture contains a wide variety of factors. It should be accessed in a variety of ways in order to improve such a safety culture. Thru by analyzing the safety culture factor of combined-cycle-power plants, it was found to be a positive role in the improvement and enhancement for the improving of safety training, communication and training participation level by structural equation modeling analysis as the management's interest is increased. As the safety training is emphasized, it would be help to improve work participation.

Environmental Noise Evaluation of the Boundary Areas for 1200MW Combined Cycle Power Plant (1200MW 복합화력 발전소가 부지경계에 미치는 환경소음 예측)

  • 이현;김연환;김희수;배용채;김성휘
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • 2001.05a
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    • pp.1056-1061
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    • 2001
  • This paper describes the evaluation of noise influence of residental and boundary areas from power plant noise sources of 1200MW combined cycle power plant. Noise assessments are carried out by based on the ISO 3744, ISO 9613-1 and ISO 9613-2 to predict the noise distribution to satisfy the recommended noise level at specific locations and to calculate properly the octave noise power of main noise sources such as power transformers. air-intakes, stacks.

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