Journal of the Korean Society of Marine Environment & Safety (해양환경안전학회지)

The Korean Society of Marine Environment and safety (해양환경안전학회)
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A Study on the Performance Analysis of the High Pressure - Intermediate Pressure Steam Turbine Model for Co-generation Plants using Commercial Programs

상용 프로그램을 이용한 열병합 발전용 고압(HP)-중압(IP) 증기터빈 모델의 성능해석에 대한 연구

  • Jong Pil Won (Division of Marine Engineering, Mokpo National Maritime University) ;
  • Seung Tae Oh (Engineering Center. KEPCO KPS Global Institute of Technology) ;
  • Jungmo Oh (Division of Marine Engineering, Mokpo National Maritime University)
  • 원종필 (목포해양대학교 기관시스템공학과) ;
  • 오승태 (한전KPS(주) 엔지니어링센터) ;
  • 오정모 (목포해양대학교 기관시스템공학부)
  • Received : 2023.05.23
  • Accepted : 2023.06.27
  • Published : 2023.06.30
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Abstract

The first technological advance to improve the output and efficiency of the latest steam turbines operating in co-generation plants in Korea can be said to be progress in the field of materials that can use high-temperature, high-pressures steam. As a result of design efforts to improve the internal efficiency of steam turbines along with the development of materials, only a few manufacturers of steam turbine have produced high efficiency steam turbines. The internal efficiency of a steam turbine on the steam path operating for a long period of time is gradually lost owing to the limit of mechanical life, and efficiency and output decrease. Therefore, this study aims to develop a model that can analyze the steam flow path performance of HP (High Pressure) and IP (Intermediate Pressure) steam turbine for a co-generation plant using a commercial program and propose a performance calculation method. Owing to the complex performance calculation method of steam turbines, major variables are presented to serve as practically useful references for steam turbine practitioners. In addition, the thermal dynamic analysis(such as heat balance diagram calculation) and the the thermal dynamic calculation required for steam turbine performance calculation and the suitability of the steam turbine performance calculation results were compared with the performance test results.

우리나라 열병합 발전소에서 운영되고 있는 최신 증기터빈의 출력과 효율 향상을 위한 첫 번째 기술적인 진보는 고온, 고압의 증기를 사용할 수 있는 소재 개발의 진척이라고 할 수 있다. 소재의 발전과 더불어 증기터빈의 내부효율 향상을 위한 설계적 노력의 결실로 높은 효율의 증기터빈이 제작되었다. 오랜 기간 운전 중인 증기터빈의 내부효율은 기계적 수명의 한계로 점차 손실이 발생하고 효율과 출력이 떨어지게 된다. 이러한 이유로 본 연구에서는 상용프로그램을 이용하여 열병합 발전소용 고압(HP)-중압(IP) 증기터빈의 증기유로 성능해석을 수행할 수 있는 모델을 개발하고 성능계산 방법을 제시하고자 한다. 증기터빈의 복잡한 성능계산방식으로 인해 증기터빈 실무자들에게 실질적으로 유용한 참고문헌이 될 수 있도록 주요 변수들을 제시하였다. 또한 증기터빈 성능계산에 필요한 열정산도 분석과 증기터빈 성능계산 결과의 적합성을 성능시험 결과와 비교 확인하였다.

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References

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